private void InsertChar(char ch)
{
if (((this.doc != null) && (this.activeText != null)) && ((ch >= ' ') || (ch == '\t')))
{
ItopVector.DrawArea.CharInfo[] infoArray1 = this.RemoveSelection();
TextUndoOperation operation1 = null;
if (infoArray1 != null)
{
operation1 = new TextUndoOperation(TextAction.Delete, this.selectionstart, infoArray1, this);
}
bool flag1 = this.doc.AcceptChanges;
this.doc.AcceptChanges = false;
string text1 = ch.ToString();
XmlText text2 = this.doc.CreateTextNode(text1);
this.doc.AcceptChanges = false;
ItopVector.DrawArea.CharInfo info1 = new ItopVector.DrawArea.CharInfo();
info1.Font = this.font;
info1.TextSvgElement = this.activeText;
info1.TextNode = text2;
info1.StringFormat = this.sf;
info1.StringFormat.LineAlignment = StringAlignment.Near;
info1.Paint = this.paint;
info1.Stroke = this.stroke;
if (this.caretindex >= this.chars.Count)
{
this.activeText.AppendChild(text2);
this.chars.Add(info1);
}
else if ((this.caretindex >= 0) && (this.caretindex < this.chars.Count))
{
this.chars.Insert(this.caretindex, info1);
XmlNode node1 = this.activeText.ChildNodes[this.caretindex];
this.activeText.InsertBefore(text2, node1);
}
ItopVector.DrawArea.CharInfo[] infoArray2 = new ItopVector.DrawArea.CharInfo[1] { info1 } ;
TextUndoOperation operation2 = new TextUndoOperation(TextAction.Insert, this.chars.IndexOf(info1), infoArray2, this);
info1.PreSibling = info1.TextNode.PreviousSibling;
bool flag2 = this.undostack.AcceptChanges;
this.undostack.AcceptChanges = true;
if (operation1 != null)
{
TextUndoOperation[] operationArray1 = new TextUndoOperation[2] { operation1, operation2 } ;
this.undostack.Push(operationArray1);
}
else
{
TextUndoOperation[] operationArray2 = new TextUndoOperation[1] { operation2 } ;
this.undostack.Push(operationArray2);
}
this.undostack.AcceptChanges = flag2;
this.caretindex++;
this.mouseAreaControl.Invalidate();
this.doc.AcceptChanges = flag1;
}
}
private bool OnDialogKey(Keys keydata)
{
int num1 = this.caretindex;
bool flag1 = false;
Keys keys1 = keydata;
if (keys1 <= Keys.Right)
{
switch (keys1)
{
case Keys.Back:
{
if (this.selectionlength > 0)
{
int num3 = this.selectionstart;
ItopVector.DrawArea.CharInfo[] infoArray2 = this.RemoveSelection();
if (infoArray2 != null)
{
TextUndoOperation operation2 = new TextUndoOperation(TextAction.Delete, num3, infoArray2, this);
bool flag3 = this.undostack.AcceptChanges;
this.undostack.AcceptChanges = true;
TextUndoOperation[] operationArray2 = new TextUndoOperation[1] { operation2 } ;
this.undostack.Push(operationArray2);
this.undostack.AcceptChanges = flag3;
}
this.mouseAreaControl.Invalidate();
return flag1;
}
if (((this.caretindex - 1) >= 0) && ((this.caretindex - 1) < this.chars.Count))
{
this.caretindex--;
this.Remove(this.caretindex);
this.mouseAreaControl.Invalidate();
}
return true;
}
case Keys.Tab:
{
this.InsertChar(' ');
return true;
}
case Keys.Return:
{
this.enterUpdate = true;
this.PostElement();
this.enterUpdate = false;
return true;
}
case Keys.End:
{
this.selectionlength = 0;
this.CaretIndex = this.chars.Count;
this.mouseAreaControl.Invalidate();
return true;
}
case Keys.Home:
{
this.CaretIndex = 0;
this.selectionlength = 0;
this.mouseAreaControl.Invalidate();
return true;
}
case Keys.Left:
{
num1--;
this.CaretIndex = Math.Max(0, Math.Min(num1, this.chars.Count));
this.selectionlength = 0;
this.mouseAreaControl.Invalidate();
return true;
}
case Keys.Up:
{
goto Label_04AB;
}
case Keys.Right:
{
num1++;
this.CaretIndex = Math.Max(0, Math.Min(num1, this.chars.Count));
this.selectionlength = 0;
this.mouseAreaControl.Invalidate();
return true;
}
}
}
else if (keys1 != Keys.Delete)
{
switch (keys1)
{
case (Keys.Shift | Keys.End):
{
if (this.selectionlength == 0)
{
this.selectionstart = this.caretindex;
}
