some $.html( -> $.text(

Thoses that are obvious and easy to fix.

we shoudl have I think a travis test that grep for .html( and return
less than 20 lines :-)

IPython/html/static/notebook/js/celltoolbarpresets/rawcell.js

@@ -1,90 +1,90 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2012  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // CellToolbar Example
 //============================================================================
 
 (function(IPython) {
   "use strict";
 
   var CellToolbar = IPython.CellToolbar;
   var raw_cell_preset = [];
   var utils = IPython.utils;
 
   var select_type = CellToolbar.utils.select_ui_generator([
     ["None", "-"],
     ["LaTeX", "text/latex"],
     ["reST", "text/restructuredtext"],
     ["HTML", "text/html"],
     ["Markdown", "text/markdown"],
     ["Python", "text/x-python"],
     ["Custom", "dialog"],
 
     ],
       // setter
       function(cell, value) {
         if (value === "-") {
           delete cell.metadata.raw_mimetype;
         } else if (value === 'dialog'){
             var dialog = $('<div/>').append(
                 $("<p/>")
-                    .html("Set the MIME type of the raw cell:")
+                    .text("Set the MIME type of the raw cell:")
             ).append(
                 $("<br/>")
             ).append(
                 $('<input/>').attr('type','text').attr('size','25')
                 .val(cell.metadata.raw_mimetype || "-")
             );
             IPython.dialog.modal({
                 title: "Raw Cell MIME Type",
                 body: dialog,
                 buttons : {
                     "Cancel": {},
                     "OK": {
                         class: "btn-primary",
                         click: function () {
                             console.log(cell);
                             cell.metadata.raw_mimetype = $(this).find('input').val();
                             console.log(cell.metadata);
                         }
                     }
                 },
                 open : function (event, ui) {
                     var that = $(this);
                     // Upon ENTER, click the OK button.
                     that.find('input[type="text"]').keydown(function (event, ui) {
                         if (event.which === utils.keycodes.ENTER) {
                             that.find('.btn-primary').first().click();
                             return false;
                         }
                     });
                     that.find('input[type="text"]').focus().select();
                 }
             });
         } else {
           cell.metadata.raw_mimetype = value;
         }
       },
       //getter
       function(cell) {
         return cell.metadata.raw_mimetype || "";
       },
       // name
       "Raw NBConvert Format",
       // cell_types
       ["raw"]
   );
 
   CellToolbar.register_callback('raw_cell.select', select_type);
 
   raw_cell_preset.push('raw_cell.select');
 
   CellToolbar.register_preset('Raw Cell Format', raw_cell_preset);
   console.log('Raw Cell Format toolbar preset loaded.');
 
 }(IPython));

IPython/html/static/notebook/js/mathjaxutils.js

@@ -1,259 +1,259 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2012  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // MathJax utility functions
 //============================================================================
 
 
 IPython.namespace('IPython.mathjaxutils');
 
 IPython.mathjaxutils = (function (IPython) {
     "use strict";
 
     var init = function () {
         if (window.MathJax) {
             // MathJax loaded
             MathJax.Hub.Config({
                 tex2jax: {
                     inlineMath: [ ['$','$'], ["\\(","\\)"] ],
                     displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
                     processEscapes: true,
                     processEnvironments: true
                 },
                 // Center justify equations in code and markdown cells. Elsewhere
                 // we use CSS to left justify single line equations in code cells.
                 displayAlign: 'center',
                 "HTML-CSS": {
                     styles: {'.MathJax_Display': {"margin": 0}},
                     linebreaks: { automatic: true }
                 }
             });
             MathJax.Hub.Configured();
         } else if (window.mathjax_url !== "") {
             // Don't have MathJax, but should. Show dialog.
             var message = $('<div/>')
                 .append(
-                    $("<p/></p>").addClass('dialog').html(
+                    $("<p/></p>").addClass('dialog').text(
                         "Math/LaTeX rendering will be disabled."
                     )
                 ).append(
-                    $("<p></p>").addClass('dialog').html(
+                    $("<p></p>").addClass('dialog').text(
                         "If you have administrative access to the notebook server and" +
                         " a working internet connection, you can install a local copy" +
                         " of MathJax for offline use with the following command on the server" +
                         " at a Python or IPython prompt:"
                     )
                 ).append(
-                    $("<pre></pre>").addClass('dialog').html(
+                    $("<pre></pre>").addClass('dialog').text(
                         ">>> from IPython.external import mathjax; mathjax.install_mathjax()"
                     )
                 ).append(
-                    $("<p></p>").addClass('dialog').html(
+                    $("<p></p>").addClass('dialog').text(
                         "This will try to install MathJax into the IPython source directory."
                     )
                 ).append(
-                    $("<p></p>").addClass('dialog').html(
+                    $("<p></p>").addClass('dialog').text(
                         "If IPython is installed to a location that requires" +
                         " administrative privileges to write, you will need to make this call as" +
                         " an administrator, via 'sudo'."
                     )
                 ).append(
-                    $("<p></p>").addClass('dialog').html(
+                    $("<p></p>").addClass('dialog').text(
                         "When you start the notebook server, you can instruct it to disable MathJax support altogether:"
                     )
                 ).append(
-                    $("<pre></pre>").addClass('dialog').html(
+                    $("<pre></pre>").addClass('dialog').text(
                         "$ ipython notebook --no-mathjax"
                     )
                 ).append(
-                    $("<p></p>").addClass('dialog').html(
+                    $("<p></p>").addClass('dialog').text(
                         "which will prevent this dialog from appearing."
                     )
                 );
             IPython.dialog.modal({
                 title : "Failed to retrieve MathJax from '" + window.mathjax_url + "'",
                 body : message,
                 buttons : {
                     OK : {class: "btn-danger"}
                 }
             });
         }
     };
 
     // Some magic for deferring mathematical expressions to MathJax
     // by hiding them from the Markdown parser.
     // Some of the code here is adapted with permission from Davide Cervone
     // under the terms of the Apache2 license governing the MathJax project.
     // Other minor modifications are also due to StackExchange and are used with
     // permission.
 
     var inline = "$"; // the inline math delimiter
 
     // MATHSPLIT contains the pattern for math delimiters and special symbols
     // needed for searching for math in the text input.
     var MATHSPLIT = /(\$\$?|\\(?:begin|end)\{[a-z]*\*?\}|\\[\\{}$]|[{}]|(?:\n\s*)+|@@\d+@@)/i;
 
     //  The math is in blocks i through j, so
     //    collect it into one block and clear the others.
     //  Replace &, <, and > by named entities.
     //  For IE, put <br> at the ends of comments since IE removes \n.
     //  Clear the current math positions and store the index of the
     //    math, then push the math string onto the storage array.
     //  The preProcess function is called on all blocks if it has been passed in
     var process_math = function (i, j, pre_process, math, blocks) {
         var hub = MathJax.Hub;
         var block = blocks.slice(i, j + 1).join("").replace(/&/g, "&amp;") // use HTML entity for &
         .replace(/</g, "&lt;") // use HTML entity for <
         .replace(/>/g, "&gt;") // use HTML entity for >
         ;
         if (hub.Browser.isMSIE) {
             block = block.replace(/(%[^\n]*)\n/g, "$1<br/>\n");
         }
         while (j > i) {
             blocks[j] = "";
             j--;
         }
         blocks[i] = "@@" + math.length + "@@"; // replace the current block text with a unique tag to find later
         if (pre_process){
             block = pre_process(block);
         }
         math.push(block);
         return blocks;
     };
 
     //  Break up the text into its component parts and search
     //    through them for math delimiters, braces, linebreaks, etc.
     //  Math delimiters must match and braces must balance.
     //  Don't allow math to pass through a double linebreak
     //    (which will be a paragraph).
     //
     var remove_math = function (text) {
         if (!window.MathJax) {
             return [text, null];
         }
 
         var math = []; // stores math strings for later
         var start;
         var end;
         var last;
         var braces;
 
         // Except for extreme edge cases, this should catch precisely those pieces of the markdown
         // source that will later be turned into code spans. While MathJax will not TeXify code spans,
         // we still have to consider them at this point; the following issue has happened several times:
         //
         //     `$foo` and `$bar` are varibales.  -->  <code>$foo ` and `$bar</code> are variables.
 
         var hasCodeSpans = /`/.test(text),
             de_tilde;
         if (hasCodeSpans) {
             text = text.replace(/~/g, "~T").replace(/(^|[^\\])(`+)([^\n]*?[^`\n])\2(?!`)/gm, function (wholematch) {
                 return wholematch.replace(/\$/g, "~D");
             });
             de_tilde = function (text) {
                 return text.replace(/~([TD])/g, function (wholematch, character) {
                                                     return { T: "~", D: "$" }[character];
                                                 });
             };
         } else {
             de_tilde = function (text) { return text; };
         }
 
         var blocks = IPython.utils.regex_split(text.replace(/\r\n?/g, "\n"),MATHSPLIT);
 
         for (var i = 1, m = blocks.length; i < m; i += 2) {
             var block = blocks[i];
             if (block.charAt(0) === "@") {
                 //
                 //  Things that look like our math markers will get
                 //  stored and then retrieved along with the math.
                 //
                 blocks[i] = "@@" + math.length + "@@";
                 math.push(block);
             }
             else if (start) {
                 //
                 //  If we are in math, look for the end delimiter,
                 //    but don't go past double line breaks, and
                 //    and balance braces within the math.
                 //
                 if (block === end) {
                     if (braces) {
                         last = i;
                     }
                     else {
                         blocks = process_math(start, i, de_tilde, math, blocks);
                         start  = null;
                         end    = null;
                         last   = null;
                     }
                 }
                 else if (block.match(/\n.*\n/)) {
                     if (last) {
                         i = last;
                         blocks = process_math(start, i, de_tilde, math, blocks);
                     }
                     start = null;
                     end = null;
                     last = null;
                     braces = 0;
                 }
                 else if (block === "{") {
                     braces++;
                 }
                 else if (block === "}" && braces) {
                     braces--;
                 }
             }
             else {
                 //
                 //  Look for math start delimiters and when
                 //    found, set up the end delimiter.
                 //
                 if (block === inline || block === "$$") {
                     start = i;
                     end = block;
                     braces = 0;
                 }
                 else if (block.substr(1, 5) === "begin") {
                     start = i;
                     end = "\\end" + block.substr(6);
                     braces = 0;
                 }
             }
         }
         if (last) {
             blocks = process_math(start, last, de_tilde, math, blocks);
             start  = null;
             end    = null;
             last   = null;
         }
         return [de_tilde(blocks.join("")), math];
     };
 
     //
     //  Put back the math strings that were saved,
     //    and clear the math array (no need to keep it around).
     //
     var replace_math = function (text, math) {
         if (!window.MathJax) {
             return text;
         }
         text = text.replace(/@@(\d+)@@/g, function (match, n) {
             return math[n];
         });
         return text;
     };
 
     return {
         init : init,
         remove_math : remove_math,
         replace_math : replace_math
     };
 
 }(IPython));

IPython/html/static/notebook/js/notebook.js

@@ -1,2213 +1,2213 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // Notebook
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
 
     var utils = IPython.utils;
 
     /**
      * A notebook contains and manages cells.
      * 
      * @class Notebook
      * @constructor
      * @param {String} selector A jQuery selector for the notebook's DOM element
      * @param {Object} [options] A config object
      */
     var Notebook = function (selector, options) {
         var options = options || {};
         this._baseProjectUrl = options.baseProjectUrl;
         this.notebook_path = options.notebookPath;
         this.notebook_name = options.notebookName;
         this.element = $(selector);
         this.element.scroll();
         this.element.data("notebook", this);
         this.next_prompt_number = 1;
         this.session = null;
         this.kernel = null;
         this.clipboard = null;
         this.undelete_backup = null;
         this.undelete_index = null;
         this.undelete_below = false;
         this.paste_enabled = false;
         // It is important to start out in command mode to match the intial mode
         // of the KeyboardManager.
         this.mode = 'command';
         this.set_dirty(false);
         this.metadata = {};
         this._checkpoint_after_save = false;
         this.last_checkpoint = null;
         this.checkpoints = [];
         this.autosave_interval = 0;
         this.autosave_timer = null;
         // autosave *at most* every two minutes
         this.minimum_autosave_interval = 120000;
         // single worksheet for now
         this.worksheet_metadata = {};
         this.notebook_name_blacklist_re = /[\/\\:]/;
         this.nbformat = 3 // Increment this when changing the nbformat
         this.nbformat_minor = 0 // Increment this when changing the nbformat
         this.style();
         this.create_elements();
         this.bind_events();
     };
 
     /**
      * Tweak the notebook's CSS style.
      * 
      * @method style
      */
     Notebook.prototype.style = function () {
         $('div#notebook').addClass('border-box-sizing');
     };
 
     /**
      * Get the root URL of the notebook server.
      * 
      * @method baseProjectUrl
      * @return {String} The base project URL
      */
     Notebook.prototype.baseProjectUrl = function() {
         return this._baseProjectUrl || $('body').data('baseProjectUrl');
     };
 
     Notebook.prototype.notebookName = function() {
         return $('body').data('notebookName');
     };
     
     Notebook.prototype.notebookPath = function() {
         return $('body').data('notebookPath');
     };
     
     /**
      * Create an HTML and CSS representation of the notebook.
      * 
      * @method create_elements
      */
     Notebook.prototype.create_elements = function () {
         var that = this;
         this.element.attr('tabindex','-1');
         this.container = $("<div/>").addClass("container").attr("id", "notebook-container");
         // We add this end_space div to the end of the notebook div to:
         // i) provide a margin between the last cell and the end of the notebook
         // ii) to prevent the div from scrolling up when the last cell is being
         // edited, but is too low on the page, which browsers will do automatically.
         var end_space = $('<div/>').addClass('end_space');
         end_space.dblclick(function (e) {
             var ncells = that.ncells();
             that.insert_cell_below('code',ncells-1);
         });
         this.element.append(this.container);
         this.container.append(end_space);
     };
 
     /**
      * Bind JavaScript events: key presses and custom IPython events.
      * 
      * @method bind_events
      */
     Notebook.prototype.bind_events = function () {
         var that = this;
 
         $([IPython.events]).on('set_next_input.Notebook', function (event, data) {
             var index = that.find_cell_index(data.cell);
             var new_cell = that.insert_cell_below('code',index);
             new_cell.set_text(data.text);
             that.dirty = true;
         });
 
         $([IPython.events]).on('set_dirty.Notebook', function (event, data) {
             that.dirty = data.value;
         });
 
         $([IPython.events]).on('select.Cell', function (event, data) {
             var index = that.find_cell_index(data.cell);
             that.select(index);
         });
 
         $([IPython.events]).on('edit_mode.Cell', function (event, data) {
             var index = that.find_cell_index(data.cell);
             that.select(index);
             that.edit_mode();
         });
 
         $([IPython.events]).on('command_mode.Cell', function (event, data) {
             that.command_mode();
         });
 
