From 04ce39a9413a183278a9092d7768ab3c606b4fef Mon Sep 17 00:00:00 2001
From: cody271 <cody271@gmx.com>
Date: Wed, 21 Feb 2018 21:47:45 -0800
Subject: [PATCH] Implement uiDateTimePickerTime() for OS X

---
 darwin/datetimepicker.m | 101 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/darwin/datetimepicker.m b/darwin/datetimepicker.m
index 7a8bdd5b..c7067af8 100644
--- a/darwin/datetimepicker.m
+++ b/darwin/datetimepicker.m
@@ -4,10 +4,82 @@
 struct uiDateTimePicker {
 	uiDarwinControl c;
 	NSDatePicker *dp;
+	void (*onChanged)(uiDateTimePicker *, void *);
+	void *onChangedData;
 };
 
+@interface datePickerDelegateClass : NSObject <NSDatePickerCellDelegate> {
+	struct mapTable *pickers;
+}
+- (void)datePickerCell:(NSDatePickerCell *)aDatePickerCell
+	validateProposedDateValue:(NSDate **)proposedDateValue
+	timeInterval:(NSTimeInterval *)proposedTimeInterval;
+- (void)doTimer:(NSTimer *)timer;
+- (void)registerPicker:(uiDateTimePicker *)b;
+- (void)unregisterPicker:(uiDateTimePicker *)b;
+@end
+
+@implementation datePickerDelegateClass
+
+- (id)init
+{
+	self = [super init];
+	if (self)
+		self->pickers = newMap();
+	return self;
+}
+
+- (void)dealloc
+{
+	mapDestroy(self->pickers);
+	[super dealloc];
+}
+
+- (void)datePickerCell:(NSDatePickerCell *)aDatePickerCell
+	validateProposedDateValue:(NSDate **)proposedDateValue
+	timeInterval:(NSTimeInterval *)proposedTimeInterval
+{
+	uiDateTimePicker *d;
+
+	d = (uiDateTimePicker *) mapGet(self->pickers, aDatePickerCell);
+	[NSTimer scheduledTimerWithTimeInterval:0
+		target:self
+		selector:@selector(doTimer:)
+		userInfo:[NSValue valueWithPointer:d]
+		repeats:NO];
+}
+
+- (void)doTimer:(NSTimer *)timer
+{
+	uiDateTimePicker *d;
+
+	d = (uiDateTimePicker*) [[timer userInfo] pointerValue];
+	(*(d->onChanged))(d, d->onChangedData);
+}
+
+- (void)registerPicker:(uiDateTimePicker *)d
+{
+	mapSet(self->pickers, d->dp.cell, d);
+	[d->dp setDelegate:self];
+}
+
+- (void)unregisterPicker:(uiDateTimePicker *)d
+{
+	[d->dp setDelegate:nil];
+	mapDelete(self->pickers, d->dp.cell);
+}
+
+@end
+
+static datePickerDelegateClass *datePickerDelegate = nil;
+
 uiDarwinControlAllDefaults(uiDateTimePicker, dp)
 
+static void defaultOnChanged(uiDateTimePicker *d, void *data)
+{
+	// do nothing
+}
+
 static uiDateTimePicker *finishNewDateTimePicker(NSDatePickerElementFlags elements)
 {
 	uiDateTimePicker *d;
@@ -15,6 +87,7 @@ static uiDateTimePicker *finishNewDateTimePicker(NSDatePickerElementFlags elemen
 	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];
@@ -23,6 +96,13 @@ static uiDateTimePicker *finishNewDateTimePicker(NSDatePickerElementFlags elemen
 	[d->dp setDatePickerMode:NSSingleDateMode];
 	uiDarwinSetControlFont(d->dp, NSRegularControlSize);
 
+	if (datePickerDelegate == nil) {
+		datePickerDelegate = [[datePickerDelegateClass new] autorelease];
+		[delegates addObject:datePickerDelegate];
+	}
+	[datePickerDelegate registerPicker:d];
+	uiDateTimePickerOnChanged(d, defaultOnChanged, NULL);
+
 	return d;
 }
 
@@ -43,12 +123,33 @@ uiDateTimePicker *uiNewTimePicker(void)
 
 void uiDateTimePickerTime(uiDateTimePicker *d, struct tm *time)
 {
+	time_t t;
+	struct tm tmbuf;
+	NSDate *date;
+	NSTimeInterval interval;
+
+	date = [d->dp dateValue];
+	interval = [[NSTimeZone systemTimeZone] secondsFromGMTForDate:date];
+	date = [date dateByAddingTimeInterval:interval];
+	t = (time_t) [date timeIntervalSince1970];
+
+	tmbuf = *gmtime(&t);
+	memcpy(time, &tmbuf, sizeof(struct tm));
 }
 
 void uiDateTimePickerSetTime(uiDateTimePicker *d, const struct tm *time)
 {
+	time_t t;
+	struct tm tmbuf;
+
+	memcpy(&tmbuf, time, sizeof(struct tm));
+	t = mktime(&tmbuf);
+
+	[d->dp setDateValue:[NSDate dateWithTimeIntervalSince1970:t]];
 }
 
 void uiDateTimePickerOnChanged(uiDateTimePicker *d, void (*f)(uiDateTimePicker *, void *), void *data)
 {
+	d->onChanged = f;
+	d->onChangedData = data;
 }