chromium/java/com/android/webview/chromium/WebViewChromiumFactoryProvider.java - platform/frameworks/webview - Git at Google

 /*
  * Copyright (C) 2012 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 com.android.webview.chromium;

 import android.app.ActivityThread;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.os.Looper;
 import android.webkit.CookieManager;
 import android.webkit.GeolocationPermissions;
 import android.webkit.WebIconDatabase;
 import android.webkit.WebStorage;
 import android.webkit.WebView;
 import android.webkit.WebViewDatabase;
 import android.webkit.WebViewFactoryProvider;
 import android.webkit.WebViewProvider;

 import org.chromium.android_webview.AwBrowserContext;
 import org.chromium.android_webview.AwBrowserProcess;
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.AwCookieManager;
 import org.chromium.android_webview.AwFormDatabase;
 import org.chromium.android_webview.AwGeolocationPermissions;
 import org.chromium.android_webview.AwQuotaManagerBridge;
 import org.chromium.android_webview.AwSettings;
 import org.chromium.base.PathService;
 import org.chromium.base.ThreadUtils;
 import org.chromium.content.app.LibraryLoader;
 import org.chromium.content.browser.ContentViewStatics;
 import org.chromium.content.browser.ResourceExtractor;
 import org.chromium.content.common.CommandLine;
 import org.chromium.content.common.ProcessInitException;

 public class WebViewChromiumFactoryProvider implements WebViewFactoryProvider {

     private static final String CHROMIUM_PREFS_NAME = "WebViewChromiumPrefs";
     private static final String COMMAND_LINE_FILE = "/data/local/tmp/webview-command-line";

     // Guards accees to the other members, and is notifyAll() signalled on the UI thread
     // when the chromium process has been started.
     private final Object mLock = new Object();

     // Initialization guarded by mLock.
     private AwBrowserContext mBrowserContext;
     private Statics mStaticMethods;
     private GeolocationPermissionsAdapter mGeolocationPermissions;
     private CookieManagerAdapter mCookieManager;
     private WebIconDatabaseAdapter mWebIconDatabase;
     private WebStorageAdapter mWebStorage;
     private WebViewDatabaseAdapter mWebViewDatabase;

     // Read/write protected by mLock.
     private boolean mStarted;

     public WebViewChromiumFactoryProvider() {
         // Load chromium library.
         AwBrowserProcess.loadLibrary();
         // Load glue-layer support library.
         System.loadLibrary("webviewchromium_plat_support");
     }

     private void initPlatSupportLibrary() {
         DrawGLFunctor.setChromiumAwDrawGLFunction(AwContents.getAwDrawGLFunction());
         AwContents.setAwDrawSWFunctionTable(GraphicsUtils.getDrawSWFunctionTable());
         AwContents.setAwDrawGLFunctionTable(GraphicsUtils.getDrawGLFunctionTable());
     }

     private void ensureChromiumStartedLocked() {
         assert Thread.holdsLock(mLock);

         if (mStarted) {  // Early-out for the common case.
             return;
         }

         if (ThreadUtils.runningOnUiThread()) {
             startChromiumLocked();
             return;
         }

         // We must post to the UI thread to cover the case that the user has invoked Chromium
         // startup by using the (thread-safe) CookieManager rather than creating a WebView.
         ThreadUtils.postOnUiThread(new Runnable() {
             @Override
             public void run() {
                 synchronized (mLock) {
                     startChromiumLocked();
                 }
             }
         });
         while (!mStarted) {
             try {
                 // Important: wait() releases |mLock| so the UI thread can take it :-)
                 mLock.wait();
             } catch (InterruptedException e) {
                 // Keep trying... eventually the UI thread will process the task we sent it.
             }
         }
     }

     private void startChromiumLocked() {
         assert Thread.holdsLock(mLock) && ThreadUtils.runningOnUiThread();

         // The post-condition of this method is everything is ready, so notify now to cover all
         // return paths. (Other threads will not wake-up until we release |mLock|, whatever).
         mLock.notifyAll();

         if (mStarted) {
             return;
         }

         if (Build.IS_DEBUGGABLE) {
             CommandLine.initFromFile(COMMAND_LINE_FILE);
         } else {
             CommandLine.init(null);
         }

         CommandLine cl = CommandLine.getInstance();
         // TODO: currently in a relase build the DCHECKs only log. We either need to insall
         // a report handler with SetLogReportHandler to make them assert, or else compile
         // them out of the build altogether (b/8284203). Either way, so long they're
         // compiled in, we may as unconditionally enable them here.
         cl.appendSwitch("enable-dcheck");

