/// <summary>
/// Used to dispose of resources in use by the <see cref="AdminViewModel{TViewModel, TModel, TModelSearcher}"/>
/// </summary>
/// <param name="disposing"></param>
protected override void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
ApplicationRestrictor.RequestUnlock(_adminToken);
FamilialLocker.RequestUnlock(_adminToken);
CriticalOperationType = CriticalOperationType.None;
if (ModelSearcher != null)
{
ModelSearcher.SelectedItems.CollectionChanged -= SelectedItems_CollectionChanged;
ModelSearcher.ExportId -= ModelSearcher_ExportId;
ModelSearcher.Cleared -= ModelSearcher_Cleared;
ModelSearcher.RequestEnable(_adminToken);
}
Model.ErrorsChanged -= Model_ErrorsChanged;
Model.Dispose();
_newEnableCallback = null;
_duplicateEnableCallback = null;
_modifyEnableCallback = null;
_backEnableCallback = null;
_forwardEnableCallback = null;
_performDeleteOnRecordEnableCallback = null;
_backForwardNavigator.CurrentItemChangedCallback = null;
_backForwardNavigator?.Dispose();
Navigation.Dispose();
RecordChangeLocker.Dispose();
ConfirmCancelLocker.Dispose();
NewRecordCancelLocker.Dispose();
NavigationalOverride.Dispose();
OutsideModificationLocker.Dispose();
DefaultModelCallback = null;
Locators.ForEach(locator => {
locator.SearchToBegin -= Locator_SearchToBegin;
locator.SearchComplete -= Locator_SearchComplete;
locator.RecordRequested -= Locator_RecordRequested;
locator.RequestEnable(_adminToken);
});
Locators.Clear();
}
_disposedValue = true;
}
base.Dispose(disposing);
}
/// <summary>
/// Logic used when the State changes.
/// </summary>
/// <param name="oldValue">The old State value.</param>
protected override void OnStateChanged(ViewModelState oldValue)
{
base.OnStateChanged(oldValue);
Navigation.State = State;
switch (State)
{
case ViewModelState.Idle:
CriticalOperationType = CriticalOperationType.None;
ModelSearcher?.RequestEnable(_adminToken);
break;
case ViewModelState.FamilialOperation:
case ViewModelState.Restricted:
ModelSearcher?.RequestEnable(_adminToken);
break;
case ViewModelState.NonCriticalOperation:
case ViewModelState.CriticalOperation:
ModelSearcher?.RequestDisable(_adminToken);
break;
}
}
/// <summary>
/// The logic used when a search has been completed.
/// </summary>
/// <param name="sender">The initiator of the event. Is used as token.</param>
/// <param name="e">The EventArgs of the event.</param>
private void Locator_SearchComplete(object sender, EventArgs e)
{
ModelSearcher?.RequestEnable(sender);
RecordChangeLocker?.RequestUnlock(sender);
}
