Jesse Greenwald | fcc1f75 | 2012-05-29 15:39:40 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2012 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.graphics.Bitmap; |
| 20 | |
| 21 | import java.net.MalformedURLException; |
| 22 | import java.net.URL; |
| 23 | |
| 24 | /* package */ class WebHistoryItemClassic extends WebHistoryItem implements Cloneable { |
| 25 | // Global identifier count. |
| 26 | private static int sNextId = 0; |
| 27 | // Unique identifier. |
| 28 | private final int mId; |
| 29 | // A point to a native WebHistoryItem instance which contains the actual data |
| 30 | private int mNativeBridge; |
| 31 | // The favicon for this item. |
| 32 | private Bitmap mFavicon; |
| 33 | // The pre-flattened data used for saving the state. |
| 34 | private byte[] mFlattenedData; |
| 35 | // The apple-touch-icon url for use when adding the site to the home screen, |
| 36 | // as obtained from a <link> element in the page. |
| 37 | private String mTouchIconUrlFromLink; |
| 38 | // If no <link> is specified, this holds the default location of the |
| 39 | // apple-touch-icon. |
| 40 | private String mTouchIconUrlServerDefault; |
| 41 | // Custom client data that is not flattened or read by native code. |
| 42 | private Object mCustomData; |
| 43 | |
| 44 | /** |
| 45 | * Basic constructor that assigns a unique id to the item. Called by JNI |
| 46 | * only. |
| 47 | */ |
| 48 | private WebHistoryItemClassic(int nativeBridge) { |
| 49 | synchronized (WebHistoryItemClassic.class) { |
| 50 | mId = sNextId++; |
| 51 | } |
| 52 | mNativeBridge = nativeBridge; |
| 53 | nativeRef(mNativeBridge); |
| 54 | } |
| 55 | |
| 56 | protected void finalize() throws Throwable { |
| 57 | if (mNativeBridge != 0) { |
| 58 | nativeUnref(mNativeBridge); |
| 59 | mNativeBridge = 0; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Construct a new WebHistoryItem with initial flattened data. |
| 65 | * @param data The pre-flattened data coming from restoreState. |
| 66 | */ |
| 67 | /*package*/ WebHistoryItemClassic(byte[] data) { |
| 68 | mFlattenedData = data; |
| 69 | synchronized (WebHistoryItemClassic.class) { |
| 70 | mId = sNextId++; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Construct a clone of a WebHistoryItem from the given item. |
| 76 | * @param item The history item to clone. |
| 77 | */ |
| 78 | private WebHistoryItemClassic(WebHistoryItemClassic item) { |
| 79 | mFlattenedData = item.mFlattenedData; |
| 80 | mId = item.mId; |
| 81 | mFavicon = item.mFavicon; |
| 82 | mNativeBridge = item.mNativeBridge; |
| 83 | if (mNativeBridge != 0) { |
| 84 | nativeRef(mNativeBridge); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | @Deprecated |
| 89 | public int getId() { |
| 90 | return mId; |
| 91 | } |
| 92 | |
| 93 | public String getUrl() { |
| 94 | if (mNativeBridge == 0) return null; |
| 95 | return nativeGetUrl(mNativeBridge); |
| 96 | } |
| 97 | |
| 98 | public String getOriginalUrl() { |
| 99 | if (mNativeBridge == 0) return null; |
| 100 | return nativeGetOriginalUrl(mNativeBridge); |
| 101 | } |
| 102 | |
| 103 | public String getTitle() { |
| 104 | if (mNativeBridge == 0) return null; |
| 105 | return nativeGetTitle(mNativeBridge); |
| 106 | } |
| 107 | |
| 108 | public Bitmap getFavicon() { |
| 109 | if (mFavicon == null && mNativeBridge != 0) { |
| 110 | mFavicon = nativeGetFavicon(mNativeBridge); |
| 111 | } |
| 112 | return mFavicon; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Return the touch icon url. |
| 117 | * If no touch icon <link> tag was specified, returns |
| 118 | * <host>/apple-touch-icon.png. The DownloadTouchIcon class that |
| 119 | * attempts to retrieve the touch icon will handle the case where |
