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 | * Handles styles in a give document.
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22 | */
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23 |
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24 | var FCKStyles = FCK.Styles =
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25 | {
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26 | _Callbacks : {},
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27 | _ObjectStyles : {},
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28 |
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29 | ApplyStyle : function( style )
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30 | {
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31 | if ( typeof style == 'string' )
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32 | style = this.GetStyles()[ style ] ;
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33 |
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34 | if ( style )
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35 | {
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36 | if ( style.GetType() == FCK_STYLE_OBJECT )
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37 | style.ApplyToObject( FCKSelection.GetSelectedElement() ) ;
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38 | else
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39 | style.ApplyToSelection( FCK.EditorWindow ) ;
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40 |
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41 | FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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42 | }
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43 | },
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44 |
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45 | RemoveStyle : function( style )
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46 | {
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47 | if ( typeof style == 'string' )
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48 | style = this.GetStyles()[ style ] ;
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49 |
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50 | if ( style )
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51 | {
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52 | style.RemoveFromSelection( FCK.EditorWindow ) ;
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53 | FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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54 | }
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55 | },
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56 |
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57 | /**
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58 | * Defines a callback function to be called when the current state of a
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59 | * specific style changes.
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60 | */
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61 | AttachStyleStateChange : function( styleName, callback, callbackOwner )
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62 | {
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63 | var callbacks = this._Callbacks[ styleName ] ;
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64 |
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65 | if ( !callbacks )
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66 | callbacks = this._Callbacks[ styleName ] = [] ;
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67 |
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68 | callbacks.push( [ callback, callbackOwner ] ) ;
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69 | },
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70 |
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71 | CheckSelectionChanges : function()
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72 | {
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73 | var startElement = FCKSelection.GetBoundaryParentElement( true ) ;
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74 |
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75 | if ( !startElement )
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76 | return ;
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77 |
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78 | // Walks the start node parents path, checking all styles that are being listened.
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79 | var path = new FCKElementPath( startElement ) ;
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80 | var styles = this.GetStyles() ;
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81 |
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82 | for ( var styleName in styles )
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83 | {
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84 | var callbacks = this._Callbacks[ styleName ] ;
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85 |
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86 | if ( callbacks )
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87 | {
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88 | var style = styles[ styleName ] ;
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89 | var state = style.CheckActive( path ) ;
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90 |
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91 | if ( state != ( style._LastState || null ) )
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92 | {
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93 | style._LastState = state ;
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94 |
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95 | for ( var i = 0 ; i < callbacks.length ; i++ )
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96 | {
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97 | var callback = callbacks[i][0] ;
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98 | var callbackOwner = callbacks[i][1] ;
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99 |
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100 | callback.call( callbackOwner || window, styleName, state ) ;
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101 | }
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102 | }
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103 | }
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104 | }
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105 | },
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106 |
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107 | CheckStyleInSelection : function( styleName )
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108 | {
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109 | return false ;
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110 | },
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111 |
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112 | _GetRemoveFormatTagsRegex : function ()
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113 | {
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114 | var regex = new RegExp( '^(?:' + FCKConfig.RemoveFormatTags.replace( /,/g,'|' ) + ')$', 'i' ) ;
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115 |
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116 | return (this._GetRemoveFormatTagsRegex = function()
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117 | {
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118 | return regex ;
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119 | })
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120 | && regex ;
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121 | },
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122 |
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123 | /**
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124 | * Remove all styles from the current selection.
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125 | * TODO:
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126 | * - This is almost a duplication of FCKStyle.RemoveFromRange. We should
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127 | * try to merge things.
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128 | */
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129 | RemoveAll : function()
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130 | {
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131 | var range = new FCKDomRange( FCK.EditorWindow ) ;
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132 | range.MoveToSelection() ;
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133 |
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134 | if ( range.CheckIsCollapsed() )
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135 | return ;
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136 |
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137 | // Expand the range, if inside inline element boundaries.
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138 | range.Expand( 'inline_elements' ) ;
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139 |
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140 | // Get the bookmark nodes.
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141 | // Bookmark the range so we can re-select it after processing.
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142 | var bookmark = range.CreateBookmark( true ) ;
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143 |
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144 | // The style will be applied within the bookmark boundaries.
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145 | var startNode = range.GetBookmarkNode( bookmark, true ) ;
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146 | var endNode = range.GetBookmarkNode( bookmark, false ) ;
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147 |
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148 | range.Release( true ) ;
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149 |
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150 | var tagsRegex = this._GetRemoveFormatTagsRegex() ;
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151 |
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152 | // We need to check the selection boundaries (bookmark spans) to break
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153 | // the code in a way that we can properly remove partially selected nodes.
