Merge branch 'master' of https://github.com/MoonchildProductions/UXP

5 files changed, 428 insertions, 272 deletions

diff --git a/application/palemoon/base/content/browser.js b/application/palemoon/base/content/browser.js
index 556e7a2b7..6dbd9677e 100644
--- a/application/palemoon/base/content/browser.js
+++ b/application/palemoon/base/content/browser.js
@@ -10,6 +10,9 @@ Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource:///modules/RecentWindow.jsm");
 
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+                                  "resource://gre/modules/Task.jsm");
+
 XPCOMUtils.defineLazyModuleGetter(this, "CharsetMenu",
                                   "resource:///modules/CharsetMenu.jsm");
 
@@ -1895,88 +1898,126 @@ function loadURI(uri, referrer, postData, allowThirdPartyFixup) {
   } catch (e) {}
 }
 
-function getShortcutOrURI(aURL, aPostDataRef, aMayInheritPrincipal) {
-  // Initialize outparam to false
-  if (aMayInheritPrincipal)
-    aMayInheritPrincipal.value = false;
+/**
+ * Given a urlbar value, discerns between URIs, keywords and aliases.
+ *
+ * @param url
+ *        The urlbar value.
+ * @param callback (optional, deprecated)
+ *        The callback function invoked when done. This parameter is
+ *        deprecated, please use the Promise that is returned.
+ *
+ * @return Promise<{ postData, url, mayInheritPrincipal }>
+ */
+function getShortcutOrURIAndPostData(url, callback = null) {
+  if (callback) {
+    Deprecated.warning("Please use the Promise returned by " +
+                       "getShortcutOrURIAndPostData() instead of passing a " +
+                       "callback",
+                       "https://bugzilla.mozilla.org/show_bug.cgi?id=1100294");
+  }
 
-  var shortcutURL = null;
-  var keyword = aURL;
-  var param = "";
+  return Task.spawn(function* () {
+    let mayInheritPrincipal = false;
+    let postData = null;
+    let shortcutURL = null;
+    let keyword = url;
+    let param = "";
 
-  var offset = aURL.indexOf(" ");
-  if (offset > 0) {
-    keyword = aURL.substr(0, offset);
-    param = aURL.substr(offset + 1);
-  }
+    let offset = url.indexOf(" ");
+    if (offset > 0) {
+      keyword = url.substr(0, offset);
+      param = url.substr(offset + 1);
+    }
 
-  if (!aPostDataRef)
-    aPostDataRef = {};
+    let engine = Services.search.getEngineByAlias(keyword);
+    if (engine) {
+      let submission = engine.getSubmission(param, null, "keyword");
+      postData = submission.postData;
+      return { postData: submission.postData, url: submission.uri.spec,
+               mayInheritPrincipal };
+    }
 
-  var engine = Services.search.getEngineByAlias(keyword);
-  if (engine) {
-    var submission = engine.getSubmission(param);
-    aPostDataRef.value = submission.postData;
-    return submission.uri.spec;
-  }
+    let entry = yield PlacesUtils.keywords.fetch(keyword);
+    if (entry) {
+      shortcutURL = entry.url.href;
+      postData = entry.postData;
+    }
 
-  [shortcutURL, aPostDataRef.value] =
-    PlacesUtils.getURLAndPostDataForKeyword(keyword);
+    if (!shortcutURL) {
+      return { postData, url, mayInheritPrincipal };
+    }
 
-  if (!shortcutURL)
-    return aURL;
+    let escapedPostData = "";
+    if (postData)
+      escapedPostData = unescape(postData);
 
-  var postData = "";
-  if (aPostDataRef.value)
-    postData = unescape(aPostDataRef.value);
+    if (/%s/i.test(shortcutURL) || /%s/i.test(escapedPostData)) {
+      let charset = "";
+      const re = /^(.*)\&mozcharset=([a-zA-Z][_\-a-zA-Z0-9]+)\s*$/;
+      let matches = shortcutURL.match(re);
 
-  if (/%s/i.test(shortcutURL) || /%s/i.test(postData)) {
-    var charset = "";
-    const re = /^(.*)\&mozcharset=([a-zA-Z][_\-a-zA-Z0-9]+)\s*$/;
-    var matches = shortcutURL.match(re);
-    if (matches)
-      [, shortcutURL, charset] = matches;
-    else {
-      // Try to get the saved character-set.
-      try {
-        // makeURI throws if URI is invalid.
-        // Will return an empty string if character-set is not found.
-        charset = PlacesUtils.history.getCharsetForURI(makeURI(shortcutURL));
-      } catch (e) {}
-    }
+      if (matches) {
+        [, shortcutURL, charset] = matches;
+      } else {
+        let uri;
+        try {
+          // makeURI() throws if URI is invalid.
+          uri = makeURI(shortcutURL);
+        } catch (ex) {}
+
+        if (uri) {
+          // Try to get the saved character-set.
+          // Will return an empty string if character-set is not found.
+          charset = yield PlacesUtils.getCharsetForURI(uri);
+        }
+      }
 
