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1 | 1 | //---------------------------------------------------------------------------- |
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2 | 2 | // Copyright (C) 2008-2012 The IPython Development Team |
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3 | 3 | // |
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4 | 4 | // Distributed under the terms of the BSD License. The full license is in |
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5 | 5 | // the file COPYING, distributed as part of this software. |
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6 | 6 | //---------------------------------------------------------------------------- |
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7 | 7 | |
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8 | 8 | //============================================================================ |
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9 | 9 | // TextCell |
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10 | 10 | //============================================================================ |
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11 | 11 | |
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12 | 12 | |
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13 | 13 | |
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14 | 14 | /** |
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15 | 15 | A module that allow to create different type of Text Cell |
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16 | 16 | @module IPython |
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17 | 17 | @namespace IPython |
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18 | 18 | */ |
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19 | 19 | var IPython = (function (IPython) { |
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20 | 20 | "use strict"; |
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21 | 21 | |
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22 | 22 | // TextCell base class |
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23 | 23 | var key = IPython.utils.keycodes; |
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24 | 24 | |
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25 | 25 | /** |
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26 | 26 | * Construct a new TextCell, codemirror mode is by default 'htmlmixed', and cell type is 'text' |
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27 | 27 | * cell start as not redered. |
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28 | 28 | * |
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29 | 29 | * @class TextCell |
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30 | 30 | * @constructor TextCell |
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31 | 31 | * @extend IPython.Cell |
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32 | 32 | * @param {object|undefined} [options] |
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33 | 33 | * @param [options.cm_config] {object} config to pass to CodeMirror, will extend/overwrite default config |
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34 | 34 | * @param [options.placeholder] {string} default string to use when souce in empty for rendering (only use in some TextCell subclass) |
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35 | 35 | */ |
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36 | 36 | var TextCell = function (options) { |
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37 | 37 | // in all TextCell/Cell subclasses |
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38 | 38 | // do not assign most of members here, just pass it down |
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39 | 39 | // in the options dict potentially overwriting what you wish. |
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40 | 40 | // they will be assigned in the base class. |
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41 | 41 | |
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42 | 42 | // we cannot put this as a class key as it has handle to "this". |
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43 | 43 | var cm_overwrite_options = { |
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44 | 44 | onKeyEvent: $.proxy(this.handle_codemirror_keyevent,this) |
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45 | 45 | }; |
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46 | 46 | |
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47 | 47 | options = this.mergeopt(TextCell,options,{cm_config:cm_overwrite_options}); |
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48 | 48 | |
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49 | 49 | IPython.Cell.apply(this, [options]); |
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50 | 50 | |
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51 | 51 | |
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52 | 52 | this.rendered = false; |
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53 | 53 | this.cell_type = this.cell_type || 'text'; |
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54 | 54 | }; |
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55 | 55 | |
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56 | 56 | TextCell.prototype = new IPython.Cell(); |
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57 | 57 | |
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58 | 58 | TextCell.options_default = { |
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59 | 59 | cm_config : { |
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60 | 60 | extraKeys: {"Tab": "indentMore","Shift-Tab" : "indentLess"}, |
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61 | 61 | mode: 'htmlmixed', |
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62 | 62 | lineWrapping : true, |
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63 | 63 | } |
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64 | 64 | }; |
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65 | 65 | |
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66 | 66 | |
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67 | 67 | |
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68 | 68 | /** |
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69 | 69 | * Create the DOM element of the TextCell |
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70 | 70 | * @method create_element |
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71 | 71 | * @private |
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72 | 72 | */ |
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73 | 73 | TextCell.prototype.create_element = function () { |
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74 | 74 | IPython.Cell.prototype.create_element.apply(this, arguments); |
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75 | 75 | var cell = $("<div>").addClass('cell text_cell border-box-sizing'); |
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76 | 76 | cell.attr('tabindex','2'); |
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77 | 77 | |
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78 | 78 | this.celltoolbar = new IPython.CellToolbar(this); |
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79 | 79 | cell.append(this.celltoolbar.element); |
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80 | 80 | |
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81 | 81 | var input_area = $('<div/>').addClass('text_cell_input border-box-sizing'); |
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82 | 82 | this.code_mirror = CodeMirror(input_area.get(0), this.cm_config); |
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83 | 83 | |
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84 | 84 | // The tabindex=-1 makes this div focusable. |
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85 | 85 | var render_area = $('<div/>').addClass('text_cell_render border-box-sizing'). |
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86 | 86 | addClass('rendered_html').attr('tabindex','-1'); |