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154 | // For example, removing a <b> style from
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155 | // <b>This is [some text</b> to show <b>the] problem</b>
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156 | // ... where [ and ] represent the selection, must result:
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157 | // <b>This is </b>[some text to show the]<b> problem</b>
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158 | // The strategy is simple, we just break the partial nodes before the
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159 | // removal logic, having something that could be represented this way:
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160 | // <b>This is </b>[<b>some text</b> to show <b>the</b>]<b> problem</b>
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161 |
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162 | // Let's start checking the start boundary.
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163 | var path = new FCKElementPath( startNode ) ;
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164 | var pathElements = path.Elements ;
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165 | var pathElement ;
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166 |
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167 | for ( var i = 1 ; i < pathElements.length ; i++ )
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168 | {
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169 | pathElement = pathElements[i] ;
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170 |
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171 | if ( pathElement == path.Block || pathElement == path.BlockLimit )
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172 | break ;
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173 |
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174 | // If this element can be removed (even partially).
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175 | if ( tagsRegex.test( pathElement.nodeName ) )
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176 | FCKDomTools.BreakParent( startNode, pathElement, range ) ;
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177 | }
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178 |
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179 | // Now the end boundary.
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180 | path = new FCKElementPath( endNode ) ;
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181 | pathElements = path.Elements ;
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182 |
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183 | for ( var i = 1 ; i < pathElements.length ; i++ )
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184 | {
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185 | pathElement = pathElements[i] ;
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186 |
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187 | if ( pathElement == path.Block || pathElement == path.BlockLimit )
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188 | break ;
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189 |
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190 | elementName = pathElement.nodeName.toLowerCase() ;
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191 |
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192 | // If this element can be removed (even partially).
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193 | if ( tagsRegex.test( pathElement.nodeName ) )
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194 | FCKDomTools.BreakParent( endNode, pathElement, range ) ;
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195 | }
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196 |
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197 | // Navigate through all nodes between the bookmarks.
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198 | var currentNode = FCKDomTools.GetNextSourceNode( startNode, true, 1 ) ;
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199 |
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200 | while ( currentNode )
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201 | {
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202 | // If we have reached the end of the selection, stop looping.
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203 | if ( currentNode == endNode )
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204 | break ;
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205 |
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206 | // Cache the next node to be processed. Do it now, because
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207 | // currentNode may be removed.
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208 | var nextNode = FCKDomTools.GetNextSourceNode( currentNode, false, 1 ) ;
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209 |
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210 | // Remove elements nodes that match with this style rules.
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211 | if ( tagsRegex.test( currentNode.nodeName ) )
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212 | FCKDomTools.RemoveNode( currentNode, true ) ;
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213 | else
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214 | FCKDomTools.RemoveAttributes( currentNode, FCKConfig.RemoveAttributesArray );
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215 |
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216 | currentNode = nextNode ;
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217 | }
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218 |
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219 | range.SelectBookmark( bookmark ) ;
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220 |
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221 | FCK.Events.FireEvent( 'OnSelectionChange' ) ;
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222 | },
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223 |
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224 | GetStyle : function( styleName )
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225 | {
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226 | return this.GetStyles()[ styleName ] ;
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227 | },
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228 |
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229 | GetStyles : function()
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230 | {
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231 | var styles = this._GetStyles ;
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232 | if ( !styles )
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233 | {
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234 | styles = this._GetStyles = FCKTools.Merge(
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235 | this._LoadStylesCore(),
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236 | this._LoadStylesCustom(),
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237 | this._LoadStylesXml() ) ;
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238 | }
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239 | return styles ;
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240 | },
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241 |
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242 | CheckHasObjectStyle : function( elementName )
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243 | {
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244 | return !!this._ObjectStyles[ elementName ] ;
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245 | },
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246 |
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247 | _LoadStylesCore : function()
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248 | {
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249 | var styles = {};
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250 | var styleDefs = FCKConfig.CoreStyles ;
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251 |
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252 | for ( var styleName in styleDefs )
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253 | {
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254 | // Core styles are prefixed with _FCK_.
