Base of an as you type conpleter.

	when invoking the completer, instead of having to chose/dismiss, you can
	continue typing, it will filter the result "as you type" and dismiss itself
	if ther is no match left.

	As it is now, it's only works with lowercase letters, I need to find a workaroud
	for this.

	for example
	if you type :
	* P-y-<tab>-S-o-m-e-t-h-i-n-g
	* it will propose PySide, but will dismiss when 'o' is pressed and pasting Pyso with a lower case 's'

IPython/frontend/html/notebook/static/css/notebook.css

@@ -1,427 +1,436 b''
 /**
  * Primary styles
  *
  * Author: IPython Development Team
  */
 
 
 body {
     background-color: white;
     /* This makes sure that the body covers the entire window and needs to
        be in a different element than the display: box in wrapper below */
     position: absolute;
     left: 0px;
     right: 0px;
     top: 0px;
     bottom: 0px;
     overflow: hidden;
 }
 
 span#save_widget {
     position: static;
     left: 0px;
     padding: 5px 0px;
     margin: 0px 0px 0px 0px;
 }
 
 span#quick_help_area {
     position: static;
     padding: 5px 0px;
     margin: 0px 0px 0px 0px;
 }
 
 input#notebook_name {
     height: 1em;
     line-height: 1em;
     padding: 5px;
 }
 
 span#kernel_status {
     position: absolute;
     padding: 8px 5px 5px 5px;
     right: 10px;
     font-weight: bold;
 }
 
 
 .status_idle {
     color: gray;
     visibility: hidden;
 }
 
 .status_busy {
     color: red;
 }
 
 .status_restarting {
     color: black;
 }
 
 div#left_panel {
     overflow-y: auto;
     top: 0px;
     left: 0px;
     margin: 0px;
     padding: 0px;
     position: absolute;
 }
 
 div.section_header {
     padding: 5px;
 }
 
 div.section_header h3 {
     display: inline;
 }
 
 div.section_content {
     padding: 5px;
 }
 
 span.section_row_buttons button {
     width: 70px;
 }
 
 span.section_row_buttons a {
     width: 70px;
 }
 
 .section_row {
     margin: 5px 0px;
 }
 
 .section_row_buttons {
     float: right;
 }
 
 #kernel_persist {
     float: right;
 }
 
 .help_string {
     float: right;
     width: 170px;
     padding: 0px 5px;
     text-align: left;
     font-size: 85%;
 }
 
 .help_string_label {
     float: right;
     font-size: 85%;
 }
 
 #autoindent_span {
     float: right;
 }
 
 #timebeforetooltip_span {
     float: right;
 }
 
 #tooltipontab_span {
     float: right;
 }
 
 #smartcompleter_span {
     float: right;
 }
 
 .checkbox_label {
     font-size: 85%;
     float: right;
     padding: 0.3em;
 }
 
 .section_row_header {
     float: left;
     font-size: 85%;
     padding: 0.4em 0em;
     font-weight: bold;
 }
 
 span.button_label {
     padding: 0.2em 1em;
     font-size: 77%;
     float: right;
 }
 
 /* This is needed because FF was adding a 2px margin top and bottom. */
 .section_row .ui-button {
     margin-top: 0px;
     margin-bottom: 0px;
 }
 
 #download_format {
     float: right;
     font-size: 85%;
     width: 62px;
     margin: 1px 5px;
 }
 
 div#left_panel_splitter {
     width: 8px;
     top: 0px;
     left: 202px;
     margin: 0px;
     padding: 0px;
     position: absolute;
 }
 
 div#notebook_panel {
 /*    The L margin will be set in the Javascript code*/
     margin: 0px 0px 0px 0px;
     padding: 0px;
 }
 
 div#notebook {
     overflow-y: scroll;
     overflow-x: auto;
     width: 100%;
     /* This spaces the cell away from the edge of the notebook area */
     padding: 5px 5px 15px 5px;
     margin: 0px
     background-color: white;
 }
 
