1 | /*
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2 | Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
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3 | For licensing, see LICENSE.html or http://ckeditor.com/license
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4 | */
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5 |
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6 | /**
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7 | * @file Increse and decrease indent commands.
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8 | */
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9 |
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10 | (function()
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11 | {
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12 | var listNodeNames = { ol : 1, ul : 1 };
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13 |
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14 | function setState( editor, state )
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15 | {
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16 | editor.getCommand( this.name ).setState( state );
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17 | }
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18 |
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19 | function onSelectionChange( evt )
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20 | {
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21 | var elements = evt.data.path.elements,
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22 | listNode, listItem,
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23 | editor = evt.editor;
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24 |
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25 | for ( var i = 0 ; i < elements.length ; i++ )
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26 | {
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27 | if ( elements[i].getName() == 'li' )
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28 | {
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29 | listItem = elements[i];
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30 | continue;
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31 | }
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32 | if ( listNodeNames[ elements[i].getName() ] )
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33 | {
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34 | listNode = elements[i];
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35 | break;
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36 | }
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37 | }
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38 |
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39 | if ( listNode )
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40 | {
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41 | if ( this.name == 'outdent' )
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42 | return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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43 | else
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44 | {
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45 | while ( listItem && ( listItem = listItem.getPrevious( CKEDITOR.dom.walker.whitespaces( true ) ) ) )
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46 | {
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47 | if ( listItem.getName && listItem.getName() == 'li' )
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48 | return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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49 | }
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50 | return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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51 | }
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52 | }
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53 |
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54 | if ( !this.useIndentClasses && this.name == 'indent' )
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55 | return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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56 |
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57 | var path = evt.data.path,
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58 | firstBlock = path.block || path.blockLimit;
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59 | if ( !firstBlock )
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60 | return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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61 |
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62 | if ( this.useIndentClasses )
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63 | {
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64 | var indentClass = firstBlock.$.className.match( this.classNameRegex ),
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65 | indentStep = 0;
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66 | if ( indentClass )
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67 | {
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68 | indentClass = indentClass[1];
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69 | indentStep = this.indentClassMap[ indentClass ];
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70 | }
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71 | if ( ( this.name == 'outdent' && !indentStep ) ||
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72 | ( this.name == 'indent' && indentStep == editor.config.indentClasses.length ) )
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73 | return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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74 | return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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75 | }
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76 | else
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77 | {
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78 | var indent = parseInt( firstBlock.getStyle( this.indentCssProperty ), 10 );
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79 | if ( isNaN( indent ) )
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80 | indent = 0;
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81 | if ( indent <= 0 )
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82 | return setState.call( this, editor, CKEDITOR.TRISTATE_DISABLED );
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83 | return setState.call( this, editor, CKEDITOR.TRISTATE_OFF );
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84 | }
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85 | }
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86 |
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87 | function indentList( editor, range, listNode )
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88 | {
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89 | // Our starting and ending points of the range might be inside some blocks under a list item...
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90 | // So before playing with the iterator, we need to expand the block to include the list items.
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91 | var startContainer = range.startContainer,
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92 | endContainer = range.endContainer;
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93 | while ( startContainer && !startContainer.getParent().equals( listNode ) )
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94 | startContainer = startContainer.getParent();
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95 | while ( endContainer && !endContainer.getParent().equals( listNode ) )
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96 | endContainer = endContainer.getParent();
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97 |
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98 | if ( !startContainer || !endContainer )
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99 | return;
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100 |
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101 | // Now we can iterate over the individual items on the same tree depth.
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102 | var block = startContainer,
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103 | itemsToMove = [],
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104 | stopFlag = false;
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105 | while ( !stopFlag )
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106 | {
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107 | if ( block.equals( endContainer ) )
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108 | stopFlag = true;
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109 | itemsToMove.push( block );
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110 | block = block.getNext();
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111 | }
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112 | if ( itemsToMove.length < 1 )
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113 | return;
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114 |
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115 | // Do indent or outdent operations on the array model of the list, not the
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116 | // list's DOM tree itself. The array model demands that it knows as much as
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117 | // possible about the surrounding lists, we need to feed it the further
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118 | // ancestor node that is still a list.
