Splitting notebook.js into muliple files for development ease.

IPython/frontend/html/notebook/static/js/cell.js

@@ -0,0 +1,72 b''
+
+//============================================================================
+// Cell
+//============================================================================
+
+
+var Cell = function (notebook) {
+    this.notebook = notebook;
+    this.selected = false;
+    this.element;
+    this.create_element();
+    if (this.element !== undefined) {
+        this.element.data("cell", this);
+        this.bind_events();
+    }
+    this.cell_id = uuid();
+};
+
+
+Cell.prototype.grow = function(element) {
+    // Grow the cell by hand. This is used upon reloading from JSON, when the
+    // autogrow handler is not called.
+    var dom = element.get(0);
+    var lines_count = 0;
+    // modified split rule from
+    // http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
+    var lines = dom.value.split(/\r|\r\n|\n/);
+    lines_count = lines.length;
+    if (lines_count >= 1) {
+        dom.rows = lines_count;
+    } else {
+        dom.rows = 1;
+    }
+};
+
+
+Cell.prototype.select = function () {
+    this.element.addClass('ui-widget-content ui-corner-all');
+    this.selected = true;
+    // TODO: we need t test across browsers to see if both of these are needed.
+    // In the meantime, there should not be any harm in having them both.
+    this.element.find('textarea').trigger('focusin');
+    this.element.find('textarea').trigger('focus');
+};
+
+
+Cell.prototype.unselect = function () {
+    this.element.removeClass('ui-widget-content ui-corner-all');
+    this.selected = false;
+};
+
+
+Cell.prototype.bind_events = function () {
+    var that = this;
+    var nb = that.notebook
+    that.element.click(function (event) {
+        if (that.selected === false) {
+            nb.select(nb.find_cell_index(that));
+        };
+    });
+    that.element.focusin(function (event) {
+        if (that.selected === false) {
+            nb.select(nb.find_cell_index(that));
+        };
+    });
+};
+
+
+// Subclasses must implement create_element.
+Cell.prototype.create_element = function () {};
+
+

IPython/frontend/html/notebook/static/js/codecell.js

@@ -0,0 +1,195 b''
+
+//============================================================================
+// CodeCell
+//============================================================================
+
+
+var CodeCell = function (notebook) {
+    this.code_mirror = null;
+    this.input_prompt_number = ' ';
+    Cell.apply(this, arguments);
+};
+
+
+CodeCell.prototype = new Cell();
+
+
+CodeCell.prototype.create_element = function () {
+    var cell =  $('<div></div>').addClass('cell code_cell vbox border-box-sizing');
+    var input = $('<div></div>').addClass('input hbox border-box-sizing');
+    input.append($('<div/>').addClass('prompt input_prompt monospace-font'));
+    var input_area = $('<div/>').addClass('input_area box-flex1 border-box-sizing');
+    this.code_mirror = CodeMirror(input_area.get(0), {
+        indentUnit : 4,
+        enterMode : 'flat',
+        tabMode: 'shift'
+    });
+    input.append(input_area);
+    var output = $('<div></div>').addClass('output vbox border-box-sizing');
+    cell.append(input).append(output);
+    this.element = cell;
+    this.collapse()
+};
+
+
+CodeCell.prototype.select = function () {
+    Cell.prototype.select.apply(this);
+    this.code_mirror.focus();
+};
+
+
+CodeCell.prototype.append_pyout = function (data, n) {
+    var toinsert = $("<div/>").addClass("output_area output_pyout hbox monospace-font");
+    toinsert.append($('<div/>').
+        addClass('prompt output_prompt').
+        html('Out[' + n + ']:')
+    );
+    this.append_display_data(data, toinsert);
+    toinsert.children().last().addClass("box_flex1");
+    this.element.find("div.output").append(toinsert);
+    // If we just output latex, typeset it.
+    if (data["text/latex"] !== undefined) {
+        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
+    };
+};
+
+
+CodeCell.prototype.append_pyerr = function (ename, evalue, tb) {
+    var s = '';
+    var len = tb.length;
+    for (var i=0; i<len; i++) {
+        s = s + tb[i] + '\n';
+    }
+    s = s + '\n';
+    this.append_stream(s);
+};
+
+
+CodeCell.prototype.append_display_data = function (data, element) {
+    console.log(data);
+    if (data["text/latex"] !== undefined) {
+        this.append_latex(data["text/latex"], element);
+        // If it is undefined, then we just appended to div.output, which
+        // makes the latex visible and we can typeset it. The typesetting
+        // has to be done after the latex is on the page.
+        if (element === undefined) {
+            MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
+        };
+    } else if (data["image/svg+xml"] !== undefined) {
+        this.append_svg(data["image/svg+xml"], element);
+    } else if (data["image/png"] !== undefined) {
+        this.append_png(data["image/png"], element);
+    } else if (data["text/plain"] !== undefined) {
+        this.append_stream(data["text/plain"], element);
+    };
+    return element;
+};
+
+
+CodeCell.prototype.append_stream = function (data, element) {
+    element = element || this.element.find("div.output");
+    var toinsert = $("<div/>").addClass("output_area output_stream monospace-font");
+    toinsert.append($("<pre/>").addClass("monospace-font").html(fixConsole(data)));
+    element.append(toinsert);
+    return element;
+};
+
+
+CodeCell.prototype.append_svg = function (svg, element) {
+    element = element || this.element.find("div.output");
+    var toinsert = $("<div/>").addClass("output_area output_svg");
+    toinsert.append(svg);
+    element.append(toinsert);
+    return element;
+};
+
+
+CodeCell.prototype.append_png = function (png, element) {
+    element = element || this.element.find("div.output");
+    var toinsert = $("<div/>").addClass("output_area output_png");
+    toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
+    element.append(toinsert);
+    return element;
+};
+
+
+CodeCell.prototype.append_latex = function (latex, element) {
+    // This method cannot do the typesetting because the latex first has to
+    // be on the page.
+    element = element || this.element.find("div.output");
+    var toinsert = $("<div/>").addClass("output_area output_latex monospace-font");
+    toinsert.append(latex);
+    element.append(toinsert);
+    return element;
+}
+
+
+CodeCell.prototype.clear_output = function () {
+    this.element.find("div.output").html("");
+};
+
+
+CodeCell.prototype.collapse = function () {
+    this.element.find('div.output').hide();
+};
+
+
+CodeCell.prototype.expand = function () {
+    this.element.find('div.output').show();
+};
+
+
+CodeCell.prototype.set_input_prompt = function (number) {
+    var n = number || ' ';
+    this.input_prompt_number = n
+    this.element.find('div.input_prompt').html('In&nbsp;[' + n + ']:');
+};
+
+
+CodeCell.prototype.get_code = function () {
+    return this.code_mirror.getValue();
+};
+
+
+CodeCell.prototype.set_code = function (code) {
+    return this.code_mirror.setValue(code);
+};
+
+
+CodeCell.prototype.at_top = function () {
+    var cursor = this.code_mirror.getCursor();
+    if (cursor.line === 0) {
+        return true;
+    } else {
+        return false;
+    }
+};
+
+
+CodeCell.prototype.at_bottom = function () {
+    var cursor = this.code_mirror.getCursor();
+    if (cursor.line === (this.code_mirror.lineCount()-1)) {
+        return true;
+    } else {
+        return false;
+    }
+};
+
+
+CodeCell.prototype.fromJSON = function (data) {
+    if (data.cell_type === 'code') {
+        this.set_code(data.code);
+        this.set_input_prompt(data.prompt_number);
+    };
+};
+
+
+CodeCell.prototype.toJSON = function () {
+    return {
+        code : this.get_code(),
+        cell_type : 'code',
+        prompt_number : this.input_prompt_number
+    };
+};
+
+

