The Tor Browser: dom/tests/js/tables/changeCell.js@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 function findBody(node)

7 {

     8   if (node.nodeType != Node.ELEMENT_NODE) {

     9     return null;

    10   }

    11   var children = node.childNodes;

    12   if (children == null) {

    13     return null;

    14   }

    15   var length = children.length;

    16   var child = null;

    17   var count = 0;

    18   while (count < length) {

    19     child = children[count];

    20     if (child.tagName == "BODY") {

    21       dump("BODY found");

    22       return child;

    23     }

    24     var body = findBody(child);

    25     if (null != body) {

    26       return body;

    27     }

    28     count++;

    29   }

    30   return null;

    31 }

    33 // Given the body element, find the first table element

    34 function findTable(body)

    35 {

    36   // XXX A better way to do this would be to use getElementsByTagName(), but

    37   // it isn't implemented yet...

    38   var children = body.childNodes

    39   if (children == null) {

    40     return null;

    41   }

    42   var length = children.length;

    43   var child = null;

    44   var count = 0;

    45   while (count < length) {

    46     child = children[count];

    47     if (child.nodeType == Node.ELEMENT_NODE) {

    48       if (child.tagName == "TABLE") {

    49         dump("TABLE found");

    50         break;

    51       }

    52     }

    53     count++;

    54   }

    56   return child;

    57 }

    59 // Given a table element, find the first table body

    60 function findTableBody(table)

    61 {

    62   // XXX A better way to do this would be to use getElementsByTagName(), but

    63   // it isn't implemented yet...

    64   var children = table.childNodes

    65   if (children == null) {

    66     return null;

    67   }

    68   var length = children.length;

    69   var child = null;

    70   var count = 0;

    71   while (count < length) {

    72     child = children[count];

    73     if (child.nodeType == Node.ELEMENT_NODE) {

    74       if (child.tagName == "TBODY") {

    75         break;

    76       }

    77     }

    78     count++;

    79   }

    81   return child;

    82 }

    84 // Change the text of the first table cell

    85 function changeCell(table)

    86 {

    87   // Get a table body

    88   var body = findTableBody(table)

    90   // The table body's first child is a table row

    91   var row = body.firstChild

    93   // The row's first child is a table cell

    94   var cell = row.firstChild

    96   // Get the cell's text

    97   var text = cell.firstChild

    99   // Append some text

   100   text.append(" NEW TEXT")

   101 }

   103 changeCell(findTable(findBody(document.documentElement)))

The Tor Browser / file revision