VisualSelectionRangeSnapShot RemoveSelectedText()
{
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder.WriteInfo("TxLMan::RemoveSelectedText");
_dbugActivityRecorder.BeginContext();
}
#endif
if (selectionRange == null)
{
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder.WriteInfo("NO_SEL_RANGE");
_dbugActivityRecorder.EndContext();
}
#endif
return(VisualSelectionRangeSnapShot.Empty);
}
else if (!selectionRange.IsValid)
{
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder.WriteInfo("!RANGE_ON_SAME_POINT");
}
#endif
CancelSelect();
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder.EndContext();
}
#endif
return(VisualSelectionRangeSnapShot.Empty);
}
selectionRange.SwapIfUnOrder();
VisualSelectionRangeSnapShot selSnapshot = selectionRange.GetSelectionRangeSnapshot();
VisualPointInfo startPoint = selectionRange.StartPoint;
CurrentLineNumber = startPoint.LineId;
int preCutIndex = startPoint.LineCharIndex;
textLineWriter.SetCurrentCharIndex(startPoint.LineCharIndex);
if (selectionRange.IsOnTheSameLine)
{
List <EditableRun> tobeDeleteTextRuns = new List <EditableRun>();
textLineWriter.CopySelectedTextRuns(selectionRange, tobeDeleteTextRuns);
if (tobeDeleteTextRuns != null && tobeDeleteTextRuns.Count > 0)
{
commandHistory.AddDocAction(
new DocActionDeleteRange(tobeDeleteTextRuns,
selSnapshot.startLineNum,
selSnapshot.startColumnNum,
selSnapshot.endLineNum,
selSnapshot.endColumnNum));
textLineWriter.RemoveSelectedTextRuns(selectionRange);
updateJustCurrentLine = true;
}
}
else
{
int startPointLindId = startPoint.LineId;
int startPointCharIndex = startPoint.LineCharIndex;
List <EditableRun> tobeDeleteTextRuns = new List <EditableRun>();
textLineWriter.CopySelectedTextRuns(selectionRange, tobeDeleteTextRuns);
if (tobeDeleteTextRuns != null && tobeDeleteTextRuns.Count > 0)
{
commandHistory.AddDocAction(
new DocActionDeleteRange(tobeDeleteTextRuns,
selSnapshot.startLineNum,
selSnapshot.startColumnNum,
selSnapshot.endLineNum,
selSnapshot.endColumnNum));
textLineWriter.RemoveSelectedTextRuns(selectionRange);
updateJustCurrentLine = false;
textLineWriter.MoveToLine(startPointLindId);
textLineWriter.SetCurrentCharIndex(startPointCharIndex);
}
}
CancelSelect();
TextEditRenderBox.NotifyTextContentSizeChanged(visualTextSurface);
#if DEBUG
if (dbugEnableTextManRecorder)
{
_dbugActivityRecorder.EndContext();
}
#endif
return(selSnapshot);
}
public void OnKeyDown(UIKeyEventArgs e)
{
this.SetCaretState(true);
if (!e.HasKeyData)
{
return;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
this.DoHome(e.Shift);
} break;
case UIKeys.End:
{
this.DoEnd(e.Shift);
} break;
case UIKeys.Back:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoBackspace();
}
else
{
if (!TextSurfaceEventListener.NotifyPreviewBackSpace(textSurfaceEventListener) &&
internalTextLayerController.DoBackspace())
{
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
}
EnsureCaretVisible();
} break;
case UIKeys.Delete:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoDelete();
}
else
{
VisualSelectionRangeSnapShot delpart = internalTextLayerController.DoDelete();
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
EnsureCaretVisible();
} break;
default:
{
if (textSurfaceEventListener != null)
{
UIKeys keycode = e.KeyCode;
if (keycode >= UIKeys.F1 && keycode <= UIKeys.F12)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
TextSurfaceEventListener.NotifyFunctionKeyDown(textSurfaceEventListener, keycode);
EnsureCaretVisible();
}
}
} break;
}
if (e.HasKeyData && e.Ctrl)
{
switch (e.KeyCode)
{
case UIKeys.C:
{
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
if (stBuilder.Length == 0)
{
Clipboard.Clear();
}
else
{
Clipboard.SetText(stBuilder.ToString());
}
}
ReleaseStringBuilder(stBuilder);
} break;
case UIKeys.V:
{
if (Clipboard.ContainUnicodeText())
{
internalTextLayerController.AddTextRunsToCurrentLine(
new EditableRun[] {
new EditableTextRun(this.Root,
Clipboard.GetUnicodeText(), this.CurrentTextSpanStyle)
});
EnsureCaretVisible();
}
} break;
case UIKeys.X:
{
if (internalTextLayerController.SelectionRange != null)
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
Clipboard.SetText(stBuilder.ToString());
}
internalTextLayerController.DoDelete();
EnsureCaretVisible();
ReleaseStringBuilder(stBuilder);
}
} break;
case UIKeys.Z:
{
internalTextLayerController.UndoLastAction();
EnsureCaretVisible();
} break;
case UIKeys.Y:
{
internalTextLayerController.ReverseLastUndoAction();
EnsureCaretVisible();
} break;
case UIKeys.B:
{
//TextSpanStyle style = internalTextLayerController.GetFirstTextStyleInSelectedRange();
//TextSpanStyle textStyle = null;
////test only ***
////TODO: make this more configurable
//if (style != null)
//{
// TextSpanStyle defaultBeh = ((TextSpanStyle)style);
// if (defaultBeh.FontBold)
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Black);
// }
// else
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
// }
//}
//else
//{
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
//}
//internalTextLayerController.DoFormatSelection(textStyle);
//if (internalTextLayerController.updateJustCurrentLine)
//{
// InvalidateGraphicOfCurrentLineArea();
//}
//else
//{
// InvalidateGraphics();
//}
} break;
}
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDown(textSurfaceEventListener, e.KeyCode);
}
}
public void HandleKeyDown(UIKeyEventArgs e)
{
this.SetCaretState(true);
if (!e.HasKeyData)
{
return;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
this.DoHome(e.Shift);
}
break;
case UIKeys.End:
{
this.DoEnd(e.Shift);
}
break;
case UIKeys.Back:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoBackspace();
}
else
{
if (!TextSurfaceEventListener.NotifyPreviewBackSpace(textSurfaceEventListener) &&
internalTextLayerController.DoBackspace())
{
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
}
EnsureCaretVisible();
}
break;
case UIKeys.Delete:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoDelete();
}
else
{
VisualSelectionRangeSnapShot delpart = internalTextLayerController.DoDelete();
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
EnsureCaretVisible();
}
break;
default:
{
if (textSurfaceEventListener != null)
{
UIKeys keycode = e.KeyCode;
if (keycode >= UIKeys.F1 && keycode <= UIKeys.F12)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
TextSurfaceEventListener.NotifyFunctionKeyDown(textSurfaceEventListener, keycode);
EnsureCaretVisible();
}
}
}
break;
}
if (e.HasKeyData && e.Ctrl)
{
switch (e.KeyCode)
{
case UIKeys.A:
{
//select all
//....
