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Making deferred.js available globally and adding a new http library a…
…lso available globally
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21 changes: 20 additions & 1 deletion
21
ide/main/src/content/deferred.js → ide/main/src/content/utils/deferred.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * Copyright 2014 Samit Badle | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| /** | ||
| * HTTP service for Firefox addons | ||
| * Do not instantiate | ||
| */ | ||
| function HTTP() { | ||
| } | ||
|
|
||
| /** | ||
| * Make a generic http request | ||
| * | ||
| * @param method GET, POST, DELETE, PUT or any other http request | ||
| * @param url | ||
| * @param {string|object} [data] string or object, object is converted to json and sets the Content-Type header | ||
| * @param {Object.<string, string>} [headers] hash with keys containing header names and values containing its value | ||
| * @param {function(string, string, string)} [callback] a callback function that takes response, success, status. If callback is not given, | ||
| * a deferred object is created. If deferred.js is not loaded, an exception will occur. | ||
| * @returns {Deferred} if a deferred has been created | ||
| */ | ||
| HTTP.request = function(method, url, data, headers, callback) { | ||
| var deferred; | ||
| if (!callback) { | ||
| deferred = new Deferred(); | ||
| callback = function(response, success, status) { | ||
| if (success) { | ||
| deferred.resolve(response, success, status); | ||
| } else { | ||
| deferred.reject(response, success, status); | ||
| } | ||
| }; | ||
|
|
||
| } | ||
| var httpRequest = new XMLHttpRequest(); | ||
| //LOG.debug('Executing: ' + method + " " + url); | ||
| httpRequest.open(method, url); | ||
| httpRequest.onreadystatechange = function() { | ||
| try { | ||
| if (httpRequest.readyState === 4) { | ||
| if (httpRequest.status === 200 || (httpRequest.status > 200 && httpRequest.status < 300)) { | ||
| callback(httpRequest.responseText, true, httpRequest.status); | ||
| } else if (httpRequest.status === 500 ) { | ||
| callback(httpRequest.responseText, false, httpRequest.status); | ||
| } else { | ||
| //TODO eliminate alert and signal the failure | ||
| // alert('There was a problem with the request.\nUrl: ' + url + '\nHttp Status: ' + httpRequest.status + "\nResponse: " + httpRequest.responseText); | ||
| LOG.debug('Error: There was a problem with the request.\nUrl: ' + url + '\nHttp Status: ' + httpRequest.status + "\nResponse: " + httpRequest.responseText); | ||
| callback(null, false, httpRequest.status); | ||
| } | ||
| } | ||
| } catch(e) { | ||
| //TODO eliminate alert and signal the failure, typically when callback is not given and Deferred is not loaded | ||
| alert('Caught Exception in HTTP.request: ' + e); | ||
| throw e; | ||
| } | ||
| }; | ||
| //httpRequest.channel.loadFlags |= Components.interfaces.nsIRequest.LOAD_BYPASS_CACHE; | ||
| if (data && typeof data !== 'string') { | ||
| data = JSON.stringify(data); | ||
| //do this before you set custom headers, so that user supplied headers will overwrite this | ||
| httpRequest.setRequestHeader('Content-Type', 'application/json; charset=utf-8'); | ||
| } | ||
| if (headers) { | ||
| for (var header in headers) { | ||
| httpRequest.setRequestHeader(header, headers[header] + ''); | ||
| } | ||
| } | ||
| if (data) { | ||
| httpRequest.send(data); | ||
| } else { | ||
| httpRequest.send(); | ||
| } | ||
| return deferred; | ||
| }; | ||
|
|
||
| /** | ||
| * Shortcut method to create HTTP POST requests. See HTTP.request() for more details. | ||
| * | ||
| * @param url | ||
| * @param {string|object} [data] string or object, object is converted to json and sets the Content-Type header | ||
| * @param {Object.<string, string>} [headers] hash with keys containing header names and values containing its value | ||
| * @param {function(string, string, string)} [callback] a callback function that takes response, success, status. If callback is not given, | ||
| * a deferred object is created. If deferred.js is not loaded, an exception occurs. | ||
| * @returns {Deferred} if a deferred has been created | ||
| */ | ||
| HTTP.post = function(url, data, headers, callback) { | ||
| return this.request('POST', url, data, headers, callback); | ||
| }; | ||
|
|
||
| /** | ||
| * Shortcut method to create HTTP GET requests. See HTTP.request() for more details. | ||
| * | ||
| * @param url | ||
| * @param {Object.<string, string>} [headers] hash with keys containing header names and values containing its value | ||
| * @param {function(string, string, string)} [callback] a callback function that takes response, success, status. If callback is not given, | ||
| * a deferred object is created. If deferred.js is not loaded, an exception occurs. | ||
| * @returns {Deferred} if a deferred has been created | ||
| */ | ||
| HTTP.get = function (url, headers, callback) { | ||
| return this.request('GET', url, null, headers, callback); | ||
| }; | ||
|
|
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