diff options
Diffstat (limited to 'includes/js/dojox/off/files.js')
| -rw-r--r-- | includes/js/dojox/off/files.js | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/includes/js/dojox/off/files.js b/includes/js/dojox/off/files.js deleted file mode 100644 index 6c19ea0..0000000 --- a/includes/js/dojox/off/files.js +++ /dev/null @@ -1,454 +0,0 @@ -if(!dojo._hasResource["dojox.off.files"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. -dojo._hasResource["dojox.off.files"] = true; -dojo.provide("dojox.off.files"); - -// Author: Brad Neuberg, bkn3@columbia.edu, http://codinginparadise.org - -// summary: -// Helps maintain resources that should be -// available offline, such as CSS files. -// description: -// dojox.off.files makes it easy to indicate -// what resources should be available offline, -// such as CSS files, JavaScript, HTML, etc. -dojox.off.files = { - // versionURL: String - // An optional file, that if present, records the version - // of our bundle of files to make available offline. If this - // file is present, and we are not currently debugging, - // then we only refresh our offline files if the version has - // changed. - versionURL: "version.js", - - // listOfURLs: Array - // For advanced usage; most developers can ignore this. - // Our list of URLs that will be cached and made available - // offline. - listOfURLs: [], - - // refreshing: boolean - // For advanced usage; most developers can ignore this. - // Whether we are currently in the middle - // of refreshing our list of offline files. - refreshing: false, - - _cancelID: null, - - _error: false, - _errorMessages: [], - _currentFileIndex: 0, - _store: null, - _doSlurp: false, - - slurp: function(){ - // summary: - // Autoscans the page to find all resources to - // cache. This includes scripts, images, CSS, and hyperlinks - // to pages that are in the same scheme/port/host as this - // page. We also scan the embedded CSS of any stylesheets - // to find @import statements and url()'s. - // You should call this method from the top-level, outside of - // any functions and before the page loads: - // - // <script> - // dojo.require("dojox.sql"); - // dojo.require("dojox.off"); - // dojo.require("dojox.off.ui"); - // dojo.require("dojox.off.sync"); - // - // // configure how we should work offline - // - // // set our application name - // dojox.off.ui.appName = "Moxie"; - // - // // automatically "slurp" the page and - // // capture the resources we need offline - // dojox.off.files.slurp(); - // - // // tell Dojo Offline we are ready for it to initialize itself now - // // that we have finished configuring it for our application - // dojox.off.initialize(); - // </script> - // - // Note that inline styles on elements are not handled (i.e. - // if you somehow have an inline style that uses a URL); - // object and embed tags are not scanned since their format - // differs based on type; and elements created by JavaScript - // after page load are not found. For these you must manually - // add them with a dojox.off.files.cache() method call. - - // just schedule the slurp once the page is loaded and - // Dojo Offline is ready to slurp; dojox.off will call - // our _slurp() method before indicating it is finished - // loading - this._doSlurp = true; - }, - - cache: function(urlOrList){ /* void */ - // summary: - // Caches a file or list of files to be available offline. This - // can either be a full URL, such as http://foobar.com/index.html, - // or a relative URL, such as ../index.html. This URL is not - // actually cached until dojox.off.sync.synchronize() is called. - // urlOrList: String or Array[] - // A URL of a file to cache or an Array of Strings of files to - // cache - - //console.debug("dojox.off.files.cache, urlOrList="+urlOrList); - - if(dojo.isString(urlOrList)){ - var url = this._trimAnchor(urlOrList+""); - if(!this.isAvailable(url)){ - this.listOfURLs.push(url); - } - }else if(urlOrList instanceof dojo._Url){ - var url = this._trimAnchor(urlOrList.uri); - if(!this.isAvailable(url)){ - this.listOfURLs.push(url); - } - }else{ - dojo.forEach(urlOrList, function(url){ - url = this._trimAnchor(url); - if(!this.isAvailable(url)){ - this.listOfURLs.push(url); - } - }, this); - } - }, - - printURLs: function(){ - // summary: - // A helper function that will dump and print out - // all of the URLs that are cached for offline - // availability. This can help with debugging if you - // are trying to make sure that all of your URLs are - // available offline - console.debug("The following URLs are cached for offline use:"); - dojo.forEach(this.listOfURLs, function(i){ - console.debug(i); - }); - }, - - remove: function(url){ /* void */ - // summary: - // Removes a URL from the list of files to cache. - // description: - // Removes a URL from the list of URLs to cache. Note that this - // does not actually remove the file from the offline cache; - // instead, it just prevents us from refreshing this file at a - // later time, so that it will naturally time out and be removed - // from the offline cache - // url: String - // The URL to remove - for(var i = 0; i < this.listOfURLs.length; i++){ - if(this.listOfURLs[i] == url){ - this.listOfURLs = this.listOfURLs.splice(i, 1); - break; - } - } - }, - - isAvailable: function(url){ /* boolean */ - // summary: - // Determines whether the given resource is available offline. - // url: String - // The URL to check - for(var i = 0; i < this.listOfURLs.length; i++){ - if(this.listOfURLs[i] == url){ - return true; - } - } - - return false; - }, - - refresh: function(callback){ /* void */ - //console.debug("dojox.off.files.refresh"); - // summary: - // For advanced usage; most developers can ignore this. - // Refreshes our list of offline resources, - // making them available offline. - // callback: Function - // A callback that receives two arguments: whether an error - // occurred, which is a boolean; and an array of error message strings - // with details on errors encountered. If no error occured then message is - // empty array with length 0. - try{ - if(dojo.config.isDebug){ - this.printURLs(); - } - - this.refreshing = true; - - if(this.versionURL){ - this._getVersionInfo(function(oldVersion, newVersion, justDebugged){ - //console.warn("getVersionInfo, oldVersion="+oldVersion+", newVersion="+newVersion - // + ", justDebugged="+justDebugged+", isDebug="+dojo.config.isDebug); - if(dojo.config.isDebug || !newVersion || justDebugged - || !oldVersion || oldVersion != newVersion){ - console.warn("Refreshing offline file list"); - this._doRefresh(callback, newVersion); - }else{ - console.warn("No need to refresh offline file list"); - callback(false, []); - } - }); - }else{ - console.warn("Refreshing offline file list"); - this._doRefresh(callback); - } - }catch(e){ - this.refreshing = false; - - // can't refresh files -- core operation -- - // fail fast - dojox.off.coreOpFailed = true; - dojox.off.enabled = false; - dojox.off.onFrameworkEvent("coreOperationFailed"); - } - }, - - abortRefresh: function(){ - // summary: - // For advanced usage; most developers can ignore this. - // Aborts and cancels a refresh. - if(!this.refreshing){ - return; - } - - this._store.abortCapture(this._cancelID); - this.refreshing = false; - }, - - _slurp: function(){ - if(!this._doSlurp){ - return; - } - - var handleUrl = dojo.hitch(this, function(url){ - if(this._sameLocation(url)){ - this.cache(url); - } - }); - - handleUrl(window.location.href); - - dojo.query("script").forEach(function(i){ - try{ - handleUrl(i.getAttribute("src")); - }catch(exp){ - //console.debug("dojox.off.files.slurp 'script' error: " - // + exp.message||exp); - } - }); - - dojo.query("link").forEach(function(i){ - try{ - if(!i.getAttribute("rel") - || i.getAttribute("rel").toLowerCase() != "stylesheet"){ - return; - } - - handleUrl(i.getAttribute("href")); - }catch(exp){ - //console.debug("dojox.off.files.slurp 'link' error: " - // + exp.message||exp); - } - }); - - dojo.query("img").forEach(function(i){ - try{ - handleUrl(i.getAttribute("src")); - }catch(exp){ - //console.debug("dojox.off.files.slurp 'img' error: " - // + exp.message||exp); - } - }); - - dojo.query("a").forEach(function(i){ - try{ - handleUrl(i.getAttribute("href")); - }catch(exp){ - //console.debug("dojox.off.files.slurp 'a' error: " - // + exp.message||exp); - } - }); - - // FIXME: handle 'object' and 'embed' tag - - // parse our style sheets for inline URLs and imports - dojo.forEach(document.styleSheets, function(sheet){ - try{ - if(sheet.cssRules){ // Firefox - dojo.forEach(sheet.cssRules, function(rule){ - var text = rule.cssText; - if(text){ - var matches = text.match(/url\(\s*([^\) ]*)\s*\)/i); - if(!matches){ - return; - } - - for(var i = 1; i < matches.length; i++){ - handleUrl(matches[i]) - } - } - }); - }else if(sheet.cssText){ // IE - var matches; - var text = sheet.cssText.toString(); - // unfortunately, using RegExp.exec seems to be flakey - // for looping across multiple lines on IE using the - // global flag, so we have to simulate it - var lines = text.split(/\f|\r|\n/); - for(var i = 0; i < lines.length; i++){ - matches = lines[i].match(/url\(\s*([^\) ]*)\s*\)/i); - if(matches && matches.length){ - handleUrl(matches[1]); - } - } - } - }catch(exp){ - //console.debug("dojox.off.files.slurp stylesheet parse error: " - // + exp.message||exp); - } - }); - - //this.printURLs(); - }, - - _sameLocation: function(url){ - if(!url){ return false; } - - // filter out anchors - if(url.length && url.charAt(0) == "#"){ - return false; - } - - // FIXME: dojo._Url should be made public; - // it's functionality is very useful for - // parsing URLs correctly, which is hard to - // do right - url = new dojo._Url(url); - - // totally relative -- ../../someFile.html - if(!url.scheme && !url.port && !url.host){ - return true; - } - - // scheme relative with port specified -- brad.com:8080 - if(!url.scheme && url.host && url.port - && window.location.hostname == url.host - && window.location.port == url.port){ - return true; - } - - // scheme relative with no-port specified -- brad.com - if(!url.scheme && url.host && !url.port - && window.location.hostname == url.host - && window.location.port == 80){ - return true; - } - - // else we have everything - return window.location.protocol == (url.scheme + ":") - && window.location.hostname == url.host - && (window.location.port == url.port || !window.location.port && !url.port); - }, - - _trimAnchor: function(url){ - return url.replace(/\#.*$/, ""); - }, - - _doRefresh: function(callback, newVersion){ - // get our local server - var localServer; - try{ - localServer = google.gears.factory.create("beta.localserver", "1.0"); - }catch(exp){ - dojo.setObject("google.gears.denied", true); - dojox.off.onFrameworkEvent("coreOperationFailed"); - throw "Google Gears must be allowed to run"; - } - - var storeName = "dot_store_" - + window.location.href.replace(/[^0-9A-Za-z_]/g, "_"); - - // clip at 64 characters, the max length of a resource store name - if(storeName.length >= 64){ - storeName = storeName.substring(0, 63); - } - - // refresh everything by simply removing - // any older stores - localServer.removeStore(storeName); - - // open/create the resource store - localServer.openStore(storeName); - var store = localServer.createStore(storeName); - this._store = store; - - // add our list of files to capture - var self = this; - this._currentFileIndex = 0; - this._cancelID = store.capture(this.listOfURLs, function(url, success, captureId){ - //console.debug("store.capture, url="+url+", success="+success); - if(!success && self.refreshing){ - self._cancelID = null; - self.refreshing = false; - var errorMsgs = []; - errorMsgs.push("Unable to capture: " + url); - callback(true, errorMsgs); - return; - }else if(success){ - self._currentFileIndex++; - } - - if(success && self._currentFileIndex >= self.listOfURLs.length){ - self._cancelID = null; - self.refreshing = false; - if(newVersion){ - dojox.storage.put("oldVersion", newVersion, null, - dojox.off.STORAGE_NAMESPACE); - } - dojox.storage.put("justDebugged", dojo.config.isDebug, null, - dojox.off.STORAGE_NAMESPACE); - callback(false, []); - } - }); - }, - - _getVersionInfo: function(callback){ - var justDebugged = dojox.storage.get("justDebugged", - dojox.off.STORAGE_NAMESPACE); - var oldVersion = dojox.storage.get("oldVersion", - dojox.off.STORAGE_NAMESPACE); - var newVersion = null; - - callback = dojo.hitch(this, callback); - - dojo.xhrGet({ - url: this.versionURL + "?browserbust=" + new Date().getTime(), - timeout: 5 * 1000, - handleAs: "javascript", - error: function(err){ - //console.warn("dojox.off.files._getVersionInfo, err=",err); - dojox.storage.remove("oldVersion", dojox.off.STORAGE_NAMESPACE); - dojox.storage.remove("justDebugged", dojox.off.STORAGE_NAMESPACE); - callback(oldVersion, newVersion, justDebugged); - }, - load: function(data){ - //console.warn("dojox.off.files._getVersionInfo, load=",data); - - // some servers incorrectly return 404's - // as a real page - if(data){ - newVersion = data; - } - - callback(oldVersion, newVersion, justDebugged); - } - }); - } -} - -} |