         $([IPython.events]).on('status_autorestarting.Kernel', function () {
             IPython.dialog.modal({
                 title: "Kernel Restarting",
                 body: "The kernel appears to have died. It will restart automatically.",
                 buttons: {
                     OK : {
                         class : "btn-primary"
                     }
                 }
             });
         });
 
         var collapse_time = function (time) {
             var app_height = $('#ipython-main-app').height(); // content height
             var splitter_height = $('div#pager_splitter').outerHeight(true);
             var new_height = app_height - splitter_height;
             that.element.animate({height : new_height + 'px'}, time);
         };
 
         this.element.bind('collapse_pager', function (event, extrap) {
             var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
             collapse_time(time);
         });
 
         var expand_time = function (time) {
             var app_height = $('#ipython-main-app').height(); // content height
             var splitter_height = $('div#pager_splitter').outerHeight(true);
             var pager_height = $('div#pager').outerHeight(true);
             var new_height = app_height - pager_height - splitter_height;
             that.element.animate({height : new_height + 'px'}, time);
         };
 
         this.element.bind('expand_pager', function (event, extrap) {
             var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
             expand_time(time);
         });
         
         // Firefox 22 broke $(window).on("beforeunload")
         // I'm not sure why or how.
         window.onbeforeunload = function (e) {
             // TODO: Make killing the kernel configurable.
             var kill_kernel = false;
             if (kill_kernel) {
                 that.session.kill_kernel();
             }
             // if we are autosaving, trigger an autosave on nav-away.
             // still warn, because if we don't the autosave may fail.
             if (that.dirty) {
                 if ( that.autosave_interval ) {
                     // schedule autosave in a timeout
                     // this gives you a chance to forcefully discard changes
                     // by reloading the page if you *really* want to.
                     // the timer doesn't start until you *dismiss* the dialog.
                     setTimeout(function () {
                         if (that.dirty) {
                             that.save_notebook();
                         }
                     }, 1000);
                     return "Autosave in progress, latest changes may be lost.";
                 } else {
                     return "Unsaved changes will be lost.";
                 }
             };
             // Null is the *only* return value that will make the browser not
             // pop up the "don't leave" dialog.
             return null;
         };
     };
 
     /**
      * Set the dirty flag, and trigger the set_dirty.Notebook event
      * 
      * @method set_dirty
      */
     Notebook.prototype.set_dirty = function (value) {
         if (value === undefined) {
             value = true;
         }
         if (this.dirty == value) {
             return;
         }
         $([IPython.events]).trigger('set_dirty.Notebook', {value: value});
     };
 
     /**
      * Scroll the top of the page to a given cell.
      * 
      * @method scroll_to_cell
      * @param {Number} cell_number An index of the cell to view
      * @param {Number} time Animation time in milliseconds
      * @return {Number} Pixel offset from the top of the container
      */
     Notebook.prototype.scroll_to_cell = function (cell_number, time) {
         var cells = this.get_cells();
         var time = time || 0;
         cell_number = Math.min(cells.length-1,cell_number);
         cell_number = Math.max(0             ,cell_number);
         var scroll_value = cells[cell_number].element.position().top-cells[0].element.position().top ;
         this.element.animate({scrollTop:scroll_value}, time);
         return scroll_value;
     };
 
     /**
      * Scroll to the bottom of the page.
      * 
      * @method scroll_to_bottom
      */
     Notebook.prototype.scroll_to_bottom = function () {
         this.element.animate({scrollTop:this.element.get(0).scrollHeight}, 0);
     };
 
     /**
      * Scroll to the top of the page.
      * 
      * @method scroll_to_top
      */
     Notebook.prototype.scroll_to_top = function () {
         this.element.animate({scrollTop:0}, 0);
     };
 
     // Edit Notebook metadata
 
     Notebook.prototype.edit_metadata = function () {
         var that = this;
         IPython.dialog.edit_metadata(this.metadata, function (md) {
             that.metadata = md;
         }, 'Notebook');
     };
 
     // Cell indexing, retrieval, etc.
 
     /**
      * Get all cell elements in the notebook.
      * 
      * @method get_cell_elements
      * @return {jQuery} A selector of all cell elements
      */
     Notebook.prototype.get_cell_elements = function () {
         return this.container.children("div.cell");
     };
 
     /**
      * Get a particular cell element.
      * 
      * @method get_cell_element
      * @param {Number} index An index of a cell to select
      * @return {jQuery} A selector of the given cell.
      */
     Notebook.prototype.get_cell_element = function (index) {
         var result = null;
         var e = this.get_cell_elements().eq(index);
         if (e.length !== 0) {
             result = e;
         }
         return result;
     };
 
     /**
      * Count the cells in this notebook.
      * 
      * @method ncells
      * @return {Number} The number of cells in this notebook
      */
     Notebook.prototype.ncells = function () {
         return this.get_cell_elements().length;
     };
 
     /**
      * Get all Cell objects in this notebook.
      * 
      * @method get_cells
      * @return {Array} This notebook's Cell objects
      */
     // TODO: we are often calling cells as cells()[i], which we should optimize
     // to cells(i) or a new method.
     Notebook.prototype.get_cells = function () {
         return this.get_cell_elements().toArray().map(function (e) {
             return $(e).data("cell");
         });
     };
 
     /**
      * Get a Cell object from this notebook.
      * 
      * @method get_cell
      * @param {Number} index An index of a cell to retrieve
      * @return {Cell} A particular cell
      */
     Notebook.prototype.get_cell = function (index) {
         var result = null;
         var ce = this.get_cell_element(index);
         if (ce !== null) {
             result = ce.data('cell');
         }
         return result;
     }
 
     /**
      * Get the cell below a given cell.
      * 
      * @method get_next_cell
      * @param {Cell} cell The provided cell
      * @return {Cell} The next cell
      */
     Notebook.prototype.get_next_cell = function (cell) {
         var result = null;
         var index = this.find_cell_index(cell);
         if (this.is_valid_cell_index(index+1)) {
             result = this.get_cell(index+1);
         }
         return result;
     }
 
     /**
      * Get the cell above a given cell.
      * 
      * @method get_prev_cell
      * @param {Cell} cell The provided cell
      * @return {Cell} The previous cell
      */
     Notebook.prototype.get_prev_cell = function (cell) {
         // TODO: off-by-one
         // nb.get_prev_cell(nb.get_cell(1)) is null
         var result = null;
         var index = this.find_cell_index(cell);
         if (index !== null && index > 1) {
             result = this.get_cell(index-1);
         }
         return result;
     }
     
     /**
      * Get the numeric index of a given cell.
      * 
      * @method find_cell_index
      * @param {Cell} cell The provided cell
      * @return {Number} The cell's numeric index
      */
     Notebook.prototype.find_cell_index = function (cell) {
         var result = null;
         this.get_cell_elements().filter(function (index) {
             if ($(this).data("cell") === cell) {
                 result = index;
             };
         });
         return result;
     };
 
     /**
      * Get a given index , or the selected index if none is provided.
      * 
      * @method index_or_selected
      * @param {Number} index A cell's index
      * @return {Number} The given index, or selected index if none is provided.
      */
     Notebook.prototype.index_or_selected = function (index) {
         var i;
         if (index === undefined || index === null) {
             i = this.get_selected_index();
             if (i === null) {
                 i = 0;
             }
         } else {
             i = index;
         }
         return i;
     };
 
     /**
      * Get the currently selected cell.
      * @method get_selected_cell
      * @return {Cell} The selected cell
      */
     Notebook.prototype.get_selected_cell = function () {
         var index = this.get_selected_index();
         return this.get_cell(index);
     };
 
     /**
      * Check whether a cell index is valid.
      * 
      * @method is_valid_cell_index
      * @param {Number} index A cell index
      * @return True if the index is valid, false otherwise
      */
     Notebook.prototype.is_valid_cell_index = function (index) {
         if (index !== null && index >= 0 && index < this.ncells()) {
             return true;
         } else {
             return false;
         };
     }
 
     /**
      * Get the index of the currently selected cell.
      
      * @method get_selected_index
      * @return {Number} The selected cell's numeric index
      */
     Notebook.prototype.get_selected_index = function () {
         var result = null;
         this.get_cell_elements().filter(function (index) {
             if ($(this).data("cell").selected === true) {
                 result = index;
             };
         });
         return result;
     };
 
 
     // Cell selection.
 
     /**
      * Programmatically select a cell.
      * 
      * @method select
      * @param {Number} index A cell's index
      * @return {Notebook} This notebook
      */
     Notebook.prototype.select = function (index) {
         if (this.is_valid_cell_index(index)) {
             var sindex = this.get_selected_index()
             if (sindex !== null && index !== sindex) {
                 this.command_mode();
                 this.get_cell(sindex).unselect();
             };
             var cell = this.get_cell(index);
             cell.select();
             if (cell.cell_type === 'heading') {
                 $([IPython.events]).trigger('selected_cell_type_changed.Notebook',
                     {'cell_type':cell.cell_type,level:cell.level}
                 );
             } else {
                 $([IPython.events]).trigger('selected_cell_type_changed.Notebook',
                     {'cell_type':cell.cell_type}
                 );
             };
         };
         return this;
     };
 
     /**
      * Programmatically select the next cell.
      *
      * @method select_next
      * @return {Notebook} This notebook
      */
     Notebook.prototype.select_next = function () {
         var index = this.get_selected_index();
         this.select(index+1);
         return this;
     };
 
     /**
      * Programmatically select the previous cell.
      *
      * @method select_prev
      * @return {Notebook} This notebook
      */
     Notebook.prototype.select_prev = function () {
         var index = this.get_selected_index();
         this.select(index-1);
         return this;
     };
 
 
     // Edit/Command mode
 
     Notebook.prototype.get_edit_index = function () {
         var result = null;
         this.get_cell_elements().filter(function (index) {
             if ($(this).data("cell").mode === 'edit') {
                 result = index;
             };
         });
         return result;
     };
 
     Notebook.prototype.command_mode = function () {
         if (this.mode !== 'command') {
             var index = this.get_edit_index();
             var cell = this.get_cell(index);
             if (cell) {
                 cell.command_mode();
             };
             this.mode = 'command';
             IPython.keyboard_manager.command_mode();
         };
     };
 
     Notebook.prototype.edit_mode = function () {
         if (this.mode !== 'edit') {
             var cell = this.get_selected_cell();
             if (cell === null) {return;}  // No cell is selected
             // We need to set the mode to edit to prevent reentering this method
             // when cell.edit_mode() is called below.
             this.mode = 'edit';
             IPython.keyboard_manager.edit_mode();
             cell.edit_mode();
         };
     };
 
     Notebook.prototype.focus_cell = function () {
         var cell = this.get_selected_cell();
         if (cell === null) {return;}  // No cell is selected
         cell.focus_cell();
     };
 
     // Cell movement
 
     /**
      * Move given (or selected) cell up and select it.
      * 
      * @method move_cell_up
      * @param [index] {integer} cell index
      * @return {Notebook} This notebook
      **/
     Notebook.prototype.move_cell_up = function (index) {
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i) && i > 0) {
             var pivot = this.get_cell_element(i-1);
             var tomove = this.get_cell_element(i);
             if (pivot !== null && tomove !== null) {
                 tomove.detach();
                 pivot.before(tomove);
                 this.select(i-1);
                 var cell = this.get_selected_cell();
                 cell.focus_cell();
             };
             this.set_dirty(true);
         };
         return this;
     };
 
 
     /**
      * Move given (or selected) cell down and select it
      * 
      * @method move_cell_down
      * @param [index] {integer} cell index
      * @return {Notebook} This notebook
      **/
     Notebook.prototype.move_cell_down = function (index) {
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i) && this.is_valid_cell_index(i+1)) {
             var pivot = this.get_cell_element(i+1);
             var tomove = this.get_cell_element(i);
             if (pivot !== null && tomove !== null) {
                 tomove.detach();
                 pivot.after(tomove);
                 this.select(i+1);
                 var cell = this.get_selected_cell();
                 cell.focus_cell();
             };
         };
         this.set_dirty();
         return this;
     };
 
 
     // Insertion, deletion.
 
     /**
      * Delete a cell from the notebook.
      * 
      * @method delete_cell
      * @param [index] A cell's numeric index
      * @return {Notebook} This notebook
      */
     Notebook.prototype.delete_cell = function (index) {
         var i = this.index_or_selected(index);
         var cell = this.get_selected_cell();
         this.undelete_backup = cell.toJSON();
         $('#undelete_cell').removeClass('disabled');
         if (this.is_valid_cell_index(i)) {
             var old_ncells = this.ncells();
             var ce = this.get_cell_element(i);
             ce.remove();
             if (i === 0) {
                 // Always make sure we have at least one cell.
                 if (old_ncells === 1) {
                     this.insert_cell_below('code');
                 }
                 this.select(0);
                 this.undelete_index = 0;
                 this.undelete_below = false;
             } else if (i === old_ncells-1 && i !== 0) {
                 this.select(i-1);
                 this.undelete_index = i - 1;
                 this.undelete_below = true;
             } else {
                 this.select(i);
                 this.undelete_index = i;
                 this.undelete_below = false;
             };
             $([IPython.events]).trigger('delete.Cell', {'cell': cell, 'index': i});
             this.set_dirty(true);
         };
         return this;
     };
 
     /**
      * Restore the most recently deleted cell.
      * 
      * @method undelete
      */
     Notebook.prototype.undelete_cell = function() {
         if (this.undelete_backup !== null && this.undelete_index !== null) {
             var current_index = this.get_selected_index();
             if (this.undelete_index < current_index) {
                 current_index = current_index + 1;
             }
             if (this.undelete_index >= this.ncells()) {
                 this.select(this.ncells() - 1);
             }
             else {
                 this.select(this.undelete_index);
             }
             var cell_data = this.undelete_backup;
             var new_cell = null;
             if (this.undelete_below) {
                 new_cell = this.insert_cell_below(cell_data.cell_type);
             } else {
                 new_cell = this.insert_cell_above(cell_data.cell_type);
             }
             new_cell.fromJSON(cell_data);
             if (this.undelete_below) {
                 this.select(current_index+1);
             } else {
                 this.select(current_index);
             }
             this.undelete_backup = null;
             this.undelete_index = null;
         }
         $('#undelete_cell').addClass('disabled');
     }
 
     /**
      * Insert a cell so that after insertion the cell is at given index.
      *
      * Similar to insert_above, but index parameter is mandatory
      *
      * Index will be brought back into the accissible range [0,n]
      *
      * @method insert_cell_at_index
      * @param type {string} in ['code','markdown','heading']
      * @param [index] {int} a valid index where to inser cell
      *
      * @return cell {cell|null} created cell or null
      **/
     Notebook.prototype.insert_cell_at_index = function(type, index){
 
         var ncells = this.ncells();
         var index = Math.min(index,ncells);
             index = Math.max(index,0);
         var cell = null;
 
         if (ncells === 0 || this.is_valid_cell_index(index) || index === ncells) {
             if (type === 'code') {
                 cell = new IPython.CodeCell(this.kernel);
                 cell.set_input_prompt();
             } else if (type === 'markdown') {
                 cell = new IPython.MarkdownCell();
             } else if (type === 'raw') {
                 cell = new IPython.RawCell();
             } else if (type === 'heading') {
                 cell = new IPython.HeadingCell();
             }
 
             if(this._insert_element_at_index(cell.element,index)) {
                 cell.render();
                 $([IPython.events]).trigger('create.Cell', {'cell': cell, 'index': index});
                 cell.refresh();
                 // We used to select the cell after we refresh it, but there
                 // are now cases were this method is called where select is
                 // not appropriate. The selection logic should be handled by the
                 // caller of the the top level insert_cell methods.
                 this.set_dirty(true);
             }
         }
         return cell;
 
     };
 
