ScriptSrcIO.js
资源名称:oa.rar [点击查看]
上传用户:kimgenplus
上传日期:2016-06-05
资源大小:20877k
文件大小:10k
源码类别:
OA系统
开发平台:
Java
- /*
- Copyright (c) 2004-2006, The Dojo Foundation
- All Rights Reserved.
- Licensed under the Academic Free License version 2.1 or above OR the
- modified BSD license. For more information on Dojo licensing, see:
- http://dojotoolkit.org/community/licensing.shtml
- */
- dojo.provide("dojo.io.ScriptSrcIO");
- dojo.require("dojo.io.BrowserIO");
- dojo.require("dojo.undo.browser");
- dojo.io.ScriptSrcTransport = new function () {
- this.preventCache = false;
- this.maxUrlLength = 1000;
- this.inFlightTimer = null;
- this.DsrStatusCodes = {Continue:100, Ok:200, Error:500};
- this.startWatchingInFlight = function () {
- if (!this.inFlightTimer) {
- this.inFlightTimer = setInterval("dojo.io.ScriptSrcTransport.watchInFlight();", 100);
- }
- };
- this.watchInFlight = function () {
- var totalCount = 0;
- var doneCount = 0;
- for (var param in this._state) {
- totalCount++;
- var currentState = this._state[param];
- if (currentState.isDone) {
- doneCount++;
- delete this._state[param];
- } else {
- if (!currentState.isFinishing) {
- var listener = currentState.kwArgs;
- try {
- if (currentState.checkString && eval("typeof(" + currentState.checkString + ") != 'undefined'")) {
- currentState.isFinishing = true;
- this._finish(currentState, "load");
- doneCount++;
- delete this._state[param];
- } else {
- if (listener.timeoutSeconds && listener.timeout) {
- if (currentState.startTime + (listener.timeoutSeconds * 1000) < (new Date()).getTime()) {
- currentState.isFinishing = true;
- this._finish(currentState, "timeout");
- doneCount++;
- delete this._state[param];
- }
- } else {
- if (!listener.timeoutSeconds) {
- doneCount++;
- }
- }
- }
- }
- catch (e) {
- currentState.isFinishing = true;
- this._finish(currentState, "error", {status:this.DsrStatusCodes.Error, response:e});
- }
- }
- }
- }
- if (doneCount >= totalCount) {
- clearInterval(this.inFlightTimer);
- this.inFlightTimer = null;
- }
- };
- this.canHandle = function (kwArgs) {
- return dojo.lang.inArray(["text/javascript", "text/json", "application/json"], (kwArgs["mimetype"].toLowerCase())) && (kwArgs["method"].toLowerCase() == "get") && !(kwArgs["formNode"] && dojo.io.formHasFile(kwArgs["formNode"])) && (!kwArgs["sync"] || kwArgs["sync"] == false) && !kwArgs["file"] && !kwArgs["multipart"];
- };
- this.removeScripts = function () {
- var scripts = document.getElementsByTagName("script");
- for (var i = 0; scripts && i < scripts.length; i++) {
- var scriptTag = scripts[i];
- if (scriptTag.className == "ScriptSrcTransport") {
- var parent = scriptTag.parentNode;
- parent.removeChild(scriptTag);
- i--;
- }
- }
- };
- this.bind = function (kwArgs) {
- var url = kwArgs.url;
- var query = "";
- if (kwArgs["formNode"]) {
- var ta = kwArgs.formNode.getAttribute("action");
- if ((ta) && (!kwArgs["url"])) {
- url = ta;
- }
- var tp = kwArgs.formNode.getAttribute("method");
- if ((tp) && (!kwArgs["method"])) {
- kwArgs.method = tp;
- }
- query += dojo.io.encodeForm(kwArgs.formNode, kwArgs.encoding, kwArgs["formFilter"]);
- }
- if (url.indexOf("#") > -1) {
- dojo.debug("Warning: dojo.io.bind: stripping hash values from url:", url);
- url = url.split("#")[0];
- }
- var urlParts = url.split("?");
- if (urlParts && urlParts.length == 2) {
- url = urlParts[0];
- query += (query ? "&" : "") + urlParts[1];
- }
- if (kwArgs["backButton"] || kwArgs["back"] || kwArgs["changeUrl"]) {
