/*
 * ConnectBot: simple, powerful, open-source SSH client for Android
 * Copyright 2007 Kenny Root, Jeffrey Sharkey
 *
 * 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.five_ten_sg.connectbot;

import com.five_ten_sg.connectbot.util.PreferenceConstants;
import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;

public abstract class ActionBarWrapper {
    public interface OnMenuVisibilityListener {
        public void onMenuVisibilityChanged(boolean isVisible);
    }

    public static ActionBarWrapper getActionBar(Activity activity) {
        if (PreferenceConstants.PRE_HONEYCOMB)
            return new DummyActionBar();
        else
            return new RealActionBar(activity);
    }

    public void hide() {
    }

    public void show() {
    }

    public void addOnMenuVisibilityListener(OnMenuVisibilityListener listener) {
    }

    public void setDisplayHomeAsUpEnabled(boolean showHomeAsUp) {
    }

    private static class DummyActionBar extends ActionBarWrapper {
    }

    @TargetApi(11)
    private static class RealActionBar extends ActionBarWrapper {
        private final ActionBar actionBar;

        public RealActionBar(Activity activity) {
            actionBar = activity.getActionBar();
        }

        @Override
        public void hide() {
            actionBar.hide();
        }

        @Override
        public void show() {
            actionBar.show();
        }

        @Override
        public void addOnMenuVisibilityListener(final OnMenuVisibilityListener listener) {
            actionBar.addOnMenuVisibilityListener(new ActionBar.OnMenuVisibilityListener() {
                public void onMenuVisibilityChanged(boolean isVisible) {
                    listener.onMenuVisibilityChanged(isVisible);
                }
            });
        }

        @Override
        public void setDisplayHomeAsUpEnabled(boolean showHomeAsUp) {
            actionBar.setDisplayHomeAsUpEnabled(showHomeAsUp);
        }
    }
}