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Add code to adjust the selected range after every change.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@15752 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Alexander Malmberg 2003-01-28 21:57:22 +00:00
parent eaec5ebcea
commit 36c596fdf6
2 changed files with 30 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2003-01-28 22:54 Alexander Malmberg <alexander@malmberg.org>
* Source/NSLayoutManager.m (-textStorage:edited:range:changeInLength:
invalidatedRange:): Add code to adjust the selected range after each
change.
2003-01-28 22:20 Alexander Malmberg <alexander@malmberg.org>
* Source/NSTextView.m (-initWithFrame:textContainer:): Make the

24
Source/NSLayoutManager.m
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@ -1042,6 +1042,30 @@ TODO: not really clear what these should do
changeInLength: lengthChange
invalidatedRange: invalidatedRange];
if ((mask & NSTextStorageEditedCharacters) && lengthChange)
{
/*
Adjust the selected range so it's still valid. We don't try to
be smart here (smart adjustments will have to be done by whoever
made the change), we just want to keep it in range to avoid crashes.
TODO: It feels slightly ugly to be doing this here, but there aren't
many other places that can do this, and it gives reasonable behavior
for select-only text views.
One option is to only adjust when absolutely necessary to keep the
selected range valid.
*/
if (_selected_range.location >= range.location + range.length - lengthChange)
{
_selected_range.location += lengthChange;
}
else if (_selected_range.location + _selected_range.length >= range.location)
{
_selected_range.length += lengthChange;
}
}
/* Invalidate display from the first glyph not laid out (which will
generally be the first glyph to have been invalidated). */
g = layout_glyph;