xref: /frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

/*
 * 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.phone;

import android.animation.ObjectAnimator;
import android.app.ActivityManager;
import android.app.ActivityManagerNative;
import android.app.Dialog;
import android.app.Notification;
import android.app.PendingIntent;
import android.app.StatusBarManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Resources;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.Handler;
import android.os.Message;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.DisplayMetrics;
import android.util.Slog;
import android.util.Log;
import android.view.Display;
import android.view.Gravity;
import android.view.IWindowManager;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.Surface;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.view.WindowManagerImpl;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RemoteViews;
import android.widget.ScrollView;
import android.widget.TextView;

import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;

import com.android.internal.statusbar.StatusBarIcon;
import com.android.internal.statusbar.StatusBarNotification;

import com.android.systemui.R;
import com.android.systemui.recent.RecentsPanelView;
import com.android.systemui.statusbar.NotificationData;
import com.android.systemui.statusbar.StatusBar;
import com.android.systemui.statusbar.StatusBarIconView;
import com.android.systemui.statusbar.SignalClusterView;
import com.android.systemui.statusbar.policy.DateView;
import com.android.systemui.statusbar.policy.BatteryController;
import com.android.systemui.statusbar.policy.LocationController;
import com.android.systemui.statusbar.policy.NetworkController;

public class PhoneStatusBar extends StatusBar {
    static final String TAG = "PhoneStatusBar";
    public static final boolean DEBUG = false;
    public static final boolean SPEW = false;
    public static final boolean DUMPTRUCK = true; // extra dumpsys info

    // additional instrumentation for testing purposes; intended to be left on during development
    public static final boolean CHATTY = DEBUG || true;

    public static final String ACTION_STATUSBAR_START
            = "com.android.internal.policy.statusbar.START";

    static final int EXPANDED_LEAVE_ALONE = -10000;
    static final int EXPANDED_FULL_OPEN = -10001;

    private static final int MSG_ANIMATE = 1000;
    private static final int MSG_ANIMATE_REVEAL = 1001;
    private static final int MSG_SHOW_INTRUDER = 1002;
    private static final int MSG_HIDE_INTRUDER = 1003;
    private static final int MSG_OPEN_RECENTS_PANEL = 1020;
    private static final int MSG_CLOSE_RECENTS_PANEL = 1021;

    // will likely move to a resource or other tunable param at some point
    private static final int INTRUDER_ALERT_DECAY_MS = 10000;

    // fling gesture tuning parameters, scaled to display density
    private float mSelfExpandVelocityPx; // classic value: 2000px/s
    private float mSelfCollapseVelocityPx; // classic value: 2000px/s (will be negated to collapse "up")
    private float mFlingExpandMinVelocityPx; // classic value: 200px/s
    private float mFlingCollapseMinVelocityPx; // classic value: 200px/s
    private float mCollapseMinDisplayFraction; // classic value: 0.08 (25px/min(320px,480px) on G1)
    private float mExpandMinDisplayFraction; // classic value: 0.5 (drag open halfway to expand)
    private float mFlingGestureMaxXVelocityPx; // classic value: 150px/s

    private float mExpandAccelPx; // classic value: 2000px/s/s
    private float mCollapseAccelPx; // classic value: 2000px/s/s (will be negated to collapse "up")

    PhoneStatusBarPolicy mIconPolicy;

    // These are no longer handled by the policy, because we need custom strategies for them
    BatteryController mBatteryController;
    LocationController mLocationController;
    NetworkController mNetworkController;

    int mNaturalBarHeight = -1;
    int mIconSize = -1;
    int mIconHPadding = -1;
    Display mDisplay;

    IWindowManager mWindowManager;

    PhoneStatusBarView mStatusBarView;
    int mPixelFormat;
    H mHandler = new H();
    Object mQueueLock = new Object();

    // icons
    LinearLayout mIcons;
    IconMerger mNotificationIcons;
    LinearLayout mStatusIcons;

    // expanded notifications
    Dialog mExpandedDialog;
    ExpandedView mExpandedView;
    WindowManager.LayoutParams mExpandedParams;
    ScrollView mScrollView;
    View mExpandedContents;
    // top bar
    TextView mNoNotificationsTitle;
    View mClearButton;
    View mSettingsButton;

    // drag bar
    CloseDragHandle mCloseView;

    // all notifications
    NotificationData mNotificationData = new NotificationData();
    ViewGroup mPile;

    // position
    int[] mPositionTmp = new int[2];
    boolean mExpanded;
    boolean mExpandedVisible;

    // the date view
    DateView mDateView;

    // for immersive activities
    private View mIntruderAlertView;

    // on-screen navigation buttons
    private NavigationBarView mNavigationBarView = null;

    // the tracker view
    TrackingView mTrackingView;
    WindowManager.LayoutParams mTrackingParams;
    int mTrackingPosition; // the position of the top of the tracking view.
    private boolean mPanelSlightlyVisible;

    // ticker
    private Ticker mTicker;
    private View mTickerView;
    private boolean mTicking;

    // Recent applications
    private RecentsPanelView mRecentsPanel;

    // Tracking finger for opening/closing.
    int mEdgeBorder; // corresponds to R.dimen.status_bar_edge_ignore
    boolean mTracking;
    VelocityTracker mVelocityTracker;

    static final int ANIM_FRAME_DURATION = (1000/60);

    boolean mAnimating;
    long mCurAnimationTime;
    float mAnimY;
    float mAnimVel;
    float mAnimAccel;
    long mAnimLastTime;
    boolean mAnimatingReveal = false;
    int mViewDelta;
    int[] mAbsPos = new int[2];

    // for disabling the status bar
    int mDisabled = 0;

    // tracking calls to View.setSystemUiVisibility()
    int mSystemUiVisibility = View.SYSTEM_UI_FLAG_VISIBLE;

    DisplayMetrics mDisplayMetrics = new DisplayMetrics();

    private class ExpandedDialog extends Dialog {
        ExpandedDialog(Context context) {
            super(context, com.android.internal.R.style.Theme_Translucent_NoTitleBar);
        }

        @Override
        public boolean dispatchKeyEvent(KeyEvent event) {
            boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
            switch (event.getKeyCode()) {
            case KeyEvent.KEYCODE_BACK:
                if (!down) {
                    animateCollapse();
                }
                return true;
            }
            return super.dispatchKeyEvent(event);
        }
    }

    @Override
    public void start() {
        mDisplay = ((WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE))
                .getDefaultDisplay();

        mWindowManager = IWindowManager.Stub.asInterface(
                ServiceManager.getService(Context.WINDOW_SERVICE));

        super.start();

        addNavigationBar();

        //addIntruderView();

        // Lastly, call to the icon policy to install/update all the icons.
        mIconPolicy = new PhoneStatusBarPolicy(mContext);
    }