 div#pager_splitter {
     height: 8px;
 }
 
 div#pager {
     padding: 15px;
     overflow: auto;
 }
 
 div.cell {
     width: 100%;
     padding: 5px 5px 5px 0px;
     /* This acts as a spacer between cells, that is outside the border */
     margin: 2px 0px 2px 0px;
 }
 
 div.code_cell {
     background-color: white;
 }
 /* any special styling for code cells that are currently running goes here */
 div.code_cell.running {
 }
 
 div.prompt {
     /* This needs to be wide enough for 3 digit prompt numbers: In[100]: */
     width: 11ex;
     /* This 0.4em is tuned to match the padding on the CodeMirror editor. */
     padding: 0.4em;
     margin: 0px;
     font-family: monospace;
     text-align:right;
 }
 
 div.input {
     page-break-inside: avoid;
 }
 
 /* input_area and input_prompt must match in top border and margin for alignment */
 div.input_area {
     color: black;
     border: 1px solid #ddd;
     border-radius: 3px;
     background: #f7f7f7;
 }
 
 div.input_prompt {
     color: navy;
     border-top: 1px solid transparent;
 }
 
 div.output {
     /* This is a spacer between the input and output of each cell */
     margin-top: 5px;
 }
 
 div.output_prompt {
     color: darkred;
 }
 
 /* This class is the outer container of all output sections. */
 div.output_area {
     padding: 0px;
     page-break-inside: avoid;
 }
 
 /* This class is for the output subarea inside the output_area and after
    the prompt div. */
 div.output_subarea {
     padding: 0.4em 6.1em 0.4em 0.4em;
 }
 
 /* The rest of the output_* classes are for special styling of the different
    output types */
 
 /* all text output has this class: */
 div.output_text {
     text-align: left;
     color: black;
     font-family: monospace;
 }
 
 /* stdout/stderr are 'text' as well as 'stream', but pyout/pyerr are *not* streams */
 div.output_stream {
     padding-top: 0.0em;
     padding-bottom: 0.0em;
 }
 div.output_stdout {
 }
 div.output_stderr {
     background: #fdd; /* very light red background for stderr */
 }
 
 div.output_latex {
     text-align: left;
     color: black;
 }
 
 div.output_html {
 }
 
 div.output_png {
 }
 
 div.output_jpeg {
 }
 
 div.text_cell {
     background-color: white;
 }
 
 div.text_cell_input {
     color: black;
 }
 
 div.text_cell_render {
     font-family: "Helvetica Neue", Arial, Helvetica, Geneva, sans-serif;
     outline: none;
     resize: none;
     width:  inherit;
     border-style: none;
     padding: 5px;
     color: black;
 }
 
 .CodeMirror {
     line-height: 1.231;  /* Changed from 1em to our global default */
 }
 
 .CodeMirror-scroll {
     height: auto;     /* Changed to auto to autogrow */
     /*  The CodeMirror docs are a bit fuzzy on if overflow-y should be hidden or visible.*/
     /*  We have found that if it is visible, vertical scrollbars appear with font size changes.*/
     overflow-y: hidden;
     overflow-x: auto; /* Changed from auto to remove scrollbar */
 }
 
 /* CSS font colors for translated ANSI colors. */
 
 
 .ansiblack {color: black;}
 .ansired {color: darkred;}
 .ansigreen {color: darkgreen;}
 .ansiyellow {color: brown;}
 .ansiblue {color: darkblue;}
 .ansipurple {color: darkviolet;}
 .ansicyan {color: steelblue;}
 .ansigrey {color: grey;}
 .ansibold {font-weight: bold;}
 
 .completions , .tooltip{
     position: absolute;
     z-index: 10;
     overflow: auto;
     border: 1px solid black;
 }
 
 .completions select {
     background: white;
     outline: none;
     border: none;
     padding: 0px;
     margin: 0px;
     font-family: monospace;
 }
 
 @-moz-keyframes fadeIn {
     from {opacity:0;}
     to {opacity:1;}
 }
 
 @-webkit-keyframes fadeIn {
     from {opacity:0;}
     to {opacity:1;}
 }
 
 @keyframes fadeIn {
     from {opacity:0;}
     to {opacity:1;}
 }
 
 /*"close" "expand" and "Open in pager button" of
 /* the tooltip*/
 .tooltip a{
     float:right;
 }
 