-    // encodeURIComponent produces UTF-8, and cannot be used for other charsets.
-    // escape() works in those cases, but it doesn't uri-encode +, @, and /.
-    // Therefore we need to manually replace these ASCII characters by their
-    // encodeURIComponent result, to match the behavior of nsEscape() with
-    // url_XPAlphas
-    var encodedParam = "";
-    if (charset && charset != "UTF-8")
-      encodedParam = escape(convertFromUnicode(charset, param)).
-                     replace(/[+@\/]+/g, encodeURIComponent);
-    else // Default charset is UTF-8
-      encodedParam = encodeURIComponent(param);
+      // encodeURIComponent produces UTF-8, and cannot be used for other charsets.
+      // escape() works in those cases, but it doesn't uri-encode +, @, and /.
+      // Therefore we need to manually replace these ASCII characters by their
+      // encodeURIComponent result, to match the behavior of nsEscape() with
+      // url_XPAlphas
+      let encodedParam = "";
+      if (charset && charset != "UTF-8")
+        encodedParam = escape(convertFromUnicode(charset, param)).
+                       replace(/[+@\/]+/g, encodeURIComponent);
+      else // Default charset is UTF-8
+        encodedParam = encodeURIComponent(param);
 
-    shortcutURL = shortcutURL.replace(/%s/g, encodedParam).replace(/%S/g, param);
+      shortcutURL = shortcutURL.replace(/%s/g, encodedParam).replace(/%S/g, param);
 
-    if (/%s/i.test(postData)) // POST keyword
-      aPostDataRef.value = getPostDataStream(postData, param, encodedParam,
-                                             "application/x-www-form-urlencoded");
-  }
-  else if (param) {
-    // This keyword doesn't take a parameter, but one was provided. Just return
-    // the original URL.
-    aPostDataRef.value = null;
+      if (/%s/i.test(escapedPostData)) // POST keyword
+        postData = getPostDataStream(escapedPostData, param, encodedParam,
+                                     "application/x-www-form-urlencoded");
 
-    return aURL;
-  }
+      // This URL came from a bookmark, so it's safe to let it inherit the current
+      // document's principal.
+      mayInheritPrincipal = true;
+
+      return { postData, url: shortcutURL, mayInheritPrincipal };
+    }
+
+    if (param) {
+      // This keyword doesn't take a parameter, but one was provided. Just return
+      // the original URL.
+      postData = null;
+
+      return { postData, url, mayInheritPrincipal };
+    }
 
-  // This URL came from a bookmark, so it's safe to let it inherit the current
-  // document's principal.
-  if (aMayInheritPrincipal)
-    aMayInheritPrincipal.value = true;
+    // This URL came from a bookmark, so it's safe to let it inherit the current
+    // document's principal.
+    mayInheritPrincipal = true;
 
-  return shortcutURL;
+    return { postData, url: shortcutURL, mayInheritPrincipal };
+  }).then(data => {
+    if (callback) {
+      callback(data);
+    }
+
+    return data;
+  });
 }
 
 function getPostDataStream(aStringData, aKeyword, aEncKeyword, aType) {
@@ -2635,8 +2676,8 @@ var browserDragAndDrop = {
     }
   },
 
-  drop: function (aEvent, aName, aDisallowInherit) {
-    return Services.droppedLinkHandler.dropLink(aEvent, aName, aDisallowInherit);
+  dropLinks: function (aEvent, aDisallowInherit) {
+    return Services.droppedLinkHandler.dropLinks(aEvent, aDisallowInherit);
   }
 };
 
