move browser to webbrowser/

1 files changed, 1286 insertions, 0 deletions

diff --git a/webbrowser/components/pageinfo/pageInfo.js b/webbrowser/components/pageinfo/pageInfo.js
new file mode 100644
index 0000000..600174a
--- /dev/null
+++ b/webbrowser/components/pageinfo/pageInfo.js
@@ -0,0 +1,1286 @@
+/* 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/. */
+
+var Cu = Components.utils;
+Cu.import("resource://gre/modules/LoadContextInfo.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+//******** define a js object to implement nsITreeView
+function pageInfoTreeView(treeid, copycol)
+{
+  // copycol is the index number for the column that we want to add to
+  // the copy-n-paste buffer when the user hits accel-c
+  this.treeid = treeid;
+  this.copycol = copycol;
+  this.rows = 0;
+  this.tree = null;
+  this.data = [ ];
+  this.selection = null;
+  this.sortcol = -1;
+  this.sortdir = false;
+}
+
+pageInfoTreeView.prototype = {
+  set rowCount(c) { throw "rowCount is a readonly property"; },
+  get rowCount() { return this.rows; },
+
+  setTree: function(tree)
+  {
+    this.tree = tree;
+  },
+
+  getCellText: function(row, column)
+  {
+    // row can be null, but js arrays are 0-indexed.
+    // colidx cannot be null, but can be larger than the number
+    // of columns in the array. In this case it's the fault of
+    // whoever typoed while calling this function.
+    return this.data[row][column.index] || "";
+  },
+
+  setCellValue: function(row, column, value)
+  {
+  },
+
+  setCellText: function(row, column, value)
+  {
+    this.data[row][column.index] = value;
+  },
+
+  addRow: function(row)
+  {
+    this.rows = this.data.push(row);
+    this.rowCountChanged(this.rows - 1, 1);
+    if (this.selection.count == 0 && this.rowCount && !gImageElement)
+      this.selection.select(0);
+  },
+
+  rowCountChanged: function(index, count)
+  {
+    this.tree.rowCountChanged(index, count);
+  },
+
+  invalidate: function()
+  {
+    this.tree.invalidate();
+  },
+
+  clear: function()
+  {
+    if (this.tree)
+      this.tree.rowCountChanged(0, -this.rows);
+    this.rows = 0;
+    this.data = [ ];
+  },
+
+  handleCopy: function(row)
+  {
+    return (row < 0 || this.copycol < 0) ? "" : (this.data[row][this.copycol] || "");
+  },
+
+  performActionOnRow: function(action, row)
+  {
+    if (action == "copy") {
+      var data = this.handleCopy(row)
+      this.tree.treeBody.parentNode.setAttribute("copybuffer", data);
+    }
+  },
+
+  onPageMediaSort : function(columnname)
+  {
+    var tree = document.getElementById(this.treeid);
+    var treecol = tree.columns.getNamedColumn(columnname);
+
+    this.sortdir =
+      gTreeUtils.sort(
+        tree,
+        this,
+        this.data,
+        treecol.index,
+        function textComparator(a, b) { return a.toLowerCase().localeCompare(b.toLowerCase()); },
+        this.sortcol,
+        this.sortdir
+      );
+
+    this.sortcol = treecol.index;
+  },
+
+  getRowProperties: function(row) { return ""; },
+  getCellProperties: function(row, column) { return ""; },
+  getColumnProperties: function(column) { return ""; },
+  isContainer: function(index) { return false; },
+  isContainerOpen: function(index) { return false; },
+  isSeparator: function(index) { return false; },
+  isSorted: function() { },
+  canDrop: function(index, orientation) { return false; },
+  drop: function(row, orientation) { return false; },
+  getParentIndex: function(index) { return 0; },
+  hasNextSibling: function(index, after) { return false; },
+  getLevel: function(index) { return 0; },
+  getImageSrc: function(row, column) { },
+  getProgressMode: function(row, column) { },
+  getCellValue: function(row, column) { },
+  toggleOpenState: function(index) { },
+  cycleHeader: function(col) { },
+  selectionChanged: function() { },
+  cycleCell: function(row, column) { },
+  isEditable: function(row, column) { return false; },
+  isSelectable: function(row, column) { return false; },
+  performAction: function(action) { },
+  performActionOnCell: function(action, row, column) { }
+};
+
+// mmm, yummy. global variables.
