First Commit

libui-ng/darwin/datetimepicker.m

@@ -0,0 +1,172 @@
+// 14 august 2015
+#import "uipriv_darwin.h"
+
+struct uiDateTimePicker {
+	uiDarwinControl c;
+	NSDatePicker *dp;
+	void (*onChanged)(uiDateTimePicker *, void *);
+	void *onChangedData;
+	BOOL blockSendOnce;
+};
+
+// TODO see if target-action works here or not; I forgot what cody271@ originally said
+// the primary advantage of the delegate is the ability to reject changes, but libui doesn't support that yet — we should consider that API option as well
+@interface uiprivDatePickerDelegateClass : NSObject<NSDatePickerCellDelegate> {
+	uiprivMap *pickers;
+}
+- (void)datePickerCell:(NSDatePickerCell *)aDatePickerCell validateProposedDateValue:(NSDate **)proposedDateValue timeInterval:(NSTimeInterval *)proposedTimeInterval;
+- (void)doTimer:(NSTimer *)timer;
+- (void)registerPicker:(uiDateTimePicker *)d;
+- (void)unregisterPicker:(uiDateTimePicker *)d;
+@end
+
+@implementation uiprivDatePickerDelegateClass
+
+- (id)init
+{
+	self = [super init];
+	if (self)
+		self->pickers = uiprivNewMap();
+	return self;
+}
+
+- (void)dealloc
+{
+	uiprivMapDestroy(self->pickers);
+	[super dealloc];
+}
+
+- (void)datePickerCell:(NSDatePickerCell *)cell validateProposedDateValue:(NSDate **)proposedDateValue timeInterval:(NSTimeInterval *)proposedTimeInterval
+{
+	uiDateTimePicker *d;
+
+	d = (uiDateTimePicker *) uiprivMapGet(self->pickers, cell);
+	[NSTimer scheduledTimerWithTimeInterval:0
+		target:self
+		selector:@selector(doTimer:)
+		userInfo:[NSValue valueWithPointer:d]
+		repeats:NO];
+}
+
+- (void)doTimer:(NSTimer *)timer
+{
+	NSValue *v;
+	uiDateTimePicker *d;
+
+	v = (NSValue *) [timer userInfo];
+	d = (uiDateTimePicker *) [v pointerValue];
+	if (d->blockSendOnce) {
+		d->blockSendOnce = NO;
+		return;
+	}
+	(*(d->onChanged))(d, d->onChangedData);
+}
+
+- (void)registerPicker:(uiDateTimePicker *)d
+{
+	uiprivMapSet(self->pickers, d->dp.cell, d);
+	[d->dp setDelegate:self];
+}
+
+- (void)unregisterPicker:(uiDateTimePicker *)d
+{
+	[d->dp setDelegate:nil];
+	uiprivMapDelete(self->pickers, d->dp.cell);
+}
+
+@end
+
+static uiprivDatePickerDelegateClass *datePickerDelegate = nil;
+
+uiDarwinControlAllDefaultsExceptDestroy(uiDateTimePicker, dp)
+
+static void uiDateTimePickerDestroy(uiControl *c)
+{
+	uiDateTimePicker *d = uiDateTimePicker(c);
+
+	[datePickerDelegate unregisterPicker:d];
+	[d->dp release];
+	uiFreeControl(uiControl(d));
+}
+
+static void defaultOnChanged(uiDateTimePicker *d, void *data)
+{
+	// do nothing
+}
+
+// TODO consider using NSDateComponents iff we ever need the extra accuracy of not using NSTimeInterval
+void uiDateTimePickerTime(uiDateTimePicker *d, struct tm *time)
+{
+	time_t t;
+	struct tm tmbuf;
+	NSDate *date;
+
+	date = [d->dp dateValue];
+	t = (time_t) [date timeIntervalSince1970];
+
+	// Copy time to minimize a race condition
+	// time.h functions use global non-thread-safe data
+	tmbuf = *localtime(&t);
+	memcpy(time, &tmbuf, sizeof (struct tm));
+}
+
+void uiDateTimePickerSetTime(uiDateTimePicker *d, const struct tm *time)
+{
+	time_t t;
+	struct tm tmbuf;
+
+	// Copy time because mktime() modifies its argument
+	memcpy(&tmbuf, time, sizeof (struct tm));
+	t = mktime(&tmbuf);
+
+	// TODO get rid of the need for this
+	d->blockSendOnce = YES;
+	[d->dp setDateValue:[NSDate dateWithTimeIntervalSince1970:t]];
+}
+
+void uiDateTimePickerOnChanged(uiDateTimePicker *d, void (*f)(uiDateTimePicker *, void *), void *data)
+{
+	d->onChanged = f;
+	d->onChangedData = data;
+}
+
+static uiDateTimePicker *finishNewDateTimePicker(NSDatePickerElementFlags elements)
+{
+	uiDateTimePicker *d;
+
+	uiDarwinNewControl(uiDateTimePicker, d);
+
+	d->dp = [[NSDatePicker alloc] initWithFrame:NSZeroRect];
+	[d->dp setDateValue:[NSDate date]];
+	[d->dp setBordered:NO];
+	[d->dp setBezeled:YES];
+	[d->dp setDrawsBackground:YES];
+	[d->dp setDatePickerStyle:NSTextFieldAndStepperDatePickerStyle];
+	[d->dp setDatePickerElements:elements];
+	[d->dp setDatePickerMode:NSSingleDateMode];
+	uiDarwinSetControlFont(d->dp, NSRegularControlSize);
+
+	if (datePickerDelegate == nil) {
+		datePickerDelegate = [[uiprivDatePickerDelegateClass new] autorelease];
+		[uiprivDelegates addObject:datePickerDelegate];
+	}
+	[datePickerDelegate registerPicker:d];
+	uiDateTimePickerOnChanged(d, defaultOnChanged, NULL);
+
+	return d;
+}
+
+uiDateTimePicker *uiNewDateTimePicker(void)
+{
+	return finishNewDateTimePicker(NSYearMonthDayDatePickerElementFlag | NSHourMinuteSecondDatePickerElementFlag);
+}
+
+uiDateTimePicker *uiNewDatePicker(void)
+{
+	return finishNewDateTimePicker(NSYearMonthDayDatePickerElementFlag);
+}
+
+uiDateTimePicker *uiNewTimePicker(void)
+{
+	return finishNewDateTimePicker(NSHourMinuteSecondDatePickerElementFlag);
+}