     /**
      * Insert an element at given cell index.
      *
      * @method _insert_element_at_index
      * @param element {dom element} a cell element
      * @param [index] {int} a valid index where to inser cell
      * @private
      *
      * return true if everything whent fine.
      **/
     Notebook.prototype._insert_element_at_index = function(element, index){
         if (element === undefined){
             return false;
         }
 
         var ncells = this.ncells();
 
         if (ncells === 0) {
             // special case append if empty
             this.element.find('div.end_space').before(element);
         } else if ( ncells === index ) {
             // special case append it the end, but not empty
             this.get_cell_element(index-1).after(element);
         } else if (this.is_valid_cell_index(index)) {
             // otherwise always somewhere to append to
             this.get_cell_element(index).before(element);
         } else {
             return false;
         }
 
         if (this.undelete_index !== null && index <= this.undelete_index) {
             this.undelete_index = this.undelete_index + 1;
             this.set_dirty(true);
         }
         return true;
     };
 
     /**
      * Insert a cell of given type above given index, or at top
      * of notebook if index smaller than 0.
      *
      * default index value is the one of currently selected cell
      *
      * @method insert_cell_above
      * @param type {string} cell type
      * @param [index] {integer}
      *
      * @return handle to created cell or null
      **/
     Notebook.prototype.insert_cell_above = function (type, index) {
         index = this.index_or_selected(index);
         return this.insert_cell_at_index(type, index);
     };
 
     /**
      * Insert a cell of given type below given index, or at bottom
      * of notebook if index greater thatn number of cell
      *
      * default index value is the one of currently selected cell
      *
      * @method insert_cell_below
      * @param type {string} cell type
      * @param [index] {integer}
      *
      * @return handle to created cell or null
      *
      **/
     Notebook.prototype.insert_cell_below = function (type, index) {
         index = this.index_or_selected(index);
         return this.insert_cell_at_index(type, index+1);
     };
 
 
     /**
      * Insert cell at end of notebook
      *
      * @method insert_cell_at_bottom
      * @param {String} type cell type
      *
      * @return the added cell; or null
      **/
     Notebook.prototype.insert_cell_at_bottom = function (type){
         var len = this.ncells();
         return this.insert_cell_below(type,len-1);
     };
 
     /**
      * Turn a cell into a code cell.
      * 
      * @method to_code
      * @param {Number} [index] A cell's index
      */
     Notebook.prototype.to_code = function (index) {
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i)) {
             var source_element = this.get_cell_element(i);
             var source_cell = source_element.data("cell");
             if (!(source_cell instanceof IPython.CodeCell)) {
                 var target_cell = this.insert_cell_below('code',i);
                 var text = source_cell.get_text();
                 if (text === source_cell.placeholder) {
                     text = '';
                 }
                 target_cell.set_text(text);
                 // make this value the starting point, so that we can only undo
                 // to this state, instead of a blank cell
                 target_cell.code_mirror.clearHistory();
                 source_element.remove();
                 this.select(i);
                 this.edit_mode();
                 this.set_dirty(true);
             };
         };
     };
 
     /**
      * Turn a cell into a Markdown cell.
      * 
      * @method to_markdown
      * @param {Number} [index] A cell's index
      */
     Notebook.prototype.to_markdown = function (index) {
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i)) {
             var source_element = this.get_cell_element(i);
             var source_cell = source_element.data("cell");
             if (!(source_cell instanceof IPython.MarkdownCell)) {
                 var target_cell = this.insert_cell_below('markdown',i);
                 var text = source_cell.get_text();
                 if (text === source_cell.placeholder) {
                     text = '';
                 };
                 // We must show the editor before setting its contents
                 target_cell.unrender();
                 target_cell.set_text(text);
                 // make this value the starting point, so that we can only undo
                 // to this state, instead of a blank cell
                 target_cell.code_mirror.clearHistory();
                 source_element.remove();
                 this.select(i);
                 this.edit_mode();
                 this.set_dirty(true);
             };
         };
     };
 
     /**
      * Turn a cell into a raw text cell.
      * 
      * @method to_raw
      * @param {Number} [index] A cell's index
      */
     Notebook.prototype.to_raw = function (index) {
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i)) {
             var source_element = this.get_cell_element(i);
             var source_cell = source_element.data("cell");
             var target_cell = null;
             if (!(source_cell instanceof IPython.RawCell)) {
                 target_cell = this.insert_cell_below('raw',i);
                 var text = source_cell.get_text();
                 if (text === source_cell.placeholder) {
                     text = '';
                 };
                 // We must show the editor before setting its contents
                 target_cell.unrender();
                 target_cell.set_text(text);
                 // make this value the starting point, so that we can only undo
                 // to this state, instead of a blank cell
                 target_cell.code_mirror.clearHistory();
                 source_element.remove();
                 this.select(i);
                 this.edit_mode();
                 this.set_dirty(true);
             };
         };
     };
 
     /**
      * Turn a cell into a heading cell.
      * 
      * @method to_heading
      * @param {Number} [index] A cell's index
      * @param {Number} [level] A heading level (e.g., 1 becomes &lt;h1&gt;)
      */
     Notebook.prototype.to_heading = function (index, level) {
         level = level || 1;
         var i = this.index_or_selected(index);
         if (this.is_valid_cell_index(i)) {
             var source_element = this.get_cell_element(i);
             var source_cell = source_element.data("cell");
             var target_cell = null;
             if (source_cell instanceof IPython.HeadingCell) {
                 source_cell.set_level(level);
             } else {
                 target_cell = this.insert_cell_below('heading',i);
                 var text = source_cell.get_text();
                 if (text === source_cell.placeholder) {
                     text = '';
                 };
                 // We must show the editor before setting its contents
                 target_cell.set_level(level);
                 target_cell.unrender();
                 target_cell.set_text(text);
                 // make this value the starting point, so that we can only undo
                 // to this state, instead of a blank cell
                 target_cell.code_mirror.clearHistory();
                 source_element.remove();
                 this.select(i);
             };
             this.edit_mode();
             this.set_dirty(true);
             $([IPython.events]).trigger('selected_cell_type_changed.Notebook',
                 {'cell_type':'heading',level:level}
             );
         };
     };
 
 
     // Cut/Copy/Paste
 
     /**
      * Enable UI elements for pasting cells.
      * 
      * @method enable_paste
      */
     Notebook.prototype.enable_paste = function () {
         var that = this;
         if (!this.paste_enabled) {
             $('#paste_cell_replace').removeClass('disabled')
                 .on('click', function () {that.paste_cell_replace();});
             $('#paste_cell_above').removeClass('disabled')
                 .on('click', function () {that.paste_cell_above();});
             $('#paste_cell_below').removeClass('disabled')
                 .on('click', function () {that.paste_cell_below();});
             this.paste_enabled = true;
         };
     };
 
     /**
      * Disable UI elements for pasting cells.
      * 
      * @method disable_paste
      */
     Notebook.prototype.disable_paste = function () {
         if (this.paste_enabled) {
             $('#paste_cell_replace').addClass('disabled').off('click');
             $('#paste_cell_above').addClass('disabled').off('click');
             $('#paste_cell_below').addClass('disabled').off('click');
             this.paste_enabled = false;
         };
     };
 
     /**
      * Cut a cell.
      * 
      * @method cut_cell
      */
     Notebook.prototype.cut_cell = function () {
         this.copy_cell();
         this.delete_cell();
     }
 
     /**
      * Copy a cell.
      * 
      * @method copy_cell
      */
     Notebook.prototype.copy_cell = function () {
         var cell = this.get_selected_cell();
         this.clipboard = cell.toJSON();
         this.enable_paste();
     };
 
     /**
      * Replace the selected cell with a cell in the clipboard.
      * 
      * @method paste_cell_replace
      */
     Notebook.prototype.paste_cell_replace = function () {
         if (this.clipboard !== null && this.paste_enabled) {
             var cell_data = this.clipboard;
             var new_cell = this.insert_cell_above(cell_data.cell_type);
             new_cell.fromJSON(cell_data);
             var old_cell = this.get_next_cell(new_cell);
             this.delete_cell(this.find_cell_index(old_cell));
             this.select(this.find_cell_index(new_cell));
         };
     };
 
     /**
      * Paste a cell from the clipboard above the selected cell.
      * 
      * @method paste_cell_above
      */
     Notebook.prototype.paste_cell_above = function () {
         if (this.clipboard !== null && this.paste_enabled) {
             var cell_data = this.clipboard;
             var new_cell = this.insert_cell_above(cell_data.cell_type);
             new_cell.fromJSON(cell_data);
         };
     };
 
     /**
      * Paste a cell from the clipboard below the selected cell.
      * 
      * @method paste_cell_below
      */
     Notebook.prototype.paste_cell_below = function () {
         if (this.clipboard !== null && this.paste_enabled) {
             var cell_data = this.clipboard;
             var new_cell = this.insert_cell_below(cell_data.cell_type);
             new_cell.fromJSON(cell_data);
         };
     };
 
     // Split/merge
 
     /**
      * Split the selected cell into two, at the cursor.
      * 
      * @method split_cell
      */
     Notebook.prototype.split_cell = function () {
         var mdc = IPython.MarkdownCell;
         var rc = IPython.RawCell;
         var cell = this.get_selected_cell();
         if (cell.is_splittable()) {
             var texta = cell.get_pre_cursor();
             var textb = cell.get_post_cursor();
             if (cell instanceof IPython.CodeCell) {
                 // In this case the operations keep the notebook in its existing mode
                 // so we don't need to do any post-op mode changes.
                 cell.set_text(textb);
                 var new_cell = this.insert_cell_above('code');
                 new_cell.set_text(texta);
             } else if ((cell instanceof mdc && !cell.rendered) || (cell instanceof rc)) {
                 // We know cell is !rendered so we can use set_text.
                 cell.set_text(textb);
                 var new_cell = this.insert_cell_above(cell.cell_type);
                 // Unrender the new cell so we can call set_text.
                 new_cell.unrender();
                 new_cell.set_text(texta);
             }
         };
     };
 
     /**
      * Combine the selected cell into the cell above it.
      * 
      * @method merge_cell_above
      */
     Notebook.prototype.merge_cell_above = function () {
         var mdc = IPython.MarkdownCell;
         var rc = IPython.RawCell;
         var index = this.get_selected_index();
         var cell = this.get_cell(index);
         var render = cell.rendered;
         if (!cell.is_mergeable()) {
             return;
         }
         if (index > 0) {
             var upper_cell = this.get_cell(index-1);
             if (!upper_cell.is_mergeable()) {
                 return;
             }
             var upper_text = upper_cell.get_text();
             var text = cell.get_text();
             if (cell instanceof IPython.CodeCell) {
                 cell.set_text(upper_text+'\n'+text);
             } else if ((cell instanceof mdc) || (cell instanceof rc)) {
                 cell.unrender(); // Must unrender before we set_text.
                 cell.set_text(upper_text+'\n\n'+text);
                 if (render) {
                     // The rendered state of the final cell should match
                     // that of the original selected cell;
                     cell.render();
                 }
             };
             this.delete_cell(index-1);
             this.select(this.find_cell_index(cell));
         };
     };
 
     /**
      * Combine the selected cell into the cell below it.
      * 
      * @method merge_cell_below
      */
     Notebook.prototype.merge_cell_below = function () {
         var mdc = IPython.MarkdownCell;
         var rc = IPython.RawCell;
         var index = this.get_selected_index();
         var cell = this.get_cell(index);
         var render = cell.rendered;
         if (!cell.is_mergeable()) {
             return;
         }
         if (index < this.ncells()-1) {
             var lower_cell = this.get_cell(index+1);
             if (!lower_cell.is_mergeable()) {
                 return;
             }
             var lower_text = lower_cell.get_text();
             var text = cell.get_text();
             if (cell instanceof IPython.CodeCell) {
                 cell.set_text(text+'\n'+lower_text);
             } else if ((cell instanceof mdc) || (cell instanceof rc)) {
                 cell.unrender(); // Must unrender before we set_text.
                 cell.set_text(text+'\n\n'+lower_text);
                 if (render) {
                     // The rendered state of the final cell should match
                     // that of the original selected cell;
                     cell.render();
                 }
             };
             this.delete_cell(index+1);
             this.select(this.find_cell_index(cell));
         };
     };
 
 
     // Cell collapsing and output clearing
 
     /**
      * Hide a cell's output.
      * 
      * @method collapse
      * @param {Number} index A cell's numeric index
      */
     Notebook.prototype.collapse = function (index) {
         var i = this.index_or_selected(index);
         this.get_cell(i).collapse();
         this.set_dirty(true);
     };
 
     /**
      * Show a cell's output.
      * 
      * @method expand
      * @param {Number} index A cell's numeric index
      */
     Notebook.prototype.expand = function (index) {
         var i = this.index_or_selected(index);
         this.get_cell(i).expand();
         this.set_dirty(true);
     };
 
     /** Toggle whether a cell's output is collapsed or expanded.
      * 
      * @method toggle_output
      * @param {Number} index A cell's numeric index
      */
     Notebook.prototype.toggle_output = function (index) {
         var i = this.index_or_selected(index);
         this.get_cell(i).toggle_output();
         this.set_dirty(true);
     };
 
     /**
      * Toggle a scrollbar for long cell outputs.
      * 
      * @method toggle_output_scroll
      * @param {Number} index A cell's numeric index
      */
     Notebook.prototype.toggle_output_scroll = function (index) {
         var i = this.index_or_selected(index);
         this.get_cell(i).toggle_output_scroll();
     };
 
     /**
      * Hide each code cell's output area.
      * 
      * @method collapse_all_output
      */
     Notebook.prototype.collapse_all_output = function () {
         var ncells = this.ncells();
         var cells = this.get_cells();
         for (var i=0; i<ncells; i++) {
             if (cells[i] instanceof IPython.CodeCell) {
                 cells[i].output_area.collapse();
             }
         };
         // this should not be set if the `collapse` key is removed from nbformat
         this.set_dirty(true);
     };
 
     /**
      * Expand each code cell's output area, and add a scrollbar for long output.
      * 
      * @method scroll_all_output
      */
     Notebook.prototype.scroll_all_output = function () {
         var ncells = this.ncells();
         var cells = this.get_cells();
         for (var i=0; i<ncells; i++) {
             if (cells[i] instanceof IPython.CodeCell) {
                 cells[i].output_area.expand();
                 cells[i].output_area.scroll_if_long();
             }
         };
         // this should not be set if the `collapse` key is removed from nbformat
         this.set_dirty(true);
     };
 
     /**
      * Expand each code cell's output area, and remove scrollbars.
      * 
      * @method expand_all_output
      */
     Notebook.prototype.expand_all_output = function () {
         var ncells = this.ncells();
         var cells = this.get_cells();
         for (var i=0; i<ncells; i++) {
             if (cells[i] instanceof IPython.CodeCell) {
                 cells[i].output_area.expand();
                 cells[i].output_area.unscroll_area();
             }
         };
         // this should not be set if the `collapse` key is removed from nbformat
         this.set_dirty(true);
     };
 
     /**
      * Clear each code cell's output area.
      * 
      * @method clear_all_output
      */
     Notebook.prototype.clear_all_output = function () {
         var ncells = this.ncells();
         var cells = this.get_cells();
         for (var i=0; i<ncells; i++) {
             if (cells[i] instanceof IPython.CodeCell) {
                 cells[i].clear_output();
                 // Make all In[] prompts blank, as well
                 // TODO: make this configurable (via checkbox?)
                 cells[i].set_input_prompt();
             }
         };
         this.set_dirty(true);
     };
 
 
     // Other cell functions: line numbers, ...
 