- dojo.undo.browser.addToHistory(kwArgs);
- }
- var id = kwArgs["apiId"] ? kwArgs["apiId"] : "id" + this._counter++;
- var content = kwArgs["content"];
- var jsonpName = kwArgs.jsonParamName;
- if (kwArgs.sendTransport || jsonpName) {
- if (!content) {
- content = {};
- }
- if (kwArgs.sendTransport) {
- content["dojo.transport"] = "scriptsrc";
- }
- if (jsonpName) {
- content[jsonpName] = "dojo.io.ScriptSrcTransport._state." + id + ".jsonpCall";
- }
- }
- if (kwArgs.postContent) {
- query = kwArgs.postContent;
- } else {
- if (content) {
- query += ((query) ? "&" : "") + dojo.io.argsFromMap(content, kwArgs.encoding, jsonpName);
- }
- }
- if (kwArgs["apiId"]) {
- kwArgs["useRequestId"] = true;
- }
- var state = {"id":id, "idParam":"_dsrid=" + id, "url":url, "query":query, "kwArgs":kwArgs, "startTime":(new Date()).getTime(), "isFinishing":false};
- if (!url) {
- this._finish(state, "error", {status:this.DsrStatusCodes.Error, statusText:"url.none"});
- return;
- }
- if (content && content[jsonpName]) {
- state.jsonp = content[jsonpName];
- state.jsonpCall = function (data) {
- if (data["Error"] || data["error"]) {
- if (dojo["json"] && dojo["json"]["serialize"]) {
- dojo.debug(dojo.json.serialize(data));
- }
- dojo.io.ScriptSrcTransport._finish(this, "error", data);
- } else {
- dojo.io.ScriptSrcTransport._finish(this, "load", data);
- }
- };
- }
- if (kwArgs["useRequestId"] || kwArgs["checkString"] || state["jsonp"]) {
- this._state[id] = state;
- }
- if (kwArgs["checkString"]) {
- state.checkString = kwArgs["checkString"];
- }
- state.constantParams = (kwArgs["constantParams"] == null ? "" : kwArgs["constantParams"]);
- if (kwArgs["preventCache"] || (this.preventCache == true && kwArgs["preventCache"] != false)) {
- state.nocacheParam = "dojo.preventCache=" + new Date().valueOf();
- } else {
- state.nocacheParam = "";
- }
- var urlLength = state.url.length + state.query.length + state.constantParams.length + state.nocacheParam.length + this._extraPaddingLength;
- if (kwArgs["useRequestId"]) {
- urlLength += state.idParam.length;
- }
- if (!kwArgs["checkString"] && kwArgs["useRequestId"] && !state["jsonp"] && !kwArgs["forceSingleRequest"] && urlLength > this.maxUrlLength) {
- if (url > this.maxUrlLength) {
- this._finish(state, "error", {status:this.DsrStatusCodes.Error, statusText:"url.tooBig"});
- return;
- } else {
- this._multiAttach(state, 1);
- }
- } else {
- var queryParams = [state.constantParams, state.nocacheParam, state.query];
- if (kwArgs["useRequestId"] && !state["jsonp"]) {
- queryParams.unshift(state.idParam);
- }
- var finalUrl = this._buildUrl(state.url, queryParams);
- state.finalUrl = finalUrl;
- this._attach(state.id, finalUrl);
- }
- this.startWatchingInFlight();
- };
- this._counter = 1;
- this._state = {};
- this._extraPaddingLength = 16;
- this._buildUrl = function (url, nameValueArray) {
- var finalUrl = url;
- var joiner = "?";
- for (var i = 0; i < nameValueArray.length; i++) {
- if (nameValueArray[i]) {
- finalUrl += joiner + nameValueArray[i];
- joiner = "&";
- }
- }
- return finalUrl;
- };
- this._attach = function (id, url) {
- var element = document.createElement("script");
- element.type = "text/javascript";
- element.src = url;
- element.id = id;
- element.className = "ScriptSrcTransport";
- document.getElementsByTagName("head")[0].appendChild(element);
- };
- this._multiAttach = function (state, part) {
- if (state.query == null) {