 /*properties of tooltip after "expand"*/
 .bigtooltip{
     height:30%;
 }
 
 /*properties of tooltip before "expand"*/
 .smalltooltip{
     text-overflow: ellipsis;
     overflow: hidden;
     height:15%;
 }
 
 .tooltip{
     /*transition when "expand"ing tooltip */
     -webkit-transition-property: height;
     -webkit-transition-duration: 1s;
     -moz-transition-property: height;
     -moz-transition-duration: 1s;
     transition-property: height;
     transition-duration: 1s;
     max-width:700px;
     border-radius: 0px 10px 10px 10px;
     box-shadow: 3px 3px 5px #999;
     /*fade-in animation when inserted*/
     -webkit-animation: fadeIn 200ms;
     -moz-animation: fadeIn 200ms;
     animation: fadeIn 200ms;
     vertical-align: middle;
     background: #FDFDD8;
     outline: none;
     padding: 3px;
     margin: 0px;
     font-family: monospace;
     min-height:50px;
 }
 
+.completions p{
+    background: #DDF;
+    /*outline: none;
+    padding: 0px;*/
+    border-bottom: black solid 1px;
+    padding: 1px;
+    font-family: monospace;
+}
+
 @media print {
     body { overflow: visible !important; }
     .ui-widget-content { border: 0px; }
 }
 
 .shortcut_key {
     display: inline-block;
     width: 13ex;
     text-align: right;
     font-family: monospace;
 }
 
 .shortcut_descr {
 }
 
 /* Word-wrap output correctly.  This is the CSS3 spelling, though Firefox seems
    to not honor it correctly.  Webkit browsers (Chrome, rekonq, Safari) do.
  */
 pre, code, kbd, samp { white-space: pre-wrap; }

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

@@ -1,675 +1,733 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.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // CodeCell
 //============================================================================
 
 var IPython = (function (IPython) {
 
     var utils = IPython.utils;
 
     var CodeCell = function (notebook) {
         this.code_mirror = null;
         this.input_prompt_number = ' ';
         this.is_completing = false;
         this.completion_cursor = null;
         this.outputs = [];
         this.collapsed = false;
         IPython.Cell.apply(this, arguments);
     };
 
 
     CodeCell.prototype = new IPython.Cell();
 
 
     CodeCell.prototype.create_element = function () {
         var cell =  $('<div></div>').addClass('cell border-box-sizing code_cell vbox');
         cell.attr('tabindex','2');
         var input = $('<div></div>').addClass('input hbox');
         input.append($('<div/>').addClass('prompt input_prompt'));
         var input_area = $('<div/>').addClass('input_area box-flex1');
         this.code_mirror = CodeMirror(input_area.get(0), {
             indentUnit : 4,
             mode: 'python',
             theme: 'ipython',
             readOnly: this.read_only,
             onKeyEvent: $.proxy(this.handle_codemirror_keyevent,this)
         });
         input.append(input_area);
         var output = $('<div></div>').addClass('output vbox');
         cell.append(input).append(output);
         this.element = cell;
         this.collapse();
     };
 
     //TODO, try to diminish the number of parameters.
     CodeCell.prototype.request_tooltip_after_time = function (pre_cursor,time,that){
         if (pre_cursor === "" || pre_cursor === "(" ) {
             // don't do anything if line beggin with '(' or is empty
         } else {
             // Will set a timer to request tooltip in `time`
             that.tooltip_timeout = setTimeout(function(){
                     IPython.notebook.request_tool_tip(that, pre_cursor)
                 },time);
         }
     };
 
     CodeCell.prototype.handle_codemirror_keyevent = function (editor, event) {
         // This method gets called in CodeMirror's onKeyDown/onKeyPress
         // handlers and is used to provide custom key handling. Its return
         // value is used to determine if CodeMirror should ignore the event:
         // true = ignore, false = don't ignore.
 