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119 | var listParents = listNode.getParents( true );
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120 | for ( var i = 0 ; i < listParents.length ; i++ )
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121 | {
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122 | if ( listParents[i].getName && listNodeNames[ listParents[i].getName() ] )
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123 | {
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124 | listNode = listParents[i];
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125 | break;
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126 | }
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127 | }
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128 | var indentOffset = this.name == 'indent' ? 1 : -1,
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129 | startItem = itemsToMove[0],
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130 | lastItem = itemsToMove[ itemsToMove.length - 1 ],
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131 | database = {};
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132 |
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133 | // Convert the list DOM tree into a one dimensional array.
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134 | var listArray = CKEDITOR.plugins.list.listToArray( listNode, database );
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135 |
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136 | // Apply indenting or outdenting on the array.
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137 | var baseIndent = listArray[ lastItem.getCustomData( 'listarray_index' ) ].indent;
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138 | for ( i = startItem.getCustomData( 'listarray_index' ) ; i <= lastItem.getCustomData( 'listarray_index' ) ; i++ )
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139 | listArray[i].indent += indentOffset;
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140 | for ( i = lastItem.getCustomData( 'listarray_index' ) + 1 ;
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141 | i < listArray.length && listArray[i].indent > baseIndent ; i++ )
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142 | listArray[i].indent += indentOffset;
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143 |
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144 | // Convert the array back to a DOM forest (yes we might have a few subtrees now).
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145 | // And replace the old list with the new forest.
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146 | var newList = CKEDITOR.plugins.list.arrayToList( listArray, database, null, editor.config.enterMode, 0 );
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147 |
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148 | // Avoid nested <li> after outdent even they're visually same,
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149 | // recording them for later refactoring.(#3982)
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150 | if ( this.name == 'outdent' )
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151 | {
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152 | var parentLiElement;
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153 | if ( ( parentLiElement = listNode.getParent() ) && parentLiElement.is( 'li' ) )
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154 | {
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155 | var children = newList.listNode.getChildren(),
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156 | pendingLis = [],
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157 | count = children.count(),
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158 | child;
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159 |
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160 | for ( i = count - 1 ; i >= 0 ; i-- )
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161 | {
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162 | if( ( child = children.getItem( i ) ) && child.is && child.is( 'li' ) )
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163 | pendingLis.push( child );
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164 | }
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165 | }
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166 | }
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167 |
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168 | if ( newList )
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169 | newList.listNode.replace( listNode );
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170 |
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171 | // Move the nested <li> to be appeared after the parent.
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172 | if ( pendingLis && pendingLis.length )
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173 | {
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174 | for ( i = 0; i < pendingLis.length ; i++ )
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175 | {
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176 | var li = pendingLis[ i ],
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177 | followingList = li;
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178 |
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179 | // Nest preceding <ul>/<ol> inside current <li> if any.
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180 | while( ( followingList = followingList.getNext() ) &&
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181 | followingList.is &&
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182 | followingList.getName() in listNodeNames )
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183 | {
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184 | li.append( followingList );
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185 | }
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186 |
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187 | li.insertAfter( parentLiElement );
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188 | }
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189 | }
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190 |
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191 | // Clean up the markers.
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192 | CKEDITOR.dom.element.clearAllMarkers( database );
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193 | }
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194 |
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195 | function indentBlock( editor, range )
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196 | {
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197 | var iterator = range.createIterator(),
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198 | enterMode = editor.config.enterMode;
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199 | iterator.enforceRealBlocks = true;
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200 | iterator.enlargeBr = enterMode != CKEDITOR.ENTER_BR;
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201 | var block;
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202 | while ( ( block = iterator.getNextParagraph() ) )
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203 | {
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204 |
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205 | if ( this.useIndentClasses )
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206 | {
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207 | // Transform current class name to indent step index.
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208 | var indentClass = block.$.className.match( this.classNameRegex ),
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209 | indentStep = 0;
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210 | if ( indentClass )
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211 | {
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212 | indentClass = indentClass[1];
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213 | indentStep = this.indentClassMap[ indentClass ];
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214 | }
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215 |
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216 | // Operate on indent step index, transform indent step index back to class
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217 | // name.
