gadgets/basicDropdown.go

/*
A Labeled Dropdown widget:

-----------------------------
|            |              |
|   Food:    |  <dropdown>  |
|            |              |
-----------------------------

This being a 'Basic Dropdown', the dropdown names must be unique
*/
package gadgets

import (
	"go.wit.com/gui"
	"go.wit.com/log"
)

type BasicDropdown struct {
	ready bool
	name  string

	parent *gui.Node // parent widget
	l      *gui.Node // label widget
	d      *gui.Node // dropdown widget

	value string
	label string

	Custom func()
}

/*
func (d *BasicDropdown) Get() string {
	if ! d.Ready() {return ""}
	return d.d.GetText()
}
*/

// Returns true if the status is valid
func (d *BasicDropdown) Ready() bool {
	if d == nil {
		return false
	}
	return d.ready
}

func (d *BasicDropdown) AddText(s string) {
	if !d.Ready() {
		return
	}
	log.Log(GADGETS, "BasicDropdown.AddText() =", s)
	d.d.AddText(s)
	return
}

func (d *BasicDropdown) SetText(s string) {
	if !d.Ready() {
		return
	}
	log.Log(GADGETS, "BasicDropdown.SetText() =", s)
	d.d.SetText(s)
	return
}

func (d *BasicDropdown) String() string {
	if !d.Ready() {
		return ""
	}
	log.Log(GADGETS, "BasicDropdown.String()", d.d.String())
	return d.d.String()
}

func (d *BasicDropdown) SetLabel(value string) bool {
	if !d.Ready() {
		return false
	}
	log.Log(GADGETS, "BasicDropdown.SetLabel() =", value)
	d.l.SetText(value)
	return true
}

/*
func (d *BasicDropdown) Set(value string) bool {
	if ! d.Ready() {return false}
	log.Log(GADGETS, "BasicDropdown.Set() =", value)
	d.d.SetText(value)
	d.value = value
	return true
}
*/

func NewBasicDropdown(p *gui.Node, name string) *BasicDropdown {
	d := BasicDropdown{
		parent: p,
		name:   name,
		ready:  false,
	}

	// various timeout settings
	d.l = p.NewLabel(name)
	d.d = p.NewDropdown()
	d.d.Custom = func() {
		d.value = d.d.String()
		log.Log(GADGETS, "BasicDropdown.Custom() user changed value to =", d.value)
		if d.Custom != nil {
			d.Custom()
		}
	}

	d.ready = true
	return &d
}