         // TODO: Remove when GL is supported by default in the upstream code.
         if (!cl.hasSwitch("disable-webview-gl-mode")) {
             cl.appendSwitch("testing-webview-gl-mode");
         }

         // We don't need to extract any paks because for WebView, they are
         // in the system image.
         ResourceExtractor.setMandatoryPaksToExtract("");

         try {
             LibraryLoader.ensureInitialized();
         } catch(ProcessInitException e) {
             throw new RuntimeException("Error initializing WebView library", e);
         }

         PathService.override(PathService.DIR_MODULE, "/system/lib/");
         // TODO: DIR_RESOURCE_PAKS_ANDROID needs to live somewhere sensible,
         // inlined here for simplicity setting up the HTMLViewer demo. Unfortunately
         // it can't go into base.PathService, as the native constant it refers to
         // lives in the ui/ layer. See ui/base/ui_base_paths.h
         final int DIR_RESOURCE_PAKS_ANDROID = 3003;
         PathService.override(DIR_RESOURCE_PAKS_ANDROID,
                 "/system/framework/webview/paks");

         AwBrowserProcess.start(ActivityThread.currentApplication());
         initPlatSupportLibrary();
         mStarted = true;
     }

     @Override
     public Statics getStatics() {
         synchronized (mLock) {
             if (mStaticMethods == null) {
                 // TODO: Optimization potential: most these methods only need the native library
                 // loaded and initialized, not the entire browser process started.
                 // See also http://b/7009882
                 ensureChromiumStartedLocked();
                 mStaticMethods = new WebViewFactoryProvider.Statics() {
                     @Override
                     public String findAddress(String addr) {
                         return ContentViewStatics.findAddress(addr);
                     }

                     @Override
                     public void setPlatformNotificationsEnabled(boolean enable) {
                         // noop
                     }

                     @Override
                     public String getDefaultUserAgent(Context context) {
                         return AwSettings.getDefaultUserAgent();
                     }
                 };
             }
         }
         return mStaticMethods;
     }

     @Override
     public WebViewProvider createWebView(WebView webView, WebView.PrivateAccess privateAccess) {
         assert Looper.myLooper() == Looper.getMainLooper();
         AwBrowserContext browserContext;
         synchronized (mLock) {
             ensureChromiumStartedLocked();
             ResourceProvider.registerResources(webView.getContext());
             browserContext = getBrowserContextLocked();
         }
         // Make sure GeolocationPermissions is created before creating a webview
         getGeolocationPermissions();
         return new WebViewChromium(webView, privateAccess, browserContext);
     }

     @Override
     public GeolocationPermissions getGeolocationPermissions() {
         synchronized (mLock) {
             if (mGeolocationPermissions == null) {
                 ensureChromiumStartedLocked();
                 mGeolocationPermissions = new GeolocationPermissionsAdapter(
                         getBrowserContextLocked().getGeolocationPermissions());
             }
         }
         return mGeolocationPermissions;
     }

     private AwBrowserContext getBrowserContextLocked() {
         assert Thread.holdsLock(mLock);
         assert mStarted;
         if (mBrowserContext == null) {
             mBrowserContext = new AwBrowserContext(
                     ActivityThread.currentApplication().getSharedPreferences(
                             CHROMIUM_PREFS_NAME, Context.MODE_PRIVATE));
         }
         return mBrowserContext;
     }

     @Override
     public CookieManager getCookieManager() {
         synchronized (mLock) {
             if (mCookieManager == null) {
                 ensureChromiumStartedLocked();
                 mCookieManager = new CookieManagerAdapter(new AwCookieManager());
             }
         }
         return mCookieManager;
     }

     @Override
     public WebIconDatabase getWebIconDatabase() {
         synchronized (mLock) {
             if (mWebIconDatabase == null) {
                 ensureChromiumStartedLocked();
                 mWebIconDatabase = new WebIconDatabaseAdapter();
             }
         }
         return mWebIconDatabase;
     }

     @Override
     public WebStorage getWebStorage() {
         synchronized (mLock) {
             if (mWebStorage == null) {
                 ensureChromiumStartedLocked();
                 mWebStorage = new WebStorageAdapter(AwQuotaManagerBridge.getInstance());
             }
         }
         return mWebStorage;
     }

