/// <summary>
/// Copy worker.
/// </summary>
internal static void Copy(TextEditor This, bool userInitiated)
{
TextEditorTyping._FlushPendingInputItems(This);
TextEditorTyping._BreakTypingSequence(This);
if (This.Selection != null && !This.Selection.IsEmpty)
{
// Note: _CreateDataObject raises a public event which might throw a recoverable exception.
DataObject dataObject = TextEditorCopyPaste._CreateDataObject(This, /*isDragDrop:*/ false);
if (dataObject != null)
{
try
{
// The copy command was not terminated by application
// One of reason should be the opening fail of Clipboard by the destroyed hwnd.
Clipboard.CriticalSetDataObject(dataObject, true);
}
catch (ExternalException)
when(!FrameworkCompatibilityPreferences.ShouldThrowOnCopyOrCutFailure)
{
// Clipboard is failed to set the data object.
return;
}
}
}
// Do not clear springload formatting
}
internal bool SourceOnMouseMove(Point mouseMovePoint)
{
// Not allow the initiating DragDrop operation without the unmanaged code permission.
// We chose to use this over clipboard because this was causing issues in LocalIntranet
// which has similar restrictions as internet but has clipboard permission
if (!_dragStarted || !SecurityHelper.CheckUnmanagedCodePermission())
{
return(false); // false means that drag is not involved at all - selection extension should continue
}
// Check the mouse drag to start DragDrop operation.
if (!InitialThresholdCrossed(mouseMovePoint))
{
return(true); // true means that drag is in progress, even though not yet started - so selection should not extend
}
ITextSelection selection = _textEditor.Selection;
// NOTE: This calls OnMouseMove recursively;
// but because UiScope.IsMouseCaptured is false already,
// we'll return with no actions
// This is the first move in drag-drop gesture.
// Execure the whole drag-drop ssequence: returns after the drop
_dragStarted = false;
// Execute OLE drag-drop process (synchronousely)
// ----------------------------------------------
// Set the original text range to delete it with DragDropEffects.Move effect.
_dragSourceTextRange = new TextRange(selection.Start, selection.End);
// Prepare data object (including side effects from application customization)
// Note: _CreateDataObject raises a public event which might throw a recoverable exception.
IDataObject dataObject = TextEditorCopyPaste._CreateDataObject(_textEditor, /*isDragDrop:*/ true);
if (dataObject != null) // null would mean that application cancelled the command
{
//
SourceDoDragDrop(selection, dataObject);
// Release mouse capture, because DoDragDrop is taking
// a mouse resposibility from now on.
// ReleaseMouseCapture shouldn't call before calling DoDragDroop
// that cause the generating WM_MOUSELEAVE message by system
// (xxxCapture xxxCancelMouseMoverTracking) that appear MouseLeave
// event during DragDrop event.
_textEditor.UiScope.ReleaseMouseCapture();
return(true); // true means that drag is in progress. Selection should not extend.
}
else
{
// The DragDrop process has been terminated by application custom code
//
return(false);
}
}
/// <summary>
/// Cut worker.
/// </summary>
internal static void Cut(TextEditor This, bool userInitiated)
{
if (userInitiated)
{
// Fail silently if the app explicitly denies clipboard access.
try
{
new UIPermission(UIPermissionClipboard.OwnClipboard).Demand();
}
catch (SecurityException)
{
return;
}
}
TextEditorTyping._FlushPendingInputItems(This);
TextEditorTyping._BreakTypingSequence(This);
if (This.Selection != null && !This.Selection.IsEmpty)
{
// Copy content onto the clipboard
// Note: _CreateDataObject raises a public event which might throw a recoverable exception.
DataObject dataObject = TextEditorCopyPaste._CreateDataObject(This, /*isDragDrop:*/ false);
if (dataObject != null)
{
try
{
// The copy command was not terminated by application
// One of reason should be the opening fail of Clipboard by the destroyed hwnd.
Clipboard.CriticalSetDataObject(dataObject, true);
}
catch (ExternalException)
when(!FrameworkCompatibilityPreferences.ShouldThrowOnCopyOrCutFailure)
{
// Clipboard is failed to set the data object.
return;
}
// Delete selected content
using (This.Selection.DeclareChangeBlock())
{
// Forget previously suggested horizontal position
TextEditorSelection._ClearSuggestedX(This);
This.Selection.Text = String.Empty;
// Clear springload formatting
if (This.Selection is TextSelection)
{
((TextSelection)This.Selection).ClearSpringloadFormatting();
}
}
}
}
}
/// <summary>
/// Copy worker.