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87 | 87 | cell.append(input_area).append(render_area); |
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88 | 88 | this.element = cell; |
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89 | 89 | }; |
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90 | 90 | |
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91 | 91 | |
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92 | 92 | /** |
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93 | 93 | * Bind the DOM evet to cell actions |
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94 | 94 | * Need to be called after TextCell.create_element |
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95 | 95 | * @private |
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96 | 96 | * @method bind_event |
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97 | 97 | */ |
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98 | 98 | TextCell.prototype.bind_events = function () { |
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99 | 99 | IPython.Cell.prototype.bind_events.apply(this); |
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100 | 100 | var that = this; |
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101 | 101 | this.element.keydown(function (event) { |
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102 | 102 | if (event.which === 13 && !event.shiftKey) { |
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103 | 103 | if (that.rendered) { |
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104 | 104 | that.edit(); |
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105 | 105 | return false; |
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106 | 106 | }; |
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107 | 107 | }; |
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108 | 108 | }); |
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109 | 109 | this.element.dblclick(function () { |
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110 | 110 | that.edit(); |
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111 | 111 | }); |
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112 | 112 | }; |
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113 | 113 | |
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114 | 114 | /** |
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115 | 115 | * This method gets called in CodeMirror's onKeyDown/onKeyPress |
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116 | 116 | * handlers and is used to provide custom key handling. |
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117 | 117 | * |
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118 | 118 | * Subclass should override this method to have custom handeling |
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119 | 119 | * |
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120 | 120 | * @method handle_codemirror_keyevent |
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121 | 121 | * @param {CodeMirror} editor - The codemirror instance bound to the cell |
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122 | 122 | * @param {event} event - |
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123 | 123 | * @return {Boolean} `true` if CodeMirror should ignore the event, `false` Otherwise |
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124 | 124 | */ |
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125 | 125 | TextCell.prototype.handle_codemirror_keyevent = function (editor, event) { |
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126 | 126 | |
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127 | 127 | if (event.keyCode === 13 && (event.shiftKey || event.ctrlKey)) { |
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128 | 128 | // Always ignore shift-enter in CodeMirror as we handle it. |
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129 | 129 | return true; |
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130 | 130 | } |
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131 | 131 | return false; |
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132 | 132 | }; |
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133 | 133 | |
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134 | 134 | /** |
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135 | 135 | * Select the current cell and trigger 'focus' |
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136 | 136 | * @method select |
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137 | 137 | */ |
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138 | 138 | TextCell.prototype.select = function () { |
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139 | 139 | IPython.Cell.prototype.select.apply(this); |
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140 | 140 | var output = this.element.find("div.text_cell_render"); |
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141 | 141 | output.trigger('focus'); |
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142 | 142 | }; |
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143 | 143 | |
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144 | 144 | /** |
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145 | 145 | * unselect the current cell and `render` it |
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146 | 146 | * @method unselect |
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147 | 147 | */ |
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148 | 148 | TextCell.prototype.unselect = function() { |
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149 | 149 | // render on selection of another cell |
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150 | 150 | this.render(); |
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151 | 151 | IPython.Cell.prototype.unselect.apply(this); |
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152 | 152 | }; |
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153 | 153 | |
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154 | 154 | /** |
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155 | 155 | * |
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156 | 156 | * put the current cell in edition mode |
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157 | 157 | * @method edit |
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158 | 158 | */ |
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159 | 159 | TextCell.prototype.edit = function () { |
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160 | 160 | if ( this.read_only ) return; |
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161 | 161 | if (this.rendered === true) { |
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162 | 162 | var text_cell = this.element; |
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163 | 163 | var output = text_cell.find("div.text_cell_render"); |
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164 | 164 | output.hide(); |
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165 | 165 | text_cell.find('div.text_cell_input').show(); |
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166 | 166 | this.code_mirror.refresh(); |
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167 | 167 | this.code_mirror.focus(); |
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168 | 168 | // We used to need an additional refresh() after the focus, but |
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169 | 169 | // it appears that this has been fixed in CM. This bug would show |
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170 | 170 | // up on FF when a newly loaded markdown cell was edited. |
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171 | 171 | this.rendered = false; |
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172 | 172 | if (this.get_text() === this.placeholder) { |
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173 | 173 | this.set_text(''); |
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174 | 174 | this.refresh(); |
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175 | 175 | } |
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176 | 176 | } |
