public WillPopScope(
Key key = null,
Widget child = null,
WillPopCallback onWillPop = null
) : base(key: key)
{
D.assert(child != null);
this.onWillPop = onWillPop;
this.child = child;
}
public Form(
Key key = null,
Widget child = null,
bool autovalidate = false,
WillPopCallback onWillPop = null,
VoidCallback onChanged = null
) : base(key: key)
{
D.assert(child != null);
this.child = child;
this.autovalidate = autovalidate;
this.onWillPop = onWillPop;
this.onChanged = onChanged;
}
public void removeScopedWillPopCallback(WillPopCallback callback)
{
D.assert(this._scopeKey.currentState != null,
"Tried to remove a willPop callback from a route that is not currently in the tree.");
this._willPopCallbacks.Remove(callback);
}
public void addScopedWillPopCallback(WillPopCallback callback)
{
D.assert(this._scopeKey.currentState != null,
"Tried to add a willPop callback to a route that is not currently in the tree.");
this._willPopCallbacks.Add(callback);
}
