| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.webkit; |
| |
| import android.net.http.EventHandler; |
| import android.net.http.Headers; |
| import android.net.Uri; |
| |
| /** |
| * This class is a concrete implementation of StreamLoader that loads |
| * "content:" URIs |
| */ |
| class ContentLoader extends StreamLoader { |
| |
| private String mUrl; |
| private String mContentType; |
| |
| /** |
| * Construct a ContentLoader with the specified content URI |
| * |
| * @param rawUrl "content:" url pointing to content to be loaded. This url |
| * is the same url passed in to the WebView. |
| * @param loadListener LoadListener to pass the content to |
| */ |
| ContentLoader(String rawUrl, LoadListener loadListener) { |
| super(loadListener); |
| |
| /* strip off mimetype */ |
| int mimeIndex = rawUrl.lastIndexOf('?'); |
| if (mimeIndex != -1) { |
| mUrl = rawUrl.substring(0, mimeIndex); |
| mContentType = rawUrl.substring(mimeIndex + 1); |
| } else { |
| mUrl = rawUrl; |
| } |
| |
| } |
| |
| private String errString(Exception ex) { |
| String exMessage = ex.getMessage(); |
| String errString = mContext.getString( |
| com.android.internal.R.string.httpErrorFileNotFound); |
| if (exMessage != null) { |
| errString += " " + exMessage; |
| } |
| return errString; |
| } |
| |
| @Override |
| protected boolean setupStreamAndSendStatus() { |
| Uri uri = Uri.parse(mUrl); |
| if (uri == null) { |
| mLoadListener.error( |
| EventHandler.FILE_NOT_FOUND_ERROR, |
| mContext.getString( |
| com.android.internal.R.string.httpErrorBadUrl) + |
| " " + mUrl); |
| return false; |
| } |
| |
| try { |
| mDataStream = mContext.getContentResolver().openInputStream(uri); |
| mLoadListener.status(1, 1, 200, "OK"); |
| } catch (java.io.FileNotFoundException ex) { |
| mLoadListener.error(EventHandler.FILE_NOT_FOUND_ERROR, errString(ex)); |
| return false; |
| } catch (RuntimeException ex) { |
| // readExceptionWithFileNotFoundExceptionFromParcel in DatabaseUtils |
| // can throw a serial of RuntimeException. Catch them all here. |
| mLoadListener.error(EventHandler.FILE_ERROR, errString(ex)); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| protected void buildHeaders(Headers headers) { |
| if (mContentType != null) { |
| headers.setContentType("text/html"); |
| } |
| // content can change, we don't want WebKit to cache it |
| headers.setCacheControl("no-store, no-cache"); |
| } |
| } |