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