// 6 april 2015

// This is not an IDL file for the conventional RPC or Microsoft IDLs.
// Instead, this is for a custom IDL of my own creation.
// You can find it at github.com/andlabs/pgidl

package ui {

raw "#include <stddef.h>";
raw "#include <stdint.h>";

raw "#ifndef _UI_EXTERN";
raw "#define _UI_EXTERN extern";
raw "#endif";

struct InitOptions {
	field Size size_t;
};

func Init(options *InitOptions) *const char;
func Uninit(void);
func FreeInitError(err *const char);

func Main(void);
func Quit(void);

func OnShouldQuit(f *func(data *void) int, data *void);

func FreeText(text *char);

func RegisterType(name *const char, parent uintmax_t, size size_t) uintmax_t;
func IsA(p *void, type uintmax_t, fail int) *void;
struct Typed {
	field Type uintmax_t;
};
raw "#define uiTyped(this) ((uiTyped *) (this))";

raw "typedef struct uiSizingSys uiSizingSys;";

struct Sizing {
	field XPadding intmax_t;
	field YPadding intmax_t;
	field Sys *uiSizingSys;
};

interface Control {
	field Internal *void;		// for use by ui only
	func Destroy(void);
	func Handle(void) uintptr_t;
	func Parent(void) *Control;
	func SetParent(c *Control);
	func PreferredSize(d *Sizing, width *intmax_t, height *intmax_t);
	func Resize(x intmax_t, y intmax_t, width intmax_t, height intmax_t, d *Sizing);
	func QueueResize(void);
	func Sizing(void) *Sizing;
	func ContainerVisible(void) int;
	func Show(void);
	func Hide(void);
	func ContainerEnabled(void) int;
	func Enable(void);
	func Disable(void);
	func UpdateState(void);
	func StartZOrder(void) uintptr_t;
	func SetZOrder(param uintptr_t) uintptr_t;
	func HasTabStops(void) int;
	func CommitDestroy(void);
	func CommitSetParent(parent *uiControl);
	func CommitShow(void);
	func CommitHide(void);
	func CommitEnable(void);
	func CommitDisable(void);
	func ContainerUpdateState(void);
};

func NewControl(type uintmax_t) *Control;

raw "#define uiDefineControlType(typename, funcname, realtype) \\";
raw "	static uintmax_t type_ ## typename = 0; \\";
raw "	uintmax_t funcname(void) \\";
raw "	{ \\";
raw "		if (type_ ## typename == 0) \\";
raw "			type_ ## typename = uiRegisterType(#typename, uiTypeControl(), sizeof (realtype)); \\";
raw "		return type_ ## typename; \\";
raw "	}";

func FreeSizing(d *Sizing);

func MakeContainer(c *Control) uintptr_t;

interface Window from Control {
	func Title(void) *char;
	func SetTitle(title *const char);
	func OnClosing(f *func(w *Window, data *void) int, data *void);
	func SetChild(c *Control);
	func Margined(void) int;
	func SetMargined(margined int);
	func ResizeChild(void);
};
func NewWindow(title *const char, width int, height int, hasMenubar int) *Window;

interface Button from Control {
	func Text(void) *char;
	func SetText(text *const char);
	func OnClicked(f *func(b *Button, data *void), data *void);
};
func NewButton(text *const char) *Button;

interface Box from Control {
	func Append(c *Control, stretchy int);
	func Delete(index uintmax_t);
	func Padded(void) int;
	func SetPadded(padded int);
};
func NewHorizontalBox(void) *Box;
func NewVerticalBox(void) *Box;

interface Entry from Control {
	func Text(void) *char;
	func SetText(text *const char);
	func OnChanged(f *func(e *Entry, data *void), data *void);
	func ReadOnly(void) int;
	func SetReadOnly(readonly int);
};
func NewEntry(void) *Entry;

interface Checkbox from Control {
	func Text(void) *char;
	func SetText(text *const char);
	func OnToggled(f *func(c *Checkbox, data *void), data *void);
	func Checked(void) int;
	func SetChecked(checked int);
};
func NewCheckbox(text *const char) *Checkbox;

interface Label from Control {
	func Text(void) *char;
	func SetText(text *const char);
};
func NewLabel(text *const char) *Label;

interface Tab from Control {
	func Append(name *const char, c *Control);
	func InsertAt(name *const char, before uintmax_t, c *Control);
	func Delete(index uintmax_t);
	func NumPages(void) uintmax_t;
	func Margined(page uintmax_t) int;
	func SetMargined(page uintmax_t, margined int);
};
func NewTab(void) *Tab;

interface Group from Control {
	func Title(void) *char;
	func SetTitle(title *const char);
	func SetChild(c *Control);
	func Margined(void) int;
	func SetMargined(margined int);
};
func NewGroup(text *const char) *Group;

// spinbox/slider rules:
// setting value outside of range will automatically clamp
// initial value is minimum
// complaint if min >= max?

interface Spinbox from Control {
	func Value(void) intmax_t;
	func SetValue(value intmax_t);
	func OnChanged(f *func(s *Spinbox, data *void), data *void);
};
func NewSpinbox(min intmax_t, max intmax_t) *Spinbox;

interface ProgressBar from Control {
	// TODO Value()
	func SetValue(n int);
};
func NewProgressBar(void) *ProgressBar;

interface Slider from Control {
	func Value(void) intmax_t;
	func SetValue(value intmax_t);
	func OnChanged(f *func(s *Slider, data *void), data *void);
};
func NewSlider(min intmax_t, max intmax_t) *Slider;

interface Separator from Control {
};
func NewHorizontalSeparator(void) *Separator;

interface Combobox from Control {
	func Append(text *const char);
};
func NewCombobox(void) *Combobox;
func NewEditableCombobox(void) *Combobox;

interface RadioButtons from Control {
	func Append(text *const char);
};
func NewRadioButtons(void) *RadioButtons;

interface DateTimePicker from Control {
};
func NewDateTimePicker(void) *DateTimePicker;
func NewDatePicker(void) *DateTimePicker;
func NewTimePicker(void) *DateTimePicker;

interface Menu {
	func AppendItem(name *const char) *MenuItem;
	func AppendCheckItem(name *const char) *MenuItem;
	func AppendQuitItem(void) *MenuItem;
	func AppendPreferencesItem(void) *MenuItem;
	func AppendAboutItem(void) *MenuItem;
	func AppendSeparator(void);
};
func NewMenu(name *const char) *Menu;

interface MenuItem {
	func Enable(void);
	func Disable(void);
	func OnClicked(f *func(sender *MenuItem, window *Window, data *void), data *void);
	func Checked(void) int;
	func SetChecked(checked int);
};

func OpenFile(void) *char;
func SaveFile(void) *char;
func MsgBox(title *const char, description *const char);
func MsgBoxError(title *const char, description *const char);

};