1 | /*
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2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net
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3 | * Copyright (C) 2003-2009 Frederico Caldeira Knabben
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4 | *
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5 | * == BEGIN LICENSE ==
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6 | *
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7 | * Licensed under the terms of any of the following licenses at your
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8 | * choice:
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9 | *
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10 | * - GNU General Public License Version 2 or later (the "GPL")
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11 | * http://www.gnu.org/licenses/gpl.html
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12 | *
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13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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14 | * http://www.gnu.org/licenses/lgpl.html
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15 | *
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16 | * - Mozilla Public License Version 1.1 or later (the "MPL")
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17 | * http://www.mozilla.org/MPL/MPL-1.1.html
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18 | *
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19 | * == END LICENSE ==
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20 | *
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21 | * FCKIndentCommand Class: controls block indentation.
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22 | */
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23 |
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24 | var FCKIndentCommand = function( name, offset )
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25 | {
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26 | this.Name = name ;
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27 | this.Offset = offset ;
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28 | this.IndentCSSProperty = FCKConfig.ContentLangDirection.IEquals( 'ltr' ) ? 'marginLeft' : 'marginRight' ;
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29 | }
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30 |
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31 | FCKIndentCommand._InitIndentModeParameters = function()
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32 | {
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33 | if ( FCKConfig.IndentClasses && FCKConfig.IndentClasses.length > 0 )
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34 | {
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35 | this._UseIndentClasses = true ;
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36 | this._IndentClassMap = {} ;
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37 | for ( var i = 0 ; i < FCKConfig.IndentClasses.length ;i++ )
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38 | this._IndentClassMap[FCKConfig.IndentClasses[i]] = i + 1 ;
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39 | this._ClassNameRegex = new RegExp( '(?:^|\\s+)(' + FCKConfig.IndentClasses.join( '|' ) + ')(?=$|\\s)' ) ;
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40 | }
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41 | else
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42 | this._UseIndentClasses = false ;
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43 | }
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44 |
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45 |
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46 | FCKIndentCommand.prototype =
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47 | {
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48 | Execute : function()
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49 | {
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50 | // Save an undo snapshot before doing anything.
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51 | FCKUndo.SaveUndoStep() ;
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52 |
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53 | var range = new FCKDomRange( FCK.EditorWindow ) ;
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54 | range.MoveToSelection() ;
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55 | var bookmark = range.CreateBookmark() ;
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56 |
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57 | // Two cases to handle here: either we're in a list, or not.
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58 | // If we're in a list, then the indent/outdent operations would be done on the list nodes.
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59 | // Otherwise, apply the operation on the nearest block nodes.
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60 | var nearestListBlock = FCKDomTools.GetCommonParentNode( range.StartNode || range.StartContainer ,
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61 | range.EndNode || range.EndContainer,
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62 | ['ul', 'ol'] ) ;
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63 | if ( nearestListBlock )
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64 | this._IndentList( range, nearestListBlock ) ;
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65 | else
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66 | this._IndentBlock( range ) ;
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67 |
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68 | range.MoveToBookmark( bookmark ) ;
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69 | range.Select() ;
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70 |
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71 | FCK.Focus() ;
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72 | FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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73 | },
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74 |
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75 | GetState : function()
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76 | {
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77 | // Disabled if not WYSIWYG.
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78 | if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG || ! FCK.EditorWindow )
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79 | return FCK_TRISTATE_DISABLED ;
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80 |
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81 | // Initialize parameters if not already initialzed.
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82 | if ( FCKIndentCommand._UseIndentClasses == undefined )
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83 | FCKIndentCommand._InitIndentModeParameters() ;
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84 |
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85 | // If we're not in a list, and the starting block's indentation is zero, and the current
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86 | // command is the outdent command, then we should return FCK_TRISTATE_DISABLED.
