firebase-common-behavior.html

<!--
@license
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file or at
https://github.com/firebase/polymerfire/blob/master/LICENSE
-->

<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../app-storage/app-network-status-behavior.html">
<link rel="import" href="firebase-app-script.html">
<script>
  (function() {
    'use strict';

    /** @polymerBehavior Polymer.FirebaseCommonBehavior */
    Polymer.FirebaseCommonBehaviorImpl = {
      properties: {


        /**
        * @type {!firebase.app.App|undefined}
        */
        app: {
          type: Object,
          notify: true,
          observer: '__appChanged'
        },

        appName: {
          type: String,
          notify: true,
          value: '',
          observer: '__appNameChanged'
        }
      },

      __appNameChanged: function(appName) {
        if (this.app && this.app.name === appName) {
          return;
        }

        try {
          if (appName == null) {
            this.app = firebase.app();
          } else {
            this.app = firebase.app(appName);
          }
        } catch (e) {
          // appropriate app hasn't been initialized yet
          var self = this;
          window.addEventListener('firebase-app-initialized',
              function onFirebaseAppInitialized(event) {
                window.removeEventListener(
                    'firebase-app-initialized', onFirebaseAppInitialized);
                self.__appNameChanged(self.appName);
              });
        }
      },

      __appChanged: function(app) {
        if (app && app.name === this.appName) {
          return;
        }

        this.appName = app ? app.name : '';
      },

      __onError: function(err) {
        this.fire('error', err);
      }
    };

    /** @polymerBehavior */
    Polymer.FirebaseCommonBehavior = [
      Polymer.AppNetworkStatusBehavior,
      Polymer.FirebaseCommonBehaviorImpl
    ];
  })();
</script>