IPython/frontend/html/notebook/static/js/kernel.js

@@ -0,0 +1,107 b''
+
+//============================================================================
+// Kernel
+//============================================================================
+
+
+var Kernel = function () {
+    this.kernel_id = null;
+    this.base_url = "/kernels";
+    this.kernel_url = null;
+};
+
+
+Kernel.prototype.get_msg = function (msg_type, content) {
+    var msg = {
+        header : {
+            msg_id : uuid(),
+            username : "bgranger",
+            session: this.session_id,
+            msg_type : msg_type
+        },
+        content : content,
+        parent_header : {}
+    };
+    return msg;
+}
+
+Kernel.prototype.start_kernel = function (callback, context) {
+    var that = this;
+    $.post(this.base_url,
+        function (kernel_id) {
+            that._handle_start_kernel(kernel_id, callback, context);
+        }, 
+        'json'
+    );
+};
+
+
+Kernel.prototype._handle_start_kernel = function (kernel_id, callback, context) {
+    this.kernel_id = kernel_id;
+    this.kernel_url = this.base_url + "/" + this.kernel_id;
+    this._start_channels();
+    callback.call(context);
+};
+
+
+Kernel.prototype._start_channels = function () {
+    var ws_url = "ws://127.0.0.1:8888" + this.kernel_url;
+    this.shell_channel = new WebSocket(ws_url + "/shell");
+    this.iopub_channel = new WebSocket(ws_url + "/iopub");
+}
+
+
+Kernel.prototype.execute = function (code) {
+    var content = {
+        code : code,
+        silent : false,
+        user_variables : [],
+        user_expressions : {}
+    };
+    var msg = this.get_msg("execute_request", content);
+    this.shell_channel.send(JSON.stringify(msg));
+    return msg.header.msg_id;
+}
+
+
+Kernel.prototype.interrupt = function () {
+    $.post(this.kernel_url + "/interrupt");
+};
+
+
+Kernel.prototype.restart = function () {
+    this.status_restarting();
+    url = this.kernel_url + "/restart"
+    var that = this;
+    $.post(url, function (kernel_id) {
+        console.log("Kernel restarted: " + kernel_id);
+        that.kernel_id = kernel_id;
+        that.kernel_url = that.base_url + "/" + that.kernel_id;
+        that.status_idle();
+    }, 'json');
+};
+
+
+Kernel.prototype.status_busy = function () {
+    $("#kernel_status").removeClass("status_idle");
+    $("#kernel_status").removeClass("status_restarting");
+    $("#kernel_status").addClass("status_busy");
+    $("#kernel_status").text("Busy");
+};
+
+
+Kernel.prototype.status_idle = function () {
+    $("#kernel_status").removeClass("status_busy");
+    $("#kernel_status").removeClass("status_restarting");
+    $("#kernel_status").addClass("status_idle");
+    $("#kernel_status").text("Idle");
+};
+
+Kernel.prototype.status_restarting = function () {
+    $("#kernel_status").removeClass("status_busy");
+    $("#kernel_status").removeClass("status_idle");
+    $("#kernel_status").addClass("status_restarting");
+    $("#kernel_status").text("Restarting");
+};
+
+

IPython/frontend/html/notebook/static/js/namespace.js

@@ -0,0 +1,4 b''
+var IPYTHON = {};
+
+
+

IPython/frontend/html/notebook/static/js/notebook_main.js

@@ -0,0 +1,62 b''
+
+//============================================================================
+// On document ready
+//============================================================================
+
+
+$(document).ready(function () {
+
+    $('div#wrapper').addClass('vbox border-box-sizing')
+    $('div.notebook').addClass('box-flex1 border-box-sizing')
+
+    MathJax.Hub.Config({
+        tex2jax: {
+            inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+            displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
+        },
+        displayAlign: 'left', // Change this to 'center' to center equations.
+        "HTML-CSS": {
+            styles: {'.MathJax_Display': {"margin": 0}}
+        }
+    });
+
+    IPYTHON.notebook = new Notebook('div.notebook');
+    IPYTHON.notebook.insert_code_cell_after();
+
+    $("#menu_tabs").tabs();
+
+    $("#help_toolbar").buttonset();
+
+    $("#kernel_toolbar").buttonset();
+    $("#interrupt_kernel").click(function () {IPYTHON.notebook.kernel.interrupt();});
+    $("#restart_kernel").click(function () {IPYTHON.notebook.kernel.restart();});
+    $("#kernel_status").addClass("status_idle");
+
+    $("#move_cell").buttonset();
+    $("#move_up").button("option", "icons", {primary:"ui-icon-arrowthick-1-n"});
+    $("#move_up").button("option", "text", false);
+    $("#move_up").click(function () {IPYTHON.notebook.move_cell_up();});
+    $("#move_down").button("option", "icons", {primary:"ui-icon-arrowthick-1-s"});
+    $("#move_down").button("option", "text", false);
+    $("#move_down").click(function () {IPYTHON.notebook.move_cell_down();});
+
+    $("#insert_delete").buttonset();
+    $("#insert_cell_before").click(function () {IPYTHON.notebook.insert_code_cell_before();});
+    $("#insert_cell_after").click(function () {IPYTHON.notebook.insert_code_cell_after();});
+    $("#delete_cell").button("option", "icons", {primary:"ui-icon-closethick"});
+    $("#delete_cell").button("option", "text", false);
+    $("#delete_cell").click(function () {IPYTHON.notebook.delete_cell();});
+
+    $("#cell_type").buttonset();
+    $("#to_code").click(function () {IPYTHON.notebook.text_to_code();});
+    $("#to_text").click(function () {IPYTHON.notebook.code_to_text();});
+
+    $("#sort").buttonset();
+    $("#sort_cells").click(function () {IPYTHON.notebook.sort_cells();});
+
+    $("#toggle").buttonset();
+    $("#collapse").click(function () {IPYTHON.notebook.collapse();});
+    $("#expand").click(function () {IPYTHON.notebook.expand();});
+
+});
+

