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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library trydart.selection; | 5 library trydart.selection; |
6 | 6 |
7 import 'dart:html' show | 7 import 'dart:html' show |
8 CharacterData, | 8 CharacterData, |
9 Node, | 9 Node, |
10 NodeFilter, | 10 NodeFilter, |
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27 anchorOffset = isCollapsed(selection) ? selection.anchorOffset : -1; | 27 anchorOffset = isCollapsed(selection) ? selection.anchorOffset : -1; |
28 | 28 |
29 Text addNodeFromSubstring(int start, | 29 Text addNodeFromSubstring(int start, |
30 int end, | 30 int end, |
31 List<Node> nodes, | 31 List<Node> nodes, |
32 [Decoration decoration]) { | 32 [Decoration decoration]) { |
33 if (start == end) return null; | 33 if (start == end) return null; |
34 | 34 |
35 Text textNode = new Text(text.substring(start, end)); | 35 Text textNode = new Text(text.substring(start, end)); |
36 | 36 |
37 if (start <= globalOffset && globalOffset < end) { | 37 if (start <= globalOffset && globalOffset <= end) { |
38 anchorNode = textNode; | 38 anchorNode = textNode; |
39 anchorOffset = globalOffset - start; | 39 anchorOffset = globalOffset - start; |
40 } | 40 } |
41 | 41 |
42 nodes.add(decoration == null ? textNode : decoration.applyTo(textNode)); | 42 nodes.add(decoration == null ? textNode : decoration.applyTo(textNode)); |
43 | 43 |
44 return textNode; | 44 return textNode; |
45 } | 45 } |
46 | 46 |
47 void adjust(Selection selection) { | 47 void adjust(Selection selection) { |
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73 | 73 |
74 return -1; | 74 return -1; |
75 } | 75 } |
76 } | 76 } |
77 | 77 |
78 bool isCollapsed(Selection selection) { | 78 bool isCollapsed(Selection selection) { |
79 // Firefox and Chrome don't agree on if the selection is collapsed if there | 79 // Firefox and Chrome don't agree on if the selection is collapsed if there |
80 // is no node selected. | 80 // is no node selected. |
81 return selection.isCollapsed && selection.anchorNode != null; | 81 return selection.isCollapsed && selection.anchorNode != null; |
82 } | 82 } |
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