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/* <copyright>
Copyright (c) 2012, Motorola Mobility LLC.
All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of Motorola Mobility LLC nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
</copyright> */
/**
@module "montage/ui/radio-button.reel"
@requires montage/ui/component
@requires montage/ui/check-input
*/
var Montage = require("montage").Montage,
Component = require("ui/component").Component,
CheckInput = require("ui/check-input").CheckInput;
/**
* Wraps the a <input type="radio"> element with binding support for the element's standard attributes.
@class module:"montage/ui/radio-button.reel".RadioButton
@extends module:montage/ui/check-input.CheckInput
*/
var RadioButton = exports.RadioButton = Montage.create(CheckInput, {
_fakeCheck: {
enumerable: false,
value: function() {
var changeEvent;
// NOTE: this may be BAD, modifying the element outside of
// the draw loop, but it's what a click/touch would
// actually have done
if (!this._element.checked) {
this._element.checked = true;
changeEvent = document.createEvent("HTMLEvents");
changeEvent.initEvent("change", true, true);
this._element.dispatchEvent(changeEvent);
}
}
},
_checkedSyncedWithInputField: {
enumerable: false,
value: false
},
_checked: {
enumerable: false,
value: null
},
/**
Specifies if the RadioButton is in its checked state or not.
@type {boolean}
@default false
*/
checked: {
get: function() {
// If we haven't synced with the input field then our value is
// more up to date than the element and so we don't get it from the
// element. If we have synced then the user could have changed
// the focus to another radio button, so we *do* retrieve it from
// the element.
if (this._checkedSyncedWithInputField === true) {
this._checked = this._element.checked;
}
return this._checked;
},
set: function(value, fromInput) {
this._checked = value;
if (fromInput) {
this._valueSyncedWithInputField = true;
} else {
this._valueSyncedWithInputField = false;
this.needsDraw = true;
}
if(this._checked === true) {
if(this.name && this.name !== null) {
// dispatch an event to all other radiobuttons with the same name
var anEvent = document.createEvent("CustomEvent");
anEvent.initCustomEvent("checked", true, true, {
name: this.name
});
RadioButton.dispatchEvent(anEvent);
RadioButton.addEventListener('checked', this);
}
}
},
serializable: true
},
handleChecked:{
value: function(evt) {
// if we receive this event, it means that some other radiobutton with the same name
// has been checked. So, mark this as unchecked.
if(this.name === evt.detail.name) {
this.checked = false;
RadioButton.removeEventListener('checked', this);
}
}
},
draw: {
value: function() {
if (!this._valueSyncedWithInputField) {
this._element.checked = this._checked;
}
// Call super
Object.getPrototypeOf(RadioButton).draw.call(this);
}
}
});
RadioButton.addAttributes(/** @lends module:"montage/ui/radio-button.reel".RadioButton */ {
/**
Specifies whether the radio button should be focused as soon as the page is loaded.
@type {boolean}
@default false
*/
autofocus: {value: false, dataType: 'boolean'},
/**
When true, the radio button is disabled to user input and "disabled" is added to the element's CSS class list, allowing you to style the disabled control.
@type {boolean}
@default false
*/
disabled: {value: false, dataType: 'boolean'},
/**
Specifies if the radio button is checked or not.
@type {boolean}
@default false
*/
checked: {value: false, dataType: 'boolean'},
/**
The value of the id attribute on the form with which to associate the radio button element.
@type string}
@default null
*/
form: null,
/**
The name associated with the radio button's element.
@type {string}
@default null
*/
name: null,
/**
Specifies whether or not the user can edit the radio button.
@type {boolean}
@default false
*/
readonly: {value: false, dataType: 'boolean'},
/**
Advisory information for the element, rendered as the element's tooltip.
@type {string},
@default null
*/
title: null,
/*
"On getting, if the element has a value attribute, it must return that
attribute's value; otherwise, it must return the string "on". On setting,
it must set the element's value attribute to the new value."
http://www.w3.org/TR/html5/common-input-element-attributes.html#dom-input-value-default-on
*/
/**
The value associated with the element.
@type {string}
@default "on"
*/
value: {value: 'on'}
});
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