Merge pull request #343 from saghul/ds-options-cleanup

cleanup: Make desktop sharing options consistent and drop deprecated …

doc/API.md

 *  ```JitsiMeetJS.init(options)``` - this method initialized Jitsi Meet API.
 The ```options``` parameter is JS object with the following properties:
     1. useIPv6 - boolean property
-    2. desktopSharingChromeMethod - Desktop sharing method. Can be set to 'ext', 'webrtc' or false to disable.
-    3. desktopSharingChromeExtId - The ID of the jidesha extension for Chrome or Firefox. Example: 'mbocklcggfhnbahlnepmldehdhpjfcjp'
-    desktopSharingChromeSources - Array of strings with the media sources to use when using screen sharing with the Chrome extension. Example: ['screen', 'window']
-    4. desktopSharingChromeMinExtVersion - Required version of Chrome extension. Example: '0.1'
-    5. desktopSharingFirefoxExtId - The ID of the jidesha extension for Firefox. If null, we assume that no extension is required.
-    6. desktopSharingFirefoxDisabled - Boolean. Whether desktop sharing should be disabled on Firefox. Example: false.
-    7. desktopSharingFirefoxMaxVersionExtRequired - The maximum version of Firefox which requires a jidesha extension. Example: if set to 41, we will require the extension for Firefox versions up to and including 41. On Firefox 42 and higher, we will run without the extension. If set to -1, an extension will be required for all versions of Firefox.
-    8. desktopSharingFirefoxExtensionURL - The URL to the Firefox extension for desktop sharing. "null" if no extension is required.
-    9. disableAudioLevels - boolean property. Enables/disables audio levels.
-    10. disableSimulcast - boolean property. Enables/disables simulcast.
-    11. enableWindowOnErrorHandler - boolean property (default false). Enables/disables attaching global onerror handler (window.onerror).
-    12. disableThirdPartyRequests - if true - callstats will be disabled and the callstats API won't be included.
-    13. enableAnalyticsLogging - boolean property (default false). Enables/disables analytics logging.
-    14. callStatsCustomScriptUrl - (optional) custom url to access callstats client script
-    15. callStatsConfIDNamespace - (optional) a namespace to prepend the callstats conference ID with. Defaults to the window.location.hostname
+    2. desktopSharingChromeExtId - The ID of the jidesha extension for Chrome. Example: 'mbocklcggfhnbahlnepmldehdhpjfcjp'
+    3. desktopSharingChromeDisabled - Boolean. Whether desktop sharing should be disabled on Chrome. Example: false.
+    4. desktopSharingChromeSources - Array of strings with the media sources to use when using screen sharing with the Chrome extension. Example: ['screen', 'window']
+    5. desktopSharingChromeMinExtVersion - Required version of Chrome extension. Example: '0.1'
+    6. desktopSharingFirefoxExtId - The ID of the jidesha extension for Firefox. If null, we assume that no extension is required.
+    7. desktopSharingFirefoxDisabled - Boolean. Whether desktop sharing should be disabled on Firefox. Example: false.
+    8. desktopSharingFirefoxMaxVersionExtRequired - The maximum version of Firefox which requires a jidesha extension. Example: if set to 41, we will require the extension for Firefox versions up to and including 41. On Firefox 42 and higher, we will run without the extension. If set to -1, an extension will be required for all versions of Firefox.
+    9. desktopSharingFirefoxExtensionURL - The URL to the Firefox extension for desktop sharing. "null" if no extension is required.
+    10. disableAudioLevels - boolean property. Enables/disables audio levels.
+    11. disableSimulcast - boolean property. Enables/disables simulcast.
+    12. enableWindowOnErrorHandler - boolean property (default false). Enables/disables attaching global onerror handler (window.onerror).
+    13. disableThirdPartyRequests - if true - callstats will be disabled and the callstats API won't be included.
+    14. enableAnalyticsLogging - boolean property (default false). Enables/disables analytics logging.
+    15. callStatsCustomScriptUrl - (optional) custom url to access callstats client script
+    16. callStatsConfIDNamespace - (optional) a namespace to prepend the callstats conference ID with. Defaults to the window.location.hostname
 
 * ```JitsiMeetJS.JitsiConnection``` - the ```JitsiConnection``` constructor. You can use that to create new server connection.
 

doc/example/example.js

 // JitsiMeetJS.setLogLevel(JitsiMeetJS.logLevels.ERROR);
 var initOptions = {
     disableAudioLevels: true,
-    // Desktop sharing method. Can be set to 'ext', 'webrtc' or false to disable.
-    desktopSharingChromeMethod: 'ext',
     // The ID of the jidesha extension for Chrome.
     desktopSharingChromeExtId: 'mbocklcggfhnbahlnepmldehdhpjfcjp',
+    // Whether desktop sharing should be disabled on Chrome.
+    desktopSharingChromeDisabled: false,
     // The media sources to use when using screen sharing with the Chrome
     // extension.
     desktopSharingChromeSources: ['screen', 'window'],

modules/RTC/ScreenObtainer.js

      * Initializes the function used to obtain a screen capture
      * (this.obtainStream).
      *
-     * If the browser is Chrome, it uses the value of
-     * 'options.desktopSharingChromeMethod' (or 'options.desktopSharing') to
-     * decide whether to use the a Chrome extension (if the value is 'ext'),
-     * use the "screen" media source (if the value is 'webrtc'),
-     * or disable screen capture (if the value is other).
-     * Note that for the "screen" media source to work the
-     * 'chrome://flags/#enable-usermedia-screen-capture' flag must be set.
      * @param options {object}
      * @param gum {Function} GUM method
      */
         if (RTCBrowserType.isFirefox())
             initFirefoxExtensionDetection(options);
 