     @Override
     public WebViewDatabase getWebViewDatabase(Context context) {
         synchronized (mLock) {
             if (mWebViewDatabase == null) {
                 ensureChromiumStartedLocked();
                 AwBrowserContext browserContext = getBrowserContextLocked();
                 mWebViewDatabase = new WebViewDatabaseAdapter(
                         browserContext.getFormDatabase(),
                         browserContext.getHttpAuthDatabase(context));
             }
         }
         return mWebViewDatabase;
     }
 }
	/*
	* Copyright (C) 2012 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 com.android.webview.chromium;

	import android.app.ActivityThread;
	import android.content.Context;
	import android.content.SharedPreferences;
	import android.os.Build;
	import android.os.Looper;
	import android.webkit.CookieManager;
	import android.webkit.GeolocationPermissions;
	import android.webkit.WebIconDatabase;
	import android.webkit.WebStorage;
	import android.webkit.WebView;
	import android.webkit.WebViewDatabase;
	import android.webkit.WebViewFactoryProvider;
	import android.webkit.WebViewProvider;

	import org.chromium.android_webview.AwBrowserContext;
	import org.chromium.android_webview.AwBrowserProcess;
	import org.chromium.android_webview.AwContents;
	import org.chromium.android_webview.AwCookieManager;
	import org.chromium.android_webview.AwFormDatabase;
	import org.chromium.android_webview.AwGeolocationPermissions;
	import org.chromium.android_webview.AwQuotaManagerBridge;
	import org.chromium.android_webview.AwSettings;
	import org.chromium.base.PathService;
	import org.chromium.base.ThreadUtils;
	import org.chromium.content.app.LibraryLoader;
	import org.chromium.content.browser.ContentViewStatics;
	import org.chromium.content.browser.ResourceExtractor;
	import org.chromium.content.common.CommandLine;
	import org.chromium.content.common.ProcessInitException;

	public class WebViewChromiumFactoryProvider implements WebViewFactoryProvider {

	private static final String CHROMIUM_PREFS_NAME = "WebViewChromiumPrefs";
	private static final String COMMAND_LINE_FILE = "/data/local/tmp/webview-command-line";

	// Guards accees to the other members, and is notifyAll() signalled on the UI thread
	// when the chromium process has been started.
	private final Object mLock = new Object();

	// Initialization guarded by mLock.
	private AwBrowserContext mBrowserContext;
	private Statics mStaticMethods;
	private GeolocationPermissionsAdapter mGeolocationPermissions;
	private CookieManagerAdapter mCookieManager;
	private WebIconDatabaseAdapter mWebIconDatabase;
	private WebStorageAdapter mWebStorage;
	private WebViewDatabaseAdapter mWebViewDatabase;

	// Read/write protected by mLock.
	private boolean mStarted;

	public WebViewChromiumFactoryProvider() {
	// Load chromium library.
	AwBrowserProcess.loadLibrary();
	// Load glue-layer support library.
	System.loadLibrary("webviewchromium_plat_support");
	}

	private void initPlatSupportLibrary() {
	DrawGLFunctor.setChromiumAwDrawGLFunction(AwContents.getAwDrawGLFunction());
	AwContents.setAwDrawSWFunctionTable(GraphicsUtils.getDrawSWFunctionTable());
	AwContents.setAwDrawGLFunctionTable(GraphicsUtils.getDrawGLFunctionTable());
	}

	private void ensureChromiumStartedLocked() {
	assert Thread.holdsLock(mLock);

	if (mStarted) { // Early-out for the common case.
	return;
	}

	if (ThreadUtils.runningOnUiThread()) {
	startChromiumLocked();
	return;
	}

	// We must post to the UI thread to cover the case that the user has invoked Chromium
	// startup by using the (thread-safe) CookieManager rather than creating a WebView.
	ThreadUtils.postOnUiThread(new Runnable() {
	@Override
	public void run() {
	synchronized (mLock) {
	startChromiumLocked();
	}
	}
	});
	while (!mStarted) {
	try {
	// Important: wait() releases \|mLock\| so the UI thread can take it :-)
	mLock.wait();
	} catch (InterruptedException e) {
	// Keep trying... eventually the UI thread will process the task we sent it.
	}
	}
	}

	private void startChromiumLocked() {
	assert Thread.holdsLock(mLock) && ThreadUtils.runningOnUiThread();

	// The post-condition of this method is everything is ready, so notify now to cover all
	// return paths. (Other threads will not wake-up until we release \|mLock\|, whatever).
	mLock.notifyAll();

	if (mStarted) {
	return;
	}

	if (Build.IS_DEBUGGABLE) {
	CommandLine.initFromFile(COMMAND_LINE_FILE);
	} else {
	CommandLine.init(null);
	}

	CommandLine cl = CommandLine.getInstance();
	// TODO: currently in a relase build the DCHECKs only log. We either need to insall
	// a report handler with SetLogReportHandler to make them assert, or else compile
	// them out of the build altogether (b/8284203). Either way, so long they're
	// compiled in, we may as unconditionally enable them here.
	cl.appendSwitch("enable-dcheck");