/// </summary>
internal static void Copy(TextEditor This, bool userInitiated)
{
if (userInitiated)
{
// Fail silently if the app explicitly denies clipboard access.
try
{
new UIPermission(UIPermissionClipboard.OwnClipboard).Demand();
}
catch (SecurityException)
{
return;
}
}
else if (!SecurityHelper.CallerHasAllClipboardPermission())
{
// Fail silently if we don't have clipboard permission.
return;
}
TextEditorTyping._FlushPendingInputItems(This);
TextEditorTyping._BreakTypingSequence(This);
if (This.Selection != null && !This.Selection.IsEmpty)
{
// Note: _CreateDataObject raises a public event which might throw a recoverable exception.
DataObject dataObject = TextEditorCopyPaste._CreateDataObject(This, /*isDragDrop:*/ false);
if (dataObject != null)
{
try
{
// The copy command was not terminated by application
// One of reason should be the opening fail of Clipboard by the destroyed hwnd.
Clipboard.CriticalSetDataObject(dataObject, true);
}
catch (ExternalException)
when(!FrameworkCompatibilityPreferences.ShouldThrowOnCopyOrCutFailure)
{
// Clipboard is failed to set the data object.
return;
}
}
}
// Do not clear springload formatting
}
internal static void Cut(TextEditor This, bool userInitiated)
{
if (userInitiated)
{
try
{
new UIPermission(UIPermissionClipboard.OwnClipboard).Demand();
goto IL_1E;
}
catch (SecurityException)
{
return;
}
}
if (!SecurityHelper.CallerHasAllClipboardPermission())
{
return;
}
IL_1E:
TextEditorTyping._FlushPendingInputItems(This);
TextEditorTyping._BreakTypingSequence(This);
if (This.Selection != null && !This.Selection.IsEmpty)
{
DataObject dataObject = TextEditorCopyPaste._CreateDataObject(This, false);
if (dataObject != null)
{
try
{
Clipboard.CriticalSetDataObject(dataObject, true);
}
catch (ExternalException obj) when(!FrameworkCompatibilityPreferences.ShouldThrowOnCopyOrCutFailure)
{
return;
}
using (This.Selection.DeclareChangeBlock())
{
TextEditorSelection._ClearSuggestedX(This);
This.Selection.Text = string.Empty;
if (This.Selection is TextSelection)
{
((TextSelection)This.Selection).ClearSpringloadFormatting();
}
}
}
}
}
internal bool SourceOnMouseMove(Point mouseMovePoint)
{
if (!this._dragStarted || !SecurityHelper.CheckUnmanagedCodePermission())
{
return(false);
}
if (!this.InitialThresholdCrossed(mouseMovePoint))
{
return(true);
}
ITextSelection selection = this._textEditor.Selection;
this._dragStarted = false;
this._dragSourceTextRange = new TextRange(selection.Start, selection.End);
IDataObject dataObject = TextEditorCopyPaste._CreateDataObject(this._textEditor, true);
if (dataObject != null)
{
this.SourceDoDragDrop(selection, dataObject);
this._textEditor.UiScope.ReleaseMouseCapture();
return(true);
}
return(false);
}
internal static void Copy(TextEditor This, bool userInitiated)
{
if (userInitiated)
{
try
{
new UIPermission(UIPermissionClipboard.OwnClipboard).Demand();
goto IL_1B;
}
catch (SecurityException)
{
return;
}
}
if (!SecurityHelper.CallerHasAllClipboardPermission())
{
return;
}
IL_1B:
TextEditorTyping._FlushPendingInputItems(This);
TextEditorTyping._BreakTypingSequence(This);
if (This.Selection != null && !This.Selection.IsEmpty)
{
DataObject dataObject = TextEditorCopyPaste._CreateDataObject(This, false);
if (dataObject != null)
{
try
{
Clipboard.CriticalSetDataObject(dataObject, true);
}
catch (ExternalException obj) when(!FrameworkCompatibilityPreferences.ShouldThrowOnCopyOrCutFailure)
{
}
}
}
}