+var gWindow = null;
+var gDocument = null;
+var gImageElement = null;
+
+// column number to help using the data array
+const COL_IMAGE_ADDRESS = 0;
+const COL_IMAGE_TYPE    = 1;
+const COL_IMAGE_SIZE    = 2;
+const COL_IMAGE_ALT     = 3;
+const COL_IMAGE_COUNT   = 4;
+const COL_IMAGE_NODE    = 5;
+const COL_IMAGE_BG      = 6;
+
+// column number to copy from, second argument to pageInfoTreeView's constructor
+const COPYCOL_NONE = -1;
+const COPYCOL_META_CONTENT = 1;
+const COPYCOL_IMAGE = COL_IMAGE_ADDRESS;
+
+// one nsITreeView for each tree in the window
+var gMetaView = new pageInfoTreeView('metatree', COPYCOL_META_CONTENT);
+var gImageView = new pageInfoTreeView('imagetree', COPYCOL_IMAGE);
+
+gImageView.getCellProperties = function(row, col) {
+  var data = gImageView.data[row];
+  var item = gImageView.data[row][COL_IMAGE_NODE];
+  var props = "";
+  if (!checkProtocol(data) ||
+      item instanceof HTMLEmbedElement ||
+      (item instanceof HTMLObjectElement && !item.type.startsWith("image/")))
+    props += "broken";
+
+  if (col.element.id == "image-address")
+    props += " ltr";
+
+  return props;
+};
+
+gImageView.getCellText = function(row, column) {
+  var value = this.data[row][column.index];
+  if (column.index == COL_IMAGE_SIZE) {
+    if (value == -1) {
+      return gStrings.unknown;
+    } else {
+      var kbSize = Number(Math.round(value / 1024 * 100) / 100);
+      return gBundle.getFormattedString("mediaFileSize", [kbSize]);
+    }
+  }
+  return value || "";
+};
+
+gImageView.onPageMediaSort = function(columnname) {
+  var tree = document.getElementById(this.treeid);
+  var treecol = tree.columns.getNamedColumn(columnname);
+
+  var comparator;
+  if (treecol.index == COL_IMAGE_SIZE || treecol.index == COL_IMAGE_COUNT) {
+    comparator = function numComparator(a, b) { return a - b; };
+  } else {
+    comparator = function textComparator(a, b) { return a.toLowerCase().localeCompare(b.toLowerCase()); };
+  }
+
+  this.sortdir =
+    gTreeUtils.sort(
+      tree,
+      this,
+      this.data,
+      treecol.index,
+      comparator,
+      this.sortcol,
+      this.sortdir
+    );
+
+  this.sortcol = treecol.index;
+};
+
+var gImageHash = { };
+
+// localized strings (will be filled in when the document is loaded)
+// this isn't all of them, these are just the ones that would otherwise have been loaded inside a loop
+var gStrings = { };
+var gBundle;
+
+const PERMISSION_CONTRACTID     = "@mozilla.org/permissionmanager;1";
+const PREFERENCES_CONTRACTID    = "@mozilla.org/preferences-service;1";
+const ATOM_CONTRACTID           = "@mozilla.org/atom-service;1";
+
+// a number of services I'll need later
+// the cache services
+const nsICacheStorageService = Components.interfaces.nsICacheStorageService;
+const nsICacheStorage = Components.interfaces.nsICacheStorage;
+const cacheService = Components.classes["@mozilla.org/netwerk/cache-storage-service;1"].getService(nsICacheStorageService);
+
+var loadContextInfo = LoadContextInfo.fromLoadContext(
+  window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+        .getInterface(Components.interfaces.nsIWebNavigation)
+        .QueryInterface(Components.interfaces.nsILoadContext), false);
+var diskStorage = cacheService.diskCacheStorage(loadContextInfo, false);
+
+const nsICookiePermission  = Components.interfaces.nsICookiePermission;
+const nsIPermissionManager = Components.interfaces.nsIPermissionManager;
+
+const nsICertificateDialogs = Components.interfaces.nsICertificateDialogs;
+const CERTIFICATEDIALOGS_CONTRACTID = "@mozilla.org/nsCertificateDialogs;1"
+
+// clipboard helper
+function getClipboardHelper() {
+    try {
+        return Components.classes["@mozilla.org/widget/clipboardhelper;1"].getService(Components.interfaces.nsIClipboardHelper);
+    } catch(e) {
+        // do nothing, later code will handle the error
+    }
+}
+const gClipboardHelper = getClipboardHelper();
+
+// Interface for image loading content
+const nsIImageLoadingContent = Components.interfaces.nsIImageLoadingContent;
+
+// namespaces, don't need all of these yet...
+const XLinkNS  = "http://www.w3.org/1999/xlink";
+const XULNS    = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+const XMLNS    = "http://www.w3.org/XML/1998/namespace";
+const XHTMLNS  = "http://www.w3.org/1999/xhtml";
+const XHTML2NS = "http://www.w3.org/2002/06/xhtml2"
+
+const XHTMLNSre  = "^http\:\/\/www\.w3\.org\/1999\/xhtml$";
+const XHTML2NSre = "^http\:\/\/www\.w3\.org\/2002\/06\/xhtml2$";
+const XHTMLre = RegExp(XHTMLNSre + "|" + XHTML2NSre, "");
+
+/* Overlays register functions here.
+ * These arrays are used to hold callbacks that Page Info will call at
+ * various stages. Use them by simply appending a function to them.
+ * For example, add a function to onLoadRegistry by invoking
+ *   "onLoadRegistry.push(XXXLoadFunc);"
+ * The XXXLoadFunc should be unique to the overlay module, and will be
+ * invoked as "XXXLoadFunc();"
+ */
+
+// These functions are called to build the data displayed in the Page
+// Info window. The global variables gDocument and gWindow are set.
+var onLoadRegistry = [ ];
+
+// These functions are called to remove old data still displayed in
+// the window when the document whose information is displayed
+// changes. For example, at this time, the list of images of the Media
+// tab is cleared.
+var onResetRegistry = [ ];
+
+// These are called once for each subframe of the target document and
+// the target document itself. The frame is passed as an argument.
+var onProcessFrame = [ ];
+
+// These functions are called once for each element (in all subframes, if any)
+// in the target document. The element is passed as an argument.
+var onProcessElement = [ ];
+
+// These functions are called once when all the elements in all of the target
+// document (and all of its subframes, if any) have been processed
+var onFinished = [ ];
+
+// These functions are called once when the Page Info window is closed.
+var onUnloadRegistry = [ ];
+
+// These functions are called once when an image preview is shown.
