110 lines
2.7 KiB
JavaScript
110 lines
2.7 KiB
JavaScript
/**
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* @fileOverview Runtime管理器，负责Runtime的选择, 连接
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*/
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define([
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'../base',
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'../mediator'
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], function( Base, Mediator ) {
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var $ = Base.$,
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factories = {},
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// 获取对象的第一个key
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getFirstKey = function( obj ) {
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for ( var key in obj ) {
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if ( obj.hasOwnProperty( key ) ) {
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return key;
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}
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}
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return null;
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};
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// 接口类。
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function Runtime( options ) {
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this.options = $.extend({
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container: document.body
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}, options );
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this.uid = Base.guid('rt_');
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}
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$.extend( Runtime.prototype, {
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getContainer: function() {
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var opts = this.options,
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parent, container;
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if ( this._container ) {
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return this._container;
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}
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parent = $( opts.container || document.body );
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container = $( document.createElement('div') );
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container.attr( 'id', 'rt_' + this.uid );
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container.css({
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position: 'absolute',
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top: '0px',
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left: '0px',
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width: '1px',
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height: '1px',
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overflow: 'hidden'
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});
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parent.append( container );
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parent.addClass('webuploader-container');
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this._container = container;
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this._parent = parent;
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return container;
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},
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init: Base.noop,
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exec: Base.noop,
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destroy: function() {
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this._container && this._container.remove();
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this._parent && this._parent.removeClass('webuploader-container');
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this.off();
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}
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});
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Runtime.orders = 'html5,flash';
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/**
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* 添加Runtime实现。
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* @param {String} type 类型
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* @param {Runtime} factory 具体Runtime实现。
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*/
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Runtime.addRuntime = function( type, factory ) {
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factories[ type ] = factory;
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};
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Runtime.hasRuntime = function( type ) {
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return !!(type ? factories[ type ] : getFirstKey( factories ));
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};
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Runtime.create = function( opts, orders ) {
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var type, runtime;
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orders = orders || Runtime.orders;
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$.each( orders.split( /\s*,\s*/g ), function() {
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if ( factories[ this ] ) {
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type = this;
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return false;
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}
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});
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type = type || getFirstKey( factories );
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if ( !type ) {
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throw new Error('Runtime Error');
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}
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runtime = new factories[ type ]( opts );
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return runtime;
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};
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Mediator.installTo( Runtime.prototype );
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return Runtime;
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});
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