native_client_sdk/src/examples/api/var_dictionary/example.js

   1 // Copyright (c) 2013 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 function attachListeners() {
   6   var radioEls = document.querySelectorAll('input[type="radio"]');
   7   for (var i = 0; i < radioEls.length; ++i) {
   8     radioEls[i].addEventListener('click', onRadioClicked);
   9   }
  10
  11   // Wire up the 'click' event for each function's button.
  12   var functionEls = document.querySelectorAll('.function');
  13   for (var i = 0; i < functionEls.length; ++i) {
  14     var functionEl = functionEls[i];
  15     var id = functionEl.getAttribute('id');
  16     var buttonEl = functionEl.querySelector('button');
  17
  18     // The function name matches the element id.
  19     var func = window[id + 'ButtonClicked'];
  20     buttonEl.addEventListener('click', func);
  21   }
  22 }
  23
  24 function onRadioClicked(e) {
  25   var divId = this.id.slice(5);  // skip "radio"
  26   var functionEls = document.querySelectorAll('.function');
  27   for (var i = 0; i < functionEls.length; ++i) {
  28     var visible = functionEls[i].id === divId;
  29     if (functionEls[i].id === divId)
  30       functionEls[i].removeAttribute('hidden');
  31     else
  32       functionEls[i].setAttribute('hidden', '');
  33   }
  34 }
  35
  36 function getButtonClicked(e) {
  37   var key = document.getElementById('getKey').value;
  38   common.naclModule.postMessage({cmd: 'Get', key: key});
  39 }
  40
  41 function setButtonClicked(e) {
  42   var key = document.getElementById('setKey').value;
  43   var valueString = document.getElementById('setValue').value;
  44   var value;
  45   try {
  46     value = JSON.parse(valueString);
  47   } catch (e) {
  48     common.logMessage('Error parsing value: ' + e);
  49     return;
  50   }
  51
  52   common.naclModule.postMessage({cmd: 'Set', key: key, value: value});
  53 }
  54
  55 function deleteButtonClicked(e) {
  56   var key = document.getElementById('deleteKey').value;
  57   common.naclModule.postMessage({cmd: 'Delete', key: key});
  58 }
  59
  60 function getkeysButtonClicked(e) {
  61   common.naclModule.postMessage({cmd: 'GetKeys'});
  62 }
  63
  64 function haskeyButtonClicked(e) {
  65   var key = document.getElementById('haskeyKey').value;
  66   common.naclModule.postMessage({cmd: 'HasKey', key: key});
  67 }
  68
  69 // Called by the common.js module.
  70 function handleMessage(message_event) {
  71   var msg = message_event.data;
  72
  73   var cmd = msg.cmd;
  74   var result = msg.result;
  75   var newDict = msg.dict;
  76
  77   // cmd will be empty when the module first loads and sends the contents of
  78   // its dictionary.
  79   //
  80   // Note that cmd is a String object, not a primitive, so the comparison cmd
  81   // !== '' will always fail.
  82   if (cmd != '') {
  83     common.logMessage(
  84         'Function ' + cmd + ' returned ' + JSON.stringify(result));
  85   }
  86
  87   var dictEl = document.getElementById('dict');
  88   dictEl.textContent = JSON.stringify(newDict, null, '  ');
  89 }