     /**
      * Toggle line numbers in the selected cell's input area.
      * 
      * @method cell_toggle_line_numbers
      */
     Notebook.prototype.cell_toggle_line_numbers = function() {
         this.get_selected_cell().toggle_line_numbers();
     };
 
     // Session related things
 
     /**
      * Start a new session and set it on each code cell.
      * 
      * @method start_session
      */
     Notebook.prototype.start_session = function () {
         this.session = new IPython.Session(this.notebook_name, this.notebook_path, this);
         this.session.start($.proxy(this._session_started, this));
     };
 
 
     /**
      * Once a session is started, link the code cells to the kernel
      *
      */
     Notebook.prototype._session_started = function(){
         this.kernel = this.session.kernel;
         var ncells = this.ncells();
         for (var i=0; i<ncells; i++) {
             var cell = this.get_cell(i);
             if (cell instanceof IPython.CodeCell) {
                 cell.set_kernel(this.session.kernel);
             };
         };  
     };
     
     /**
      * Prompt the user to restart the IPython kernel.
      * 
      * @method restart_kernel
      */
     Notebook.prototype.restart_kernel = function () {
         var that = this;
         IPython.dialog.modal({
             title : "Restart kernel or continue running?",
-            body : $("<p/>").html(
+            body : $("<p/>").text(
                 'Do you want to restart the current kernel?  You will lose all variables defined in it.'
             ),
             buttons : {
                 "Continue running" : {},
                 "Restart" : {
                     "class" : "btn-danger",
                     "click" : function() {
                         that.session.restart_kernel();
                     }
                 }
             }
         });
     };
     
     /**
      * Execute or render cell outputs and go into command mode.
      * 
      * @method execute_cell
      */
     Notebook.prototype.execute_cell = function () {
         // mode = shift, ctrl, alt
         var cell = this.get_selected_cell();
         var cell_index = this.find_cell_index(cell);
         
         cell.execute();
         this.command_mode();
         cell.focus_cell();
         this.set_dirty(true);
     }
 
     /**
      * Execute or render cell outputs and insert a new cell below.
      * 
      * @method execute_cell_and_insert_below
      */
     Notebook.prototype.execute_cell_and_insert_below = function () {
         var cell = this.get_selected_cell();
         var cell_index = this.find_cell_index(cell);
         
         cell.execute();
 
         // If we are at the end always insert a new cell and return
         if (cell_index === (this.ncells()-1)) {
             this.insert_cell_below('code');
             this.select(cell_index+1);
             this.edit_mode();
             this.scroll_to_bottom();
             this.set_dirty(true);
             return;
         }
   
         // Only insert a new cell, if we ended up in an already populated cell
         var next_text = this.get_cell(cell_index+1).get_text();
         if (/\S/.test(next_text) === true) {
             this.insert_cell_below('code');
         }
         this.select(cell_index+1);
         this.edit_mode();
         this.set_dirty(true);
     };
 
     /**
      * Execute or render cell outputs and select the next cell.
      * 
      * @method execute_cell_and_select_below
      */
     Notebook.prototype.execute_cell_and_select_below = function () {
 
         var cell = this.get_selected_cell();
         var cell_index = this.find_cell_index(cell);
         
         cell.execute();
 
         // If we are at the end always insert a new cell and return
         if (cell_index === (this.ncells()-1)) {
             this.insert_cell_below('code');
             this.select(cell_index+1);
             this.edit_mode();
             this.scroll_to_bottom();
             this.set_dirty(true);
             return;
         }
 
         this.select(cell_index+1);
         this.get_cell(cell_index+1).focus_cell();
         this.set_dirty(true);
     };
 
     /**
      * Execute all cells below the selected cell.
      * 
      * @method execute_cells_below
      */
     Notebook.prototype.execute_cells_below = function () {
         this.execute_cell_range(this.get_selected_index(), this.ncells());
         this.scroll_to_bottom();
     };
 
     /**
      * Execute all cells above the selected cell.
      * 
      * @method execute_cells_above
      */
     Notebook.prototype.execute_cells_above = function () {
         this.execute_cell_range(0, this.get_selected_index());
     };
 
     /**
      * Execute all cells.
      * 
      * @method execute_all_cells
      */
     Notebook.prototype.execute_all_cells = function () {
         this.execute_cell_range(0, this.ncells());
         this.scroll_to_bottom();
     };
 
     /**
      * Execute a contiguous range of cells.
      * 
      * @method execute_cell_range
      * @param {Number} start Index of the first cell to execute (inclusive)
      * @param {Number} end Index of the last cell to execute (exclusive)
      */
     Notebook.prototype.execute_cell_range = function (start, end) {
         for (var i=start; i<end; i++) {
             this.select(i);
             this.execute_cell();
         };
     };
 
     // Persistance and loading
 
     /**
      * Getter method for this notebook's name.
      * 
      * @method get_notebook_name
      * @return {String} This notebook's name
      */
     Notebook.prototype.get_notebook_name = function () {
         var nbname = this.notebook_name.substring(0,this.notebook_name.length-6);
         return nbname;
     };
 
     /**
      * Setter method for this notebook's name.
      *
      * @method set_notebook_name
      * @param {String} name A new name for this notebook
      */
     Notebook.prototype.set_notebook_name = function (name) {
         this.notebook_name = name;
     };
 
     /**
      * Check that a notebook's name is valid.
      * 
      * @method test_notebook_name
      * @param {String} nbname A name for this notebook
      * @return {Boolean} True if the name is valid, false if invalid
      */
     Notebook.prototype.test_notebook_name = function (nbname) {
         nbname = nbname || '';
         if (this.notebook_name_blacklist_re.test(nbname) == false && nbname.length>0) {
             return true;
         } else {
             return false;
         };
     };
 
     /**
      * Load a notebook from JSON (.ipynb).
      * 
      * This currently handles one worksheet: others are deleted.
      * 
      * @method fromJSON
      * @param {Object} data JSON representation of a notebook
      */
     Notebook.prototype.fromJSON = function (data) {
         var content = data.content;
         var ncells = this.ncells();
         var i;
         for (i=0; i<ncells; i++) {
             // Always delete cell 0 as they get renumbered as they are deleted.
             this.delete_cell(0);
         };
         // Save the metadata and name.
         this.metadata = content.metadata;
         this.notebook_name = data.name;
         // Only handle 1 worksheet for now.
         var worksheet = content.worksheets[0];
         if (worksheet !== undefined) {
             if (worksheet.metadata) {
                 this.worksheet_metadata = worksheet.metadata;
             }
             var new_cells = worksheet.cells;
             ncells = new_cells.length;
             var cell_data = null;
             var new_cell = null;
             for (i=0; i<ncells; i++) {
                 cell_data = new_cells[i];
                 // VERSIONHACK: plaintext -> raw
                 // handle never-released plaintext name for raw cells
                 if (cell_data.cell_type === 'plaintext'){
                     cell_data.cell_type = 'raw';
                 }
 
                 new_cell = this.insert_cell_at_index(cell_data.cell_type, i);
                 new_cell.fromJSON(cell_data);
             };
         };
         if (content.worksheets.length > 1) {
             IPython.dialog.modal({
                 title : "Multiple worksheets",
                 body : "This notebook has " + data.worksheets.length + " worksheets, " +
                     "but this version of IPython can only handle the first.  " +
                     "If you save this notebook, worksheets after the first will be lost.",
                 buttons : {
                     OK : {
                         class : "btn-danger"
                     }
                 }
             });
         }
     };
 
     /**
      * Dump this notebook into a JSON-friendly object.
      * 
      * @method toJSON
      * @return {Object} A JSON-friendly representation of this notebook.
      */
     Notebook.prototype.toJSON = function () {
         var cells = this.get_cells();
         var ncells = cells.length;
         var cell_array = new Array(ncells);
         for (var i=0; i<ncells; i++) {
             cell_array[i] = cells[i].toJSON();
         };
         var data = {
             // Only handle 1 worksheet for now.
             worksheets : [{
                 cells: cell_array,
                 metadata: this.worksheet_metadata
             }],
             metadata : this.metadata
         };
         return data;
     };
 
     /**
      * Start an autosave timer, for periodically saving the notebook.
      * 
      * @method set_autosave_interval
      * @param {Integer} interval the autosave interval in milliseconds
      */
     Notebook.prototype.set_autosave_interval = function (interval) {
         var that = this;
         // clear previous interval, so we don't get simultaneous timers
         if (this.autosave_timer) {
             clearInterval(this.autosave_timer);
         }
         
         this.autosave_interval = this.minimum_autosave_interval = interval;
         if (interval) {
             this.autosave_timer = setInterval(function() {
                 if (that.dirty) {
                     that.save_notebook();
                 }
             }, interval);
             $([IPython.events]).trigger("autosave_enabled.Notebook", interval);
         } else {
             this.autosave_timer = null;
             $([IPython.events]).trigger("autosave_disabled.Notebook");
         };
     };
     
     /**
      * Save this notebook on the server.
      * 
      * @method save_notebook
      */
     Notebook.prototype.save_notebook = function (extra_settings) {
         // Create a JSON model to be sent to the server.
         var model = {};
         model.name = this.notebook_name;
         model.path = this.notebook_path;
         model.content = this.toJSON();
         model.content.nbformat = this.nbformat;
         model.content.nbformat_minor = this.nbformat_minor;
         // time the ajax call for autosave tuning purposes.
         var start =  new Date().getTime();
         // We do the call with settings so we can set cache to false.
         var settings = {
             processData : false,
             cache : false,
             type : "PUT",
             data : JSON.stringify(model),
             headers : {'Content-Type': 'application/json'},
             success : $.proxy(this.save_notebook_success, this, start),
             error : $.proxy(this.save_notebook_error, this)
         };
         if (extra_settings) {
             for (var key in extra_settings) {
                 settings[key] = extra_settings[key];
             }
         }
         $([IPython.events]).trigger('notebook_saving.Notebook');
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebook_path,
             this.notebook_name
         );
         $.ajax(url, settings);
     };
     
     /**
      * Success callback for saving a notebook.
      * 
      * @method save_notebook_success
      * @param {Integer} start the time when the save request started
      * @param {Object} data JSON representation of a notebook
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.save_notebook_success = function (start, data, status, xhr) {
         this.set_dirty(false);
         $([IPython.events]).trigger('notebook_saved.Notebook');
         this._update_autosave_interval(start);
         if (this._checkpoint_after_save) {
             this.create_checkpoint();
             this._checkpoint_after_save = false;
         };
     };
     
     /**
      * update the autosave interval based on how long the last save took
      * 
      * @method _update_autosave_interval
      * @param {Integer} timestamp when the save request started
      */
     Notebook.prototype._update_autosave_interval = function (start) {
         var duration = (new Date().getTime() - start);
         if (this.autosave_interval) {
             // new save interval: higher of 10x save duration or parameter (default 30 seconds)
             var interval = Math.max(10 * duration, this.minimum_autosave_interval);
             // round to 10 seconds, otherwise we will be setting a new interval too often
             interval = 10000 * Math.round(interval / 10000);
             // set new interval, if it's changed
             if (interval != this.autosave_interval) {
                 this.set_autosave_interval(interval);
             }
         }
     };
     
     /**
      * Failure callback for saving a notebook.
      * 
      * @method save_notebook_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error HTTP error message
      */
     Notebook.prototype.save_notebook_error = function (xhr, status, error) {
         $([IPython.events]).trigger('notebook_save_failed.Notebook', [xhr, status, error]);
     };
 
     Notebook.prototype.new_notebook = function(){
         var path = this.notebook_path;
         var base_project_url = this._baseProjectUrl;
         var settings = {
             processData : false,
             cache : false,
             type : "POST",
             dataType : "json",
             async : false,
             success : function (data, status, xhr){
                 var notebook_name = data.name;
                 window.open(
                     utils.url_join_encode(
                         base_project_url,
                         'notebooks',
                         path,
                         notebook_name
                     ),
                     '_blank'
                 );
             }
         };
         var url = utils.url_join_encode(
             base_project_url,
             'api/notebooks',
             path
         );
         $.ajax(url,settings);
     };
 
 
     Notebook.prototype.copy_notebook = function(){
         var path = this.notebook_path;
         var base_project_url = this._baseProjectUrl;
         var settings = {
             processData : false,
             cache : false,
             type : "POST",
             dataType : "json",
             data : JSON.stringify({copy_from : this.notebook_name}),
             async : false,
             success : function (data, status, xhr) {
                 window.open(utils.url_join_encode(
                     base_project_url,
                     'notebooks',
                     data.path,
                     data.name
                 ), '_blank');
             }
         };
         var url = utils.url_join_encode(
             base_project_url,
             'api/notebooks',
             path
         );
         $.ajax(url,settings);
     };
 
     Notebook.prototype.rename = function (nbname) {
         var that = this;
         var data = {name: nbname + '.ipynb'};
         var settings = {
             processData : false,
             cache : false,
             type : "PATCH",
             data : JSON.stringify(data),
             dataType: "json",
             headers : {'Content-Type': 'application/json'},
             success : $.proxy(that.rename_success, this),
             error : $.proxy(that.rename_error, this)
         };
         $([IPython.events]).trigger('rename_notebook.Notebook', data);
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebook_path,
             this.notebook_name
         );
         $.ajax(url, settings);
     };
     
     
     Notebook.prototype.rename_success = function (json, status, xhr) {
         this.notebook_name = json.name;
         var name = this.notebook_name;
         var path = json.path;
         this.session.rename_notebook(name, path);
         $([IPython.events]).trigger('notebook_renamed.Notebook', json);
     }
 
     Notebook.prototype.rename_error = function (xhr, status, error) {
         var that = this;
         var dialog = $('<div/>').append(
             $("<p/>").addClass("rename-message")
-            .html('This notebook name already exists.')
+            .text('This notebook name already exists.')
         )
         $([IPython.events]).trigger('notebook_rename_failed.Notebook', [xhr, status, error]);
         IPython.dialog.modal({
             title: "Notebook Rename Error!",
             body: dialog,
             buttons : {
                 "Cancel": {},
                 "OK": {
                     class: "btn-primary",
                     click: function () {
                         IPython.save_widget.rename_notebook();
                 }}
                 },
             open : function (event, ui) {
                 var that = $(this);
                 // Upon ENTER, click the OK button.
                 that.find('input[type="text"]').keydown(function (event, ui) {
                     if (event.which === utils.keycodes.ENTER) {
                         that.find('.btn-primary').first().click();
                     }
                 });
                 that.find('input[type="text"]').focus();
             }
         });
     }
 
     /**
      * Request a notebook's data from the server.
      * 
      * @method load_notebook
      * @param {String} notebook_name and path A notebook to load
      */
     Notebook.prototype.load_notebook = function (notebook_name, notebook_path) {
         var that = this;
         this.notebook_name = notebook_name;
         this.notebook_path = notebook_path;
         // We do the call with settings so we can set cache to false.
         var settings = {
             processData : false,
             cache : false,
             type : "GET",
             dataType : "json",
             success : $.proxy(this.load_notebook_success,this),
             error : $.proxy(this.load_notebook_error,this),
         };
         $([IPython.events]).trigger('notebook_loading.Notebook');
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebook_path,
             this.notebook_name
         );
         $.ajax(url, settings);
     };
 
     /**
      * Success callback for loading a notebook from the server.
      * 
      * Load notebook data from the JSON response.
      * 
      * @method load_notebook_success
      * @param {Object} data JSON representation of a notebook
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.load_notebook_success = function (data, status, xhr) {
         this.fromJSON(data);
         if (this.ncells() === 0) {
             this.insert_cell_below('code');
             this.select(0);
             this.edit_mode();
         } else {
             this.select(0);
             this.command_mode();
         };
         this.set_dirty(false);
         this.scroll_to_top();
         if (data.orig_nbformat !== undefined && data.nbformat !== data.orig_nbformat) {
             var msg = "This notebook has been converted from an older " +
             "notebook format (v"+data.orig_nbformat+") to the current notebook " +
             "format (v"+data.nbformat+"). The next time you save this notebook, the " +
             "newer notebook format will be used and older versions of IPython " +
             "may not be able to read it. To keep the older version, close the " +
             "notebook without saving it.";
             IPython.dialog.modal({
                 title : "Notebook converted",
                 body : msg,
                 buttons : {
                     OK : {
                         class : "btn-primary"
                     }
                 }
             });
         } else if (data.orig_nbformat_minor !== undefined && data.nbformat_minor !== data.orig_nbformat_minor) {
             var that = this;
             var orig_vs = 'v' + data.nbformat + '.' + data.orig_nbformat_minor;
             var this_vs = 'v' + data.nbformat + '.' + this.nbformat_minor;
             var msg = "This notebook is version " + orig_vs + ", but we only fully support up to " +
             this_vs + ".  You can still work with this notebook, but some features " +
             "introduced in later notebook versions may not be available."
 
