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 | * Active selection functions. (IE specific implementation)
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22 | */
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23 |
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24 | // Get the selection type.
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25 | FCKSelection.GetType = function()
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26 | {
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27 | // It is possible that we can still get a text range object even when type=='None' is returned by IE.
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28 | // So we'd better check the object returned by createRange() rather than by looking at the type.
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29 | try
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30 | {
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31 | var ieType = FCKSelection.GetSelection().type ;
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32 | if ( ieType == 'Control' || ieType == 'Text' )
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33 | return ieType ;
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34 |
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35 | if ( this.GetSelection().createRange().parentElement )
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36 | return 'Text' ;
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37 | }
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38 | catch(e)
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39 | {
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40 | // Nothing to do, it will return None properly.
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41 | }
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42 |
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43 | return 'None' ;
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44 | } ;
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45 |
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46 | // Retrieves the selected element (if any), just in the case that a single
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47 | // element (object like and image or a table) is selected.
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48 | FCKSelection.GetSelectedElement = function()
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49 | {
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50 | if ( this.GetType() == 'Control' )
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51 | {
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52 | var oRange = this.GetSelection().createRange() ;
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53 |
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54 | if ( oRange && oRange.item )
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55 | return this.GetSelection().createRange().item(0) ;
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56 | }
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57 | return null ;
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58 | } ;
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59 |
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60 | FCKSelection.GetParentElement = function()
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61 | {
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62 | switch ( this.GetType() )
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63 | {
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64 | case 'Control' :
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65 | var el = FCKSelection.GetSelectedElement() ;
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66 | return el ? el.parentElement : null ;
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67 |
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68 | case 'None' :
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69 | return null ;
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70 |
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71 | default :
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72 | return this.GetSelection().createRange().parentElement() ;
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73 | }
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74 | } ;
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75 |
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76 | FCKSelection.GetBoundaryParentElement = function( startBoundary )
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77 | {
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78 | switch ( this.GetType() )
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79 | {
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80 | case 'Control' :
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81 | var el = FCKSelection.GetSelectedElement() ;
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82 | return el ? el.parentElement : null ;
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83 |
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84 | case 'None' :
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85 | return null ;
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86 |
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87 | default :
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88 | var doc = FCK.EditorDocument ;
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89 |
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90 | var range = doc.selection.createRange() ;
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91 | range.collapse( startBoundary !== false ) ;
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92 |
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93 | var el = range.parentElement() ;
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94 |
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95 | // It may happen that range is comming from outside "doc", so we
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96 | // must check it (#1204).
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97 | return FCKTools.GetElementDocument( el ) == doc ? el : null ;
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98 | }
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99 | } ;
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100 |
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101 | FCKSelection.SelectNode = function( node )
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102 | {
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103 | FCK.Focus() ;
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104 | this.GetSelection().empty() ;
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105 | var oRange ;
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106 | try
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107 | {
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108 | // Try to select the node as a control.
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109 | oRange = FCK.EditorDocument.body.createControlRange() ;
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110 | oRange.addElement( node ) ;
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111 | oRange.select() ;
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112 | }
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113 | catch(e)
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114 | {
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115 | // If failed, select it as a text range.
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116 | oRange = FCK.EditorDocument.body.createTextRange() ;
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117 | oRange.moveToElementText( node ) ;
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118 | oRange.select() ;
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119 | }
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120 |
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121 | } ;
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122 |
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123 | FCKSelection.Collapse = function( toStart )
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124 | {
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125 | FCK.Focus() ;
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126 | if ( this.GetType() == 'Text' )
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127 | {
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128 | var oRange = this.GetSelection().createRange() ;
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129 | oRange.collapse( toStart == null || toStart === true ) ;
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130 | oRange.select() ;
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131 | }
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132 | } ;
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133 |
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134 | // The "nodeTagName" parameter must be Upper Case.
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135 | FCKSelection.HasAncestorNode = function( nodeTagName )
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136 | {
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137 | var oContainer ;
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138 |
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139 | if ( this.GetSelection().type == "Control" )
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140 | {
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141 | oContainer = this.GetSelectedElement() ;
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142 | }
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143 | else
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144 | {
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145 | var oRange = this.GetSelection().createRange() ;
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146 | oContainer = oRange.parentElement() ;
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147 | }
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148 |
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149 | while ( oContainer )
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150 | {
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151 | if ( oContainer.nodeName.IEquals( nodeTagName ) ) return true ;
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152 | oContainer = oContainer.parentNode ;
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153 | }
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154 |
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155 | return false ;
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156 | } ;
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157 |
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158 | // The "nodeTagName" parameter must be UPPER CASE.