IPython/frontend/html/notebook/static/js/textcell.js

@@ -0,0 +1,144 b''
+
+//============================================================================
+// TextCell
+//============================================================================
+
+
+var TextCell = function (notebook) {
+    Cell.apply(this, arguments);
+    this.placeholder = "Type <strong>HTML</strong> and LaTeX: $\\alpha^2$"
+    this.rendered = false;
+};
+
+
+TextCell.prototype = new Cell();
+
+
+TextCell.prototype.create_element = function () {
+    var cell = $("<div>").addClass('cell text_cell').
+               append(
+                   $("<textarea>" + this.placeholder + "</textarea>").
+                   addClass('text_cell_input monospace-font').
+                   attr('rows',1).
+                   attr('cols',80).
+                   autogrow()
+               ).append(
+                   // The tabindex=-1 makes this div focusable.
+                   $('<div></div>').addClass('text_cell_render').attr('tabindex','-1')
+               )
+    this.element = cell;
+};
+
+
+TextCell.prototype.bind_events = function () {
+    Cell.prototype.bind_events.apply(this);
+    var that = this;
+    this.element.keydown(function (event) {
+        if (event.which === 13) {
+            if (that.rendered) {
+                that.edit();
+                event.preventDefault();
+            };
+        };
+    });
+};
+
+
+TextCell.prototype.select = function () {
+    Cell.prototype.select.apply(this);
+    var output = this.element.find("div.text_cell_render");
+    output.trigger('focus');
+};
+
+
+TextCell.prototype.edit = function () {
+    if (this.rendered === true) {
+        var text_cell = this.element;
+        var input = text_cell.find("textarea.text_cell_input");
+        var output = text_cell.find("div.text_cell_render");  
+        output.hide();
+        input.show().trigger('focus');
+        this.rendered = false;
+    };
+};
+
+
+TextCell.prototype.render = function () {
+    if (this.rendered === false) {
+        var text_cell = this.element;
+        var input = text_cell.find("textarea.text_cell_input");
+        var output = text_cell.find("div.text_cell_render");    
+        var text = input.val();
+        if (text === "") {
+            text = this.placeholder;
+            input.val(text);
+        };
+        output.html(text)
+        input.html(text);
+        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
+        input.hide();
+        output.show();
+        this.rendered = true;
+    };
+};
+
+
+TextCell.prototype.config_mathjax = function () {
+    var text_cell = this.element;
+    var that = this;
+    text_cell.click(function () {
+        that.edit();
+    }).focusout(function () {
+        that.render();
+    });
+    
+    text_cell.trigger("focusout");
+};
+
+
+TextCell.prototype.get_text = function() {
+    return this.element.find("textarea.text_cell_input").val();
+};
+
+
+TextCell.prototype.set_text = function(text) {
+    this.element.find("textarea.text_cell_input").val(text);
+    this.element.find("textarea.text_cell_input").html(text);
+    this.element.find("div.text_cell_render").html(text);
+};
+
+
+TextCell.prototype.at_top = function () {
+    if (this.rendered) {
+        return true;
+    } else {
+        return false;
+    }
+};
+
+
+TextCell.prototype.at_bottom = function () {
+    if (this.rendered) {
+        return true;
+    } else {
+        return false;
+    }
+};
+
+
+TextCell.prototype.fromJSON = function (data) {
+    if (data.cell_type === 'text') {
+        this.set_text(data.text);
+        this.grow(this.element.find("textarea.text_cell_input"));
+    };
+}
+
+
+TextCell.prototype.toJSON = function () {
+    return {
+        cell_type : 'text',
+        text : this.get_text(),
+    };
+};
+
+

IPython/frontend/html/notebook/static/js/utils.js

@@ -0,0 +1,62 b''
+
+//============================================================================
+// Utilities
+//============================================================================
+
+
+var uuid = function () {
+    // http://www.ietf.org/rfc/rfc4122.txt
+    var s = [];
+    var hexDigits = "0123456789ABCDEF";
+    for (var i = 0; i < 32; i++) {
+        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
+    }
+    s[12] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
+    s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
+
+    var uuid = s.join("");
+    return uuid;
+};
+
+
+//Fix raw text to parse correctly in crazy XML
+function xmlencode(string) {
+    return string.replace(/\&/g,'&'+'amp;')
+        .replace(/</g,'&'+'lt;')
+        .replace(/>/g,'&'+'gt;')
+        .replace(/\'/g,'&'+'apos;')
+        .replace(/\"/g,'&'+'quot;')
+        .replace(/`/g,'&'+'#96;')
+}
+
+//Map from terminal commands to CSS classes
+attrib = {
+    "30":"cblack", "31":"cred",
+    "32":"cgreen", "33":"cyellow",  
+    "34":"cblue", "36":"ccyan", 
+    "37":"cwhite", "01":"cbold"}
+
+//Fixes escaped console commands, IE colors. Turns them into HTML
+function fixConsole(txt) {
+    txt = xmlencode(txt)
+    var re = /\033\[([\d;]*?)m/
+    var opened = false
+    var cmds = []
+    var opener = ""
+    var closer = ""
+    
+    while (re.test(txt)) {
+        var cmds = txt.match(re)[1].split(";")
+        closer = opened?"</span>":""
+        opened = cmds.length > 1 || cmds[0] != 0
+        var rep = []
+        for (var i in cmds)
+            if (typeof(attrib[cmds[i]]) != "undefined")
+                rep.push(attrib[cmds[i]])
+        opener = rep.length > 0?"<span class=\""+rep.join(" ")+"\">":""
+        txt = txt.replace(re, closer + opener)
+    }
+    if (opened) txt += "</span>"
+    return txt.trim()
+}
+

