upload android base code part8

android/packages/experimental/TestBack/Android.mk

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+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+LOCAL_PACKAGE_NAME := TestBack
+
+LOCAL_CERTIFICATE := platform
+
+include $(BUILD_PACKAGE)

android/packages/experimental/TestBack/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="foo.bar.testback"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-permission android:name="android.permission.CAN_REQUEST_TOUCH_EXPLORATION_MODE"/>
+    <uses-permission android:name="android.permission.CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY"/>
+
+    <uses-sdk
+        android:minSdkVersion="21" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:allowBackup="false" >
+        <service
+            android:name=".TestBackService"
+            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
+          <intent-filter>
+            <action android:name="android.accessibilityservice.AccessibilityService" />
+          </intent-filter>
+          <meta-data
+              android:name="android.accessibilityservice"
+              android:resource="@xml/accessibilityservice" />
+        </service>
+    </application>
+
+</manifest>

android/packages/experimental/TestBack/res/menu/activity_main.xml

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+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/menu_settings"
+        android:title="@string/menu_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never" />
+</menu>

android/packages/experimental/TestBack/res/values-v11/styles.xml

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+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light" />
+
+</resources>

android/packages/experimental/TestBack/res/values-v14/styles.xml

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+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar" />
+
+</resources>

android/packages/experimental/TestBack/res/values/strings.xml

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+<resources>
+
+    <string name="app_name">TestBack</string>
+    <string name="hello_world">Hello world!</string>
+    <string name="menu_settings">Settings</string>
+    <string name="title_activity_main">MainActivity</string>
+
+</resources>

android/packages/experimental/TestBack/res/values/styles.xml

@@ -0,0 +1,5 @@
+<resources>
+
+    <style name="AppTheme" parent="android:Theme.Light" />
+
+</resources>

android/packages/experimental/TestBack/res/xml/accessibilityservice.xml

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+<accessibility-service  xmlns:android="http://schemas.android.com/apk/res/android"
+     android:accessibilityFeedbackType="feedbackHaptic"
+     android:accessibilityEventTypes="typeAllMask"
+     android:canRetrieveWindowContent="true"
+     android:canRequestTouchExplorationMode="true"
+/>

android/packages/experimental/TestBack/src/foo/bar/testback/TestBackService.java

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+package foo.bar.testback;
+
+import android.accessibilityservice.AccessibilityService;
+import android.accessibilityservice.AccessibilityServiceInfo;
+import android.content.Context;
+import android.util.ArraySet;
+import android.util.Log;
+import android.view.WindowManager;
+import android.view.accessibility.AccessibilityEvent;
+import android.view.accessibility.AccessibilityNodeInfo;
+import android.view.accessibility.AccessibilityWindowInfo;
+import android.widget.Button;
+
+import java.util.List;
+import java.util.Set;
+
+public class TestBackService extends AccessibilityService {
+
+    private static final String LOG_TAG = TestBackService.class.getSimpleName();
+
+    private Button mButton;
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        mButton = new Button(this);
+        mButton.setText("Button 1");
+    }
+
+    @Override
+    public void onAccessibilityEvent(AccessibilityEvent event) {
+//        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
+//            Log.i(LOG_TAG, event.getText().toString());
+//            //dumpWindows();
+//        }
+        if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_HOVER_ENTER) {
+//            Log.i(LOG_TAG, "Click event.isChecked()=" + event.isChecked()
+//                    + ((event.getSource() != null) ? " node.isChecked()="
+//                    + event.getSource().isChecked() : " node=null"));
+
+            AccessibilityNodeInfo source = event.getSource();
+            dumpWindow(source);
+//            AccessibilityNodeInfo node = event.getSource();
+//            if (node != null) {
+//                node.refresh();
+//                Log.i(LOG_TAG, "Clicked: " + node.getClassName() + " clicked:" + node.isChecked());
+//            }
+        }
+    }
+
+    @Override
+    protected boolean onGesture(int gestureId) {
+        switch (gestureId) {
+            case AccessibilityService.GESTURE_SWIPE_DOWN: {
+                showAccessibilityOverlay();
+            } break;
+            case AccessibilityService.GESTURE_SWIPE_UP: {
+                hideAccessibilityOverlay();
+            } break;
+        }
+        return super.onGesture(gestureId);
+    }
+
+    private void showAccessibilityOverlay() {
+        WindowManager.LayoutParams params = new WindowManager.LayoutParams();
+        params.flags = WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
+                | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR
+                | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
+                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
+        params.type = WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY;
+
+        WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
+        windowManager.addView(mButton, params);
+    }
+
+    private void hideAccessibilityOverlay() {
+        WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
+        windowManager.removeView(mButton);
+    }
+
+    private void dumpWindows() {
+        List<AccessibilityWindowInfo> windows = getWindows();
+        final int windowCount = windows.size();
+        for (int i = 0; i < windowCount; i++) {
+            AccessibilityWindowInfo window = windows.get(i);
+            Log.i(LOG_TAG, "=============================");
+            Log.i(LOG_TAG, window.toString());
+
+        }
+    }
+
+    private void dumpWindow(AccessibilityNodeInfo source) {
+        AccessibilityNodeInfo root = source;
+        while (true) {
+            AccessibilityNodeInfo parent = root.getParent();
+            if (parent == null) {
+                break;
+            } else if (parent.equals(root)) {
+                Log.i(LOG_TAG, "Node is own parent:" + root);
+            }
+            root = parent;
+        }
+        dumpTree(root, new ArraySet<AccessibilityNodeInfo>());
+    }
+
+    private void dumpTree(AccessibilityNodeInfo root, Set<AccessibilityNodeInfo> visited) {
+        if (root == null) {
+            return;
+        }
+
+        if (!visited.add(root)) {
+            Log.i(LOG_TAG, "Cycle detected to node:" + root);
+        }
+
+        final int childCount = root.getChildCount();
+        for (int i = 0; i < childCount; i++) {
+            AccessibilityNodeInfo child = root.getChild(i);
+            if (child != null) {
+                AccessibilityNodeInfo parent = child.getParent();
+                if (parent == null) {
+                    Log.e(LOG_TAG, "Child of a node has no parent");
+                } else if (!parent.equals(root)) {
+                    Log.e(LOG_TAG, "Child of a node has wrong parent");
+                }
+                Log.i(LOG_TAG, child.toString());
+            }
+        }
+
+        for (int i = 0; i < childCount; i++) {
+            AccessibilityNodeInfo child = root.getChild(i);
+            dumpTree(child, visited);
+        }
+    }
+
+    @Override
+    public void onInterrupt() {
+        /* ignore */
+    }
+
+    @Override
+    public void onServiceConnected() {
+        AccessibilityServiceInfo info = getServiceInfo();
+        info.flags |= AccessibilityServiceInfo.FLAG_REPORT_VIEW_IDS;
+        info.flags |= AccessibilityServiceInfo.FLAG_REQUEST_TOUCH_EXPLORATION_MODE;
+        info.flags |= AccessibilityServiceInfo.FLAG_RETRIEVE_INTERACTIVE_WINDOWS;
+        setServiceInfo(info);
+    }
+}