| 120 | * that file does not exist. An icon set by a <link> tag is always |
| 121 | * used in preference to an icon saved on the server. |
| 122 | * @hide |
| 123 | */ |
| 124 | public String getTouchIconUrl() { |
| 125 | if (mTouchIconUrlFromLink != null) { |
| 126 | return mTouchIconUrlFromLink; |
| 127 | } else if (mTouchIconUrlServerDefault != null) { |
| 128 | return mTouchIconUrlServerDefault; |
| 129 | } |
| 130 | |
| 131 | try { |
| 132 | URL url = new URL(getOriginalUrl()); |
| 133 | mTouchIconUrlServerDefault = new URL(url.getProtocol(), url.getHost(), url.getPort(), |
| 134 | "/apple-touch-icon.png").toString(); |
| 135 | } catch (MalformedURLException e) { |
| 136 | return null; |
| 137 | } |
| 138 | return mTouchIconUrlServerDefault; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Return the custom data provided by the client. |
| 143 | * @hide |
| 144 | */ |
| 145 | public Object getCustomData() { |
| 146 | return mCustomData; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Set the custom data field. |
| 151 | * @param data An Object containing any data the client wishes to associate |
| 152 | * with the item. |
| 153 | * @hide |
| 154 | */ |
| 155 | public void setCustomData(Object data) { |
| 156 | // NOTE: WebHistoryItems are used in multiple threads. However, the |
| 157 | // public facing apis are all getters with the exception of this one |
| 158 | // api. Since this api is exclusive to clients, we don't make any |
| 159 | // promises about thread safety. |
| 160 | mCustomData = data; |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Set the favicon. |
| 165 | * @param icon A Bitmap containing the favicon for this history item. |
| 166 | * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| 167 | * to synchronize this method. |
| 168 | */ |
| 169 | /*package*/ void setFavicon(Bitmap icon) { |
| 170 | mFavicon = icon; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Set the touch icon url. Will not overwrite an icon that has been |
| 175 | * set already from a <link> tag, unless the new icon is precomposed. |
| 176 | * @hide |
| 177 | */ |
| 178 | /*package*/ void setTouchIconUrl(String url, boolean precomposed) { |
| 179 | if (precomposed || mTouchIconUrlFromLink == null) { |
| 180 | mTouchIconUrlFromLink = url; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Get the pre-flattened data. |
| 186 | * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| 187 | * to synchronize this method. |
| 188 | */ |
| 189 | /*package*/ byte[] getFlattenedData() { |
| 190 | if (mNativeBridge != 0) { |
| 191 | return nativeGetFlattenedData(mNativeBridge); |
| 192 | } |
| 193 | return mFlattenedData; |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * Inflate this item. |
| 198 | * Note: The VM ensures 32-bit atomic read/write operations so we don't have |
| 199 | * to synchronize this method. |
| 200 | */ |
| 201 | /*package*/ void inflate(int nativeFrame) { |
| 202 | mNativeBridge = inflate(nativeFrame, mFlattenedData); |
| 203 | mFlattenedData = null; |
| 204 | } |
| 205 | |
| 206 | public synchronized WebHistoryItemClassic clone() { |
| 207 | return new WebHistoryItemClassic(this); |
| 208 | } |
| 209 | |
| 210 | /* Natively inflate this item, this method is called in the WebCore thread. |
| 211 | */ |
| 212 | private native int inflate(int nativeFrame, byte[] data); |
| 213 | private native void nativeRef(int nptr); |
| 214 | private native void nativeUnref(int nptr); |
| 215 | private native String nativeGetTitle(int nptr); |
| 216 | private native String nativeGetUrl(int nptr); |
| 217 | private native String nativeGetOriginalUrl(int nptr); |
| 218 | private native byte[] nativeGetFlattenedData(int nptr); |
| 219 | private native Bitmap nativeGetFavicon(int nptr); |
| 220 | |
| 221 | } |