+var onImagePreviewShown = [ ];
+
+/* Called when PageInfo window is loaded.  Arguments are:
+ *  window.arguments[0] - (optional) an object consisting of
+ *                         - doc: (optional) document to use for source. if not provided,
+ *                                the calling window's document will be used
+ *                         - initialTab: (optional) id of the inital tab to display
+ */
+function onLoadPageInfo()
+{
+  gBundle = document.getElementById("pageinfobundle");
+  gStrings.unknown = gBundle.getString("unknown");
+  gStrings.notSet = gBundle.getString("notset");
+  gStrings.mediaImg = gBundle.getString("mediaImg");
+  gStrings.mediaBGImg = gBundle.getString("mediaBGImg");
+  gStrings.mediaBorderImg = gBundle.getString("mediaBorderImg");
+  gStrings.mediaListImg = gBundle.getString("mediaListImg");
+  gStrings.mediaCursor = gBundle.getString("mediaCursor");
+  gStrings.mediaObject = gBundle.getString("mediaObject");
+  gStrings.mediaEmbed = gBundle.getString("mediaEmbed");
+  gStrings.mediaLink = gBundle.getString("mediaLink");
+  gStrings.mediaInput = gBundle.getString("mediaInput");
+  gStrings.mediaVideo = gBundle.getString("mediaVideo");
+  gStrings.mediaAudio = gBundle.getString("mediaAudio");
+
+  var args = "arguments" in window &&
+             window.arguments.length >= 1 &&
+             window.arguments[0];
+
+  if (!args || !args.doc) {
+    gWindow = window.opener.content;
+    gDocument = gWindow.document;
+  }
+
+  // init media view
+  var imageTree = document.getElementById("imagetree");
+  imageTree.view = gImageView;
+
+  /* Select the requested tab, if the name is specified */
+  loadTab(args);
+  Components.classes["@mozilla.org/observer-service;1"]
+            .getService(Components.interfaces.nsIObserverService)
+            .notifyObservers(window, "page-info-dialog-loaded", null);
+  
+  // Make sure the page info window gets focus even if a doorhanger might
+  // otherwise (async) steal it.
+  window.focus();
+}
+
+function loadPageInfo()
+{
+  var titleFormat = gWindow != gWindow.top ? "pageInfo.frame.title"
+                                           : "pageInfo.page.title";
+  document.title = gBundle.getFormattedString(titleFormat, [gDocument.location]);
+
+  document.getElementById("main-window").setAttribute("relatedUrl", gDocument.location);
+
+  // do the easy stuff first
+  makeGeneralTab();
+
+  // and then the hard stuff
+  makeTabs(gDocument, gWindow);
+
+  initFeedTab();
+  onLoadPermission(gDocument.nodePrincipal);
+
+  /* Call registered overlay init functions */
+  onLoadRegistry.forEach(function(func) { func(); });
+}
+
+function resetPageInfo(args)
+{
+  /* Reset Meta tags part */
+  gMetaView.clear();
+
+  /* Reset Media tab */
+  var mediaTab = document.getElementById("mediaTab");
+  if (!mediaTab.hidden) {
+    Components.classes["@mozilla.org/observer-service;1"]
+              .getService(Components.interfaces.nsIObserverService)
+              .removeObserver(imagePermissionObserver, "perm-changed");
+    mediaTab.hidden = true;
+  }
+  gImageView.clear();
+  gImageHash = {};
+
+  /* Reset Feeds Tab */
+  var feedListbox = document.getElementById("feedListbox");
+  while (feedListbox.firstChild)
+    feedListbox.removeChild(feedListbox.firstChild);
+
+  /* Call registered overlay reset functions */
+  onResetRegistry.forEach(function(func) { func(); });
+
+  /* Rebuild the data */
+  loadTab(args);
+}
+
+function onUnloadPageInfo()
+{
+  // Remove the observer, only if there is at least 1 image.
+  if (!document.getElementById("mediaTab").hidden) {
+    Components.classes["@mozilla.org/observer-service;1"]
+              .getService(Components.interfaces.nsIObserverService)
+              .removeObserver(imagePermissionObserver, "perm-changed");
+  }
+
+  /* Call registered overlay unload functions */
+  onUnloadRegistry.forEach(function(func) { func(); });
+}
+
+function doHelpButton()
+{
+  const helpTopics = {
+    "generalPanel":  "pageinfo_general",
+    "mediaPanel":    "pageinfo_media",
+    "feedPanel":     "pageinfo_feed",
+    "permPanel":     "pageinfo_permissions",
+    "securityPanel": "pageinfo_security"
+  };
+
+  var deck  = document.getElementById("mainDeck");
+  var helpdoc = helpTopics[deck.selectedPanel.id] || "pageinfo_general";
+  openHelpLink(helpdoc);
+}
+
+function showTab(id)
+{
+  var deck  = document.getElementById("mainDeck");
+  var pagel = document.getElementById(id + "Panel");
+  deck.selectedPanel = pagel;
+}
+
+function loadTab(args)
+{
+  if (args && args.doc) {
+    gDocument = args.doc;
+    gWindow = gDocument.defaultView;
+  }
+
+  gImageElement = args && args.imageElement;
+
+  /* Load the page info */
+  loadPageInfo();
+
+  var initialTab = (args && args.initialTab) || "generalTab";
+  var radioGroup = document.getElementById("viewGroup");
+  initialTab = document.getElementById(initialTab) || document.getElementById("generalTab");
+  radioGroup.selectedItem = initialTab;
+  radioGroup.selectedItem.doCommand();
+  radioGroup.focus();
+}
+
+function onClickMore()
+{
+  var radioGrp = document.getElementById("viewGroup");
+  var radioElt = document.getElementById("securityTab");
+  radioGrp.selectedItem = radioElt;
+  showTab('security');
+}
+
+function toggleGroupbox(id)
+{
+  var elt = document.getElementById(id);
+  if (elt.hasAttribute("closed")) {
+    elt.removeAttribute("closed");
+    if (elt.flexWhenOpened)
+      elt.flex = elt.flexWhenOpened;
+  }
+  else {
+    elt.setAttribute("closed", "true");
+    if (elt.flex) {
+      elt.flexWhenOpened = elt.flex;
+      elt.flex = 0;
+    }
+  }
+}
+
+function openCacheEntry(key, cb)
+{
+  var checkCacheListener = {
+    onCacheEntryCheck: function(entry, appCache) {