         // note that we are comparing and setting the time to wait at each key press.
         // a better wqy might be to generate a new function on each time change and
         // assign it to CodeCell.prototype.request_tooltip_after_time
         tooltip_wait_time = this.notebook.time_before_tooltip;
         tooltip_on_tab    = this.notebook.tooltip_on_tab;
         var that = this;
         // whatever key is pressed, first, cancel the tooltip request before
         // they are sent, and remove tooltip if any
         if(event.type === 'keydown' && this.tooltip_timeout != null){
             CodeCell.prototype.remove_and_cancell_tooltip(that.tooltip_timeout);
             that.tooltip_timeout=null;
         }
 
         if (event.keyCode === 13 && (event.shiftKey || event.ctrlKey)) {
             // Always ignore shift-enter in CodeMirror as we handle it.
             return true;
         }else if (event.which === 40 && event.type === 'keypress' && tooltip_wait_time >= 0) {
             // triger aon keypress (!) otherwise inconsistent event.which depending on plateform
             // browser and keyboard layout !
             // Pressing '(' , request tooltip, don't forget to reappend it
             var cursor = editor.getCursor();
             var pre_cursor = editor.getRange({line:cursor.line,ch:0},cursor).trim()+'(';
             CodeCell.prototype.request_tooltip_after_time(pre_cursor,tooltip_wait_time,that);
         } else if (event.keyCode === 9 && event.type == 'keydown') {
             // Tab completion.
             var cur = editor.getCursor();
             //Do not trim here because of tooltip
             var pre_cursor = editor.getRange({line:cur.line,ch:0},cur);
             if (pre_cursor.trim() === "") {
                 // Don't autocomplete if the part of the line before the cursor
                 // is empty.  In this case, let CodeMirror handle indentation.
                 return false;
             } else if ((pre_cursor.substr(-1) === "("|| pre_cursor.substr(-1) === " ") && tooltip_on_tab ) {
                 CodeCell.prototype.request_tooltip_after_time(pre_cursor,0,that);
             } else {
                 pre_cursor.trim();
                 // Autocomplete the current line.
                 event.stop();
                 var line = editor.getLine(cur.line);
                 this.is_completing = true;
                 this.completion_cursor = cur;
                 IPython.notebook.complete_cell(this, line, cur.ch);
                 return true;
             }
         } else if (event.keyCode === 8 && event.type == 'keydown') {
             // If backspace and the line ends with 4 spaces, remove them.
             var cur = editor.getCursor();
             var line = editor.getLine(cur.line);
             var ending = line.slice(-4);
             if (ending === '    ') {
                 editor.replaceRange('',
                     {line: cur.line, ch: cur.ch-4},
                     {line: cur.line, ch: cur.ch}
                 );
                 event.stop();
                 return true;
             } else {
                 return false;
             }
         } else if (event.keyCode === 76 && event.ctrlKey && event.shiftKey
                    && event.type == 'keydown') {
             // toggle line numbers with Ctrl-Shift-L
             this.toggle_line_numbers();
         }
         else {
             // keypress/keyup also trigger on TAB press, and we don't want to
             // use those to disable tab completion.
             if (this.is_completing && event.keyCode !== 9) {
                 var ed_cur = editor.getCursor();
                 var cc_cur = this.completion_cursor;
                 if (ed_cur.line !== cc_cur.line || ed_cur.ch !== cc_cur.ch) {
                     this.is_completing = false;
                     this.completion_cursor = null;
                 }
             }
             return false;
         };
         return false;
     };
 
     CodeCell.prototype.remove_and_cancell_tooltip = function(timeout)
     {
         // note that we don't handle closing directly inside the calltip
         // as in the completer, because it is not focusable, so won't
         // get the event.
         clearTimeout(timeout);
         $('#tooltip').remove();
     }
 
