public override IEnumerable <RenderElement> GetRenderElementReverseIter()
{
if (_lineCollection != null)
{
if ((_layerFlags & FLOWLAYER_HAS_MULTILINE) != 0)
{
List <EditableTextLine> lines = (List <EditableTextLine>)_lineCollection;
int j = lines.Count;
for (int i = lines.Count; i > -1; --i)
{
EditableTextLine ln = lines[i];
LinkedListNode <EditableRun> veNode = ln.Last;
while (veNode != null)
{
yield return(veNode.Value);
veNode = veNode.Previous;
}
}
}
else
{
EditableTextLine ln = (EditableTextLine)_lineCollection;
LinkedListNode <EditableRun> veNode = ln.Last;
while (veNode != null)
{
yield return(veNode.Value);
veNode = veNode.Previous;
}
}
}
}
void AddLineBreakBefore(EditableRun beforeTextRun)
{
if (beforeTextRun == null)
{
this.EndWithLineBreak = true;
EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
}
else
{
List <EditableRun> tempTextRuns = new List <EditableRun>();
if (beforeTextRun != null)
{
foreach (EditableRun t in GetVisualElementForward(beforeTextRun))
{
tempTextRuns.Add(t);
}
}
this.EndWithLineBreak = true;
EditableTextLine newTextline = EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
this.LocalSuspendLineReArrange();
newTextline.LocalSuspendLineReArrange();
int j = tempTextRuns.Count;
for (int i = 0; i < j; ++i)
{
EditableRun t = tempTextRuns[i];
this.Remove(t);
newTextline.AddLast(t);
}
this.LocalResumeLineReArrange();
newTextline.LocalResumeLineReArrange();
}
}
void AddLineBreakAfter(EditableRun afterTextRun)
{
if (afterTextRun == null)
{
//add line break on the last end
this.EndWithLineBreak = true;
EditableTextLine newline = EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
if (EditableFlowLayer.LineCount - 1 != newline.LineNumber)
{
newline.EndWithLineBreak = true;
}
}
else if (afterTextRun.NextTextRun == null)
{
this.EndWithLineBreak = true;
EditableTextLine newline = EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
if (EditableFlowLayer.LineCount - 1 != newline.LineNumber)
{
newline.EndWithLineBreak = true;
}
}
else
{
List <EditableRun> tempTextRuns = new List <EditableRun>(this.RunCount);
if (afterTextRun != null)
{
foreach (EditableRun t in GetVisualElementForward(afterTextRun.NextTextRun))
{
tempTextRuns.Add(t);
}
}
this.EndWithLineBreak = true;
this.LocalSuspendLineReArrange();
EditableTextLine newTextline = EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
int j = tempTextRuns.Count;
newTextline.LocalSuspendLineReArrange(); int cx = 0;
for (int i = 0; i < j; ++i)
{
EditableRun t = tempTextRuns[i];
this.Remove(t);
newTextline.AddLast(t);
RenderElement.DirectSetLocation(t, cx, 0);
cx += t.Width;
}
newTextline.LocalResumeLineReArrange();
this.LocalResumeLineReArrange();
}
}
public void AddBefore(EditableRun beforeVisualElement, EditableRun visualElement)
{
EditableTextLine targetLine = beforeVisualElement.OwnerEditableLine;
if (targetLine != null)
{
targetLine.AddBefore(beforeVisualElement, visualElement);
}
else
{
throw new NotSupportedException();
}
}
public void AddAfter(EditableRun afterVisualElement, EditableRun visualElement)
{
EditableTextLine targetLine = afterVisualElement.OwnerEditableLine;
if (targetLine != null)
{
targetLine.AddAfter(afterVisualElement, visualElement);
}
else
{
throw new NotSupportedException();
}
}
public TextLineReader(EditableTextFlowLayer flowlayer)
{
#if DEBUG
this.dbug_MyId = dbugTotalId;
dbugTotalId++;
#endif
_textFlowLayer = flowlayer;
flowlayer.Reflow += new EventHandler(flowlayer_Reflow);
_currentLine = flowlayer.GetTextLine(0);
if (_currentLine.FirstRun != null)
{
_currentTextRun = _currentLine.FirstRun;
}
}
public void MoveToLine(int lineNumber)
{
_currentLine = _textFlowLayer.GetTextLine(lineNumber);
_currentLineY = _currentLine.Top;
//if current line is a blank line
//not first run => currentTextRun= null