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

@@ -1,1145 +1,508 b''
-var IPYTHON = {};
-
-
-//============================================================================
-// Utilities
-//============================================================================
-
-
-var uuid = function () {
-    // http://www.ietf.org/rfc/rfc4122.txt
-    var s = [];
-    var hexDigits = "0123456789ABCDEF";
-    for (var i = 0; i < 32; i++) {
-        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
-    }
-    s[12] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
-    s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
-
-    var uuid = s.join("");
-    return uuid;
-};
-
-
-//Fix raw text to parse correctly in crazy XML
-function xmlencode(string) {
-    return string.replace(/\&/g,'&'+'amp;')
-        .replace(/</g,'&'+'lt;')
-        .replace(/>/g,'&'+'gt;')
-        .replace(/\'/g,'&'+'apos;')
-        .replace(/\"/g,'&'+'quot;')
-        .replace(/`/g,'&'+'#96;')
-}
-
-//Map from terminal commands to CSS classes
-attrib = {
-    "30":"cblack", "31":"cred",
-    "32":"cgreen", "33":"cyellow",  
-    "34":"cblue", "36":"ccyan", 
-    "37":"cwhite", "01":"cbold"}
-
-//Fixes escaped console commands, IE colors. Turns them into HTML
-function fixConsole(txt) {
-    txt = xmlencode(txt)
-    var re = /\033\[([\d;]*?)m/
-    var opened = false
-    var cmds = []
-    var opener = ""
-    var closer = ""
-    
-    while (re.test(txt)) {
-        var cmds = txt.match(re)[1].split(";")
-        closer = opened?"</span>":""
-        opened = cmds.length > 1 || cmds[0] != 0
-        var rep = []
-        for (var i in cmds)
-            if (typeof(attrib[cmds[i]]) != "undefined")
-                rep.push(attrib[cmds[i]])
-        opener = rep.length > 0?"<span class=\""+rep.join(" ")+"\">":""
-        txt = txt.replace(re, closer + opener)
-    }
-    if (opened) txt += "</span>"
-    return txt.trim()
-}
-
 
 //============================================================================
 // Notebook
 //============================================================================
 
 
 var Notebook = function (selector) {
     this.element = $(selector);
     this.element.scroll();
     this.element.data("notebook", this);
     this.next_prompt_number = 1;
     this.kernel = null;
     this.msg_cell_map = {};
     this.filename = null;
     this.notebook_load_re = /%notebook load/
     this.notebook_save_re = /%notebook save/
     this.notebook_filename_re = /(\w)+.ipynb/
     this.bind_events();
     this.start_kernel();
 };
 
 
 Notebook.prototype.bind_events = function () {
     var that = this;
     $(document).keydown(function (event) {
         // console.log(event);
         if (event.which === 38) {
             var cell = that.selected_cell();
             if (cell.at_top()) {
                 event.preventDefault();
                 that.select_prev();
             };
         } else if (event.which === 40) {
             var cell = that.selected_cell();
             if (cell.at_bottom()) {
                 event.preventDefault();
                 that.select_next();
             };
         } else if (event.which === 13 && event.shiftKey) {
             // The focus is not quite working here.
             var cell = that.selected_cell();
             var cell_index = that.find_cell_index(cell);
             // TODO: the logic here needs to be moved into appropriate
             // methods of Notebook.
             if (cell instanceof CodeCell) {
                 event.preventDefault();
                 cell.clear_output();
                 var code = cell.get_code();
                 if (that.notebook_load_re.test(code)) {
                     var code_parts = code.split(' ');
                     if (code_parts.length === 3) {
                         that.load_notebook(code_parts[2]);
                     };
                 } else if (that.notebook_save_re.test(code)) {
                     var code_parts = code.split(' ');
                     if (code_parts.length === 3) {
                         that.save_notebook(code_parts[2]);
                     } else {
                         that.save_notebook()
                     };
                 } else {
                     var msg_id = that.kernel.execute(cell.get_code());
                     that.msg_cell_map[msg_id] = cell.cell_id;
                 };
             } else if (cell instanceof TextCell) {
                 event.preventDefault();
                 cell.render();
             }
             if (cell_index === (that.ncells()-1)) {
                 that.insert_code_cell_after();
             } else {
                 that.select(cell_index+1);
             };
         };
     });
 };
 
 
 // Cell indexing, retrieval, etc.
 
 
 Notebook.prototype.cell_elements = function () {
     return this.element.children("div.cell");
 }
 
 
 Notebook.prototype.ncells = function (cell) {
     return this.cell_elements().length;
 }
 
 
 // TODO: we are often calling cells as cells()[i], which we should optimize
 // to cells(i) or a new method.
 Notebook.prototype.cells = function () {
     return this.cell_elements().toArray().map(function (e) {
         return $(e).data("cell");
     });
 }
 
 
 Notebook.prototype.find_cell_index = function (cell) {
     var result = null;
     this.cell_elements().filter(function (index) {
         if ($(this).data("cell") === cell) {
             result = index;
         };
     });
     return result;
 };
 
 
 Notebook.prototype.index_or_selected = function (index) {
     return index || this.selected_index() || 0;
 }
 
 
 Notebook.prototype.select = function (index) {
     if (index !== undefined && index >= 0 && index < this.ncells()) {
         if (this.selected_index() !== null) {
             this.selected_cell().unselect();
         };
         this.cells()[index].select();
     };
     return this;
 };
 
 
 Notebook.prototype.select_next = function () {
     var index = this.selected_index();
     if (index !== null && index >= 0 && (index+1) < this.ncells()) {
         this.select(index+1);
     };
     return this;
 };
 
 
 Notebook.prototype.select_prev = function () {
     var index = this.selected_index();
     if (index !== null && index >= 0 && (index-1) < this.ncells()) {
         this.select(index-1);
     };
     return this;
 };
 
 
 Notebook.prototype.selected_index = function () {
     var result = null;
     this.cell_elements().filter(function (index) {
         if ($(this).data("cell").selected === true) {
             result = index;
         };
     });
     return result;
 };
 
 
 Notebook.prototype.cell_for_msg = function (msg_id) {
     var cell_id = this.msg_cell_map[msg_id];
     var result = null;
     this.cell_elements().filter(function (index) {
         cell = $(this).data("cell");
         if (cell.cell_id === cell_id) {
             result = cell;
         };
     });
     return result;
 };
 
 
 Notebook.prototype.selected_cell = function () {
     return this.cell_elements().eq(this.selected_index()).data("cell");
 }
 
 
 // Cell insertion, deletion and moving.
 