+      return Components.interfaces.nsICacheEntryOpenCallback.ENTRY_WANTED;
+    },
+    onCacheEntryAvailable: function(entry, isNew, appCache, status) {
+      cb(entry);
+    },
+    get mainThreadOnly() { return true; }
+  };
+  diskStorage.asyncOpenURI(Services.io.newURI(key, null, null), "", nsICacheStorage.OPEN_READONLY, checkCacheListener);
+}
+
+function makeGeneralTab()
+{
+  var title = (gDocument.title) ? gBundle.getFormattedString("pageTitle", [gDocument.title]) : gBundle.getString("noPageTitle");
+  document.getElementById("titletext").value = title;
+
+  var url = gDocument.location.toString();
+  setItemValue("urltext", url);
+
+  var referrer = ("referrer" in gDocument && gDocument.referrer);
+  setItemValue("refertext", referrer);
+
+  var mode = ("compatMode" in gDocument && gDocument.compatMode == "BackCompat") ? "generalQuirksMode" : "generalStrictMode";
+  document.getElementById("modetext").value = gBundle.getString(mode);
+
+  // find out the mime type
+  var mimeType = gDocument.contentType;
+  setItemValue("typetext", mimeType);
+
+  // get the document characterset
+  var encoding = gDocument.characterSet;
+  document.getElementById("encodingtext").value = encoding;
+
+  // get the meta tags
+  var metaNodes = gDocument.getElementsByTagName("meta");
+  var length = metaNodes.length;
+
+  var metaGroup = document.getElementById("metaTags");
+  if (!length)
+    metaGroup.collapsed = true;
+  else {
+    var metaTagsCaption = document.getElementById("metaTagsCaption");
+    if (length == 1)
+      metaTagsCaption.label = gBundle.getString("generalMetaTag");
+    else
+      metaTagsCaption.label = gBundle.getFormattedString("generalMetaTags", [length]);
+    var metaTree = document.getElementById("metatree");
+    metaTree.view = gMetaView;
+
+    for (var i = 0; i < length; i++)
+      gMetaView.addRow([metaNodes[i].name || metaNodes[i].httpEquiv, metaNodes[i].content]);
+
+    metaGroup.collapsed = false;
+  }
+
+  // get the date of last modification
+  var modifiedText = formatDate(gDocument.lastModified, gStrings.notSet);
+  document.getElementById("modifiedtext").value = modifiedText;
+
+  // get cache info
+  var cacheKey = url.replace(/#.*$/, "");
+  openCacheEntry(cacheKey, function(cacheEntry) {
+    var sizeText;
+    if (cacheEntry) {
+      var pageSize = cacheEntry.dataSize;
+      var kbSize = formatNumber(Math.round(pageSize / 1024 * 100) / 100);
+      sizeText = gBundle.getFormattedString("generalSize", [kbSize, formatNumber(pageSize)]);
+    }
+    setItemValue("sizetext", sizeText);
+  });
+
+  securityOnLoad();
+}
+
+//******** Generic Build-a-tab
+// Assumes the views are empty. Only called once to build the tabs, and
+// does so by farming the task off to another thread via setTimeout().
+// The actual work is done with a TreeWalker that calls doGrab() once for
+// each element node in the document.
+
+var gFrameList = [ ];
+
+function makeTabs(aDocument, aWindow)
+{
+  goThroughFrames(aDocument, aWindow);
+  processFrames();
+}
+
+function goThroughFrames(aDocument, aWindow)
+{
+  gFrameList.push(aDocument);
+  if (aWindow && aWindow.frames.length > 0) {
+    var num = aWindow.frames.length;
+    for (var i = 0; i < num; i++)
+      goThroughFrames(aWindow.frames[i].document, aWindow.frames[i]);  // recurse through the frames
+  }
+}
+
+function processFrames()
+{
+  if (gFrameList.length) {
+    var doc = gFrameList[0];
+    onProcessFrame.forEach(function(func) { func(doc); });
+    var iterator = doc.createTreeWalker(doc, NodeFilter.SHOW_ELEMENT, grabAll);
+    gFrameList.shift();
+    setTimeout(doGrab, 10, iterator);
+    onFinished.push(selectImage);
+  }
+  else
+    onFinished.forEach(function(func) { func(); });
+}
+
+function doGrab(iterator)
+{
+  for (var i = 0; i < 500; ++i)
+    if (!iterator.nextNode()) {
+      processFrames();
+      return;
+    }
+
+  setTimeout(doGrab, 10, iterator);
+}
+
+function addImage(url, type, alt, elem, isBg)
+{
+  if (!url)
+    return;
+
+  if (!gImageHash.hasOwnProperty(url))
+    gImageHash[url] = { };
+  if (!gImageHash[url].hasOwnProperty(type))
+    gImageHash[url][type] = { };
+  if (!gImageHash[url][type].hasOwnProperty(alt)) {
+    gImageHash[url][type][alt] = gImageView.data.length;
+    var row = [url, type, -1, alt, 1, elem, isBg];
+    gImageView.addRow(row);
+
+    // Fill in cache data asynchronously
+    openCacheEntry(url, function(cacheEntry) {
+      // The data at row[2] corresponds to the data size.
+      if (cacheEntry) {
+        row[2] = cacheEntry.dataSize;
+        // Invalidate the row to trigger a repaint.
+        gImageView.tree.invalidateRow(gImageView.data.indexOf(row));
+      }
+    });
+
+    // Add the observer, only once.
+    if (gImageView.data.length == 1) {
+      document.getElementById("mediaTab").hidden = false;
+      Components.classes["@mozilla.org/observer-service;1"]
+                .getService(Components.interfaces.nsIObserverService)
+                .addObserver(imagePermissionObserver, "perm-changed", false);
+    }
+  }
+  else {
+    var i = gImageHash[url][type][alt];
+    gImageView.data[i][COL_IMAGE_COUNT]++;
+    if (elem == gImageElement)
+      gImageView.data[i][COL_IMAGE_NODE] = elem;
+  }
+}
+
+function grabAll(elem)
+{
+  // check for images defined in CSS (e.g. background, borders), any node may have multiple
+  var computedStyle = elem.ownerDocument.defaultView.getComputedStyle(elem, "");
+
+  if (computedStyle) {
+    var addImgFunc = function (label, val) {
+      if (val.primitiveType == CSSPrimitiveValue.CSS_URI) {
+        addImage(val.getStringValue(), label, gStrings.notSet, elem, true);
+      }
+      else if (val.primitiveType == CSSPrimitiveValue.CSS_STRING) {
+        // This is for -moz-image-rect.