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177 | 177 | }; |
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178 | 178 | |
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179 | 179 | |
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180 | 180 | /** |
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181 | 181 | * Empty, Subclasses must define render. |
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182 | 182 | * @method render |
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183 | 183 | */ |
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184 | 184 | TextCell.prototype.render = function () {}; |
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185 | 185 | |
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186 | 186 | |
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187 | 187 | /** |
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188 | 188 | * setter: {{#crossLink "TextCell/set_text"}}{{/crossLink}} |
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189 | 189 | * @method get_text |
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190 | 190 | * @retrun {string} CodeMirror current text value |
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191 | 191 | */ |
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192 | 192 | TextCell.prototype.get_text = function() { |
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193 | 193 | return this.code_mirror.getValue(); |
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194 | 194 | }; |
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195 | 195 | |
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196 | 196 | /** |
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197 | 197 | * @param {string} text - Codemiror text value |
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198 | 198 | * @see TextCell#get_text |
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199 | 199 | * @method set_text |
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200 | 200 | * */ |
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201 | 201 | TextCell.prototype.set_text = function(text) { |
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202 | 202 | this.code_mirror.setValue(text); |
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203 | 203 | this.code_mirror.refresh(); |
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204 | 204 | }; |
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205 | 205 | |
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206 | 206 | /** |
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207 | 207 | * setter :{{#crossLink "TextCell/set_rendered"}}{{/crossLink}} |
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208 | 208 | * @method get_rendered |
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209 | 209 | * @return {html} html of rendered element |
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210 | 210 | * */ |
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211 | 211 | TextCell.prototype.get_rendered = function() { |
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212 | 212 | return this.element.find('div.text_cell_render').html(); |
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213 | 213 | }; |
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214 | 214 | |
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215 | 215 | /** |
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216 | 216 | * @method set_rendered |
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217 | 217 | */ |
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218 | 218 | TextCell.prototype.set_rendered = function(text) { |
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219 | 219 | this.element.find('div.text_cell_render').html(text); |
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220 | 220 | }; |
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221 | 221 | |
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222 | 222 | /** |
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223 | 223 | * not deprecated, but implementation wrong |
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224 | 224 | * @method at_top |
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225 | 225 | * @deprecated |
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226 | 226 | * @return {Boolean} true is cell rendered, false otherwise |
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227 | 227 | * I doubt this is what it is supposed to do |
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228 | 228 | * this implementation is completly false |
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229 | 229 | */ |
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230 | 230 | TextCell.prototype.at_top = function () { |
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231 | 231 | if (this.rendered) { |
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232 | 232 | return true; |
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233 | 233 | } else { |
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234 | 234 | return false; |
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235 | 235 | } |
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236 | 236 | }; |
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237 | 237 | |
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238 | 238 | |
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239 | 239 | /** |
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240 | 240 | * not deprecated, but implementation wrong |
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241 | 241 | * @method at_bottom |
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242 | 242 | * @deprecated |
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243 | 243 | * @return {Boolean} true is cell rendered, false otherwise |
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244 | 244 | * I doubt this is what it is supposed to do |
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245 | 245 | * this implementation is completly false |
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246 | 246 | * */ |
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247 | 247 | TextCell.prototype.at_bottom = function () { |
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248 | 248 | if (this.rendered) { |
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249 | 249 | return true; |
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250 | 250 | } else { |
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251 | 251 | return false; |
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252 | 252 | } |
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253 | 253 | }; |
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254 | 254 | |
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255 | 255 | /** |
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256 | 256 | * Create Text cell from JSON |
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257 | 257 | * @param {json} data - JSON serialized text-cell |
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258 | 258 | * @method fromJSON |
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259 | 259 | */ |
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260 | 260 | TextCell.prototype.fromJSON = function (data) { |
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261 | 261 | IPython.Cell.prototype.fromJSON.apply(this, arguments); |
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262 | 262 | if (data.cell_type === this.cell_type) { |
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263 | 263 | if (data.source !== undefined) { |
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264 | 264 | this.set_text(data.source); |
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265 | 265 | // make this value the starting point, so that we can only undo |
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266 | 266 | // to this state, instead of a blank cell |
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267 | 267 | this.code_mirror.clearHistory(); |
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268 | 268 | this.set_rendered(data.rendered || ''); |
