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534 lines
16 KiB
JavaScript
534 lines
16 KiB
JavaScript
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is this file as it was released on
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* January 3, 2001.
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*
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* The Initial Developer of the Original Code is Jonas Sicking.
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* Portions created by Jonas Sicking are Copyright (C) 2000
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* Jonas Sicking. All Rights Reserved.
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*
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* Contributor(s):
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* Jonas Sicking <sicking@bigfoot.com> (Original Author)
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* Gervase Markham <gerv@gerv.net>
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* Heikki Toivonen <heikki@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*
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*/
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const XLinkNS = "http://www.w3.org/1999/xlink";
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const XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
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const XMLNS = "http://www.w3.org/XML/1998/namespace";
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const XHTMLNS = "http://www.w3.org/1999/xhtml";
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var gMetadataBundle;
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var gLangBundle;
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var gRegionBundle;
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var nodeView;
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var htmlMode = false;
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var onLink = false;
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var onImage = false;
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var onInsDel = false;
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var onQuote = false;
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var onMisc = false;
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var onTable = false;
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var onTitle = false;
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var onLang = false;
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function onLoad()
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{
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gMetadataBundle = document.getElementById("bundle_metadata");
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gLangBundle = document.getElementById("bundle_languages");
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gRegionBundle = document.getElementById("bundle_regions");
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showMetadataFor(window.arguments[0]);
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nodeView = window.arguments[0].ownerDocument.defaultView;
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}
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function showMetadataFor(elem)
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{
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// skip past non-element nodes
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while (elem && elem.nodeType != Node.ELEMENT_NODE)
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elem = elem.parentNode;
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if (!elem) {
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alert(gMetadataBundle.getString("unableToShowProps"));
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window.close();
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}
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if (elem.ownerDocument.getElementsByName && !elem.ownerDocument.namespaceURI)
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htmlMode = true;
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// htmllocalname is "" if it's not an html tag, or the name of the tag if it is.
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var htmllocalname = "";
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if (isHTMLElement(elem,"")) {
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htmllocalname = elem.localName.toLowerCase();
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}
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// We only look for images once
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checkForImage(elem, htmllocalname);
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// Walk up the tree, looking for elements of interest.
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// Each of them could be at a different level in the tree, so they each
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// need their own boolean to tell us to stop looking.
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while (elem && elem.nodeType == Node.ELEMENT_NODE) {
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if (!onLink) checkForLink(elem, htmllocalname);
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if (!onInsDel) checkForInsDel(elem, htmllocalname);
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if (!onQuote) checkForQuote(elem, htmllocalname);
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if (!onTable) checkForTable(elem, htmllocalname);
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if (!onTitle) checkForTitle(elem, htmllocalname);
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if (!onLang) checkForLang(elem, htmllocalname);
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elem = elem.parentNode;
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htmllocalname = "";
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if (isHTMLElement(elem,"")) {
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htmllocalname = elem.localName.toLowerCase();
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}
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}
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// Decide which sections to show
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var onMisc = onTable || onTitle || onLang;
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if (!onMisc) hideNode("misc-sec");
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if (!onLink) hideNode("link-sec");
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if (!onImage) hideNode("image-sec");
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if (!onInsDel) hideNode("insdel-sec");
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if (!onQuote) hideNode("quote-sec");
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// Fix the Misc section visibilities
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if (onMisc) {
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if (!onTable) hideNode("misc-tblsummary");
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if (!onLang) hideNode("misc-lang");
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if (!onTitle) hideNode("misc-title");
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}
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// Get rid of the "No properties" message. This is a backstop -
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// it should really never show, as long as nsContextMenu.js's
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// checking doesn't get broken.
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if (onLink || onImage || onInsDel || onQuote || onMisc)
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hideNode("no-properties")
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}
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function checkForImage(elem, htmllocalname)
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{
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var img;
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var imgType; // "img" = <img>
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// "object" = <object>
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// "input" = <input type=image>
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// "background" = css background (to be added later)
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if (htmllocalname === "img") {
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img = elem;
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imgType = "img";
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} else if (htmllocalname === "object" &&
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elem.type.substring(0,6) == "image/" &&
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elem.data) {
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img = elem;
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imgType = "object";
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} else if (htmllocalname === "input" &&
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elem.type.toUpperCase() == "IMAGE") {
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img = elem;
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imgType = "input";
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} else if (htmllocalname === "area" || htmllocalname === "a") {
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// Clicked in image map?
