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1 // | 1 // |
2 // Copyright 2014 Google Inc. All rights reserved. | 2 // Copyright 2014 Google Inc. All rights reserved. |
3 // | 3 // |
4 // Use of this source code is governed by a BSD-style | 4 // Use of this source code is governed by a BSD-style |
5 // license that can be found in the LICENSE file or at | 5 // license that can be found in the LICENSE file or at |
6 // https://developers.google.com/open-source/licenses/bsd | 6 // https://developers.google.com/open-source/licenses/bsd |
7 // | 7 // |
8 | 8 |
9 part of charted.charts; | 9 part of charted.charts; |
10 | 10 |
11 /// | 11 /// |
12 /// Model that maintains state of each visualization item. Each entry in the | 12 /// Model that maintains state of each visualization item. Each entry in the |
13 /// legend is considered one visualization item. | 13 /// legend is considered one visualization item. |
14 /// - In [CartesianArea] it is always a column. | 14 /// - In [CartesianArea] it is always a column. |
15 /// - In [LayoutArea] renders choose either columns or rows. | 15 /// - In [LayoutArea] renders choose either columns or rows. |
16 /// | 16 /// |
17 class DefaultChartStateImpl extends ChangeNotifier implements ChartState { | 17 class DefaultChartStateImpl extends Observable implements ChartState { |
18 final bool isMultiSelect; | 18 final bool isMultiSelect; |
19 final bool isMultiHighlight; | 19 final bool isMultiHighlight; |
20 final bool isSelectOrHighlight; | 20 final bool isSelectOrHighlight; |
21 final bool supportColumnSelection; | 21 final bool supportColumnSelection; |
22 final bool supportColumnPreview; | 22 final bool supportColumnPreview; |
23 final bool supportValueHighlight; | 23 final bool supportValueHighlight; |
24 final bool supportValueHover; | 24 final bool supportValueHover; |
25 | 25 |
26 LinkedHashSet<int> hidden = new LinkedHashSet<int>(); | 26 LinkedHashSet<int> hidden = new LinkedHashSet<int>(); |
27 | 27 |
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124 var item = new Pair<int, int>(column, row); | 124 var item = new Pair<int, int>(column, row); |
125 highlights.remove(item); | 125 highlights.remove(item); |
126 notifyChange(new ChartHighlightChangeRecord(remove: item)); | 126 notifyChange(new ChartHighlightChangeRecord(remove: item)); |
127 } | 127 } |
128 return false; | 128 return false; |
129 } | 129 } |
130 | 130 |
131 bool isHighlighted(int column, int row) => | 131 bool isHighlighted(int column, int row) => |
132 highlights.any((x) => x.first == column && x.last == row); | 132 highlights.any((x) => x.first == column && x.last == row); |
133 } | 133 } |
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