             IPython.dialog.modal({
                 title : "Newer Notebook",
                 body : msg,
                 buttons : {
                     OK : {
                         class : "btn-danger"
                     }
                 }
             });
 
         }
         
         // Create the session after the notebook is completely loaded to prevent
         // code execution upon loading, which is a security risk.
         if (this.session == null) {
             this.start_session();
         }
         // load our checkpoint list
         this.list_checkpoints();
         
         // load toolbar state
         if (this.metadata.celltoolbar) {
             IPython.CellToolbar.global_show();
             IPython.CellToolbar.activate_preset(this.metadata.celltoolbar);
         }
         
         $([IPython.events]).trigger('notebook_loaded.Notebook');
     };
 
     /**
      * Failure callback for loading a notebook from the server.
      * 
      * @method load_notebook_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error HTTP error message
      */
     Notebook.prototype.load_notebook_error = function (xhr, status, error) {
         $([IPython.events]).trigger('notebook_load_failed.Notebook', [xhr, status, error]);
         if (xhr.status === 400) {
             var msg = error;
         } else if (xhr.status === 500) {
             var msg = "An unknown error occurred while loading this notebook. " +
             "This version can load notebook formats " +
             "v" + this.nbformat + " or earlier.";
         }
         IPython.dialog.modal({
             title: "Error loading notebook",
             body : msg,
             buttons : {
                 "OK": {}
             }
         });
     }
 
     /*********************  checkpoint-related  *********************/
     
     /**
      * Save the notebook then immediately create a checkpoint.
      * 
      * @method save_checkpoint
      */
     Notebook.prototype.save_checkpoint = function () {
         this._checkpoint_after_save = true;
         this.save_notebook();
     };
     
     /**
      * Add a checkpoint for this notebook.
      * for use as a callback from checkpoint creation.
      * 
      * @method add_checkpoint
      */
     Notebook.prototype.add_checkpoint = function (checkpoint) {
         var found = false;
         for (var i = 0; i < this.checkpoints.length; i++) {
             var existing = this.checkpoints[i];
             if (existing.id == checkpoint.id) {
                 found = true;
                 this.checkpoints[i] = checkpoint;
                 break;
             }
         }
         if (!found) {
             this.checkpoints.push(checkpoint);
         }
         this.last_checkpoint = this.checkpoints[this.checkpoints.length - 1];
     };
     
     /**
      * List checkpoints for this notebook.
      * 
      * @method list_checkpoints
      */
     Notebook.prototype.list_checkpoints = function () {
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebook_path,
             this.notebook_name,
             'checkpoints'
         );
         $.get(url).done(
             $.proxy(this.list_checkpoints_success, this)
         ).fail(
             $.proxy(this.list_checkpoints_error, this)
         );
     };
 
     /**
      * Success callback for listing checkpoints.
      * 
      * @method list_checkpoint_success
      * @param {Object} data JSON representation of a checkpoint
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.list_checkpoints_success = function (data, status, xhr) {
         var data = $.parseJSON(data);
         this.checkpoints = data;
         if (data.length) {
             this.last_checkpoint = data[data.length - 1];
         } else {
             this.last_checkpoint = null;
         }
         $([IPython.events]).trigger('checkpoints_listed.Notebook', [data]);
     };
 
     /**
      * Failure callback for listing a checkpoint.
      * 
      * @method list_checkpoint_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error_msg HTTP error message
      */
     Notebook.prototype.list_checkpoints_error = function (xhr, status, error_msg) {
         $([IPython.events]).trigger('list_checkpoints_failed.Notebook');
     };
     
     /**
      * Create a checkpoint of this notebook on the server from the most recent save.
      * 
      * @method create_checkpoint
      */
     Notebook.prototype.create_checkpoint = function () {
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebookPath(),
             this.notebook_name,
             'checkpoints'
         );
         $.post(url).done(
             $.proxy(this.create_checkpoint_success, this)
         ).fail(
             $.proxy(this.create_checkpoint_error, this)
         );
     };
 
     /**
      * Success callback for creating a checkpoint.
      * 
      * @method create_checkpoint_success
      * @param {Object} data JSON representation of a checkpoint
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.create_checkpoint_success = function (data, status, xhr) {
         var data = $.parseJSON(data);
         this.add_checkpoint(data);
         $([IPython.events]).trigger('checkpoint_created.Notebook', data);
     };
 
     /**
      * Failure callback for creating a checkpoint.
      * 
      * @method create_checkpoint_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error_msg HTTP error message
      */
     Notebook.prototype.create_checkpoint_error = function (xhr, status, error_msg) {
         $([IPython.events]).trigger('checkpoint_failed.Notebook');
     };
     
     Notebook.prototype.restore_checkpoint_dialog = function (checkpoint) {
         var that = this;
         var checkpoint = checkpoint || this.last_checkpoint;
         if ( ! checkpoint ) {
             console.log("restore dialog, but no checkpoint to restore to!");
             return;
         }
         var body = $('<div/>').append(
             $('<p/>').addClass("p-space").text(
                 "Are you sure you want to revert the notebook to " +
                 "the latest checkpoint?"
             ).append(
                 $("<strong/>").text(
                     " This cannot be undone."
                 )
             )
         ).append(
             $('<p/>').addClass("p-space").text("The checkpoint was last updated at:")
         ).append(
             $('<p/>').addClass("p-space").text(
                 Date(checkpoint.last_modified)
             ).css("text-align", "center")
         );
         
         IPython.dialog.modal({
             title : "Revert notebook to checkpoint",
             body : body,
             buttons : {
                 Revert : {
                     class : "btn-danger",
                     click : function () {
                         that.restore_checkpoint(checkpoint.id);
                     }
                 },
                 Cancel : {}
                 }
         });
     }
     
     /**
      * Restore the notebook to a checkpoint state.
      * 
      * @method restore_checkpoint
      * @param {String} checkpoint ID
      */
     Notebook.prototype.restore_checkpoint = function (checkpoint) {
         $([IPython.events]).trigger('notebook_restoring.Notebook', checkpoint);
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebookPath(),
             this.notebook_name,
             'checkpoints',
             checkpoint
         );
         $.post(url).done(
             $.proxy(this.restore_checkpoint_success, this)
         ).fail(
             $.proxy(this.restore_checkpoint_error, this)
         );
     };
     
     /**
      * Success callback for restoring a notebook to a checkpoint.
      * 
      * @method restore_checkpoint_success
      * @param {Object} data (ignored, should be empty)
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.restore_checkpoint_success = function (data, status, xhr) {
         $([IPython.events]).trigger('checkpoint_restored.Notebook');
         this.load_notebook(this.notebook_name, this.notebook_path);
     };
 
     /**
      * Failure callback for restoring a notebook to a checkpoint.
      * 
      * @method restore_checkpoint_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error_msg HTTP error message
      */
     Notebook.prototype.restore_checkpoint_error = function (xhr, status, error_msg) {
         $([IPython.events]).trigger('checkpoint_restore_failed.Notebook');
     };
     
     /**
      * Delete a notebook checkpoint.
      * 
      * @method delete_checkpoint
      * @param {String} checkpoint ID
      */
     Notebook.prototype.delete_checkpoint = function (checkpoint) {
         $([IPython.events]).trigger('notebook_restoring.Notebook', checkpoint);
         var url = utils.url_join_encode(
             this._baseProjectUrl,
             'api/notebooks',
             this.notebookPath(),
             this.notebook_name,
             'checkpoints',
             checkpoint
         );
         $.ajax(url, {
             type: 'DELETE',
             success: $.proxy(this.delete_checkpoint_success, this),
             error: $.proxy(this.delete_notebook_error,this)
         });
     };
     
     /**
      * Success callback for deleting a notebook checkpoint
      * 
      * @method delete_checkpoint_success
      * @param {Object} data (ignored, should be empty)
      * @param {String} status Description of response status
      * @param {jqXHR} xhr jQuery Ajax object
      */
     Notebook.prototype.delete_checkpoint_success = function (data, status, xhr) {
         $([IPython.events]).trigger('checkpoint_deleted.Notebook', data);
         this.load_notebook(this.notebook_name, this.notebook_path);
     };
 
     /**
      * Failure callback for deleting a notebook checkpoint.
      * 
      * @method delete_checkpoint_error
      * @param {jqXHR} xhr jQuery Ajax object
      * @param {String} status Description of response status
      * @param {String} error_msg HTTP error message
      */
     Notebook.prototype.delete_checkpoint_error = function (xhr, status, error_msg) {
         $([IPython.events]).trigger('checkpoint_delete_failed.Notebook');
     };
 
 
     IPython.Notebook = Notebook;
 
 
     return IPython;
 
 }(IPython));

IPython/html/static/notebook/js/notificationwidget.js

@@ -1,82 +1,82 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // Notification widget
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
     var utils = IPython.utils;
 
 
     var NotificationWidget = function (selector) {
         this.selector = selector;
         this.timeout = null;
         this.busy = false;
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.style();
         }
         this.element.button();
         this.element.hide();
         var that = this;
 
     };
 
 
     NotificationWidget.prototype.style = function () {
         this.element.addClass('notification_widget pull-right');
         this.element.addClass('border-box-sizing');
     };
 
     // msg : message to display
     // timeout : time in ms before diseapearing
     //
     // if timeout <= 0
     // click_callback : function called if user click on notification
     // could return false to prevent the notification to be dismissed
     NotificationWidget.prototype.set_message = function (msg, timeout, click_callback) {
         var callback = click_callback || function() {return false;};
         var that = this;
-        this.element.html(msg);
+        this.element.text(msg);
         this.element.fadeIn(100);
         if (this.timeout !== null) {
             clearTimeout(this.timeout);
             this.timeout = null;
         }
         if (timeout !== undefined && timeout >=0) {
             this.timeout = setTimeout(function () {
-                that.element.fadeOut(100, function () {that.element.html('');});
+                that.element.fadeOut(100, function () {that.element.text('');});
                 that.timeout = null;
             }, timeout);
         } else {
             this.element.click(function() {
                 if( callback() != false ) {
-                    that.element.fadeOut(100, function () {that.element.html('');});
+                    that.element.fadeOut(100, function () {that.element.text('');});
                     that.element.unbind('click');
                 }
                 if (that.timeout !== undefined) {
                     that.timeout = undefined;
                     clearTimeout(that.timeout);
                 }
             });
         }
     };
 
 
     NotificationWidget.prototype.get_message = function () {
         return this.element.html();
     };
 
 
     IPython.NotificationWidget = NotificationWidget;
 
     return IPython;
 
 }(IPython));
 

IPython/html/static/notebook/js/outputarea.js

@@ -1,819 +1,819 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008 The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // OutputArea
 //============================================================================
 
 /**
  * @module IPython
  * @namespace IPython
  * @submodule OutputArea
  */
 var IPython = (function (IPython) {
     "use strict";
 
     var utils = IPython.utils;
 
     /**
      * @class OutputArea
      *
      * @constructor
      */
 
     var OutputArea = function (selector, prompt_area) {
         this.selector = selector;
         this.wrapper = $(selector);
         this.outputs = [];
         this.collapsed = false;
         this.scrolled = false;
         this.clear_queued = null;
         if (prompt_area === undefined) {
             this.prompt_area = true;
         } else {
             this.prompt_area = prompt_area;
         }
         this.create_elements();
         this.style();
         this.bind_events();
     };
     
     OutputArea.prototype.create_elements = function () {
         this.element = $("<div/>");
         this.collapse_button = $("<div/>");
         this.prompt_overlay = $("<div/>");
         this.wrapper.append(this.prompt_overlay);
         this.wrapper.append(this.element);
         this.wrapper.append(this.collapse_button);
     };
 
 
     OutputArea.prototype.style = function () {
         this.collapse_button.hide();
         this.prompt_overlay.hide();
         
         this.wrapper.addClass('output_wrapper');
         this.element.addClass('output');
         
         this.collapse_button.addClass("btn output_collapsed");
         this.collapse_button.attr('title', 'click to expand output');
-        this.collapse_button.html('. . .');
+        this.collapse_button.text('. . .');
         
         this.prompt_overlay.addClass('out_prompt_overlay prompt');
         this.prompt_overlay.attr('title', 'click to expand output; double click to hide output');
         
         this.collapse();
     };
 
     /**
      * Should the OutputArea scroll?
      * Returns whether the height (in lines) exceeds a threshold.
      *
      * @private
      * @method _should_scroll
      * @param [lines=100]{Integer}
      * @return {Bool}
      *
      */
     OutputArea.prototype._should_scroll = function (lines) {
         if (lines <=0 ){ return }
         if (!lines) {
             lines = 100;
         }
         // line-height from http://stackoverflow.com/questions/1185151
         var fontSize = this.element.css('font-size');
         var lineHeight = Math.floor(parseInt(fontSize.replace('px','')) * 1.5);
         
         return (this.element.height() > lines * lineHeight);
     };
 
 
     OutputArea.prototype.bind_events = function () {
         var that = this;
         this.prompt_overlay.dblclick(function () { that.toggle_output(); });
         this.prompt_overlay.click(function () { that.toggle_scroll(); });
 
         this.element.resize(function () {
             // FIXME: Firefox on Linux misbehaves, so automatic scrolling is disabled
             if ( IPython.utils.browser[0] === "Firefox" ) {
                 return;
             }
             // maybe scroll output,
             // if it's grown large enough and hasn't already been scrolled.
             if ( !that.scrolled && that._should_scroll(OutputArea.auto_scroll_threshold)) {
                 that.scroll_area();
             }
         });
         this.collapse_button.click(function () {
             that.expand();
         });
     };
 
