browser.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:6k
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.undo.browser");
- dojo.require("dojo.io.common");
- try {
- if ((!djConfig["preventBackButtonFix"]) && (!dojo.hostenv.post_load_)) {
- document.write("<iframe style='border: 0px; width: 1px; height: 1px; position: absolute; bottom: 0px; right: 0px; visibility: visible;' name='djhistory' id='djhistory' src='" + (djConfig["dojoIframeHistoryUrl"] || dojo.hostenv.getBaseScriptUri() + "iframe_history.html") + "'></iframe>");
- }
- }
- catch (e) {
- }
- if (dojo.render.html.opera) {
- dojo.debug("Opera is not supported with dojo.undo.browser, so back/forward detection will not work.");
- }
- dojo.undo.browser = {initialHref:(!dj_undef("window")) ? window.location.href : "", initialHash:(!dj_undef("window")) ? window.location.hash : "", moveForward:false, historyStack:[], forwardStack:[], historyIframe:null, bookmarkAnchor:null, locationTimer:null, setInitialState:function (args) {
- this.initialState = this._createState(this.initialHref, args, this.initialHash);
- }, addToHistory:function (args) {
- this.forwardStack = [];
- var hash = null;
- var url = null;
- if (!this.historyIframe) {
- if (djConfig["useXDomain"] && !djConfig["dojoIframeHistoryUrl"]) {
- dojo.debug("dojo.undo.browser: When using cross-domain Dojo builds," + " please save iframe_history.html to your domain and set djConfig.dojoIframeHistoryUrl" + " to the path on your domain to iframe_history.html");
- }
- this.historyIframe = window.frames["djhistory"];
- }
- if (!this.bookmarkAnchor) {
- this.bookmarkAnchor = document.createElement("a");
- dojo.body().appendChild(this.bookmarkAnchor);
- this.bookmarkAnchor.style.display = "none";
- }
- if (args["changeUrl"]) {
- hash = "#" + ((args["changeUrl"] !== true) ? args["changeUrl"] : (new Date()).getTime());
- if (this.historyStack.length == 0 && this.initialState.urlHash == hash) {
- this.initialState = this._createState(url, args, hash);
- return;
- } else {
- if (this.historyStack.length > 0 && this.historyStack[this.historyStack.length - 1].urlHash == hash) {
- this.historyStack[this.historyStack.length - 1] = this._createState(url, args, hash);
- return;
- }
- }
- this.changingUrl = true;
- setTimeout("window.location.href = '" + hash + "'; dojo.undo.browser.changingUrl = false;", 1);
- this.bookmarkAnchor.href = hash;
- if (dojo.render.html.ie) {
- url = this._loadIframeHistory();
- var oldCB = args["back"] || args["backButton"] || args["handle"];
- var tcb = function (handleName) {
- if (window.location.hash != "") {
- setTimeout("window.location.href = '" + hash + "';", 1);
- }
- oldCB.apply(this, [handleName]);
- };
- if (args["back"]) {
- args.back = tcb;
- } else {
- if (args["backButton"]) {
- args.backButton = tcb;
- } else {
- if (args["handle"]) {
- args.handle = tcb;
- }
- }
- }
- var oldFW = args["forward"] || args["forwardButton"] || args["handle"];
- var tfw = function (handleName) {
- if (window.location.hash != "") {
- window.location.href = hash;
- }
- if (oldFW) {
- oldFW.apply(this, [handleName]);
- }
- };
- if (args["forward"]) {
- args.forward = tfw;
- } else {
- if (args["forwardButton"]) {
- args.forwardButton = tfw;
- } else {
- if (args["handle"]) {
- args.handle = tfw;
- }
- }
- }
- } else {
- if (dojo.render.html.moz) {
- if (!this.locationTimer) {
- this.locationTimer = setInterval("dojo.undo.browser.checkLocation();", 200);
- }
- }
- }
- } else {
- url = this._loadIframeHistory();
- }
- this.historyStack.push(this._createState(url, args, hash));
- }, checkLocation:function () {
- if (!this.changingUrl) {
- var hsl = this.historyStack.length;
- if ((window.location.hash == this.initialHash || window.location.href == this.initialHref) && (hsl == 1)) {
- this.handleBackButton();
- return;
- }
- if (this.forwardStack.length > 0) {
- if (this.forwardStack[this.forwardStack.length - 1].urlHash == window.location.hash) {
- this.handleForwardButton();
- return;
- }
- }
- if ((hsl >= 2) && (this.historyStack[hsl - 2])) {
- if (this.historyStack[hsl - 2].urlHash == window.location.hash) {
- this.handleBackButton();
- return;
- }
- }
- }
- }, iframeLoaded:function (evt, ifrLoc) {
- if (!dojo.render.html.opera) {
- var query = this._getUrlQuery(ifrLoc.href);
- if (query == null) {
- if (this.historyStack.length == 1) {
- this.handleBackButton();
- }
- return;
- }
- if (this.moveForward) {
- this.moveForward = false;
- return;
- }
- if (this.historyStack.length >= 2 && query == this._getUrlQuery(this.historyStack[this.historyStack.length - 2].url)) {
- this.handleBackButton();
- } else {
- if (this.forwardStack.length > 0 && query == this._getUrlQuery(this.forwardStack[this.forwardStack.length - 1].url)) {
- this.handleForwardButton();
- }
- }
- }
- }, handleBackButton:function () {
- var current = this.historyStack.pop();
- if (!current) {
- return;
- }
- var last = this.historyStack[this.historyStack.length - 1];
- if (!last && this.historyStack.length == 0) {
- last = this.initialState;
- }
- if (last) {
- if (last.kwArgs["back"]) {
- last.kwArgs["back"]();
- } else {
- if (last.kwArgs["backButton"]) {
- last.kwArgs["backButton"]();
- } else {
- if (last.kwArgs["handle"]) {
- last.kwArgs.handle("back");
- }
- }
- }
- }
- this.forwardStack.push(current);
- }, handleForwardButton:function () {
- var last = this.forwardStack.pop();
- if (!last) {
- return;
- }
- if (last.kwArgs["forward"]) {
- last.kwArgs.forward();
- } else {
- if (last.kwArgs["forwardButton"]) {
- last.kwArgs.forwardButton();
- } else {
- if (last.kwArgs["handle"]) {
- last.kwArgs.handle("forward");
- }
- }
- }
- this.historyStack.push(last);
- }, _createState:function (url, args, hash) {
- return {"url":url, "kwArgs":args, "urlHash":hash};
- }, _getUrlQuery:function (url) {
- var segments = url.split("?");
- if (segments.length < 2) {
- return null;
- } else {
- return segments[1];
- }
- }, _loadIframeHistory:function () {
- var url = (djConfig["dojoIframeHistoryUrl"] || dojo.hostenv.getBaseScriptUri() + "iframe_history.html") + "?" + (new Date()).getTime();
- this.moveForward = true;
- dojo.io.setIFrameSrc(this.historyIframe, url, false);
- return url;
- }};