    // ================================================================================
    // Constructing the view
    // ================================================================================
    protected View makeStatusBarView() {
        final Context context = mContext;

        Resources res = context.getResources();

        mDisplay.getMetrics(mDisplayMetrics);
        if (DEBUG) {
            Slog.d(TAG, "makeStatusBarView: mDisplayMetrics=" + mDisplayMetrics);
            mDisplayMetrics = res.getDisplayMetrics();
            Slog.d(TAG, "makeStatusBarView: mDisplayMetrics2=" + mDisplayMetrics);
        }
        loadDimens();

        mIconSize = res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_icon_size);

        ExpandedView expanded = (ExpandedView)View.inflate(context,
                R.layout.status_bar_expanded, null);
        if (DEBUG) {
            expanded.setBackgroundColor(0x6000FF80);
        }
        expanded.mService = this;

        mIntruderAlertView = View.inflate(context, R.layout.intruder_alert, null);
        mIntruderAlertView.setVisibility(View.GONE);
        mIntruderAlertView.setClickable(true);

        PhoneStatusBarView sb = (PhoneStatusBarView)View.inflate(context,
                R.layout.status_bar, null);
        sb.mService = this;
        mStatusBarView = sb;

        try {
            boolean showNav = res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);
            if (showNav) {
                mNavigationBarView =
                    (NavigationBarView) View.inflate(context, R.layout.navigation_bar, null);

                mNavigationBarView.setEnabled((mDisabled & StatusBarManager.DISABLE_NAVIGATION) == 0);

                sb.setOnSystemUiVisibilityChangeListener(
                    new View.OnSystemUiVisibilityChangeListener() {
                        @Override
                        public void onSystemUiVisibilityChange(int visibility) {
                            if (DEBUG) {
                                Slog.d(TAG, "systemUi: " + visibility);
                            }
                            boolean hide = (0 != (visibility & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION));
                            mNavigationBarView.setHidden(hide);
                        }
                    });
            }
        } catch (Resources.NotFoundException ex) {
            // no nav bar for you
        }

        // figure out which pixel-format to use for the status bar.
        mPixelFormat = PixelFormat.TRANSLUCENT;
        Drawable bg = sb.getBackground();
        if (bg != null) {
            mPixelFormat = bg.getOpacity();
        }

        mStatusIcons = (LinearLayout)sb.findViewById(R.id.statusIcons);
        mNotificationIcons = (IconMerger)sb.findViewById(R.id.notificationIcons);
        mIcons = (LinearLayout)sb.findViewById(R.id.icons);
        mTickerView = sb.findViewById(R.id.ticker);

        mExpandedDialog = new ExpandedDialog(context);
        mExpandedView = expanded;
        mPile = (ViewGroup)expanded.findViewById(R.id.latestItems);
        mExpandedContents = mPile; // was: expanded.findViewById(R.id.notificationLinearLayout);
        mNoNotificationsTitle = (TextView)expanded.findViewById(R.id.noNotificationsTitle);
        mNoNotificationsTitle.setVisibility(View.GONE); // disabling for now

        mClearButton = expanded.findViewById(R.id.clear_all_button);
        mClearButton.setOnClickListener(mClearButtonListener);
        mClearButton.setAlpha(0f);
        mDateView = (DateView)expanded.findViewById(R.id.date);
        mSettingsButton = expanded.findViewById(R.id.settings_button);
        mSettingsButton.setOnClickListener(mSettingsButtonListener);
        mScrollView = (ScrollView)expanded.findViewById(R.id.scroll);

        mTicker = new MyTicker(context, sb);

        TickerView tickerView = (TickerView)sb.findViewById(R.id.tickerText);
        tickerView.mTicker = mTicker;

        mTrackingView = (TrackingView)View.inflate(context, R.layout.status_bar_tracking, null);
        mTrackingView.mService = this;
        mCloseView = (CloseDragHandle)mTrackingView.findViewById(R.id.close);
        mCloseView.mService = this;

        mEdgeBorder = res.getDimensionPixelSize(R.dimen.status_bar_edge_ignore);

        // set the inital view visibility
        setAreThereNotifications();

        // Other icons
        mLocationController = new LocationController(mContext); // will post a notification
        mBatteryController = new BatteryController(mContext);
        mBatteryController.addIconView((ImageView)sb.findViewById(R.id.battery));
        mNetworkController = new NetworkController(mContext);
        final SignalClusterView signalCluster =
                (SignalClusterView)sb.findViewById(R.id.signal_cluster);
        mNetworkController.addSignalCluster(signalCluster);
        signalCluster.setNetworkController(mNetworkController);

        // Recents Panel
        updateRecentsPanel();

        // receive broadcasts
        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
        filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        context.registerReceiver(mBroadcastReceiver, filter);

        return sb;
    }

    protected WindowManager.LayoutParams getRecentsLayoutParams(LayoutParams layoutParams) {
        boolean opaque = false;
        WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                layoutParams.width,
                layoutParams.height,
                WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL,
                WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
                | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
                (opaque ? PixelFormat.OPAQUE : PixelFormat.TRANSLUCENT));
        if (ActivityManager.isHighEndGfx(mDisplay)) {
            lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
        }
        lp.gravity = Gravity.BOTTOM | Gravity.LEFT;
        lp.setTitle("RecentsPanel");
        lp.windowAnimations = R.style.Animation_RecentPanel;
        lp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_STATE_UNCHANGED
        | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
        return lp;
    }

    protected void updateRecentsPanel() {
        // Recents Panel
        boolean visible = false;
        if (mRecentsPanel != null) {
            visible = mRecentsPanel.isShowing();
            WindowManagerImpl.getDefault().removeView(mRecentsPanel);
        }

        // Provide RecentsPanelView with a temporary parent to allow layout params to work.
        LinearLayout tmpRoot = new LinearLayout(mContext);
        mRecentsPanel = (RecentsPanelView) LayoutInflater.from(mContext).inflate(
                R.layout.status_bar_recent_panel, tmpRoot, false);

        mRecentsPanel.setOnTouchListener(new TouchOutsideListener(MSG_CLOSE_RECENTS_PANEL,
                mRecentsPanel));
        mRecentsPanel.setVisibility(View.GONE);
        WindowManager.LayoutParams lp = getRecentsLayoutParams(mRecentsPanel.getLayoutParams());

        WindowManagerImpl.getDefault().addView(mRecentsPanel, lp);
        mRecentsPanel.setBar(this);
        if (visible) {
            // need to set visibility to View.GONE earlier since that
            // triggers refreshing application list
            mRecentsPanel.setVisibility(View.VISIBLE);
            mRecentsPanel.show(true, false);
        }

