Updated DateTimePicker.

1 files changed, 160 insertions, 0 deletions

diff --git a/datetimepicker.go b/datetimepicker.go
new file mode 100644
index 0000000..ff98ced
--- /dev/null
+++ b/datetimepicker.go
@@ -0,0 +1,160 @@
+// 12 december 2015
+
+package ui
+
+import (
+	"time"
+	"unsafe"
+)
+
+// #include <time.h>
+// #include "ui.h"
+// static inline struct tm *allocTimeStruct(void)
+// {
+// 	/* TODO handle error */
+// 	return (struct tm *) malloc(sizeof (struct tm));
+// }
+// extern void doDateTimePickerChanged(uiDateTimePicker *, void *);
+// static inline void realuiDateTimePickerOnChanged(uiDateTimePicker *d)
+// {
+// 	uiDateTimePickerOnChanged(d, doDateTimePickerOnChanged, NULL);
+// }
+import "C"
+
+// DateTimePicker is a Control that represents a field where the user
+// can enter a date and/or a time.
+type DateTimePicker struct {
+	c	*C.uiControl
+	d	*C.uiDateTimePicker
+
+	onChanged	func(*DateTimePicker)
+}
+
+// NewDateTimePicker creates a new DateTimePicker that shows
+// both a date and a time.
+func NewDateTimePicker() *DateTimePicker {
+	d := new(DateTimePicker)
+
+	d.d = C.uiNewDateTimePicker()
+	d.c = (*C.uiControl)(unsafe.Pointer(d.d))
+
+	C.realuiDateTimePickerOnChanged(d.d)
+
+	return d
+}
+
+// NewDatePicker creates a new DateTimePicker that shows
+// only a date.
+func NewDatePicker() *DateTimePicker {
+	d := new(DateTimePicker)
+
+	d.d = C.uiNewDatePicker()
+	d.c = (*C.uiControl)(unsafe.Pointer(d.d))
+
+	C.realuiDateTimePickerOnChanged(d.d)
+
+	return d
+}
+
+// NewTimePicker creates a new DateTimePicker that shows
+// only a time.
+func NewTimePicker() *DateTimePicker {
+	d := new(DateTimePicker)
+
+	d.d = C.uiNewTimePicker()
+	d.c = (*C.uiControl)(unsafe.Pointer(d.d))
+
+	C.realuiDateTimePickerOnChanged(d.d)
+
+	return d
+}
+
+// Destroy destroys the DateTimePicker.
+func (d *DateTimePicker) Destroy() {
+	C.uiControlDestroy(d.c)
+}
+
+// LibuiControl returns the libui uiControl pointer that backs
+// the Window. This is only used by package ui itself and should
+// not be called by programs.
+func (d *DateTimePicker) LibuiControl() uintptr {
+	return uintptr(unsafe.Pointer(d.c))
+}
+
+// Handle returns the OS-level handle associated with this DateTimePicker.
+// On Windows this is an HWND of a standard Windows API
+// DATETIMEPICK_CLASS class (as provided by Common Controls
+// version 6).
+// On GTK+ this is a pointer to a libui-internal class.
+// On OS X this is a pointer to a NSDatePicker.
+func (d *DateTimePicker) Handle() uintptr {
+	return uintptr(C.uiControlHandle(d.c))
+}
+
+// Show shows the DateTimePicker.
+func (d *DateTimePicker) Show() {
+	C.uiControlShow(d.c)
+}
+
+// Hide hides the DateTimePicker.
+func (d *DateTimePicker) Hide() {
+	C.uiControlHide(d.c)
+}
+
+// Enable enables the DateTimePicker.
+func (d *DateTimePicker) Enable() {
+	C.uiControlEnable(d.c)
+}
+
+// Disable disables the DateTimePicker.
+func (d *DateTimePicker) Disable() {
+	C.uiControlDisable(d.c)
+}
+
+// Time returns the time stored in the uiDateTimePicker.
+// The time is assumed to be local time.
+func (d *DateTimePicker) Time() time.Time {
+	tm := C.allocTimeStruct()
+	defer C.free(unsafe.Pointer(tm))
+	C.uiDateTimePickerTime(d.d, tm)
+	return time.Date(
+		int(tm.tm_year + 1900),
+		time.Month(tm.tm_mon + 1),
+		int(tm.tm_mday),
+		int(tm.tm_hour),
+		int(tm.tm_min),
+		int(tm.tm_sec),
+		0, time.Local)
+}
+
+// SetTime sets the time in the DateTimePicker to t.
+// t's components are read as-is; no time zone manipulations
+// are done.
+func (d *DateTimePicker) SetTime(t time.Time) {
+	tm := C.allocTimeStruct()
+	defer C.free(unsafe.Pointer(tm))
+	year, mon, mday := t.Date()
+	tm.tm_year = C.int(year - 1900)
+	tm.tm_mon = C.int(mon - 1)
+	tm.tm_mday = C.int(mday)
+	hour, min, sec := t.Time()
+	tm.tm_hour = C.int(hour)
+	tm.tm_min = C.int(min)
+	tm.tm_sec = C.int(sec)
+	tm.tm_isdst = -1
+	C.uiDateTimePickerSetTime(d.d, tm)
+}
+
+// OnChanged registers f to be run when the user changes the time in the DateTimePicker.
+// Only one function can be registered at a time.
+func (d *DateTimePicker) OnChanged(f func(*DateTimePicker)) {
+	d.onChanged = f
+}
+
+//export doDateTimePickerOnChanged
+func doDateTimePickerOnChanged(dd *C.uiDateTimePicker, data unsafe.Pointer) {
+	d := dateTimePickers[dd]
+	if d.onChanged != nil {
+		d.onChanged(d)
+	}
+}