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      1 /*
      2  * Copyright (C) 2007 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.content.Context;
     20 
     21 /**
     22  * This class allows developers to determine whether any WebView used in the
     23  * application has stored any of the following types of browsing data and
     24  * to clear any such stored data for all WebViews in the application.
     25  * <ul>
     26  *  <li>Username/password pairs for web forms</li>
     27  *  <li>HTTP authentication username/password pairs</li>
     28  *  <li>Data entered into text fields (e.g. for autocomplete suggestions)</li>
     29  * </ul>
     30  */
     31 public class WebViewDatabase {
     32     /**
     33      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
     34      */
     35     protected static final String LOGTAG = "webviewdatabase";
     36 
     37     /**
     38      * @hide Only for use by WebViewProvider implementations.
     39      */
     40     protected WebViewDatabase() {
     41     }
     42 
     43     public static WebViewDatabase getInstance(Context context) {
     44         return WebViewFactory.getProvider().getWebViewDatabase(context);
     45     }
     46 
     47     /**
     48      * Gets whether there are any saved username/password pairs for web forms.
     49      * Note that these are unrelated to HTTP authentication credentials.
     50      *
     51      * @return true if there are any saved username/password pairs
     52      * @see WebView#savePassword
     53      * @see #clearUsernamePassworda
     54      * @deprecated Saving passwords in WebView will not be supported in future versions.
     55      */
     56     @Deprecated
     57     public boolean hasUsernamePassword() {
     58         throw new MustOverrideException();
     59     }
     60 
     61     /**
     62      * Clears any saved username/password pairs for web forms.
     63      * Note that these are unrelated to HTTP authentication credentials.
     64      *
     65      * @see WebView#savePassword
     66      * @see #hasUsernamePassword
     67      * @deprecated Saving passwords in WebView will not be supported in future versions.
     68      */
     69     @Deprecated
     70     public void clearUsernamePassword() {
     71         throw new MustOverrideException();
     72     }
     73 
     74     /**
     75      * Gets whether there are any saved credentials for HTTP authentication.
     76      *
     77      * @return whether there are any saved credentials
     78      * @see WebView#getHttpAuthUsernamePassword
     79      * @see WebView#setHttpAuthUsernamePassword
     80      * @see #clearHttpAuthUsernamePassword
     81      */
     82     public boolean hasHttpAuthUsernamePassword() {
     83         throw new MustOverrideException();
     84     }
     85 
     86     /**
     87      * Clears any saved credentials for HTTP authentication.
     88      *
     89      * @see WebView#getHttpAuthUsernamePassword
     90      * @see WebView#setHttpAuthUsernamePassword
     91      * @see #hasHttpAuthUsernamePassword
     92      */
     93     public void clearHttpAuthUsernamePassword() {
     94         throw new MustOverrideException();
     95     }
     96 
     97     /**
     98      * Gets whether there is any saved data for web forms.
     99      *
    100      * @return whether there is any saved data for web forms
    101      * @see #clearFormData
    102      */
    103     public boolean hasFormData() {
    104         throw new MustOverrideException();
    105     }
    106 
    107     /**
    108      * Clears any saved data for web forms.
    109      *
    110      * @see #hasFormData
    111      */
    112     public void clearFormData() {
    113         throw new MustOverrideException();
    114     }
    115 }
    116