Bug 590246 - Multitouch swipe gestures [r=mfinkle]

mobile/chrome/content/InputHandler.js

@@ -127,6 +127,7 @@ function InputHandler(browserViewContainer) {
   window.addEventListener("mousemove", this, true);
   window.addEventListener("click", this, true);
   window.addEventListener("contextmenu", this, false);
+  window.addEventListener("MozSwipeGesture", this, true);
   window.addEventListener("MozMagnifyGestureStart", this, true);
   window.addEventListener("MozMagnifyGestureUpdate", this, true);
   window.addEventListener("MozMagnifyGesture", this, true);
@@ -1238,6 +1239,24 @@ GestureModule.prototype = {
     try {
       let consume = false;
       switch (aEvent.type) {
+        case "MozSwipeGesture":
+          let gesture = Ci.nsIDOMSimpleGestureEvent;
+          switch (aEvent.direction) {
+            case gesture.DIRECTION_UP:
+              Browser.scrollContentToTop();
+              break;
+            case gesture.DIRECTION_DOWN:
+              Browser.scrollContentToBottom();
+              break;
+            case gesture.DIRECTION_LEFT:
+              CommandUpdater.doCommand("cmd_back");
+              break;
+            case gesture.DIRECTION_RIGHT:
+              CommandUpdater.doCommand("cmd_forward");
+              break;
+          }
+          break;
+
         case "MozMagnifyGestureStart":
           consume = true;
           this._pinchStart(aEvent);

mobile/chrome/content/browser.js

@@ -673,6 +673,18 @@ var Browser = {
     this._browserView.onAfterVisibleMove();
   },
 
+  // cmd_scrollBottom does not work in Fennec (Bug 590535).
+  scrollContentToBottom: function scrollContentToTop() {
+    let x = {}, y = {};
+    this.contentScrollboxScroller.getScrolledSize(x, y);
+    this.contentScrollboxScroller.scrollTo(0, y.value);
+
+    this.pageScrollboxScroller.getScrolledSize(x, y);
+    this.pageScrollboxScroller.scrollTo(0, y.value);
+
+    this._browserView.onAfterVisibleMove();
+  },
+
   /** Let current browser's scrollbox know about where content has been panned. */
   scrollBrowserToContent: function scrollBrowserToContent() {
     let browser = this.selectedBrowser;