    }

    protected int getStatusBarGravity() {
        return Gravity.TOP | Gravity.FILL_HORIZONTAL;
    }

    public int getStatusBarHeight() {
        final Resources res = mContext.getResources();
        return res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
    }

    private View.OnClickListener mRecentsClickListener = new View.OnClickListener() {
        public void onClick(View v) {
            toggleRecentApps();
        }
    };

    // For small-screen devices (read: phones) that lack hardware navigation buttons
    private void addNavigationBar() {
        if (mNavigationBarView == null) return;

        mNavigationBarView.reorient();

        mNavigationBarView.getRecentsButton().setOnClickListener(mRecentsClickListener);

        WindowManagerImpl.getDefault().addView(
                mNavigationBarView, getNavigationBarLayoutParams());
    }

    private void repositionNavigationBar() {
        if (mNavigationBarView == null) return;

        mNavigationBarView.reorient();

        mNavigationBarView.getRecentsButton().setOnClickListener(mRecentsClickListener);

        WindowManagerImpl.getDefault().updateViewLayout(
                mNavigationBarView, getNavigationBarLayoutParams());
    }

    private WindowManager.LayoutParams getNavigationBarLayoutParams() {
        final int rotation = mDisplay.getRotation();
        final boolean sideways =
            (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270);

        final Resources res = mContext.getResources();
        final int size = res.getDimensionPixelSize(R.dimen.navigation_bar_size);

        WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                sideways ? size : ViewGroup.LayoutParams.MATCH_PARENT,
                sideways ? ViewGroup.LayoutParams.MATCH_PARENT : size,
                WindowManager.LayoutParams.TYPE_NAVIGATION_BAR,
                    0
                    | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                    | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                    | WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH
                    | WindowManager.LayoutParams.FLAG_SLIPPERY,
                PixelFormat.OPAQUE);
        // this will allow the navbar to run in an overlay on devices that support this
        if (ActivityManager.isHighEndGfx(mDisplay)) {
            lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
        }

        lp.setTitle("NavigationBar");
        switch (rotation) {
            case Surface.ROTATION_90:
                // device has been turned 90deg counter-clockwise
                lp.gravity = Gravity.RIGHT | Gravity.FILL_VERTICAL;
                break;
            case Surface.ROTATION_270:
                // device has been turned 90deg clockwise
                lp.gravity = (NavigationBarView.NAVBAR_ALWAYS_AT_RIGHT ? Gravity.RIGHT
                                                                       : Gravity.LEFT)
                             | Gravity.FILL_VERTICAL;
                break;
            default:
                lp.gravity = Gravity.BOTTOM | Gravity.FILL_HORIZONTAL;
                break;
        }
        lp.windowAnimations = 0;

        return lp;
    }

    private void addIntruderView() {
        final int height = getStatusBarHeight();

        WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL,
                WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                    | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                    | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
                    | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
                PixelFormat.TRANSLUCENT);
        lp.gravity = Gravity.TOP | Gravity.FILL_HORIZONTAL;
        lp.y += height * 1.5; // FIXME
        lp.setTitle("IntruderAlert");
        lp.packageName = mContext.getPackageName();
        lp.windowAnimations = R.style.Animation_StatusBar_IntruderAlert;

        WindowManagerImpl.getDefault().addView(mIntruderAlertView, lp);
    }

    public void addIcon(String slot, int index, int viewIndex, StatusBarIcon icon) {
        if (SPEW) Slog.d(TAG, "addIcon slot=" + slot + " index=" + index + " viewIndex=" + viewIndex
                + " icon=" + icon);
        StatusBarIconView view = new StatusBarIconView(mContext, slot, null);
        view.set(icon);
        mStatusIcons.addView(view, viewIndex, new LinearLayout.LayoutParams(mIconSize, mIconSize));
    }

    public void updateIcon(String slot, int index, int viewIndex,
            StatusBarIcon old, StatusBarIcon icon) {
        if (SPEW) Slog.d(TAG, "updateIcon slot=" + slot + " index=" + index + " viewIndex=" + viewIndex
                + " old=" + old + " icon=" + icon);
        StatusBarIconView view = (StatusBarIconView)mStatusIcons.getChildAt(viewIndex);
        view.set(icon);
    }

    public void removeIcon(String slot, int index, int viewIndex) {
        if (SPEW) Slog.d(TAG, "removeIcon slot=" + slot + " index=" + index + " viewIndex=" + viewIndex);
        mStatusIcons.removeViewAt(viewIndex);
    }

    public void addNotification(IBinder key, StatusBarNotification notification) {
        StatusBarIconView iconView = addNotificationViews(key, notification);
        if (iconView == null) return;

        boolean immersive = false;
        try {
            immersive = ActivityManagerNative.getDefault().isTopActivityImmersive();
            if (DEBUG) {
                Slog.d(TAG, "Top activity is " + (immersive?"immersive":"not immersive"));
            }
        } catch (RemoteException ex) {
        }
        if (immersive) {
            if ((notification.notification.flags & Notification.FLAG_HIGH_PRIORITY) != 0) {
                Slog.d(TAG, "Presenting high-priority notification in immersive activity");
                // special new transient ticker mode
                // 1. Populate mIntruderAlertView

                ImageView alertIcon = (ImageView) mIntruderAlertView.findViewById(R.id.alertIcon);
                TextView alertText = (TextView) mIntruderAlertView.findViewById(R.id.alertText);
                alertIcon.setImageDrawable(StatusBarIconView.getIcon(
                    alertIcon.getContext(),
                    iconView.getStatusBarIcon()));
                alertText.setText(notification.notification.tickerText);

                View button = mIntruderAlertView.findViewById(R.id.intruder_alert_content);
                button.setOnClickListener(
                    new NotificationClicker(notification.notification.contentIntent,
                        notification.pkg, notification.tag, notification.id));

                // 2. Animate mIntruderAlertView in
                mHandler.sendEmptyMessage(MSG_SHOW_INTRUDER);

                // 3. Set alarm to age the notification off (TODO)
                mHandler.removeMessages(MSG_HIDE_INTRUDER);
                mHandler.sendEmptyMessageDelayed(MSG_HIDE_INTRUDER, INTRUDER_ALERT_DECAY_MS);
            }
        } else if (notification.notification.fullScreenIntent != null) {
            // not immersive & a full-screen alert should be shown
            Slog.d(TAG, "Notification has fullScreenIntent; sending fullScreenIntent");
            try {
                notification.notification.fullScreenIntent.send();
            } catch (PendingIntent.CanceledException e) {
            }
        } else {
            // usual case: status bar visible & not immersive