+        // TODO: Reimplement once bug 714757 is fixed
+        var strVal = val.getStringValue();
+        if (strVal.search(/^.*url\(\"?/) > -1) {
+          url = strVal.replace(/^.*url\(\"?/,"").replace(/\"?\).*$/,"");
+          addImage(url, label, gStrings.notSet, elem, true);
+        }
+      }
+      else if (val.cssValueType == CSSValue.CSS_VALUE_LIST) {
+        // recursively resolve multiple nested CSS value lists
+        for (var i = 0; i < val.length; i++)
+          addImgFunc(label, val.item(i));
+      }
+    };
+
+    addImgFunc(gStrings.mediaBGImg, computedStyle.getPropertyCSSValue("background-image"));
+    addImgFunc(gStrings.mediaBorderImg, computedStyle.getPropertyCSSValue("border-image-source"));
+    addImgFunc(gStrings.mediaListImg, computedStyle.getPropertyCSSValue("list-style-image"));
+    addImgFunc(gStrings.mediaCursor, computedStyle.getPropertyCSSValue("cursor"));
+  }
+
+  // one swi^H^H^Hif-else to rule them all
+  if (elem instanceof HTMLImageElement)
+    addImage(elem.src, gStrings.mediaImg,
+             (elem.hasAttribute("alt")) ? elem.alt : gStrings.notSet, elem, false);
+  else if (elem instanceof SVGImageElement) {
+    try {
+      // Note: makeURLAbsolute will throw if either the baseURI is not a valid URI
+      //       or the URI formed from the baseURI and the URL is not a valid URI
+      var href = makeURLAbsolute(elem.baseURI, elem.href.baseVal);
+      addImage(href, gStrings.mediaImg, "", elem, false);
+    } catch (e) { }
+  }
+  else if (elem instanceof HTMLVideoElement) {
+    addImage(elem.currentSrc, gStrings.mediaVideo, "", elem, false);
+  }
+  else if (elem instanceof HTMLAudioElement) {
+    addImage(elem.currentSrc, gStrings.mediaAudio, "", elem, false);
+  }
+  else if (elem instanceof HTMLLinkElement) {
+    if (elem.rel && /\bicon\b/i.test(elem.rel))
+      addImage(elem.href, gStrings.mediaLink, "", elem, false);
+  }
+  else if (elem instanceof HTMLInputElement || elem instanceof HTMLButtonElement) {
+    if (elem.type.toLowerCase() == "image")
+      addImage(elem.src, gStrings.mediaInput,
+               (elem.hasAttribute("alt")) ? elem.alt : gStrings.notSet, elem, false);
+  }
+  else if (elem instanceof HTMLObjectElement)
+    addImage(elem.data, gStrings.mediaObject, getValueText(elem), elem, false);
+  else if (elem instanceof HTMLEmbedElement)
+    addImage(elem.src, gStrings.mediaEmbed, "", elem, false);
+
+  onProcessElement.forEach(function(func) { func(elem); });
+
+  return NodeFilter.FILTER_ACCEPT;
+}
+
+//******** Link Stuff
+function openURL(target)
+{
+  var url = target.parentNode.childNodes[2].value;
+  window.open(url, "_blank", "chrome");
+}
+
+function onBeginLinkDrag(event,urlField,descField)
+{
+  if (event.originalTarget.localName != "treechildren")
+    return;
+
+  var tree = event.target;
+  if (!("treeBoxObject" in tree))
+    tree = tree.parentNode;
+
+  var row = tree.treeBoxObject.getRowAt(event.clientX, event.clientY);
+  if (row == -1)
+    return;
+
+  // Adding URL flavor
+  var col = tree.columns[urlField];
+  var url = tree.view.getCellText(row, col);
+  col = tree.columns[descField];
+  var desc = tree.view.getCellText(row, col);
+
+  var dt = event.dataTransfer;
+  dt.setData("text/x-moz-url", url + "\n" + desc);
+  dt.setData("text/url-list", url);
+  dt.setData("text/plain", url);
+}
+
+//******** Image Stuff
+function getSelectedRows(tree)
+{
+  var start = { };
+  var end   = { };
+  var numRanges = tree.view.selection.getRangeCount();
+
+  var rowArray = [ ];
+  for (var t = 0; t < numRanges; t++) {
+    tree.view.selection.getRangeAt(t, start, end);
+    for (var v = start.value; v <= end.value; v++)
+      rowArray.push(v);
+  }
+
+  return rowArray;
+}
+
+function getSelectedRow(tree)
+{
+  var rows = getSelectedRows(tree);
+  return (rows.length == 1) ? rows[0] : -1;
+}
+
+function selectSaveFolder(aCallback)
+{
+  const nsILocalFile = Components.interfaces.nsILocalFile;
+  const nsIFilePicker = Components.interfaces.nsIFilePicker;
+  let titleText = gBundle.getString("mediaSelectFolder");
+  let fp = Components.classes["@mozilla.org/filepicker;1"].
+           createInstance(nsIFilePicker);
+  let fpCallback = function fpCallback_done(aResult) {
+    if (aResult == nsIFilePicker.returnOK) {
+      aCallback(fp.file.QueryInterface(nsILocalFile));
+    } else {
+      aCallback(null);
+    }
+  };
+
+  fp.init(window, titleText, nsIFilePicker.modeGetFolder);
+  fp.appendFilters(nsIFilePicker.filterAll);
+  try {
+    let prefs = Components.classes[PREFERENCES_CONTRACTID].