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269 | 269 | this.rendered = false; |
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270 | 270 | this.render(); |
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271 | 271 | } |
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272 | 272 | } |
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273 | 273 | }; |
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274 | 274 | |
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275 | 275 | /** Generate JSON from cell |
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276 | 276 | * @return {object} cell data serialised to json |
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277 | 277 | */ |
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278 | 278 | TextCell.prototype.toJSON = function () { |
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279 | 279 | var data = IPython.Cell.prototype.toJSON.apply(this); |
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280 | 280 | data.cell_type = this.cell_type; |
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281 | 281 | data.source = this.get_text(); |
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282 | 282 | return data; |
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283 | 283 | }; |
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284 | 284 | |
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285 | 285 | |
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286 | 286 | /** |
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287 | 287 | * @class MarkdownCell |
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288 | 288 | * @constructor MarkdownCell |
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289 | 289 | * @extends IPython.HTMLCell |
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290 | 290 | */ |
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291 | 291 | var MarkdownCell = function (options) { |
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292 | 292 | var options = options || {}; |
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293 | 293 | |
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294 | 294 | options = this.mergeopt(MarkdownCell,options); |
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295 | 295 | TextCell.apply(this, [options]); |
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296 | 296 | |
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297 | 297 | this.cell_type = 'markdown'; |
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298 | 298 | }; |
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299 | 299 | |
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300 | 300 | MarkdownCell.options_default = { |
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301 | 301 | cm_config: { |
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302 | 302 | mode: 'gfm' |
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303 | 303 | }, |
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304 | 304 | placeholder: "Type *Markdown* and LaTeX: $\\alpha^2$" |
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305 | 305 | } |
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306 | 306 | |
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307 | 307 | |
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308 | 308 | |
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309 | 309 | |
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310 | 310 | MarkdownCell.prototype = new TextCell(); |
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311 | 311 | |
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312 | 312 | /** |
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313 | 313 | * @method render |
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314 | 314 | */ |
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315 | 315 | MarkdownCell.prototype.render = function () { |
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316 | 316 | if (this.rendered === false) { |
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317 | 317 | var text = this.get_text(); |
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318 | 318 | if (text === "") { text = this.placeholder; } |
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319 | 319 | var text_math = IPython.mathjaxutils.remove_math(text); |
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320 | var text = text_math[0] | |
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321 | var math = text_math[1] | |
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320 | var text = text_math[0]; | |
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321 | var math = text_math[1]; | |
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322 | 322 | var html = marked.parser(marked.lexer(text)); |
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323 | 323 | html = $(IPython.mathjaxutils.replace_math(html, math)); |
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324 | 324 | // links in markdown cells should open in new tabs |
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325 | 325 | html.find("a[href]").attr("target", "_blank"); |
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326 | 326 | try { |
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327 | 327 | this.set_rendered(html); |
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328 | 328 | } catch (e) { |
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329 | 329 | console.log("Error running Javascript in Markdown:"); |
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330 | 330 | console.log(e); |
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331 | 331 | this.set_rendered($("<div/>").addClass("js-error").html( |
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332 | 332 | "Error rendering Markdown!<br/>" + e.toString()) |
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333 | 333 | ); |
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334 | 334 | } |
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335 | 335 | this.element.find('div.text_cell_input').hide(); |
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336 | 336 | this.element.find("div.text_cell_render").show(); |
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337 | 337 | this.typeset() |
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338 | 338 | this.rendered = true; |
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339 | 339 | } |
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340 | 340 | }; |
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341 | 341 | |
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342 | 342 | |
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343 | 343 | // RawCell |
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344 | 344 | |
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345 | 345 | /** |
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346 | 346 | * @class RawCell |
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347 | 347 | * @constructor RawCell |
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348 | 348 | * @extends IPython.TextCell |
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349 | 349 | */ |
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350 | 350 | var RawCell = function (options) { |
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351 | 351 | |
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352 | 352 | options = this.mergeopt(RawCell,options) |
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353 | 353 | TextCell.apply(this, [options]); |
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354 | 354 | |
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355 | 355 | this.cell_type = 'raw'; |
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356 | 356 | |
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357 | 357 | var that = this |
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358 | 358 | this.element.focusout( |
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359 | 359 | function() { that.auto_highlight(); } |
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360 | 360 | ); |