@@ -2644,8 +2685,10 @@ var homeButtonObserver = {
   onDrop: function (aEvent)
     {
       // disallow setting home pages that inherit the principal
-      let url = browserDragAndDrop.drop(aEvent, {}, true);
-      setTimeout(openHomeDialog, 0, url);
+      let links = browserDragAndDrop.dropLinks(aEvent, true);
+      if (links.length) {
+        setTimeout(openHomeDialog, 0, links.map(link => link.url).join("|"));
+      }
     },
 
   onDragOver: function (aEvent)
@@ -2661,18 +2704,24 @@ var homeButtonObserver = {
 function openHomeDialog(aURL)
 {
   var promptTitle = gNavigatorBundle.getString("droponhometitle");
-  var promptMsg   = gNavigatorBundle.getString("droponhomemsg");
+  var promptMsg;
+  if (aURL.includes("|")) {
+    promptMsg = gNavigatorBundle.getString("droponhomemsgMultiple");
+  } else {
+    promptMsg = gNavigatorBundle.getString("droponhomemsg");
+  }
+
   var pressedVal  = Services.prompt.confirmEx(window, promptTitle, promptMsg,
                           Services.prompt.STD_YES_NO_BUTTONS,
                           null, null, null, null, {value:0});
 
   if (pressedVal == 0) {
     try {
-      var str = Components.classes["@mozilla.org/supports-string;1"]
-                          .createInstance(Components.interfaces.nsISupportsString);
-      str.data = aURL;
+      var homepageStr = Components.classes["@mozilla.org/supports-string;1"]
+                        .createInstance(Components.interfaces.nsISupportsString);
+      homepageStr.data = aURL;
       gPrefService.setComplexValue("browser.startup.homepage",
-                                   Components.interfaces.nsISupportsString, str);
+                                   Components.interfaces.nsISupportsString, homepageStr);
     } catch (ex) {
       dump("Failed to set the home page.\n"+ex+"\n");
     }
@@ -2720,13 +2769,16 @@ var newTabButtonObserver = {
 
   onDrop: function (aEvent)
   {
-    let url = browserDragAndDrop.drop(aEvent, { });
-    var postData = {};
-    url = getShortcutOrURI(url, postData);
-    if (url) {
-      // allow third-party services to fixup this URL
-      openNewTabWith(url, null, postData.value, aEvent, true);
-    }
+    let links = browserDragAndDrop.dropLinks(aEvent);
+    Task.spawn(function*() {
+      for (let link of links) {
+        let data = yield getShortcutOrURIAndPostData(link.url);
+        if (data.url) {
+          // allow third-party services to fixup this URL
+          openNewTabWith(data.url, null, data.postData, aEvent, true);
+        }
+      }
+    });
   }
 }
 
@@ -2740,13 +2792,16 @@ var newWindowButtonObserver = {
   },
   onDrop: function (aEvent)
   {
-    let url = browserDragAndDrop.drop(aEvent, { });
-    var postData = {};
-    url = getShortcutOrURI(url, postData);
-    if (url) {
-      // allow third-party services to fixup this URL
-      openNewWindowWith(url, null, postData.value, true);
-    }
+    let links = browserDragAndDrop.dropLinks(aEvent);
+    Task.spawn(function*() {
+      for (let link of links) {
+        let data = yield getShortcutOrURIAndPostData(link.url);
+        if (data.url) {
+          // allow third-party services to fixup this URL
+          openNewWindowWith(data.url, null, data.postData, true);
+        }
+      }
+    });
   }
 }
 
@@ -5034,36 +5089,81 @@ function middleMousePaste(event) {
   // bar's behavior (stripsurroundingwhitespace)
   clipboard = clipboard.replace(/\s*\n\s*/g, "");
 
-  let mayInheritPrincipal = { value: false };
-  let url = getShortcutOrURI(clipboard, mayInheritPrincipal);
-  try {
-    makeURI(url);
-  } catch (ex) {
-    // Not a valid URI.
-    return;
+  // if it's not the current tab, we don't need to do anything because the 
+  // browser doesn't exist.
+  let where = whereToOpenLink(event, true, false);
+  let lastLocationChange;
+  if (where == "current") {
+    lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
   }
 
-  try {
-    addToUrlbarHistory(url);
-  } catch (ex) {
-    // Things may go wrong when adding url to session history,
-    // but don't let that interfere with the loading of the url.
-    Cu.reportError(ex);
-  }
+  getShortcutOrURIAndPostData(clipboard).then(data => {
+    try {
+      makeURI(data.url);
+    } catch (ex) {
+      // Not a valid URI.
+      return;
+    }
 
