gadgets/basicCombobox.go

/*
A Labeled Combobox widget:

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

The user can then edit the dropdown field and type anything into it
*/
package gadgets

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

type BasicCombobox struct {
	ready    bool
	progname string

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

	Custom func()
}

func (d *BasicCombobox) String() string {
	if !d.Ready() {
		return ""
	}
	return d.d.String()
}

func (d *BasicCombobox) SetText(s string) {
	if !d.Ready() {
		return
	}
	d.d.SetText(s)
}

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

func (n *BasicCombobox) Hide() {
	n.l.Hide()
	n.d.Hide()
}

func (n *BasicCombobox) Show() {
	n.l.Show()
	n.d.Show()
}

func (d *BasicCombobox) Enable() {
	if d == nil {
		return
	}
	if d.d == nil {
		return
	}
	d.d.Enable()
}

func (d *BasicCombobox) Disable() {
	if d == nil {
		return
	}
	if d.d == nil {
		return
	}
	d.d.Disable()
}

func (d *BasicCombobox) SetTitle(name string) {
	if d == nil {
		return
	}
	if d.d == nil {
		return
	}
	d.d.SetText(name)
}

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

func NewBasicCombobox(p *gui.Node, label string) *BasicCombobox {
	d := BasicCombobox{
		progname: label,
		ready:    false,
	}

	// various timeout settings
	d.l = p.NewLabel(label)
	d.d = p.NewCombobox()
	d.d.Custom = func() {
		log.Log(GADGETS, "BasicCombobox.Custom() user changed value to =", d.String())
		if d.Custom != nil {
			d.Custom()
		}
	}
	d.ready = true
	return &d
}