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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.webkit;
     18 
     19 import android.app.Fragment;
     20 import android.os.Bundle;
     21 import android.view.LayoutInflater;
     22 import android.view.View;
     23 import android.view.ViewGroup;
     24 import android.webkit.WebView;
     25 
     26 /**
     27  * A fragment that displays a WebView.
     28  * <p>
     29  * The WebView is automically paused or resumed when the Fragment is paused or resumed.
     30  *
     31  * @deprecated Manually call {@link WebView#onPause()} and {@link WebView#onResume()}
     32  */
     33 @Deprecated
     34 public class WebViewFragment extends Fragment {
     35     private WebView mWebView;
     36     private boolean mIsWebViewAvailable;
     37 
     38     public WebViewFragment() {
     39     }
     40 
     41     /**
     42      * Called to instantiate the view. Creates and returns the WebView.
     43      */
     44     @Override
     45     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     46             Bundle savedInstanceState) {
     47         if (mWebView != null) {
     48             mWebView.destroy();
     49         }
     50         mWebView = new WebView(getContext());
     51         mIsWebViewAvailable = true;
     52         return mWebView;
     53     }
     54 
     55     /**
     56      * Called when the fragment is visible to the user and actively running. Resumes the WebView.
     57      */
     58     @Override
     59     public void onPause() {
     60         super.onPause();
     61         mWebView.onPause();
     62     }
     63 
     64     /**
     65      * Called when the fragment is no longer resumed. Pauses the WebView.
     66      */
     67     @Override
     68     public void onResume() {
     69         mWebView.onResume();
     70         super.onResume();
     71     }
     72 
     73     /**
     74      * Called when the WebView has been detached from the fragment.
     75      * The WebView is no longer available after this time.
     76      */
     77     @Override
     78     public void onDestroyView() {
     79         mIsWebViewAvailable = false;
     80         super.onDestroyView();
     81     }
     82 
     83     /**
     84      * Called when the fragment is no longer in use. Destroys the internal state of the WebView.
     85      */
     86     @Override
     87     public void onDestroy() {
     88         if (mWebView != null) {
     89             mWebView.destroy();
     90             mWebView = null;
     91         }
     92         super.onDestroy();
     93     }
     94 
     95     /**
     96      * Gets the WebView.
     97      */
     98     public WebView getWebView() {
     99         return mIsWebViewAvailable ? mWebView : null;
    100     }
    101 }
    102