dragonbones-runtime
Version:
the tools to build dragonbones file for diffrent framework
262 lines (232 loc) • 8.97 kB
text/typescript
//////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014-present, Egret Technology.
// 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 the Egret 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 EGRET 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 EGRET AND 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.
//
//////////////////////////////////////////////////////////////////////////////////////
namespace egret.web {
/**
* @private
*/
export class WebHttpRequest extends EventDispatcher implements HttpRequest {
/**
* @private
*/
public constructor() {
super();
}
/**
* @private
*/
private _xhr:XMLHttpRequest;
/**
* @private
* 本次请求返回的数据，数据类型根据responseType设置的值确定。
*/
public get response():any {
if (!this._xhr) {
return null;
}
if (this._xhr.response != undefined) {
return this._xhr.response;
}
if (this._responseType == "text") {
return this._xhr.responseText;
}
if (this._responseType == "arraybuffer" && /msie 9.0/i.test(navigator.userAgent)){
let w:any = window;
return w.convertResponseBodyToText(this._xhr["responseBody"]);
}
if (this._responseType == "document") {
return this._xhr.responseXML;
}
/*if (this._xhr.responseXML) {
return this._xhr.responseXML;
}
if (this._xhr.responseText != undefined) {
return this._xhr.responseText;
}*/
return null;
}
/**
* @private
*/
private _responseType:"" | "arraybuffer" | "blob" | "document" | "json" | "text";
/**
* @private
* 设置返回的数据格式，请使用 HttpResponseType 里定义的枚举值。设置非法的值或不设置，都将使用HttpResponseType.TEXT。
*/
public get responseType():"" | "arraybuffer" | "blob" | "document" | "json" | "text" {
return this._responseType;
}
public set responseType(value:"" | "arraybuffer" | "blob" | "document" | "json" | "text") {
this._responseType = value;
}
/**
* @private
*/
private _withCredentials:boolean;
/**
* @private
* 表明在进行跨站(cross-site)的访问控制(Access-Control)请求时，是否使用认证信息(例如cookie或授权的header)。 默认为 false。(这个标志不会影响同站的请求)
*/
public get withCredentials():boolean {
return this._withCredentials;
}
public set withCredentials(value:boolean) {
this._withCredentials = value;
}
/**
* @private
*/
private _url:string = "";
private _method:string = "";
/**
* @private
*
* @returns
*/
private getXHR():any {
if (window["XMLHttpRequest"]) {
return new window["XMLHttpRequest"]();
} else {
return new ActiveXObject("MSXML2.XMLHTTP");
}
}
/**
* @private
* 初始化一个请求.注意，若在已经发出请求的对象上调用此方法，相当于立即调用abort().
* @param url 该请求所要访问的URL该请求所要访问的URL
* @param method 请求所使用的HTTP方法， 请使用 HttpMethod 定义的枚举值.
*/
public open(url:string, method:string = "GET"):void {
this._url = url;
this._method = method;
if (this._xhr) {
this._xhr.abort();
this._xhr = null;
}
this._xhr = this.getXHR();//new XMLHttpRequest();
this._xhr.onreadystatechange = this.onReadyStateChange.bind(this);
this._xhr.onprogress = this.updateProgress.bind(this);
this._xhr.open(this._method, this._url, true);
}
/**
* @private
* 发送请求.
* @param data 需要发送的数据
*/
public send(data?:any):void {
if (this._responseType != null) {
this._xhr.responseType = this._responseType;
}
if (this._withCredentials != null) {
this._xhr.withCredentials = this._withCredentials;
}
if (this.headerObj) {
for(let key in this.headerObj) {
this._xhr.setRequestHeader(key, this.headerObj[key]);
}
}
this._xhr.send(data);
}
/**
* @private
* 如果请求已经被发送,则立刻中止请求.
*/
public abort():void {
if (this._xhr) {
this._xhr.abort();
}
}
/**
* @private
* 返回所有响应头信息(响应头名和值), 如果响应头还没接受,则返回"".
*/
public getAllResponseHeaders():string {
if (!this._xhr) {
return null;
}
let result = this._xhr.getAllResponseHeaders();
return result ? result : "";
}
private headerObj:any;
/**
* @private
* 给指定的HTTP请求头赋值.在这之前,您必须确认已经调用 open() 方法打开了一个url.
* @param header 将要被赋值的请求头名称.
* @param value 给指定的请求头赋的值.
*/
public setRequestHeader(header:string, value:string):void {
if(!this.headerObj) {
this.headerObj = {};
}
this.headerObj[header] = value;
}
/**
* @private
* 返回指定的响应头的值, 如果响应头还没被接受,或该响应头不存在,则返回"".
* @param header 要返回的响应头名称
*/
public getResponseHeader(header:string):string {
if (!this._xhr) {
return null;
}
let result = this._xhr.getResponseHeader(header);
return result ? result : "";
}
/**
* @private
*/
private onReadyStateChange():void {
let xhr = this._xhr;
if (xhr.readyState == 4) {// 4 = "loaded"
let ioError = (xhr.status >= 400 || xhr.status == 0);
let url = this._url;
let self = this;
window.setTimeout(function ():void {
if (ioError) {//请求错误
if (DEBUG && !self.hasEventListener(IOErrorEvent.IO_ERROR)) {
$error(1011, url);
}
self.dispatchEventWith(IOErrorEvent.IO_ERROR);
}
else {
self.dispatchEventWith(Event.COMPLETE);
}
}, 0)
}
}
/**
* @private
*/
private updateProgress(event):void {
if (event.lengthComputable) {
ProgressEvent.dispatchProgressEvent(this, ProgressEvent.PROGRESS, event.loaded, event.total);
}
}
}
HttpRequest = WebHttpRequest;
}