            // show the ticker
            tick(notification);
        }

        // Recalculate the position of the sliding windows and the titles.
        setAreThereNotifications();
        updateExpandedViewPos(EXPANDED_LEAVE_ALONE);
    }

    public void updateNotification(IBinder key, StatusBarNotification notification) {
        if (DEBUG) Slog.d(TAG, "updateNotification(" + key + " -> " + notification + ")");

        final NotificationData.Entry oldEntry = mNotificationData.findByKey(key);
        if (oldEntry == null) {
            Slog.w(TAG, "updateNotification for unknown key: " + key);
            return;
        }

        final StatusBarNotification oldNotification = oldEntry.notification;
        final RemoteViews oldContentView = oldNotification.notification.contentView;

        final RemoteViews contentView = notification.notification.contentView;


        if (DEBUG) {
            Slog.d(TAG, "old notification: when=" + oldNotification.notification.when
                    + " ongoing=" + oldNotification.isOngoing()
                    + " expanded=" + oldEntry.expanded
                    + " contentView=" + oldContentView
                    + " rowParent=" + oldEntry.row.getParent());
            Slog.d(TAG, "new notification: when=" + notification.notification.when
                    + " ongoing=" + oldNotification.isOngoing()
                    + " contentView=" + contentView);
        }


        // Can we just reapply the RemoteViews in place?  If when didn't change, the order
        // didn't change.
        boolean contentsUnchanged = oldEntry.expanded != null
                && contentView != null && oldContentView != null
                && contentView.getPackage() != null
                && oldContentView.getPackage() != null
                && oldContentView.getPackage().equals(contentView.getPackage())
                && oldContentView.getLayoutId() == contentView.getLayoutId();
        ViewGroup rowParent = (ViewGroup) oldEntry.row.getParent();
        boolean orderUnchanged = notification.notification.when==oldNotification.notification.when
                && notification.priority == oldNotification.priority;
                // priority now encompasses isOngoing()
        boolean isFirstAnyway = rowParent.indexOfChild(oldEntry.row) == 0;
        if (contentsUnchanged && (orderUnchanged || isFirstAnyway)) {
            if (DEBUG) Slog.d(TAG, "reusing notification for key: " + key);
            oldEntry.notification = notification;
            try {
                // Reapply the RemoteViews
                contentView.reapply(mContext, oldEntry.content);
                // update the contentIntent
                final PendingIntent contentIntent = notification.notification.contentIntent;
                if (contentIntent != null) {
                    final View.OnClickListener listener = new NotificationClicker(contentIntent,
                            notification.pkg, notification.tag, notification.id);
                    oldEntry.largeIcon.setOnClickListener(listener);
                    oldEntry.content.setOnClickListener(listener);
                } else {
                    oldEntry.largeIcon.setOnClickListener(null);
                    oldEntry.content.setOnClickListener(null);
                }
                // Update the icon.
                final StatusBarIcon ic = new StatusBarIcon(notification.pkg,
                        notification.notification.icon, notification.notification.iconLevel,
                        notification.notification.number,
                        notification.notification.tickerText);
                if (!oldEntry.icon.set(ic)) {
                    handleNotificationError(key, notification, "Couldn't update icon: " + ic);
                    return;
                }
                // Update the large icon
                if (notification.notification.largeIcon != null) {
                    oldEntry.largeIcon.setImageBitmap(notification.notification.largeIcon);
                } else {
                    oldEntry.largeIcon.getLayoutParams().width = 0;
                    oldEntry.largeIcon.setVisibility(View.INVISIBLE);
                }
            }
            catch (RuntimeException e) {
                // It failed to add cleanly.  Log, and remove the view from the panel.
                Slog.w(TAG, "Couldn't reapply views for package " + contentView.getPackage(), e);
                removeNotificationViews(key);
                addNotificationViews(key, notification);
            }
        } else {
            if (SPEW) Slog.d(TAG, "not reusing notification");
            removeNotificationViews(key);
            addNotificationViews(key, notification);
        }

        // Restart the ticker if it's still running
        if (notification.notification.tickerText != null
                && !TextUtils.equals(notification.notification.tickerText,
                    oldEntry.notification.notification.tickerText)) {
            tick(notification);
        }

        // Recalculate the position of the sliding windows and the titles.
        setAreThereNotifications();
        updateExpandedViewPos(EXPANDED_LEAVE_ALONE);
    }

    public void removeNotification(IBinder key) {
        if (SPEW) Slog.d(TAG, "removeNotification key=" + key);
        StatusBarNotification old = removeNotificationViews(key);

        if (old != null) {
            // Cancel the ticker if it's still running
            mTicker.removeEntry(old);

            // Recalculate the position of the sliding windows and the titles.
            updateExpandedViewPos(EXPANDED_LEAVE_ALONE);
        }

        setAreThereNotifications();
    }

    @Override
    protected void onConfigurationChanged(Configuration newConfig) {
        updateRecentsPanel();
    }


    View[] makeNotificationView(StatusBarNotification notification, ViewGroup parent) {
        Notification n = notification.notification;
        RemoteViews remoteViews = n.contentView;
        if (remoteViews == null) {
            return null;
        }

        // create the row view
        LayoutInflater inflater = (LayoutInflater)mContext.getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);
        View row = inflater.inflate(R.layout.status_bar_notification_row, parent, false);

        // wire up the veto button
        View vetoButton = row.findViewById(R.id.veto);
        if (notification.isClearable()) {
            final String _pkg = notification.pkg;
            final String _tag = notification.tag;
            final int _id = notification.id;
            vetoButton.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {
                        try {
                            mBarService.onNotificationClear(_pkg, _tag, _id);
                        } catch (RemoteException ex) {
                            // system process is dead if we're here.
                        }
                    }
                });
        } else {
            if ((notification.notification.flags & Notification.FLAG_ONGOING_EVENT) == 0) {
                vetoButton.setVisibility(View.INVISIBLE);
            } else {
                vetoButton.setVisibility(View.GONE);
            }
        }

        // the large icon
        ImageView largeIcon = (ImageView)row.findViewById(R.id.large_icon);
        if (notification.notification.largeIcon != null) {
            largeIcon.setImageBitmap(notification.notification.largeIcon);
        } else {
            largeIcon.getLayoutParams().width = 0;
            largeIcon.setVisibility(View.INVISIBLE);
        }

        // bind the click event to the content area
        ViewGroup content = (ViewGroup)row.findViewById(R.id.content);
        content.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
        content.setOnFocusChangeListener(mFocusChangeListener);
        PendingIntent contentIntent = n.contentIntent;
        if (contentIntent != null) {
            final View.OnClickListener listener = new NotificationClicker(contentIntent,
                    notification.pkg, notification.tag, notification.id);
            largeIcon.setOnClickListener(listener);
            content.setOnClickListener(listener);
        } else {
            largeIcon.setOnClickListener(null);
            content.setOnClickListener(null);
        }

