[1575] | 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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