	// TODO: Remove when GL is supported by default in the upstream code.
	if (!cl.hasSwitch("disable-webview-gl-mode")) {
	cl.appendSwitch("testing-webview-gl-mode");
	}

	// We don't need to extract any paks because for WebView, they are
	// in the system image.
	ResourceExtractor.setMandatoryPaksToExtract("");

	try {
	LibraryLoader.ensureInitialized();
	} catch(ProcessInitException e) {
	throw new RuntimeException("Error initializing WebView library", e);
	}

	PathService.override(PathService.DIR_MODULE, "/system/lib/");
	// TODO: DIR_RESOURCE_PAKS_ANDROID needs to live somewhere sensible,
	// inlined here for simplicity setting up the HTMLViewer demo. Unfortunately
	// it can't go into base.PathService, as the native constant it refers to
	// lives in the ui/ layer. See ui/base/ui_base_paths.h
	final int DIR_RESOURCE_PAKS_ANDROID = 3003;
	PathService.override(DIR_RESOURCE_PAKS_ANDROID,
	"/system/framework/webview/paks");

	AwBrowserProcess.start(ActivityThread.currentApplication());
	initPlatSupportLibrary();
	mStarted = true;
	}

	@Override
	public Statics getStatics() {
	synchronized (mLock) {
	if (mStaticMethods == null) {
	// TODO: Optimization potential: most these methods only need the native library
	// loaded and initialized, not the entire browser process started.
	// See also http://b/7009882
	ensureChromiumStartedLocked();
	mStaticMethods = new WebViewFactoryProvider.Statics() {
	@Override
	public String findAddress(String addr) {
	return ContentViewStatics.findAddress(addr);
	}

	@Override
	public void setPlatformNotificationsEnabled(boolean enable) {
	// noop
	}

	@Override
	public String getDefaultUserAgent(Context context) {
	return AwSettings.getDefaultUserAgent();
	}
	};
	}
	}
	return mStaticMethods;
	}

	@Override
	public WebViewProvider createWebView(WebView webView, WebView.PrivateAccess privateAccess) {
	assert Looper.myLooper() == Looper.getMainLooper();
	AwBrowserContext browserContext;
	synchronized (mLock) {
	ensureChromiumStartedLocked();
	ResourceProvider.registerResources(webView.getContext());
	browserContext = getBrowserContextLocked();
	}
	// Make sure GeolocationPermissions is created before creating a webview
	getGeolocationPermissions();
	return new WebViewChromium(webView, privateAccess, browserContext);
	}

	@Override
	public GeolocationPermissions getGeolocationPermissions() {
	synchronized (mLock) {
	if (mGeolocationPermissions == null) {
	ensureChromiumStartedLocked();
	mGeolocationPermissions = new GeolocationPermissionsAdapter(
	getBrowserContextLocked().getGeolocationPermissions());
	}
	}
	return mGeolocationPermissions;
	}

	private AwBrowserContext getBrowserContextLocked() {
	assert Thread.holdsLock(mLock);
	assert mStarted;
	if (mBrowserContext == null) {
	mBrowserContext = new AwBrowserContext(
	ActivityThread.currentApplication().getSharedPreferences(
	CHROMIUM_PREFS_NAME, Context.MODE_PRIVATE));
	}
	return mBrowserContext;
	}

	@Override
	public CookieManager getCookieManager() {
	synchronized (mLock) {
	if (mCookieManager == null) {
	ensureChromiumStartedLocked();
	mCookieManager = new CookieManagerAdapter(new AwCookieManager());
	}
	}
	return mCookieManager;
	}

	@Override
	public WebIconDatabase getWebIconDatabase() {
	synchronized (mLock) {
	if (mWebIconDatabase == null) {
	ensureChromiumStartedLocked();
	mWebIconDatabase = new WebIconDatabaseAdapter();
	}
	}
	return mWebIconDatabase;
	}

	@Override
	public WebStorage getWebStorage() {
	synchronized (mLock) {
	if (mWebStorage == null) {
	ensureChromiumStartedLocked();
	mWebStorage = new WebStorageAdapter(AwQuotaManagerBridge.getInstance());
	}
	}
	return mWebStorage;
	}

	@Override
	public WebViewDatabase getWebViewDatabase(Context context) {
	synchronized (mLock) {
	if (mWebViewDatabase == null) {
	ensureChromiumStartedLocked();
	AwBrowserContext browserContext = getBrowserContextLocked();
	mWebViewDatabase = new WebViewDatabaseAdapter(
	browserContext.getFormDatabase(),
	browserContext.getHttpAuthDatabase(context));
	}
	}
	return mWebViewDatabase;
	}
	}