On 25 Apr, 2013, at 18:21 , Antonio Nunes <[email protected]> wrote:
>> I have an NSSearchField, and a menu bar submenu with the standard Find
>> items. When the search field receives some input, it performs its action and
>> an array controller is filled with search results. Now, while the search
>> field is the first responder, none of the Find items are enabled, so it is
>> impossible to issue, say a Find Next command. The Find functions perform
>> fine when just about any other item in the document window is first
>> responder. I find that surprising, but, more importantly, I cannot find a
>> way to get the Find functions to work, while the search command has focus.
>> What am I missing?
>
> I added a search field to a small test project, to see if it works correctly
> in a less complicated setup, but to no avail. The Find menu items are still
> disabled. Some more googling (previous queries did not yield any relevant
> info), showed me that this issue has bitten others before, but no solutions
> appear to have been put forward.
>
> I've checked the responder chain, and tried to catch calls to
> validateMenuItem and validateUserInterfaceItem:, to see if I can find out the
> point at which these items are disabled. But the break points don't even
> trigger. When I check the window for its first responder, when the search
> field is receiving input, it returns the document window, not the search
> field. The document window though, has its own implementation of
> validateMenuItem:, but that is never called.
>
> How can I find out where the validation for performFindPanelAction: fails?
Finally managed to solve this, and this is how I did it: (doesn't feel clean or
proper, but it works. If anyone knows of a better way to do this, I'm all ears.)
- In my NSDocument subclass, return a custom object (NSTextView subclass) for
the NSFieldEditor when the search field is activated:
- (id)windowWillReturnFieldEditor:(NSWindow *)sender toObject:(id)client
{
static NMD_SearchTextView *searchFieldEditor;
if ( client == self.searchField ) {
if ( nil == searchFieldEditor ) {
searchFieldEditor = [[NMD_SearchTextView alloc]
initWithFrame:NSZeroRect];
searchFieldEditor.document = self; // The object has a document
property to point to the NSDocument object, since we'll need that later.
}
return searchFieldEditor;
}
return nil;
}
- Implement validateMenuItem: on the subclass to enable the relevant menu items.
- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
{
if ( menuItem.action == @selector(performFindPanelAction:)) {
return menuItem.tag != NSFindPanelActionSetFindString; // No use
allowing "Use Selection for Find", since it will always be equal to the current
find string, where it exists.
} else {
return [super validateMenuItem:menuItem];
}
}
- Implement performFindPanelAction: to forward the action to the document.
- (void)performFindPanelAction:(id)sender
{
[self.document performFindPanelAction:sender];
}
- António
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