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Commit cf02764d authored by Alexander Hofbauer's avatar Alexander Hofbauer
Browse files

Load a device specific key handler 

Configurable via overlay settings config_deviceKeyHandlerLib and
config_deviceKeyHandlerClass.

Change-Id: Iec99d52f4a665e59cd13939af62f9b5b3becd375
parent 7f3897d1

core/res/res/values/config.xml

+6 −0
Original line number Diff line number Diff line
@@ -792,4 +792,10 @@ 


    <!-- True if the Sym key should open the InputMethodPicker (default) -->

    <bool name="config_symKeyShowsImePicker">true</bool>



    <!-- Path to the library that contains the device key handler -->

    <string name="config_deviceKeyHandlerLib"></string>



    <!-- Name of the device key handler -->

    <string name="config_deviceKeyHandlerClass"></string>

</resources>

policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

+45 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ import android.content.BroadcastReceiver; 
import android.content.ComponentName;

import android.content.ContentResolver;

import android.content.Context;

import android.content.ContextWrapper;

import android.content.Intent;

import android.content.IntentFilter;

import android.content.ServiceConnection;
@@ -65,6 +66,8 @@ import com.android.internal.telephony.ITelephony; 
import com.android.internal.view.BaseInputHandler;

import com.android.internal.widget.PointerLocationView;



import dalvik.system.DexClassLoader;



import android.util.DisplayMetrics;

import android.util.EventLog;

import android.util.Log;
@@ -143,6 +146,9 @@ import java.io.FileDescriptor; 
import java.io.FileReader;

import java.io.IOException;

import java.io.PrintWriter;

import java.lang.reflect.Constructor;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.List;
@@ -255,6 +261,9 @@ public class PhoneWindowManager implements WindowManagerPolicy { 
                KeyEvent.KEYCODE_CALCULATOR, Intent.CATEGORY_APP_CALCULATOR);

    }



    Object mDeviceKeyHandler = null;

    Method mDeviceKeyHandlerMethod = null;



    /**

     * Lock protecting internal state.  Must not call out into window

     * manager with lock held.  (This lock will be acquired in places
@@ -930,6 +939,32 @@ public class PhoneWindowManager implements WindowManagerPolicy { 
        } else {

            screenTurnedOff(WindowManagerPolicy.OFF_BECAUSE_OF_USER);

        }



        String deviceKeyHandlerLib = mContext.getResources().getString(

                com.android.internal.R.string.config_deviceKeyHandlerLib);



        String deviceKeyHandlerClass = mContext.getResources().getString(

                com.android.internal.R.string.config_deviceKeyHandlerClass);



        if (!deviceKeyHandlerLib.equals("") && !deviceKeyHandlerClass.equals("")) {

            DexClassLoader loader =  new DexClassLoader(deviceKeyHandlerLib,

                    new ContextWrapper(mContext).getCacheDir().getAbsolutePath(),

                    null,

                    ClassLoader.getSystemClassLoader());

            try {

                Class<?> klass = loader.loadClass(deviceKeyHandlerClass);

                Constructor<?> constructor = klass.getConstructor(Context.class);

                mDeviceKeyHandler = constructor.newInstance(mContext);

                mDeviceKeyHandlerMethod = klass.getDeclaredMethod(

                        "handleKeyEvent", KeyEvent.class);



                Log.d(TAG, "Loaded device key handler");

            } catch (Exception e) {

                Slog.d(TAG, "Could not get device key Handler "

                        + deviceKeyHandlerClass + " from class "

                        + deviceKeyHandlerLib, e);

            }

        }

    }



    public void setInitialDisplaySize(int width, int height) {
@@ -1828,6 +1863,16 @@ public class PhoneWindowManager implements WindowManagerPolicy { 
            showOrHideRecentAppsDialog(RECENT_APPS_BEHAVIOR_DISMISS_AND_SWITCH);

        }



        if (mDeviceKeyHandler != null && mDeviceKeyHandlerMethod != null) {

            try {

                Integer ret = (Integer) mDeviceKeyHandlerMethod.invoke(

                        mDeviceKeyHandler, event);

                return ret;

            } catch (Exception e) {

                Slog.d(TAG, "Could not invoke device key handler", e);

            }

        }



        // Let the application handle the key.

        return 0;

    }