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package android.inputmethodservice;
import com.android.internal.os.HandlerCaller;
import com.android.internal.view.IInputContext;
import com.android.internal.view.IInputMethod;
import com.android.internal.view.IInputMethodCallback;
import com.android.internal.view.IInputMethodSession;
import com.android.internal.view.InputConnectionWrapper;
import android.content.Context;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;
import android.util.Log;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputBinding;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethod;
import android.view.inputmethod.InputMethodSession;
/**
* Implements the internal IInputMethod interface to convert incoming calls
* on to it back to calls on the public InputMethod interface, scheduling
* them on the main thread of the process.
*/
class IInputMethodWrapper extends IInputMethod.Stub
implements HandlerCaller.Callback {
private static final String TAG = "InputMethodWrapper";
private static final boolean DEBUG = false;
private static final int DO_ATTACH_TOKEN = 10;
private static final int DO_SET_INPUT_CONTEXT = 20;
private static final int DO_UNSET_INPUT_CONTEXT = 30;
private static final int DO_START_INPUT = 32;
private static final int DO_RESTART_INPUT = 34;
private static final int DO_CREATE_SESSION = 40;
private static final int DO_SET_SESSION_ENABLED = 45;
private static final int DO_REVOKE_SESSION = 50;
private static final int DO_SHOW_SOFT_INPUT = 60;
private static final int DO_HIDE_SOFT_INPUT = 70;
final HandlerCaller mCaller;
final InputMethod mInputMethod;
// NOTE: we should have a cache of these.
static class InputMethodSessionCallbackWrapper implements InputMethod.SessionCallback {
final Context mContext;
final IInputMethodCallback mCb;
InputMethodSessionCallbackWrapper(Context context, IInputMethodCallback cb) {
mContext = context;
mCb = cb;
}
public void sessionCreated(InputMethodSession session) {
try {
if (session != null) {
IInputMethodSessionWrapper wrap =
new IInputMethodSessionWrapper(mContext, session);
mCb.sessionCreated(wrap);
} else {
mCb.sessionCreated(null);
}
} catch (RemoteException e) {
}
}
}
public IInputMethodWrapper(Context context, InputMethod inputMethod) {
mCaller = new HandlerCaller(context, this);
mInputMethod = inputMethod;
}
public InputMethod getInternalInputMethod() {
return mInputMethod;
}
public void executeMessage(Message msg) {
switch (msg.what) {
case DO_ATTACH_TOKEN: {
mInputMethod.attachToken((IBinder)msg.obj);
return;
}
case DO_SET_INPUT_CONTEXT: {
mInputMethod.bindInput((InputBinding)msg.obj);
return;
}
case DO_UNSET_INPUT_CONTEXT:
mInputMethod.unbindInput();
return;
case DO_START_INPUT:
mInputMethod.startInput((EditorInfo)msg.obj);
return;
case DO_RESTART_INPUT:
mInputMethod.restartInput((EditorInfo)msg.obj);
return;
case DO_CREATE_SESSION: {
mInputMethod.createSession(new InputMethodSessionCallbackWrapper(
mCaller.mContext, (IInputMethodCallback)msg.obj));
return;
}
case DO_SET_SESSION_ENABLED:
mInputMethod.setSessionEnabled((InputMethodSession)msg.obj,
msg.arg1 != 0);
return;
case DO_REVOKE_SESSION:
mInputMethod.revokeSession((InputMethodSession)msg.obj);
return;
case DO_SHOW_SOFT_INPUT:
mInputMethod.showSoftInput();
return;
case DO_HIDE_SOFT_INPUT:
mInputMethod.hideSoftInput();
return;
}
Log.w(TAG, "Unhandled message code: " + msg.what);
}
public void attachToken(IBinder token) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_ATTACH_TOKEN, token));
}
public void bindInput(InputBinding binding) {
InputConnection ic = new InputConnectionWrapper(
IInputContext.Stub.asInterface(binding.getConnectionToken()));
InputBinding nu = new InputBinding(ic, binding);
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_INPUT_CONTEXT, nu));
}
public void unbindInput() {
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_UNSET_INPUT_CONTEXT));
}
public void startInput(EditorInfo attribute) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_START_INPUT, attribute));
}
public void restartInput(EditorInfo attribute) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_RESTART_INPUT, attribute));
}
public void createSession(IInputMethodCallback callback) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_CREATE_SESSION, callback));
}
public void setSessionEnabled(IInputMethodSession session, boolean enabled) {
try {
InputMethodSession ls = ((IInputMethodSessionWrapper)
session).getInternalInputMethodSession();
mCaller.executeOrSendMessage(mCaller.obtainMessageIO(
DO_SET_SESSION_ENABLED, enabled ? 1 : 0, ls));
} catch (ClassCastException e) {
Log.w(TAG, "Incoming session not of correct type: " + session, e);
}
}
public void revokeSession(IInputMethodSession session) {
try {
InputMethodSession ls = ((IInputMethodSessionWrapper)
session).getInternalInputMethodSession();
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_REVOKE_SESSION, ls));
} catch (ClassCastException e) {
Log.w(TAG, "Incoming session not of correct type: " + session, e);
}
}
public void showSoftInput() {
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_SHOW_SOFT_INPUT));
}
public void hideSoftInput() {
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_HIDE_SOFT_INPUT));
}
}
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