/*
 * Copyright (C) 2010 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.systemui.statusbar;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.util.Slog;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.WindowManagerImpl;

import java.util.ArrayList;

import com.android.internal.statusbar.IStatusBar;
import com.android.internal.statusbar.IStatusBarService;
import com.android.internal.statusbar.StatusBarIcon;
import com.android.internal.statusbar.StatusBarIconList;
import com.android.internal.statusbar.StatusBarNotification;

import com.android.systemui.SystemUI;
import com.android.systemui.R;

public abstract class StatusBarService extends SystemUI implements CommandQueue.Callbacks {
    static final String TAG = "StatusBarService";
    private static final boolean SPEW = false;

    protected CommandQueue mCommandQueue;
    protected IStatusBarService mBarService;

    // Up-call methods
    protected abstract View makeStatusBarView();
    protected abstract int getStatusBarGravity();

    public void start() {
        // First set up our views and stuff.
        View sb = makeStatusBarView();

        // Connect in to the status bar manager service
        StatusBarIconList iconList = new StatusBarIconList();
        ArrayList<IBinder> notificationKeys = new ArrayList<IBinder>();
        ArrayList<StatusBarNotification> notifications = new ArrayList<StatusBarNotification>();
        mCommandQueue = new CommandQueue(this, iconList);
        mBarService = IStatusBarService.Stub.asInterface(
                ServiceManager.getService(Context.STATUS_BAR_SERVICE));
        int[] switches = new int[4];
        try {
            mBarService.registerStatusBar(mCommandQueue, iconList, notificationKeys, notifications,
                    switches);
        } catch (RemoteException ex) {
            // If the system process isn't there we're doomed anyway.
        }

        disable(switches[0]);
        setLightsOn(switches[1] != 0);
        setMenuKeyVisible(switches[2] != 0);
        setIMEButtonVisible(switches[3] != 0);

        // Set up the initial icon state
        int N = iconList.size();
        int viewIndex = 0;
        for (int i=0; i<N; i++) {
            StatusBarIcon icon = iconList.getIcon(i);
            if (icon != null) {
                addIcon(iconList.getSlot(i), i, viewIndex, icon);
                viewIndex++;
            }
        }

        // Set up the initial notification state
        N = notificationKeys.size();
        if (N == notifications.size()) {
            for (int i=0; i<N; i++) {
                addNotification(notificationKeys.get(i), notifications.get(i));
            }
        } else {
            Log.wtf(TAG, "Notification list length mismatch: keys=" + N
                    + " notifications=" + notifications.size());
        }

        // Put up the view
        final Resources res = mContext.getResources();
        final int height= res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);

        final WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                height,
                WindowManager.LayoutParams.TYPE_STATUS_BAR,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
                    | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
                PixelFormat.RGBX_8888);
        lp.gravity = getStatusBarGravity();
        lp.setTitle("StatusBar");
        // TODO lp.windowAnimations = R.style.Animation_StatusBar;
        WindowManagerImpl.getDefault().addView(sb, lp);

        if (SPEW) {
            Slog.d(TAG, "Added status bar view: gravity=0x" + Integer.toHexString(lp.gravity) 
                   + " icons=" + iconList.size()
                   + " disabled=0x" + Integer.toHexString(switches[0])
                   + " lights=" + switches[1]
                   + " menu=" + switches[2]
                   + " imeButton=" + switches[3]
                   );
        }
    }
}