/// <summary>
/// This WorkspaceView will be supporting multiple WorkspaceViewModel
/// E.g. Home Workspace, Custom Workspaces
///
/// Handler for the DataContextChangedEvent. Handles registration of event listeners.
/// Called during switching of workspace.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void dynWorkspaceView_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
// Remove before adding registration of event listener to prevent multiple registration
// to the same WorkspaceViewModel
// Remove registration of event listener
if (e.OldValue != null)
{
WorkspaceViewModel oldViewModel = (WorkspaceViewModel)e.OldValue;
oldViewModel.CurrentOffsetChanged -= new PointEventHandler(vm_CurrentOffsetChanged);
oldViewModel.ZoomChanged -= new ZoomEventHandler(vm_ZoomChanged);
oldViewModel.RequestZoomToViewportCenter -= new ZoomEventHandler(vm_ZoomAtViewportCenter);
oldViewModel.RequestZoomToViewportPoint -= new ZoomEventHandler(vm_ZoomAtViewportPoint);
oldViewModel.RequestZoomToFitView -= new ZoomEventHandler(vm_ZoomToFitView);
oldViewModel.RequestCenterViewOnElement -= new NodeEventHandler(CenterViewOnElement);
oldViewModel.RequestNodeCentered -= new NodeEventHandler(vm_RequestNodeCentered);
oldViewModel.RequestAddViewToOuterCanvas -= new ViewEventHandler(vm_RequestAddViewToOuterCanvas);
oldViewModel.WorkspacePropertyEditRequested -= VmOnWorkspacePropertyEditRequested;
oldViewModel.RequestSelectionBoxUpdate -= VmOnRequestSelectionBoxUpdate;
}
// Adding registration of event listener
ViewModel.CurrentOffsetChanged += new PointEventHandler(vm_CurrentOffsetChanged);
ViewModel.ZoomChanged += new ZoomEventHandler(vm_ZoomChanged);
ViewModel.RequestZoomToViewportCenter += new ZoomEventHandler(vm_ZoomAtViewportCenter);
ViewModel.RequestZoomToViewportPoint += new ZoomEventHandler(vm_ZoomAtViewportPoint);
ViewModel.RequestZoomToFitView += new ZoomEventHandler(vm_ZoomToFitView);
ViewModel.RequestCenterViewOnElement += new NodeEventHandler(CenterViewOnElement);
ViewModel.RequestNodeCentered += new NodeEventHandler(vm_RequestNodeCentered);
ViewModel.RequestAddViewToOuterCanvas += new ViewEventHandler(vm_RequestAddViewToOuterCanvas);
ViewModel.WorkspacePropertyEditRequested += VmOnWorkspacePropertyEditRequested;
ViewModel.RequestSelectionBoxUpdate += VmOnRequestSelectionBoxUpdate;
ViewModel.Loaded();
outerCanvas.Children.Remove(zoomAndPanControl);
zoomAndPanControl = new ZoomAndPanControl(DataContext as WorkspaceViewModel);
Canvas.SetRight(zoomAndPanControl, 10);
Canvas.SetTop(zoomAndPanControl, 10);
Canvas.SetZIndex(zoomAndPanControl, 8000);
zoomAndPanControl.Focusable = false;
outerCanvas.Children.Add(zoomAndPanControl);
}
/// <summary>
/// Handler for the DataContextChangedEvent. Hanndles registration of event listeners.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void dynWorkspaceView_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
ViewModel.CurrentOffsetChanged += new PointEventHandler(vm_CurrentOffsetChanged);
ViewModel.ZoomChanged += new ZoomEventHandler(vm_ZoomChanged);
ViewModel.RequestZoomToViewportCenter += new ZoomEventHandler(vm_ZoomAtViewportCenter);
ViewModel.RequestZoomToViewportPoint += new ZoomEventHandler(vm_ZoomAtViewportPoint);
ViewModel.RequestZoomToFitView += new ZoomEventHandler(vm_ZoomToFitView);
ViewModel.RequestCenterViewOnElement += new NodeEventHandler(CenterViewOnElement);
ViewModel.RequestNodeCentered += new NodeEventHandler(vm_RequestNodeCentered);
ViewModel.RequestAddViewToOuterCanvas += new ViewEventHandler(vm_RequestAddViewToOuterCanvas);
ViewModel.WorkspacePropertyEditRequested -= VmOnWorkspacePropertyEditRequested;
ViewModel.WorkspacePropertyEditRequested += VmOnWorkspacePropertyEditRequested;
ViewModel.RequestSelectionBoxUpdate += VmOnRequestSelectionBoxUpdate;
ViewModel.Loaded();
outerCanvas.Children.Remove(zoomAndPanControl);
zoomAndPanControl = new ZoomAndPanControl(DataContext as WorkspaceViewModel);
Canvas.SetRight(zoomAndPanControl, 10);
Canvas.SetTop(zoomAndPanControl, 10);
Canvas.SetZIndex(zoomAndPanControl, 8000);
zoomAndPanControl.Focusable = false;
outerCanvas.Children.Add(zoomAndPanControl);
}
void dynWorkspaceView_Loaded(object sender, RoutedEventArgs e)
{
zoomAndPanControl = new ZoomAndPanControl(DataContext as WorkspaceViewModel);
Canvas.SetRight(zoomAndPanControl, 10);
Canvas.SetTop(zoomAndPanControl, 10);
Canvas.SetZIndex(zoomAndPanControl, 8000);
zoomAndPanControl.Focusable = false;
outerCanvas.Children.Add(zoomAndPanControl);
/*
// Add EndlessGrid
endlessGrid = new EndlessGrid(outerCanvas);
selectionCanvas.Children.Add(endlessGrid);
zoomBorder.EndlessGrid = endlessGrid; // Register with ZoomBorder
// Binding for grid lines HitTest and Visibility
var binding = new Binding()
{
Path = new PropertyPath("DataContext.FullscreenWatchShowing"),
Converter = new InverseBoolToVisibilityConverter(),
Mode = BindingMode.OneWay,
};
binding.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor, typeof(TabControl), 1);
endlessGrid.SetBinding(UIElement.VisibilityProperty, binding);*/
//============
//LoadCursorState();
//============
Debug.WriteLine("Workspace loaded.");
DynamoSelection.Instance.Selection.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(Selection_CollectionChanged);
ViewModel.DragSelectionStarted += ViewModel_DragSelectionStarted;
ViewModel.DragSelectionEnded += ViewModel_DragSelectionEnded;
}
