On Sep 5, 2010, at 7:33 PM, Brad Stone wrote:
> I want to highlight different substrings contained in controls in a window
> (two different comboBoxes for example) programmatically when the user is
> searching for a subString. I can do this for one comboBox but not both
> simultaneously. Here's one.
>
> NSString *s = [titleComboBox stringValue];
> NSRange r = [s rangeOfString:searchText options:NSCaseInsensitiveSearch
> range:NSMakeRange(0, [s length])];
> [titleComboBox selectText:w];
> if (r.location != NSNotFound) {
> // this is needed to select the substring
> NSText *textEditor = [w fieldEditor:YES forObject:titleComboBox];
> [textEditor setSelectedRange:r];
> }
>
> But this only highlights the text in the titleComboBox. If I then repeat
> this to highlight the text in the categoryComboBox by repeating the code,
> titleComboBox gets deselected and categoryComboBox gets selected. I want to
> highlight them both simultaneously. I'd also rather use the big yellow
> highlight like with the find panel (but that's later).
>
> Is this possible?
Your code will not work because there can be only one active field editor at a
time, and you are controlling the text by manipulating the selectedRange
property of the field editor.
I would be inclined to try using attributed strings to show the selection.
Maybe something like this:
if (r.location != NSNotFound) {
NSMutableAttributedString *stringWithSelection =
[[NSMutableAttributedString alloc] initWithString:s];
[stringWithSelection addAttribute: NSBackgroundColorAttributeName
value:[NSColor yellowColor] range:r];
// set control value to stringWithSelection, using whatever technique
is appropriate
[stringWithSelection release];
}
To deselect, just set the control value to [[control attributedStringValue]
string].
There are other ways to do what you need. This might be the most
straightforward.
-Ross
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