chrome/browser/resources/predictors/autocomplete_action_predictor.js

   1 // Copyright (c) 2012 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 /**
   6  * Requests the database from the backend.
   7  */
   8 function requestAutocompleteActionPredictorDb() {
   9   chrome.send('requestAutocompleteActionPredictorDb');
  10 }
  11
  12 /**
  13  * Callback from backend with the database contents. Sets up some globals and
  14  * calls to create the UI.
  15  * @param {Dictionary} database Information about AutocompleteActionPredictor
  16  *     including the database as a flattened list, a boolean indicating if the
  17  *     system is enabled and the current hit weight.
  18  */
  19 function updateAutocompleteActionPredictorDb(database) {
  20   console.debug('Updating Table NAP DB');
  21
  22   var filter = $('filter');
  23   filter.disabled = false;
  24   filter.onchange = function() {
  25     updateAutocompleteActionPredictorDbView(database);
  26   };
  27
  28   updateAutocompleteActionPredictorDbView(database);
  29 }
  30
  31 /**
  32  * Updates the table from the database.
  33  * @param {Dictionary} database Information about AutocompleteActionPredictor
  34  *     including the database as a flattened list, a boolean indicating if the
  35  *     system is enabled and the current hit weight.
  36  */
  37 function updateAutocompleteActionPredictorDbView(database) {
  38   var databaseSection = $('databaseTableBody');
  39   var showEnabled = database.enabled && database.db;
  40
  41   $('autocompleteActionPredictorEnabledMode').hidden = !showEnabled;
  42   $('autocompleteActionPredictorDisabledMode').hidden = showEnabled;
  43
  44   if (!showEnabled)
  45     return;
  46
  47   var filter = $('filter');
  48
  49   // Clear any previous list.
  50   databaseSection.textContent = '';
  51
  52   for (var i = 0; i < database.db.length; ++i) {
  53     var entry = database.db[i];
  54
  55     if (!filter.checked || entry.confidence > 0) {
  56       var row = document.createElement('tr');
  57       row.className = (entry.confidence > 0.8 ? 'action-prerender' :
  58                           (entry.confidence > 0.5 ? 'action-preconnect' :
  59                               'action-none'));
  60
  61       row.appendChild(document.createElement('td')).textContent =
  62           entry.user_text;
  63       row.appendChild(document.createElement('td')).textContent = entry.url;
  64       row.appendChild(document.createElement('td')).textContent =
  65           entry.hit_count;
  66       row.appendChild(document.createElement('td')).textContent =
  67           entry.miss_count;
  68       row.appendChild(document.createElement('td')).textContent =
  69           entry.confidence;
  70
  71       databaseSection.appendChild(row);
  72     }
  73   }
  74   $('countBanner').textContent = 'Entries: ' + databaseSection.children.length;
  75 }
  76
  77 document.addEventListener('DOMContentLoaded',
  78                           requestAutocompleteActionPredictorDb);