 
 Notebook.prototype.delete_cell = function (index) {
     var i = index || this.selected_index();
     if (i !== null && i >= 0 && i < this.ncells()) {
         this.cell_elements().eq(i).remove();
         if (i === (this.ncells())) {
             this.select(i-1);
         } else {
             this.select(i);
         };
     };
     return this;
 };
 
 
 Notebook.prototype.append_cell = function (cell) {
     this.element.append(cell.element);
     return this;
 };
 
 
 Notebook.prototype.insert_cell_after = function (cell, index) {
     var ncells = this.ncells();
     if (ncells === 0) {
         this.append_cell(cell);
         return this;
     };
     if (index >= 0 && index < ncells) {
         this.cell_elements().eq(index).after(cell.element);
     };
     return this
 };
 
 
 Notebook.prototype.insert_cell_before = function (cell, index) {
     var ncells = this.ncells();
     if (ncells === 0) {
         this.append_cell(cell);
         return this;
     };
     if (index >= 0 && index < ncells) {
         this.cell_elements().eq(index).before(cell.element);
     };
     return this;
 };
 
 
 Notebook.prototype.move_cell_up = function (index) {
     var i = index || this.selected_index();
     if (i !== null && i < this.ncells() && i > 0) {
         var pivot = this.cell_elements().eq(i-1);
         var tomove = this.cell_elements().eq(i);
         if (pivot !== null && tomove !== null) {
             tomove.detach();
             pivot.before(tomove);
             this.select(i-1);
         };
     };
     return this;
 }
 
 
 Notebook.prototype.move_cell_down = function (index) {
     var i = index || this.selected_index();
     if (i !== null && i < (this.ncells()-1) && i >= 0) {
         var pivot = this.cell_elements().eq(i+1)
         var tomove = this.cell_elements().eq(i)
         if (pivot !== null && tomove !== null) {
             tomove.detach();
             pivot.after(tomove);
             this.select(i+1);
         };
     };
     return this;
 }
 
 
 Notebook.prototype.sort_cells = function () {
     var ncells = this.ncells();
     var sindex = this.selected_index();
     var swapped;
     do {
         swapped = false
         for (var i=1; i<ncells; i++) {
             current = this.cell_elements().eq(i).data("cell");
             previous = this.cell_elements().eq(i-1).data("cell");
             if (previous.input_prompt_number > current.input_prompt_number) {
                 this.move_cell_up(i);
                 swapped = true;
             };
         };
     } while (swapped);
     this.select(sindex);
     return this;
 };
 
 
 Notebook.prototype.insert_code_cell_before = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var cell = new CodeCell(this);
     cell.set_input_prompt(this.next_prompt_number);
     this.next_prompt_number = this.next_prompt_number + 1;
     this.insert_cell_before(cell, i);
     this.select(this.find_cell_index(cell));
     return this;
 }
 
 
 Notebook.prototype.insert_code_cell_after = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var cell = new CodeCell(this);
     cell.set_input_prompt(this.next_prompt_number);
     this.next_prompt_number = this.next_prompt_number + 1;
     this.insert_cell_after(cell, i);
     this.select(this.find_cell_index(cell));
     return this;
 }
 
 
 Notebook.prototype.insert_text_cell_before = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var cell = new TextCell(this);
     cell.config_mathjax();
     this.insert_cell_before(cell, i);
     this.select(this.find_cell_index(cell));
     return this;
 }
 
 
 Notebook.prototype.insert_text_cell_after = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var cell = new TextCell(this);
     cell.config_mathjax();
     this.insert_cell_after(cell, i);
     this.select(this.find_cell_index(cell));
     return this;
 }
 
 
 Notebook.prototype.text_to_code = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var source_element = this.cell_elements().eq(i);
     var source_cell = source_element.data("cell");
     if (source_cell instanceof TextCell) {
         this.insert_code_cell_after(i);
         var target_cell = this.cells()[i+1];
         target_cell.set_code(source_cell.get_text());
         source_element.remove();
     };
 };
 
 
 Notebook.prototype.code_to_text = function (index) {
     // TODO: Bounds check for i
     var i = this.index_or_selected(index);
     var source_element = this.cell_elements().eq(i);
     var source_cell = source_element.data("cell");
     if (source_cell instanceof CodeCell) {
         this.insert_text_cell_after(i);
         var target_cell = this.cells()[i+1];
         var text = source_cell.get_code();
         if (text === "") {text = target_cell.placeholder;};
         target_cell.set_text(text);
         source_element.remove();
         target_cell.edit();
     };
 };
 
 
 // Cell collapsing
 
 Notebook.prototype.collapse = function (index) {
     var i = this.index_or_selected(index);
     this.cells()[i].collapse();
 };
 
 
 Notebook.prototype.expand = function (index) {
     var i = this.index_or_selected(index);
     this.cells()[i].expand();
 };
 
 
 // Kernel related things
 
 Notebook.prototype.start_kernel = function () {
     this.kernel = new Kernel();
     this.kernel.start_kernel(this._kernel_started, this);
 };
 
 
 Notebook.prototype._kernel_started = function () {
     console.log("Kernel started: ", this.kernel.kernel_id);
     var that = this;
 
     this.kernel.shell_channel.onmessage = function (e) {
         reply = $.parseJSON(e.data);
         // console.log(reply);
         var msg_type = reply.header.msg_type;
         var cell = that.cell_for_msg(reply.parent_header.msg_id);
         if (msg_type === "execute_reply") {
             cell.set_input_prompt(reply.content.execution_count);
         };
     };
 
     this.kernel.iopub_channel.onmessage = function (e) {
         reply = $.parseJSON(e.data);
         var content = reply.content;
         console.log(reply);
         var msg_type = reply.header.msg_type;
         var cell = that.cell_for_msg(reply.parent_header.msg_id);
         if (msg_type === "stream") {
             cell.expand();
             cell.append_stream(content.data + "\n");
         } else if (msg_type === "display_data") {
             cell.expand();
             cell.append_display_data(content.data);
         } else if (msg_type === "pyout") {
             cell.expand();
             cell.append_pyout(content.data, content.execution_count)
         } else if (msg_type === "pyerr") {
             cell.expand();
             cell.append_pyerr(content.ename, content.evalue, content.traceback);
         } else if (msg_type === "status") {
             if (content.execution_state === "busy") {
                 that.kernel.status_busy();
             } else if (content.execution_state === "idle") {
                 that.kernel.status_idle();
             };
         }
     };
 };
 
