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
use crate::{
elements::{Element, ListViewElement},
foundation::{Id, Key, WidgetProperties},
gestures::DragStartBehavior,
painting::{EdgeInsetsGeometry, NoneEdgeInsetsGeometry, Axis},
ui::Clip,
};
use super::{NoneWidget, Widget, BuildContext, ScrollController};
pub type IndexedWidgetBuilder = Box<dyn Fn(BuildContext, usize) -> Box<dyn Widget>>;
// Creates a scrollable, linear array of widgets that are created on demand. [...]
pub struct ListViewBuilder {
pub key: Key,
pub scroll_direction: Axis, // = Axis.vertical,
pub reverse: bool, // = false,
pub controller: ScrollController,
pub primary: bool,
// pub physics: ScrollPhysics,
pub shrink_wrap: bool, // = false,
pub padding: Box<dyn EdgeInsetsGeometry>,
pub item_extent: f32,
pub prototype_item: Box<dyn Widget>,
pub item_builder: IndexedWidgetBuilder,
pub item_count: usize,
pub add_automatic_keep_alives: bool, // = true,
pub add_repaint_boundaries: bool, // = true,
pub add_semantic_indexes: bool, // = true,
pub cache_extent: f32,
pub semantic_child_count: usize,
pub drag_start_behavior: DragStartBehavior, // = DragStartBehavior.start,
// pub keyboard_dismiss_behavior: ScrollViewKeyboardDismissBehavior, // = ScrollViewKeyboardDismissBehavior.manual,
pub restoration_id: String,
pub clip_behavior: Clip, // = Clip.hardEdge
}
// Creates a scrollable, linear array of widgets with a custom child model. [...]
pub struct ListViewCustom {
// Key? key,
// Axis scrollDirection = Axis.vertical,
// bool reverse = false,
// ScrollController? controller,
// bool? primary,
// ScrollPhysics? physics,
// bool shrinkWrap = false,
// EdgeInsetsGeometry? padding,
// double? itemExtent,
// Widget? prototypeItem,
// required SliverChildDelegate childrenDelegate,
// double? cacheExtent,
// int? semanticChildCount,
// DragStartBehavior dragStartBehavior = DragStartBehavior.start,
// ScrollViewKeyboardDismissBehavior keyboardDismissBehavior = ScrollViewKeyboardDismissBehavior.manual,
// String? restorationId,
// Clip clipBehavior = Clip.hardEdge
}
// Creates a fixed-length scrollable linear array of list "items" separated by list item "separators". [...]
pub struct ListViewSeparated {
// Key? key,
// Axis scrollDirection = Axis.vertical,
// bool reverse = false,
// ScrollController? controller,
// bool? primary,
// ScrollPhysics? physics,
// bool shrinkWrap = false,
// EdgeInsetsGeometry? padding,
// required IndexedWidgetBuilder itemBuilder,
// required IndexedWidgetBuilder separatorBuilder,
// required int itemCount,
// bool addAutomaticKeepAlives = true,
// bool addRepaintBoundaries = true,
// bool addSemanticIndexes = true,
// double? cacheExtent,
// DragStartBehavior dragStartBehavior = DragStartBehavior.start,
// ScrollViewKeyboardDismissBehavior keyboardDismissBehavior = ScrollViewKeyboardDismissBehavior.manual,
// String? restorationId,
// Clip clipBehavior = Clip.hardEdge
}
pub struct ListView {
pub key: Key,
// pub scroll_direction: Axis, // = Axis.vertical,
pub reverse: bool, // = false
// pub controller: ScrollController,
pub primary: bool,
// pub physics: ScrollPhysics,
pub shrink_wrap: bool, // = false
pub padding: Box<dyn EdgeInsetsGeometry>,
pub item_extent: f32,
pub prototype_item: Box<dyn Widget>,
pub add_automatic_keep_alives: bool, // = true
pub add_repaint_boundaries: bool, // = true
pub add_semantic_indexes: bool, // = true
pub cache_extent: f32,
pub children: Vec<Box<dyn Widget>>,
pub semantic_child_count: i32,
pub drag_start_behavior: DragStartBehavior, // = DragStartBehavior.start,
// pub keyboard_dismiss_behavior: ScrollViewKeyboardDismissBehavior, // = ScrollViewKeyboardDismissBehavior.manual,
pub restoration_id: String,
pub clip_behavior: Clip, // = Clip.hardEdge
}
impl Default for ListView {
fn default() -> Self {
Self {
key: Default::default(),
// scroll_direction: Default::default(),
reverse: Default::default(),
// controller: Default::default(),
primary: Default::default(),
// physics: Default::default(),
shrink_wrap: Default::default(),
padding: box NoneEdgeInsetsGeometry,
item_extent: Default::default(),
prototype_item: box NoneWidget,
add_automatic_keep_alives: Default::default(),
add_repaint_boundaries: Default::default(),
add_semantic_indexes: Default::default(),
cache_extent: Default::default(),
children: Default::default(),
semantic_child_count: Default::default(),
drag_start_behavior: Default::default(),
// keyboard_dismiss_behavior: Default::default(),
restoration_id: Default::default(),
clip_behavior: Default::default(),
}
}
}
impl Widget for ListView {
fn create_element(&self) -> Box<dyn Element> {
box ListViewElement::new(self)
}
}
impl WidgetProperties for ListView {
fn key(&self) -> &Key {
&self.key
}
fn x(&self) -> f32 {
// self.x
0.0
}
fn y(&self) -> f32 {
// self.y
0.0
}
fn w(&self) -> f32 {
// self.w
0.0
}
fn h(&self) -> f32 {
// self.h
0.0
}
fn w_min(&self) -> f32 {
// self.w_min
0.0
}
fn h_min(&self) -> f32 {
// self.h_min
0.0
}
fn w_max(&self) -> f32 {
// self.w_max
0.0
}
fn h_max(&self) -> f32 {
// self.h_max
0.0
}
fn parent(&self) -> Option<Id> {
// self.parent
None
}
fn depth(&self) -> f32 {
// self.depth
0.0
}
fn visible(&self) -> bool {
// self.visible
true
}
fn mouse_input(&self) -> bool {
// self.mouse_input
true
}
fn key_input(&self) -> bool {
// self.key_input
true
}
fn renderable(&self) -> bool {
// self.renderable
true
}
fn internal_visible(&self) -> bool {
// self.internal_visible
true
}
}