_currentTextRun = (EditableRun)_currentLine.FirstRun;
_rCharOffset = 0;
_rPixelOffset = 0;
caret_char_index = 0;
_caretXPos = 0;
}
public VisualPointInfo FindTextRunOnPosition(int x, int y)
{
if (y < 0)
{
return(null);
}
else
{
int j = _textLineWriter.LineCount;
if (j > 0)
{
EditableTextLine textLine = _textLineWriter.GetTextLineAtPos(y);
if (textLine != null)
{
return(textLine.GetTextPointInfoFromCaretPoint(x));
}
}
return(null);
}
}
public override void Clear()
{
if ((_layerFlags & FLOWLAYER_HAS_MULTILINE) != 0)
{
List <EditableTextLine> lines = (List <EditableTextLine>)_lineCollection;
for (int i = lines.Count - 1; i > -1; --i)
{
EditableTextLine line = lines[i];
line.EditableFlowLayer = null;
line.Clear();
}
lines.Clear();
_lineCollection = new EditableTextLine(this);
FlowLayerHasMultiLines = false;
}
else
{
((EditableTextLine)_lineCollection).Clear();
}
}
internal void Remove(int lineId)
{
#if DEBUG
if (lineId < 0)
{
throw new NotSupportedException();
}
#endif
if ((_layerFlags & FLOWLAYER_HAS_MULTILINE) == 0)
{
return;
}
List <EditableTextLine> lines = (List <EditableTextLine>)_lineCollection;
if (lines.Count < 2)
{
return;
}
EditableTextLine removedLine = lines[lineId];
int cy = removedLine.Top;
//
lines.RemoveAt(lineId);
removedLine.EditableFlowLayer = null;
int j = lines.Count;
for (int i = lineId; i < j; ++i)
{
EditableTextLine line = lines[i];
line.SetTop(cy);
line.SetLineNumber(i);
cy += line.ActualLineHeight;
}
if (lines.Count == 1)
{
_lineCollection = lines[0];
FlowLayerHasMultiLines = false;
}
}
internal EditableTextLine SplitToNewLine(EditableRun startVisualElement)
{
LinkedListNode <EditableRun> curNode = GetLineLinkedNode(startVisualElement);
EditableTextLine newSplitedLine = EditableFlowLayer.InsertNewLine(_currentLineNumber + 1);
newSplitedLine.LocalSuspendLineReArrange();
while (curNode != null)
{
LinkedListNode <EditableRun> tobeRemovedNode = curNode;
curNode = curNode.Next;
if (tobeRemovedNode.List != null)
{
EditableRun tmpv = tobeRemovedNode.Value;
_runs.Remove(tobeRemovedNode);
newSplitedLine.AddLast(tmpv);
}
else
{
}
}
newSplitedLine.LocalResumeLineReArrange();
return(newSplitedLine);
}
void JoinWithNextLine()
{
if (!IsLastLine)
{
EditableTextLine lowerLine = EditableFlowLayer.GetTextLine(_currentLineNumber + 1);
this.LocalSuspendLineReArrange();
int cx = 0;
EditableRun lastTextRun = (EditableRun)this.LastRun;
if (lastTextRun != null)
{
cx = lastTextRun.Right;
}
foreach (EditableRun r in lowerLine._runs)
{
this.AddLast(r);
EditableRun.DirectSetLocation(r, cx, 0);
cx += r.Width;
}
this.LocalResumeLineReArrange();
this.EndWithLineBreak = lowerLine.EndWithLineBreak;
EditableFlowLayer.Remove(lowerLine._currentLineNumber);
}
}
public void JoinWithNextLine()
{
EditableTextLine.InnerDoJoinWithNextLine(this.CurrentLine);
EnsureCurrentTextRun();
}
//
internal void SetInternalLinkedNode(LinkedListNode <EditableRun> linkedNode, EditableTextLine ownerTextLine)
{
_ownerTextLine = ownerTextLine;
_editableRunInternalLinkedNode = linkedNode;
EditableRun.SetParentLink(this, ownerTextLine);
}
public static void InnerCopyLineContent(EditableTextLine line, StringBuilder stBuilder)
{
line.CopyLineContent(stBuilder);
}
internal void Remove(VisualSelectionRange selectionRange)
{
EditableVisualPointInfo startPoint = selectionRange.StartPoint;
EditableVisualPointInfo endPoint = selectionRange.EndPoint;
if (startPoint.TextRun != null)
{
if (startPoint.TextRun == endPoint.TextRun)
{
EditableRun removedRun = (EditableRun)startPoint.TextRun;
EditableRun.InnerRemove(removedRun,
startPoint.RunLocalSelectedIndex,
endPoint.LineCharIndex - startPoint.LineCharIndex, false);
if (removedRun.CharacterCount == 0)
{
if (startPoint.LineId == _currentLineNumber)
{
this.Remove(removedRun);
}
else
{
EditableTextLine line = EditableFlowLayer.GetTextLine(startPoint.LineId);
