void _handlePressed(bool isExpanded, int index)
{
if (this.widget.expansionCallback != null)
{
this.widget.expansionCallback(index, isExpanded);
}
if (this.widget._allowOnlyOnePanelOpen)
{
ExpansionPanelRadio pressedChild = (ExpansionPanelRadio)this.widget.children[index];
for (int childIndex = 0; childIndex < this.widget.children.Count; childIndex++)
{
ExpansionPanelRadio child = (ExpansionPanelRadio)this.widget.children[childIndex];
if (this.widget.expansionCallback != null && childIndex != index &&
child.value == this._currentOpenPanel?.value)
{
this.widget.expansionCallback(childIndex, false);
}
}
this._currentOpenPanel = isExpanded ? null : pressedChild;
}
this.setState(() => { });
}
bool _isChildExpanded(int index)
{
if (this.widget._allowOnlyOnePanelOpen)
{
ExpansionPanelRadio radioWidget = (ExpansionPanelRadio)this.widget.children[index];
return(this._currentOpenPanel?.value == radioWidget.value);
}
return(this.widget.children[index].isExpanded);
}
public override void initState()
{
base.initState();
if (this.widget._allowOnlyOnePanelOpen)
{
D.assert(this._allIdentifierUnique(), "All object identifiers are not unique!");
foreach (ExpansionPanelRadio child in this.widget.children)
{
if (this.widget.initialOpenPanelValue != null &&
child.value == this.widget.initialOpenPanelValue)
{
this._currentOpenPanel = child;
}
}
}
}
public override void initState()
{
base.initState();
if (widget._allowOnlyOnePanelOpen)
{
D.assert(_allIdentifierUnique(), () => "All ExpansionPanelRadio identifier values must be unique.");
foreach (ExpansionPanelRadio child in widget.children)
{
if (widget.initialOpenPanelValue != null)
{
_currentOpenPanel =
searchPanelByValue(widget.children.Cast <ExpansionPanelRadio>().ToList(),
widget.initialOpenPanelValue);
}
}
}
}
public override void didUpdateWidget(StatefulWidget oldWidget)
{
base.didUpdateWidget(oldWidget);
ExpansionPanelList _oldWidget = (ExpansionPanelList)oldWidget;
if (widget._allowOnlyOnePanelOpen)
{
D.assert(_allIdentifierUnique(), () => "All ExpansionPanelRadio identifier values must be unique.");
if (!_oldWidget._allowOnlyOnePanelOpen)
{
_currentOpenPanel =
searchPanelByValue(widget.children.Cast <ExpansionPanelRadio>().ToList(),
widget.initialOpenPanelValue);
}
}
else
{
_currentOpenPanel = null;
}
}
public override void didUpdateWidget(StatefulWidget oldWidget)
{
base.didUpdateWidget(oldWidget);
ExpansionPanelList _oldWidget = (ExpansionPanelList)oldWidget;
if (this.widget._allowOnlyOnePanelOpen)
{
D.assert(this._allIdentifierUnique(), "All object identifiers are not unique!");
foreach (ExpansionPanelRadio newChild in this.widget.children)
{
if (this.widget.initialOpenPanelValue != null &&
newChild.value == this.widget.initialOpenPanelValue)
{
this._currentOpenPanel = newChild;
}
}
}
else if (_oldWidget._allowOnlyOnePanelOpen)
{
this._currentOpenPanel = null;
}
}