void _handleTap()
{
RenderBox itemBox = (RenderBox)this.context.findRenderObject();
Rect itemRect = itemBox.localToGlobal(Offset.zero) & itemBox.size;
EdgeInsets menuMargin = ButtonTheme.of(this.context).alignedDropdown
? DropdownConstants._kAlignedMenuMargin
: DropdownConstants._kUnalignedMenuMargin;
D.assert(this._dropdownRoute == null);
this._dropdownRoute = new _DropdownRoute <T>(
items: this.widget.items,
buttonRect: menuMargin.inflateRect(itemRect),
padding: DropdownConstants._kMenuItemPadding,
selectedIndex: this._selectedIndex ?? 0,
elevation: this.widget.elevation,
theme: Theme.of(this.context, shadowThemeOnly: true),
style: this._textStyle,
barrierLabel: MaterialLocalizations.of(this.context).modalBarrierDismissLabel
);
Navigator.push(this.context, this._dropdownRoute).Then(newValue => {
_DropdownRouteResult <T> value = newValue as _DropdownRouteResult <T>;
this._dropdownRoute = null;
if (!this.mounted || newValue == null)
{
return;
}
if (this.widget.onChanged != null)
{
this.widget.onChanged(value.result);
}
});
}
void _handleTap()
{
RenderBox itemBox = (RenderBox)context.findRenderObject();
Rect itemRect = itemBox.localToGlobal(Offset.zero) & itemBox.size;
TextDirection textDirection = Directionality.of(context);
EdgeInsetsGeometry menuMargin = ButtonTheme.of(context).alignedDropdown
? material_._kAlignedMenuMargin
: material_._kUnalignedMenuMargin;
List <_MenuItem <T> > menuItems = new List <_MenuItem <T> >(new _MenuItem <T> [widget.items.Count]);
for (int index = 0; index < widget.items.Count; index += 1)
{
var pindex = index;
menuItems[pindex] = new _MenuItem <T>(
item: widget.items[pindex],
onLayout: (Size size) => {
if (_dropdownRoute == null)
{
return;
}
_dropdownRoute.itemHeights[pindex] = size.height;
}
);
}
D.assert(_dropdownRoute == null);
_dropdownRoute = new _DropdownRoute <T>(
items: menuItems,
buttonRect: menuMargin.resolve(textDirection).inflateRect(itemRect),
padding: material_._kMenuItemPadding.resolve(textDirection),
selectedIndex: _selectedIndex ?? 0,
elevation: widget.elevation,
theme: Theme.of(context, shadowThemeOnly: true),
style: _textStyle,
barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
itemHeight: widget.itemHeight,
dropdownColor: widget.dropdownColor
);
Navigator.push <T>(context, _dropdownRoute).then(newValue => {
_DropdownRouteResult <T> value = newValue as _DropdownRouteResult <T>;
_removeDropdownRoute();
if (!mounted || newValue == null)
{
return;
}
if (widget.onChanged != null)
{
widget.onChanged(value.result);
}
});
if (widget.onTap != null)
{
widget.onTap();
}
}
public bool Equals(_DropdownRouteResult <T> other)
{
return(result.Equals(other.result));
}
public bool Equals(_DropdownRouteResult <T> other)
{
return(this.result == other.result);
}