- this._finish(state, "error", {status:this.DsrStatusCodes.Error, statusText:"query.null"});
- return;
- }
- if (!state.constantParams) {
- state.constantParams = "";
- }
- var queryMax = this.maxUrlLength - state.idParam.length - state.constantParams.length - state.url.length - state.nocacheParam.length - this._extraPaddingLength;
- var isDone = state.query.length < queryMax;
- var currentQuery;
- if (isDone) {
- currentQuery = state.query;
- state.query = null;
- } else {
- var ampEnd = state.query.lastIndexOf("&", queryMax - 1);
- var eqEnd = state.query.lastIndexOf("=", queryMax - 1);
- if (ampEnd > eqEnd || eqEnd == queryMax - 1) {
- currentQuery = state.query.substring(0, ampEnd);
- state.query = state.query.substring(ampEnd + 1, state.query.length);
- } else {
- currentQuery = state.query.substring(0, queryMax);
- var queryName = currentQuery.substring((ampEnd == -1 ? 0 : ampEnd + 1), eqEnd);
- state.query = queryName + "=" + state.query.substring(queryMax, state.query.length);
- }
- }
- var queryParams = [currentQuery, state.idParam, state.constantParams, state.nocacheParam];
- if (!isDone) {
- queryParams.push("_part=" + part);
- }
- var url = this._buildUrl(state.url, queryParams);
- this._attach(state.id + "_" + part, url);
- };
- this._finish = function (state, callback, event) {
- if (callback != "partOk" && !state.kwArgs[callback] && !state.kwArgs["handle"]) {
- if (callback == "error") {
- state.isDone = true;
- throw event;
- }
- } else {
- switch (callback) {
- case "load":
- var response = event ? event.response : null;
- if (!response) {
- response = event;
- }
- state.kwArgs[(typeof state.kwArgs.load == "function") ? "load" : "handle"]("load", response, event, state.kwArgs);
- state.isDone = true;
- break;
- case "partOk":
- var part = parseInt(event.response.part, 10) + 1;
- if (event.response.constantParams) {
- state.constantParams = event.response.constantParams;
- }
- this._multiAttach(state, part);
- state.isDone = false;
- break;
- case "error":
- state.kwArgs[(typeof state.kwArgs.error == "function") ? "error" : "handle"]("error", event.response, event, state.kwArgs);
- state.isDone = true;
- break;
- default:
- state.kwArgs[(typeof state.kwArgs[callback] == "function") ? callback : "handle"](callback, event, event, state.kwArgs);
- state.isDone = true;
- }
- }
- };
- dojo.io.transports.addTransport("ScriptSrcTransport");
- };
- window.onscriptload = function (event) {
- var state = null;
- var transport = dojo.io.ScriptSrcTransport;
- if (transport._state[event.id]) {
- state = transport._state[event.id];
- } else {
- var tempState;
- for (var param in transport._state) {
- tempState = transport._state[param];
- if (tempState.finalUrl && tempState.finalUrl == event.id) {
- state = tempState;
- break;
- }
- }
- if (state == null) {
- var scripts = document.getElementsByTagName("script");
- for (var i = 0; scripts && i < scripts.length; i++) {
- var scriptTag = scripts[i];
- if (scriptTag.getAttribute("class") == "ScriptSrcTransport" && scriptTag.src == event.id) {
- state = transport._state[scriptTag.id];
- break;
- }
- }
- }
- if (state == null) {
- throw "No matching state for onscriptload event.id: " + event.id;
- }
- }
- var callbackName = "error";
- switch (event.status) {
- case dojo.io.ScriptSrcTransport.DsrStatusCodes.Continue:
- callbackName = "partOk";
- break;
- case dojo.io.ScriptSrcTransport.DsrStatusCodes.Ok:
- callbackName = "load";
- break;
- }
- transport._finish(state, callbackName, event);
- };