internal void GrabFocusForView(DocumentView view)
{
if (linkedController != null)
{
linkedController?.GrabFocusForView(view);
}
else
{
OnGrabFocus(view);
}
}
/// <summary>
/// Gets the view that will show the content of the document.
/// </summary>
/// <returns>The view</returns>
public async Task <DocumentView> GetDocumentView()
{
CheckInitialized();
if (finalViewItem == null)
{
try {
finalViewItem = await itemExtension.OnInitializeView();
} catch (Exception ex) {
LoggingService.LogError("View container initialization failed", ex);
finalViewItem = new DocumentViewContent(() => (Control)null);
}
NotifyContentChanged();
}
return(finalViewItem);
}
async Task <DocumentView> InternalInitializeView()
{
if (viewItem == null)
{
try {
viewItem = await OnInitializeView();
} catch (Exception ex) {
LoggingService.LogError("View container initialization failed", ex);
viewItem = new DocumentViewContent(() => (Control)null);
}
// If the view already has a controller bound to it, link it to the new one, so that all
// events from the view are propagated to the old controller besides the new one.
if (viewItem.SourceController != null)
{
linkedController = viewItem.SourceController;
linkedController.linkedControllerParent = this;
}
viewItem.SourceController = this;
}
return(viewItem);
}
public DocumentView()
{
AttachedViews.AttachListener(this);
activeAttachedView = this;
}
/// <summary>
/// Called when the view of this controller needs to grab the focus (usually because it has
/// become the active document).
/// </summary>
/// <param name="view">View.</param>
protected virtual void OnGrabFocus(DocumentView view)
{
// Use the default GrabFocus implementation in DocumentView.
view.DefaultGrabFocus();
}