+                getService(Components.interfaces.nsIPrefBranch);
+    let initialDir = prefs.getComplexValue("browser.download.dir", nsILocalFile);
+    if (initialDir) {
+      fp.displayDirectory = initialDir;
+    }
+  } catch (ex) {
+  }
+  fp.open(fpCallback);
+}
+
+function saveMedia()
+{
+  var tree = document.getElementById("imagetree");
+  var rowArray = getSelectedRows(tree);
+  if (rowArray.length == 1) {
+    var row = rowArray[0];
+    var item = gImageView.data[row][COL_IMAGE_NODE];
+    var url = gImageView.data[row][COL_IMAGE_ADDRESS];
+
+    if (url) {
+      var titleKey = "SaveImageTitle";
+
+      if (item instanceof HTMLVideoElement)
+        titleKey = "SaveVideoTitle";
+      else if (item instanceof HTMLAudioElement)
+        titleKey = "SaveAudioTitle";
+
+      saveURL(url, null, titleKey, false, false, makeURI(item.baseURI), gDocument);
+    }
+  } else {
+    selectSaveFolder(function(aDirectory) {
+      if (aDirectory) {
+        var saveAnImage = function(aURIString, aChosenData, aBaseURI) {
+          internalSave(aURIString, null, null, null, null, false, "SaveImageTitle",
+                       aChosenData, aBaseURI, gDocument);
+        };
+
+        for (var i = 0; i < rowArray.length; i++) {
+          var v = rowArray[i];
+          var dir = aDirectory.clone();
+          var item = gImageView.data[v][COL_IMAGE_NODE];
+          var uriString = gImageView.data[v][COL_IMAGE_ADDRESS];
+          var uri = makeURI(uriString);
+
+          try {
+            uri.QueryInterface(Components.interfaces.nsIURL);
+            dir.append(decodeURIComponent(uri.fileName));
+          } catch(ex) {
+            /* data: uris */
+          }
+
+          if (i == 0) {
+            saveAnImage(uriString, new AutoChosen(dir, uri), makeURI(item.baseURI));
+          } else {
+            // This delay is a hack which prevents the download manager
+            // from opening many times. See bug 377339.
+            setTimeout(saveAnImage, 200, uriString, new AutoChosen(dir, uri),
+                       makeURI(item.baseURI));
+          }
+        }
+      }
+    });
+  }
+}
+
+function onBlockImage()
+{
+  var permissionManager = Components.classes[PERMISSION_CONTRACTID]
+                                    .getService(nsIPermissionManager);
+
+  var checkbox = document.getElementById("blockImage");
+  var uri = makeURI(document.getElementById("imageurltext").value);
+  if (checkbox.checked)
+    permissionManager.add(uri, "image", nsIPermissionManager.DENY_ACTION);
+  else
+    permissionManager.remove(uri, "image");
+}
+
+function onImageSelect()
+{
+  var previewBox   = document.getElementById("mediaPreviewBox");
+  var mediaSaveBox = document.getElementById("mediaSaveBox");
+  var splitter     = document.getElementById("mediaSplitter");
+  var tree = document.getElementById("imagetree");
+  var count = tree.view.selection.count;
+  if (count == 0) {
+    previewBox.collapsed   = true;
+    mediaSaveBox.collapsed = true;
+    splitter.collapsed     = true;
+    tree.flex = 1;
+  }
+  else if (count > 1) {
+    splitter.collapsed     = true;
+    previewBox.collapsed   = true;
+    mediaSaveBox.collapsed = false;
+    tree.flex = 1;
+  }
+  else {
+    mediaSaveBox.collapsed = true;
+    splitter.collapsed     = false;
+    previewBox.collapsed   = false;
+    tree.flex = 0;
+    makePreview(getSelectedRows(tree)[0]);
+  }
+}
+
+function makePreview(row)
+{
+  var imageTree = document.getElementById("imagetree");
+  var item = gImageView.data[row][COL_IMAGE_NODE];
+  var url = gImageView.data[row][COL_IMAGE_ADDRESS];
+  var isBG = gImageView.data[row][COL_IMAGE_BG];
+  var isAudio = false;
+
+  setItemValue("imageurltext", url);
+
+  var imageText;
+  if (!isBG &&
+      !(item instanceof SVGImageElement) &&
+      !(gDocument instanceof ImageDocument)) {
+    imageText = item.title || item.alt;
+
+    if (!imageText && !(item instanceof HTMLImageElement))
+      imageText = getValueText(item);
+  }
+  setItemValue("imagetext", imageText);
+
+  setItemValue("imagelongdesctext", item.longDesc);
+
+  // get cache info
+  var cacheKey = url.replace(/#.*$/, "");
+  openCacheEntry(cacheKey, function(cacheEntry) {
+    // find out the file size
+    var sizeText;
+    if (cacheEntry) {
+      var imageSize = cacheEntry.dataSize;
+      var kbSize = Math.round(imageSize / 1024 * 100) / 100;
+      sizeText = gBundle.getFormattedString("generalSize",
+                                            [formatNumber(kbSize), formatNumber(imageSize)]);
+    }
+    else
+      sizeText = gBundle.getString("mediaUnknownNotCached");
+    setItemValue("imagesizetext", sizeText);
+
+    var mimeType;
+    var numFrames = 1;
+    if (item instanceof HTMLObjectElement ||
+        item instanceof HTMLEmbedElement ||
+        item instanceof HTMLLinkElement)
+      mimeType = item.type;
+
+    if (!mimeType && !isBG && item instanceof nsIImageLoadingContent) {
+      var imageRequest = item.getRequest(nsIImageLoadingContent.CURRENT_REQUEST);
+      if (imageRequest) {
+        mimeType = imageRequest.mimeType;
+        var image = imageRequest.image;
+        if (image)
+          numFrames = image.numFrames;
+      }
+    }
+
+    if (!mimeType)
+      mimeType = getContentTypeFromHeaders(cacheEntry);
+
+    // if we have a data url, get the MIME type from the url
+    if (!mimeType && url.startsWith("data:")) {
+      let dataMimeType = /^data:(image\/[^;,]+)/i.exec(url);
+      if (dataMimeType)
+        mimeType = dataMimeType[1].toLowerCase();
+    }
+
+    var imageType;
+    if (mimeType) {
+      // We found the type, try to display it nicely
