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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
var Montage = require("montage/core/core").Montage,
Component = require("montage/ui/component").Component;
var Button = exports.Button = Montage.create(Component, {
// Button state
_focused: {
value: false
},
_pressed: {
value: false
},
_isToggleButton: {
value: false
},
isToggleButton: {
serializable: true,
enumerable: true,
get: function() {
return this._isToggleButton;
},
set: function(value) {
if (value !== this._isToggleButton) {
this._isToggleButton = value;
this.needsDraw = true;
}
}
},
_value: {
value: false
},
value: {
serializable: true,
enumerable: true,
get: function() {
return this._value;
},
set: function(value) {
if ( (value !== null) && (value !== this._value) ) {
this._value = value;
this.needsDraw = true;
}
}
},
_label: {
value: ""
},
label: {
serializable: true,
enumerable: true,
get: function() {
return this._label;
},
set: function(value) {
if (value !== this._label) {
this._label = value;
this.needsDraw = true;
}
}
},
// TODO - Allow user to specify up, over and down states
_onState: {
value: "on"
},
onState: {
serializable: true,
enumerable: true,
get: function() {
return this._onState;
},
set: function(value) {
if (value !== this._onState) {
this._onState = value;
this.needsDraw = true;
}
}
},
_offState: {
value: "off"
},
offState: {
serializable: true,
enumerable: true,
get: function() {
return this._offState;
},
set: function(value) {
if (value !== this._offState) {
this._offState = value;
this.needsDraw = true;
}
}
},
// Low-level event listeners
handleTouchstart: {
value: function(event) {
// TODO preventingDefault disables the magnifying class
// sadly it also disables double tapping on the button to zoom...
event.preventDefault();
this._acknowledgeIntent();
}
},
handleMousedown: {
value: function(event) {
this._acknowledgeIntent();
}
},
handleTouchend: {
value: function(event) {
this._interpretInteraction(event);
}
},
handleTouchcancel: {
value: function(event) {
console.log("cancel!")
// this._interpretInteraction(event);
}
},
handleMouseup: {
value: function(event) {
this._interpretInteraction(event);
}
},
// Internal state management
_acknowledgeIntent: {
value: function() {
this._pressed = true;
this.element.classList.add("pressed");
}
},
_interpretInteraction: {
value: function(event) {
if (!this._pressed) {
return;
}
this.value = !this.value;
this._pressed = false;
this._dispatchActionEvent();
}
},
_dispatchActionEvent: {
value: function() {
var actionEvent = document.createEvent("CustomEvent");
actionEvent.initCustomEvent("action", true, true);
actionEvent.type = "action";
this.dispatchEvent(actionEvent);
}
},
draw: {
enumerable: false,
value: function() {
if(this.isToggleButton)
{
if(this._value === true)
{
this.element.classList.remove(this.offState);
this.element.classList.add(this.onState);
}
else
{
this.element.classList.remove(this.onState);
this.element.classList.add(this.offState);
}
}
if(this.label && this.label !== "")
{
this.element.textContent = this.label;
}
}
},
prepareForDraw: {
value: function() {
// TODO only install low level event listeners for high level
// events others listen to us for
this.element.addEventListener("touchstart", this);
// TODO listen to mouseup anywhere within the app
document.addEventListener("touchend", this);
document.addEventListener("touchcancel", this);
this.element.addEventListener("mousedown", this);
// TODO listen to mouseup anywhere within the app
document.addEventListener("mouseup", this);
// TODO accept space or enter as a way to trigger action
// if element targeted; balancing demans of multitouch
// with traditional single focus model
document.addEventListener("keydown", this, true);
}
}
});
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