        View expanded = null;
        Exception exception = null;
        try {
            expanded = remoteViews.apply(mContext, content);
        }
        catch (RuntimeException e) {
            exception = e;
        }
        if (expanded == null) {
            String ident = notification.pkg + "/0x" + Integer.toHexString(notification.id);
            Slog.e(TAG, "couldn't inflate view for notification " + ident, exception);
            return null;
        } else {
            content.addView(expanded);
            row.setDrawingCacheEnabled(true);
        }

        return new View[] { row, content, expanded };
    }

    StatusBarIconView addNotificationViews(IBinder key, StatusBarNotification notification) {
        if (DEBUG) {
            Slog.d(TAG, "addNotificationViews(key=" + key + ", notification=" + notification);
        }
        // Construct the icon.
        final StatusBarIconView iconView = new StatusBarIconView(mContext,
                notification.pkg + "/0x" + Integer.toHexString(notification.id),
                notification.notification);
        iconView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

        final StatusBarIcon ic = new StatusBarIcon(notification.pkg,
                    notification.notification.icon,
                    notification.notification.iconLevel,
                    notification.notification.number,
                    notification.notification.tickerText);
        if (!iconView.set(ic)) {
            handleNotificationError(key, notification, "Couldn't create icon: " + ic);
            return null;
        }
        // Construct the expanded view.
        NotificationData.Entry entry = new NotificationData.Entry(key, notification, iconView);
        if (!inflateViews(entry, mPile)) {
            handleNotificationError(key, notification, "Couldn't expand RemoteViews for: "
                    + notification);
            return null;
        }

        // Add the expanded view and icon.
        int pos = mNotificationData.add(entry);
        if (DEBUG) {
            Slog.d(TAG, "addNotificationViews: added at " + pos);
        }
        updateNotificationIcons();

        return iconView;
    }

    private void loadNotificationShade() {
        int N = mNotificationData.size();

        ArrayList<View> toShow = new ArrayList<View>();

        for (int i=0; i<N; i++) {
            View row = mNotificationData.get(N-i-1).row;
            toShow.add(row);
        }

        ArrayList<View> toRemove = new ArrayList<View>();
        for (int i=0; i<mPile.getChildCount(); i++) {
            View child = mPile.getChildAt(i);
            if (!toShow.contains(child)) {
                toRemove.add(child);
            }
        }

        for (View remove : toRemove) {
            mPile.removeView(remove);
        }

        for (int i=0; i<toShow.size(); i++) {
            View v = toShow.get(i);
            if (v.getParent() == null) {
                mPile.addView(v, 0); // the notification shade has newest at the top
            }
        }
    }

    private void reloadAllNotificationIcons() {
        if (mNotificationIcons == null) return;
        mNotificationIcons.removeAllViews();
        updateNotificationIcons();
    }

    private void updateNotificationIcons() {
        loadNotificationShade();

        final LinearLayout.LayoutParams params
            = new LinearLayout.LayoutParams(mIconSize + 2*mIconHPadding, mNaturalBarHeight);

        int N = mNotificationData.size();

        if (DEBUG) {
            Slog.d(TAG, "refreshing icons: " + N + " notifications, mNotificationIcons=" + mNotificationIcons);
        }

        ArrayList<View> toShow = new ArrayList<View>();

        for (int i=0; i<N; i++) {
            toShow.add(mNotificationData.get(N-i-1).icon);
        }

        ArrayList<View> toRemove = new ArrayList<View>();
        for (int i=0; i<mNotificationIcons.getChildCount(); i++) {
            View child = mNotificationIcons.getChildAt(i);
            if (!toShow.contains(child)) {
                toRemove.add(child);
            }
        }

        for (View remove : toRemove) {
            mNotificationIcons.removeView(remove);
        }

        for (int i=0; i<toShow.size(); i++) {
            View v = toShow.get(i);
            if (v.getParent() == null) {
                mNotificationIcons.addView(v, i, params);
            }
        }
    }

    void workAroundBadLayerDrawableOpacity(View v) {
        LayerDrawable d = (LayerDrawable)v.getBackground();
        if (d == null) return;
        v.setBackgroundDrawable(null);
        d.setOpacity(PixelFormat.TRANSLUCENT);
        v.setBackgroundDrawable(d);
    }

    private boolean inflateViews(NotificationData.Entry entry, ViewGroup parent) {
        StatusBarNotification sbn = entry.notification;
        RemoteViews remoteViews = sbn.notification.contentView;
        if (remoteViews == null) {
            return false;
        }

        // create the row view
        LayoutInflater inflater = (LayoutInflater)mContext.getSystemService(
                Context.LAYOUT_INFLATER_SERVICE);
        View row = inflater.inflate(R.layout.status_bar_notification_row, parent, false);
        workAroundBadLayerDrawableOpacity(row);
        View vetoButton = row.findViewById(R.id.veto);
        if (entry.notification.isClearable()) {
            final String _pkg = sbn.pkg;
            final String _tag = sbn.tag;
            final int _id = sbn.id;
            vetoButton.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {
                        try {
                            mBarService.onNotificationClear(_pkg, _tag, _id);
                        } catch (RemoteException ex) {
                            // system process is dead if we're here.
                        }
                    }
                });
        } else {
            if ((sbn.notification.flags & Notification.FLAG_ONGOING_EVENT) == 0) {
                vetoButton.setVisibility(View.INVISIBLE);
                vetoButton.setContentDescription("VETO");
            } else {
                vetoButton.setVisibility(View.GONE);
            }
        }
        vetoButton.setContentDescription(mContext.getString(
                R.string.accessibility_remove_notification));

        // the large icon
        ImageView largeIcon = (ImageView)row.findViewById(R.id.large_icon);
        if (sbn.notification.largeIcon != null) {
            largeIcon.setImageBitmap(sbn.notification.largeIcon);
            largeIcon.setContentDescription(sbn.notification.tickerText);
        } else {
            largeIcon.getLayoutParams().width = 0;
            largeIcon.setVisibility(View.INVISIBLE);
        }
        largeIcon.setContentDescription(sbn.notification.tickerText);

        // bind the click event to the content area
        ViewGroup content = (ViewGroup)row.findViewById(R.id.content);
        // XXX: update to allow controls within notification views
        content.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
//        content.setOnFocusChangeListener(mFocusChangeListener);
        PendingIntent contentIntent = sbn.notification.contentIntent;
        if (contentIntent != null) {
            final View.OnClickListener listener = new NotificationClicker(contentIntent,
                    sbn.pkg, sbn.tag, sbn.id);
            largeIcon.setOnClickListener(listener);
            content.setOnClickListener(listener);
        } else {
            largeIcon.setOnClickListener(null);
            content.setOnClickListener(null);
        }