-  openUILink(url, event,
-             { ignoreButton: true,
-               disallowInheritPrincipal: !mayInheritPrincipal.value });
+    try {
+      addToUrlbarHistory(data.url);
+    } catch (ex) {
+      // Things may go wrong when adding url to session history,
+      // but don't let that interfere with the loading of the url.
+      Cu.reportError(ex);
+    }
+
+    if (where != "current" ||
+        lastLocationChange == gBrowser.selectedBrowser.lastLocationChange) {
+      openUILink(data.url, event,
+                 { ignoreButton: true,
+                   disallowInheritPrincipal: !data.mayInheritPrincipal,
+                   initiatingDoc: event ? event.target.ownerDocument : null });
+    }
+  });
 
   event.stopPropagation();
 }
 
-function handleDroppedLink(event, url, name)
+// handleDroppedLink has the following 2 overloads:
+//   handleDroppedLink(event, url, name)
+//   handleDroppedLink(event, links)
+function handleDroppedLink(event, urlOrLinks, name)
 {
-  let postData = { };
-  let uri = getShortcutOrURI(url, postData);
-  if (uri)
-    loadURI(uri, null, postData.value, false);
+  let links;
+  if (Array.isArray(urlOrLinks)) {
+    links = urlOrLinks;
+  } else {
+    links = [{ url: urlOrLinks, name, type: "" }];
+  }
+
+  let lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
+
+  let userContextId = gBrowser.selectedBrowser
+                      .getAttribute("usercontextid") || 0;
+
+  let inBackground = Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+  if (event.shiftKey)
+    inBackground = !inBackground;
+
+  Task.spawn(function*() {
+    let urls = [];
+    let postDatas = [];
+    for (let link of links) {
+      let data = yield getShortcutOrURIAndPostData(link.url);
+      urls.push(data.url);
+      postDatas.push(data.postData);
+    }
+    if (lastLocationChange == gBrowser.selectedBrowser.lastLocationChange) {
+      gBrowser.loadTabs(urls, {
+        inBackground,
+        replace: true,
+        allowThirdPartyFixup: false,
+        postDatas,
+        userContextId,
+      });
+    }
+  });
 
   // Keep the event from being handled by the dragDrop listeners
   // built-in to goanna if they happen to be above us.
@@ -5178,7 +5278,6 @@ function charsetLoadListener() {
   }
 }
 
-
 var gPageStyleMenu = {
 
   _getAllStyleSheets: function (frameset) {
diff --git a/application/palemoon/base/content/newtab/grid.js b/application/palemoon/base/content/newtab/grid.js
index 46e0b804b..a614d0396 100644
--- a/application/palemoon/base/content/newtab/grid.js
+++ b/application/palemoon/base/content/newtab/grid.js
@@ -59,8 +59,13 @@ var gGrid = {
    * Refreshes the grid and re-creates all sites.
    */
   refresh: function Grid_refresh() {
+    let cells = this.cells;
+    if (!cells) {
+      return;
+    }
+
     // Remove all sites.
-    this.cells.forEach(function (cell) {
+    cells.forEach(function (cell) {
       let node = cell.node;
       let child = node.firstElementChild;
 
diff --git a/application/palemoon/base/content/openLocation.js b/application/palemoon/base/content/openLocation.js
index 316dfac70..1a10334c7 100644
--- a/application/palemoon/base/content/openLocation.js
+++ b/application/palemoon/base/content/openLocation.js
@@ -61,45 +61,52 @@ function doEnabling()
 
 function open()
 {
-  var url;
-  var postData = {};
-  var mayInheritPrincipal = {value: false};
-  if (browser)
-    url = browser.getShortcutOrURI(dialog.input.value, postData, mayInheritPrincipal);
-  else
-    url = dialog.input.value;
+  getShortcutOrURIAndPostData(dialog.input.value).then(data => {
+    let url;
+    let postData = null;
+    let mayInheritPrincipal = false;
+
+    if (browser) {
+      url = data.url;
+      postData = data.postData;
+      mayInheritPrincipal = data.mayInheritPrincipal;
+    } else {
+      url = dialog.input.value;
+    }
 
-  try {
-    // Whichever target we use for the load, we allow third-party services to
-    // fixup the URI
-    switch (dialog.openWhereList.value) {
-      case "0":
-        var webNav = Components.interfaces.nsIWebNavigation;
-        var flags = webNav.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
-                    webNav.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
-        if (!mayInheritPrincipal.value)
-          flags |= webNav.LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
-        browser.gBrowser.loadURIWithFlags(url, flags, null, null, postData.value);
-        break;
-      case "1":
-        window.opener.delayedOpenWindow(getBrowserURL(), "all,dialog=no",
-                                        url, postData.value, null, null, true);
-        break;
-      case "3":
-        browser.delayedOpenTab(url, null, null, postData.value, true);
-        break;
+    try {
+      // Whichever target we use for the load, we allow third-party services to
+      // fixup the URI
+      switch (dialog.openWhereList.value) {
+        case "0":
+          var webNav = Components.interfaces.nsIWebNavigation;
+          var flags = webNav.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
+                      webNav.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+          if (!mayInheritPrincipal)
+            flags |= webNav.LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
+          browser.gBrowser.loadURIWithFlags(url, flags, null, null, postData);
+          break;
+        case "1":
+          window.opener.delayedOpenWindow(getBrowserURL(), "all,dialog=no",
+                                          url, postData, null, null, true);
+          break;
+        case "3":
+          browser.delayedOpenTab(url, null, null, postData, true);
+          break;
+      }
+    }
+    catch(exception) {
     }
-  }
-  catch(exception) {
-  }
 