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218 | if ( this.name == 'outdent' )
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219 | indentStep--;
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220 | else
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221 | indentStep++;
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222 | indentStep = Math.min( indentStep, editor.config.indentClasses.length );
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223 | indentStep = Math.max( indentStep, 0 );
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224 | var className = CKEDITOR.tools.ltrim( block.$.className.replace( this.classNameRegex, '' ) );
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225 | if ( indentStep < 1 )
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226 | block.$.className = className;
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227 | else
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228 | block.addClass( editor.config.indentClasses[ indentStep - 1 ] );
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229 | }
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230 | else
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231 | {
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232 | var currentOffset = parseInt( block.getStyle( this.indentCssProperty ), 10 );
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233 | if ( isNaN( currentOffset ) )
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234 | currentOffset = 0;
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235 | currentOffset += ( this.name == 'indent' ? 1 : -1 ) * editor.config.indentOffset;
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236 | currentOffset = Math.max( currentOffset, 0 );
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237 | currentOffset = Math.ceil( currentOffset / editor.config.indentOffset ) * editor.config.indentOffset;
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238 | block.setStyle( this.indentCssProperty, currentOffset ? currentOffset + editor.config.indentUnit : '' );
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239 | if ( block.getAttribute( 'style' ) === '' )
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240 | block.removeAttribute( 'style' );
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241 | }
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242 | }
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243 | }
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244 |
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245 | function indentCommand( editor, name )
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246 | {
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247 | this.name = name;
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248 | this.useIndentClasses = editor.config.indentClasses && editor.config.indentClasses.length > 0;
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249 | if ( this.useIndentClasses )
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250 | {
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251 | this.classNameRegex = new RegExp( '(?:^|\\s+)(' + editor.config.indentClasses.join( '|' ) + ')(?=$|\\s)' );
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252 | this.indentClassMap = {};
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253 | for ( var i = 0 ; i < editor.config.indentClasses.length ; i++ )
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254 | this.indentClassMap[ editor.config.indentClasses[i] ] = i + 1;
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255 | }
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256 | else
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257 | this.indentCssProperty = editor.config.contentsLangDirection == 'ltr' ? 'margin-left' : 'margin-right';
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258 | }
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259 |
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260 | indentCommand.prototype = {
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261 | exec : function( editor )
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262 | {
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263 | var selection = editor.getSelection(),
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264 | range = selection && selection.getRanges()[0];
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265 |
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266 | if ( !selection || !range )
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267 | return;
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268 |
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269 | var bookmarks = selection.createBookmarks( true ),
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270 | nearestListBlock = range.getCommonAncestor();
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271 |
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272 | while ( nearestListBlock && !( nearestListBlock.type == CKEDITOR.NODE_ELEMENT &&
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273 | listNodeNames[ nearestListBlock.getName() ] ) )
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274 | nearestListBlock = nearestListBlock.getParent();
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275 |
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276 | if ( nearestListBlock )
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277 | indentList.call( this, editor, range, nearestListBlock );
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278 | else
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279 | indentBlock.call( this, editor, range );
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280 |
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281 | editor.focus();
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282 | editor.forceNextSelectionCheck();
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283 | selection.selectBookmarks( bookmarks );
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284 | }
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285 | };
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286 |
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287 | CKEDITOR.plugins.add( 'indent',
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288 | {
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289 | init : function( editor )
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290 | {
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291 | // Register commands.
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292 | var indent = new indentCommand( editor, 'indent' ),
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293 | outdent = new indentCommand( editor, 'outdent' );
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294 | editor.addCommand( 'indent', indent );
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295 | editor.addCommand( 'outdent', outdent );
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296 |
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297 | // Register the toolbar buttons.
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298 | editor.ui.addButton( 'Indent',
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299 | {
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300 | label : editor.lang.indent,
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301 | command : 'indent'
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302 | });
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303 | editor.ui.addButton( 'Outdent',
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304 | {
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305 | label : editor.lang.outdent,
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306 | command : 'outdent'
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307 | });
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308 |
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309 | // Register the state changing handlers.
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310 | editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, indent ) );
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311 | editor.on( 'selectionChange', CKEDITOR.tools.bind( onSelectionChange, outdent ) );
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312 | },
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313 |
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314 | requires : [ 'domiterator', 'list' ]
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315 | } );
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316 | })();
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317 |
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318 | CKEDITOR.tools.extend( CKEDITOR.config,
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319 | {
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320 | indentOffset : 40,
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321 | indentUnit : 'px',
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322 | indentClasses : null
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323 | });
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