this.caretindex = this.chars.Count;
this.selectionlength = this.caretindex - this.selectionstart;
this.mouseAreaControl.Invalidate();
return true;
}
case (Keys.Shift | Keys.Home):
{
if (this.selectionlength == 0)
{
this.selectionstart = this.caretindex;
}
this.caretindex = 0;
this.selectionlength = this.selectionstart;
this.selectionstart = 0;
this.mouseAreaControl.Invalidate();
return true;
}
case (Keys.Shift | Keys.Left):
{
if (this.selectionlength == 0)
{
this.selectionstart = this.caretindex;
}
num1--;
num1 = Math.Max(0, Math.Min(num1, this.chars.Count));
if (num1 > this.selectionstart)
{
this.selectionlength--;
}
else
{
this.selectionlength = (this.selectionstart + this.selectionlength) - num1;
this.selectionstart = num1;
}
this.caretindex = num1;
this.mouseAreaControl.Invalidate();
return true;
}
case (Keys.Shift | Keys.Up):
{
goto Label_04AB;
}
case (Keys.Shift | Keys.Right):
{
if (this.selectionlength == 0)
{
this.selectionstart = this.caretindex;
}
num1++;
this.caretindex = Math.Max(0, Math.Min(num1, this.chars.Count));
if (this.caretindex > this.selectionstart)
{
this.selectionlength = this.caretindex - this.selectionstart;
}
else
{
this.selectionlength = (this.selectionstart + this.selectionlength) - this.caretindex;
this.selectionstart = this.caretindex;
}
this.mouseAreaControl.Invalidate();
return true;
}
case (Keys.Control | Keys.A):
{
int num4;
this.caretindex = num4 = 0;
this.selectionstart = num4;
this.selectionlength = this.chars.Count;
this.mouseAreaControl.Invalidate();
return true;
}
}
}
else
{
if (this.selectionlength > 0)
{
int num2 = this.selectionstart;
ItopVector.DrawArea.CharInfo[] infoArray1 = this.RemoveSelection();
if (infoArray1 != null)
{
TextUndoOperation operation1 = new TextUndoOperation(TextAction.Delete, num2, infoArray1, this);
bool flag2 = this.undostack.AcceptChanges;
this.undostack.AcceptChanges = true;
TextUndoOperation[] operationArray1 = new TextUndoOperation[1] { operation1 } ;
this.undostack.Push(operationArray1);
this.undostack.AcceptChanges = flag2;
}
this.mouseAreaControl.Invalidate();
return flag1;
}
if (this.caretindex < this.chars.Count)
{
this.Remove(this.caretindex);
this.mouseAreaControl.Invalidate();
}
return true;
}
Label_04AB:
if ((keydata >= Keys.Space) || (keydata == Keys.Tab))
{
flag1 = false;
}
else
{
flag1 = true;
}
return flag1;
}
private void Remove(int index)
{
bool flag1 = this.doc.AcceptChanges;
this.doc.AcceptChanges = false;
if ((index >= 0) && (index < this.chars.Count))
{
ItopVector.DrawArea.CharInfo info1 = (ItopVector.DrawArea.CharInfo) this.chars[index];
XmlNode node1 = info1.TextNode.PreviousSibling;
info1.TextNode.ParentNode.RemoveChild(info1.TextNode);
if ((info1.firstChild && (info1.TextSvgElement != this.currrentText)) && (((info1.Dx != 0f) || (info1.Dy != 0f)) || ((info1.X != 0f) || (info1.Y != 0f))))
{
for (Text text1 = info1.TextSvgElement; text1 != this.currrentText; text1 = (Text) text1.ParentNode)
{
float single1;
float single2;
float single3;
text1.Y = single1 = 0f;
text1.X = single2 = single1;
text1.Dy = single3 = single2;
text1.Dx = single3;
if ((text1.Dx == info1.Dx) && (info1.Dy == info1.Dy))
{
break;
}
}
if ((index + 1) < this.chars.Count)
{
((ItopVector.DrawArea.CharInfo) this.chars[index + 1]).firstChild = true;
}
}
this.chars.Remove(info1);
ItopVector.DrawArea.CharInfo[] infoArray1 = new ItopVector.DrawArea.CharInfo[1] { info1 } ;
TextUndoOperation operation1 = new TextUndoOperation(TextAction.Delete, index, infoArray1, this);
info1.PreSibling = node1;
bool flag2 = this.undostack.AcceptChanges;
this.undostack.AcceptChanges = true;
TextUndoOperation[] operationArray1 = new TextUndoOperation[1] { operation1 } ;
this.undostack.Push(operationArray1);
this.undostack.AcceptChanges = flag2;
}
this.doc.AcceptChanges = flag1;
}