First Commit

libui-ng/darwin/combobox.m

@@ -0,0 +1,169 @@
+// 14 august 2015
+#import "uipriv_darwin.h"
+
+// NSComboBoxes have no intrinsic width; we'll use the default Interface Builder width for them.
+// NSPopUpButton is fine.
+#define comboboxWidth 96
+
+struct uiCombobox {
+	uiDarwinControl c;
+	NSPopUpButton *pb;
+	NSArrayController *pbac;
+	void (*onSelected)(uiCombobox *, void *);
+	void *onSelectedData;
+};
+
+@interface comboboxDelegateClass : NSObject {
+	uiprivMap *comboboxes;
+}
+- (IBAction)onSelected:(id)sender;
+- (void)registerCombobox:(uiCombobox *)c;
+- (void)unregisterCombobox:(uiCombobox *)c;
+@end
+
+@implementation comboboxDelegateClass
+
+- (id)init
+{
+	self = [super init];
+	if (self)
+		self->comboboxes = uiprivNewMap();
+	return self;
+}
+
+- (void)dealloc
+{
+	uiprivMapDestroy(self->comboboxes);
+	[super dealloc];
+}
+
+- (IBAction)onSelected:(id)sender
+{
+	uiCombobox *c;
+
+	c = uiCombobox(uiprivMapGet(self->comboboxes, sender));
+	(*(c->onSelected))(c, c->onSelectedData);
+}
+
+- (void)registerCombobox:(uiCombobox *)c
+{
+	uiprivMapSet(self->comboboxes, c->pb, c);
+	[c->pb setTarget:self];
+	[c->pb setAction:@selector(onSelected:)];
+}
+
+- (void)unregisterCombobox:(uiCombobox *)c
+{
+	[c->pb setTarget:nil];
+	uiprivMapDelete(self->comboboxes, c->pb);
+}
+
+@end
+
+static comboboxDelegateClass *comboboxDelegate = nil;
+
+uiDarwinControlAllDefaultsExceptDestroy(uiCombobox, pb)
+
+static void uiComboboxDestroy(uiControl *cc)
+{
+	uiCombobox *c = uiCombobox(cc);
+
+	[comboboxDelegate unregisterCombobox:c];
+	[c->pb unbind:@"contentObjects"];
+	[c->pb unbind:@"selectedIndex"];
+	[c->pbac release];
+	[c->pb release];
+	uiFreeControl(uiControl(c));
+}
+
+void uiComboboxAppend(uiCombobox *c, const char *text)
+{
+	[c->pbac addObject:uiprivToNSString(text)];
+}
+
+void uiComboboxInsertAt(uiCombobox *c, int n, const char *text)
+{
+	[c->pbac insertObject:uiprivToNSString(text) atArrangedObjectIndex:n];
+}
+
+void uiComboboxDelete(uiCombobox *c, int n)
+{
+	[c->pbac removeObjectAtArrangedObjectIndex:n];
+}
+
+void uiComboboxClear(uiCombobox *c)
+{
+	[c->pbac removeObjectsAtArrangedObjectIndexes:[[c->pbac arrangedObjects]
+		indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) {
+			// remove all items
+			return TRUE;
+	}]];
+}
+
+int uiComboboxNumItems(uiCombobox *c)
+{
+	return [[c->pbac arrangedObjects] count];
+}
+
+int uiComboboxSelected(uiCombobox *c)
+{
+	return [c->pb indexOfSelectedItem];
+}
+
+void uiComboboxSetSelected(uiCombobox *c, int n)
+{
+	[c->pb selectItemAtIndex:n];
+}
+
+void uiComboboxOnSelected(uiCombobox *c, void (*f)(uiCombobox *c, void *data), void *data)
+{
+	c->onSelected = f;
+	c->onSelectedData = data;
+}
+
+static void defaultOnSelected(uiCombobox *c, void *data)
+{
+	// do nothing
+}
+
+uiCombobox *uiNewCombobox(void)
+{
+	uiCombobox *c;
+	NSPopUpButtonCell *pbcell;
+
+	uiDarwinNewControl(uiCombobox, c);
+
+	c->pb = [[NSPopUpButton alloc] initWithFrame:NSZeroRect pullsDown:NO];
+	[c->pb setPreferredEdge:NSMinYEdge];
+	pbcell = (NSPopUpButtonCell *) [c->pb cell];
+	[pbcell setArrowPosition:NSPopUpArrowAtBottom];
+	// the font defined by Interface Builder is Menu 13, which is lol
+	// just use the regular control size for consistency
+	uiDarwinSetControlFont(c->pb, NSRegularControlSize);
+
+	// NSPopUpButton doesn't work like a combobox
+	// - it automatically selects the first item
+	// - it doesn't support duplicates
+	// but we can use a NSArrayController and Cocoa bindings to bypass these restrictions
+	c->pbac = [NSArrayController new];
+	[c->pbac setAvoidsEmptySelection:NO];
+	[c->pbac setSelectsInsertedObjects:NO];
+	[c->pbac setAutomaticallyRearrangesObjects:NO];
+	[c->pb bind:@"contentValues"
+		toObject:c->pbac
+		withKeyPath:@"arrangedObjects"
+		options:nil];
+	[c->pb bind:@"selectedIndex"
+		toObject:c->pbac
+		withKeyPath:@"selectionIndex"
+		options:nil];
+
+	if (comboboxDelegate == nil) {
+		comboboxDelegate = [[comboboxDelegateClass new] autorelease];
+		[uiprivDelegates addObject:comboboxDelegate];
+	}
+	[comboboxDelegate registerCombobox:c];
+	uiComboboxOnSelected(c, defaultOnSelected, NULL);
+
+	return c;
+}