this.CurrentLineNumber = 0;
//start select to end
DoEnd(true); //simulate
this.CurrentLineNumber = this.LineCount - 1;
DoEnd(true);
}
break;
case UIKeys.C:
{
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
if (stBuilder.Length == 0)
{
Clipboard.Clear();
}
else
{
Clipboard.SetText(stBuilder.ToString());
}
}
ReleaseStringBuilder(stBuilder);
}
break;
case UIKeys.V:
{
if (Clipboard.ContainUnicodeText())
{
//1. we need to parse multi-line to single line
//this may need text-break services
internalTextLayerController.AddUnformattedStringToCurrentLine(
Clipboard.GetUnicodeText(), this.currentSpanStyle);
EnsureCaretVisible();
}
}
break;
case UIKeys.X:
{
if (internalTextLayerController.SelectionRange != null)
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
Clipboard.SetText(stBuilder.ToString());
}
internalTextLayerController.DoDelete();
EnsureCaretVisible();
ReleaseStringBuilder(stBuilder);
}
}
break;
case UIKeys.Z:
{
internalTextLayerController.UndoLastAction();
EnsureCaretVisible();
}
break;
case UIKeys.Y:
{
internalTextLayerController.ReverseLastUndoAction();
EnsureCaretVisible();
}
break;
case UIKeys.B:
{
//
//test add markers
//
//if (internalTextLayerController.SelectionRange != null)
//{
// //
// internalTextLayerController.SelectionRange.SwapIfUnOrder();
// VisualMarkerSelectionRange markerSelRange =
// VisualMarkerSelectionRange.CreateFromSelectionRange(
// internalTextLayerController.SelectionRange.GetSelectionRangeSnapshot());
// //then add to the marker layers
// markerSelRange.BindToTextLayer(textLayer);
// internalTextLayerController.VisualMarkers.Add(markerSelRange);
//}
//
//TextSpanStyle style = internalTextLayerController.GetFirstTextStyleInSelectedRange();
//TextSpanStyle textStyle = null;
////test only ***
////TODO: make this more configurable
//if (style != null)
//{
// TextSpanStyle defaultBeh = ((TextSpanStyle)style);
// if (defaultBeh.FontBold)
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Black);
// }
// else
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
// }
//}
//else
//{
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
//}
//internalTextLayerController.DoFormatSelection(textStyle);
//if (internalTextLayerController.updateJustCurrentLine)
//{
// InvalidateGraphicOfCurrentLineArea();
//}
//else
//{
// InvalidateGraphics();
//}
}
break;
}
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDown(textSurfaceEventListener, e.KeyCode);
}
}
public bool DoBackspace()
{
#if DEBUG
if (dbugEnableTextManRecorder)
{
dbug_BackSpaceCount++;
dbugTextManRecorder.WriteInfo("TxLMan::DoBackSpace");
dbugTextManRecorder.BeginContext();
}
#endif
VisualSelectionRangeSnapShot removeSelRange = this.RemoveSelectedText();
if (!removeSelRange.IsEmpty())
{
CancelSelect();
#if DEBUG
if (dbugEnableTextManRecorder)
{
dbugTextManRecorder.EndContext();
}
#endif
return(true);
}
else
{
updateJustCurrentLine = true;
char deletedChar = textLineWriter.DoBackspace();
if (deletedChar == '\0')
{
if (!IsOnFirstLine)
{
CurrentLineNumber--;
DoEnd();
commandHistory.AddDocAction(
new DocActionJoinWithNextLine(
textLineWriter.LineNumber, textLineWriter.CharIndex));
JoinWithNextLine();
}
#if DEBUG
if (dbugEnableTextManRecorder)
{
dbugTextManRecorder.EndContext();
}
#endif
return(false);
}
else
{
commandHistory.AddDocAction(
new DocActionDeleteChar(
deletedChar, textLineWriter.LineNumber, textLineWriter.CharIndex));
#if DEBUG
if (dbugEnableTextManRecorder)
{
dbugTextManRecorder.EndContext();
}
#endif
return(true);
}
}
}
public void AddMarkerSpan(VisualSelectionRangeSnapShot selectoinRangeSnapshot)
{
}