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87 | var startContainer = FCKSelection.GetBoundaryParentElement( true ) ;
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88 | var endContainer = FCKSelection.GetBoundaryParentElement( false ) ;
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89 | var listNode = FCKDomTools.GetCommonParentNode( startContainer, endContainer, ['ul','ol'] ) ;
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90 |
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91 | if ( listNode )
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92 | {
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93 | if ( this.Name.IEquals( 'outdent' ) )
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94 | return FCK_TRISTATE_OFF ;
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95 | var firstItem = FCKTools.GetElementAscensor( startContainer, 'li' ) ;
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96 | if ( !firstItem || !firstItem.previousSibling )
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97 | return FCK_TRISTATE_DISABLED ;
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98 | return FCK_TRISTATE_OFF ;
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99 | }
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100 | if ( ! FCKIndentCommand._UseIndentClasses && this.Name.IEquals( 'indent' ) )
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101 | return FCK_TRISTATE_OFF;
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102 |
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103 | var path = new FCKElementPath( startContainer ) ;
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104 | var firstBlock = path.Block || path.BlockLimit ;
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105 | if ( !firstBlock )
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106 | return FCK_TRISTATE_DISABLED ;
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107 |
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108 | if ( FCKIndentCommand._UseIndentClasses )
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109 | {
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110 | var indentClass = firstBlock.className.match( FCKIndentCommand._ClassNameRegex ) ;
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111 | var indentStep = 0 ;
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112 | if ( indentClass != null )
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113 | {
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114 | indentClass = indentClass[1] ;
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115 | indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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116 | }
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117 | if ( ( this.Name == 'outdent' && indentStep == 0 ) ||
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118 | ( this.Name == 'indent' && indentStep == FCKConfig.IndentClasses.length ) )
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119 | return FCK_TRISTATE_DISABLED ;
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120 | return FCK_TRISTATE_OFF ;
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121 | }
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122 | else
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123 | {
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124 | var indent = parseInt( firstBlock.style[this.IndentCSSProperty], 10 ) ;
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125 | if ( isNaN( indent ) )
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126 | indent = 0 ;
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127 | if ( indent <= 0 )
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128 | return FCK_TRISTATE_DISABLED ;
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129 | return FCK_TRISTATE_OFF ;
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130 | }
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131 | },
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132 |
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133 | _IndentBlock : function( range )
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134 | {
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135 | var iterator = new FCKDomRangeIterator( range ) ;
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136 | iterator.EnforceRealBlocks = true ;
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137 |
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138 | range.Expand( 'block_contents' ) ;
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139 | var commonParents = FCKDomTools.GetCommonParents( range.StartContainer, range.EndContainer ) ;
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140 | var nearestParent = commonParents[commonParents.length - 1] ;
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141 | var block ;
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142 |
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143 | while ( ( block = iterator.GetNextParagraph() ) )
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144 | {
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145 | // We don't want to indent subtrees recursively, so only perform the indent operation
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146 | // if the block itself is the nearestParent, or the block's parent is the nearestParent.
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147 | if ( ! ( block == nearestParent || block.parentNode == nearestParent ) )
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148 | continue ;
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149 |
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150 | if ( FCKIndentCommand._UseIndentClasses )
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151 | {
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152 | // Transform current class name to indent step index.
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153 | var indentClass = block.className.match( FCKIndentCommand._ClassNameRegex ) ;
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154 | var indentStep = 0 ;
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155 | if ( indentClass != null )
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156 | {
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157 | indentClass = indentClass[1] ;
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158 | indentStep = FCKIndentCommand._IndentClassMap[indentClass] ;
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159 | }
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160 |
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161 | // Operate on indent step index, transform indent step index back to class name.
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162 | if ( this.Name.IEquals( 'outdent' ) )
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163 | indentStep-- ;
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164 | else if ( this.Name.IEquals( 'indent' ) )
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165 | indentStep++ ;
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166 | indentStep = Math.min( indentStep, FCKConfig.IndentClasses.length ) ;
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167 | indentStep = Math.max( indentStep, 0 ) ;
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168 | var className = block.className.replace( FCKIndentCommand._ClassNameRegex, '' ) ;
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169 | if ( indentStep < 1 )
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170 | block.className = className ;
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171 | else
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172 | block.className = ( className.length > 0 ? className + ' ' : '' ) +
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173 | FCKConfig.IndentClasses[indentStep - 1] ;
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174 | }
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175 | else
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176 | {
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177 | // Offset distance is assumed to be in pixels for now.
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178 | var currentOffset = parseInt( block.style[this.IndentCSSProperty], 10 ) ;
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179 | if ( isNaN( currentOffset ) )
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180 | currentOffset = 0 ;
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181 | currentOffset += this.Offset ;
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182 | currentOffset = Math.max( currentOffset, 0 ) ;
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183 | currentOffset = Math.ceil( currentOffset / this.Offset ) * this.Offset ;
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184 | block.style[this.IndentCSSProperty] = currentOffset ? currentOffset + FCKConfig.IndentUnit : '' ;
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185 | if ( block.getAttribute( 'style' ) == '' )
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186 | block.removeAttribute( 'style' ) ;
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187 | }
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188 | }
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189 | },
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190 |
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191 | _IndentList : function( range, listNode )
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192 | {
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193 | // Our starting and ending points of the range might be inside some blocks under a list item...
