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87 行
3.2 KiB
87 行
3.2 KiB
using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.gestures;
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using Unity.UIWidgets.ui;
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using Unity.UIWidgets.widgets;
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namespace Unity.UIWidgets.material {
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public class CheckboxListTile : StatelessWidget {
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public CheckboxListTile(
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Key key = null,
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bool? value = null,
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ValueChanged<bool?> onChanged = null,
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Color activeColor = null,
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Color checkColor = null,
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Widget title = null,
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Widget subtitle = null,
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bool isThreeLine = false,
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bool? dense = null,
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Widget secondary = null,
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bool selected = false,
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ListTileControlAffinity controlAffinity = ListTileControlAffinity.platform
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) : base(key: key) {
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D.assert(value != null);
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D.assert(!isThreeLine || subtitle != null);
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this.checkColor = checkColor;
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this.title = title;
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this.subtitle = subtitle;
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this.isThreeLine = isThreeLine;
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this.dense = dense;
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this.secondary = secondary;
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this.selected = selected;
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this.controlAffinity = controlAffinity;
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this.value = value;
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this.activeColor = activeColor;
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this.onChanged = onChanged;
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}
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public readonly bool? value;
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public readonly ValueChanged<bool?> onChanged;
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public readonly Color activeColor;
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public readonly Color checkColor;
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public readonly Widget title;
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public readonly Widget subtitle;
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public readonly Widget secondary;
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public readonly bool isThreeLine;
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public readonly bool? dense;
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public readonly bool selected;
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public readonly ListTileControlAffinity controlAffinity;
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public override Widget build(BuildContext context) {
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Widget control = new Checkbox(
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value: value,
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onChanged: onChanged,
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activeColor: activeColor,
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checkColor: checkColor,
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materialTapTargetSize: MaterialTapTargetSize.shrinkWrap
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);
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Widget leading = null;
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Widget trailing = null;
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switch (controlAffinity) {
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case ListTileControlAffinity.leading:
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leading = control;
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trailing = secondary;
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break;
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case ListTileControlAffinity.trailing:
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case ListTileControlAffinity.platform:
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leading = secondary;
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trailing = control;
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break;
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}
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return ListTileTheme.merge(
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selectedColor: activeColor ?? Theme.of(context).accentColor,
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child: new ListTile(
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leading: leading,
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title: title,
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subtitle: subtitle,
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trailing: trailing,
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isThreeLine: isThreeLine,
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dense: dense,
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enabled: onChanged != null,
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onTap: onChanged != null ? () => { onChanged(!value); } : (GestureTapCallback) null,
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selected: selected
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)
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);
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}
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}
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}
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