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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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
var gMetadataBundle;
var gLangBundle;
var gRegionBundle;
var nodeView;
var htmlMode = false;
var onLink = false;
var onImage = false;
var onInsDel = false;
var onQuote = false;
var onMisc = false;
var onTable = false;
var onTitle = false;
var onLang = false;
function onLoad()
{
gMetadataBundle = document.getElementById("bundle_metadata");
gLangBundle = document.getElementById("bundle_languages");
gRegionBundle = document.getElementById("bundle_regions");
showMetadataFor(window.arguments[0]);
nodeView = window.arguments[0].ownerDocument.defaultView;
}
function showMetadataFor(elem)
{
// skip past non-element nodes
while (elem && elem.nodeType != Node.ELEMENT_NODE)
elem = elem.parentNode;
if (!elem) {
alert(gMetadataBundle.getString("unableToShowProps"));
window.close();
}
if (elem.ownerDocument.getElementsByName && !elem.ownerDocument.namespaceURI)
htmlMode = true;
// htmllocalname is "" if it's not an html tag, or the name of the tag if it is.
var htmllocalname = "";
if (isHTMLElement(elem,"")) {
htmllocalname = elem.localName.toLowerCase();
}
// We only look for images once
checkForImage(elem, htmllocalname);
// Walk up the tree, looking for elements of interest.
// Each of them could be at a different level in the tree, so they each
// need their own boolean to tell us to stop looking.
while (elem && elem.nodeType == Node.ELEMENT_NODE) {
htmllocalname = "";
if (isHTMLElement(elem,"")) {
htmllocalname = elem.localName.toLowerCase();
}
if (!onLink) checkForLink(elem, htmllocalname);
if (!onInsDel) checkForInsDel(elem, htmllocalname);
if (!onQuote) checkForQuote(elem, htmllocalname);
if (!onTable) checkForTable(elem, htmllocalname);
if (!onTitle) checkForTitle(elem, htmllocalname);
if (!onLang) checkForLang(elem, htmllocalname);
elem = elem.parentNode;
}
// Decide which sections to show
var onMisc = onTable || onTitle || onLang;
if (!onMisc) hideNode("misc-sec");
if (!onLink) hideNode("link-sec");
if (!onImage) hideNode("image-sec");
if (!onInsDel) hideNode("insdel-sec");
if (!onQuote) hideNode("quote-sec");
// Fix the Misc section visibilities
if (onMisc) {
if (!onTable) hideNode("misc-tblsummary");
if (!onLang) hideNode("misc-lang");
if (!onTitle) hideNode("misc-title");
}
// Get rid of the "No properties" message. This is a backstop -
// it should really never show, as long as nsContextMenu.js's
// checking doesn't get broken.
if (onLink || onImage || onInsDel || onQuote || onMisc)
hideNode("no-properties")
}
var cacheListener = {
onCacheEntryAvailable: function onCacheEntryAvailable(descriptor) {
if (descriptor) {
var kbSize = descriptor.dataSize / 1024;
kbSize = Math.round(kbSize * 100) / 100;
setInfo("image-filesize", gMetadataBundle.getFormattedString("imageSize",
[formatNumber(kbSize),
formatNumber(descriptor.dataSize)]));
} else {
setInfo("image-filesize", gMetadataBundle.getString("imageSizeUnknown"));
}
},
onCacheEntryCheck: function onCacheEntryCheck() {
return Ci.nsICacheEntryOpenCallback.ENTRY_WANTED;
}
};
function checkForImage(elem, htmllocalname)
{
var img;
var imgType; // "img" = <img>
// "object" = <object>
// "input" = <input type=image>
// "background" = css background (to be added later)
var ismap = false;
if (htmllocalname === "img") {
img = elem;
imgType = "img";
} else if (htmllocalname === "object" &&
elem.type.substring(0,6) == "image/" &&
elem.data) {
img = elem;
imgType = "object";
} else if (htmllocalname === "input" &&
elem.type.toUpperCase() == "IMAGE") {
img = elem;
imgType = "input";
} else if (htmllocalname === "area" || htmllocalname === "a") {
// Clicked in image map?
