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Side by Side Diff: sky/sdk/lib/framework/components2/fixed_height_scrollable.dart

Issue 1161323004: Export Point, Size, Rect, Color, Paint, Path, BoxDecoration, Border, BorderSide, EdgeDims, and Flex… (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: without analyser changes Created 5 years, 6 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 import '../animation/scroll_behavior.dart'; 5 import '../animation/scroll_behavior.dart';
6 import '../fn2.dart'; 6 import '../fn2.dart';
7 import 'dart:async'; 7 import 'dart:async';
8 import 'dart:math' as math; 8 import 'dart:math' as math;
9 import 'dart:sky' as sky;
10 import 'package:vector_math/vector_math.dart'; 9 import 'package:vector_math/vector_math.dart';
11 import 'scrollable.dart'; 10 import 'scrollable.dart';
12 11
13 abstract class FixedHeightScrollable extends Scrollable { 12 abstract class FixedHeightScrollable extends Scrollable {
14 FixedHeightScrollable({ this.itemHeight, Object key }) : super(key: key) { 13 FixedHeightScrollable({ this.itemHeight, Object key }) : super(key: key) {
15 assert(itemHeight != null); 14 assert(itemHeight != null);
16 } 15 }
17 16
18 ScrollBehavior createScrollBehavior() => new OverscrollBehavior(); 17 ScrollBehavior createScrollBehavior() => new OverscrollBehavior();
19 OverscrollBehavior get scrollBehavior => super.scrollBehavior as OverscrollBeh avior; 18 OverscrollBehavior get scrollBehavior => super.scrollBehavior as OverscrollBeh avior;
20 19
21 double _height; 20 double _height;
22 final double itemHeight; 21 final double itemHeight;
23 22
24 int _itemCount = 0; 23 int _itemCount = 0;
25 int get itemCount => _itemCount; 24 int get itemCount => _itemCount;
26 void set itemCount (int value) { 25 void set itemCount (int value) {
27 if (_itemCount != value) { 26 if (_itemCount != value) {
28 _itemCount = value; 27 _itemCount = value;
29 scrollBehavior.contentsHeight = itemHeight * _itemCount; 28 scrollBehavior.contentsHeight = itemHeight * _itemCount;
30 } 29 }
31 } 30 }
32 31
33 void _handleSizeChanged(sky.Size newSize) { 32 void _handleSizeChanged(Size newSize) {
34 setState(() { 33 setState(() {
35 _height = newSize.height; 34 _height = newSize.height;
36 scrollBehavior.containerHeight = _height; 35 scrollBehavior.containerHeight = _height;
37 }); 36 });
38 } 37 }
39 38
40 UINode buildContent() { 39 UINode buildContent() {
41 var itemNumber = 0; 40 var itemNumber = 0;
42 var itemCount = 0; 41 var itemCount = 0;
43 42
(...skipping 24 matching lines...) Expand all
68 transform: transform, 67 transform: transform,
69 child: new BlockContainer( 68 child: new BlockContainer(
70 children: buildItems(itemNumber, itemCount)) 69 children: buildItems(itemNumber, itemCount))
71 ) 70 )
72 ) 71 )
73 ); 72 );
74 } 73 }
75 74
76 List<UINode> buildItems(int start, int count); 75 List<UINode> buildItems(int start, int count);
77 } 76 }
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