     CodeCell.prototype.finish_tooltip = function (reply) {
         defstring=reply.definition;
         docstring=reply.docstring;
         if(docstring == null){docstring="<empty docstring>"};
         name=reply.name;
 
         var that = this;
         var tooltip = $('<div/>').attr('id', 'tooltip').addClass('tooltip');
         // remove to have the tooltip not Limited in X and Y
         tooltip.addClass('smalltooltip');
         var pre=$('<pre/>').html(utils.fixConsole(docstring));
         var expandlink=$('<a/>').attr('href',"#");
             expandlink.addClass("ui-corner-all"); //rounded corner
             expandlink.attr('role',"button");
             //expandlink.addClass('ui-button');
             //expandlink.addClass('ui-state-default');
         var expandspan=$('<span/>').text('Expand');
             expandspan.addClass('ui-icon');
             expandspan.addClass('ui-icon-plus');
         expandlink.append(expandspan);
         expandlink.attr('id','expanbutton');
         expandlink.click(function(){
             tooltip.removeClass('smalltooltip');
             tooltip.addClass('bigtooltip');
             $('#expanbutton').remove();
             setTimeout(function(){that.code_mirror.focus();}, 50);
         });
         var morelink=$('<a/>').attr('href',"#");
             morelink.attr('role',"button");
             morelink.addClass('ui-button');
             //morelink.addClass("ui-corner-all"); //rounded corner
             //morelink.addClass('ui-state-default');
         var morespan=$('<span/>').text('Open in Pager');
             morespan.addClass('ui-icon');
             morespan.addClass('ui-icon-arrowstop-l-n');
         morelink.append(morespan);
         morelink.click(function(){
             var msg_id = IPython.notebook.kernel.execute(name+"?");
             IPython.notebook.msg_cell_map[msg_id] = IPython.notebook.selected_cell().cell_id;
             CodeCell.prototype.remove_and_cancell_tooltip(that.tooltip_timeout);
             setTimeout(function(){that.code_mirror.focus();}, 50);
         });
 
         var closelink=$('<a/>').attr('href',"#");
             closelink.attr('role',"button");
             closelink.addClass('ui-button');
             //closelink.addClass("ui-corner-all"); //rounded corner
             //closelink.adClass('ui-state-default'); // grey background and blue cross
         var closespan=$('<span/>').text('Close');
             closespan.addClass('ui-icon');
             closespan.addClass('ui-icon-close');
         closelink.append(closespan);
         closelink.click(function(){
             CodeCell.prototype.remove_and_cancell_tooltip(that.tooltip_timeout);
             setTimeout(function(){that.code_mirror.focus();}, 50);
             });
         //construct the tooltip
         tooltip.append(closelink);
         tooltip.append(expandlink);
         tooltip.append(morelink);
         if(defstring){
             defstring_html= $('<pre/>').html(utils.fixConsole(defstring));
             tooltip.append(defstring_html);
         }
         tooltip.append(pre);
         var pos = this.code_mirror.cursorCoords();
         tooltip.css('left',pos.x+'px');
         tooltip.css('top',pos.yBot+'px');
         $('body').append(tooltip);
 
         // issues with cross-closing if multiple tooltip in less than 5sec
         // keep it comented for now
         // setTimeout(CodeCell.prototype.remove_and_cancell_tooltip, 5000);
     };
 
-
+    // As you type completer
     CodeCell.prototype.finish_completing = function (matched_text, matches) {
-        // console.log("Got matches", matched_text, matches);
+
+        // smart completion, sort kwarg ending with '='
         var newm = new Array();
         if(this.notebook.smart_completer)
         {
             kwargs = new Array();
             other = new Array();
             for(var i=0;i<matches.length; ++i){
                 if(matches[i].substr(-1) === '='){
                     kwargs.push(matches[i]);
                 }else{other.push(matches[i]);}
             }
             newm = kwargs.concat(other);
             matches=newm;
         }
+        // end sort kwargs
+
         if (!this.is_completing || matches.length === 0) {return;}
 