var map = elem;
ismap = true;
setAlt(map);
while (map && map.nodeType == Node.ELEMENT_NODE && !isHTMLElement(map,"map") )
map = map.parentNode;
if (map && map.nodeType == Node.ELEMENT_NODE) {
img = getImageForMap(map);
var imgLocalName = img && img.localName.toLowerCase();
if (imgLocalName == "img" || imgLocalName == "object") {
imgType = imgLocalName;
}
}
}
if (img) {
var imgURL = imgType == "object" ? img.data : img.src;
setInfo("image-url", imgURL);
const LoadContextInfo = Services.loadContextInfo;
var loadContextInfo = opener.gPrivate ? LoadContextInfo.private :
LoadContextInfo.default;
Services.cache2
.getService(Ci.nsICacheStorageService)
.diskCacheStorage(loadContextInfo, false)
.asyncOpenURI(NetUtil.newURI(imgURL), null,
Ci.nsICacheStorage.OPEN_READONLY, cacheListener);
if ("width" in img && img.width != "") {
setInfo("image-width", gMetadataBundle.getFormattedString("imageWidth", [formatNumber(img.width)]));
setInfo("image-height", gMetadataBundle.getFormattedString("imageHeight", [formatNumber(img.height)]));
}
else {
setInfo("image-width", "");
setInfo("image-height", "");
}
if (imgType == "img") {
setInfo("image-desc", img.longDesc);
} else {
setInfo("image-desc", "");
}
onImage = true;
}
if (!ismap) {
if (imgType == "img" || imgType == "input") {
setAlt(img);
} else {
hideNode("image-alt");
}
}
}
function checkForLink(elem, htmllocalname)
{
if ((htmllocalname === "a" && elem.href != "") ||
htmllocalname === "area") {
setLink(elem.href, elem.getAttribute("type"),
convertLanguageCode(elem.getAttribute("hreflang")),
elem.getAttribute("rel"), elem.getAttribute("rev"));
var target = elem.target;
switch (target) {
case "_top":
setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
break;
case "_parent":
setInfo("link-target", gMetadataBundle.getString("parentFrameText"));
break;
case "_blank":
setInfo("link-target", gMetadataBundle.getString("newWindowText"));
break;
case "":
case "_self":
if (elem.ownerDocument.defaultView) {
if (elem.ownerDocument != elem.ownerDocument.defaultView.content.document)
setInfo("link-target", gMetadataBundle.getString("sameFrameText"));
else
setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
} else {
hideNode("link-target");
}
break;
default:
setInfo("link-target", "\"" + target + "\"");
}
onLink = true;
}
else if (elem.namespaceURI == MathMLNS && elem.hasAttribute("href")) {
setLink(makeHrefAbsolute(elem.getAttribute("href"), elem));
setInfo("link-target", "");
onLink = true;
}
else if (elem.getAttributeNS(XLinkNS, "href")) {
setLink(makeHrefAbsolute(elem.getAttributeNS(XLinkNS, "href"), elem));
switch (elem.getAttributeNS(XLinkNS,"show")) {
case "embed":
setInfo("link-target", gMetadataBundle.getString("embeddedText"));
break;
case "new":
setInfo("link-target", gMetadataBundle.getString("newWindowText"));
break;
case null:
case "":
case "replace":
if (elem.ownerDocument != elem.ownerDocument.defaultView.content.document)
setInfo("link-target", gMetadataBundle.getString("sameFrameText"));
else
setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
break;
default:
setInfo("link-target", "");
break;
}
onLink = true;
}
}
function checkForInsDel(elem, htmllocalname)
{
if ((htmllocalname === "ins" || htmllocalname === "del") &&
(elem.cite || elem.dateTime)) {
setInfo("insdel-cite", elem.cite);
setInfo("insdel-date", elem.dateTime);
onInsDel = true;
}
}
function checkForQuote(elem, htmllocalname)
{
if ((htmllocalname === "q" || htmllocalname === "blockquote") && elem.cite) {
setInfo("quote-cite", elem.cite);
onQuote = true;
}
}
function checkForTable(elem, htmllocalname)
{
if (htmllocalname === "table" && elem.summary) {
setInfo("misc-tblsummary", elem.summary);
onTable = true;
}
}
function checkForLang(elem, htmllocalname)
{
if ((htmllocalname && elem.lang) || elem.getAttributeNS(XMLNS, "lang")) {
var abbr;
if (htmllocalname && elem.lang)
abbr = elem.lang;
else
abbr = elem.getAttributeNS(XMLNS, "lang");
setInfo("misc-lang", convertLanguageCode(abbr));
onLang = true;
}
}
function checkForTitle(elem, htmllocalname)
{
if (htmllocalname && elem.title) {
setInfo("misc-title", elem.title);
onTitle = true;
}
}
/*
* Set five link properties at once.