-        // TODO remove this, options.desktopSharing is deprecated.
-        var chromeMethod =
-            (options.desktopSharingChromeMethod || options.desktopSharing);
-
         if (RTCBrowserType.isNWJS()) {
             obtainDesktopStream = (options, onSuccess, onFailure) => {
                 window.JitsiMeetNW.obtainDesktopStream (
                 logger.info("Using Temasys plugin for desktop sharing");
             }
         } else if (RTCBrowserType.isChrome()) {
-            if (chromeMethod == "ext") {
-                if (RTCBrowserType.getChromeVersion() >= 34) {
-                    obtainDesktopStream =
-                        this.obtainScreenFromExtension;
-                    logger.info("Using Chrome extension for desktop sharing");
-                    initChromeExtension(options);
-                } else {
-                    logger.info("Chrome extension not supported until ver 34");
-                }
-            } else if (chromeMethod == "webrtc") {
-                obtainDesktopStream = obtainWebRTCScreen;
-                logger.info("Using Chrome WebRTC for desktop sharing");
+            if (options.desktopSharingChromeDisabled ||
+                options.desktopSharingChromeMethod === false ||
+                !options.desktopSharingChromeExtId) {
+                // TODO: desktopSharingChromeMethod is deprecated, remove.
+                obtainDesktopStream = null;
+            } else if (RTCBrowserType.getChromeVersion() >= 34) {
+                obtainDesktopStream =
+                    this.obtainScreenFromExtension;
+                logger.info("Using Chrome extension for desktop sharing");
+                initChromeExtension(options);
+            } else {
+                logger.info("Chrome extension not supported until ver 34");
             }
         } else if (RTCBrowserType.isFirefox()) {
             if (options.desktopSharingFirefoxDisabled) {
 /**
  * Constructs inline install URL for Chrome desktop streaming extension.
  * The 'chromeExtensionId' must be defined in options parameter.
- * @param options supports "desktopSharingChromeExtId" and "chromeExtensionId"
+ * @param options supports "desktopSharingChromeExtId"
  * @returns {string}
  */
 function getWebStoreInstallUrl(options)
 {
-    //TODO remove chromeExtensionId (deprecated)
     return "https://chrome.google.com/webstore/detail/" +
-        (options.desktopSharingChromeExtId || options.chromeExtensionId);
+        options.desktopSharingChromeExtId;
 }
 
 /**
         return;
     }
     chrome.runtime.sendMessage(
-        //TODO: remove chromeExtensionId (deprecated)
-        (options.desktopSharingChromeExtId || options.chromeExtensionId),
+        options.desktopSharingChromeExtId,
         { getVersion: true },
         response => {
             if (!response || !response.version) {
             // Check installed extension version
             var extVersion = response.version;
             logger.log('Extension version is: ' + extVersion);
-            //TODO: remove minChromeExtVersion (deprecated)
             var updateRequired
                 = isUpdateRequired(
-                    (options.desktopSharingChromeMinExtVersion ||
-                        options.minChromeExtVersion),
+                    options.desktopSharingChromeMinExtVersion,
                     extVersion);
             callback(!updateRequired, updateRequired);
         }
     // Sends 'getStream' msg to the extension.
     // Extension id must be defined in the config.
     chrome.runtime.sendMessage(
-        //TODO: remove chromeExtensionId (deprecated)
-        (options.desktopSharingChromeExtId || options.chromeExtensionId),
+        options.desktopSharingChromeExtId,
         {
             getStream: true,
-            //TODO: remove desktopSharingSources (deprecated).
-            sources: (options.desktopSharingChromeSources ||
-                options.desktopSharingSources)
+            sources: options.desktopSharingChromeSources
         },
         response => {
             if (!response) {
  * Initializes <link rel=chrome-webstore-item /> with extension id set in
  * config.js to support inline installs. Host site must be selected as main
  * website of published extension.
- * @param options supports "desktopSharingChromeExtId" and "chromeExtensionId"
+ * @param options supports "desktopSharingChromeExtId"
  */
 function initInlineInstalls(options)
 {
 /**
  * Starts the detection of an installed jidesha extension for firefox.
  * @param options supports "desktopSharingFirefoxDisabled",
- * "desktopSharingFirefoxExtId" and "chromeExtensionId"
+ * "desktopSharingFirefoxExtId"
  */
 function initFirefoxExtensionDetection(options) {
     if (options.desktopSharingFirefoxDisabled) {