Expose more gestures to ContentViewCore.GestureStateListeners

content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java

Index: content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java b/content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..7d404f26e5cd99adb186f6c798402e9c066fc087
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content_public/browser/GestureStateListener.java
@@ -0,0 +1,64 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.content_public.browser;
+
+/**
+ * A class that is notified of events and state changes related to gesture processing from
+ * the ContentViewCore.
+ */
+public class GestureStateListener {
+    /**
+     * Called when the pinch gesture starts.
+     */
+    public void onPinchGestureStart() {}
+
+    /**
+     * Called when the pinch gesture ends.
+     */
+    public void onPinchGestureEnd() {}
+
+    /**
+     * Called when the fling gesture is sent.
+     */
+    public void onFlingStartGesture(int vx, int vy, int scrollOffsetY, int scrollExtentY) {}
+
+    /**
+     * Called when the fling cancel gesture is sent.
+     */
+    public void onFlingCancelGesture() {}
+
+    /**
+     * Called when a fling has ended.
+     */
+    public void onFlingEndGesture(int scrollOffsetY, int scrollExtentY) {}
+
+    /**
+     * Called when a fling event was not handled by the renderer.
+     */
+    public void onUnhandledFlingStartEvent() {}
+
+    /**
+     * Called to indicate that a scroll update gesture had been consumed by the page.
+     * This callback is called whenever any layer is scrolled (like a frame or div). It is
+     * not called when a JS touch handler consumes the event (preventDefault), it is not called
+     * for JS-initiated scrolling.
+     */
+    public void onScrollUpdateGestureConsumed() {}
+
+    /*
+     * Called when a scroll gesture has started.
+     */
+    public void onScrollStarted(int scrollOffsetY, int scrollExtentY) {}
+
+    /*
+     * Called when a scroll gesture has stopped.
+     */
+    public void onScrollEnded(int scrollOffsetY, int scrollExtentY) {}
+
+    /*
+     * Called when the scroll offsets or extents may have changed.
+     */
+    public void onScrollOffsetOrExtentChanged(int scrollOffsetY, int scrollExtentY) {}
+}