Showing previews UI for Offline Previews

chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java

 // 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.chrome.browser.tab;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.Application;
 import android.content.Context;
@@ skipping 2897 matching lines @@
     }
 
     /**
      * @return True if the offline page is opened.
      */
     public boolean isOfflinePage() {
         return isFrozen() ? false : nativeIsOfflinePage(mNativeTabAndroid);
     }
 
     /**
+     * @return True if the offline page is opened.
+     */
+    public boolean isShowingOfflinePreview() {
+        return isFrozen() ? false : nativeIsShowingOfflinePreview(mNativeTabAndroid);
+    }
+
+    /**
      * @return The offline page if tab currently displays it, null otherwise.
      */
     public OfflinePageItem getOfflinePage() {
         return isFrozen() ? null : nativeGetOfflinePage(mNativeTabAndroid);
     }
 
     /**
      * Shows the list of offline pages. This should only be hit when offline pages feature is
      * enabled.
      */
@@ skipping 351 matching lines @@
     private native void nativeSetActiveNavigationEntryTitleForUrl(long nativeTabAndroid, String url,
             String title);
     private native boolean nativePrint(long nativeTabAndroid);
     private native Bitmap nativeGetFavicon(long nativeTabAndroid);
     private native void nativeCreateHistoricalTab(long nativeTabAndroid);
     private native void nativeUpdateTopControlsState(
             long nativeTabAndroid, int constraints, int current, boolean animate);
     private native void nativeLoadOriginalImage(long nativeTabAndroid);
     private native long nativeGetBookmarkId(long nativeTabAndroid, boolean onlyEditable);
     private native boolean nativeIsOfflinePage(long nativeTabAndroid);
+    private native boolean nativeIsShowingOfflinePreview(long nativeTabAndroid);
     private native OfflinePageItem nativeGetOfflinePage(long nativeTabAndroid);
     private native void nativeSetInterceptNavigationDelegate(long nativeTabAndroid,
             InterceptNavigationDelegate delegate);
     private native void nativeAttachToTabContentManager(long nativeTabAndroid,
             TabContentManager tabContentManager);
     private native void nativeAttachOverlayWebContents(
             long nativeTabAndroid, WebContents webContents, boolean visible);
     private native void nativeDetachOverlayWebContents(
             long nativeTabAndroid, WebContents webContents);
     private native boolean nativeHasPrerenderedUrl(long nativeTabAndroid, String url);
 }