mirror of
https://github.com/mozilla/gecko-dev.git
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346 lines
11 KiB
Java
346 lines
11 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko;
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import org.mozilla.gecko.db.BrowserDB;
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import org.mozilla.gecko.util.GeckoJarReader;
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import org.mozilla.gecko.util.ThreadUtils;
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import org.mozilla.gecko.util.UiAsyncTask;
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import org.apache.http.HttpEntity;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.entity.BufferedHttpEntity;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.net.http.AndroidHttpClient;
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import android.os.Handler;
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import android.support.v4.util.LruCache;
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import android.util.Log;
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import java.io.InputStream;
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import java.net.MalformedURLException;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Set;
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public class Favicons {
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private static final String LOGTAG = "GeckoFavicons";
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public static final long NOT_LOADING = 0;
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private static int sFaviconSmallSize = -1;
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private static int sFaviconLargeSize = -1;
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private Context mContext;
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private Map<Long,LoadFaviconTask> mLoadTasks;
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private long mNextFaviconLoadId;
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private LruCache<String, Bitmap> mFaviconsCache;
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private static final String USER_AGENT = GeckoApp.mAppContext.getDefaultUAString();
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private AndroidHttpClient mHttpClient;
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public interface OnFaviconLoadedListener {
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public void onFaviconLoaded(String url, Bitmap favicon);
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}
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public Favicons() {
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Log.d(LOGTAG, "Creating Favicons instance");
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mLoadTasks = Collections.synchronizedMap(new HashMap<Long,LoadFaviconTask>());
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mNextFaviconLoadId = 0;
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// Create a favicon memory cache that have up to 1mb of size
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mFaviconsCache = new LruCache<String, Bitmap>(1024 * 1024) {
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@Override
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protected int sizeOf(String url, Bitmap image) {
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return image.getRowBytes() * image.getHeight();
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}
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};
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}
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private synchronized AndroidHttpClient getHttpClient() {
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if (mHttpClient != null)
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return mHttpClient;
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mHttpClient = AndroidHttpClient.newInstance(USER_AGENT);
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return mHttpClient;
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}
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private void dispatchResult(final String pageUrl, final Bitmap image,
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final OnFaviconLoadedListener listener) {
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if (pageUrl != null && image != null)
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putFaviconInMemCache(pageUrl, image);
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// We want to always run the listener on UI thread
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ThreadUtils.postToUiThread(new Runnable() {
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@Override
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public void run() {
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if (listener != null)
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listener.onFaviconLoaded(pageUrl, image);
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}
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});
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}
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public String getFaviconUrlForPageUrl(String pageUrl) {
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return BrowserDB.getFaviconUrlForHistoryUrl(mContext.getContentResolver(), pageUrl);
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}
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public long loadFavicon(String pageUrl, String faviconUrl, boolean persist,
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OnFaviconLoadedListener listener) {
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// Handle the case where page url is empty
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if (pageUrl == null || pageUrl.length() == 0) {
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dispatchResult(null, null, listener);
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return -1;
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}
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// Check if favicon is mem cached
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Bitmap image = getFaviconFromMemCache(pageUrl);
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if (image != null) {
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dispatchResult(pageUrl, image, listener);
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return -1;
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}
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LoadFaviconTask task = new LoadFaviconTask(ThreadUtils.getBackgroundHandler(), pageUrl, faviconUrl, persist, listener);
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long taskId = task.getId();
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mLoadTasks.put(taskId, task);
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task.execute();
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return taskId;
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}
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public Bitmap getFaviconFromMemCache(String pageUrl) {
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return mFaviconsCache.get(pageUrl);
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}
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public void putFaviconInMemCache(String pageUrl, Bitmap image) {
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mFaviconsCache.put(pageUrl, image);
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}
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public void clearMemCache() {
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mFaviconsCache.evictAll();
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}
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public boolean cancelFaviconLoad(long taskId) {
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Log.d(LOGTAG, "Requesting cancelation of favicon load (" + taskId + ")");
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boolean cancelled = false;
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synchronized (mLoadTasks) {
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if (!mLoadTasks.containsKey(taskId))
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return false;
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Log.d(LOGTAG, "Cancelling favicon load (" + taskId + ")");
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LoadFaviconTask task = mLoadTasks.get(taskId);
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cancelled = task.cancel(false);
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}
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return cancelled;
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}
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public void close() {
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Log.d(LOGTAG, "Closing Favicons database");
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// Cancel any pending tasks
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synchronized (mLoadTasks) {
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Set<Long> taskIds = mLoadTasks.keySet();
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Iterator<Long> iter = taskIds.iterator();
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while (iter.hasNext()) {
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long taskId = iter.next();
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cancelFaviconLoad(taskId);
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}
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}
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if (mHttpClient != null)
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mHttpClient.close();
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}
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private static class FaviconsInstanceHolder {
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private static final Favicons INSTANCE = new Favicons();
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}
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public static Favicons getInstance() {
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return Favicons.FaviconsInstanceHolder.INSTANCE;
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}
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public boolean isLargeFavicon(Bitmap image) {
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return image.getWidth() > sFaviconSmallSize || image.getHeight() > sFaviconSmallSize;
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}
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public Bitmap scaleImage(Bitmap image) {
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// If the icon is larger than 16px, scale it to sFaviconLargeSize.
