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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> */
/**
@module "montage/ui/bluemoon/progress.reel"
@requires montage/core/core
@requires montage/ui/component
*/
var Montage = require("montage").Montage,
Component = require("ui/component").Component;
/**
@class module:montage/ui/progress.Progress
@extends module:montage/ui/component.Component
*/
exports.Progress = Montage.create(Component,/** @lends module:"montage/ui/bluemoon/progress.reel".Progress# */ {
/**
Description TODO
@private
*/
_barElement: {
enumerable: false,
value: null
},
/**
Description TODO
@private
*/
_value: {
enumerable: false,
value: 0
},
/**
Description TODO
@type {Function}
@default {Number} 0
*/
value: {
get: function() {
return this._value;
},
set: function(val) {
if(val !== this._value) {
this._value = val;
if(this._value > this._maximumValue) {
this._value = this._maximumValue;
}
if(this._value < 0) {
this._value = 0;
}
this.needsDraw = true;
}
}
},
/**
Description TODO
@private
*/
_maximumValue: {
enumerable: false,
value: 100
},
/**
Description TODO
@type {Function}
@default {Number} 100
*/
maximumValue: {
get: function() {
return this._maximumValue;
},
set: function(val) {
if(val !== this._maximumValue) {
this._maximumValue = val;
if(this._maximumValue <= 0) {
this._maximumValue = 1; // Prevent divide by zero errors
}
this.needsDraw = true;
}
}
},
/**
Description TODO
@private
*/
_scrollingChanged: {
enumerable: false,
value: true
},
/**
Description TODO
@private
*/
_scrolling: {
enumerable: false,
value: false
},
/**
Description TODO
@type {Function}
@default {Boolean} false
*/
scrolling: {
get: function() {
return this._scrolling;
},
set: function(value) {
if(this._scrolling !== value) {
this._scrollingChanged = true;
this._scrolling = value;
this.needsDraw = true;
}
}
},
/**
Description TODO
@function
*/
draw: {
enumerable: false,
value: function() {
var ratio = this._value / this._maximumValue;
// constrain to interval [0, 1]
ratio = Math.min(Math.max(ratio, 0), 1);
// map into [0, 100]
var percentage = ratio * 100;
this._barElement.style.width = percentage + '%';
if(this._scrollingChanged) {
if(this._scrolling) {
this._barElement.classList.add("scrolling");
} else {
this._barElement.classList.remove("scrolling");
}
this._scrollingChanged = false;
}
}
}
});
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