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255 | var style = styles[ '_FCK_' + styleName ] = new FCKStyle( styleDefs[ styleName ] ) ;
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256 | style.IsCore = true ;
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257 | }
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258 | return styles ;
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259 | },
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260 |
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261 | _LoadStylesCustom : function()
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262 | {
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263 | var styles = {};
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264 | var styleDefs = FCKConfig.CustomStyles ;
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265 |
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266 | if ( styleDefs )
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267 | {
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268 | for ( var styleName in styleDefs )
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269 | {
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270 | var style = styles[ styleName ] = new FCKStyle( styleDefs[ styleName ] ) ;
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271 | style.Name = styleName ;
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272 | }
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273 | }
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274 |
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275 | return styles ;
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276 | },
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277 |
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278 | _LoadStylesXml : function()
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279 | {
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280 | var styles = {};
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281 |
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282 | var stylesXmlPath = FCKConfig.StylesXmlPath ;
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283 |
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284 | if ( !stylesXmlPath || stylesXmlPath.length == 0 )
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285 | return styles ;
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286 |
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287 | // Load the XML file into a FCKXml object.
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288 | var xml = new FCKXml() ;
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289 | xml.LoadUrl( stylesXmlPath ) ;
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290 |
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291 | var stylesXmlObj = FCKXml.TransformToObject( xml.SelectSingleNode( 'Styles' ) ) ;
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292 |
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293 | // Get the "Style" nodes defined in the XML file.
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294 | var styleNodes = stylesXmlObj.$Style ;
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295 |
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296 | // Check that it did contain some valid nodes
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297 | if ( !styleNodes )
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298 | return styles ;
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299 |
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300 | // Add each style to our "Styles" collection.
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301 | for ( var i = 0 ; i < styleNodes.length ; i++ )
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302 | {
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303 | var styleNode = styleNodes[i] ;
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304 |
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305 | var element = ( styleNode.element || '' ).toLowerCase() ;
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306 |
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307 | if ( element.length == 0 )
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308 | throw( 'The element name is required. Error loading "' + stylesXmlPath + '"' ) ;
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309 |
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310 | var styleDef = {
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311 | Element : element,
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312 | Attributes : {},
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313 | Styles : {},
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314 | Overrides : []
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315 | } ;
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316 |
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317 | // Get the attributes defined for the style (if any).
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318 | var attNodes = styleNode.$Attribute || [] ;
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319 |
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320 | // Add the attributes to the style definition object.
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321 | for ( var j = 0 ; j < attNodes.length ; j++ )
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322 | {
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323 | styleDef.Attributes[ attNodes[j].name ] = attNodes[j].value ;
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324 | }
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325 |
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326 | // Get the styles defined for the style (if any).
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327 | var cssStyleNodes = styleNode.$Style || [] ;
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328 |
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329 | // Add the attributes to the style definition object.
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330 | for ( j = 0 ; j < cssStyleNodes.length ; j++ )
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331 | {
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332 | styleDef.Styles[ cssStyleNodes[j].name ] = cssStyleNodes[j].value ;
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333 | }
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334 |
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335 | // Load override definitions.
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336 | var cssStyleOverrideNodes = styleNode.$Override ;
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337 | if ( cssStyleOverrideNodes )
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338 | {
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339 | for ( j = 0 ; j < cssStyleOverrideNodes.length ; j++ )
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340 | {
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341 | var overrideNode = cssStyleOverrideNodes[j] ;
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342 | var overrideDef =
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343 | {
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344 | Element : overrideNode.element
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345 | } ;
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346 |
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347 | var overrideAttNode = overrideNode.$Attribute ;
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348 | if ( overrideAttNode )
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349 | {
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350 | overrideDef.Attributes = {} ;
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351 | for ( var k = 0 ; k < overrideAttNode.length ; k++ )
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352 | {
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353 | var overrideAttValue = overrideAttNode[k].value || null ;
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354 | if ( overrideAttValue )
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355 | {
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356 | // Check if the override attribute value is a regular expression.
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357 | var regexMatch = overrideAttValue && FCKRegexLib.RegExp.exec( overrideAttValue ) ;
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358 | if ( regexMatch )
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359 | overrideAttValue = new RegExp( regexMatch[1], regexMatch[2] || '' ) ;
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360 | }
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361 | overrideDef.Attributes[ overrideAttNode[k].name ] = overrideAttValue ;
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362 | }
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363 | }
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364 |
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365 | styleDef.Overrides.push( overrideDef ) ;
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366 | }
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367 | }
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368 |
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369 | var style = new FCKStyle( styleDef ) ;
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370 | style.Name = styleNode.name || element ;
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371 |
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372 | if ( style.GetType() == FCK_STYLE_OBJECT )
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373 | this._ObjectStyles[ element ] = true ;
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374 |
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375 | // Add the style to the "Styles" collection using it's name as the key.
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376 | styles[ style.Name ] = style ;
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377 | }
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378 |
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379 | return styles ;
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380 | }
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381 | } ;
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