-  if (pref) {
-    gOpenLocationLastURL.value = dialog.input.value;
-    pref.setIntPref("general.open_location.last_window_choice", dialog.openWhereList.value);
-  }
+    if (pref) {
+      gOpenLocationLastURL.value = dialog.input.value;
+      pref.setIntPref("general.open_location.last_window_choice", dialog.openWhereList.value);
+    }
+
+    // Delay closing slightly to avoid timing bug on Linux.
+    window.close();
+  });
 
-  // Delay closing slightly to avoid timing bug on Linux.
-  window.close();
   return false;
 }
 
diff --git a/application/palemoon/base/content/tabbrowser.xml b/application/palemoon/base/content/tabbrowser.xml
index a7cc6deea..c06b49af0 100644
--- a/application/palemoon/base/content/tabbrowser.xml
+++ b/application/palemoon/base/content/tabbrowser.xml
@@ -570,6 +570,12 @@
 
               const nsIWebProgressListener = Components.interfaces.nsIWebProgressListener;
               const nsIChannel = Components.interfaces.nsIChannel;
+              let location, originalLocation;
+              try {
+                aRequest.QueryInterface(nsIChannel)
+                location = aRequest.URI;
+                originalLocation = aRequest.originalURI;
+              } catch (ex) {}
 
               if (aStateFlags & nsIWebProgressListener.STATE_START) {
                 this.mRequestCount++;
@@ -588,16 +594,8 @@
 
               if (aStateFlags & nsIWebProgressListener.STATE_START &&
                   aStateFlags & nsIWebProgressListener.STATE_IS_NETWORK) {
-                // It's okay to clear what the user typed when we start
-                // loading a document. If the user types, this counter gets
-                // set to zero, if the document load ends without an
-                // onLocationChange, this counter gets decremented
-                // (so we keep it while switching tabs after failed loads)
-                // We need to add 2 because loadURIWithFlags may have
-                // cancelled a pending load which would have cleared
-                // its anchor scroll detection temporary increment.
                 if (aWebProgress.isTopLevel)
-                  this.mBrowser.userTypedClear += 2;
+                  this.mBrowser.urlbarChangeTracker.startedLoad();
 
                 if (this._shouldShowProgress(aRequest)) {
                   if (!(aStateFlags & nsIWebProgressListener.STATE_RESTORING)) {
@@ -625,8 +623,8 @@
                 this.mTab.removeAttribute("progress");
 
                 if (aWebProgress.isTopLevel) {
-                  if (!Components.isSuccessCode(aStatus) &&
-                      !isTabEmpty(this.mTab)) {
+                  let isSuccessful = Components.isSuccessCode(aStatus);
+                  if (!isSuccessful && !isTabEmpty(this.mTab)) {
                     // Restore the current document's location in case the
                     // request was stopped (possibly from a content script)
                     // before the location changed.
@@ -635,14 +633,8 @@
 
                     if (this.mTab.selected && gURLBar)
                       URLBarSetURI();
-                  } else {
-                    // The document is done loading, we no longer want the
-                    // value cleared.
-
-                    if (this.mBrowser.userTypedClear > 1)
-                      this.mBrowser.userTypedClear -= 2;
-                    else if (this.mBrowser.userTypedClear > 0)
-                      this.mBrowser.userTypedClear--;
+                  } else if (isSuccessful) {
+                    this.mBrowser.urlbarChangeTracker.finishedLoad();
                   }
 
                   if (!this.mBrowser.mIconURL)
@@ -652,8 +644,6 @@
                 if (this.mBlank)
                   this.mBlank = false;
 