         //try to check if the user is typing tab at least twice after a word
         // and completion is "done"
         fallback_on_tooltip_after=2
         if(matches.length==1 && matched_text === matches[0])
         {
             if(this.npressed >fallback_on_tooltip_after  && this.prevmatch==matched_text)
             {
                 console.log('Ok, you really want to complete after pressing tab '+this.npressed+' times !');
                 console.log('You should understand that there is no (more) completion for that !');
                 console.log("I'll show you the tooltip, will you stop bothering me ?");
                 this.request_tooltip_after_time(matched_text+'(',0,this);
                 return;
             }
             this.prevmatch=matched_text
             this.npressed=this.npressed+1;
         }
         else
         {
             this.prevmatch="";
             this.npressed=0;
         }
+        // end fallback on tooltip
 
+        // Real completion logic start here
         var that = this;
         var cur = this.completion_cursor;
+        var done = false;
+
+        // call to dismmiss the completer
+        var close = function () {
+            if (done) return;
+            done = true;
+            if (complete!=undefined)
+            {complete.remove();}
+            that.is_completing = false;
+            that.completion_cursor = null;
+        };
 
+        // insert the given text and exit the completer
         var insert = function (selected_text) {
             that.code_mirror.replaceRange(
                 selected_text,
                 {line: cur.line, ch: (cur.ch-matched_text.length)},
                 {line: cur.line, ch: cur.ch}
             );
+            event.stopPropagation();
+            event.preventDefault();
+            close();
+            setTimeout(function(){that.code_mirror.focus();}, 50);
         };
 
+        // insert the curent highlited selection and exit
+        var pick = function () {
+            insert(select.val()[0]);
+        };
+
+        // if only one match, complete to it, don't ask user
         if (matches.length === 1) {
             insert(matches[0]);
-            setTimeout(function(){that.code_mirror.focus();}, 50);
             return;
         };
 
-        var complete = $('<div/>').addClass('completions');
-        var select = $('<select/>').attr('multiple','true');
+
+        // Define function to clear the completer, refill it with the new
+        // matches, update the pseuso typing field. Note that this is case
+        // insensitive for now
+        var complete_with = function(matches,typed_text)
+        {
+            //clear the previous completion if any
+            if (matches.length < 1) {
+                insert(typed_text);
+            }
+            complete.children().children().remove();
+            $('#asyoutype').text(typed_text);
+            select=$('#asyoutypeselect');
         for (var i=0; i<matches.length; ++i) {
-            select.append($('<option/>').text(matches[i]));
+                    select.append($('<option/>').html(matches[i]));
         }
         select.children().first().attr('selected','true');
+        }
+
+        // create html for completer
+        var complete = $('<div/>').addClass('completions');
+            complete.attr('id','complete');
+        complete.append($('<p/>').attr('id', 'asyoutype').html(matched_text));//pseudo input field
+
+        var select = $('<select/>').attr('multiple','true');
+            select.attr('id', 'asyoutypeselect')
         select.attr('size',Math.min(10,matches.length));
         var pos = this.code_mirror.cursorCoords();
+
+        // TODO: I propose to remove enough horizontal pixel
+        // to align the text later
         complete.css('left',pos.x+'px');
         complete.css('top',pos.yBot+'px');
         complete.append(select);
 
         $('body').append(complete);
-        var done = false;
 
-        var close = function () {
-            if (done) return;
-            done = true;
-            complete.remove();
-            that.is_completing = false;
-            that.completion_cursor = null;
-        };
+        //do a first actual completion
+        complete_with(matches,matched_text);
 
