Issue 4399 - Add WebView inheritor with ad blocking

README.md

 Adblock Plus Library for Android
 ========================
 
-An Android library project that runs a proxy to block ads.
+An Android library project, tests and demo application for AdblockWebView widget.
 
-Updating the dependencies
--------------------------
+## Updating the dependencies
 
 Adblock Plus Library for Android has dependencies that aren't in this repository.
 To update those, call:
 
     ./ensure_dependencies.py
 
 ## Library
 
-Building with Ant
-------------------
+### Building with Ant
 
-### Requirements
+#### Requirements
 
 * [The Android SDK](http://developer.android.com/sdk)
 * [The Android NDK](https://developer.android.com/tools/sdk/ndk)
 * [Ant](http://ant.apache.org)
 
-### Building
+#### Building
 
 In the 'libadblockplus-android' directory create the file _local.properties_ and set
 _sdk.dir_ and _ndk.dir_ to where you installed it, e.g.:
 
     sdk.dir = /some/where/sdk
     ndk.dir = /some/where/ndk
 
 Then run:
 
     ant debug
 
-Building with Maven
--------------------
+### Building with Maven
 
-### Requirements
+#### Requirements
 
 All 'Building with Ant' requirements and additional requirements:
 
 * [Maven](https://maven.apache.org)
 
-### Building
+#### Building
+
+Go to android sdk directory '/platforms/android-21' and run:
+
+    mvn install:install-file -Dfile=./android.jar -DgroupId=com.google.android -DartifactId=android
+     -Dversion=5.0 -Dpackaging=jar -DgeneratePom=true
 
 Set environment variable ANDROID_HOME to your Android SDK directory or pass it in command-line (below).
-In the 'libadblockplus-android' directory run:
+In the root directory run:
 
         mvn clean install [-Dandroid.sdk.path=/some/where/sdk]
 
-This will generate *.aar library artifact in the 'target' directory. 
+This will generate *.aar library artifacts in the 'libadblockplus-android/target',
+'libadblockplus-android-settings/target', 'libadblockplus-android-webview/target' directories
+and *.apk in the 'libadblockplus-android-webviewapp/target' directory.
 
-Building with Gradle/Android Studio
------------------------------------
+### Building with Gradle/Android Studio
 
-### Requirements
+#### Requirements
 
 * [The Android SDK](http://developer.android.com/sdk)
-* Android SDK Build tools 22.0.1
+* Android SDK Build tools 24.0.1
 * [The Android NDK](https://developer.android.com/tools/sdk/ndk)
 
 Edit 'buildToolsVersion' in 'build.gradle' files if necessary.
 
-### Building from command-line
+#### Building from command-line
 
 In the project root directory create the file _local.properties_ and set
 _sdk.dir_ and _ndk.dir_ to where you installed it, e.g.:
 
     sdk.dir = /some/where/sdk
     ndk.dir = /some/where/ndk
 
 In the project root directory run:
 
     ./gradlew assembleDebug
 
-This will generate *.aar library artifact in 'libadblockplus-android/build/outputs/aar/' directory.
+This will generate *.aar library artifact in the 'libadblockplus-android/build/outputs/aar/' directory.
 
 ## Library tests
 
 ### Requirements
 
 Make sure _Library_ requirements are present.
 
 ### Building with Ant
 
 Set ANDROID_HOME environment variable to your Android SDK directory.
 
-In the 'libadblockplus-android-tests' run:
+In the 'libadblockplus-android-tests' directory run:
 
     ant instrument
 
 ### Testing with Ant
 
 1. Connect an Android device or start the Android Emulator.
 2. In the 'libadblockplus-android-tests' directory run:
 
     ant instrument install test
 
@@ skipping 14 matching lines @@
 To run specific **test method** run:
 
     ant testOnly -DtestClass=full.test.class.name#testMethod
 
 For example:
 
     ant testOnly -DtestClass=org.adblockplus.libadblockplus.tests.NotificationTest#testAddNotification
 
 ### Building with Gradle/Android Studio
 
-Make sure you've created _local.properties_ file to build the library (see above).
+Make sure you've created the _local.properties_ file to build the library (see above).
 In the project root directory run:
 
     ./gradlew assembleDebugAndroidTest
 
-This will generate *.apk in 'libadblockplus-android-tests/build/outputs/apk/' directory.
+This will generate *.apk in the 'libadblockplus-android-tests/build/outputs/apk/' directory.
 
