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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.
/**
* Handles DumpDatabase tab for syncfs-internals.
*/
var DumpDatabase = (function() {
'use strict';
var DumpDatabase = {};
/**
* Get the database dump.
*/
function getDatabaseDump() {
chrome.send('getDatabaseDump');
}
/**
* Creates an element named |elementName| containing the content |text|.
* @param {string} elementName Name of the new element to be created.
* @param {string} text Text to be contained in the new element.
* @return {HTMLElement} The newly created HTML element.
*/
function createElementFromText(elementName, text) {
var element = document.createElement(elementName);
element.appendChild(document.createTextNode(text));
return element;
}
/**
* Creates a table by filling |header| and |body|.
* @param {HTMLElement} div The outer container of the table to be renderered.
* @param {HTMLElement} header The table header element to be fillied by
* this function.
* @param {HTMLElement} body The table body element to be filled by this
* function.
* @param {Array} databaseDump List of dictionaries for the database dump.
* The first element must have metadata of the entry.
* The remaining elements must be dictionaries for the database dump,
* which can be iterated using the 'keys' fields given by the first
* element.
*/
function createDatabaseDumpTable(div, header, body, databaseDump) {
var metadata = databaseDump.shift();
div.appendChild(createElementFromText('h3', metadata['title']));
var tr = document.createElement('tr');
for (var i = 0; i < metadata.keys.length; ++i)
tr.appendChild(createElementFromText('td', metadata.keys[i]));
header.appendChild(tr);
for (var i = 0; i < databaseDump.length; i++) {
var entry = databaseDump[i];
var tr = document.createElement('tr');
for (var k = 0; k < metadata.keys.length; ++k)
tr.appendChild(createElementFromText('td', entry[metadata.keys[k]]));
body.appendChild(tr);
}
}
/**
* Handles callback from onGetDatabaseDump.
* @param {Array} databaseDump List of lists for the database dump.
*/
DumpDatabase.onGetDatabaseDump = function(databaseDump) {
var placeholder = $('dump-database-placeholder');
placeholder.innerHTML = '';
for (var i = 0; i < databaseDump.length; ++i) {
var div = document.createElement('div');
var table = document.createElement('table');
var header = document.createElement('thead');
var body = document.createElement('tbody');
createDatabaseDumpTable(div, header, body, databaseDump[i]);
table.appendChild(header);
table.appendChild(body);
div.appendChild(table);
placeholder.appendChild(div);
}
}
function main() {
getDatabaseDump();
$('refresh-database-dump').addEventListener('click', getDatabaseDump);
}
document.addEventListener('DOMContentLoaded', main);
return DumpDatabase;
})();
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