[Boa Constr] Tab-key in PySourceView

[Mike C. F. <mcf...@ho...>]

Hi all,  looking at the tab-key handler in PySourceView (line 984), it could
use some enhancements.  These are patterned after the PythonWin interactions
(IDLE too if I recall), and make the indent/dedent operations with the tab
key much more natural feeling.

My attempts to integrate the changes have failed. I can't seem to get the
PySourceView to actually use my modified function (so I haven't actually
tested it to see if it works).  Although the OnKeyDown method appears like
the correct customisation point, it doesn't actually seem to get called.

	tab -- should be translated to an indent command if within the leading
whitespace of the line and there's no selection
	shift-tab -- should be translated to a dedent command if within the leading
whitespace of the line and there's no selection
	if there is a multi-line selection, then both indent and dedent (tab and
shift-tab) should operate on the selection.

Are there a lot of these 2600 line files around?
Mike

8<___________ PySourceView line 984 +
        # Tabbed indent
        elif key == 9:
            print 'tab key'
            # revised tab semantics mcfletch 2001
            if event.ShiftDown():
                print 'shift down'
                # is a dedent request
                self.OnDedent(event)
            else:
                # is likely an indent request
                # will consider it an ident request if we're actually
                # in the indentation section or we have a non-null selection
                # set...
                # selection set?
                start, stop = self.GetSelection()
                pos = self.GetCurrentPos()
                startPosition =
self.GetLineStartPos(self.GetLineFromPos(pos))
                line = self.GetLineFromPos(pos)
                prefix = string.strip(line[:(pos-startPosition)])
                def updatePosition( self, position ):
                    if old_stc:
                        self.SetCurrentPosition(position)
                    else:
                        self.SetSelectionStart(pos + indentLevel)
                if (start == stop):
                    # is a tab-key in the indentation section,
                    # update the indentation to be one level deeper...
                    if prefix:
                        # there is a non-whitespace character in front of
position,
                        # insert an actual tab character
                        self.InsertText(pos, '\t')
                        updatePosition( self, pos + 1 )
                    else:
                        # do an indent by inserting some whitespace
                        self.InsertText(pos, indentLevel*' ')
                        updatePosition( self, pos + indentLevel )
                else:
                    # non-null selection set...
                    self.OnIndent(event)
            if not self.AutoCompActive(): return

__________________________________
 Mike C. Fletcher
 Designer, VR Plumber
 http://members.home.com/mcfletch