-                var location = aRequest.QueryInterface(nsIChannel).URI;
-
                 // For keyword URIs clear the user typed value since they will be changed into real URIs
                 if (location.scheme == "keyword")
                   this.mBrowser.userTypedValue = null;
@@ -696,13 +686,12 @@
               let topLevel = aWebProgress.isTopLevel;
 
               if (topLevel) {
-                // If userTypedClear > 0, the document loaded correctly and we should be
-                // clearing the user typed value. We also need to clear the typed value
+                // We need to clear the typed value
                 // if the document failed to load, to make sure the urlbar reflects the
                 // failed URI (particularly for SSL errors). However, don't clear the value
                 // if the error page's URI is about:blank, because that causes complete
                 // loss of urlbar contents for invalid URI errors (see bug 867957).
-                if (this.mBrowser.userTypedClear > 0 ||
+                if (this.mBrowser.didStartLoadSinceLastUserTyping() ||
                     ((aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) &&
                      aLocation.spec != "about:blank"))
                   this.mBrowser.userTypedValue = null;
@@ -738,8 +727,10 @@
                                              aFlags]);
               }
 
-              if (topLevel)
+              if (topLevel) {
                 this.mBrowser.lastURI = aLocation;
+                this.mBrowser.lastLocationChange = Date.now();
+              }
             },
 
             onStatusChange: function (aWebProgress, aRequest, aStatus, aMessage) {
@@ -1312,6 +1303,24 @@
         <parameter name="aLoadInBackground"/>
         <parameter name="aReplace"/>
         <body><![CDATA[
+          let aAllowThirdPartyFixup;
+          let aTargetTab;
+          let aNewIndex = -1;
+          let aPostDatas = [];
+          let aUserContextId;
+          if (arguments.length == 2 &&
+              typeof arguments[1] == "object") {
+            let params = arguments[1];
+            aLoadInBackground     = params.inBackground;
+            aReplace              = params.replace;
+            aAllowThirdPartyFixup = params.allowThirdPartyFixup;
+            aTargetTab            = params.targetTab;
+            aNewIndex             = typeof params.newIndex === "number" ?
+                                    params.newIndex : aNewIndex;
+            aPostDatas            = params.postDatas || aPostDatas;
+            aUserContextId        = params.userContextId;
+          }
+
           if (!aURIs.length)
             return;
 
@@ -1329,22 +1338,53 @@
           var multiple = aURIs.length > 1;
           var owner = multiple || aLoadInBackground ? null : this.selectedTab;
           var firstTabAdded = null;
+          var targetTabIndex = -1;
 
           if (aReplace) {
+            let browser;
+            if (aTargetTab) {
+              browser = this.getBrowserForTab(aTargetTab);
+              targetTabIndex = aTargetTab._tPos;
+            } else {
+              browser = this.mCurrentBrowser;
+              targetTabIndex = this.tabContainer.selectedIndex;
+            }
+            let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+            if (aAllowThirdPartyFixup) {
+              flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
+                       Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+            }
             try {
-              this.loadURI(aURIs[0], null, null);
+              browser.loadURIWithFlags(aURIs[0], {
+                flags, postData: aPostDatas[0]
+              });
             } catch (e) {
               // Ignore failure in case a URI is wrong, so we can continue
               // opening the next ones.
             }
+          } else {
+            firstTabAdded = this.addTab(aURIs[0], {
+              ownerTab: owner,
+              skipAnimation: multiple,
+              allowThirdPartyFixup: aAllowThirdPartyFixup,
+              postData: aPostDatas[0],
+              userContextId: aUserContextId
+            });
+            if (aNewIndex !== -1) {
+              this.moveTabTo(firstTabAdded, aNewIndex);
+              targetTabIndex = firstTabAdded._tPos;
+            }
           }
-          else
-            firstTabAdded = this.addTab(aURIs[0], {ownerTab: owner, skipAnimation: multiple});
 
-          var tabNum = this.tabContainer.selectedIndex;
+          let tabNum = targetTabIndex;
           for (let i = 1; i < aURIs.length; ++i) {
-            let tab = this.addTab(aURIs[i], {skipAnimation: true});
-            if (aReplace)
+            let tab = this.addTab(aURIs[i], {
+              skipAnimation: true,
+              allowThirdPartyFixup: aAllowThirdPartyFixup,
+              postData: aPostDatas[i],
+              userContextId: aUserContextId
+            });
+            if (targetTabIndex !== -1)
               this.moveTabTo(tab, ++tabNum);
           }
 
@@ -2976,10 +3016,6 @@
         ]]></body>
       </method>
 
-      <property name="userTypedClear"
-                onget="return this.mCurrentBrowser.userTypedClear;"
-                onset="return this.mCurrentBrowser.userTypedClear = val;"/>
-
       <property name="userTypedValue"
                 onget="return this.mCurrentBrowser.userTypedValue;"
                 onset="return this.mCurrentBrowser.userTypedValue = val;"/>
@@ -4456,40 +4492,35 @@
           this.tabbrowser.updateCurrentBrowser(true);
         } else {
           // Pass true to disallow dropping javascript: or data: urls
-          let url;
+          let links;
           try {
-            url = browserDragAndDrop.drop(event, { }, true);
+            links = browserDragAndDrop.dropLinks(event, true);
           } catch (ex) {}
 
