When moving down a text editor line-by-line, I rely on the common behavior
of automatically moving to the end of the line when trying to scroll down
past the last line. Similar for when scrolling up past the first line. Leo
doesn't have this behavior, so I wrote the below script. Thought I'd share
in case anyone else finds it useful.
@settings->@shortcuts:
previous-or-beginning-of-line ! text = Up
next-or-end-of-line ! text = Down
previous-or-beginning-of-line-extend-selection ! text = Shift-Up
next-or-end-of-line-extend-selection ! text = Shift-Down
@script
def lineScrollHelper(c, prefix1, prefix2, suffix):
w = c.frame.body.wrapper
ins = w.getInsertPoint()
c.inCommand = False
c.executeMinibufferCommand(prefix1 + 'line' + suffix)
ins2 = w.getInsertPoint()
# If the cursor didn't change, then go to beginning/end of line
if ins == ins2:
c.executeMinibufferCommand(prefix2 + 'of-line' + suffix)
@g.command('next-or-end-of-line')
def nextOrEndOfLine(event):
lineScrollHelper(event['c'], 'next-', 'end-', '')
@g.command('previous-or-beginning-of-line')
def previousOrBeginningOfLine(event):
lineScrollHelper(event['c'], 'previous-', 'beginning-', '')
@g.command('next-or-end-of-line-extend-selection')
def nextOrEndOfLineExtendSelection(event):
lineScrollHelper(event['c'], 'next-', 'end-', '-extend-selection')
@g.command('previous-or-beginning-of-line-extend-selection')
def previousOrBeginningOfLineExtendSelection(event):
lineScrollHelper(event['c'], 'previous-', 'beginning-',
'-extend-selection')
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