| /* |
| * Copyright (C) 2006 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.graphics.Bitmap; |
| |
| /** |
| * A convenience class for accessing fields in an entry in the back/forward list |
| * of a WebView. Each WebHistoryItem is a snapshot of the requested history |
| * item. Each history item may be updated during the load of a page. |
| * @see WebBackForwardList |
| */ |
| public class WebHistoryItem implements Cloneable { |
| // Global identifier count. |
| private static int sNextId = 0; |
| // Unique identifier. |
| private final int mId; |
| // The title of this item's document. |
| private String mTitle; |
| // The base url of this item. |
| private String mUrl; |
| // The favicon for this item. |
| private Bitmap mFavicon; |
| // The pre-flattened data used for saving the state. |
| private byte[] mFlattenedData; |
| |
| /** |
| * Basic constructor that assigns a unique id to the item. Called by JNI |
| * only. |
| */ |
| private WebHistoryItem() { |
| synchronized (WebHistoryItem.class) { |
| mId = sNextId++; |
| } |
| } |
| |
| /** |
| * Construct a new WebHistoryItem with initial flattened data. |
| * @param data The pre-flattened data coming from restoreState. |
| */ |
| /*package*/ WebHistoryItem(byte[] data) { |
| mUrl = null; // This will be updated natively |
| mFlattenedData = data; |
| synchronized (WebHistoryItem.class) { |
| mId = sNextId++; |
| } |
| } |
| |
| /** |
| * Construct a clone of a WebHistoryItem from the given item. |
| * @param item The history item to clone. |
| */ |
| private WebHistoryItem(WebHistoryItem item) { |
| mUrl = item.mUrl; |
| mTitle = item.mTitle; |
| mFlattenedData = item.mFlattenedData; |
| mFavicon = item.mFavicon; |
| mId = item.mId; |
| } |
| |
| /** |
| * Return an identifier for this history item. If an item is a copy of |
| * another item, the identifiers will be the same even if they are not the |
| * same object. |
| * @return The id for this item. |
| */ |
| public int getId() { |
| return mId; |
| } |
| |
| /** |
| * Return the url of this history item. The url is the base url of this |
| * history item. See getTargetUrl() for the url that is the actual target of |
| * this history item. |
| * @return The base url of this history item. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| public String getUrl() { |
| return mUrl; |
| } |
| |
| /** |
| * Return the document title of this history item. |
| * @return The document title of this history item. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| public String getTitle() { |
| return mTitle; |
| } |
| |
| /** |
| * Return the favicon of this history item or null if no favicon was found. |
| * @return A Bitmap containing the favicon for this history item or null. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| public Bitmap getFavicon() { |
| return mFavicon; |
| } |
| |
| /** |
| * Set the favicon. |
| * @param icon A Bitmap containing the favicon for this history item. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| /*package*/ void setFavicon(Bitmap icon) { |
| mFavicon = icon; |
| } |
| |
| /** |
| * Get the pre-flattened data. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| /*package*/ byte[] getFlattenedData() { |
| return mFlattenedData; |
| } |
| |
| /** |
| * Inflate this item. |
| * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| * to synchronize this method. |
| */ |
| /*package*/ void inflate(int nativeFrame) { |
| inflate(nativeFrame, mFlattenedData); |
| } |
| |
| /** |
| * Clone the history item for use by clients of WebView. |
| */ |
| protected synchronized WebHistoryItem clone() { |
| return new WebHistoryItem(this); |
| } |
| |
| /* Natively inflate this item, this method is called in the WebCore thread. |
| */ |
| private native void inflate(int nativeFrame, byte[] data); |
| |
| /* Called by jni when the item is updated */ |
| private void update(String url, String title, Bitmap favicon, byte[] data) { |
| mUrl = url; |
| mTitle = title; |
| mFavicon = favicon; |
| mFlattenedData = data; |
| } |
| } |