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361 | 361 | }; |
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362 | 362 | |
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363 | 363 | RawCell.options_default = { |
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364 | 364 | placeholder : "Type plain text and LaTeX: $\\alpha^2$" |
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365 | 365 | }; |
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366 | 366 | |
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367 | 367 | |
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368 | 368 | |
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369 | 369 | RawCell.prototype = new TextCell(); |
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370 | 370 | |
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371 | 371 | /** |
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372 | 372 | * Trigger autodetection of highlight scheme for current cell |
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373 | 373 | * @method auto_highlight |
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374 | 374 | */ |
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375 | 375 | RawCell.prototype.auto_highlight = function () { |
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376 | 376 | this._auto_highlight(IPython.config.raw_cell_highlight); |
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377 | 377 | }; |
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378 | 378 | |
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379 | 379 | /** @method render **/ |
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380 | 380 | RawCell.prototype.render = function () { |
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381 | 381 | this.rendered = true; |
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382 | 382 | this.edit(); |
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383 | 383 | }; |
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384 | 384 | |
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385 | 385 | |
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386 | 386 | /** @method handle_codemirror_keyevent **/ |
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387 | 387 | RawCell.prototype.handle_codemirror_keyevent = function (editor, event) { |
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388 | 388 | |
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389 | 389 | var that = this; |
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390 | 390 | if (event.which === key.UPARROW && event.type === 'keydown') { |
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391 | 391 | // If we are not at the top, let CM handle the up arrow and |
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392 | 392 | // prevent the global keydown handler from handling it. |
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393 | 393 | if (!that.at_top()) { |
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394 | 394 | event.stop(); |
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395 | 395 | return false; |
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396 | 396 | } else { |
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397 | 397 | return true; |
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398 | 398 | }; |
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399 | 399 | } else if (event.which === key.DOWNARROW && event.type === 'keydown') { |
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400 | 400 | // If we are not at the bottom, let CM handle the down arrow and |
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401 | 401 | // prevent the global keydown handler from handling it. |
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402 | 402 | if (!that.at_bottom()) { |
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403 | 403 | event.stop(); |
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404 | 404 | return false; |
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405 | 405 | } else { |
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406 | 406 | return true; |
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407 | 407 | }; |
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408 | 408 | }; |
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409 | 409 | return false; |
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410 | 410 | }; |
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411 | 411 | |
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412 | 412 | /** @method select **/ |
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413 | 413 | RawCell.prototype.select = function () { |
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414 | 414 | IPython.Cell.prototype.select.apply(this); |
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415 | 415 | this.code_mirror.refresh(); |
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416 | 416 | this.code_mirror.focus(); |
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417 | 417 | }; |
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418 | 418 | |
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419 | 419 | /** @method at_top **/ |
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420 | 420 | RawCell.prototype.at_top = function () { |
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421 | 421 | var cursor = this.code_mirror.getCursor(); |
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422 | 422 | if (cursor.line === 0 && cursor.ch === 0) { |
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423 | 423 | return true; |
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424 | 424 | } else { |
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425 | 425 | return false; |
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426 | 426 | } |
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427 | 427 | }; |
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428 | 428 | |
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429 | 429 | |
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430 | 430 | /** @method at_bottom **/ |
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431 | 431 | RawCell.prototype.at_bottom = function () { |
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432 | 432 | var cursor = this.code_mirror.getCursor(); |
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433 | 433 | if (cursor.line === (this.code_mirror.lineCount()-1) && cursor.ch === this.code_mirror.getLine(cursor.line).length) { |
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434 | 434 | return true; |
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435 | 435 | } else { |
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436 | 436 | return false; |
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437 | 437 | } |
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438 | 438 | }; |
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439 | 439 | |
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440 | 440 | |
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441 | 441 | /** |
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442 | 442 | * @class HeadingCell |
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443 | 443 | * @extends IPython.TextCell |
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444 | 444 | */ |
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445 | 445 | |
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446 | 446 | /** |
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447 | 447 | * @constructor HeadingCell |
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448 | 448 | * @extends IPython.TextCell |
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449 | 449 | */ |
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450 | 450 | var HeadingCell = function (options) { |
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451 | 451 | |
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452 | 452 | options = this.mergeopt(HeadingCell,options) |
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453 | 453 | TextCell.apply(this, [options]); |
