HomeProvider.java revision 438bf46c98890b5fe1356e75b4bc759033c6fc57
1 2/* 3 * Copyright (C) 2011 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17package com.android.browser.homepages; 18 19import com.android.browser.BrowserSettings; 20 21import android.content.ContentProvider; 22import android.content.ContentValues; 23import android.content.Context; 24import android.content.res.AssetFileDescriptor; 25import android.database.Cursor; 26import android.net.Uri; 27import android.os.ParcelFileDescriptor; 28import android.util.Log; 29import android.webkit.WebResourceResponse; 30 31import java.io.IOException; 32import java.io.InputStream; 33 34public class HomeProvider extends ContentProvider { 35 36 private static final String TAG = "HomeProvider"; 37 public static final String AUTHORITY = "com.android.browser.home"; 38 public static final String MOST_VISITED = "content://" + AUTHORITY + "/"; 39 40 @Override 41 public int delete(Uri uri, String selection, String[] selectionArgs) { 42 return 0; 43 } 44 45 @Override 46 public String getType(Uri uri) { 47 return null; 48 } 49 50 @Override 51 public Uri insert(Uri uri, ContentValues values) { 52 return null; 53 } 54 55 @Override 56 public boolean onCreate() { 57 return false; 58 } 59 60 @Override 61 public Cursor query(Uri uri, String[] projection, String selection, 62 String[] selectionArgs, String sortOrder) { 63 return null; 64 } 65 66 @Override 67 public int update(Uri uri, ContentValues values, String selection, 68 String[] selectionArgs) { 69 return 0; 70 } 71 72 @Override 73 public ParcelFileDescriptor openFile(Uri uri, String mode) { 74 try { 75 ParcelFileDescriptor[] pipes = ParcelFileDescriptor.createPipe(); 76 final ParcelFileDescriptor write = pipes[1]; 77 AssetFileDescriptor afd = new AssetFileDescriptor(write, 0, -1); 78 new RequestHandler(getContext(), uri, afd.createOutputStream()).start(); 79 return pipes[0]; 80 } catch (IOException e) { 81 Log.e(TAG, "Failed to handle request: " + uri, e); 82 return null; 83 } 84 } 85 86 public static WebResourceResponse shouldInterceptRequest(Context context, 87 String url) { 88 try { 89 boolean useMostVisited = BrowserSettings.getInstance().useMostVisitedHomepage(); 90 if (useMostVisited && url.startsWith("content://")) { 91 Uri uri = Uri.parse(url); 92 if (AUTHORITY.equals(uri.getAuthority())) { 93 InputStream ins = context.getContentResolver() 94 .openInputStream(uri); 95 return new WebResourceResponse("text/html", "utf-8", ins); 96 } 97 } 98 } catch (Exception e) {} 99 return null; 100 } 101 102} 103