internal void UnloadPlugin()
{
// the focused element will not processed by GC: https://stackoverflow.com/questions/30848939/memory-leak-due-to-window-efectivevalues-retention
FocusManager.SetFocusedElement(this, null);
Keyboard.DefaultRestoreFocusMode =
RestoreFocusMode.None; // WPF will put the focused item into a "_restoreFocus" list ... omg
Keyboard.ClearFocus();
_canOldPluginResize = ContextObject.CanResize;
ContextObject.Reset();
try
{
Plugin?.Cleanup();
}
catch (Exception e)
{
Debug.WriteLine(e);
}
Plugin = null;
_path = string.Empty;
}
internal void BeginShow(IViewer matchedPlugin, string path,
Action <string, ExceptionDispatchInfo> exceptionHandler)
{
_path = path;
Plugin = matchedPlugin;
ContextObject.Reset();
// assign monitor color profile
ContextObject.ColorProfileName = DisplayDeviceHelper.GetMonitorColorProfileFromWindow(this);
// get window size before showing it
try
{
Plugin.Prepare(path, ContextObject);
}
catch (Exception e)
{
exceptionHandler(path, ExceptionDispatchInfo.Capture(e));
return;
}
SetOpenWithButtonAndPath();
// revert UI changes
ContextObject.IsBusy = true;
var newHeight = ContextObject.PreferredSize.Height + BorderThickness.Top + BorderThickness.Bottom +
(ContextObject.TitlebarOverlap ? 0 : windowCaptionContainer.Height);
var newWidth = ContextObject.PreferredSize.Width + BorderThickness.Left + BorderThickness.Right;
var newSize = new Size(newWidth, newHeight);
// if use has adjusted the window size, keep it
if (_customWindowSize != Size.Empty)
{
newSize = _customWindowSize;
}
else
{
_ignoreNextWindowSizeChange = true;
}
PositionWindow(newSize);
if (Visibility != Visibility.Visible)
{
Dispatcher.BeginInvoke(new Action(() => this.BringToFront(Topmost)), DispatcherPriority.Render);
Show();
}
//ShowWindowCaptionContainer(null, null);
//WindowHelper.SetActivate(new WindowInteropHelper(this), ContextObject.CanFocus);
// load plugin, do not block UI
Dispatcher.BeginInvoke(new Action(() =>
{
try
{
Plugin.View(path, ContextObject);
}
catch (Exception e)
{
exceptionHandler(path, ExceptionDispatchInfo.Capture(e));
}
}),
DispatcherPriority.Input);
}
