public override Widget build(BuildContext context)
{
List <Widget> chips = this._materials.Select <string, Widget>((string name) => {
return(new Chip(
key: Key.key(name),
backgroundColor: this._nameToColor(name),
label: new Text(this._capitalize(name)),
onDeleted: () => { this.setState(() => { this._removeMaterial(name); }); }
));
}).ToList();
List <Widget> inputChips = this._tools.Select <string, Widget>((string name) => {
return(new InputChip(
key: ValueKey <string> .key(name),
avatar: new CircleAvatar(
backgroundImage: this._nameToAvatar(name)
),
label: new Text(this._capitalize(name)),
onDeleted: () => { this.setState(() => { this._removeTool(name); }); }));
}).ToList();
List <Widget> choiceChips = this._materials.Select <string, Widget>((string name) => {
return(new ChoiceChip(
key: ValueKey <string> .key(name),
backgroundColor: this._nameToColor(name),
label: new Text(this._capitalize(name)),
selected: this._selectedMaterial == name,
onSelected: (bool value) => {
this.setState(() => { this._selectedMaterial = value ? name : ""; });
}
));
}).ToList();
List <Widget> filterChips = ChipDemoUtils._defaultTools.Select <string, Widget>((string name) => {
return(new FilterChip(
key: ValueKey <string> .key(name),
label: new Text(this._capitalize(name)),
selected: this._tools.Contains(name) ? this._selectedTools.Contains(name) : false,
onSelected: !this._tools.Contains(name)
? (ValueChanged <bool>)null
: (bool value) => {
this.setState(() => {
if (!value)
{
this._selectedTools.Remove(name);
}
else
{
this._selectedTools.Add(name);
}
});
}
));
}).ToList();
HashSet <string> allowedActions = new HashSet <string>(new List <string> {
});
if (this._selectedMaterial != null && this._selectedMaterial.isNotEmpty())
{
foreach (string tool in this._selectedTools)
{
allowedActions.UnionWith(ChipDemoUtils._toolActions[tool]);
}
allowedActions =
new HashSet <string>(
allowedActions.Intersect(ChipDemoUtils._materialActions[this._selectedMaterial]));
}
List <Widget> actionChips = allowedActions.Select <string, Widget>((string name) => {
return(new ActionChip(
label: new Text(this._capitalize(name)),
onPressed: () => { this.setState(() => { this._selectedAction = name; }); }
));
}).ToList();
ThemeData theme = Theme.of(context);
List <Widget> tiles = new List <Widget> {
new SizedBox(height: 8.0f, width: 0.0f),
new _ChipsTile(label: "Available Materials (Chip)", children: chips),
new _ChipsTile(label: "Available Tools (InputChip)", children: inputChips),
new _ChipsTile(label: "Choose a Material (ChoiceChip)", children: choiceChips),
new _ChipsTile(label: "Choose Tools (FilterChip)", children: filterChips),
new _ChipsTile(label: "Perform Allowed Action (ActionChip)", children: actionChips),
new Divider(),
new Padding(
padding: EdgeInsets.all(8.0f),
child: new Center(
child: new Text(this._createResult(),
style: theme.textTheme.title
)
)
)
};
return(new Scaffold(
appBar: new AppBar(
title: new Text("Chips"),
actions: new List <Widget> {
new MaterialDemoDocumentationButton(ChipDemo.routeName),
new IconButton(
onPressed: () => {
this.setState(() => { this._showShapeBorder = !this._showShapeBorder; });
},
icon: new Icon(Icons.vignette)
)
}
),
body: new ChipTheme(
data: this._showShapeBorder
? theme.chipTheme.copyWith(
shape: new BeveledRectangleBorder(
side: new BorderSide(width: 0.66f, style: BorderStyle.solid, color: Colors.grey),
borderRadius: BorderRadius.circular(10.0f)
))
: theme.chipTheme,
child: new ListView(children: tiles)
),
floatingActionButton: new FloatingActionButton(
onPressed: () => this.setState(this._reset),
child: new Icon(Icons.refresh)
)
));
}