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 | * Class for working with a selection range, much like the W3C DOM Range, but
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22 | * it is not intended to be an implementation of the W3C interface.
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23 | * (IE Implementation)
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24 | */
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25 |
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26 | FCKDomRange.prototype.MoveToSelection = function()
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27 | {
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28 | this.Release( true ) ;
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29 |
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30 | this._Range = new FCKW3CRange( this.Window.document ) ;
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31 |
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32 | var oSel = this.Window.document.selection ;
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33 |
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34 | if ( oSel.type != 'Control' )
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35 | {
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36 | var eMarkerStart = this._GetSelectionMarkerTag( true ) ;
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37 | var eMarkerEnd = this._GetSelectionMarkerTag( false ) ;
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38 |
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39 | if ( !eMarkerStart && !eMarkerEnd )
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40 | {
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41 | this._Range.setStart( this.Window.document.body, 0 ) ;
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42 | this._UpdateElementInfo() ;
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43 | return ;
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44 | }
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45 |
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46 | // Set the start boundary.
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47 | this._Range.setStart( eMarkerStart.parentNode, FCKDomTools.GetIndexOf( eMarkerStart ) ) ;
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48 | eMarkerStart.parentNode.removeChild( eMarkerStart ) ;
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49 |
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50 | // Set the end boundary.
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51 | this._Range.setEnd( eMarkerEnd.parentNode, FCKDomTools.GetIndexOf( eMarkerEnd ) ) ;
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52 | eMarkerEnd.parentNode.removeChild( eMarkerEnd ) ;
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53 |
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54 | this._UpdateElementInfo() ;
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55 | }
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56 | else
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57 | {
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58 | var oControl = oSel.createRange().item(0) ;
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59 |
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60 | if ( oControl )
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61 | {
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62 | this._Range.setStartBefore( oControl ) ;
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63 | this._Range.setEndAfter( oControl ) ;
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64 | this._UpdateElementInfo() ;
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65 | }
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66 | }
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67 | }
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68 |
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69 | FCKDomRange.prototype.Select = function( forceExpand )
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70 | {
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71 | if ( this._Range )
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72 | this.SelectBookmark( this.CreateBookmark( true ), forceExpand ) ;
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73 | }
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74 |
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75 | // Not compatible with bookmark created with CreateBookmark2.
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76 | // The bookmark nodes will be deleted from the document.
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77 | FCKDomRange.prototype.SelectBookmark = function( bookmark, forceExpand )
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78 | {
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79 | var bIsCollapsed = this.CheckIsCollapsed() ;
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80 | var bIsStartMarkerAlone ;
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81 | var dummySpan ;
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82 |
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83 | // Create marker tags for the start and end boundaries.
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84 | var eStartMarker = this.GetBookmarkNode( bookmark, true ) ;
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85 |
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86 | if ( !eStartMarker )
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87 | return ;
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88 |
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89 | var eEndMarker ;
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90 | if ( !bIsCollapsed )
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91 | eEndMarker = this.GetBookmarkNode( bookmark, false ) ;
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92 |
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93 | // Create the main range which will be used for the selection.
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94 | var oIERange = this.Window.document.body.createTextRange() ;
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95 |
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96 | // Position the range at the start boundary.
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97 | oIERange.moveToElementText( eStartMarker ) ;
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98 | oIERange.moveStart( 'character', 1 ) ;
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99 |
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100 | if ( eEndMarker )
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101 | {
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102 | // Create a tool range for the end.
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103 | var oIERangeEnd = this.Window.document.body.createTextRange() ;
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104 |
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105 | // Position the tool range at the end.
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106 | oIERangeEnd.moveToElementText( eEndMarker ) ;
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107 |
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108 | // Move the end boundary of the main range to match the tool range.
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109 | oIERange.setEndPoint( 'EndToEnd', oIERangeEnd ) ;
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110 | oIERange.moveEnd( 'character', -1 ) ;
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111 | }
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112 | else
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113 | {
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114 | bIsStartMarkerAlone = forceExpand || !eStartMarker.previousSibling || eStartMarker.previousSibling.nodeName.toLowerCase() == 'br';
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115 |
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116 | // Append a temporary <span></span> before the selection.
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117 | // This is needed to avoid IE destroying selections inside empty
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118 | // inline elements, like <b></b> (#253).
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119 | // It is also needed when placing the selection right after an inline
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120 | // element to avoid the selection moving inside of it.
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121 | dummySpan = this.Window.document.createElement( 'span' ) ;
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122 | dummySpan.innerHTML = '' ; // Zero Width No-Break Space (U+FEFF). See #1359.
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123 | eStartMarker.parentNode.insertBefore( dummySpan, eStartMarker ) ;
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124 |
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125 | if ( bIsStartMarkerAlone )
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126 | {
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127 | // To expand empty blocks or line spaces after <br>, we need
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128 | // instead to have any char, which will be later deleted using the
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129 | // selection.
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130 | // \ufeff = Zero Width No-Break Space (U+FEFF). See #1359.
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131 | eStartMarker.parentNode.insertBefore( this.Window.document.createTextNode( '\ufeff' ), eStartMarker ) ;
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132 | }
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133 | }
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134 |
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135 | if ( !this._Range )
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136 | this._Range = this.CreateRange() ;
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137 |
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138 | // Remove the markers (reset the position, because of the changes in the DOM tree).
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139 | this._Range.setStartBefore( eStartMarker ) ;
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140 | eStartMarker.parentNode.removeChild( eStartMarker ) ;
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141 |
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142 | if ( bIsCollapsed )
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143 | {
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144 | if ( bIsStartMarkerAlone )
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145 | {
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146 | // Move the selection start to include the temporary .
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147 | oIERange.moveStart( 'character', -1 ) ;
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148 |
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149 | oIERange.select() ;
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150 |
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151 | // Remove our temporary stuff.
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152 | this.Window.document.selection.clear() ;
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153 | }
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154 | else
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155 | oIERange.select() ;
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156 |
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157 | FCKDomTools.RemoveNode( dummySpan ) ;
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158 | }
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159 | else
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160 | {
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161 | this._Range.setEndBefore( eEndMarker ) ;
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162 | eEndMarker.parentNode.removeChild( eEndMarker ) ;
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163 | oIERange.select() ;
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164 | }
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165 | }
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166 |
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167 | FCKDomRange.prototype._GetSelectionMarkerTag = function( toStart )
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168 | {
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169 | var doc = this.Window.document ;
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170 | var selection = doc.selection ;
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171 |
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172 | // Get a range for the start boundary.
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173 | var oRange ;
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174 |
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175 | // IE may throw an "unspecified error" on some cases (it happened when
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176 | // loading _samples/default.html), so try/catch.
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177 | try
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178 | {
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179 | oRange = selection.createRange() ;
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180 | }
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181 | catch (e)
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182 | {
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183 | return null ;
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184 | }
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185 |
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186 | // IE might take the range object to the main window instead of inside the editor iframe window.
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187 | // This is known to happen when the editor window has not been selected before (See #933).
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188 | // We need to avoid that.
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189 | if ( oRange.parentElement().document != doc )
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190 | return null ;
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191 |
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192 | oRange.collapse( toStart === true ) ;
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193 |
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194 | // Paste a marker element at the collapsed range and get it from the DOM.
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195 | var sMarkerId = 'fck_dom_range_temp_' + (new Date()).valueOf() + '_' + Math.floor(Math.random()*1000) ;
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196 | oRange.pasteHTML( '<span id="' + sMarkerId + '"></span>' ) ;
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197 |
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198 | return doc.getElementById( sMarkerId ) ;
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199 | }
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