 
     OutputArea.prototype.collapse = function () {
         if (!this.collapsed) {
             this.element.hide();
             this.prompt_overlay.hide();
             if (this.element.html()){
                 this.collapse_button.show();
             }
             this.collapsed = true;
         }
     };
 
 
     OutputArea.prototype.expand = function () {
         if (this.collapsed) {
             this.collapse_button.hide();
             this.element.show();
             this.prompt_overlay.show();
             this.collapsed = false;
         }
     };
 
 
     OutputArea.prototype.toggle_output = function () {
         if (this.collapsed) {
             this.expand();
         } else {
             this.collapse();
         }
     };
 
 
     OutputArea.prototype.scroll_area = function () {
         this.element.addClass('output_scroll');
         this.prompt_overlay.attr('title', 'click to unscroll output; double click to hide');
         this.scrolled = true;
     };
 
 
     OutputArea.prototype.unscroll_area = function () {
         this.element.removeClass('output_scroll');
         this.prompt_overlay.attr('title', 'click to scroll output; double click to hide');
         this.scrolled = false;
     };
 
     /**
      * Threshold to trigger autoscroll when the OutputArea is resized,
      * typically when new outputs are added.
      *
      * Behavior is undefined if autoscroll is lower than minimum_scroll_threshold,
      * unless it is < 0, in which case autoscroll will never be triggered
      *
      * @property auto_scroll_threshold
      * @type Number
      * @default 100
      *
      **/
     OutputArea.auto_scroll_threshold = 100;
 
 
     /**
      * Lower limit (in lines) for OutputArea to be made scrollable. OutputAreas
      * shorter than this are never scrolled.
      *
      * @property minimum_scroll_threshold
      * @type Number
      * @default 20
      *
      **/
     OutputArea.minimum_scroll_threshold = 20;
 
 
     /**
      *
      * Scroll OutputArea if height supperior than a threshold (in lines).
      *
      * Threshold is a maximum number of lines. If unspecified, defaults to
      * OutputArea.minimum_scroll_threshold.
      *
      * Negative threshold will prevent the OutputArea from ever scrolling.
      *
      * @method scroll_if_long
      *
      * @param [lines=20]{Number} Default to 20 if not set,
      * behavior undefined for value of `0`.
      *
      **/
     OutputArea.prototype.scroll_if_long = function (lines) {
         var n = lines | OutputArea.minimum_scroll_threshold;
         if(n <= 0){
             return
         }
 
         if (this._should_scroll(n)) {
             // only allow scrolling long-enough output
             this.scroll_area();
         }
     };
 
 
     OutputArea.prototype.toggle_scroll = function () {
         if (this.scrolled) {
             this.unscroll_area();
         } else {
             // only allow scrolling long-enough output
             this.scroll_if_long();
         }
     };
 
 
     // typeset with MathJax if MathJax is available
     OutputArea.prototype.typeset = function () {
         if (window.MathJax){
             MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
         }
     };
 
 
     OutputArea.prototype.handle_output = function (msg) {
         var json = {};
         var msg_type = json.output_type = msg.header.msg_type;
         var content = msg.content;
         if (msg_type === "stream") {
             json.text = content.data;
             json.stream = content.name;
         } else if (msg_type === "display_data") {
             json = content.data;
             json.output_type = msg_type;
             json.metadata = content.metadata;
         } else if (msg_type === "pyout") {
             json = content.data;
             json.output_type = msg_type;
             json.metadata = content.metadata;
             json.prompt_number = content.execution_count;
         } else if (msg_type === "pyerr") {
             json.ename = content.ename;
             json.evalue = content.evalue;
             json.traceback = content.traceback;
         }
         this.append_output(json);
     };
 
     OutputArea.mime_map = {
         "text/plain" : "text",
         "text/html" : "html",
         "image/svg+xml" : "svg",
         "image/png" : "png",
         "image/jpeg" : "jpeg",
         "text/latex" : "latex",
         "application/json" : "json",
         "application/javascript" : "javascript",
     };
     
     OutputArea.mime_map_r = {
         "text" : "text/plain",
         "html" : "text/html",
         "svg" : "image/svg+xml",
         "png" : "image/png",
         "jpeg" : "image/jpeg",
         "latex" : "text/latex",
         "json" : "application/json",
         "javascript" : "application/javascript",
     };
     
     OutputArea.prototype.rename_keys = function (data, key_map) {
         var remapped = {};
         for (var key in data) {
             var new_key = key_map[key] || key;
             remapped[new_key] = data[key];
         }
         return remapped;
     };
 
 
     OutputArea.output_types = [
         'application/javascript',
         'text/html',
         'text/latex',
         'image/svg+xml',
         'image/png',
         'image/jpeg',
         'text/plain'
     ];
 
     OutputArea.prototype.validate_output = function (json) {
         // scrub invalid outputs
         // TODO: right now everything is a string, but JSON really shouldn't be.
         // nbformat 4 will fix that.
         $.map(OutputArea.output_types, function(key){
             if (json[key] !== undefined && typeof json[key] !== 'string') {
                 console.log("Invalid type for " + key, json[key]);
                 delete json[key];
             }
         });
         return json;
     };
 
     OutputArea.prototype.append_output = function (json) {
         this.expand();
         // Clear the output if clear is queued.
         var needs_height_reset = false;
         if (this.clear_queued) {
             this.clear_output(false);
             needs_height_reset = true;
         }
         
         // validate output data types
         json = this.validate_output(json);
 
         if (json.output_type === 'pyout') {
             this.append_pyout(json);
         } else if (json.output_type === 'pyerr') {
             this.append_pyerr(json);
         } else if (json.output_type === 'display_data') {
             this.append_display_data(json);
         } else if (json.output_type === 'stream') {
             this.append_stream(json);
         }
         this.outputs.push(json);
         
         // Only reset the height to automatic if the height is currently
         // fixed (done by wait=True flag on clear_output).
         if (needs_height_reset) {
             this.element.height('');    
         }
 
         var that = this;
         setTimeout(function(){that.element.trigger('resize');}, 100);
     };
 
 
     OutputArea.prototype.create_output_area = function () {
         var oa = $("<div/>").addClass("output_area");
         if (this.prompt_area) {
             oa.append($('<div/>').addClass('prompt'));
         }
         return oa;
     };
 
 
     function _get_metadata_key(metadata, key, mime) {
         var mime_md = metadata[mime];
         // mime-specific higher priority
         if (mime_md && mime_md[key] !== undefined) {
             return mime_md[key];
         }
         // fallback on global
         return metadata[key];
     }
 
     OutputArea.prototype.create_output_subarea = function(md, classes, mime) {
         var subarea = $('<div/>').addClass('output_subarea').addClass(classes);
         if (_get_metadata_key(md, 'isolated', mime)) {
             // Create an iframe to isolate the subarea from the rest of the
             // document
             var iframe = $('<iframe/>').addClass('box-flex1');
             iframe.css({'height':1, 'width':'100%', 'display':'block'});
             iframe.attr('frameborder', 0);
             iframe.attr('scrolling', 'auto');
 
             // Once the iframe is loaded, the subarea is dynamically inserted
             iframe.on('load', function() {
                 // Workaround needed by Firefox, to properly render svg inside
                 // iframes, see http://stackoverflow.com/questions/10177190/
                 // svg-dynamically-added-to-iframe-does-not-render-correctly
                 this.contentDocument.open();
 
                 // Insert the subarea into the iframe
                 // We must directly write the html. When using Jquery's append
                 // method, javascript is evaluated in the parent document and
                 // not in the iframe document.
                 this.contentDocument.write(subarea.html());
 
                 this.contentDocument.close();
 
                 var body = this.contentDocument.body;
                 // Adjust the iframe height automatically
                 iframe.height(body.scrollHeight + 'px');
             });
 
             // Elements should be appended to the inner subarea and not to the
             // iframe
             iframe.append = function(that) {
                 subarea.append(that);
             };
 
             return iframe;
         } else {
             return subarea;
         }
     }
 
 
     OutputArea.prototype._append_javascript_error = function (err, element) {
         // display a message when a javascript error occurs in display output
         var msg = "Javascript error adding output!"
         if ( element === undefined ) return;
         element.append(
             $('<div/>').html(msg + "<br/>" +
                 err.toString() +
                 '<br/>See your browser Javascript console for more details.'
             ).addClass('js-error')
         );
     };
     
     OutputArea.prototype._safe_append = function (toinsert) {
         // safely append an item to the document
         // this is an object created by user code,
         // and may have errors, which should not be raised
         // under any circumstances.
         try {
             this.element.append(toinsert);
         } catch(err) {
             console.log(err);
             // Create an actual output_area and output_subarea, which creates
             // the prompt area and the proper indentation.
             var toinsert = this.create_output_area();
             var subarea = $('<div/>').addClass('output_subarea');
             toinsert.append(subarea);
             this._append_javascript_error(err, subarea);
             this.element.append(toinsert);
         }
     };
 
 
     OutputArea.prototype.append_pyout = function (json) {
         var n = json.prompt_number || ' ';
         var toinsert = this.create_output_area();
         if (this.prompt_area) {
-            toinsert.find('div.prompt').addClass('output_prompt').html('Out[' + n + ']:');
+            toinsert.find('div.prompt').addClass('output_prompt').text('Out[' + n + ']:');
         }
         this.append_mime_type(json, toinsert);
         this._safe_append(toinsert);
         // If we just output latex, typeset it.
         if ((json['text/latex'] !== undefined) || (json['text/html'] !== undefined)) {
             this.typeset();
         }
     };
 
 
     OutputArea.prototype.append_pyerr = function (json) {
         var tb = json.traceback;
         if (tb !== undefined && tb.length > 0) {
             var s = '';
             var len = tb.length;
             for (var i=0; i<len; i++) {
                 s = s + tb[i] + '\n';
             }
             s = s + '\n';
             var toinsert = this.create_output_area();
             this.append_text(s, {}, toinsert);
             this._safe_append(toinsert);
         }
     };
 
 
     OutputArea.prototype.append_stream = function (json) {
         // temporary fix: if stream undefined (json file written prior to this patch),
         // default to most likely stdout:
         if (json.stream == undefined){
             json.stream = 'stdout';
         }
         var text = json.text;
         var subclass = "output_"+json.stream;
         if (this.outputs.length > 0){
             // have at least one output to consider
             var last = this.outputs[this.outputs.length-1];
             if (last.output_type == 'stream' && json.stream == last.stream){
                 // latest output was in the same stream,
                 // so append directly into its pre tag
                 // escape ANSI & HTML specials:
                 var pre = this.element.find('div.'+subclass).last().find('pre');
                 var html = utils.fixCarriageReturn(
                     pre.html() + utils.fixConsole(text));
                 pre.html(html);
                 return;
             }
         }
 
         if (!text.replace("\r", "")) {
             // text is nothing (empty string, \r, etc.)
             // so don't append any elements, which might add undesirable space
             return;
         }
 
         // If we got here, attach a new div
         var toinsert = this.create_output_area();
         this.append_text(text, {}, toinsert, "output_stream "+subclass);
         this._safe_append(toinsert);
     };
 
 
     OutputArea.prototype.append_display_data = function (json) {
         var toinsert = this.create_output_area();
         if (this.append_mime_type(json, toinsert)) {
             this._safe_append(toinsert);
             // If we just output latex, typeset it.
             if ((json['text/latex'] !== undefined) || (json['text/html'] !== undefined)) {
                 this.typeset();
             }
         }
     };
 
     OutputArea.display_order = [
         'application/javascript',
         'text/html',
         'text/latex',
         'image/svg+xml',
         'image/png',
         'image/jpeg',
         'text/plain'
     ];
 
     OutputArea.prototype.append_mime_type = function (json, element) {
 
         for (var type_i in OutputArea.display_order) {
             var type = OutputArea.display_order[type_i];
             var append = OutputArea.append_map[type];
             if ((json[type] !== undefined) && append) {
                 var md = json.metadata || {};
                 append.apply(this, [json[type], md, element]);
                 return true;
             }
         }
         return false;
     };
 
 
     OutputArea.prototype.append_html = function (html, md, element) {
         var type = 'text/html';
         var toinsert = this.create_output_subarea(md, "output_html rendered_html", type);
         IPython.keyboard_manager.register_events(toinsert);
         toinsert.append(html);
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_javascript = function (js, md, container) {
         // We just eval the JS code, element appears in the local scope.
         var type = 'application/javascript';
         var element = this.create_output_subarea(md, "output_javascript", type);
         IPython.keyboard_manager.register_events(element);
         container.append(element);
         try {
             eval(js);
         } catch(err) {
             console.log(err);
             this._append_javascript_error(err, element);
         }
     };
 
 
     OutputArea.prototype.append_text = function (data, md, element, extra_class) {
         var type = 'text/plain';
         var toinsert = this.create_output_subarea(md, "output_text", type);
         // escape ANSI & HTML specials in plaintext:
         data = utils.fixConsole(data);
         data = utils.fixCarriageReturn(data);
         data = utils.autoLinkUrls(data);
         if (extra_class){
             toinsert.addClass(extra_class);
         }
         toinsert.append($("<pre/>").html(data));
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_svg = function (svg, md, element) {
         var type = 'image/svg+xml';
         var toinsert = this.create_output_subarea(md, "output_svg", type);
         toinsert.append(svg);
         element.append(toinsert);
     };
 
 
     OutputArea.prototype._dblclick_to_reset_size = function (img) {
         // schedule wrapping image in resizable after a delay,
         // so we don't end up calling resize on a zero-size object
         var that = this;
         setTimeout(function () {
             var h0 = img.height();
             var w0 = img.width();
             if (!(h0 && w0)) {
                 // zero size, schedule another timeout
                 that._dblclick_to_reset_size(img);
                 return;
             }
             img.resizable({
                 aspectRatio: true,
                 autoHide: true
             });
             img.dblclick(function () {
                 // resize wrapper & image together for some reason:
                 img.parent().height(h0);
                 img.height(h0);
                 img.parent().width(w0);
                 img.width(w0);
             });
         }, 250);
     };
 
 
     OutputArea.prototype.append_png = function (png, md, element) {
         var type = 'image/png';
         var toinsert = this.create_output_subarea(md, "output_png", type);
         var img = $("<img/>");
         img[0].setAttribute('src','data:image/png;base64,'+png);
         if (md['height']) {
             img[0].setAttribute('height', md['height']);
         }
         if (md['width']) {
             img[0].setAttribute('width', md['width']);
         }
         this._dblclick_to_reset_size(img);
         toinsert.append(img);
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_jpeg = function (jpeg, md, element) {
         var type = 'image/jpeg';
         var toinsert = this.create_output_subarea(md, "output_jpeg", type);
         var img = $("<img/>").attr('src','data:image/jpeg;base64,'+jpeg);
         if (md['height']) {
             img.attr('height', md['height']);
         }
         if (md['width']) {
             img.attr('width', md['width']);
         }
         this._dblclick_to_reset_size(img);
         toinsert.append(img);
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_latex = function (latex, md, element) {
         // This method cannot do the typesetting because the latex first has to
         // be on the page.
         var type = 'text/latex';
         var toinsert = this.create_output_subarea(md, "output_latex", type);
         toinsert.append(latex);
         element.append(toinsert);
     };
 
