public PDFTextSentenceLayer(PDFRendererControlStats pdf_renderer_control_stats, int page)
{
this.pdf_renderer_control_stats = pdf_renderer_control_stats;
this.page = page;
InitializeComponent();
Focusable = true;
KeyboardNavigation.SetDirectionalNavigation(this, KeyboardNavigationMode.Once);
Background = Brushes.Transparent;
Cursor = Cursors.IBeam;
SizeChanged += PDFTextSentenceLayer_SizeChanged;
drag_area_tracker = new DragAreaTracker(this, false);
drag_area_tracker.OnDragStarted += drag_area_tracker_OnDragStarted;
drag_area_tracker.OnDragInProgress += drag_area_tracker_OnDragInProgress;
drag_area_tracker.OnDragComplete += drag_area_tracker_OnDragComplete;
text_selection_manager = new TextSelectionManager();
PreviewMouseDown += PDFTextSentenceLayer_PreviewMouseDown;
PreviewKeyDown += PDFTextLayer_PreviewKeyDown;
RequestBringIntoView += PDFTextSentenceLayer_RequestBringIntoView;
text_layer_selection_mode = TextLayerSelectionMode.Sentence;
}
public PDFTextSentenceLayer(PDFRendererControl pdf_renderer_control, int page)
{
WPFDoEvents.AssertThisCodeIsRunningInTheUIThread();
this.pdf_renderer_control = new WeakReference <PDFRendererControl>(pdf_renderer_control);
this.page = page;
InitializeComponent();
Focusable = true;
KeyboardNavigation.SetDirectionalNavigation(this, KeyboardNavigationMode.Once);
Background = Brushes.Transparent;
Cursor = Cursors.IBeam;
SizeChanged += PDFTextSentenceLayer_SizeChanged;
drag_area_tracker = new DragAreaTracker(this, false);
drag_area_tracker.OnDragStarted += drag_area_tracker_OnDragStarted;
drag_area_tracker.OnDragInProgress += drag_area_tracker_OnDragInProgress;
drag_area_tracker.OnDragComplete += drag_area_tracker_OnDragComplete;
text_selection_manager = new TextSelectionManager();
PreviewMouseDown += PDFTextSentenceLayer_PreviewMouseDown;
PreviewKeyDown += PDFTextLayer_PreviewKeyDown;
RequestBringIntoView += PDFTextSentenceLayer_RequestBringIntoView;
text_layer_selection_mode = TextLayerSelectionMode.Sentence;
//Unloaded += PDFTextSentenceLayer_Unloaded;
Dispatcher.ShutdownStarted += Dispatcher_ShutdownStarted;
}
protected virtual void Dispose(bool disposing)
{
Logging.Debug("PDFTextSentenceLayer::Dispose({0}) @{1}", disposing, dispose_count);
try
{
if (null != drag_area_tracker)
{
WPFDoEvents.InvokeInUIThread(() =>
{
try
{
foreach (var el in Children)
{
IDisposable node = el as IDisposable;
if (null != node)
{
node.Dispose();
}
}
}
catch (Exception ex)
{
Logging.Error(ex);
}
try
{
ClearChildren();
Children.Clear();
}
catch (Exception ex)
{
Logging.Error(ex);
}
drag_area_tracker.OnDragStarted -= drag_area_tracker_OnDragStarted;
drag_area_tracker.OnDragInProgress -= drag_area_tracker_OnDragInProgress;
drag_area_tracker.OnDragComplete -= drag_area_tracker_OnDragComplete;
}, Dispatcher);
}
// Clear the references for sanity's sake
pdf_renderer_control_stats = null;
drag_area_tracker = null;
text_selection_manager = null;
DataContext = null;
}
catch (Exception ex)
{
Logging.Error(ex);
}
++dispose_count;
//base.Dispose(disposing); // parent only throws an exception (intentionally), so depart from best practices and don't call base.Dispose(bool)
}
protected virtual void Dispose(bool disposing)
{
Logging.Debug("PDFTextSentenceLayer::Dispose({0}) @{1}", disposing, dispose_count);
WPFDoEvents.InvokeInUIThread(() =>
{
WPFDoEvents.SafeExec(() =>
{
if (dispose_count == 0)
{
foreach (var el in Children)
{
IDisposable node = el as IDisposable;
if (null != node)
{
node.Dispose();
}
}
}
});
WPFDoEvents.SafeExec(() =>
{
ClearChildren();
Children.Clear();
});
WPFDoEvents.SafeExec(() =>
{
if (drag_area_tracker != null)
{
drag_area_tracker.OnDragStarted -= drag_area_tracker_OnDragStarted;
drag_area_tracker.OnDragInProgress -= drag_area_tracker_OnDragInProgress;
drag_area_tracker.OnDragComplete -= drag_area_tracker_OnDragComplete;
}
Dispatcher.ShutdownStarted -= Dispatcher_ShutdownStarted;
});
WPFDoEvents.SafeExec(() =>
{
// Clear the references for sanity's sake
pdf_renderer_control = null;
drag_area_tracker = null;
text_selection_manager = null;
});
WPFDoEvents.SafeExec(() =>
{
DataContext = null;
});
++dispose_count;
//base.Dispose(disposing); // parent only throws an exception (intentionally), so depart from best practices and don't call base.Dispose(bool)
});
}
