src/content/public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.content.browser.framehost;
   6
   7 import org.chromium.base.CalledByNative;
   8 import org.chromium.base.JNINamespace;
   9 import org.chromium.content_public.browser.NavigationController;
  10
  11 /**
  12  * The NavigationControllerImpl Java wrapper to allow communicating with the native
  13  * NavigationControllerImpl object.
  14  */
  15 @JNINamespace("content")
  16 // TODO(tedchoc): Remove the package restriction once this class moves to a non-public content
  17 //                package whose visibility will be enforced via DEPS.
  18 /* package */ class NavigationControllerImpl implements NavigationController {
  19
  20     private long mNativeNavigationControllerAndroid;
  21
  22     private NavigationControllerImpl(long nativeNavigationControllerAndroid) {
  23         mNativeNavigationControllerAndroid = nativeNavigationControllerAndroid;
  24     }
  25
  26     @CalledByNative
  27     private static NavigationControllerImpl create(long nativeNavigationControllerAndroid) {
  28         return new NavigationControllerImpl(nativeNavigationControllerAndroid);
  29     }
  30
  31     @CalledByNative
  32     private void destroy() {
  33         mNativeNavigationControllerAndroid = 0;
  34     }
  35
  36     @Override
  37     public boolean canGoBack() {
  38         return mNativeNavigationControllerAndroid != 0
  39                 && nativeCanGoBack(mNativeNavigationControllerAndroid);
  40     }
  41
  42     @Override
  43     public boolean canGoForward() {
  44         return mNativeNavigationControllerAndroid != 0
  45                 && nativeCanGoForward(mNativeNavigationControllerAndroid);
  46     }
  47
  48     @Override
  49     public boolean canGoToOffset(int offset) {
  50         return mNativeNavigationControllerAndroid != 0
  51                 && nativeCanGoToOffset(mNativeNavigationControllerAndroid, offset);
  52     }
  53
  54     @Override
  55     public void goToOffset(int offset) {
  56         if (mNativeNavigationControllerAndroid != 0) {
  57             nativeGoToOffset(mNativeNavigationControllerAndroid, offset);
  58         }
  59     }
  60
  61     @Override
  62     public void goToNavigationIndex(int index) {
  63         if (mNativeNavigationControllerAndroid != 0) {
  64             nativeGoToNavigationIndex(mNativeNavigationControllerAndroid, index);
  65         }
  66     }
  67
  68     @Override
  69     public void goBack() {
  70         if (mNativeNavigationControllerAndroid != 0) {
  71             nativeGoBack(mNativeNavigationControllerAndroid);
  72         }
  73     }
  74
  75     @Override
  76     public void goForward() {
  77         if (mNativeNavigationControllerAndroid != 0) {
  78             nativeGoForward(mNativeNavigationControllerAndroid);
  79         }
  80     }
  81
  82     @Override
  83     public void loadIfNecessary() {
  84         if (mNativeNavigationControllerAndroid != 0) {
  85             nativeLoadIfNecessary(mNativeNavigationControllerAndroid);
  86         }
  87     }
  88
  89     @Override
  90     public void requestRestoreLoad() {
  91         if (mNativeNavigationControllerAndroid != 0) {
  92             nativeRequestRestoreLoad(mNativeNavigationControllerAndroid);
  93         }
  94     }
  95
  96     @Override
  97     public void reload(boolean checkForRepost) {
  98         if (mNativeNavigationControllerAndroid != 0) {
  99             nativeReload(mNativeNavigationControllerAndroid, checkForRepost);
 100         }
 101     }
 102
 103     @Override
 104     public void reloadIgnoringCache(boolean checkForRepost) {
 105         if (mNativeNavigationControllerAndroid != 0) {
 106             nativeReloadIgnoringCache(mNativeNavigationControllerAndroid, checkForRepost);
 107         }
 108     }
 109
 110     @Override
 111     public void cancelPendingReload() {
 112         if (mNativeNavigationControllerAndroid != 0) {
 113             nativeCancelPendingReload(mNativeNavigationControllerAndroid);
 114         }
 115     }
 116
 117     @Override
 118     public void continuePendingReload() {
 119         if (mNativeNavigationControllerAndroid != 0) {
 120             nativeContinuePendingReload(mNativeNavigationControllerAndroid);
 121         }
 122     }
 123
 124     private native boolean nativeCanGoBack(long nativeNavigationControllerAndroid);
 125     private native boolean nativeCanGoForward(long nativeNavigationControllerAndroid);
 126     private native void nativeLoadIfNecessary(long nativeNavigationControllerAndroid);
 127     private native void nativeRequestRestoreLoad(long nativeNavigationControllerAndroid);
 128     private native boolean nativeCanGoToOffset(
 129             long nativeNavigationControllerAndroid, int offset);
 130     private native void nativeGoBack(long nativeNavigationControllerAndroid);
 131     private native void nativeGoForward(long nativeNavigationControllerAndroid);
 132     private native void nativeGoToOffset(long nativeNavigationControllerAndroid, int offset);
 133     private native void nativeGoToNavigationIndex(
 134             long nativeNavigationControllerAndroid, int index);
 135     private native void nativeCancelPendingReload(long nativeNavigationControllerAndroid);
 136     private native void nativeContinuePendingReload(long nativeNavigationControllerAndroid);
 137     private native void nativeReload(long nativeNavigationControllerAndroid,
 138             boolean checkForRepost);
 139     private native void nativeReloadIgnoringCache(long nativeNavigationControllerAndroid,
 140             boolean checkForRepost);
 141 }