LatinIME/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java

/*
 * Copyright (C) 2011 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.inputmethod.compat;

import android.content.Context;
import android.os.IBinder;
import android.view.inputmethod.InputMethodManager;

import java.lang.reflect.Method;

public final class InputMethodManagerCompatWrapper {
    // Note that InputMethodManager.switchToNextInputMethod() has been introduced
    // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
    private static final Method METHOD_switchToNextInputMethod = CompatUtils.getMethod(
            InputMethodManager.class, "switchToNextInputMethod", IBinder.class, Boolean.TYPE);

    // Note that InputMethodManager.shouldOfferSwitchingToNextInputMethod() has been introduced
    // in API level 19 (Build.VERSION_CODES.KITKAT).
    private static final Method METHOD_shouldOfferSwitchingToNextInputMethod =
            CompatUtils.getMethod(InputMethodManager.class,
                    "shouldOfferSwitchingToNextInputMethod", IBinder.class);

    public final InputMethodManager mImm;

    public InputMethodManagerCompatWrapper(final Context context) {
        mImm = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
    }

    public boolean switchToNextInputMethod(final IBinder token, final boolean onlyCurrentIme) {
        return (Boolean)CompatUtils.invoke(mImm, false /* defaultValue */,
                METHOD_switchToNextInputMethod, token, onlyCurrentIme);
    }

    public boolean shouldOfferSwitchingToNextInputMethod(final IBinder token) {
        return (Boolean)CompatUtils.invoke(mImm, false /* defaultValue */,
                METHOD_shouldOfferSwitchingToNextInputMethod, token);
    }
}