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454 | 454 | |
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455 | 455 | /** |
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456 | 456 | * heading level of the cell, use getter and setter to access |
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457 | 457 | * @property level |
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458 | 458 | */ |
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459 | 459 | this.level = 1; |
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460 | 460 | this.cell_type = 'heading'; |
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461 | 461 | }; |
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462 | 462 | |
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463 | 463 | HeadingCell.options_default = { |
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464 | 464 | placeholder: "Type Heading Here" |
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465 | 465 | }; |
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466 | 466 | |
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467 | 467 | HeadingCell.prototype = new TextCell(); |
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468 | 468 | |
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469 | 469 | /** @method fromJSON */ |
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470 | 470 | HeadingCell.prototype.fromJSON = function (data) { |
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471 | 471 | if (data.level != undefined){ |
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472 | 472 | this.level = data.level; |
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473 | 473 | } |
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474 | 474 | TextCell.prototype.fromJSON.apply(this, arguments); |
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475 | 475 | }; |
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476 | 476 | |
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477 | 477 | |
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478 | 478 | /** @method toJSON */ |
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479 | 479 | HeadingCell.prototype.toJSON = function () { |
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480 | 480 | var data = TextCell.prototype.toJSON.apply(this); |
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481 | 481 | data.level = this.get_level(); |
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482 | 482 | return data; |
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483 | 483 | }; |
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484 | 484 | |
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485 | 485 | |
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486 | 486 | /** |
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487 | 487 | * Change heading level of cell, and re-render |
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488 | 488 | * @method set_level |
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489 | 489 | */ |
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490 | 490 | HeadingCell.prototype.set_level = function (level) { |
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491 | 491 | this.level = level; |
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492 | 492 | if (this.rendered) { |
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493 | 493 | this.rendered = false; |
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494 | 494 | this.render(); |
|
495 | 495 | }; |
|
496 | 496 | }; |
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497 | 497 | |
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498 | 498 | /** The depth of header cell, based on html (h1 to h6) |
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499 | 499 | * @method get_level |
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500 | 500 | * @return {integer} level - for 1 to 6 |
|
501 | 501 | */ |
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502 | 502 | HeadingCell.prototype.get_level = function () { |
|
503 | 503 | return this.level; |
|
504 | 504 | }; |
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505 | 505 | |
|
506 | 506 | |
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507 | 507 | HeadingCell.prototype.set_rendered = function (html) { |
|
508 | 508 | this.element.find("div.text_cell_render").html(html); |
|
509 | 509 | }; |
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510 | 510 | |
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511 | 511 | |
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512 | 512 | HeadingCell.prototype.get_rendered = function () { |
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513 | 513 | var r = this.element.find("div.text_cell_render"); |
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514 | 514 | return r.children().first().html(); |
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515 | 515 | }; |
|
516 | 516 | |
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517 | 517 | |
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518 | 518 | HeadingCell.prototype.render = function () { |
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519 | 519 | if (this.rendered === false) { |
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520 | 520 | var text = this.get_text(); |
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521 | 521 | // Markdown headings must be a single line |
|
522 | 522 | text = text.replace(/\n/g, ' '); |
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523 | 523 | if (text === "") { text = this.placeholder; } |
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524 | 524 | text = Array(this.level + 1).join("#") + " " + text; |
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525 | 525 | var text_and_math = IPython.mathjaxutils.remove_math(text); |
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526 | 526 | var text = text_and_math[0]; |
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527 | 527 | var math = text_and_math[1]; |
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528 | 528 | var html = marked.parser(marked.lexer(text)); |
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529 | 529 | var h = $(IPython.mathjaxutils.replace_math(html, math)); |
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530 | 530 | // add id and linkback anchor |
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531 | 531 | var hash = h.text().replace(/ /g, '-'); |
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532 | 532 | h.attr('id', hash); |
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533 | 533 | h.append( |
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534 | 534 | $('<a/>') |
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535 | 535 | .addClass('anchor-link') |
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536 | 536 | .attr('href', '#' + hash) |
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537 | 537 | .text('¶') |
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538 | 538 | ); |
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539 | 539 | |
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540 | 540 | this.set_rendered(h); |
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541 | 541 | this.typeset(); |
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542 | 542 | this.element.find('div.text_cell_input').hide(); |
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543 | 543 | this.element.find("div.text_cell_render").show(); |
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544 | 544 | this.rendered = true; |
|
545 | 545 | }; |
|
546 | 546 | }; |
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547 | 547 | |
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548 | 548 | IPython.TextCell = TextCell; |
|
549 | 549 | IPython.MarkdownCell = MarkdownCell; |
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550 | 550 | IPython.RawCell = RawCell; |
|
551 | 551 | IPython.HeadingCell = HeadingCell; |
|
552 | 552 | |
|
553 | 553 | |
|
554 | 554 | return IPython; |
|
555 | 555 | |
|
556 | 556 | }(IPython)); |
|
557 | 557 |
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