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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
/**
* Takes the |componentsData| input argument which represents data about the
* currently installed components and populates the html jstemplate with
* that data. It expects an object structure like the above.
* @param {Object} componentsData Detailed info about installed components.
* Same expected format as returnComponentsData().
*/
function renderTemplate(componentsData) {
// This is the javascript code that processes the template:
var input = new JsEvalContext(componentsData);
var output = $('component-template').cloneNode(true);
$('component-placeholder').innerHTML = '';
$('component-placeholder').appendChild(output);
jstProcess(input, output);
output.removeAttribute('hidden');
}
/**
* Asks the C++ ComponentsDOMHandler to get details about the installed
* components.
* The ComponentsDOMHandler should reply to returnComponentsData() (below).
*/
function requestComponentsData() {
chrome.send('requestComponentsData');
}
/**
* Called by the WebUI to re-populate the page with data representing the
* current state of installed components.
* @param {Object} componentsData Detailed info about installed components. The
* template expects each component's format to match the following
* structure to correctly populate the page:
* {
* components: [
* {
* name: 'Component1',
* version: '1.2.3',
* },
* {
* name: 'Component2',
* version: '4.5.6',
* },
* ]
* }
*/
function returnComponentsData(componentsData) {
var bodyContainer = $('body-container');
var body = document.body;
bodyContainer.style.visibility = 'hidden';
body.className = '';
renderTemplate(componentsData);
// Add handlers to dynamically created HTML elements.
var links = document.getElementsByClassName('button-check-update');
for (var i = 0; i < links.length; i++) {
links[i].onclick = function(e) {
handleCheckUpdate(this);
e.preventDefault();
};
}
if (cr.isChromeOS) {
// Disable some controls for Guest in ChromeOS.
uiAccountTweaks.UIAccountTweaks.applyGuestSessionVisibility(document);
// Disable some controls for Public session in ChromeOS.
uiAccountTweaks.UIAccountTweaks.applyPublicSessionVisibility(document);
}
bodyContainer.style.visibility = 'visible';
body.className = 'show-tmi-mode-initial';
}
/**
* This event function is called from component UI indicating changed state
* of component updater service.
* @param {Object} eventArgs Contains event and component ID. Component ID is
* optional.
*/
function onComponentEvent(eventArgs) {
if (eventArgs['id']) {
var id = eventArgs['id'];
$('status-' + id).textContent = eventArgs['event'];
}
if (eventArgs['version']) {
$('version-' + id).textContent = eventArgs['version'];
}
}
/**
* Handles an 'enable' or 'disable' button getting clicked.
* @param {HTMLElement} node The HTML element representing the component
* being checked for update.
*/
function handleCheckUpdate(node) {
$('status-' + String(node.id)).textContent =
loadTimeData.getString('checkingLabel');
// Tell the C++ ComponentssDOMHandler to check for update.
chrome.send('checkUpdate', [String(node.id)]);
}
// Get data and have it displayed upon loading.
document.addEventListener('DOMContentLoaded', requestComponentsData);
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