1 | /* |
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2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net |
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3 | * Copyright (C) 2003-2007 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 | * Utility functions to work with the DOM. |
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22 | */ |
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23 | |
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24 | var FCKDomTools = |
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25 | { |
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26 | MoveChildren : function( source, target ) |
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27 | { |
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28 | if ( source == target ) |
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29 | return ; |
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30 | |
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31 | var eChild ; |
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32 | while ( (eChild = source.firstChild) ) |
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33 | target.appendChild( source.removeChild( eChild ) ) ; |
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34 | }, |
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35 | |
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36 | // Remove blank spaces from the beginning and the end of the contents of a node. |
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37 | TrimNode : function( node, ignoreEndBRs ) |
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38 | { |
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39 | this.LTrimNode( node ) ; |
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40 | this.RTrimNode( node, ignoreEndBRs ) ; |
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41 | }, |
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42 | |
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43 | LTrimNode : function( node ) |
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44 | { |
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45 | var eChildNode ; |
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46 | |
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47 | while ( (eChildNode = node.firstChild) ) |
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48 | { |
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49 | if ( eChildNode.nodeType == 3 ) |
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50 | { |
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51 | var sTrimmed = eChildNode.nodeValue.LTrim() ; |
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52 | var iOriginalLength = eChildNode.nodeValue.length ; |
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53 | |
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54 | if ( sTrimmed.length == 0 ) |
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55 | { |
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56 | node.removeChild( eChildNode ) ; |
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57 | continue ; |
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58 | } |
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59 | else if ( sTrimmed.length < iOriginalLength ) |
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60 | { |
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61 | eChildNode.splitText( iOriginalLength - sTrimmed.length ) ; |
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62 | node.removeChild( node.firstChild ) ; |
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63 | } |
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64 | } |
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65 | break ; |
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66 | } |
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67 | }, |
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68 | |
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69 | RTrimNode : function( node, ignoreEndBRs ) |
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70 | { |
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71 | var eChildNode ; |
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72 | |
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73 | while ( (eChildNode = node.lastChild) ) |
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74 | { |
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75 | switch ( eChildNode.nodeType ) |
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76 | { |
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77 | case 1 : |
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78 | if ( eChildNode.nodeName.toUpperCase() == 'BR' && ( ignoreEndBRs || eChildNode.getAttribute( 'type', 2 ) == '_moz' ) ) |
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79 | { |
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80 | node.removeChild( eChildNode ) ; |
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81 | continue ; |
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82 | } |
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83 | break ; |
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84 | |
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85 | case 3 : |
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86 | var sTrimmed = eChildNode.nodeValue.RTrim() ; |
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87 | var iOriginalLength = eChildNode.nodeValue.length ; |
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88 | |
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89 | if ( sTrimmed.length == 0 ) |
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90 | { |
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91 | // If the trimmed text node is empty, just remove it. |
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92 | |
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93 | // Use "eChildNode.parentNode" instead of "node" to avoid IE bug (#81). |
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94 | eChildNode.parentNode.removeChild( eChildNode ) ; |
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95 | continue ; |
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96 | } |
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97 | else if ( sTrimmed.length < iOriginalLength ) |
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98 | { |
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99 | // If the trimmed text lenght is less than the original |
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100 | // lenght, strip all spaces from the end by splitting |
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101 | // the text and removing the resulting useless node. |
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102 | |
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103 | eChildNode.splitText( sTrimmed.length ) ; |
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104 | // Use "node.lastChild.parentNode" instead of "node" to avoid IE bug (#81). |
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105 | node.lastChild.parentNode.removeChild( node.lastChild ) ; |
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106 | } |
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107 | } |
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108 | break ; |
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109 | } |
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110 | }, |
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111 | |
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112 | RemoveNode : function( node, excludeChildren ) |
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113 | { |
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114 | if ( excludeChildren ) |
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115 | { |
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116 | // Move all children before the node. |
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117 | var eChild ; |
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118 | while ( (eChild = node.firstChild) ) |
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119 | node.parentNode.insertBefore( node.removeChild( eChild ), node ) ; |
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120 | } |
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121 | |
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122 | return node.parentNode.removeChild( node ) ; |
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123 | }, |
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124 | |
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125 | GetFirstChild : function( node, childNames ) |
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126 | { |
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127 | // If childNames is a string, transform it in a Array. |
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128 | if ( typeof ( childNames ) == 'string' ) |
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129 | childNames = [ childNames ] ; |
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130 | |
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131 | var eChild = node.firstChild ; |
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132 | while( eChild ) |
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133 | { |
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134 | if ( eChild.nodeType == 1 && eChild.tagName.Equals.apply( eChild.tagName, childNames ) ) |
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135 | return eChild ; |
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136 | |
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137 | eChild = eChild.nextSibling ; |
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138 | } |
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139 | |
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140 | return null ; |
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141 | }, |
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142 | |
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143 | GetLastChild : function( node, childNames ) |
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144 | { |
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145 | // If childNames is a string, transform it in a Array. |
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146 | if ( typeof ( childNames ) == 'string' ) |
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147 | childNames = [ childNames ] ; |
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148 | |
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149 | var eChild = node.lastChild ; |
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150 | while( eChild ) |
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151 | { |
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152 | if ( eChild.nodeType == 1 && ( !childNames || eChild.tagName.Equals( childNames ) ) ) |
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153 | return eChild ; |
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154 | |
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155 | eChild = eChild.previousSibling ; |
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156 | } |
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157 | |
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158 | return null ; |
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159 | }, |
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160 | |
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161 | /* |
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162 | * Gets the previous element (nodeType=1) in the source order. Returns |
