[3019] | 1 | /*
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| 2 | Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
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| 3 | For licensing, see LICENSE.html or http://ckeditor.com/license
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| 4 | */
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| 5 |
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| 6 | (function()
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| 7 | {
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| 8 | var blurCommand =
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| 9 | {
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| 10 | exec : function( editor )
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| 11 | {
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| 12 | editor.container.focusNext( true );
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| 13 | }
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| 14 | };
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| 15 |
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| 16 | var blurBackCommand =
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| 17 | {
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| 18 | exec : function( editor )
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| 19 | {
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| 20 | editor.container.focusPrevious( true );
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| 21 | }
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| 22 | };
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| 23 |
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| 24 | CKEDITOR.plugins.add( 'tab',
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| 25 | {
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| 26 | requires : [ 'keystrokes' ],
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| 27 |
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| 28 | init : function( editor )
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| 29 | {
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| 30 | // Register the keystrokes.
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| 31 | var keystrokes = editor.keystrokeHandler.keystrokes;
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| 32 | keystrokes[ 9 /* TAB */ ] = 'tab';
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| 33 | keystrokes[ CKEDITOR.SHIFT + 9 /* TAB */ ] = 'shiftTab';
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| 34 |
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| 35 | var tabSpaces = editor.config.tabSpaces,
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| 36 | tabText = '';
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| 37 |
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| 38 | while ( tabSpaces-- )
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| 39 | tabText += '\xa0';
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| 40 |
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| 41 | // Register the "tab" and "shiftTab" commands.
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| 42 | editor.addCommand( 'tab',
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| 43 | {
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| 44 | exec : function( editor )
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| 45 | {
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| 46 | // Fire the "tab" event, making it possible to
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| 47 | // customize the TAB key behavior on specific cases.
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| 48 | if ( !editor.fire( 'tab' ) )
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| 49 | {
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| 50 | if ( tabText.length > 0 )
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| 51 | editor.insertHtml( tabText );
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| 52 | else
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| 53 | {
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| 54 | // All browsers jump to the next field on TAB,
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| 55 | // except Safari, so we have to do that manually
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| 56 | // here.
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| 57 | /// https://bugs.webkit.org/show_bug.cgi?id=20597
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| 58 | return editor.execCommand( 'blur' );
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| 59 | }
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| 60 | }
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| 61 |
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| 62 | return true;
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| 63 | }
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| 64 | });
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| 65 |
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| 66 | editor.addCommand( 'shiftTab',
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| 67 | {
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| 68 | exec : function( editor )
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| 69 | {
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| 70 | // Fire the "tab" event, making it possible to
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| 71 | // customize the TAB key behavior on specific cases.
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| 72 | if ( !editor.fire( 'shiftTab' ) )
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| 73 | return editor.execCommand( 'blurBack' );
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| 74 |
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| 75 | return true;
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| 76 | }
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| 77 | });
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| 78 |
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| 79 | editor.addCommand( 'blur', blurCommand );
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| 80 | editor.addCommand( 'blurBack', blurBackCommand );
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| 81 | }
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| 82 | });
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| 83 | })();
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| 84 |
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| 85 | /**
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| 86 | * Moves the UI focus to the element following this element in the tabindex
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| 87 | * order.
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| 88 | * @example
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| 89 | * var element = CKEDITOR.document.getById( 'example' );
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| 90 | * element.focusNext();
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| 91 | */
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| 92 | CKEDITOR.dom.element.prototype.focusNext = function( ignoreChildren )
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| 93 | {
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| 94 | var $ = this.$,
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| 95 | curTabIndex = this.getTabIndex(),
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| 96 | passedCurrent, enteredCurrent,
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| 97 | elected, electedTabIndex,
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| 98 | element, elementTabIndex;
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| 99 |
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| 100 | if ( curTabIndex <= 0 )
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| 101 | {
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| 102 | // If this element has tabindex <= 0 then we must simply look for any
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| 103 | // element following it containing tabindex=0.
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| 104 |
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| 105 | element = this.getNextSourceNode( ignoreChildren, CKEDITOR.NODE_ELEMENT );
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| 106 |
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| 107 | while( element )
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| 108 | {
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| 109 | if ( element.isVisible() && element.getTabIndex() === 0 )
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| 110 | {
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| 111 | elected = element;
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| 112 | break;
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| 113 | }
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| 114 |
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| 115 | element = element.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT );
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| 116 | }
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| 117 | }
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| 118 | else
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| 119 | {
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| 120 | // If this element has tabindex > 0 then we must look for:
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| 121 | // 1. An element following this element with the same tabindex.
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| 122 | // 2. The first element in source other with the lowest tabindex
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| 123 | // that is higher than this element tabindex.
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| 124 | // 3. The first element with tabindex=0.
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| 125 |
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| 126 | element = this.getDocument().getBody().getFirst();
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| 127 |
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| 128 | while( ( element = element.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT ) ) )
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| 129 | {
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| 130 | if ( !passedCurrent )
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| 131 | {
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| 132 | if ( !enteredCurrent && element.equals( this ) )
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| 133 | {
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| 134 | enteredCurrent = true;
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| 135 |
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| 136 | // Ignore this element, if required.