 ### Testing with Gradle/Android Studio
 
 You can select test class/method and click 'Run ..Test'. The library and test app will be
-compiled, installed to emuator/device and launched automatically.
+compiled, installed to emulator/device and launched automatically.
+
+## Settings
+
+You can find adblock fragments in the 'libadblockplus-android-settings' directory:
+* AdblockGeneralSettingsFragment - main fragment
+* AdblockWhitelistedDomainsSettingsFragment - whitelisted domains fragment
+
+### Usage
+
+Create `AdblockEngine` instance with factory methods and `AdblockSettingsStorage` instance.
+You can use `AdblockSettingsSharedPrefsStorage` implementation to store settings in `SharedPreferences`.
+Or you can use Adblock facade:
+
+    Adblock.get().init(this, true, Adblock.PREFERENCE_NAME);
+
+Implement the following interfaces in your settings activity:
+
+* `AdblockGeneralSettingsFragment.Provider`
+* `AdblockGeneralSettingsFragment.Listener`
+* `AdblockWhitelistedDomainsSettingsFragment.Listener`
+
+and return created instance or Adblock facade instances:
+
+    Adblock.get().getEngine();  // engine
+    Adblock.get().getStorage(); // storage
+
+Retain Adblock facade instance in activity `onCreate` in synchronous mode (it may take few seconds):
+
+    Adblock.get().retain(false);
+
+or in asynchronous mode (without current thread lock):
+
+    Adblock.get().retain(true);
+
+Invoke `waitforReady` every time you need AdblockEngine instance if retained in asynchronous mode:
+
+    Adblock.get().waitForReady();
+
+Release Adblock facade instance in activity `onDestroy`:
+
+    Adblock.get().release();
+
+Insert `AdblockGeneralSettingsFragment` fragment instance in runtime to start showing settings UI.
+
+### Building
+
+#### Building with Ant
+
+In the 'libadblockplus-android-settings' directory create the file _local.properties_ and set
+_sdk.dir_ to where you installed it, e.g.:
+
+    sdk.dir = /some/where/sdk
+
+Then run:
+
+    ant debug
+
+
+#### Building with Gradle
+
+In the project root directory run:
+
+    ./gradlew assemble
+
+This will generate *.aar in the 'libadblockplus-android-settings/build/outputs/aar' directory.
+
+## WebView Application
+
+You can find demo application for 'AdblockWebView' class in
+'libadblockplus-android-webviewapp' directory.
+
+### Building
+
+Make sure _Library_ requirements are present.
+
+#### Building with Ant
+
+In the 'libadblockplus-android-webviewapp' directory create the file _local.properties_ and set
+_sdk.dir_ to where you installed it, e.g.:
+
+    sdk.dir = /some/where/sdk
+
+Then run:
+
+    ant debug
+
+This will generate *.apk in the 'libadblockplus-android-webviewapp/bin/' directory.
+
+#### Building with Gradle
+
+In the project root directory run:
+
+    ./gradlew assemble
+
+This will generate *.apk in the 'libadblockplus-android-webviewapp/build/outputs/apk/' directory.
+
+
+## WebView
+
+You can find 'AdblockWebView' class in the 'libadblockplus-android-webview' directory.
+
+`AdblockWebView` class provides built-in ad blocking
+(both resource loading filtering and element hiding) and inherits from Android
+['WebView'](https://developer.android.com/reference/android/webkit/WebView.html).
+
+### Usage
+
+In layout XML:
+
+    <org.adblockplus.libadblockplus.android.webview.AdblockWebView
+        android:id="@+id/main_webview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+In java source code:
+
+    AdblockWebView webView = (AdblockWebView) findViewById(R.id.main_webview);
+
+Use `setAdblockEnabled(boolean adblockEnabled)` to enable/disable adblocking.
+
+Use `setDebugMode(boolean debugMode)` to turn debug log output (Android log and JS console) on/off.
+
+Use `setAllowDrawDelay(int allowDrawDelay)` to set custom delay to start render webpage after 'DOMContentLoaded' event is fired.
+
+Use `setAdblockEngine(AdblockEngine adblockEngine)` to use external adblock engine.
+If adblock engine is not set, it's created by AdblockWebView instance automatically.
+
+Use `dispose(Runnable disposeFinished)` to release resources (**required**).
+Note it can be invoked from background thread.
+
+### Building
+
+#### Building with Ant
+
+In the 'libadblockplus-android-webview' directory create the file _local.properties_ and set
+_sdk.dir_ to where you installed it, e.g.:
+
+    sdk.dir = /some/where/sdk
+
+Then run:
+
+    ant debug
+
+
+#### Building with Gradle
+
+In the project root directory run:
+
+    ./gradlew assemble
+
+This will generate *.aar in the 'libadblockplus-android-webview/build/outputs/aar' directory.
+
+## WebView Application
+
+You can find demo application for 'AdblockWebView' class in the
+'libadblockplus-android-webviewapp' directory.
+
+### Building
+
+Make sure _Library_ requirements are present.
+
+#### Building with Ant
+
+In the 'libadblockplus-android-webviewapp' directory create the file _local.properties_ and set
+_sdk.dir_ to where you installed it, e.g.:
+
+    sdk.dir = /some/where/sdk
+
+Then run:
+
+    ant debug
+
+This will generate *.apk in the 'libadblockplus-android-webviewapp/bin/' directory.
+
+#### Building with Gradle
+
+In the project root directory run:
+
+    ./gradlew assemble
+
+This will generate *.apk in the 'libadblockplus-android-webviewapp/build/outputs/apk/' directory.