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// Copyright (c) 2012 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.
cr.define('cert_viewer', function() {
'use strict';
/**
* Initialize the certificate viewer dialog by wiring up the close button,
* substituting in translated strings and requesting certificate details.
*/
function initialize() {
cr.ui.decorate('tabbox', cr.ui.TabBox);
var args = JSON.parse(chrome.getVariableValue('dialogArguments'));
getCertificateInfo(args);
/**
* Initialize the second tab's contents.
* This is a 'oneShot' function, meaning it will only be invoked once,
* no matter how many times it is called. This is done for unit-testing
* purposes in case a test needs to initialize the tab before the timer
* fires.
*/
var initializeDetailTab = oneShot(function() {
initializeTree($('hierarchy'), showCertificateFields);
initializeTree($('cert-fields'), showCertificateFieldValue);
createCertificateHierarchy(args.hierarchy);
});
// The second tab's contents aren't visible on startup, so we can
// shorten startup by not populating those controls until after we
// have had a chance to draw the visible controls the first time.
// The value of 200ms is quick enough that the user couldn't open the
// tab in that time but long enough to allow the first tab to draw on
// even the slowest machine.
setTimeout(initializeDetailTab, 200);
$('tabbox').addEventListener('selectedChange', function f(e) {
$('tabbox').removeEventListener('selectedChange', f);
initializeDetailTab();
}, true);
stripGtkAccessorKeys();
$('export').onclick = exportCertificate;
}
/**
* Decorate a function so that it can only be invoked once.
*/
function oneShot(fn) {
var fired = false;
return function() {
if (fired)
return;
fired = true;
fn();
};
}
/**
* Initialize a cr.ui.Tree object from a given element using the specified
* change handler.
* @param {HTMLElement} tree The HTMLElement to style as a tree.
* @param {function()} handler Function to call when a node is selected.
*/
function initializeTree(tree, handler) {
cr.ui.decorate(tree, cr.ui.Tree);
tree.detail = {payload: {}, children: {}};
tree.addEventListener('change', handler);
}
/**
* The tab name strings in the languages file have accessor keys indicated
* by a preceding & sign. Strip these out for now.
* TODO(flackr) These accessor keys could be implemented with Javascript or
* translated strings could be added / modified to remove the & sign.
*/
function stripGtkAccessorKeys() {
// Copy all the tab labels into an array.
var nodes = Array.prototype.slice.call($('tabs').childNodes, 0);
nodes.push($('export'));
for (var i = 0; i < nodes.length; i++)
nodes[i].textContent = nodes[i].textContent.replace('&', '');
}
/**
* Expand all nodes of the given tree object.
* @param {cr.ui.Tree} tree The tree object to expand all nodes on.
*/
function revealTree(tree) {
tree.expanded = true;
for (var key in tree.detail.children) {
revealTree(tree.detail.children[key]);
}
}
/**
* This function is called from certificate_viewer_ui.cc with the certificate
* information. Display all returned information to the user.
* @param {Object} certInfo Certificate information in named fields.
*/
function getCertificateInfo(certInfo) {
for (var key in certInfo.general) {
$(key).textContent = certInfo.general[key];
}
}
/**
* This function populates the certificate hierarchy.
* @param {Object} hierarchy A dictionary containing the hierarchy.
*/
function createCertificateHierarchy(hierarchy) {
var treeItem = $('hierarchy');
var root = constructTree(hierarchy[0]);
treeItem.detail.children['root'] = root;
treeItem.add(root);
// Select the last item in the hierarchy (really we have a list here - each
// node has at most one child). This will reveal the parent nodes and
// populate the fields view.
var last = root;
while (last.detail.children && last.detail.children[0])
last = last.detail.children[0];
last.selected = true;
}
/**
* Constructs a cr.ui.TreeItem corresponding to the passed in tree
* @param {Object} tree Dictionary describing the tree structure.
* @return {cr.ui.TreeItem} Tree node corresponding to the input dictionary.
*/
function constructTree(tree) {
var treeItem = new cr.ui.TreeItem({
label: tree.label,
detail: {payload: tree.payload ? tree.payload : {}, children: {}}
});
if (tree.children) {
for (var i = 0; i < tree.children.length; i++) {
treeItem.add(
treeItem.detail.children[i] = constructTree(tree.children[i]));
}
}
return treeItem;
}
/**
* Clear any previous certificate fields in the tree.
*/
function clearCertificateFields() {
var treeItem = $('cert-fields');
for (var key in treeItem.detail.children) {
treeItem.remove(treeItem.detail.children[key]);
delete treeItem.detail.children[key];
}
}
/**
* Request certificate fields for the selected certificate in the hierarchy.
*/
function showCertificateFields() {
clearCertificateFields();
var item = $('hierarchy').selectedItem;
if (item && item.detail.payload.index !== undefined)
chrome.send('requestCertificateFields', [item.detail.payload.index]);
}
/**
* Show the returned certificate fields for the selected certificate.
* @param {Object} certFields A dictionary containing the fields tree
* structure.
*/
function getCertificateFields(certFields) {
clearCertificateFields();
var treeItem = $('cert-fields');
treeItem.add(
treeItem.detail.children['root'] = constructTree(certFields[0]));
revealTree(treeItem);
// Ensure the list is scrolled to the top by selecting the first item.
treeItem.children[0].selected = true;
}
/**
* Show certificate field value for a selected certificate field.
*/
function showCertificateFieldValue() {
var item = $('cert-fields').selectedItem;
if (item && item.detail.payload.val)
$('cert-field-value').textContent = item.detail.payload.val;
else
$('cert-field-value').textContent = '';
}
/**
* Export the selected certificate.
*/
function exportCertificate() {
var item = $('hierarchy').selectedItem;
if (item && item.detail.payload.index !== undefined)
chrome.send('exportCertificate', [item.detail.payload.index]);
}
return {
initialize: initialize,
getCertificateFields: getCertificateFields,
};
});
document.addEventListener('DOMContentLoaded', cert_viewer.initialize);
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