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194 | // So before playing with the iterator, we need to expand the block to include the list items.
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195 | var startContainer = range.StartContainer ;
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196 | var endContainer = range.EndContainer ;
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197 | while ( startContainer && startContainer.parentNode != listNode )
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198 | startContainer = startContainer.parentNode ;
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199 | while ( endContainer && endContainer.parentNode != listNode )
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200 | endContainer = endContainer.parentNode ;
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201 |
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202 | if ( ! startContainer || ! endContainer )
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203 | return ;
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204 |
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205 | // Now we can iterate over the individual items on the same tree depth.
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206 | var block = startContainer ;
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207 | var itemsToMove = [] ;
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208 | var stopFlag = false ;
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209 | while ( stopFlag == false )
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210 | {
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211 | if ( block == endContainer )
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212 | stopFlag = true ;
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213 | itemsToMove.push( block ) ;
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214 | block = block.nextSibling ;
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215 | }
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216 | if ( itemsToMove.length < 1 )
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217 | return ;
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218 |
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219 | // Do indent or outdent operations on the array model of the list, not the list's DOM tree itself.
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220 | // The array model demands that it knows as much as possible about the surrounding lists, we need
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221 | // to feed it the further ancestor node that is still a list.
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222 | var listParents = FCKDomTools.GetParents( listNode ) ;
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223 | for ( var i = 0 ; i < listParents.length ; i++ )
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224 | {
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225 | if ( listParents[i].nodeName.IEquals( ['ul', 'ol'] ) )
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226 | {
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227 | listNode = listParents[i] ;
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228 | break ;
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229 | }
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230 | }
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231 | var indentOffset = this.Name.IEquals( 'indent' ) ? 1 : -1 ;
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232 | var startItem = itemsToMove[0] ;
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233 | var lastItem = itemsToMove[ itemsToMove.length - 1 ] ;
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234 | var markerObj = {} ;
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235 |
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236 | // Convert the list DOM tree into a one dimensional array.
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237 | var listArray = FCKDomTools.ListToArray( listNode, markerObj ) ;
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238 |
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239 | // Apply indenting or outdenting on the array.
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240 | var baseIndent = listArray[lastItem._FCK_ListArray_Index].indent ;
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241 | for ( var i = startItem._FCK_ListArray_Index ; i <= lastItem._FCK_ListArray_Index ; i++ )
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242 | listArray[i].indent += indentOffset ;
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243 | for ( var i = lastItem._FCK_ListArray_Index + 1 ; i < listArray.length && listArray[i].indent > baseIndent ; i++ )
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244 | listArray[i].indent += indentOffset ;
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245 |
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246 | /* For debug use only
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247 | var PrintArray = function( listArray, doc )
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248 | {
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249 | var s = [] ;
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250 | for ( var i = 0 ; i < listArray.length ; i++ )
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251 | {
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252 | for ( var j in listArray[i] )
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253 | {
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254 | if ( j != 'contents' )
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255 | s.push( j + ":" + listArray[i][j] + "; " ) ;
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256 | else
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257 | {
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258 | var docFrag = doc.createDocumentFragment() ;
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259 | var tmpNode = doc.createElement( 'span' ) ;
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260 | for ( var k = 0 ; k < listArray[i][j].length ; k++ )
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261 | docFrag.appendChild( listArray[i][j][k].cloneNode( true ) ) ;
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262 | tmpNode.appendChild( docFrag ) ;
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263 | s.push( j + ":" + tmpNode.innerHTML + "; ") ;
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264 | }
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265 | }
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266 | s.push( '\n' ) ;
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267 | }
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268 | alert( s.join('') ) ;
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269 | }
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270 | PrintArray( listArray, FCK.EditorDocument ) ;
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271 | */
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272 |
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273 | // Convert the array back to a DOM forest (yes we might have a few subtrees now).
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274 | // And replace the old list with the new forest.
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275 | var newList = FCKDomTools.ArrayToList( listArray ) ;
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276 | if ( newList )
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277 | listNode.parentNode.replaceChild( newList.listNode, listNode ) ;
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278 |
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279 | // Clean up the markers.
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280 | FCKDomTools.ClearAllMarkers( markerObj ) ;
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281 | }
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282 | } ;
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