     OutputArea.append_map = {
         "text/plain" : OutputArea.prototype.append_text,
         "text/html" : OutputArea.prototype.append_html,
         "image/svg+xml" : OutputArea.prototype.append_svg,
         "image/png" : OutputArea.prototype.append_png,
         "image/jpeg" : OutputArea.prototype.append_jpeg,
         "text/latex" : OutputArea.prototype.append_latex,
         "application/json" : OutputArea.prototype.append_json,
         "application/javascript" : OutputArea.prototype.append_javascript,
     };
 
     OutputArea.prototype.append_raw_input = function (msg) {
         var that = this;
         this.expand();
         var content = msg.content;
         var area = this.create_output_area();
         
         // disable any other raw_inputs, if they are left around
         $("div.output_subarea.raw_input").remove();
         
         area.append(
             $("<div/>")
             .addClass("box-flex1 output_subarea raw_input")
             .append(
                 $("<span/>")
                 .addClass("input_prompt")
                 .text(content.prompt)
             )
             .append(
                 $("<input/>")
                 .addClass("raw_input")
                 .attr('type', 'text')
                 .attr("size", 47)
                 .keydown(function (event, ui) {
                     // make sure we submit on enter,
                     // and don't re-execute the *cell* on shift-enter
                     if (event.which === utils.keycodes.ENTER) {
                         that._submit_raw_input();
                         return false;
                     }
                 })
             )
         );
         
         this.element.append(area);
         var raw_input = area.find('input.raw_input');
         // Register events that enable/disable the keyboard manager while raw
         // input is focused.
         IPython.keyboard_manager.register_events(raw_input);
         // Note, the following line used to read raw_input.focus().focus().
         // This seemed to be needed otherwise only the cell would be focused.
         // But with the modal UI, this seems to work fine with one call to focus().
         raw_input.focus();
     }
 
     OutputArea.prototype._submit_raw_input = function (evt) {
         var container = this.element.find("div.raw_input");
         var theprompt = container.find("span.input_prompt");
         var theinput = container.find("input.raw_input");
         var value = theinput.val();
         var content = {
             output_type : 'stream',
             name : 'stdout',
             text : theprompt.text() + value + '\n'
         }
         // remove form container
         container.parent().remove();
         // replace with plaintext version in stdout
         this.append_output(content, false);
         $([IPython.events]).trigger('send_input_reply.Kernel', value);
     }
 
 
     OutputArea.prototype.handle_clear_output = function (msg) {
         this.clear_output(msg.content.wait);
     };
 
 
     OutputArea.prototype.clear_output = function(wait) {
         if (wait) {
 
             // If a clear is queued, clear before adding another to the queue.
             if (this.clear_queued) {
                 this.clear_output(false);
             };
 
             this.clear_queued = true;
         } else {
 
             // Fix the output div's height if the clear_output is waiting for
             // new output (it is being used in an animation).
             if (this.clear_queued) {
                 var height = this.element.height();
                 this.element.height(height);
                 this.clear_queued = false;
             }
             
             // clear all, no need for logic
             this.element.html("");
             this.outputs = [];
             this.unscroll_area();
             return;
         };
     };
 
 
     // JSON serialization
 
     OutputArea.prototype.fromJSON = function (outputs) {
         var len = outputs.length;
         var data;
 
         // We don't want to display javascript on load, so remove it from the
         // display order for the duration of this function call, but be sure to
         // put it back in there so incoming messages that contain javascript
         // representations get displayed
         var js_index = OutputArea.display_order.indexOf('application/javascript');
         OutputArea.display_order.splice(js_index, 1);
 
         for (var i=0; i<len; i++) {
             data = outputs[i];
             var msg_type = data.output_type;
             if (msg_type === "display_data" || msg_type === "pyout") {
                 // convert short keys to mime keys
                 // TODO: remove mapping of short keys when we update to nbformat 4
                  data = this.rename_keys(data, OutputArea.mime_map_r);
                  data.metadata = this.rename_keys(data.metadata, OutputArea.mime_map_r);
             }
             
             this.append_output(data);
         }
 
         // reinsert javascript into display order, see note above
         OutputArea.display_order.splice(js_index, 0, 'application/javascript');
     };
 
 
     OutputArea.prototype.toJSON = function () {
         var outputs = [];
         var len = this.outputs.length;
         var data;
         for (var i=0; i<len; i++) {
             data = this.outputs[i];
             var msg_type = data.output_type;
             if (msg_type === "display_data" || msg_type === "pyout") {
                   // convert mime keys to short keys
                  data = this.rename_keys(data, OutputArea.mime_map);
                  data.metadata = this.rename_keys(data.metadata, OutputArea.mime_map);
             }
             outputs[i] = data;
         }
         return outputs;
     };
 
 
     IPython.OutputArea = OutputArea;
 
     return IPython;
 
 }(IPython));

IPython/html/static/notebook/js/quickhelp.js

@@ -1,133 +1,133 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // QuickHelp button
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
 
     var QuickHelp = function (selector) {
     };
 
     QuickHelp.prototype.show_keyboard_shortcuts = function () {
         // toggles display of keyboard shortcut dialog
         var that = this;
         if ( this.shortcut_dialog ){
             // if dialog is already shown, close it
             $(this.shortcut_dialog).modal("toggle");
             return;
         }
         var command_shortcuts = IPython.keyboard_manager.command_shortcuts.help();
         var edit_shortcuts = IPython.keyboard_manager.edit_shortcuts.help();
         var help, shortcut;
         var i, half, n;
         var element = $('<div/>');
 
         // The documentation
         var doc = $('<div/>').addClass('alert');
         doc.append(
-            $('<button/>').addClass('close').attr('data-dismiss','alert').html('&times')
+            $('<button/>').addClass('close').attr('data-dismiss','alert').html('&times;')
         ).append(
             'The IPython Notebook has two different keyboard input modes. <b>Edit mode</b> '+
             'allow you the type code/text into a cell and is indicated by a green cell '+
             'border. <b>Command mode</b> binds the keyboard to notebook level actions '+
             'and is indicated by a grey cell border.'
         )
         element.append(doc);
 
         // Command mode
         var cmd_div = this.build_command_help();
         element.append(cmd_div);
 
         // Edit mode
         var edit_div = this.build_edit_help();
         element.append(edit_div);
 
         this.shortcut_dialog = IPython.dialog.modal({
             title : "Keyboard shortcuts",
             body : element,
             destroy : false,
             buttons : {
                 Close : {}
             }
         });
     };
 
     QuickHelp.prototype.build_command_help = function () {
         var command_shortcuts = IPython.keyboard_manager.command_shortcuts.help();
         var help, shortcut;
         var i, half, n;
 
         // Command mode
         var cmd_div = $('<div/>').append($('<h4>Command Mode (press ESC to enable)</h4>'));
         var cmd_sub_div = $('<div/>').addClass('hbox');
         var cmd_col1 = $('<div/>').addClass('box-flex0');
         var cmd_col2 = $('<div/>').addClass('box-flex0');
         n = command_shortcuts.length;
         half = ~~(n/2);  // Truncate :)
         for (i=0; i<half; i++) {
             help = command_shortcuts[i]['help'];
             shortcut = command_shortcuts[i]['shortcut'];
             cmd_col1.append($('<div>').addClass('quickhelp').
-                append($('<span/>').addClass('shortcut_key').html(shortcut)).
-                append($('<span/>').addClass('shortcut_descr').html(' : ' + help))
+                append($('<span/>').addClass('shortcut_key').text(shortcut)).
+                append($('<span/>').addClass('shortcut_descr').text(' : ' + help))
             );
         };
         for (i=half; i<n; i++) {
             help = command_shortcuts[i]['help'];
             shortcut = command_shortcuts[i]['shortcut'];
             cmd_col2.append($('<div>').addClass('quickhelp').
-                append($('<span/>').addClass('shortcut_key').html(shortcut)).
-                append($('<span/>').addClass('shortcut_descr').html(' : ' + help))
+                append($('<span/>').addClass('shortcut_key').text(shortcut)).
+                append($('<span/>').addClass('shortcut_descr').text(' : ' + help))
             );
         };
         cmd_sub_div.append(cmd_col1).append(cmd_col2);
         cmd_div.append(cmd_sub_div);
         return cmd_div;
     }
 
     QuickHelp.prototype.build_edit_help = function () {
         var edit_shortcuts = IPython.keyboard_manager.edit_shortcuts.help();
         var help, shortcut;
         var i, half, n;
 
         // Edit mode
         var edit_div = $('<div/>').append($('<h4>Edit Mode (press ENTER to enable)</h4>'));
         var edit_sub_div = $('<div/>').addClass('hbox');
         var edit_col1 = $('<div/>').addClass('box-flex0');
         var edit_col2 = $('<div/>').addClass('box-flex0');
         n = edit_shortcuts.length;
         half = ~~(n/2);  // Truncate :)
         for (i=0; i<half; i++) {
             help = edit_shortcuts[i]['help'];
             shortcut = edit_shortcuts[i]['shortcut'];
             edit_col1.append($('<div>').addClass('quickhelp').
-                append($('<span/>').addClass('shortcut_key').html(shortcut)).
-                append($('<span/>').addClass('shortcut_descr').html(' : ' + help))
+                append($('<span/>').addClass('shortcut_key').text(shortcut)).
+                append($('<span/>').addClass('shortcut_descr').text(' : ' + help))
             );
         };
         for (i=half; i<n; i++) {
             help = edit_shortcuts[i]['help'];
             shortcut = edit_shortcuts[i]['shortcut'];
             edit_col2.append($('<div>').addClass('quickhelp').
-                append($('<span/>').addClass('shortcut_key').html(shortcut)).
-                append($('<span/>').addClass('shortcut_descr').html(' : ' + help))
+                append($('<span/>').addClass('shortcut_key').text(shortcut)).
+                append($('<span/>').addClass('shortcut_descr').text(' : ' + help))
             );
         };
         edit_sub_div.append(edit_col1).append(edit_col2);
         edit_div.append(edit_sub_div);
         return edit_div;
     }
 
     // Set module variables
     IPython.QuickHelp = QuickHelp;
 
     return IPython;
 
 }(IPython));

IPython/html/static/notebook/js/savewidget.js

@@ -1,173 +1,173 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // SaveWidget
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
 
     var utils = IPython.utils;
 
     var SaveWidget = function (selector) {
         this.selector = selector;
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.style();
             this.bind_events();
         }
     };
 
 
     SaveWidget.prototype.style = function () {
     };
 
 
     SaveWidget.prototype.bind_events = function () {
         var that = this;
         this.element.find('span#notebook_name').click(function () {
             that.rename_notebook();
         });
         this.element.find('span#notebook_name').hover(function () {
             $(this).addClass("ui-state-hover");
         }, function () {
             $(this).removeClass("ui-state-hover");
         });
         $([IPython.events]).on('notebook_loaded.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
         });
         $([IPython.events]).on('notebook_saved.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
         });
         $([IPython.events]).on('notebook_renamed.Notebook', function () {
             that.update_notebook_name();
             that.update_document_title();
             that.update_address_bar();
         });
         $([IPython.events]).on('notebook_save_failed.Notebook', function () {
             that.set_save_status('Autosave Failed!');
         });
         $([IPython.events]).on('checkpoints_listed.Notebook', function (event, data) {
             that.set_last_checkpoint(data[0]);
         });
 
         $([IPython.events]).on('checkpoint_created.Notebook', function (event, data) {
             that.set_last_checkpoint(data);
         });
         $([IPython.events]).on('set_dirty.Notebook', function (event, data) {
             that.set_autosaved(data.value);
         });
     };
 
 
     SaveWidget.prototype.rename_notebook = function () {
         var that = this;
         var dialog = $('<div/>').append(
             $("<p/>").addClass("rename-message")
-                .html('Enter a new notebook name:')
+                .text('Enter a new notebook name:')
         ).append(
             $("<br/>")
         ).append(
             $('<input/>').attr('type','text').attr('size','25')
             .val(IPython.notebook.get_notebook_name())
         );
         IPython.dialog.modal({
             title: "Rename Notebook",
             body: dialog,
             buttons : {
                 "Cancel": {},
                 "OK": {
                     class: "btn-primary",
                     click: function () {
                     var new_name = $(this).find('input').val();
                     if (!IPython.notebook.test_notebook_name(new_name)) {
-                        $(this).find('.rename-message').html(
+                        $(this).find('.rename-message').text(
                             "Invalid notebook name. Notebook names must "+
                             "have 1 or more characters and can contain any characters " +
                             "except :/\\. Please enter a new notebook name:"
                         );
                         return false;
                     } else {
                         IPython.notebook.rename(new_name);
                     }
                 }}
                 },
             open : function (event, ui) {
                 var that = $(this);
                 // Upon ENTER, click the OK button.
                 that.find('input[type="text"]').keydown(function (event, ui) {
                     if (event.which === utils.keycodes.ENTER) {
                         that.find('.btn-primary').first().click();
                         return false;
                     }
                 });
                 that.find('input[type="text"]').focus().select();
             }
         });
     }
 
 
     SaveWidget.prototype.update_notebook_name = function () {
         var nbname = IPython.notebook.get_notebook_name();
-        this.element.find('span#notebook_name').html(nbname);
+        this.element.find('span#notebook_name').text(nbname);
     };
 
 
     SaveWidget.prototype.update_document_title = function () {
         var nbname = IPython.notebook.get_notebook_name();
         document.title = nbname;
     };
     
     SaveWidget.prototype.update_address_bar = function(){
         var nbname = IPython.notebook.notebook_name;
         var path = IPython.notebook.notebookPath();
         var state = {path : utils.url_join_encode(path, nbname)};
         window.history.replaceState(state, "", utils.url_join_encode(
             "/notebooks",
             path,
             nbname)
         );
     }
 
 
     SaveWidget.prototype.set_save_status = function (msg) {
-        this.element.find('span#autosave_status').html(msg);
+        this.element.find('span#autosave_status').text(msg);
     }
 
     SaveWidget.prototype.set_checkpoint_status = function (msg) {
-        this.element.find('span#checkpoint_status').html(msg);
+        this.element.find('span#checkpoint_status').text(msg);
     }
 
     SaveWidget.prototype.set_last_checkpoint = function (checkpoint) {
         if (!checkpoint) {
             this.set_checkpoint_status("");
             return;
         }
         var d = new Date(checkpoint.last_modified);
         this.set_checkpoint_status(
             "Last Checkpoint: " + d.format('mmm dd HH:MM')
         );
     }
 
     SaveWidget.prototype.set_autosaved = function (dirty) {
         if (dirty) {
             this.set_save_status("(unsaved changes)");
         } else {
             this.set_save_status("(autosaved)");
         }
     };
 
 
     IPython.SaveWidget = SaveWidget;
 
     return IPython;
 
 }(IPython));
 

IPython/html/static/tree/js/clusterlist.js

@@ -1,199 +1,199 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // NotebookList
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
     
     var utils = IPython.utils;
 
     var ClusterList = function (selector) {
         this.selector = selector;
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.style();
             this.bind_events();
         }
     };
 
     ClusterList.prototype.baseProjectUrl = function(){
         return this._baseProjectUrl || $('body').data('baseProjectUrl');
     };
 
     ClusterList.prototype.style = function () {
         $('#cluster_list').addClass('list_container');
         $('#cluster_toolbar').addClass('list_toolbar');
         $('#cluster_list_info').addClass('toolbar_info');
         $('#cluster_buttons').addClass('toolbar_buttons');
     };
 
 
     ClusterList.prototype.bind_events = function () {
         var that = this;
         $('#refresh_cluster_list').click(function () {
             that.load_list();
         });
     };
 
