Allow for a list of enabled buttons to be passed as part of interfaceConfig

index.html

     <script src="libs/popover.js?v=1"></script><!-- bootstrap tooltip lib -->
     <script src="libs/toastr.js?v=1"></script><!-- notifications lib -->
     <script src="interface_config.js?v=5"></script>
-    <script src="libs/app.bundle.js?v=133"></script>
+    <script src="libs/app.bundle.js?v=138"></script>
     <script src="analytics.js?v=1"></script><!-- google analytics plugin -->
     <link rel="stylesheet" href="css/font.css?v=7"/>
     <link rel="stylesheet" href="css/toastr.css?v=1">

interface_config.js

     APP_NAME: "Jitsi Meet",
     INVITATION_POWERED_BY: true,
     ACTIVE_SPEAKER_AVATAR_SIZE: 100,
+    TOOLBAR_BUTTONS: ['authentication', 'microphone', 'camera', 'desktop', 'record', 'security', 'invite',
+        'chat', 'prezi', 'etherpad', 'fullscreen', 'sip', 'dialpad', 'settings', 'hangup', 'filmstrip', 'contacts'],
     /**
      * Whether to only show the filmstrip (and hide the toolbar).
      */

modules/UI/toolbars/BottomToolbar.js

 /* global $ */
 var PanelToggler = require("../side_pannels/SidePanelToggler");
+var UIUtil = require("../util/UIUtil");
 
 var buttonHandlers = {
     "bottom_toolbar_contact_list": function () {
     }
 };
 
+
+var defaultBottomToolbarButtons = {
+    'chat': '#bottom_toolbar_chat',
+    'contacts': '#bottom_toolbar_contact_list',
+    'filmstrip': '#bottom_toolbar_film_strip'
+};
+
+
 var BottomToolbar = (function (my) {
     my.init = function () {
+        UIUtil.hideDisabledButtons(defaultBottomToolbarButtons);
+
         for(var k in buttonHandlers)
             $("#" + k).click(buttonHandlers[k]);
     };

modules/UI/toolbars/Toolbar.js

             });
     }
 };
+var defaultToolbarButtons = {
+    'microphone': '#toolbar_button_mute',
+    'camera': '#toolbar_button_camera',
+    'desktop': '#toolbar_button_desktopsharing',
+    'security': '#toolbar_button_security',
+    'invite': '#toolbar_button_link',
+    'chat': '#toolbar_button_chat',
+    'prezi': '#toolbar_button_prezi',
+    'ethherpad': '#toolbar_button_etherpad',
+    'fullscreen': '#toolbar_button_fullScreen',
+    'settings': '#toolbar_button_settings',
+    'hangup': '#toolbar_button_hangup'
+};
 
 function hangup() {
     APP.xmpp.disposeConference();
 var Toolbar = (function (my) {
 
     my.init = function (ui) {
+        UIUtil.hideDisabledButtons(defaultToolbarButtons);
+
         for(var k in buttonHandlers)
             $("#" + k).click(buttonHandlers[k]);
         UI = ui;
      * Disables and enables some of the buttons.
      */
     my.setupButtonsFromConfig = function () {
-        if (config.disablePrezi) {
+        if (UIUtil.isButtonEnabled('prezi')) {
             $("#toolbar_button_prezi").css({display: "none"});
         }
     };
      * @param show <tt>true</tt> to show or <tt>false</tt> to hide
      */
     my.showAuthenticateButton = function (show) {
-        if (show) {
+        if (UIUtil.isButtonEnabled('authentication') && show) {
             $('#authentication').css({display: "inline"});
         }
         else {
 
     // Shows or hides the 'recording' button.
     my.showRecordingButton = function (show) {
-        if (!config.enableRecording) {
-            return;
-        }
-
-        if (show) {
+        if (UIUtil.isButtonEnabled('recording') && show) {
             $('#toolbar_button_record').css({display: "inline-block"});
         }
         else {
 
     // checks whether recording is enabled and whether we have params to start automatically recording
     my.checkAutoRecord = function () {
-        if (config.enableRecording && config.autoRecord) {
+        if (UIUtil.isButtonEnabled('recording') && config.autoRecord) {
             toggleRecording(config.autoRecordToken);
         }
     }
 
     // Shows or hides SIP calls button
     my.showSipCallButton = function (show) {
-        if (APP.xmpp.isSipGatewayEnabled() && show) {
+        if (APP.xmpp.isSipGatewayEnabled() && UIUtil.isButtonEnabled('sip') && show) {
             $('#toolbar_button_sip').css({display: "inline-block"});
         } else {
             $('#toolbar_button_sip').css({display: "none"});
 
     // Shows or hides the dialpad button
     my.showDialPadButton = function (show) {
-        if (show) {
+        if (UIUtil.isButtonEnabled('dialpad') && show) {
             $('#toolbar_button_dialpad').css({display: "inline-block"});
         } else {
             $('#toolbar_button_dialpad').css({display: "none"});
      * @param show <tt>true</tt> to show
      */
     my.showLoginButton = function (show) {
-        if (show) {
+        if (UIUtil.isButtonEnabled('authentication') && show) {
             $('#toolbar_button_login').css({display: "list-item"});
         } else {
             $('#toolbar_button_login').css({display: "none"});
      * @param show <tt>true</tt> to show
      */
     my.showLogoutButton = function (show) {
-        if (show) {
+        if (UIUtil.isButtonEnabled('authentication') && show) {
             $('#toolbar_button_logout').css({display: "list-item"});
         } else {
             $('#toolbar_button_logout').css({display: "none"});

modules/UI/toolbars/ToolbarToggler.js

  DesktopStreaming.showDesktopSharingButton */
 
 var toolbarTimeoutObject,
-    toolbarTimeout = interfaceConfig.INITIAL_TOOLBAR_TIMEOUT;
+    toolbarTimeout = interfaceConfig.INITIAL_TOOLBAR_TIMEOUT,
+    UIUtil = require("../util/UIUtil");
 
 function showDesktopSharingButton() {
-    if (APP.desktopsharing.isDesktopSharingEnabled()) {
+    if (APP.desktopsharing.isDesktopSharingEnabled() && UIUtil.isButtonEnabled('desktop')) {
         $('#toolbar_button_desktopsharing').css({display: "inline-block"});
     } else {
         $('#toolbar_button_desktopsharing').css({display: "none"});

modules/UI/util/UIUtil.js

-/* global $ */
+/* global $, config, interfaceConfig */
 /**
  * Created by hristo on 12/22/14.
  */
-module.exports = {
+var UIUtil = module.exports = {
     /**
      * Returns the available video width.
      */
         } else {
             container.appendChild(newChild);
         }
+    },
+
+    isButtonEnabled: function (name) {
+        var isEnabled = interfaceConfig.TOOLBAR_BUTTONS.indexOf(name) !== -1;
+        if (name === 'prezi') {
+            return isEnabled && !config.disablePrezi;
+        } else if (name === 'recording') {
+            return isEnabled && config.enableRecording;
+        }
+        return isEnabled;
+    },
+
+    hideDisabledButtons: function (mappings) {
+        var selector = Object.keys(mappings)
+          .map(function (buttonName) { return UIUtil.isButtonEnabled(buttonName) ? null : mappings[buttonName]; })
+          .filter(function (item) { return item; })
+          .join(',');
+        $(selector).hide();
     }
 };