        View expanded = null;
        Exception exception = null;
        try {
            expanded = remoteViews.apply(mContext, content);
        }
        catch (RuntimeException e) {
            exception = e;
        }
        if (expanded == null) {
            final String ident = sbn.pkg + "/0x" + Integer.toHexString(sbn.id);
            Slog.e(TAG, "couldn't inflate view for notification " + ident, exception);
            return false;
        } else {
            content.addView(expanded);
            row.setDrawingCacheEnabled(true);
        }

        entry.row = row;
        entry.content = content;
        entry.expanded = expanded;
        entry.largeIcon = largeIcon;

        return true;
    }

    StatusBarNotification removeNotificationViews(IBinder key) {
        NotificationData.Entry entry = mNotificationData.remove(key);
        if (entry == null) {
            Slog.w(TAG, "removeNotification for unknown key: " + key);
            return null;
        }
        // Remove the expanded view.
        ViewGroup rowParent = (ViewGroup)entry.row.getParent();
        if (rowParent != null) rowParent.removeView(entry.row);
        updateNotificationIcons();

        return entry.notification;
    }

    private void setAreThereNotifications() {
        final boolean any = mNotificationData.size() > 0;

        final boolean clearable = any && mNotificationData.hasClearableItems();

        if (DEBUG) {
            Slog.d(TAG, "setAreThereNotifications: N=" + mNotificationData.size()
                    + " any=" + any + " clearable=" + clearable);
        }

        if (mClearButton.isShown()) {
            if (clearable != (mClearButton.getAlpha() == 1.0f)) {
                ObjectAnimator.ofFloat(mClearButton, "alpha",
                        clearable ? 1.0f : 0.0f)
                    .setDuration(250)
                    .start();
            }
        } else {
            mClearButton.setAlpha(clearable ? 1.0f : 0.0f);
        }

        /*
        if (mNoNotificationsTitle.isShown()) {
            if (any != (mNoNotificationsTitle.getAlpha() == 0.0f)) {
                ObjectAnimator a = ObjectAnimator.ofFloat(mNoNotificationsTitle, "alpha",
                            (any ? 0.0f : 0.75f));
                a.setDuration(any ? 0 : 500);
                a.setStartDelay(any ? 250 : 1000);
                a.start();
            }
        } else {
            mNoNotificationsTitle.setAlpha(any ? 0.0f : 0.75f);
        }
        */
    }

    public void showClock(boolean show) {
        View clock = mStatusBarView.findViewById(R.id.clock);
        if (clock != null) {
            clock.setVisibility(show ? View.VISIBLE : View.GONE);
        }
    }

    /**
     * State is one or more of the DISABLE constants from StatusBarManager.
     */
    public void disable(int state) {
        final int old = mDisabled;
        final int diff = state ^ old;
        mDisabled = state;

        if (DEBUG) {
            Slog.d(TAG, String.format("disable: 0x%08x -> 0x%08x (diff: 0x%08x)",
                old, state, diff));
        }

        if ((diff & StatusBarManager.DISABLE_CLOCK) != 0) {
            boolean show = (state & StatusBarManager.DISABLE_CLOCK) == 0;
            showClock(show);
        }
        if ((diff & StatusBarManager.DISABLE_EXPAND) != 0) {
            if ((state & StatusBarManager.DISABLE_EXPAND) != 0) {
                Slog.d(TAG, "DISABLE_EXPAND: yes");
                animateCollapse();
            }
        }

        if ((diff & (StatusBarManager.DISABLE_NAVIGATION | StatusBarManager.DISABLE_BACK)) != 0) {
            setNavigationVisibility(state &
                    (StatusBarManager.DISABLE_NAVIGATION | StatusBarManager.DISABLE_BACK));
        }

        if ((diff & StatusBarManager.DISABLE_NOTIFICATION_ICONS) != 0) {
            if ((state & StatusBarManager.DISABLE_NOTIFICATION_ICONS) != 0) {
                Slog.d(TAG, "DISABLE_NOTIFICATION_ICONS: yes");
                if (mTicking) {
                    mTicker.halt();
                } else {
                    setNotificationIconVisibility(false, com.android.internal.R.anim.fade_out);
                }
            } else {
                Slog.d(TAG, "DISABLE_NOTIFICATION_ICONS: no");
                if (!mExpandedVisible) {
                    setNotificationIconVisibility(true, com.android.internal.R.anim.fade_in);
                }
            }
        } else if ((diff & StatusBarManager.DISABLE_NOTIFICATION_TICKER) != 0) {
            if (mTicking && (state & StatusBarManager.DISABLE_NOTIFICATION_TICKER) != 0) {
                Slog.d(TAG, "DISABLE_NOTIFICATION_TICKER: yes");
                mTicker.halt();
            }
        }
    }

    private void setNavigationVisibility(int visibility) {
        boolean disableNavigation = ((visibility & StatusBarManager.DISABLE_NAVIGATION) != 0);
        boolean disableBack = ((visibility & StatusBarManager.DISABLE_BACK) != 0);

        Slog.i(TAG, "DISABLE_BACK: " + (disableBack ? "yes" : "no"));
        Slog.i(TAG, "DISABLE_NAVIGATION: " + (disableNavigation ? "yes" : "no"));

        if (mNavigationBarView != null) {
            if (disableNavigation && disableBack) {
                mNavigationBarView.setEnabled(false);
            } else {
                mNavigationBarView.getBackButton().setEnabled(!disableBack);
                mNavigationBarView.getHomeButton().setEnabled(!disableNavigation);
                mNavigationBarView.getRecentsButton().setEnabled(!disableNavigation);

                mNavigationBarView.setEnabled(true);
            }
        }

        if (disableNavigation) {
            // close recents if it's visible
            mHandler.removeMessages(MSG_CLOSE_RECENTS_PANEL);
            mHandler.sendEmptyMessage(MSG_CLOSE_RECENTS_PANEL);
        }
    }

    /**
     * All changes to the status bar and notifications funnel through here and are batched.
     */
    private class H extends Handler {
        public void handleMessage(Message m) {
            switch (m.what) {
                case MSG_ANIMATE:
                    doAnimation();
                    break;
                case MSG_ANIMATE_REVEAL:
                    doRevealAnimation();
                    break;
                case MSG_SHOW_INTRUDER:
                    setIntruderAlertVisibility(true);
                    break;
                case MSG_HIDE_INTRUDER:
                    setIntruderAlertVisibility(false);
                    break;
                case MSG_OPEN_RECENTS_PANEL:
                    if (DEBUG) Slog.d(TAG, "opening recents panel");
                    if (mRecentsPanel != null) {
                        disable(StatusBarManager.DISABLE_BACK);
                        mRecentsPanel.setVisibility(View.VISIBLE);
                        mRecentsPanel.show(true, true);
                    }
                    break;
                case MSG_CLOSE_RECENTS_PANEL:
                    if (DEBUG) Slog.d(TAG, "closing recents panel");
                    if (mRecentsPanel != null && mRecentsPanel.isShowing()) {
                        disable(StatusBarManager.DISABLE_NONE);
                        mRecentsPanel.show(false, true);
                    }
                    break;
            }
        }
    }

