private static void queueForWork(AsyncTreeViewModel unit)
{
lock (_worker)
{
if (!workUnits.Contains(unit))
{
workUnits.Enqueue(unit);
}
}
_treesHaveWork.Set();
}
void SearchFinished(AsyncOperationInstance <IList <ISerializableObject> > operation, IList <ISerializableObject> result)
{
List <IISOViewModel> selectionList = buildQueryResult(result);
DispatcherHelper.CheckBeginInvokeOnUI(
() =>
{
_queryResult = selectionList;
QueryResultTree = new AsyncTreeViewModel(ISOStore);
RaiseQueryResultChanged();
CurrentOperation = null;
});
}
public SelectionViewModel()
: base("Selection_Next", "Selection_Previous", "Selection_Title", "")
{
PreviousPage = Messages.Page.FieldData;
NextPage = Messages.Page.Actions;
CanNavigateNext = false;
CanNavigateBack = false;
MessengerInstance.Register <Selection>(this, (msg) =>
{
CanNavigateNext = false;
CanNavigateBack = false;
BuildingSelection = false;
BuildStatus = "Selection_WaitingForTree";
SelectionTree = new AsyncTreeViewModel(ISOStore);
SelectionTree.TruncateDataItems = msg.TruncateDataItems;
foreach (var vm in msg.Content)
{
SelectionTree.addGenerator(vm);
}
SelectionTree.SelectionBuildProgressChanged += new SelectionBuildProgressChangedHandler(SelectionTree_SelectionBuildProgressChanged);
new Action(() =>
{
_completeSelection = SelectionTree.buildSelection();
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
SelectionTree.SelectionBuildProgressChanged -= SelectionTree_SelectionBuildProgressChanged;
CanNavigateBack = true;
CanNavigateNext = true;
BuildingSelection = false;
BuildStatus = "Selection_Done";
});
}).BeginInvoke(null, null);
});
}
/// <summary>
/// Initializes a new instance of the SelectFieldDataViewModel class.
/// </summary>
public SelectFieldDataViewModel()
: base("SelectFD_Next", "SelectFD_Previous", "SelectFD_Title", "SelectFD_Description")
{
NextPage = Messages.Page.FinalSelection;
PreviousPage = Messages.Page.Actions;
CanNavigateBack = true;
CanNavigateNext = true;
QueryDatabase = new RelayCommand(executeSearch,
() => ConfiguredSearch != null);
AddToSelection = new RelayCommand <IList>((selection) =>
{
if (SelectionTree == null)
{
SelectionTree = new AsyncTreeViewModel(ISOStore);
}
if (_queryResult != null && selection != null)
{
var typedSelection = Enumerable.Cast <IISOViewModel>(selection);
foreach (var generator in typedSelection)
{
if (!_selection.Contains(generator))
{
_selection.Add(generator);
}
}
if (typedSelection.Count() > 0)
{
RaiseSelectionChanged();
}
}
});
RemoveFromSelection = new RelayCommand <IList>((selection) =>
{
if (_queryResult != null && selection != null)
{
var typedSelection = Enumerable.Cast <IISOViewModel>(selection);
foreach (var generator in typedSelection)
{
_selection.Remove(generator);
}
if (selection.Count > 0)
{
RaiseSelectionChanged();
}
}
});
MessengerInstance.Register <ConnectionStateChanged>(this, (msg) =>
{
//Repository Disconnected
if ((msg.Content & ConnectionState.ConnectedToRepository) != ConnectionState.ConnectedToRepository)
{
clearSelection();
}
});
MessengerInstance.Register <Settings>(this, (msg) => updateFromSettings(msg.Content));
MessengerInstance.Send <SettingsRequest>(new SettingsRequest());
}