-        var pick = function () {
-            insert(select.val()[0]);
-            close();
-            setTimeout(function(){that.code_mirror.focus();}, 50);
-        };
-
-        select.blur(close);
+        // Give focus to select, and make it filter the match as the user type
+        // by filtering the previous matches
+        typed_characters = "";
         select.keydown(function (event) {
             var code = event.which;
             if (code === 13 || code === 32) {
                 // Pressing SPACE or ENTER will cause a pick
                 event.stopPropagation();
                 event.preventDefault();
                 pick();
             } else if (code === 38 || code === 40) {
                 // We don't want the document keydown handler to handle UP/DOWN,
                 // but we want the default action.
                 event.stopPropagation();
+            } else if (code>64 && code <90 || code==8){
+                // issues with _-.. on chrome at least
+                if(code != 8)
+                {
+                    var newchar = String.fromCharCode(code).toLowerCase();
+                    typed_characters=typed_characters+newchar;
             } else {
-                // All other key presses exit completion.
-                event.stopPropagation();
-                event.preventDefault();
-                close();
-                that.code_mirror.focus();
+                    // 8 is backspace remove 1 char cancel if
+                    // user have erase everything, otherwise
+                    // decrease what we filter with
+                    if (typed_characters.length <= 0)
+                    {
+                        insert(matched_text)
+                    }
+                    typed_characters=typed_characters.substr(0,typed_characters.length-1);
+                }
+                re = new RegExp("^"+"\%?"+matched_text+typed_characters,"i");
+                filterd= matches.filter(function(x){return re.test(x)});
+                complete_with(filterd,matched_text+typed_characters);
+            } else {
+                // abort with what the user have pressed until now
+                console.log('aborting with keycode : '+code);
+                insert(matched_text+typed_characters);
             }
         });
         // Double click also causes a pick.
+        // and bind the last actions.
         select.dblclick(pick);
+        select.blur(close);
         select.focus();
     };
 
     CodeCell.prototype.toggle_line_numbers = function () {
         if (this.code_mirror.getOption('lineNumbers') == false) {
             this.code_mirror.setOption('lineNumbers', true);
         } else {
             this.code_mirror.setOption('lineNumbers', false);
         }
         this.code_mirror.refresh();
     };
 
     CodeCell.prototype.select = function () {
         IPython.Cell.prototype.select.apply(this);
         // Todo: this dance is needed because as of CodeMirror 2.12, focus is
         // not causing the cursor to blink if the editor is empty initially.
         // While this seems to fix the issue, this should be fixed
         // in CodeMirror proper.
         var s = this.code_mirror.getValue();
         this.code_mirror.focus();
         if (s === '') this.code_mirror.setValue('');
     };
 
 
     CodeCell.prototype.select_all = function () {
         var start = {line: 0, ch: 0};
         var nlines = this.code_mirror.lineCount();
         var last_line = this.code_mirror.getLine(nlines-1);
         var end = {line: nlines-1, ch: last_line.length};
         this.code_mirror.setSelection(start, end);
     };
 
 
     CodeCell.prototype.append_output = function (json) {
         this.expand();
         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);
     };
 
 
     CodeCell.prototype.create_output_area = function () {
         var oa = $("<div/>").addClass("hbox output_area");
         oa.append($('<div/>').addClass('prompt'));
         return oa;
     };
 
 
     CodeCell.prototype.append_pyout = function (json) {
         n = json.prompt_number || ' ';
         var toinsert = this.create_output_area();
         toinsert.find('div.prompt').addClass('output_prompt').html('Out[' + n + ']:');
         this.append_mime_type(json, toinsert);
         this.element.find('div.output').append(toinsert);
         // If we just output latex, typeset it.
         if ((json.latex !== undefined) || (json.html !== undefined)) {
             MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
         };
     };
 
 
     CodeCell.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.element.find('div.output').append(toinsert);
         };
     };
 
 
     CodeCell.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 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
                 this.element.find('div.'+subclass).last().find('pre').append(json.text);
                 return;
             }
         }
         
         // If we got here, attach a new div
         var toinsert = this.create_output_area();
         this.append_text(json.text, toinsert, "output_stream "+subclass);
         this.element.find('div.output').append(toinsert);
     };
 
 
     CodeCell.prototype.append_display_data = function (json) {
         var toinsert = this.create_output_area();
         this.append_mime_type(json, toinsert);
         this.element.find('div.output').append(toinsert);
         // If we just output latex, typeset it.
         if ( (json.latex !== undefined) || (json.html !== undefined) ) {
             MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
         };
     };
 
 
     CodeCell.prototype.append_mime_type = function (json, element) {
         if (json.html !== undefined) {
             this.append_html(json.html, element);
         } else if (json.latex !== undefined) {
             this.append_latex(json.latex, element);
         } else if (json.svg !== undefined) {
             this.append_svg(json.svg, element);
         } else if (json.png !== undefined) {
             this.append_png(json.png, element);
         } else if (json.jpeg !== undefined) {
             this.append_jpeg(json.jpeg, element);
         } else if (json.text !== undefined) {
             this.append_text(json.text, element);
         };
     };
 