    View.OnFocusChangeListener mFocusChangeListener = new View.OnFocusChangeListener() {
        public void onFocusChange(View v, boolean hasFocus) {
            // Because 'v' is a ViewGroup, all its children will be (un)selected
            // too, which allows marqueeing to work.
            v.setSelected(hasFocus);
        }
    };

    private void makeExpandedVisible() {
        if (SPEW) Slog.d(TAG, "Make expanded visible: expanded visible=" + mExpandedVisible);
        if (mExpandedVisible) {
            return;
        }
        mExpandedVisible = true;
        visibilityChanged(true);

        updateExpandedViewPos(EXPANDED_LEAVE_ALONE);
        mExpandedParams.flags &= ~WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        mExpandedParams.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
        if (DEBUG) {
            Slog.d(TAG, "makeExpandedVisible: expanded params = " + mExpandedParams);
        }
        mExpandedDialog.getWindow().setAttributes(mExpandedParams);
        mExpandedView.requestFocus(View.FOCUS_FORWARD);
        mTrackingView.setVisibility(View.VISIBLE);
    }

    public void animateExpand() {
        if (SPEW) Slog.d(TAG, "Animate expand: expanded=" + mExpanded);
        if ((mDisabled & StatusBarManager.DISABLE_EXPAND) != 0) {
            return ;
        }
        if (mExpanded) {
            return;
        }

        prepareTracking(0, true);
        performFling(0, mSelfExpandVelocityPx, true);
    }

    public void animateCollapse() {
        animateCollapse(false);
    }

    public void animateCollapse(boolean excludeRecents) {
        if (SPEW) {
            Slog.d(TAG, "animateCollapse(): mExpanded=" + mExpanded
                    + " mExpandedVisible=" + mExpandedVisible
                    + " mExpanded=" + mExpanded
                    + " mAnimating=" + mAnimating
                    + " mAnimY=" + mAnimY
                    + " mAnimVel=" + mAnimVel);
        }

        if (!excludeRecents) {
            mHandler.removeMessages(MSG_CLOSE_RECENTS_PANEL);
            mHandler.sendEmptyMessage(MSG_CLOSE_RECENTS_PANEL);
        }

        if (!mExpandedVisible) {
            return;
        }

        int y;
        if (mAnimating) {
            y = (int)mAnimY;
        } else {
            y = mDisplayMetrics.heightPixels-1;
        }
        // Let the fling think that we're open so it goes in the right direction
        // and doesn't try to re-open the windowshade.
        mExpanded = true;
        prepareTracking(y, false);
        performFling(y, -mSelfCollapseVelocityPx, true);
    }

    void performExpand() {
        if (SPEW) Slog.d(TAG, "performExpand: mExpanded=" + mExpanded);
        if ((mDisabled & StatusBarManager.DISABLE_EXPAND) != 0) {
            return ;
        }
        if (mExpanded) {
            return;
        }

        mExpanded = true;
        makeExpandedVisible();
        updateExpandedViewPos(EXPANDED_FULL_OPEN);

        if (false) postStartTracing();
    }

    void performCollapse() {
        if (SPEW) Slog.d(TAG, "performCollapse: mExpanded=" + mExpanded
                + " mExpandedVisible=" + mExpandedVisible);

        if (!mExpandedVisible) {
            return;
        }
        mExpandedVisible = false;
        visibilityChanged(false);
        mExpandedParams.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        mExpandedParams.flags &= ~WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
        mExpandedDialog.getWindow().setAttributes(mExpandedParams);
        mTrackingView.setVisibility(View.GONE);

        if ((mDisabled & StatusBarManager.DISABLE_NOTIFICATION_ICONS) == 0) {
            setNotificationIconVisibility(true, com.android.internal.R.anim.fade_in);
        }

        if (!mExpanded) {
            return;
        }
        mExpanded = false;
    }

    void doAnimation() {
        if (mAnimating) {
            if (SPEW) Slog.d(TAG, "doAnimation");
            if (SPEW) Slog.d(TAG, "doAnimation before mAnimY=" + mAnimY);
            incrementAnim();
            if (SPEW) Slog.d(TAG, "doAnimation after  mAnimY=" + mAnimY);
            if (mAnimY >= mDisplayMetrics.heightPixels-1) {
                if (SPEW) Slog.d(TAG, "Animation completed to expanded state.");
                mAnimating = false;
                updateExpandedViewPos(EXPANDED_FULL_OPEN);
                performExpand();
            }
            else if (mAnimY < mStatusBarView.getHeight()) {
                if (SPEW) Slog.d(TAG, "Animation completed to collapsed state.");
                mAnimating = false;
                updateExpandedViewPos(0);
                performCollapse();
            }
            else {
                updateExpandedViewPos((int)mAnimY);
                mCurAnimationTime += ANIM_FRAME_DURATION;
                mHandler.sendMessageAtTime(mHandler.obtainMessage(MSG_ANIMATE), mCurAnimationTime);
            }
        }
    }

    void stopTracking() {
        mTracking = false;
        mVelocityTracker.recycle();
        mVelocityTracker = null;
    }

    void incrementAnim() {
        long now = SystemClock.uptimeMillis();
        float t = ((float)(now - mAnimLastTime)) / 1000;            // ms -> s
        final float y = mAnimY;
        final float v = mAnimVel;                                   // px/s
        final float a = mAnimAccel;                                 // px/s/s
        mAnimY = y + (v*t) + (0.5f*a*t*t);                          // px
        mAnimVel = v + (a*t);                                       // px/s
        mAnimLastTime = now;                                        // ms
        //Slog.d(TAG, "y=" + y + " v=" + v + " a=" + a + " t=" + t + " mAnimY=" + mAnimY
        //        + " mAnimAccel=" + mAnimAccel);
    }

    void doRevealAnimation() {
        final int h = mCloseView.getHeight() + mStatusBarView.getHeight();
        if (mAnimatingReveal && mAnimating && mAnimY < h) {
            incrementAnim();
            if (mAnimY >= h) {
                mAnimY = h;
                updateExpandedViewPos((int)mAnimY);
            } else {
                updateExpandedViewPos((int)mAnimY);
                mCurAnimationTime += ANIM_FRAME_DURATION;
                mHandler.sendMessageAtTime(mHandler.obtainMessage(MSG_ANIMATE_REVEAL),
                        mCurAnimationTime);
            }
        }
    }

    void prepareTracking(int y, boolean opening) {
        if (CHATTY) {
            Slog.d(TAG, "panel: beginning to track the user's touch, y=" + y + " opening=" + opening);
        }