 
 // Persistance and loading
 
 
 Notebook.prototype.fromJSON = function (data) {
     var ncells = this.ncells();
     for (var i=0; i<ncells; i++) {
         // Always delete cell 0 as they get renumbered as they are deleted.
         this.delete_cell(0);
     };
     var new_cells = data.cells;
     ncells = new_cells.length;
     var cell_data = null;
     for (var i=0; i<ncells; i++) {
         cell_data = new_cells[i];
         if (cell_data.cell_type == 'code') {
             this.insert_code_cell_after();
             this.selected_cell().fromJSON(cell_data);
         } else if (cell_data.cell_type === 'text') {
             this.insert_text_cell_after();
             this.selected_cell().fromJSON(cell_data);
         };
     };
 };
 
 
 Notebook.prototype.toJSON = function () {
     var cells = this.cells();
     var ncells = cells.length;
     cell_array = new Array(ncells);
     for (var i=0; i<ncells; i++) {
         cell_array[i] = cells[i].toJSON();
     };
     json = {
         cells : cell_array
     };
     return json
 };
 
 
 Notebook.prototype.test_filename = function (filename) {
     if (this.notebook_filename_re.test(filename)) {
         return true;
     } else {
         var bad_filename = $('<div/>');
         bad_filename.html(
             "The filename you entered (" + filename + ") is not valid. Notebook filenames must have the following form: foo.ipynb"
         );
         bad_filename.dialog({title: 'Invalid filename', modal: true});
         return false;
     };
 };
 
 Notebook.prototype.save_notebook = function (filename) {
     this.filename = filename || this.filename || '';
     if (this.filename === '') {
         var no_filename = $('<div/>');
         no_filename.html(
             "This notebook has no filename, please specify a filename of the form: foo.ipynb"
         );
         no_filename.dialog({title: 'Missing filename', modal: true});
         return;
     }
     if (!this.test_filename(this.filename)) {return;}
     var thedata = this.toJSON();
     var settings = {
       processData : false,
       cache : false,
       type : "PUT",
       data : JSON.stringify(thedata),
       success : function (data, status, xhr) {console.log(data);}
     };
     $.ajax("/notebooks/" + this.filename, settings);
 };
 
 
 Notebook.prototype.load_notebook = function (filename) {
     if (!this.test_filename(filename)) {return;}
     var that = this;
     // We do the call with settings so we can set cache to false.
     var settings = {
       processData : false,
       cache : false,
       type : "GET",
       dataType : "json",
       success : function (data, status, xhr) {
           that.fromJSON(data);
           that.filename = filename;
           that.kernel.restart();
       }
     };
     $.ajax("/notebooks/" + filename, settings);
 }
 