line.Remove(removedRun);
}
}
}
else
{
EditableVisualPointInfo newStartPoint = null;
EditableVisualPointInfo newStopPoint = null;
EditableTextLine startLine = null;
EditableTextLine stopLine = null;
if (startPoint.LineId == _currentLineNumber)
{
startLine = this;
}
else
{
startLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
newStartPoint = startLine.Split(startPoint);
if (endPoint.LineId == _currentLineNumber)
{
stopLine = this;
}
else
{
stopLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
newStopPoint = stopLine.Split(endPoint);
if (startLine == stopLine)
{
if (newStartPoint.TextRun != null)
{
LinkedList <EditableRun> tobeRemoveRuns = new LinkedList <EditableRun>();
if (newStartPoint.LineCharIndex == 0)
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(
(EditableRun)newStartPoint.TextRun,
(EditableRun)newStopPoint.TextRun))
{
tobeRemoveRuns.AddLast(t);
}
}
else
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(
newStartPoint.TextRun.NextTextRun,
(EditableRun)newStopPoint.TextRun))
{
tobeRemoveRuns.AddLast(t);
}
}
startLine.LocalSuspendLineReArrange();
foreach (EditableRun t in tobeRemoveRuns)
{
startLine.Remove(t);
}
startLine.LocalResumeLineReArrange();
}
else
{
//this may be the blank line
startLine.Clear();
#if DEBUG
//TODO: review here again
//System.Diagnostics.Debug.WriteLine("EditableTextLine_adv1");
#endif
}
}
else
{
int startLineId = newStartPoint.LineId;
int stopLineId = newStopPoint.LineId;
if (newStopPoint.LineCharIndex > 0)
{
stopLine.RemoveLeft((EditableRun)newStopPoint.TextRun);
}
for (int i = stopLineId - 1; i > startLineId; i--)
{
EditableTextLine line = EditableFlowLayer.GetTextLine(i);
line.Clear();
line.JoinWithNextLine();
}
if (newStartPoint.LineCharIndex == 0)
{
startLine.RemoveRight((EditableRun)newStartPoint.TextRun);
}
else
{
EditableRun nextRun = ((EditableRun)newStartPoint.TextRun).NextTextRun;
if (nextRun != null && !nextRun.IsLineBreak)
{
startLine.RemoveRight(nextRun);
}
}
startLine.JoinWithNextLine();
}
}
}
else
{
VisualPointInfo newStartPoint = null;
VisualPointInfo newStopPoint = null;
EditableTextLine startLine = null;
EditableTextLine stopLine = null;
if (startPoint.LineId == _currentLineNumber)
{
startLine = this;
}
else
{
startLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
newStartPoint = startLine.Split(startPoint);
if (endPoint.LineId == _currentLineNumber)
{
stopLine = this;
}
else
{
stopLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
newStopPoint = stopLine.Split(endPoint);
if (startLine == stopLine)
{
if (newStartPoint.TextRun != null)
{
LinkedList <EditableRun> tobeRemoveRuns = new LinkedList <EditableRun>();
if (newStartPoint.LineCharIndex == -1)
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(
(EditableRun)newStartPoint.TextRun,
(EditableRun)newStopPoint.TextRun))
{
tobeRemoveRuns.AddLast(t);
}
}
else
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(
newStartPoint.TextRun.NextTextRun,
(EditableRun)newStopPoint.TextRun))
{
tobeRemoveRuns.AddLast(t);
}
}
foreach (EditableRun t in tobeRemoveRuns)
{
startLine.Remove(t);
}
}
else
{
throw new NotSupportedException();
}
}
else
{
int startLineId = newStartPoint.LineId;
int stopLineId = newStopPoint.LineId;
if (newStopPoint.LineCharIndex > -1)
{
stopLine.RemoveLeft((EditableRun)newStopPoint.TextRun);
}
for (int i = stopLineId - 1; i > startLineId; i--)
{
EditableTextLine line = EditableFlowLayer.GetTextLine(i);
line.Clear();
line.JoinWithNextLine();
}
if (newStartPoint.LineCharIndex == -1)
{
//TODO: review here again
//at this point newStartPoint.TextRun should always null
if (newStartPoint.TextRun != null)
{
startLine.RemoveRight((EditableRun)newStartPoint.TextRun);
}
}
else
{
//at this point newStartPoint.TextRun should always null
//TODO newStartPoint.TextRun == null???