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// Otherwise, scale it to sFaviconSmallSize.
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if (isLargeFavicon(image)) {
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image = Bitmap.createScaledBitmap(image, sFaviconLargeSize, sFaviconLargeSize, false);
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} else {
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image = Bitmap.createScaledBitmap(image, sFaviconSmallSize, sFaviconSmallSize, false);
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}
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return image;
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}
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public void attachToContext(Context context) {
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mContext = context;
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if (sFaviconSmallSize < 0) {
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sFaviconSmallSize = Math.round(mContext.getResources().getDimension(R.dimen.awesomebar_row_favicon_size_small));
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}
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if (sFaviconLargeSize < 0) {
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sFaviconLargeSize = Math.round(mContext.getResources().getDimension(R.dimen.awesomebar_row_favicon_size_large));
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}
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}
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private class LoadFaviconTask extends UiAsyncTask<Void, Void, Bitmap> {
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private long mId;
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private String mPageUrl;
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private String mFaviconUrl;
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private OnFaviconLoadedListener mListener;
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private boolean mPersist;
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public LoadFaviconTask(Handler backgroundThreadHandler,
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String pageUrl, String faviconUrl, boolean persist,
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OnFaviconLoadedListener listener) {
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super(backgroundThreadHandler);
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synchronized(this) {
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mId = ++mNextFaviconLoadId;
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}
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mPageUrl = pageUrl;
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mFaviconUrl = faviconUrl;
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mListener = listener;
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mPersist = persist;
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}
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// Runs in background thread
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private Bitmap loadFaviconFromDb() {
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ContentResolver resolver = mContext.getContentResolver();
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return BrowserDB.getFaviconForUrl(resolver, mPageUrl);
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}
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// Runs in background thread
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private void saveFaviconToDb(final Bitmap favicon) {
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if (!mPersist) {
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return;
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}
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ContentResolver resolver = mContext.getContentResolver();
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BrowserDB.updateFaviconForUrl(resolver, mPageUrl, favicon, mFaviconUrl);
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}
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// Runs in background thread
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private Bitmap downloadFavicon(URL faviconUrl) {
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if (mFaviconUrl.startsWith("jar:jar:")) {
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return GeckoJarReader.getBitmap(mContext.getResources(), mFaviconUrl);
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}
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URI uri;
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try {
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uri = faviconUrl.toURI();
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} catch (URISyntaxException e) {
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Log.d(LOGTAG, "Could not get URI for favicon");
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return null;
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}
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// only get favicons for HTTP/HTTPS
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String scheme = uri.getScheme();
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if (!"http".equals(scheme) && !"https".equals(scheme))
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return null;
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// skia decoder sometimes returns null; workaround is to use BufferedHttpEntity
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// http://groups.google.com/group/android-developers/browse_thread/thread/171b8bf35dbbed96/c3ec5f45436ceec8?lnk=raot
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Bitmap image = null;
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try {
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HttpGet request = new HttpGet(faviconUrl.toURI());
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HttpEntity entity = getHttpClient().execute(request).getEntity();
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BufferedHttpEntity bufferedEntity = new BufferedHttpEntity(entity);
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InputStream contentStream = bufferedEntity.getContent();
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image = BitmapFactory.decodeStream(contentStream);
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} catch (Exception e) {
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Log.e(LOGTAG, "Error reading favicon", e);
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}
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return image;
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}
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@Override
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protected Bitmap doInBackground(Void... unused) {
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Bitmap image = null;
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if (isCancelled())
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return null;
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URL faviconUrl = null;
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// Handle the case of malformed favicon URL
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try {
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// If favicon is empty, fallback to default favicon URI
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if (mFaviconUrl == null || mFaviconUrl.length() == 0) {
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// Handle the case of malformed URL
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URL pageUrl = null;
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pageUrl = new URL(mPageUrl);
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faviconUrl = new URL(pageUrl.getProtocol(), pageUrl.getAuthority(), "/favicon.ico");
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mFaviconUrl = faviconUrl.toString();
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} else {
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faviconUrl = new URL(mFaviconUrl);
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}
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} catch (MalformedURLException e) {
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Log.d(LOGTAG, "The provided favicon URL is not valid");
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return null;
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}
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if (isCancelled())
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return null;
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String storedFaviconUrl = getFaviconUrlForPageUrl(mPageUrl);
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if (storedFaviconUrl != null && storedFaviconUrl.equals(mFaviconUrl)) {
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image = loadFaviconFromDb();
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if (image != null && image.getWidth() > 0 && image.getHeight() > 0)
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return scaleImage(image);
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}
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if (isCancelled())
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return null;
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image = downloadFavicon(faviconUrl);
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if (image != null && image.getWidth() > 0 && image.getHeight() > 0) {
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saveFaviconToDb(image);
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image = scaleImage(image);
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} else {
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image = null;
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}
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return image;
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}
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@Override
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protected void onPostExecute(final Bitmap image) {
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mLoadTasks.remove(mId);
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dispatchResult(mPageUrl, image, mListener);
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}
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@Override
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protected void onCancelled() {
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mLoadTasks.remove(mId);
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// Note that we don't call the listener callback if the
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// favicon load is cancelled.
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}
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public long getId() {
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return mId;
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}
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}
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}
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