components/proximity_auth/webui/resources/log-buffer.js

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 Polymer('log-buffer', {
   6   publish: {
   7     /**
   8      * List of displayed logs.
   9      * @type {?Array<{{
  10      *    text: string,
  11      *    time: string,
  12      *    file: string,
  13      *    line: number,
  14      *    severity: number,
  15      * }}>} LogMessage
  16      */
  17     logs: null,
  18   },
  19
  20   /**
  21    * Called when an instance is created.
  22    */
  23   created: function() {
  24     this.logs = [];
  25     // We assume that only one instance of log-buffer is ever created.
  26     LogBufferInterface = this;
  27     chrome.send('getLogMessages');
  28   },
  29
  30   // Clears the native LogBuffer.
  31   clearLogs: function() {
  32     chrome.send('clearLogBuffer');
  33   },
  34
  35   // Handles when a new log message is added.
  36   onLogMessageAdded: function(log) {
  37     this.logs.push(log);
  38   },
  39
  40   // Handles when the logs are cleared.
  41   onLogBufferCleared: function() {
  42     this.logs = [];
  43   },
  44
  45   // Handles when the logs are returned in response to the 'getLogMessages'
  46   // request.
  47   onGotLogMessages: function(logs) {
  48     this.logs = logs;
  49   }
  50 });
  51
  52 // Interface with the native WebUI component for LogBuffer events. The functions
  53 // contained in this object will be invoked by the browser for each operation
  54 // performed on the native LogBuffer.
  55 LogBufferInterface = {
  56   /**
  57    * Called when a new log message is added.
  58    * @type {function(LogMessage)}
  59    */
  60   onLogMessageAdded: function(log) {},
  61
  62   /**
  63    * Called when the log buffer is cleared.
  64    * @type {function()}
  65    */
  66   onLogBufferCleared: function() {},
  67
  68   /**
  69    * Called in response to chrome.send('getLogMessages') with the log messages
  70    * currently in the buffer.
  71    * @type {function(Array<LogMessage>)}
  72    */
  73   onGotLogMessages: function(messages) {},
  74 };