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Implement view stack.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@3133 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 1998-10-27 15:24:42 +00:00
parent 4250e4a439
commit 1c6e5aa062
1 changed files with 32 additions and 20 deletions
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52
Source/NSView.m
View file

@ -61,45 +61,57 @@ static NSString *nsview_thread_key = @"NSViewThreadKey";
}
}
//
// +++ Really each thread should have a stack!
//
+ (void)pushFocusView:(NSView *)focusView
+ (void) pushFocusView:(NSView *)focusView
{
NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary];
// If no context then remove from dictionary
if (!focusView)
if (focusView)
{
[dict removeObjectForKey: nsview_thread_key];
}
else
{
[dict setObject: focusView forKey: nsview_thread_key];
}
NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary];
NSMutableArray *stack = [dict objectForKey: nsview_thread_key];
if (stack == nil)
{
stack = [[NSMutableDictionary alloc] initWithCapacity: 4];
[dict setObject: stack forKey: nsview_thread_key];
[stack release];
}
[stack addObject: focusView];
}
}
+ (NSView *)popFocusView
{
NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary];
id v;
NSMutableArray *stack = [dict objectForKey: nsview_thread_key];
NSView *v = nil;
// Remove from dictionary
v = [dict objectForKey: nsview_thread_key];
[dict removeObjectForKey: nsview_thread_key];
if (stack)
{
unsigned count = [stack count];
if (count > 0)
{
v = [stack objectAtIndex: --count];
[stack removeObjectAtIndex: count];
}
}
return v;
}
+ (NSView *)focusView
{
NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary];
NSMutableArray *stack = [dict objectForKey: nsview_thread_key];
NSView *current_view = nil;
// current_view is nil if no focused view
current_view = [dict objectForKey: nsview_thread_key];
if (stack)
{
unsigned count = [stack count];
if (count > 0)
{
current_view = [stack objectAtIndex: --count];
}
}
return current_view;
}