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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> */
/*global require, exports*/
var Montage = require("montage").Montage,
Component = require("ui/component").Component,
NativeControl = require("ui/native-control").NativeControl,
PressComposer = require("ui/composer/press-composer").PressComposer;
/**
* The Button input
*/
var Button = exports.Button = Montage.create(NativeControl, {
/**
Description TODO
@private
*/
_preventFocus: {
enumerable: false,
value: false
},
/**
Description TODO
@type {Function}
@default {Boolean} false
*/
preventFocus: {
get: function () {
return this._preventFocus;
},
set: function (value) {
if (value === true) {
this._preventFocus = true;
} else {
this._preventFocus = false;
}
}
},
//TODO we should prefer positive properties like enabled vs disabled, get rid of disabled
enabled: {
dependencies: ["disabled"],
get: function () {
return !this._disabled;
},
set: function (value) {
this.disabled = !value;
}
},
/**
The Montage converted used to convert or format values displayed by this Button instance.
@type {Property}
@default null
*/
converter: {
value: null
},
/**
Stores the node that contains this button's value. Only used for
non-`<input>` elements.
@private
*/
_labelNode: {value:undefined, enumerable: false},
_label: { value: undefined, enumerable: false },
/**
The label for the button.
In an `<input>` element this is the value property. On any other element
(including `<button>`) this is the first child node which is a text node.
If one isn't found it will be created.
@type {Property}
@default {String} element value
*/
label: {
get: function() {
return this._label;
},
set: function(value) {
if (value && value.length > 0 && this.converter) {
try {
value = this.converter.convert(value);
if (this.error) {
this.error = null;
}
} catch(e) {
// unable to convert - maybe error
this.error = e;
}
}
this._label = value;
if (this._isInputElement) {
this._value = value;
}
this.needsDraw = true;
}
},
/**
True when the button is being interacted with, either through mouse click or
touch event.
@private
*/
_active: {
enumerable: false,
value: false
},
/**
Description TODO
@type {Function}
@default {Boolean} false
*/
active: {
get: function() {
return this._active;
},
set: function(value) {
this._active = value;
this.needsDraw = true;
}
},
prepareForActivationEvents: {
value: function() {
var pressComposer = PressComposer.create();
this.addComposer(pressComposer);
pressComposer.addEventListener("pressstart", this, false);
pressComposer.addEventListener("press", this, false);
pressComposer.addEventListener("presscancel", this, false);
}
},
// Handlers
/**
Called when the user starts interacting with the component.
*/
handlePressstart: {
value: function(event) {
this.active = true;
event.preventDefault();
if (!this._preventFocus) {
this._element.focus();
}
}
},
/**
Called when the user has interacted with the button.
*/
handlePress: {
value: function(event) {
this.active = false;
this._dispatchActionEvent();
}
},
/**
Called when all interaction is over.
*/
handlePresscancel: {
value: function(event) {
this.active = false;
}
},
/**
If this is an input element then the label is handled differently.
@private
*/
_isInputElement: {
value: false,
enumerable: false
},
didSetElement: {
value: function() {
var o = NativeControl.didSetElement.call(this);
this._element.classList.add("montage-button");
this._element.setAttribute("aria-role", "button");
this._isInputElement = (this._element.tagName === "INPUT");
// Only take the value from the element if it hasn't been set
// elsewhere (i.e. in the serialization)
if (this._isInputElement) {
// NOTE: This might not be the best way to do this
// With an input element value and label are one and the same
Object.defineProperty(this, "value", {
get: function() {
return this._label;
},
set: function(value) {
this.label = value;
}
});
if (this._label === undefined) {
this._label = this._element.value;
}
} else {
if (!this._element.firstChild) {
this._element.appendChild(document.createTextNode(""));
}
this._labelNode = this._element.firstChild;
if (this._label === undefined) {
this._label = this._labelNode.data;
}
}
this.needsDraw = true;
}
},
/**
Draws the label to the DOM.
@function
*/
_drawLabel: {
enumerable: false,
value: function(value) {
if (this._isInputElement) {
this._element.setAttribute("value", value);
} else {
this._labelNode.data = value;
}
}
},
draw: {
value: function() {
// Call super method
Object.getPrototypeOf(Button).draw.call(this);
if (this._disabled) {
this._element.classList.add("disabled");
} else {
this._element.classList.remove("disabled");
}
this._drawLabel(this.label);
}
}
});
Button.addAttributes({
autofocus: {value: false, dataType: 'boolean'},
disabled: {value: false, dataType: 'boolean'},
form: null,
formaction: null,
formenctype: null,
formmethod: null,
formnovalidate: null,
formtarget: null,
type: {value: 'button'},
name: null,
value: null
});
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