-
-//============================================================================
-// Cell
-//============================================================================
-
-
-var Cell = function (notebook) {
-    this.notebook = notebook;
-    this.selected = false;
-    this.element;
-    this.create_element();
-    if (this.element !== undefined) {
-        this.element.data("cell", this);
-        this.bind_events();
-    }
-    this.cell_id = uuid();
-};
-
-
-Cell.prototype.grow = function(element) {
-    // Grow the cell by hand. This is used upon reloading from JSON, when the
-    // autogrow handler is not called.
-    var dom = element.get(0);
-    var lines_count = 0;
-    // modified split rule from
-    // http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
-    var lines = dom.value.split(/\r|\r\n|\n/);
-    lines_count = lines.length;
-    if (lines_count >= 1) {
-        dom.rows = lines_count;
-    } else {
-        dom.rows = 1;
-    }
-};
-
-
-Cell.prototype.select = function () {
-    this.element.addClass('ui-widget-content ui-corner-all');
-    this.selected = true;
-    // TODO: we need t test across browsers to see if both of these are needed.
-    // In the meantime, there should not be any harm in having them both.
-    this.element.find('textarea').trigger('focusin');
-    this.element.find('textarea').trigger('focus');
-};
-
-
-Cell.prototype.unselect = function () {
-    this.element.removeClass('ui-widget-content ui-corner-all');
-    this.selected = false;
-};
-
-
-Cell.prototype.bind_events = function () {
-    var that = this;
-    var nb = that.notebook
-    that.element.click(function (event) {
-        if (that.selected === false) {
-            nb.select(nb.find_cell_index(that));
-        };
-    });
-    that.element.focusin(function (event) {
-        if (that.selected === false) {
-            nb.select(nb.find_cell_index(that));
-        };
-    });
-};
-
-
-// Subclasses must implement create_element.
-Cell.prototype.create_element = function () {};
-
-
-//============================================================================
-// CodeCell
-//============================================================================
-
-
-var CodeCell = function (notebook) {
-    this.code_mirror = null;
-    this.input_prompt_number = ' ';
-    Cell.apply(this, arguments);
-};
-
-
-CodeCell.prototype = new Cell();
-
-
-CodeCell.prototype.create_element = function () {
-    var cell =  $('<div></div>').addClass('cell code_cell vbox border-box-sizing');
-    var input = $('<div></div>').addClass('input hbox border-box-sizing');
-    input.append($('<div/>').addClass('prompt input_prompt monospace-font'));
-    var input_area = $('<div/>').addClass('input_area box-flex1 border-box-sizing');
-    this.code_mirror = CodeMirror(input_area.get(0), {
-        indentUnit : 4,
-        enterMode : 'flat',
-        tabMode: 'shift'
-    });
-    input.append(input_area);
-    var output = $('<div></div>').addClass('output vbox border-box-sizing');
-    cell.append(input).append(output);
-    this.element = cell;
-    this.collapse()
-};
-
-
-CodeCell.prototype.select = function () {
-    Cell.prototype.select.apply(this);
-    this.code_mirror.focus();
-};
-
-
-CodeCell.prototype.append_pyout = function (data, n) {
-    var toinsert = $("<div/>").addClass("output_area output_pyout hbox monospace-font");
-    toinsert.append($('<div/>').
-        addClass('prompt output_prompt').
-        html('Out[' + n + ']:')
-    );
-    this.append_display_data(data, toinsert);
-    toinsert.children().last().addClass("box_flex1");
-    this.element.find("div.output").append(toinsert);
-    // If we just output latex, typeset it.
-    if (data["text/latex"] !== undefined) {
-        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
-    };
-};
-
-
-CodeCell.prototype.append_pyerr = function (ename, evalue, tb) {
-    var s = '';
-    var len = tb.length;
-    for (var i=0; i<len; i++) {
-        s = s + tb[i] + '\n';
-    }
-    s = s + '\n';
-    this.append_stream(s);
-};
-
-
-CodeCell.prototype.append_display_data = function (data, element) {
-    console.log(data);
-    if (data["text/latex"] !== undefined) {
-        this.append_latex(data["text/latex"], element);
-        // If it is undefined, then we just appended to div.output, which
-        // makes the latex visible and we can typeset it. The typesetting
-        // has to be done after the latex is on the page.
-        if (element === undefined) {
-            MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
-        };
-    } else if (data["image/svg+xml"] !== undefined) {
-        this.append_svg(data["image/svg+xml"], element);
-    } else if (data["image/png"] !== undefined) {
-        this.append_png(data["image/png"], element);
-    } else if (data["text/plain"] !== undefined) {
-        this.append_stream(data["text/plain"], element);
-    };
-    return element;
-};
-
-
-CodeCell.prototype.append_stream = function (data, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_stream monospace-font");
-    toinsert.append($("<pre/>").addClass("monospace-font").html(fixConsole(data)));
-    element.append(toinsert);
-    return element;
-};
-
-
-CodeCell.prototype.append_svg = function (svg, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_svg");
-    toinsert.append(svg);
-    element.append(toinsert);
-    return element;
-};
-
-
-CodeCell.prototype.append_png = function (png, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_png");
-    toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
-    element.append(toinsert);
-    return element;
-};
-
-
-CodeCell.prototype.append_latex = function (latex, element) {
-    // This method cannot do the typesetting because the latex first has to
-    // be on the page.
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_latex monospace-font");
-    toinsert.append(latex);
-    element.append(toinsert);
-    return element;
-}
-
-
-CodeCell.prototype.clear_output = function () {
-    this.element.find("div.output").html("");
-};
-
-
-CodeCell.prototype.collapse = function () {
-    this.element.find('div.output').hide();
-};
-
-
-CodeCell.prototype.expand = function () {
-    this.element.find('div.output').show();
-};
-
-
-CodeCell.prototype.set_input_prompt = function (number) {
-    var n = number || ' ';
-    this.input_prompt_number = n
-    this.element.find('div.input_prompt').html('In&nbsp;[' + n + ']:');
-};
-
-
-CodeCell.prototype.get_code = function () {
-    return this.code_mirror.getValue();
-};
-
-
-CodeCell.prototype.set_code = function (code) {
-    return this.code_mirror.setValue(code);
-};
-
-
-CodeCell.prototype.at_top = function () {
-    var cursor = this.code_mirror.getCursor();
-    if (cursor.line === 0) {
-        return true;
-    } else {
-        return false;
-    }
-};
-
-
-CodeCell.prototype.at_bottom = function () {
-    var cursor = this.code_mirror.getCursor();
-    if (cursor.line === (this.code_mirror.lineCount()-1)) {
-        return true;
-    } else {
-        return false;
-    }
-};
-
-
-CodeCell.prototype.fromJSON = function (data) {
-    if (data.cell_type === 'code') {
-        this.set_code(data.code);
-        this.set_input_prompt(data.prompt_number);
-    };
-};
-
-
-CodeCell.prototype.toJSON = function () {
-    return {
-        code : this.get_code(),
-        cell_type : 'code',
-        prompt_number : this.input_prompt_number
-    };
-};
-
-//============================================================================
-// TextCell
-//============================================================================
-
-
-var TextCell = function (notebook) {
-    Cell.apply(this, arguments);
-    this.placeholder = "Type <strong>HTML</strong> and LaTeX: $\\alpha^2$"
-    this.rendered = false;
-};
-
-
-TextCell.prototype = new Cell();
-
-
-TextCell.prototype.create_element = function () {
-    var cell = $("<div>").addClass('cell text_cell').
-               append(
-                   $("<textarea>" + this.placeholder + "</textarea>").
-                   addClass('text_cell_input monospace-font').
-                   attr('rows',1).
-                   attr('cols',80).
-                   autogrow()
-               ).append(
-                   // The tabindex=-1 makes this div focusable.