 //          // valid urls don't contain spaces ' '; if we have a space it isn't a valid url.
 //          if (!url || url.includes(" ")) //PMed
-          if (!url) //FF
+          if (!links || links.length === 0) //FF
             return;
 
-          let bgLoad = Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+          let inBackground = Services.prefs.getBoolPref("browser.tabs.loadInBackground");
 
           if (event.shiftKey)
-            bgLoad = !bgLoad;
+            inBackground = !inBackground;
 
-          let tab = this._getDragTargetTab(event);
-          if (!tab || dropEffect == "copy") {
-            // We're adding a new tab.
-            let newIndex = this._getDropIndex(event);
-            let newTab = this.tabbrowser.loadOneTab(url, {inBackground: bgLoad, allowThirdPartyFixup: true});
-            this.tabbrowser.moveTabTo(newTab, newIndex);
-          } else {
-            // Load in an existing tab.
-            try {
-              let webNav = Ci.nsIWebNavigation;
-              let flags = webNav.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
-                          webNav.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
-              this.tabbrowser.getBrowserForTab(tab).loadURIWithFlags(url, flags);
-              if (!bgLoad)
-                this.selectedItem = tab;
-            } catch(ex) {
-              // Just ignore invalid urls
-            }
-          }
+          let targetTab = this._getDragTargetTab(event);
+          let userContextId = this.selectedItem
+                              .getAttribute("usercontextid") || 0;
+          let replace = !(!targetTab || dropEffect == "copy");
+          let newIndex = this._getDropIndex(event);
+          let urls = links.map(link => link.url);
+          this.tabbrowser.loadTabs(urls, {
+            inBackground,
+            replace,
+            allowThirdPartyFixup: true,
+            targetTab,
+            newIndex,
+            userContextId,
+          });
         }
 
         if (draggedTab) {
diff --git a/application/palemoon/base/content/urlbarBindings.xml b/application/palemoon/base/content/urlbarBindings.xml
index 4a6cfeee5..985769ec2 100644
--- a/application/palemoon/base/content/urlbarBindings.xml
+++ b/application/palemoon/base/content/urlbarBindings.xml
@@ -263,6 +263,9 @@
           var postData = null;
 
           var action = this._parseActionUrl(url);
+          let lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
+
+          let matchLastLocationChange = true;
           if (action) {
             url = action.param;
             if (this.hasAttribute("actiontype")) {
@@ -275,82 +278,94 @@
               }
               return;
             }
+            continueOperation.call(this);
           }
           else {
-            [url, postData, mayInheritPrincipal] = this._canonizeURL(aTriggeringEvent);
-            if (!url)
-              return;
-          }
-
-          this.value = url;
-          gBrowser.userTypedValue = url;
-          try {
-            addToUrlbarHistory(url);
-          } catch (ex) {
-            // Things may go wrong when adding url to session history,
-            // but don't let that interfere with the loading of the url.
-            Cu.reportError(ex);
+            this._canonizeURL(aTriggeringEvent, response => {
+              [url, postData, mayInheritPrincipal] = response;
+              if (url) {
+                matchLastLocationChange = (lastLocationChange ==
+                                           gBrowser.selectedBrowser.lastLocationChange);
+                continueOperation.call(this);
+              }
+            });
           }
 
-          function loadCurrent() {
-            let webnav = Ci.nsIWebNavigation;
-            let flags = webnav.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
-                        webnav.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
-            // Pass LOAD_FLAGS_DISALLOW_INHERIT_OWNER to prevent any loads from
-            // inheriting the currently loaded document's principal, unless this
-            // URL is marked as safe to inherit (e.g. came from a bookmark
-            // keyword).
-            if (!mayInheritPrincipal)
-              flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
-            gBrowser.loadURIWithFlags(url, flags, null, null, postData);
-          }
+          function continueOperation()
+          {
+            this.value = url;
+            gBrowser.userTypedValue = url;
+            try {
+              addToUrlbarHistory(url);
+            } catch (ex) {
+              // Things may go wrong when adding url to session history,
+              // but don't let that interfere with the loading of the url.
+              Cu.reportError(ex);
+            }
 