+      let imageMimeType = /^image\/(.*)/i.exec(mimeType);
+      if (imageMimeType) {
+        imageType = imageMimeType[1].toUpperCase();
+        if (numFrames > 1)
+          imageType = gBundle.getFormattedString("mediaAnimatedImageType",
+                                                 [imageType, numFrames]);
+        else
+          imageType = gBundle.getFormattedString("mediaImageType", [imageType]);
+      }
+      else {
+        // the MIME type doesn't begin with image/, display the raw type
+        imageType = mimeType;
+      }
+    }
+    else {
+      // We couldn't find the type, fall back to the value in the treeview
+      imageType = gImageView.data[row][COL_IMAGE_TYPE];
+    }
+    setItemValue("imagetypetext", imageType);
+
+    var imageContainer = document.getElementById("theimagecontainer");
+    var oldImage = document.getElementById("thepreviewimage");
+
+    var isProtocolAllowed = checkProtocol(gImageView.data[row]);
+
+    var newImage = new Image;
+    newImage.id = "thepreviewimage";
+    var physWidth = 0, physHeight = 0;
+    var width = 0, height = 0;
+
+    if ((item instanceof HTMLLinkElement || item instanceof HTMLInputElement ||
+         item instanceof HTMLImageElement ||
+         item instanceof SVGImageElement ||
+         (item instanceof HTMLObjectElement && mimeType && mimeType.startsWith("image/")) || isBG) && isProtocolAllowed) {
+      newImage.setAttribute("src", url);
+      physWidth = newImage.width || 0;
+      physHeight = newImage.height || 0;
+
+      // "width" and "height" attributes must be set to newImage,
+      // even if there is no "width" or "height attribute in item;
+      // otherwise, the preview image cannot be displayed correctly.
+      if (!isBG) {
+        newImage.width = ("width" in item && item.width) || newImage.naturalWidth;
+        newImage.height = ("height" in item && item.height) || newImage.naturalHeight;
+      }
+      else {
+        // the Width and Height of an HTML tag should not be used for its background image
+        // (for example, "table" can have "width" or "height" attributes)
+        newImage.width = newImage.naturalWidth;
+        newImage.height = newImage.naturalHeight;
+      }
+
+      if (item instanceof SVGImageElement) {
+        newImage.width = item.width.baseVal.value;
+        newImage.height = item.height.baseVal.value;
+      }
+
+      width = newImage.width;
+      height = newImage.height;
+
+      document.getElementById("theimagecontainer").collapsed = false
+      document.getElementById("brokenimagecontainer").collapsed = true;
+    }
+    else if (item instanceof HTMLVideoElement && isProtocolAllowed) {
+      newImage = document.createElementNS("http://www.w3.org/1999/xhtml", "video");
+      newImage.id = "thepreviewimage";
+      newImage.src = url;
+      newImage.controls = true;
+      width = physWidth = item.videoWidth;
+      height = physHeight = item.videoHeight;
+
+      document.getElementById("theimagecontainer").collapsed = false;
+      document.getElementById("brokenimagecontainer").collapsed = true;
+    }
+    else if (item instanceof HTMLAudioElement && isProtocolAllowed) {
+      newImage = new Audio;
+      newImage.id = "thepreviewimage";
+      newImage.src = url;
+      newImage.controls = true;
+      isAudio = true;
+
+      document.getElementById("theimagecontainer").collapsed = false;
+      document.getElementById("brokenimagecontainer").collapsed = true;
+    }
+    else {
+      // fallback image for protocols not allowed (e.g., javascript:)
+      // or elements not [yet] handled (e.g., object, embed).
+      document.getElementById("brokenimagecontainer").collapsed = false;
+      document.getElementById("theimagecontainer").collapsed = true;
+    }
+
+    var imageSize = "";
+    if (url && !isAudio) {
+      if (width != physWidth || height != physHeight) {
+        imageSize = gBundle.getFormattedString("mediaDimensionsScaled",
+                                               [formatNumber(physWidth),
+                                                formatNumber(physHeight),
+                                                formatNumber(width),
+                                                formatNumber(height)]);
+      }
+      else {
+        imageSize = gBundle.getFormattedString("mediaDimensions",
+                                               [formatNumber(width),
+                                                formatNumber(height)]);
+      }
+    }
+    setItemValue("imagedimensiontext", imageSize);
+
+    makeBlockImage(url);
+
+    imageContainer.removeChild(oldImage);
+    imageContainer.appendChild(newImage);
+
+    onImagePreviewShown.forEach(function(func) { func(); });
+  });
+}
+
+function makeBlockImage(url)
+{
+  var permissionManager = Components.classes[PERMISSION_CONTRACTID]
+                                    .getService(nsIPermissionManager);
+  var prefs = Components.classes[PREFERENCES_CONTRACTID]
+                        .getService(Components.interfaces.nsIPrefBranch);
+
+  var checkbox = document.getElementById("blockImage");
+  var imagePref = prefs.getIntPref("permissions.default.image");
+  if (!(/^https?:/.test(url)) || imagePref == 2)
+    // We can't block the images from this host because either is is not
+    // for http(s) or we don't load images at all
+    checkbox.hidden = true;
+  else {
+    var uri = makeURI(url);
+    if (uri.host) {
+      checkbox.hidden = false;
+      checkbox.label = gBundle.getFormattedString("mediaBlockImage", [uri.host]);
+      var perm = permissionManager.testPermission(uri, "image");
