package objects

import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/tomo/input"
import "git.tebibyte.media/tomo/tomo/event"
import "git.tebibyte.media/tomo/objects/layouts"

var _ tomo.Object = new(LabelSwatch)

// LabelSwatch is a swatch with a label.
type LabelSwatch struct {
	box    tomo.ContainerBox
	swatch *Swatch
	label  *Label
}

// NewLabelSwatch creates a new labeled swatch with the specified color and
// label text.
func NewLabelSwatch (value color.Color, text string) *LabelSwatch {
	labelSwatch := &LabelSwatch {
		box:    tomo.NewContainerBox(),
		swatch: NewSwatch(value),
		label:  NewLabel(text),
	}
	labelSwatch.box.SetRole(tomo.R("objects", "LabelSwatch"))
	labelSwatch.swatch.label = text
	labelSwatch.label.SetAlign(tomo.AlignStart, tomo.AlignMiddle)
	labelSwatch.label.GetBox().(tomo.TextBox).SetSelectable(false)
	labelSwatch.label.GetBox().(tomo.TextBox).SetFocusable(false)
	labelSwatch.box.Add(labelSwatch.swatch)
	labelSwatch.box.Add(labelSwatch.label)
	labelSwatch.box.SetAttr(tomo.ALayout(layouts.Row { false, true }))

	labelSwatch.box.OnButtonDown(labelSwatch.handleButtonDown)
	labelSwatch.box.OnButtonUp(labelSwatch.handleButtonUp)
	return labelSwatch
}

// GetBox returns the underlying box.
func (this *LabelSwatch) GetBox () tomo.Box {
	return this.box
}

// SetFocused sets whether or not this swatch has keyboard focus. If set to
// true, this method will steal focus away from whichever object currently has
// focus.
func (this *LabelSwatch) SetFocused (focused bool) {
	this.swatch.SetFocused(focused)
}

// SetText sets the text label of the swatch.
func (this *LabelSwatch) SetText (text string) {
	this.label.SetText(text)
}

// Value returns the color of the swatch.
func (this *LabelSwatch) Value () color.Color {
	return this.swatch.Value()
}

// SetValue sets the color of the swatch.
func (this *LabelSwatch) SetValue (value color.Color) {
	this.swatch.SetValue(value)
}

// OnValueChange specifies a function to be called when the swatch's color
// is changed by the user.
func (this *LabelSwatch) OnValueChange (callback func ()) event.Cookie {
	return this.swatch.OnValueChange(callback)
}

// RGBA satisfies the color.Color interface
func (this *LabelSwatch) RGBA () (r, g, b, a uint32) {
	return this.swatch.RGBA()
}

// OnConfirm specifies a function to be called when the user selects "OK" in the
// color picker.
func (this *LabelSwatch) OnConfirm (callback func ()) event.Cookie {
	return this.swatch.OnConfirm(callback)
}

func (this *LabelSwatch) handleButtonDown (button input.Button) bool {
	if !isClickingButton(button) { return true }
	return true
}

func (this *LabelSwatch) handleButtonUp (button input.Button) bool {
	if !isClickingButton(button) { return true }
	if this.box.Window().MousePosition().In(this.box.Bounds()) {
		this.swatch.SetFocused(true)
		this.swatch.Choose()
	}
	return true
}