-          // Focus the content area before triggering loads, since if the load
-          // occurs in a new tab, we want focus to be restored to the content
-          // area when the current tab is re-selected.
-          gBrowser.selectedBrowser.focus();
+            function loadCurrent() {
+              let flags = Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+              // Pass LOAD_FLAGS_DISALLOW_INHERIT_OWNER to prevent any loads from
+              // inheriting the currently loaded document's principal, unless this
+              // URL is marked as safe to inherit (e.g. came from a bookmark
+              // keyword).
+              if (!mayInheritPrincipal)
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
+              // If the value wasn't typed, we know that we decoded the value as
+              // UTF-8 (see losslessDecodeURI)
+              if (!this.valueIsTyped)
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_URI_IS_UTF8;
+              gBrowser.loadURIWithFlags(url, flags, null, null, postData);
+            }
 
-          let isMouseEvent = aTriggeringEvent instanceof MouseEvent;
-          let altEnter = !isMouseEvent && aTriggeringEvent && aTriggeringEvent.altKey;
+            // Focus the content area before triggering loads, since if the load
+            // occurs in a new tab, we want focus to be restored to the content
+            // area when the current tab is re-selected.
+            gBrowser.selectedBrowser.focus();
 
-          if (altEnter) {
-            // XXX This was added a long time ago, and I'm not sure why it is
-            // necessary. Alt+Enter's default action might cause a system beep,
-            // or something like that?
-            aTriggeringEvent.preventDefault();
-            aTriggeringEvent.stopPropagation();
-          }
+            let isMouseEvent = aTriggeringEvent instanceof MouseEvent;
 
-          // If the current tab is empty, ignore Alt+Enter (just reuse this tab)
-          altEnter = altEnter && !isTabEmpty(gBrowser.selectedTab);
+            // If the current tab is empty, ignore Alt+Enter (just reuse this tab)
+            let altEnter = !isMouseEvent && aTriggeringEvent &&
+              aTriggeringEvent.altKey && !isTabEmpty(gBrowser.selectedTab);
 
-          if (isMouseEvent || altEnter) {
-            // Use the standard UI link behaviors for clicks or Alt+Enter
-            let where = "tab";
-            if (isMouseEvent)
-              where = whereToOpenLink(aTriggeringEvent, false, false);
+            if (isMouseEvent || altEnter) {
+              // Use the standard UI link behaviors for clicks or Alt+Enter
+              let where = "tab";
+              if (isMouseEvent)
+                where = whereToOpenLink(aTriggeringEvent, false, false);
 
-            if (where == "current") {
-              loadCurrent();
+              if (where == "current") {
+                if (matchLastLocationChange) {
+                  loadCurrent();
+                }
+              } else {
+                this.handleRevert();
+                let params = { allowThirdPartyFixup: true,
+                               postData: postData,
+                               initiatingDoc: document };
+                if (!this.valueIsTyped)
+                  params.isUTF8 = true;
+                openUILinkIn(url, where, params);
+              }
             } else {
-              this.handleRevert();
-              let params = { allowThirdPartyFixup: true,
-                             postData: postData,
-                             initiatingDoc: document };
-              openUILinkIn(url, where, params);
+              if (matchLastLocationChange) {
+                loadCurrent();
+              }
             }
-          } else {
-            loadCurrent();
           }
         ]]></body>
       </method>
 
       <method name="_canonizeURL">
         <parameter name="aTriggeringEvent"/>
+        <parameter name="aCallback"/>
         <body><![CDATA[
           var url = this.value;
-          if (!url)
-            return ["", null, false];
+          if (!url) {
+            aCallback(["", null, false]);
+            return;
+          }
 
           // Only add the suffix when the URL bar value isn't already "URL-like",
           // and only if we get a keyboard event, to match user expectations.
@@ -403,11 +418,9 @@
             }
           }
 
-          var postData = {};
-          var mayInheritPrincipal = { value: false };
-          url = getShortcutOrURI(url, postData, mayInheritPrincipal);
-
-          return [url, postData.value, mayInheritPrincipal.value];
+          getShortcutOrURIAndPostData(url).then(data => {
+            aCallback([data.url, data.postData, data.mayInheritPrincipal]);
+          });
         ]]></body>
       </method>
 
@@ -442,11 +455,12 @@
       <method name="onDrop">
         <parameter name="aEvent"/>
         <body><![CDATA[
-          let url = browserDragAndDrop.drop(aEvent, { })
+          let links = browserDragAndDrop.dropLinks(aEvent);
 
           // The URL bar automatically handles inputs with newline characters,
           // so we can get away with treating text/x-moz-url flavours as text/plain.
-          if (url) {
+          if (links.length > 0 && links[0].url) {
+            let url = links[0].url;
             aEvent.preventDefault();
             this.value = url;
             SetPageProxyState("invalid");