if (newStartPoint.TextRun != null)
{
EditableRun nextRun = newStartPoint.TextRun.NextTextRun;
if (nextRun != null && !nextRun.IsLineBreak)
{
startLine.RemoveRight(nextRun);
}
}
}
startLine.JoinWithNextLine();
}
}
}
internal EditableVisualPointInfo[] Split(VisualSelectionRange selectionRange)
{
selectionRange.SwapIfUnOrder();
EditableVisualPointInfo startPoint = selectionRange.StartPoint;
EditableVisualPointInfo endPoint = selectionRange.EndPoint;
if (startPoint.TextRun == endPoint.TextRun)
{
EditableRun toBeCutTextRun = startPoint.TextRun;
EditableRun preCutTextRun = (EditableRun)toBeCutTextRun.LeftCopy(startPoint.RunLocalSelectedIndex);
EditableRun middleCutTextRun = (EditableRun)toBeCutTextRun.Copy(startPoint.RunLocalSelectedIndex, endPoint.LineCharIndex - startPoint.LineCharIndex);
EditableRun postCutTextRun = (EditableRun)toBeCutTextRun.Copy(endPoint.RunLocalSelectedIndex);
EditableVisualPointInfo newStartRangePointInfo = null;
EditableVisualPointInfo newEndRangePointInfo = null;
EditableTextLine line = this;
if (startPoint.LineId != _currentLineNumber)
{
line = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
line.LocalSuspendLineReArrange();
if (preCutTextRun != null)
{
line.AddBefore(toBeCutTextRun, preCutTextRun);
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X,
preCutTextRun, startPoint.TextRunCharOffset, startPoint.TextRunPixelOffset);
}
else
{
EditableRun prevTxtRun = GetPrevTextRun((EditableRun)startPoint.TextRun);
if (prevTxtRun != null)
{
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X, prevTxtRun, startPoint.TextRunCharOffset - preCutTextRun.CharacterCount,
startPoint.TextRunPixelOffset - prevTxtRun.Width);
}
else
{
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId,
startPoint.LineCharIndex,
0,
null,
0, 0);
}
}
if (postCutTextRun != null)
{
line.AddAfter(toBeCutTextRun, postCutTextRun);
newEndRangePointInfo =
CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
middleCutTextRun,
startPoint.TextRunCharOffset + middleCutTextRun.CharacterCount,
startPoint.TextRunPixelOffset + middleCutTextRun.Width);
}
else
{
EditableRun nextTxtRun = GetNextTextRun((EditableRun)endPoint.TextRun);
if (nextTxtRun != null)
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
nextTxtRun,
endPoint.TextRunPixelOffset + endPoint.TextRun.CharacterCount,
endPoint.TextRunPixelOffset + endPoint.TextRun.Width);
}
else
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
middleCutTextRun,
endPoint.TextRunCharOffset,
endPoint.TextRunPixelOffset);
}
}
if (middleCutTextRun != null)
{
line.AddAfter(toBeCutTextRun, middleCutTextRun);
}
else
{
throw new NotSupportedException();
}
line.Remove(toBeCutTextRun);
line.LocalResumeLineReArrange();
return(new EditableVisualPointInfo[] { newStartRangePointInfo, newEndRangePointInfo });
}
else
{
EditableTextLine workingLine = this;
if (startPoint.LineId != _currentLineNumber)
{
workingLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
EditableVisualPointInfo newStartPoint = workingLine.Split(startPoint);
workingLine = this;
if (endPoint.LineId != _currentLineNumber)
{
workingLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
EditableVisualPointInfo newEndPoint = workingLine.Split(endPoint);
return(new EditableVisualPointInfo[] { newStartPoint, newEndPoint });
}
}
public static void InnerDoJoinWithNextLine(EditableTextLine line)
{