+      checkbox.checked = perm == nsIPermissionManager.DENY_ACTION;
+    }
+    else
+      checkbox.hidden = true;
+  }
+}
+
+var imagePermissionObserver = {
+  observe: function (aSubject, aTopic, aData)
+  {
+    if (document.getElementById("mediaPreviewBox").collapsed)
+      return;
+
+    if (aTopic == "perm-changed") {
+      var permission = aSubject.QueryInterface(Components.interfaces.nsIPermission);
+      if (permission.type == "image") {
+        var imageTree = document.getElementById("imagetree");
+        var row = getSelectedRow(imageTree);
+        var item = gImageView.data[row][COL_IMAGE_NODE];
+        var url = gImageView.data[row][COL_IMAGE_ADDRESS];
+        if (permission.matchesURI(makeURI(url), true)) {
+          makeBlockImage(url);
+        }
+      }
+    }
+  }
+}
+
+function getContentTypeFromHeaders(cacheEntryDescriptor)
+{
+  if (!cacheEntryDescriptor)
+    return null;
+
+  return (/^Content-Type:\s*(.*?)\s*(?:\;|$)/mi
+          .exec(cacheEntryDescriptor.getMetaDataElement("response-head")))[1];
+}
+
+//******** Other Misc Stuff
+// Modified from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html
+// parse a node to extract the contents of the node
+function getValueText(node)
+{
+  var valueText = "";
+
+  // form input elements don't generally contain information that is useful to our callers, so return nothing
+  if (node instanceof HTMLInputElement ||
+      node instanceof HTMLSelectElement ||
+      node instanceof HTMLTextAreaElement)
+    return valueText;
+
+  // otherwise recurse for each child
+  var length = node.childNodes.length;
+  for (var i = 0; i < length; i++) {
+    var childNode = node.childNodes[i];
+    var nodeType = childNode.nodeType;
+
+    // text nodes are where the goods are
+    if (nodeType == Node.TEXT_NODE)
+      valueText += " " + childNode.nodeValue;
+    // and elements can have more text inside them
+    else if (nodeType == Node.ELEMENT_NODE) {
+      // images are special, we want to capture the alt text as if the image weren't there
+      if (childNode instanceof HTMLImageElement)
+        valueText += " " + getAltText(childNode);
+      else
+        valueText += " " + getValueText(childNode);
+    }
+  }
+
+  return stripWS(valueText);
+}
+
+// Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html
+// traverse the tree in search of an img or area element and grab its alt tag
+function getAltText(node)
+{
+  var altText = "";
+
+  if (node.alt)
+    return node.alt;
+  var length = node.childNodes.length;
+  for (var i = 0; i < length; i++)
+    if ((altText = getAltText(node.childNodes[i]) != undefined))  // stupid js warning...
+      return altText;
+  return "";
+}
+
+// Copied from the Links Panel v2.3, http://segment7.net/mozilla/links/links.html
+// strip leading and trailing whitespace, and replace multiple consecutive whitespace characters with a single space
+function stripWS(text)
+{
+  var middleRE = /\s+/g;
+  var endRE = /(^\s+)|(\s+$)/g;
+
+  text = text.replace(middleRE, " ");
+  return text.replace(endRE, "");
+}
+
+function setItemValue(id, value)
+{
+  var item = document.getElementById(id);
+  if (value) {
+    item.parentNode.collapsed = false;
+    item.value = value;
+  }
+  else
+    item.parentNode.collapsed = true;
+}
+
+function formatNumber(number)
+{
+  return (+number).toLocaleString();  // coerce number to a numeric value before calling toLocaleString()
+}
+
+function formatDate(datestr, unknown)
+{
+  // scriptable date formatter, for pretty printing dates
+  var dateService = Components.classes["@mozilla.org/intl/scriptabledateformat;1"]
+                              .getService(Components.interfaces.nsIScriptableDateFormat);
+
+  var date = new Date(datestr);
+  if (!date.valueOf())
+    return unknown;
+
+  return dateService.FormatDateTime("", dateService.dateFormatLong,
+                                    dateService.timeFormatSeconds,
+                                    date.getFullYear(), date.getMonth()+1, date.getDate(),
+                                    date.getHours(), date.getMinutes(), date.getSeconds());
+}
+
+function doCopy()
+{
+  if (!gClipboardHelper)
+    return;
+
+  var elem = document.commandDispatcher.focusedElement;
+
+  if (elem && "treeBoxObject" in elem) {
+    var view = elem.view;
+    var selection = view.selection;
+    var text = [], tmp = '';
+    var min = {}, max = {};
+
+    var count = selection.getRangeCount();
+
+    for (var i = 0; i < count; i++) {
+      selection.getRangeAt(i, min, max);
+
+      for (var row = min.value; row <= max.value; row++) {
+        view.performActionOnRow("copy", row);
+
+        tmp = elem.getAttribute("copybuffer");
+        if (tmp)
+          text.push(tmp);
+        elem.removeAttribute("copybuffer");
+      }
+    }
+    gClipboardHelper.copyString(text.join("\n"), document);
+  }
+}
+
+function doSelectAll()
+{
+  var elem = document.commandDispatcher.focusedElement;
+
+  if (elem && "treeBoxObject" in elem)
+    elem.view.selection.selectAll();
+}
+
+function selectImage()
+{
+  if (!gImageElement)
+    return;
+
+  var tree = document.getElementById("imagetree");
+  for (var i = 0; i < tree.view.rowCount; i++) {
+    if (gImageElement == gImageView.data[i][COL_IMAGE_NODE] &&
+        !gImageView.data[i][COL_IMAGE_BG]) {
+      tree.view.selection.select(i);
+      tree.treeBoxObject.ensureRowIsVisible(i);
+      tree.focus();
+      return;
+    }
+  }
+}
+
+function checkProtocol(img)
+{
+  var url = img[COL_IMAGE_ADDRESS];
+  return /^data:image\//i.test(url) ||
+    /^(https?|ftp|file|about|chrome|resource):/.test(url);
+}