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163 | * "null" If no element is found. |
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164 | * @param {Object} currentNode The node to start searching from. |
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165 | * @param {Boolean} ignoreSpaceTextOnly Sets how text nodes will be |
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166 | * handled. If set to "true", only white spaces text nodes |
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167 | * will be ignored, while non white space text nodes will stop |
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168 | * the search, returning null. If "false" or ommitted, all |
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169 | * text nodes are ignored. |
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170 | * @param {string[]} stopSearchElements An array of element names that |
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171 | * will cause the search to stop when found, returning null. |
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172 | * May be ommitted (or null). |
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173 | * @param {string[]} ignoreElements An array of element names that |
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174 | * must be ignored during the search. |
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175 | */ |
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176 | GetPreviousSourceElement : function( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) |
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177 | { |
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178 | if ( !currentNode ) |
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179 | return null ; |
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180 | |
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181 | if ( stopSearchElements && currentNode.nodeType == 1 && currentNode.nodeName.IEquals( stopSearchElements ) ) |
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182 | return null ; |
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183 | |
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184 | if ( currentNode.previousSibling ) |
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185 | currentNode = currentNode.previousSibling ; |
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186 | else |
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187 | return this.GetPreviousSourceElement( currentNode.parentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ; |
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188 | |
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189 | while ( currentNode ) |
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190 | { |
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191 | if ( currentNode.nodeType == 1 ) |
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192 | { |
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193 | if ( stopSearchElements && currentNode.nodeName.IEquals( stopSearchElements ) ) |
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194 | break ; |
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195 | |
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196 | if ( !ignoreElements || !currentNode.nodeName.IEquals( ignoreElements ) ) |
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197 | return currentNode ; |
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198 | } |
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199 | else if ( ignoreSpaceTextOnly && currentNode.nodeType == 3 && currentNode.nodeValue.RTrim().length > 0 ) |
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200 | break ; |
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201 | |
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202 | if ( currentNode.lastChild ) |
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203 | currentNode = currentNode.lastChild ; |
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204 | else |
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205 | return this.GetPreviousSourceElement( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ; |
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206 | } |
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207 | |
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208 | return null ; |
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209 | }, |
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210 | |
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211 | /* |
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212 | * Gets the next element (nodeType=1) in the source order. Returns |
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213 | * "null" If no element is found. |
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214 | * @param {Object} currentNode The node to start searching from. |
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215 | * @param {Boolean} ignoreSpaceTextOnly Sets how text nodes will be |
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216 | * handled. If set to "true", only white spaces text nodes |
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217 | * will be ignored, while non white space text nodes will stop |
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218 | * the search, returning null. If "false" or ommitted, all |
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219 | * text nodes are ignored. |
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220 | * @param {string[]} stopSearchElements An array of element names that |
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221 | * will cause the search to stop when found, returning null. |
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222 | * May be ommitted (or null). |
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223 | * @param {string[]} ignoreElements An array of element names that |
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224 | * must be ignored during the search. |
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225 | */ |
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226 | GetNextSourceElement : function( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) |
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227 | { |
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228 | if ( !currentNode ) |
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229 | return null ; |
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230 | |
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231 | if ( currentNode.nextSibling ) |
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232 | currentNode = currentNode.nextSibling ; |
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233 | else |
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234 | return this.GetNextSourceElement( currentNode.parentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ; |
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235 | |
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236 | while ( currentNode ) |
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237 | { |
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238 | if ( currentNode.nodeType == 1 ) |
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239 | { |
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240 | if ( stopSearchElements && currentNode.nodeName.IEquals( stopSearchElements ) ) |
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241 | break ; |
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242 | |
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243 | if ( !ignoreElements || !currentNode.nodeName.IEquals( ignoreElements ) ) |
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244 | return currentNode ; |
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245 | } |
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246 | else if ( ignoreSpaceTextOnly && currentNode.nodeType == 3 && currentNode.nodeValue.RTrim().length > 0 ) |
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247 | break ; |
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248 | |
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249 | if ( currentNode.firstChild ) |
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250 | currentNode = currentNode.firstChild ; |
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251 | else |
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252 | return this.GetNextSourceElement( currentNode, ignoreSpaceTextOnly, stopSearchElements, ignoreElements ) ; |
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253 | } |
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254 | |
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255 | return null ; |
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256 | }, |
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257 | |
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258 | // Inserts a element after a existing one. |
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259 | InsertAfterNode : function( existingNode, newNode ) |
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260 | { |
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261 | return existingNode.parentNode.insertBefore( newNode, existingNode.nextSibling ) ; |
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262 | }, |
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263 | |
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264 | GetParents : function( node ) |
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265 | { |
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266 | var parents = new Array() ; |
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267 | |
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268 | while ( node ) |
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269 | { |
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270 | parents.splice( 0, 0, node ) ; |
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271 | node = node.parentNode ; |
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272 | } |
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273 | |
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274 | return parents ; |
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275 | }, |
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276 | |
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277 | GetIndexOf : function( node ) |
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278 | { |
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279 | var currentNode = node.parentNode ? node.parentNode.firstChild : null ; |
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280 | var currentIndex = -1 ; |
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281 | |
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282 | while ( currentNode ) |
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283 | { |
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284 | currentIndex++ ; |
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285 | |
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286 | if ( currentNode == node ) |
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287 | return currentIndex ; |
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288 | |
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289 | currentNode = currentNode.nextSibling ; |
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290 | } |
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291 | |
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292 | return -1 ; |
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293 | } |
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294 | } ; |
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