 
     ClusterList.prototype.load_list = function () {
         var settings = {
             processData : false,
             cache : false,
             type : "GET",
             dataType : "json",
             success : $.proxy(this.load_list_success, this)
         };
         var url = utils.url_join_encode(this.baseProjectUrl(), 'clusters');
         $.ajax(url, settings);
     };
 
 
     ClusterList.prototype.clear_list = function () {
         this.element.children('.list_item').remove();
     };
 
     ClusterList.prototype.load_list_success = function (data, status, xhr) {
         this.clear_list();
         var len = data.length;
         for (var i=0; i<len; i++) {
             var element = $('<div/>');
             var item = new ClusterItem(element);
             item.update_state(data[i]);
             element.data('item', item);
             this.element.append(element);
         }
     };
 
 
     var ClusterItem = function (element) {
         this.element = $(element);
         this.data = null;
         this.style();
     };
 
     ClusterItem.prototype.baseProjectUrl = function(){
         return this._baseProjectUrl || $('body').data('baseProjectUrl');
     };
 
 
     ClusterItem.prototype.style = function () {
         this.element.addClass('list_item').addClass("row-fluid");
     };
 
     ClusterItem.prototype.update_state = function (data) {
         this.data = data;
         if (data.status === 'running') {
             this.state_running();
         } else if (data.status === 'stopped') {
             this.state_stopped();
         }
     };
 
 
     ClusterItem.prototype.state_stopped = function () {
         var that = this;
         var profile_col = $('<span/>').addClass('profile_col span4').text(this.data.profile);
-        var status_col = $('<span/>').addClass('status_col span3').html('stopped');
+        var status_col = $('<span/>').addClass('status_col span3').text('stopped');
         var engines_col = $('<span/>').addClass('engine_col span3');
         var input = $('<input/>').attr('type','number')
                 .attr('min',1)
                 .attr('size',3)
                 .addClass('engine_num_input');
         engines_col.append(input);
         var start_button = $('<button/>').addClass("btn btn-mini").text("Start");
         var action_col = $('<span/>').addClass('action_col span2').append(
             $("<span/>").addClass("item_buttons btn-group").append(
                 start_button
             )
         );
         this.element.empty()
             .append(profile_col)
             .append(status_col)
             .append(engines_col)
             .append(action_col);
         start_button.click(function (e) {
             var n = that.element.find('.engine_num_input').val();
             if (!/^\d+$/.test(n) && n.length>0) {
-                status_col.html('invalid engine #');
+                status_col.text('invalid engine #');
             } else {
                 var settings = {
                     cache : false,
                     data : {n:n},
                     type : "POST",
                     dataType : "json",
                     success : function (data, status, xhr) {
                         that.update_state(data);
                     },
                     error : function (data, status, xhr) {
-                        status_col.html("error starting cluster");
+                        status_col.text("error starting cluster");
                     }
                 };
-                status_col.html('starting');
+                status_col.text('starting');
                 var url = utils.url_join_encode(
                     that.baseProjectUrl(),
                     'clusters',
                     that.data.profile,
                     'start'
                 );
                 $.ajax(url, settings);
             }
         });
     };
 
 
     ClusterItem.prototype.state_running = function () {
         var that = this;
         var profile_col = $('<span/>').addClass('profile_col span4').text(this.data.profile);
-        var status_col = $('<span/>').addClass('status_col span3').html('running');
-        var engines_col = $('<span/>').addClass('engines_col span3').html(this.data.n);
+        var status_col = $('<span/>').addClass('status_col span3').text('running');
+        var engines_col = $('<span/>').addClass('engines_col span3').text(this.data.n);
         var stop_button = $('<button/>').addClass("btn btn-mini").text("Stop");
         var action_col = $('<span/>').addClass('action_col span2').append(
             $("<span/>").addClass("item_buttons btn-group").append(
                 stop_button
             )
         );
         this.element.empty()
             .append(profile_col)
             .append(status_col)
             .append(engines_col)
             .append(action_col);
         stop_button.click(function (e) {
             var settings = {
                 cache : false,
                 type : "POST",
                 dataType : "json",
                 success : function (data, status, xhr) {
                     that.update_state(data);
                 },
                 error : function (data, status, xhr) {
                     console.log('error',data);
-                    status_col.html("error stopping cluster");
+                    status_col.text("error stopping cluster");
                 }
             };
-            status_col.html('stopping');
+            status_col.text('stopping');
             var url = utils.url_join_encode(
                 that.baseProjectUrl(),
                 'clusters',
                 that.data.profile,
                 'stop'
             );
             $.ajax(url, settings);
         });
     };
 
 
     IPython.ClusterList = ClusterList;
     IPython.ClusterItem = ClusterItem;
 
     return IPython;
 
 }(IPython));
 

IPython/html/static/tree/js/notebooklist.js

@@ -1,397 +1,397 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // NotebookList
 //============================================================================
 
 var IPython = (function (IPython) {
     "use strict";
     
     var utils = IPython.utils;
 
     var NotebookList = function (selector) {
         this.selector = selector;
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.style();
             this.bind_events();
         }
         this.notebooks_list = [];
         this.sessions = {};
     };
 
     NotebookList.prototype.baseProjectUrl = function () {
         return $('body').data('baseProjectUrl');
     };
 
     NotebookList.prototype.notebookPath = function() {
         return $('body').data('notebookPath');
     };
     
     NotebookList.prototype.style = function () {
         $('#notebook_toolbar').addClass('list_toolbar');
         $('#drag_info').addClass('toolbar_info');
         $('#notebook_buttons').addClass('toolbar_buttons');
         $('#notebook_list_header').addClass('list_header');
         this.element.addClass("list_container");
     };
 
 
     NotebookList.prototype.bind_events = function () {
         var that = this;
         $('#refresh_notebook_list').click(function () {
             that.load_list();
         });
         this.element.bind('dragover', function () {
             return false;
         });
         this.element.bind('drop', function(event){
             that.handelFilesUpload(event,'drop');
             return false;
         });
     };
 
     NotebookList.prototype.handelFilesUpload =  function(event, dropOrForm) {
         var that = this;
         var files;
         if(dropOrForm =='drop'){
             files = event.originalEvent.dataTransfer.files;
         } else 
         {
             files = event.originalEvent.target.files;
         }
         for (var i = 0; i < files.length; i++) {
             var f = files[i];
             var reader = new FileReader();
             reader.readAsText(f);
             var name_and_ext = utils.splitext(f.name);
             var nbname = name_and_ext[0];
             var file_ext = name_and_ext[1];
             if (file_ext === '.ipynb') {
                 var item = that.new_notebook_item(0);
                 that.add_name_input(nbname, item);
                 // Store the notebook item in the reader so we can use it later
                 // to know which item it belongs to.
                 $(reader).data('item', item);
                 reader.onload = function (event) {
                     var nbitem = $(event.target).data('item');
                     that.add_notebook_data(event.target.result, nbitem);
                     that.add_upload_button(nbitem);
                 };
             } else {
                 var dialog = 'Uploaded notebooks must be .ipynb files';
                 IPython.dialog.modal({
                     title : 'Invalid file type',
                     body : dialog,
                     buttons : {'OK' : {'class' : 'btn-primary'}}
                 });
             }
         }
         return false;
     };
 
     NotebookList.prototype.clear_list = function () {
         this.element.children('.list_item').remove();
     };
 
     NotebookList.prototype.load_sessions = function(){
         var that = this;
         var settings = {
             processData : false,
             cache : false,
             type : "GET",
             dataType : "json",
             success : $.proxy(that.sessions_loaded, this)
         };
         var url = this.baseProjectUrl() + 'api/sessions';
         $.ajax(url,settings);
     };
 
 
     NotebookList.prototype.sessions_loaded = function(data){
         this.sessions = {};
         var len = data.length;
         if (len > 0) {
             for (var i=0; i<len; i++) {
                 var nb_path;
                 if (!data[i].notebook.path) {
                     nb_path = data[i].notebook.name;
                 }
                 else {
                     nb_path = utils.url_path_join(
                         data[i].notebook.path,
                         data[i].notebook.name
                     );
                 }
                 this.sessions[nb_path] = data[i].id;
             }
         }
         this.load_list();
     };
 
     NotebookList.prototype.load_list = function () {
         var that = this;
         var settings = {
             processData : false,
             cache : false,
             type : "GET",
             dataType : "json",
             success : $.proxy(this.list_loaded, this),
             error : $.proxy( function(){
                 that.list_loaded([], null, null, {msg:"Error connecting to server."});
                              },this)
         };
 
         var url = utils.url_join_encode(
                 this.baseProjectUrl(),
                 'api',
                 'notebooks',
                 this.notebookPath()
         );
         $.ajax(url, settings);
     };
 
 
     NotebookList.prototype.list_loaded = function (data, status, xhr, param) {
         var message = 'Notebook list empty.';
         if (param !== undefined && param.msg) {
             message = param.msg;
         }
         var len = data.length;
         this.clear_list();
         if (len === 0) {
             $(this.new_notebook_item(0))
                 .append(
                     $('<div style="margin:auto;text-align:center;color:grey"/>')
                     .text(message)
                 );
         }
         for (var i=0; i<len; i++) {
             var name = data[i].name;
             var path = this.notebookPath();
             var nbname = utils.splitext(name)[0];
             var item = this.new_notebook_item(i);
             this.add_link(path, nbname, item);
             name = utils.url_path_join(path, name);
             if(this.sessions[name] === undefined){
                 this.add_delete_button(item);
             } else {
                 this.add_shutdown_button(item,this.sessions[name]);
             }
         }
     };
 
 
     NotebookList.prototype.new_notebook_item = function (index) {
         var item = $('<div/>').addClass("list_item").addClass("row-fluid");
         // item.addClass('list_item ui-widget ui-widget-content ui-helper-clearfix');
         // item.css('border-top-style','none');
         item.append($("<div/>").addClass("span12").append(
             $("<a/>").addClass("item_link").append(
                 $("<span/>").addClass("item_name")
             )
         ).append(
             $('<div/>').addClass("item_buttons btn-group pull-right")
         ));
         
         if (index === -1) {
             this.element.append(item);
         } else {
             this.element.children().eq(index).after(item);
         }
         return item;
     };
 
 
     NotebookList.prototype.add_link = function (path, nbname, item) {
         item.data('nbname', nbname);
         item.data('path', path);
         item.find(".item_name").text(nbname);
         item.find("a.item_link")
             .attr('href',
                 utils.url_join_encode(
                     this.baseProjectUrl(),
                     "notebooks",
                     path,
                     nbname + ".ipynb"
                 )
             ).attr('target','_blank');
     };
 
 
     NotebookList.prototype.add_name_input = function (nbname, item) {
         item.data('nbname', nbname);
         item.find(".item_name").empty().append(
             $('<input/>')
             .addClass("nbname_input")
             .attr('value', nbname)
             .attr('size', '30')
             .attr('type', 'text')
         );
     };
 
 
     NotebookList.prototype.add_notebook_data = function (data, item) {
         item.data('nbdata', data);
     };
 
 
     NotebookList.prototype.add_shutdown_button = function (item, session) {
         var that = this;
         var shutdown_button = $("<button/>").text("Shutdown").addClass("btn btn-mini").
             click(function (e) {
                 var settings = {
                     processData : false,
                     cache : false,
                     type : "DELETE",
                     dataType : "json",
                     success : function () {
                         that.load_sessions();
                     }
                 };
                 var url = utils.url_join_encode(
                     that.baseProjectUrl(),
                     'api/sessions',
                     session
                 );
                 $.ajax(url, settings);
                 return false;
             });
         // var new_buttons = item.find('a'); // shutdown_button;
-        item.find(".item_buttons").html("").append(shutdown_button);
+        item.find(".item_buttons").text("").append(shutdown_button);
     };
 
     NotebookList.prototype.add_delete_button = function (item) {
         var new_buttons = $('<span/>').addClass("btn-group pull-right");
         var notebooklist = this;
         var delete_button = $("<button/>").text("Delete").addClass("btn btn-mini").
             click(function (e) {
                 // $(this) is the button that was clicked.
                 var that = $(this);
                 // We use the nbname and notebook_id from the parent notebook_item element's
                 // data because the outer scopes values change as we iterate through the loop.
                 var parent_item = that.parents('div.list_item');
                 var nbname = parent_item.data('nbname');
                 var message = 'Are you sure you want to permanently delete the notebook: ' + nbname + '?';
                 IPython.dialog.modal({
                     title : "Delete notebook",
                     body : message,
                     buttons : {
                         Delete : {
                             class: "btn-danger",
                             click: function() {
                                 var settings = {
                                     processData : false,
                                     cache : false,
                                     type : "DELETE",
                                     dataType : "json",
                                     success : function (data, status, xhr) {
                                         parent_item.remove();
                                     }
                                 };
                                 var url = utils.url_join_encode(
                                     notebooklist.baseProjectUrl(),
                                     'api/notebooks',
                                     notebooklist.notebookPath(),
                                     nbname + '.ipynb'
                                 );
                                 $.ajax(url, settings);
                             }
                         },
                         Cancel : {}
                     }
                 });
                 return false;
             });
-        item.find(".item_buttons").html("").append(delete_button);
+        item.find(".item_buttons").text("").append(delete_button);
     };
 
 
     NotebookList.prototype.add_upload_button = function (item) {
         var that = this;
         var upload_button = $('<button/>').text("Upload")
             .addClass('btn btn-primary btn-mini upload_button')
             .click(function (e) {
                 var nbname = item.find('.item_name > input').val();
                 var nbdata = item.data('nbdata');
                 var content_type = 'application/json';
                 var model = {
                     content : JSON.parse(nbdata),
                 };
                 var settings = {
                     processData : false,
                     cache : false,
                     type : 'PUT',
                     dataType : 'json',
                     data : JSON.stringify(model),
                     headers : {'Content-Type': content_type},
                     success : function (data, status, xhr) {
                         that.add_link(data, nbname, item);
                         that.add_delete_button(item);
                     },
                     error : function (data, status, xhr) {
                         console.log(data, status);
                     }
                 };
 
                 var url = utils.url_join_encode(
                     that.baseProjectUrl(),
                     'api/notebooks',
                     that.notebookPath(),
                     nbname + '.ipynb'
                 );
                 $.ajax(url, settings);
                 return false;
             });
         var cancel_button = $('<button/>').text("Cancel")
             .addClass("btn btn-mini")
             .click(function (e) {
                 console.log('cancel click');
                 item.remove();
                 return false;
             });
         item.find(".item_buttons").empty()
             .append(upload_button)
             .append(cancel_button);
     };
 
 
     NotebookList.prototype.new_notebook = function(){
         var path = this.notebookPath();
         var base_project_url = this.baseProjectUrl();
         var settings = {
             processData : false,
             cache : false,
             type : "POST",
             dataType : "json",
             async : false,
             success : function (data, status, xhr) {
                 var notebook_name = data.name;
                 window.open(
                     utils.url_join_encode(
                         base_project_url,
                         'notebooks',
                         path,
                         notebook_name),
                     '_blank'
                 );
             }
         };
         var url = utils.url_join_encode(
             base_project_url,
             'api/notebooks',
             path
         );
         $.ajax(url, settings);
     };
 
     IPython.NotebookList = NotebookList;
 
     return IPython;
 
 }(IPython));