The Tor Browser: dom/tests/js/tables/changeCell.js@97036ab72558 (annotated)

dom/tests/js/tables/changeCell.js@97036ab72558 (annotated)

dom/tests/js/tables/changeCell.js

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 function findBody(node)
 {
   if (node.nodeType != Node.ELEMENT_NODE) {
     return null;
   }
   var children = node.childNodes;
   if (children == null) {
     return null;
   }
   var length = children.length;
   var child = null;
   var count = 0;
   while (count < length) {
     child = children[count];
     if (child.tagName == "BODY") {
       dump("BODY found");
       return child;
     }
     var body = findBody(child);
     if (null != body) {
       return body;
     }
     count++;
   }
   return null;
 }
 // Given the body element, find the first table element
 function findTable(body)
 {
   // XXX A better way to do this would be to use getElementsByTagName(), but
   // it isn't implemented yet...
   var children = body.childNodes
   if (children == null) {
     return null;
   }
   var length = children.length;
   var child = null;
   var count = 0;
   while (count < length) {
     child = children[count];
     if (child.nodeType == Node.ELEMENT_NODE) {
       if (child.tagName == "TABLE") {
         dump("TABLE found");
         break;
       }
     }
     count++;
   }
   return child;
 }
 // Given a table element, find the first table body
 function findTableBody(table)
 {
   // XXX A better way to do this would be to use getElementsByTagName(), but
   // it isn't implemented yet...
   var children = table.childNodes
   if (children == null) {
     return null;
   }
   var length = children.length;
   var child = null;
   var count = 0;
   while (count < length) {
     child = children[count];
     if (child.nodeType == Node.ELEMENT_NODE) {
       if (child.tagName == "TBODY") {
         break;
       }
     }
     count++;
   }
   return child;
 }
 // Change the text of the first table cell
 function changeCell(table)
 {
   // Get a table body
   var body = findTableBody(table)
   // The table body's first child is a table row
   var row = body.firstChild
   // The row's first child is a table cell
   var cell = row.firstChild
   // Get the cell's text
   var text = cell.firstChild
   // Append some text
   text.append(" NEW TEXT")
 }
 changeCell(findTable(findBody(document.documentElement)))