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159 | // It can be also an array of names
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160 | FCKSelection.MoveToAncestorNode = function( nodeTagName )
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161 | {
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162 | var oNode, oRange ;
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163 |
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164 | if ( ! FCK.EditorDocument )
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165 | return null ;
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166 |
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167 | if ( this.GetSelection().type == "Control" )
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168 | {
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169 | oRange = this.GetSelection().createRange() ;
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170 | for ( i = 0 ; i < oRange.length ; i++ )
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171 | {
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172 | if (oRange(i).parentNode)
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173 | {
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174 | oNode = oRange(i).parentNode ;
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175 | break ;
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176 | }
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177 | }
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178 | }
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179 | else
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180 | {
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181 | oRange = this.GetSelection().createRange() ;
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182 | oNode = oRange.parentElement() ;
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183 | }
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184 |
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185 | while ( oNode && !oNode.nodeName.Equals( nodeTagName ) )
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186 | oNode = oNode.parentNode ;
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187 |
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188 | return oNode ;
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189 | } ;
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190 |
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191 | FCKSelection.Delete = function()
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192 | {
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193 | // Gets the actual selection.
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194 | var oSel = this.GetSelection() ;
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195 |
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196 | // Deletes the actual selection contents.
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197 | if ( oSel.type.toLowerCase() != "none" )
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198 | {
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199 | oSel.clear() ;
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200 | }
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201 |
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202 | return oSel ;
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203 | } ;
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204 |
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205 | /**
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206 | * Returns the native selection object.
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207 | */
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208 | FCKSelection.GetSelection = function()
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209 | {
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210 | this.Restore() ;
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211 | return FCK.EditorDocument.selection ;
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212 | }
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213 |
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214 | FCKSelection.Save = function( lock )
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215 | {
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216 | var editorDocument = FCK.EditorDocument ;
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217 |
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218 | if ( !editorDocument )
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219 | return ;
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220 |
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221 | // Avoid saving again a selection while a dialog is open #2616
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222 | if ( this.locked )
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223 | return ;
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224 | this.locked = !!lock ;
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225 |
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226 | var selection = editorDocument.selection ;
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227 | var range ;
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228 |
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229 | if ( selection )
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230 | {
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231 | // The call might fail if the document doesn't have the focus (#1801),
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232 | // but we don't want to modify the current selection (#2495) with a call to FCK.Focus() ;
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233 | try {
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234 | range = selection.createRange() ;
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235 | }
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236 | catch(e) {}
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237 |
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238 | // Ensure that the range comes from the editor document.
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239 | if ( range )
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240 | {
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241 | if ( range.parentElement && FCKTools.GetElementDocument( range.parentElement() ) != editorDocument )
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242 | range = null ;
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243 | else if ( range.item && FCKTools.GetElementDocument( range.item(0) )!= editorDocument )
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244 | range = null ;
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245 | }
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246 | }
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247 |
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248 | this.SelectionData = range ;
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249 | }
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250 |
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251 | FCKSelection._GetSelectionDocument = function( selection )
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252 | {
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253 | var range = selection.createRange() ;
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254 | if ( !range )
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255 | return null;
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256 | else if ( range.item )
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257 | return FCKTools.GetElementDocument( range.item( 0 ) ) ;
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258 | else
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259 | return FCKTools.GetElementDocument( range.parentElement() ) ;
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260 | }
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261 |
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262 | FCKSelection.Restore = function()
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263 | {
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264 | if ( this.SelectionData )
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265 | {
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266 | FCK.IsSelectionChangeLocked = true ;
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267 |
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268 | try
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269 | {
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270 | // Don't repeat the restore process if the editor document is already selected.
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271 | if ( String( this._GetSelectionDocument( FCK.EditorDocument.selection ).body.contentEditable ) == 'true' )
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272 | {
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273 | FCK.IsSelectionChangeLocked = false ;
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274 | return ;
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275 | }
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276 | this.SelectionData.select() ;
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277 | }
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278 | catch ( e ) {}
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279 |
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280 | FCK.IsSelectionChangeLocked = false ;
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281 | }
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282 | }
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283 |
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284 | FCKSelection.Release = function()
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285 | {
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286 | this.locked = false ;
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287 | delete this.SelectionData ;
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288 | }
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