 
     CodeCell.prototype.append_html = function (html, element) {
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_html rendered_html");
         toinsert.append(html);
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.append_text = function (data, element, extra_class) {
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_text");
         if (extra_class){
             toinsert.addClass(extra_class);
         }
         toinsert.append($("<pre/>").html(data));
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.append_svg = function (svg, element) {
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_svg");
         toinsert.append(svg);
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.append_png = function (png, element) {
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_png");
         toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.append_jpeg = function (jpeg, element) {
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_jpeg");
         toinsert.append($("<img/>").attr('src','data:image/jpeg;base64,'+jpeg));
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.append_latex = function (latex, element) {
         // This method cannot do the typesetting because the latex first has to
         // be on the page.
         var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_latex");
         toinsert.append(latex);
         element.append(toinsert);
     };
 
 
     CodeCell.prototype.clear_output = function (stdout, stderr, other) {
         var output_div = this.element.find("div.output");
         if (stdout && stderr && other){
             // clear all, no need for logic
             output_div.html("");
             this.outputs = [];
             return;
         }
         // remove html output
         // each output_subarea that has an identifying class is in an output_area
         // which is the element to be removed.
         if (stdout){
             output_div.find("div.output_stdout").parent().remove();
         }
         if (stderr){
             output_div.find("div.output_stderr").parent().remove();
         }
         if (other){
             output_div.find("div.output_subarea").not("div.output_stderr").not("div.output_stdout").parent().remove();
         }
         
         // remove cleared outputs from JSON list:
         for (var i = this.outputs.length - 1; i >= 0; i--){
             var out = this.outputs[i];
             var output_type = out.output_type;
             if (output_type == "display_data" && other){
                 this.outputs.splice(i,1);
             }else if (output_type == "stream"){
                 if (stdout && out.stream == "stdout"){
                     this.outputs.splice(i,1);
                 }else if (stderr && out.stream == "stderr"){
                     this.outputs.splice(i,1);
                 }
             }
         }
     };
 
 
     CodeCell.prototype.clear_input = function () {
         this.code_mirror.setValue('');
     };
 
 
     CodeCell.prototype.collapse = function () {
         if (!this.collapsed) {
             this.element.find('div.output').hide();
             this.collapsed = true;
         };
     };
 
 
     CodeCell.prototype.expand = function () {
         if (this.collapsed) {
             this.element.find('div.output').show();
             this.collapsed = false;
         };
     };
 
 
     CodeCell.prototype.toggle_output = function () {
         if (this.collapsed) {
             this.expand();
         } else {
             this.collapse();
         };
     };
 
     CodeCell.prototype.set_input_prompt = function (number) {
         var n = number || '&nbsp;';
         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) {
         console.log('Import from JSON:', data);
         if (data.cell_type === 'code') {
             if (data.input !== undefined) {
                 this.set_code(data.input);
             }
             if (data.prompt_number !== undefined) {
                 this.set_input_prompt(data.prompt_number);
             } else {
                 this.set_input_prompt();
             };
             var len = data.outputs.length;
             for (var i=0; i<len; i++) {
                 this.append_output(data.outputs[i]);
             };
             if (data.collapsed !== undefined) {
                 if (data.collapsed) {
                     this.collapse();
                 };
             };
         };
     };
 
 
     CodeCell.prototype.toJSON = function () {
         var data = {};
         data.input = this.get_code();
         data.cell_type = 'code';
         if (this.input_prompt_number !== ' ') {
             data.prompt_number = this.input_prompt_number;
         };
         var outputs = [];
         var len = this.outputs.length;
         for (var i=0; i<len; i++) {
             outputs[i] = this.outputs[i];
         };
         data.outputs = outputs;
         data.language = 'python';
         data.collapsed = this.collapsed;
         // console.log('Export to JSON:',data);
         return data;
     };
 
 
     IPython.CodeCell = CodeCell;
 
     return IPython;
 }(IPython));