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| 137 | if ( ignoreChildren )
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| 138 | {
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| 139 | if ( !( element = element.getNextSourceNode( true, CKEDITOR.NODE_ELEMENT ) ) )
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| 140 | break;
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| 141 | passedCurrent = 1;
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| 142 | }
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| 143 | }
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| 144 | else if ( enteredCurrent && !this.contains( element ) )
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| 145 | passedCurrent = 1;
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| 146 | }
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| 147 |
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| 148 | if ( !element.isVisible() || ( elementTabIndex = element.getTabIndex() ) < 0 )
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| 149 | continue;
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| 150 |
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| 151 | if ( passedCurrent && elementTabIndex == curTabIndex )
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| 152 | {
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| 153 | elected = element;
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| 154 | break;
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| 155 | }
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| 156 |
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| 157 | if ( elementTabIndex > curTabIndex && ( !elected || !electedTabIndex || elementTabIndex < electedTabIndex ) )
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| 158 | {
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| 159 | elected = element;
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| 160 | electedTabIndex = elementTabIndex;
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| 161 | }
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| 162 | else if ( !elected && elementTabIndex === 0 )
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| 163 | {
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| 164 | elected = element;
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| 165 | electedTabIndex = elementTabIndex;
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| 166 | }
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | if ( elected )
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| 171 | elected.focus();
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| 172 | };
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| 173 |
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| 174 | /**
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| 175 | * Moves the UI focus to the element before this element in the tabindex order.
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| 176 | * @example
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| 177 | * var element = CKEDITOR.document.getById( 'example' );
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| 178 | * element.focusPrevious();
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| 179 | */
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| 180 | CKEDITOR.dom.element.prototype.focusPrevious = function( ignoreChildren )
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| 181 | {
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| 182 | var $ = this.$,
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| 183 | curTabIndex = this.getTabIndex(),
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| 184 | passedCurrent, enteredCurrent,
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| 185 | elected,
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| 186 | electedTabIndex = 0,
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| 187 | elementTabIndex;
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| 188 |
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| 189 | var element = this.getDocument().getBody().getLast();
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| 190 |
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| 191 | while( ( element = element.getPreviousSourceNode( false, CKEDITOR.NODE_ELEMENT ) ) )
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| 192 | {
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| 193 | if ( !passedCurrent )
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| 194 | {
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| 195 | if ( !enteredCurrent && element.equals( this ) )
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| 196 | {
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| 197 | enteredCurrent = true;
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| 198 |
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| 199 | // Ignore this element, if required.
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| 200 | if ( ignoreChildren )
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| 201 | {
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| 202 | if ( !( element = element.getPreviousSourceNode( true, CKEDITOR.NODE_ELEMENT ) ) )
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| 203 | break;
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| 204 | passedCurrent = 1;
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| 205 | }
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| 206 | }
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| 207 | else if ( enteredCurrent && !this.contains( element ) )
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| 208 | passedCurrent = 1;
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| 209 | }
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| 210 |
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| 211 | if ( !element.isVisible() || ( elementTabIndex = element.getTabIndex() ) < 0 )
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| 212 | continue;
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| 213 |
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| 214 | if ( curTabIndex <= 0 )
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| 215 | {
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| 216 | // If this element has tabindex <= 0 then we must look for:
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| 217 | // 1. An element before this one containing tabindex=0.
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| 218 | // 2. The last element with the highest tabindex.
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| 219 |
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| 220 | if ( passedCurrent && elementTabIndex === 0 )
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| 221 | {
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| 222 | elected = element;
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| 223 | break;
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| 224 | }
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| 225 |
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| 226 | if ( elementTabIndex > electedTabIndex )
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| 227 | {
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| 228 | elected = element;
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| 229 | electedTabIndex = elementTabIndex;
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| 230 | }
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| 231 | }
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| 232 | else
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| 233 | {
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| 234 | // If this element has tabindex > 0 we must look for:
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| 235 | // 1. An element preceeding this one, with the same tabindex.
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| 236 | // 2. The last element in source other with the highest tabindex
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| 237 | // that is lower than this element tabindex.
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| 238 |
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| 239 | if ( passedCurrent && elementTabIndex == curTabIndex )
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| 240 | {
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| 241 | elected = element;
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| 242 | break;
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| 243 | }
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| 244 |
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| 245 | if ( elementTabIndex < curTabIndex && ( !elected || elementTabIndex > electedTabIndex ) )
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| 246 | {
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| 247 | elected = element;
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| 248 | electedTabIndex = elementTabIndex;
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| 249 | }
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| 250 | }
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| 251 | }
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| 252 |
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| 253 | if ( elected )
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| 254 | elected.focus();
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| 255 | };
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| 256 |
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| 257 | /**
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| 258 | * Intructs the editor to add a number of spaces (&nbsp;) to the text when
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| 259 | * hitting the TAB key. If set to zero, the TAB key will be used to move the
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| 260 | * cursor focus to the next element in the page, out of the editor focus.
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| 261 | * @type Number
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| 262 | * @default 0
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| 263 | * @example
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| 264 | * config.tabSpaces = 4;
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| 265 | */
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| 266 | CKEDITOR.config.tabSpaces = 0 ;
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