line.JoinWithNextLine();
}
public void Copy(VisualSelectionRange selectionRange, List <EditableRun> output)
{
EditableVisualPointInfo startPoint = selectionRange.StartPoint;
EditableVisualPointInfo endPoint = selectionRange.EndPoint;
if (startPoint.TextRun != null)
{
if (startPoint.TextRun == endPoint.TextRun)
{
EditableRun elem =
startPoint.TextRun.Copy(
startPoint.RunLocalSelectedIndex,
endPoint.LineCharIndex - startPoint.LineCharIndex);
if (elem != null)
{
output.Add(elem);
}
}
else
{
EditableTextLine startLine = null;
EditableTextLine stopLine = null;
if (startPoint.LineId == _currentLineNumber)
{
startLine = this;
}
else
{
startLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
if (endPoint.LineId == _currentLineNumber)
{
stopLine = this;
}
else
{
stopLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
if (startLine == stopLine)
{
EditableRun postCutTextRun = startPoint.TextRun.Copy(startPoint.RunLocalSelectedIndex);
if (postCutTextRun != null)
{
output.Add(postCutTextRun);
}
if (startPoint.TextRun.NextTextRun != endPoint.TextRun)
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(startPoint.TextRun.NextTextRun, endPoint.TextRun.PrevTextRun))
{
output.Add(t.Clone());
}
}
EditableRun preCutTextRun = endPoint.TextRun.LeftCopy(endPoint.RunLocalSelectedIndex);
if (preCutTextRun != null)
{
output.Add(preCutTextRun);
}
}
else
{
int startLineId = startPoint.LineId;
int stopLineId = endPoint.LineId;
startLine.RightCopy(startPoint, output);
for (int i = startLineId + 1; i < stopLineId; i++)
{
output.Add(new EditableTextRun(this.Root, '\n', this.CurrentTextSpanStyle));
EditableTextLine line = EditableFlowLayer.GetTextLine(i);
line.Copy(output);
}
if (endPoint.LineCharIndex > -1)
{
output.Add(new EditableTextRun(this.Root, '\n', this.CurrentTextSpanStyle));
stopLine.LeftCopy(endPoint, output);
}
}
}
}
else
{
EditableTextLine startLine = null;
EditableTextLine stopLine = null;
if (startPoint.LineId == _currentLineNumber)
{
startLine = this;
}
else
{
startLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
if (endPoint.LineId == _currentLineNumber)
{
stopLine = this;
}
else
{
stopLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
if (startLine == stopLine)
{
if (startPoint.LineCharIndex == -1)
{
foreach (EditableRun t in EditableFlowLayer.TextRunForward(startPoint.TextRun, endPoint.TextRun.PrevTextRun))
{
output.Add(t.Clone());
}
EditableRun postCutTextRun = endPoint.TextRun.Copy(endPoint.RunLocalSelectedIndex + 1);
if (postCutTextRun != null)
{
output.Add(postCutTextRun);
}
}
else
{
EditableRun postCutTextRun = startPoint.TextRun.Copy(startPoint.RunLocalSelectedIndex + 1);
if (postCutTextRun != null)
{
output.Add(postCutTextRun);
}
foreach (EditableRun t in EditableFlowLayer.TextRunForward(startPoint.TextRun.NextTextRun, endPoint.TextRun.PrevTextRun))
{
output.Add(t.Clone());
}
EditableRun preCutTextRun = endPoint.TextRun.LeftCopy(startPoint.RunLocalSelectedIndex);
if (preCutTextRun != null)
{
output.Add(preCutTextRun);
}
}
}
else
{
int startLineId = startPoint.LineId;
int stopLineId = endPoint.LineId;
startLine.RightCopy(startPoint, output);
for (int i = startLineId + 1; i < stopLineId; i++)
{
output.Add(new EditableTextRun(this.Root, '\n', this.CurrentTextSpanStyle));
EditableTextLine line = EditableFlowLayer.GetTextLine(i);
line.Copy(output);
}
stopLine.LeftCopy(endPoint, output);
}
}
}