public void SetExtension(ExtensionDirection i)
{
Extension = i;
switch (i)
{
case ExtensionDirection.None:
{
Limleft = 0;
Limright = 1;
break;
}
case ExtensionDirection.Left:
{
Limleft = -ExtensionRatio;
Limright = 1;
break;
}
case ExtensionDirection.Right:
{
Limleft = 0;
Limright = 1 + ExtensionRatio;
break;
}
case ExtensionDirection.Both:
{
Limleft = -ExtensionRatio;
Limright = 1 + ExtensionRatio;
break;
}
}
}
public void RemoveExtension(ExtensionDirection i)
{
switch (Extension)
{
case ExtensionDirection.Left:
if (i == ExtensionDirection.Left)
{
SetExtension(ExtensionDirection.None);
}
break;
case ExtensionDirection.Right:
if (i == ExtensionDirection.Right)
{
SetExtension(ExtensionDirection.None);
}
break;
case ExtensionDirection.Both:
if (i == ExtensionDirection.Left)
{
SetExtension(ExtensionDirection.Right);
}
else if (i == ExtensionDirection.Right)
{
SetExtension(ExtensionDirection.Left);
}
else
{
SetExtension(ExtensionDirection.None);
}
break;
}
}
private ExtensionDirection GetExtensionDirection()
{
bool searching = true;
ExtensionDirection direction = ExtensionDirection.None;
if (Offset != 0)
{
itsOffset++;
}
itsEndOffset--;
do
{
if (MoveLeft() && IsLeftBlockChar(itsDocument.GetCharAt(Offset)))
{
direction = ExtensionDirection.Right;
searching = false;
}
else if (MoveRight() && IsRightBlockChar(itsDocument.GetCharAt(EndOffset)))
{
if (EndOffset == (itsDocument.TextLength - 1))
{
direction = ExtensionDirection.None;
}
else
{
direction = ExtensionDirection.Left;
}
searching = false;
}
if (searching)
{
if (itsDocument.GetCharAt(Offset) == '\n')
{
direction = ExtensionDirection.Right;
}
if (itsDocument.GetCharAt(EndOffset) == '\n')
{
direction = ExtensionDirection.Left;
}
if (direction != ExtensionDirection.None)
{
searching = false;
}
}
} while (searching);
return(direction);
}
public void AddExtension(ExtensionDirection i)
{
switch (Extension)
{
case ExtensionDirection.Left:
if (i == ExtensionDirection.Right)
{
i = ExtensionDirection.Both;
}
break;
case ExtensionDirection.Right:
if (i == ExtensionDirection.Left)
{
i = ExtensionDirection.Both;
}
break;
}
SetExtension(i);
}
private void ExtendBlock()
{
ExtensionDirection direction = GetExtensionDirection();
if (direction == ExtensionDirection.Right)
{
ExtendSelectionRight();
}
if (direction == ExtensionDirection.Left)
{
ExtendSelectionLeft();
}
/*
* //TODO direction search
* if (direction == ExtensionDirection.None)
* System.Diagnostics.Debug.WriteLine("None direction");
*/
}