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var map = elem;
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while (map && map.nodeType == Node.ELEMENT_NODE && !isHTMLElement(map,"map") )
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map = map.parentNode;
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if (map && map.nodeType == Node.ELEMENT_NODE)
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img = getImageForMap(map);
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}
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if (img) {
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setInfo("image-url", img.src);
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if ("width" in img) {
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setInfo("image-width", img.width);
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setInfo("image-height", img.height);
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}
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else {
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setInfo("image-width", "");
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setInfo("image-height", "");
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}
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if (imgType == "img") {
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setInfo("image-desc", getAbsoluteURL(img.longDesc, img));
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} else {
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setInfo("image-desc", "");
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}
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onImage = true;
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}
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}
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function checkForLink(elem, htmllocalname)
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{
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if ((htmllocalname === "a" && elem.href != "") ||
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htmllocalname === "area") {
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setInfo("link-lang", convertLanguageCode(elem.getAttribute("hreflang")));
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setInfo("link-url", elem.href);
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setInfo("link-type", elem.getAttribute("type"));
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setInfo("link-rel", elem.getAttribute("rel"));
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setInfo("link-rev", elem.getAttribute("rev"));
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var target = elem.target;
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switch (target) {
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case "_top":
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setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
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break;
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case "_parent":
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setInfo("link-target", gMetadataBundle.getString("parentFrameText"));
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break;
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case "_blank":
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setInfo("link-target", gMetadataBundle.getString("newWindowText"));
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break;
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case "":
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case "_self":
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if (elem.ownerDocument != elem.ownerDocument.defaultView._content.document)
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setInfo("link-target", gMetadataBundle.getString("sameFrameText"));
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else
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setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
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break;
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default:
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setInfo("link-target", "\"" + target + "\"");
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}
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onLink = true;
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}
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else if (elem.getAttributeNS(XLinkNS,"href") != "") {
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setInfo("link-url", getAbsoluteURL(elem.getAttributeNS(XLinkNS,"href"),elem));
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setInfo("link-lang", "");
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setInfo("link-type", "");
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setInfo("link-rel", "");
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setInfo("link-rev", "");
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switch (elem.getAttributeNS(XLinkNS,"show")) {
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case "embed":
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setInfo("link-target", gMetadataBundle.getString("embeddedText"));
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break;
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case "new":
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setInfo("link-target", gMetadataBundle.getString("newWindowText"));
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break;
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case "":
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case "replace":
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if (elem.ownerDocument != elem.ownerDocument.defaultView._content.document)
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setInfo("link-target", gMetadataBundle.getString("sameFrameText"));
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else
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setInfo("link-target", gMetadataBundle.getString("sameWindowText"));
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break;
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default:
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setInfo("link-target", "");
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break;
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}
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onLink = true;
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}
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}
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function checkForInsDel(elem, htmllocalname)
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{
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if ((htmllocalname === "ins" || htmllocalname === "del") &&
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(elem.cite || elem.dateTime)) {
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setInfo("insdel-cite", getAbsoluteURL(elem.cite, elem));
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setInfo("insdel-date", elem.dateTime);
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onInsDel = true;
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}
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}
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function checkForQuote(elem, htmllocalname)
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{
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if ((htmllocalname === "q" || htmllocalname === "blockquote") && elem.cite) {
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setInfo("quote-cite", getAbsoluteURL(elem.cite, elem));
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onQuote = true;
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}
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}
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function checkForTable(elem, htmllocalname)
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{
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if (htmllocalname === "table" && elem.summary) {
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setInfo("misc-tblsummary", elem.summary);
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onTable = true;
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}
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}
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function checkForLang(elem, htmllocalname)
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{
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if ((htmllocalname && elem.lang) || elem.getAttributeNS(XMLNS, "lang")) {
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var abbr;
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if (htmllocalname && elem.lang)
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abbr = elem.lang;
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else
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abbr = elem.getAttributeNS(XMLNS, "lang");
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setInfo("misc-lang", convertLanguageCode(abbr));
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onLang = true;
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}
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}
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function checkForTitle(elem, htmllocalname)
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{
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if (htmllocalname && elem.title) {
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setInfo("misc-title", elem.title);
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onTitle = true;
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}
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}
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/*
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* Set text of node id to value
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* if value="" the node with specified id is hidden.
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* Node should be have one of these forms
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* <xul:label id="id-text" value=""/>
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* <xul:description id="id-text"/>
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*/
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function setInfo(id, value)
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{
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if (value == "") {
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hideNode(id);
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return;
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}
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var node = document.getElementById(id+"-text");
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if (node.namespaceURI == XULNS && node.localName == "label") {
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node.setAttribute("value",value);
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} else if (node.namespaceURI == XULNS && node.localName == "description") {
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while (node.hasChildNodes())
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node.removeChild(node.firstChild);
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node.appendChild(node.ownerDocument.createTextNode(value));
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}
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}
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// Hide node with specified id
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function hideNode(id)
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{
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var style = document.getElementById(id).getAttribute("style");
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document.getElementById(id).setAttribute("style", "display:none;" + style);
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}
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const nsIScriptSecurityManager = Components.interfaces.nsIScriptSecurityManager;
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// opens the link contained in the node's "value" attribute.
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function openLink(node)
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{
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var url = node.getAttribute("value");
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// Security-Critical: Only links to 'safe' protocols should be functional.
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// Specifically, javascript: and data: URLs must be made non-functional
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// here, because they will run with full privilege.