-                   $('<div></div>').addClass('text_cell_render').attr('tabindex','-1')
-               )
-    this.element = cell;
-};
-
-
-TextCell.prototype.bind_events = function () {
-    Cell.prototype.bind_events.apply(this);
-    var that = this;
-    this.element.keydown(function (event) {
-        if (event.which === 13) {
-            if (that.rendered) {
-                that.edit();
-                event.preventDefault();
-            };
-        };
-    });
-};
-
-
-TextCell.prototype.select = function () {
-    Cell.prototype.select.apply(this);
-    var output = this.element.find("div.text_cell_render");
-    output.trigger('focus');
-};
-
-
-TextCell.prototype.edit = function () {
-    if (this.rendered === true) {
-        var text_cell = this.element;
-        var input = text_cell.find("textarea.text_cell_input");
-        var output = text_cell.find("div.text_cell_render");  
-        output.hide();
-        input.show().trigger('focus');
-        this.rendered = false;
-    };
-};
-
-
-TextCell.prototype.render = function () {
-    if (this.rendered === false) {
-        var text_cell = this.element;
-        var input = text_cell.find("textarea.text_cell_input");
-        var output = text_cell.find("div.text_cell_render");    
-        var text = input.val();
-        if (text === "") {
-            text = this.placeholder;
-            input.val(text);
-        };
-        output.html(text)
-        input.html(text);
-        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
-        input.hide();
-        output.show();
-        this.rendered = true;
-    };
-};
-
-
-TextCell.prototype.config_mathjax = function () {
-    var text_cell = this.element;
-    var that = this;
-    text_cell.click(function () {
-        that.edit();
-    }).focusout(function () {
-        that.render();
-    });
-    
-    text_cell.trigger("focusout");
-};
-
-
-TextCell.prototype.get_text = function() {
-    return this.element.find("textarea.text_cell_input").val();
-};
-
-
-TextCell.prototype.set_text = function(text) {
-    this.element.find("textarea.text_cell_input").val(text);
-    this.element.find("textarea.text_cell_input").html(text);
-    this.element.find("div.text_cell_render").html(text);
-};
-
-
-TextCell.prototype.at_top = function () {
-    if (this.rendered) {
-        return true;
-    } else {
-        return false;
-    }
-};
-
-
-TextCell.prototype.at_bottom = function () {
-    if (this.rendered) {
-        return true;
-    } else {
-        return false;
-    }
-};
-
-
-TextCell.prototype.fromJSON = function (data) {
-    if (data.cell_type === 'text') {
-        this.set_text(data.text);
-        this.grow(this.element.find("textarea.text_cell_input"));
-    };
-}
-
-
-TextCell.prototype.toJSON = function () {
-    return {
-        cell_type : 'text',
-        text : this.get_text(),
-    };
-};
-
-//============================================================================
-// On document ready
-//============================================================================
-
-
-var Kernel = function () {
-    this.kernel_id = null;
-    this.base_url = "/kernels";
-    this.kernel_url = null;
-};
-
-
-Kernel.prototype.get_msg = function (msg_type, content) {
-    var msg = {
-        header : {
-            msg_id : uuid(),
-            username : "bgranger",
-            session: this.session_id,
-            msg_type : msg_type
-        },
-        content : content,
-        parent_header : {}
-    };
-    return msg;
-}
-
-Kernel.prototype.start_kernel = function (callback, context) {
-    var that = this;
-    $.post(this.base_url,
-        function (kernel_id) {
-            that._handle_start_kernel(kernel_id, callback, context);
-        }, 
-        'json'
-    );
-};
-
-
-Kernel.prototype._handle_start_kernel = function (kernel_id, callback, context) {
-    this.kernel_id = kernel_id;
-    this.kernel_url = this.base_url + "/" + this.kernel_id;
-    this._start_channels();
-    callback.call(context);
-};
-
-
-Kernel.prototype._start_channels = function () {
-    var ws_url = "ws://127.0.0.1:8888" + this.kernel_url;
-    this.shell_channel = new WebSocket(ws_url + "/shell");
-    this.iopub_channel = new WebSocket(ws_url + "/iopub");
-}
-
-
-Kernel.prototype.execute = function (code) {
-    var content = {
-        code : code,
-        silent : false,
-        user_variables : [],
-        user_expressions : {}
-    };
-    var msg = this.get_msg("execute_request", content);
-    this.shell_channel.send(JSON.stringify(msg));
-    return msg.header.msg_id;
-}
-
-
-Kernel.prototype.interrupt = function () {
-    $.post(this.kernel_url + "/interrupt");
-};
-
-
-Kernel.prototype.restart = function () {
-    this.status_restarting();
-    url = this.kernel_url + "/restart"
-    var that = this;
-    $.post(url, function (kernel_id) {
-        console.log("Kernel restarted: " + kernel_id);
-        that.kernel_id = kernel_id;
-        that.kernel_url = that.base_url + "/" + that.kernel_id;
-        that.status_idle();
-    }, 'json');
-};
-
-
-Kernel.prototype.status_busy = function () {
-    $("#kernel_status").removeClass("status_idle");
-    $("#kernel_status").removeClass("status_restarting");
-    $("#kernel_status").addClass("status_busy");
-    $("#kernel_status").text("Busy");
-};
-
-
-Kernel.prototype.status_idle = function () {
-    $("#kernel_status").removeClass("status_busy");
-    $("#kernel_status").removeClass("status_restarting");
-    $("#kernel_status").addClass("status_idle");
-    $("#kernel_status").text("Idle");
-};
-
-Kernel.prototype.status_restarting = function () {
-    $("#kernel_status").removeClass("status_busy");
-    $("#kernel_status").removeClass("status_idle");
-    $("#kernel_status").addClass("status_restarting");
-    $("#kernel_status").text("Restarting");
-};
-
-//============================================================================
-// On document ready
-//============================================================================
-
-
-$(document).ready(function () {
-
-    $('div#wrapper').addClass('vbox border-box-sizing')
-    $('div.notebook').addClass('box-flex1 border-box-sizing')
-
-    MathJax.Hub.Config({
-        tex2jax: {
-            inlineMath: [ ['$','$'], ["\\(","\\)"] ],
-            displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
-        },
-        displayAlign: 'left', // Change this to 'center' to center equations.
-        "HTML-CSS": {
-            styles: {'.MathJax_Display': {"margin": 0}}
-        }
-    });
-
-    IPYTHON.notebook = new Notebook('div.notebook');
-    IPYTHON.notebook.insert_code_cell_after();
-
-    $("#menu_tabs").tabs();
-
-    $("#help_toolbar").buttonset();
-
-    $("#kernel_toolbar").buttonset();
-    $("#interrupt_kernel").click(function () {IPYTHON.notebook.kernel.interrupt();});
-    $("#restart_kernel").click(function () {IPYTHON.notebook.kernel.restart();});
-    $("#kernel_status").addClass("status_idle");
-
-    $("#move_cell").buttonset();
-    $("#move_up").button("option", "icons", {primary:"ui-icon-arrowthick-1-n"});
-    $("#move_up").button("option", "text", false);
-    $("#move_up").click(function () {IPYTHON.notebook.move_cell_up();});
-    $("#move_down").button("option", "icons", {primary:"ui-icon-arrowthick-1-s"});
-    $("#move_down").button("option", "text", false);
-    $("#move_down").click(function () {IPYTHON.notebook.move_cell_down();});
-
-    $("#insert_delete").buttonset();
-    $("#insert_cell_before").click(function () {IPYTHON.notebook.insert_code_cell_before();});
-    $("#insert_cell_after").click(function () {IPYTHON.notebook.insert_code_cell_after();});
-    $("#delete_cell").button("option", "icons", {primary:"ui-icon-closethick"});
-    $("#delete_cell").button("option", "text", false);
-    $("#delete_cell").click(function () {IPYTHON.notebook.delete_cell();});
-
-    $("#cell_type").buttonset();
-    $("#to_code").click(function () {IPYTHON.notebook.text_to_code();});
-    $("#to_text").click(function () {IPYTHON.notebook.code_to_text();});
-
-    $("#sort").buttonset();
-    $("#sort_cells").click(function () {IPYTHON.notebook.sort_cells();});
-
-    $("#toggle").buttonset();
-    $("#collapse").click(function () {IPYTHON.notebook.collapse();});
-    $("#expand").click(function () {IPYTHON.notebook.expand();});
-
-});
-