* All parameters are optional.
*/
function setLink(url, lang, type, rel, rev)
{
setInfo("link-url", url);
setInfo("link-type", type);
setInfo("link-lang", lang);
setInfo("link-rel", rel);
setInfo("link-rev", rev);
}
/*
* Set text of node id to value
* if value="" the node with specified id is hidden.
* Node should be have one of these forms
* <xul:label id="id-text" value=""/>
* <xul:description id="id-text"/>
*/
function setInfo(id, value)
{
if (!value) {
hideNode(id);
return;
}
var node = document.getElementById(id+"-text");
if (node.namespaceURI == XULNS && node.localName == "label" ||
(node.namespaceURI == XULNS && node.localName == "textbox")) {
node.setAttribute("value",value);
} else if (node.namespaceURI == XULNS && node.localName == "description") {
node.textContent = value;
}
}
// Hide node with specified id
function hideNode(id)
{
var style = document.getElementById(id).getAttribute("style");
document.getElementById(id).setAttribute("style", "display:none;" + style);
}
/*
* Find <img> or <object> which uses an imagemap.
* If more then one object is found we can't determine which one
* was clicked.
*
*/
function getImageForMap(map)
{
var mapuri = "#" + map.getAttribute("name");
var multipleFound = false;
var img;
var list = getHTMLElements(map.ownerDocument, "img");
for (var i=0; i < list.length; i++) {
if (list.item(i).getAttribute("usemap") == mapuri) {
if (img) {
multipleFound = true;
break;
} else {
img = list.item(i);
imgType = "img";
}
}
}
list = getHTMLElements(map.ownerDocument, "object");
for (i = 0; i < list.length; i++) {
if (list.item(i).getAttribute("usemap") == mapuri) {
if (img) {
multipleFound = true;
break;
} else {
img = list.item(i);
imgType = "object";
}
}
}
if (multipleFound)
img = null;
return img;
}
function getHTMLElements(node, name)
{
if (htmlMode)
return node.getElementsByTagName(name);
return node.getElementsByTagNameNS(XHTMLNS, name);
}
// name should be in lower case
function isHTMLElement(node, name)
{
if (node.nodeType != Node.ELEMENT_NODE)
return false;
if (htmlMode)
return !name || node.localName.toLowerCase() == name;
return (!name || node.localName == name) && node.namespaceURI == XHTMLNS;
}
// This function coded according to the spec at:
function convertLanguageCode(abbr)
{
if (!abbr) return "";
var result;
var region = "";
var tokens = abbr.split("-");
var language = tokens.shift();
if (language == "x" || language == "i")
{
// x and i prefixes mean unofficial ones. So we proper-case the next
// word and leave the rest.
if (tokens.length > 0)
{
// Upper-case first letter
language = tokens[0].substr(0, 1).toUpperCase() + tokens[0].substr(1);
tokens.shift();
// Add on the rest as space-separated strings inside the brackets
region = tokens.join(" ");
}
}
else
{
// Otherwise we treat the first as a lang, the second as a region
// and the rest as strings.
try
{
language = gLangBundle.getString(language.toLowerCase());
}
catch (e)
{
}
if (tokens.length > 0)
{
try
{
tokens[0] = gRegionBundle.getString(tokens[0].toLowerCase());
}
catch (e)
{
}
region = tokens.join(" ");
}
}
if (region) {
result = gMetadataBundle.getFormattedString("languageRegionFormat",
[language, region]);
} else {
result = language;
}
return result;
}
function setAlt(elem) {
var altText = document.getElementById("image-alt-text");
if (elem.hasAttribute("alt")) {
if (elem.alt != "") {
altText.value = elem.alt;
altText.setAttribute("style","font-style:inherit");
} else {
altText.value = gMetadataBundle.getString("altTextBlank");
altText.setAttribute("style","font-style:italic");
}
} else {
altText.value = gMetadataBundle.getString("altTextMissing");
altText.setAttribute("style","font-style:italic");
}
}
function formatNumber(number)
{
return (+number).toLocaleString(); // coerce number to a numeric value before calling toLocaleString()
}
function makeHrefAbsolute(href, elem)
{
try {
var baseURI = NetUtil.newURI(elem.baseURI, elem.ownerDocument.characterSet);
href = NetUtil.newURI(href, elem.ownerDocument.characterSet, baseURI).spec;
} catch (e) {
}
return href;
}