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var safeurls = /(^http(s)?:|^file:|^chrome:|^resource:|^mailbox:|^imap:|^news:|^about:|^mailto:|^ftp:|^gopher:)/i;
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if (url.search(safeurls) == 0) {
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var secMan = Components.classes["@mozilla.org/scriptsecuritymanager;1"].getService().
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QueryInterface(nsIScriptSecurityManager);
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try {
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secMan.checkLoadURIStr(nodeView._content.document.location,
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url, nsIScriptSecurityManager.STANDARD);
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} catch (e) {
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return;
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}
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nodeView._content.document.location = url;
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window.close();
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}
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}
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/*
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* Find <img> or <object> which uses an imagemap.
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* If more then one object is found we can't determine which one
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* was clicked.
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*
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* This code has to be changed once bug 1882 is fixed.
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* Once bug 72527 is fixed this code should use the .images collection.
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*/
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function getImageForMap(map)
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{
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var mapuri = "#" + map.getAttribute("name");
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var multipleFound = false;
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var img;
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var list = getHTMLElements(map.ownerDocument, "img");
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for (var i=0; i < list.length; i++) {
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if (list.item(i).getAttribute("usemap") == mapuri) {
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if (img) {
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multipleFound = true;
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break;
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} else {
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img = list.item(i);
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imgType = "img";
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}
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}
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}
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list = getHTMLElements(map.ownerDocument, "object");
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for (i = 0; i < list.length; i++) {
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if (list.item(i).getAttribute("usemap") == mapuri) {
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if (img) {
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multipleFound = true;
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break;
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} else {
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img = list.item(i);
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imgType = "object";
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}
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}
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}
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if (multipleFound)
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img = null;
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return img;
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}
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/*
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* Takes care of XMLBase and <base>
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* url is the possibly relative url.
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* node is the node where the url was given (needed for XMLBase)
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*
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* This function is called in many places as a workaround for bug 72524
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* Once bug 72522 is fixed this code should use the Node.baseURI attribute
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*
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* for node==null or url=="", empty string is returned
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*/
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function getAbsoluteURL(url, node)
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{
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if (!url || !node)
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return "";
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var urlArr = new Array(url);
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var doc = node.ownerDocument;
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if (node.nodeType == Node.ATTRIBUTE_NODE)
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node = node.ownerElement;
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while (node && node.nodeType == Node.ELEMENT_NODE) {
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if (node.getAttributeNS(XMLNS, "base") != "")
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urlArr.unshift(node.getAttributeNS(XMLNS, "base"));
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node = node.parentNode;
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}
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// Look for a <base>.
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var baseTags = getHTMLElements(doc,"base");
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if (baseTags && baseTags.length) {
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urlArr.unshift(baseTags[baseTags.length - 1].getAttribute("href"));
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}
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// resolve everything from bottom up, starting with document location
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var ioService = Components.classes["@mozilla.org/network/io-service;1"]
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.getService(Components.interfaces.nsIIOService);
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var URL = ioService.newURI(doc.location.href, null, null);
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for (var i=0; i<urlArr.length; i++) {
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URL.spec = URL.resolve(urlArr[i]);
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}
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return URL.spec;
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}
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function getHTMLElements(node, name)
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{
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if (htmlMode)
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return node.getElementsByTagName(name);
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return node.getElementsByTagNameNS(XHTMLNS, name);
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}
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// name should be in lower case
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function isHTMLElement(node, name)
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{
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if (node.nodeType != Node.ELEMENT_NODE)
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return false;
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if (htmlMode)
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return !name || node.localName.toLowerCase() == name;
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return (!name || node.localName == name) && node.namespaceURI == XHTMLNS;
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}
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// This function coded according to the spec at:
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// http://www.bath.ac.uk/~py8ieh/internet/discussion/metadata.txt
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function convertLanguageCode(abbr)
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{
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if (!abbr) return "";
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var result;
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var tokens = abbr.split("-");
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if (tokens[0] === "x" || tokens[0] === "i")
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{
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// x and i prefixes mean unofficial ones. So we upper-case the first
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// word and leave the rest.
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tokens.shift();
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if (tokens[0])
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{
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// Upper-case first letter
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result = tokens[0].substr(0, 1).toUpperCase() + tokens[0].substr(1);
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tokens.shift();
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if (tokens[0])
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{
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// Add on the rest as space-separated strings inside the brackets
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result += " (" + tokens.join(" ") + ")";
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}
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}
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}
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else
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{
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// Otherwise we treat the first as a lang, the second as a region
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// and the rest as strings.
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try
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{
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result = gLangBundle.getString(tokens[0]);
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}
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catch (e)
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{
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// Language not present in lang bundle
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result = tokens[0];
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}
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tokens.shift();
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if (tokens[0])
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{
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try
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{
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// We don't add it on to the result immediately
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// because we want to get the spacing right.
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tokens[0] = gRegionBundle.getString(tokens[0].toLowerCase());
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}
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catch (e)
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{
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// Region not present in region bundle
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}
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result += " (" + tokens.join(" ") + ")";
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}
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}
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return result;
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}
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