ambari/ambari-web/app/controllers/application.js

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */


var App = require('app');

App.ApplicationController = Em.Controller.extend({

  name: 'applicationController',

  clusterName: function () {
    return (App.router.get('clusterController.clusterName') || 'My Cluster');
  }.property('App.router.clusterController.clusterName'),

  clusterDisplayName: function () {
    var name = this.get('clusterName');
    return name.length > 13 ? name.substr(0, 10) + "..." : name;
  }.property('clusterName'),

  isClusterDataLoaded: function() {
    return App.router.get('clusterController.isLoaded') && App.router.get('loggedIn');
  }.property('App.router.clusterController.isLoaded','App.router.loggedIn'),

  init: function(){
    this._super();
  },

  dataLoading: function () {
    var dfd = $.Deferred();
    var self = this;
    this.getUserPref(this.persistKey()).done(function () {
      var curPref = self.get('currentPrefObject');
      self.set('currentPrefObject', null);
      dfd.resolve(curPref);
    });
    return dfd.promise();
  },
  persistKey: function (loginName) {
    if (App.get('testMode')) {
      return 'admin_settings_show_bg';
    }
    if (!loginName)
      loginName = App.router.get('loginName');
    return 'admin-settings-show-bg-' + loginName;
  },
  currentPrefObject: null,

  /**
   * get persist value from server with persistKey
   */
  getUserPref: function(key){
    return App.ajax.send({
      name: 'settings.get.user_pref',
      sender: this,
      data: {
        key: key
      },
      success: 'getUserPrefSuccessCallback',
        error: 'getUserPrefErrorCallback'
    });
  },
  getUserPrefSuccessCallback: function (response, request, data) {
    if (response != null) {
      console.log('Got persist value from server with key ' + data.key + '. Value is: ' + response);
      this.set('currentPrefObject', response);
      return response;
    }
  },
  getUserPrefErrorCallback: function (request, ajaxOptions, error) {
    // this user is first time login
    if (request.status == 404) {
      console.log('Persist did NOT find the key');
      this.set('currentPrefObject', true);
      this.postUserPref(this.persistKey(), true);
      return true;
    }
  },
  /**
   * post persist key/value to server, value is object
   */
  postUserPref: function (key, value) {
    var keyValuePair = {};
    keyValuePair[key] = JSON.stringify(value);
    App.ajax.send({
      'name': 'settings.post.user_pref',
      'sender': this,
      'beforeSend': 'postUserPrefBeforeSend',
      'data': {
        'keyValuePair': keyValuePair
      }
    });
  },
  postUserPrefBeforeSend: function(request, ajaxOptions, data){
    console.log('BeforeSend to persist: persistKeyValues', data.keyValuePair);
  },

  showSettingsPopup: function() {
    // Settings only for admins
    if (!App.get('isAdmin')) return;

    var self = this;
    var curValue = null;
    this.dataLoading().done(function (initValue) {
      App.ModalPopup.show({
        header: Em.I18n.t('common.userSettings'),
        bodyClass: Em.View.extend({
          templateName: require('templates/common/settings'),
          isNotShowBgChecked: !initValue,
          updateValue: function () {
            curValue = !this.get('isNotShowBgChecked');
          }.observes('isNotShowBgChecked')
        }),
        primary: Em.I18n.t('common.save'),
        onPrimary: function() {
          if (curValue == null) {
            curValue = initValue;
          }
          var key = self.persistKey();
          if (!App.testMode) {
            self.postUserPref(key, curValue);
          }
          this.hide();
        }
      })
    });
  }

});