        // there are some race conditions that cause this to be inaccurate; let's recalculate it any
        // time we're about to drag the panel
        updateExpandedSize();

        mTracking = true;
        mVelocityTracker = VelocityTracker.obtain();
        if (opening) {
            mAnimAccel = mExpandAccelPx;
            mAnimVel = mFlingExpandMinVelocityPx;
            mAnimY = mStatusBarView.getHeight();
            updateExpandedViewPos((int)mAnimY);
            mAnimating = true;
            mAnimatingReveal = true;
            mHandler.removeMessages(MSG_ANIMATE);
            mHandler.removeMessages(MSG_ANIMATE_REVEAL);
            long now = SystemClock.uptimeMillis();
            mAnimLastTime = now;
            mCurAnimationTime = now + ANIM_FRAME_DURATION;
            mAnimating = true;
            mHandler.sendMessageAtTime(mHandler.obtainMessage(MSG_ANIMATE_REVEAL),
                    mCurAnimationTime);
            makeExpandedVisible();
        } else {
            // it's open, close it?
            if (mAnimating) {
                mAnimating = false;
                mHandler.removeMessages(MSG_ANIMATE);
            }
            updateExpandedViewPos(y + mViewDelta);
        }
    }

    void performFling(int y, float vel, boolean always) {
        if (CHATTY) {
            Slog.d(TAG, "panel: will fling, y=" + y + " vel=" + vel);
        }

        mAnimatingReveal = false;

        mAnimY = y;
        mAnimVel = vel;

        //Slog.d(TAG, "starting with mAnimY=" + mAnimY + " mAnimVel=" + mAnimVel);

        if (mExpanded) {
            if (!always && (
                    vel > mFlingCollapseMinVelocityPx
                    || (y > (mDisplayMetrics.heightPixels*(1f-mCollapseMinDisplayFraction)) &&
                        vel > -mFlingExpandMinVelocityPx))) {
                // We are expanded, but they didn't move sufficiently to cause
                // us to retract.  Animate back to the expanded position.
                mAnimAccel = mExpandAccelPx;
                if (vel < 0) {
                    mAnimVel = 0;
                }
            }
            else {
                // We are expanded and are now going to animate away.
                mAnimAccel = -mCollapseAccelPx;
                if (vel > 0) {
                    mAnimVel = 0;
                }
            }
        } else {
            if (always || (
                    vel > mFlingExpandMinVelocityPx
                    || (y > (mDisplayMetrics.heightPixels*(1f-mExpandMinDisplayFraction)) &&
                        vel > -mFlingCollapseMinVelocityPx))) {
                // We are collapsed, and they moved enough to allow us to
                // expand.  Animate in the notifications.
                mAnimAccel = mExpandAccelPx;
                if (vel < 0) {
                    mAnimVel = 0;
                }
            }
            else {
                // We are collapsed, but they didn't move sufficiently to cause
                // us to retract.  Animate back to the collapsed position.
                mAnimAccel = -mCollapseAccelPx;
                if (vel > 0) {
                    mAnimVel = 0;
                }
            }
        }
        //Slog.d(TAG, "mAnimY=" + mAnimY + " mAnimVel=" + mAnimVel
        //        + " mAnimAccel=" + mAnimAccel);

        long now = SystemClock.uptimeMillis();
        mAnimLastTime = now;
        mCurAnimationTime = now + ANIM_FRAME_DURATION;
        mAnimating = true;
        mHandler.removeMessages(MSG_ANIMATE);
        mHandler.removeMessages(MSG_ANIMATE_REVEAL);
        mHandler.sendMessageAtTime(mHandler.obtainMessage(MSG_ANIMATE), mCurAnimationTime);
        stopTracking();
    }

    boolean interceptTouchEvent(MotionEvent event) {
        if (SPEW) {
            Slog.d(TAG, "Touch: rawY=" + event.getRawY() + " event=" + event + " mDisabled="
                + mDisabled);
        } else if (CHATTY) {
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                Slog.d(TAG, String.format(
                            "panel: ACTION_DOWN at (%f, %f) mDisabled=0x%08x",
                            event.getRawX(), event.getRawY(), mDisabled));
            }
        }

        if ((mDisabled & StatusBarManager.DISABLE_EXPAND) != 0) {
            return false;
        }

        final int statusBarSize = mStatusBarView.getHeight();
        final int hitSize = statusBarSize*2;
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            final int y = (int)event.getRawY();

            if (!mExpanded) {
                mViewDelta = statusBarSize - y;
            } else {
                mTrackingView.getLocationOnScreen(mAbsPos);
                mViewDelta = mAbsPos[1] + mTrackingView.getHeight() - y;
            }
            if ((!mExpanded && y < hitSize) ||
                    (mExpanded && y > (mDisplayMetrics.heightPixels-hitSize))) {

                // We drop events at the edge of the screen to make the windowshade come
                // down by accident less, especially when pushing open a device with a keyboard
                // that rotates (like g1 and droid)
                int x = (int)event.getRawX();
                final int edgeBorder = mEdgeBorder;
                if (x >= edgeBorder && x < mDisplayMetrics.widthPixels - edgeBorder) {
                    prepareTracking(y, !mExpanded);// opening if we're not already fully visible
                    mVelocityTracker.addMovement(event);
                }
            }
        } else if (mTracking) {
            mVelocityTracker.addMovement(event);
            final int minY = statusBarSize + mCloseView.getHeight();
            if (event.getAction() == MotionEvent.ACTION_MOVE) {
                int y = (int)event.getRawY();
                if (mAnimatingReveal && y < minY) {
                    // nothing
                } else  {
                    mAnimatingReveal = false;
                    updateExpandedViewPos(y + mViewDelta);
                }
            } else if (event.getAction() == MotionEvent.ACTION_UP) {
                mVelocityTracker.computeCurrentVelocity(1000);

                float yVel = mVelocityTracker.getYVelocity();
                boolean negative = yVel < 0;

                float xVel = mVelocityTracker.getXVelocity();
                if (xVel < 0) {
                    xVel = -xVel;
                }
                if (xVel > mFlingGestureMaxXVelocityPx) {
                    xVel = mFlingGestureMaxXVelocityPx; // limit how much we care about the x axis
                }

                float vel = (float)Math.hypot(yVel, xVel);
                if (negative) {
                    vel = -vel;
                }

                if (CHATTY) {
                    Slog.d(TAG, String.format("gesture: vraw=(%f,%f) vnorm=(%f,%f) vlinear=%f",
                        mVelocityTracker.getXVelocity(),
                        mVelocityTracker.getYVelocity(),
                        xVel, yVel,
                        vel));
                }

                performFling((int)event.getRawY(), vel, false);
            }

        }
        return false;
    }

    @Override // CommandQueue
    public void setSystemUiVisibility(int vis) {
        final int old = mSystemUiVisibility;
        final int diff = vis ^ old;

        if (diff != 0) {
            mSystemUiVisibility = vis;

            if (0 != (diff & View.SYSTEM_UI_FLAG_LOW_PROFILE)) {
                final boolean lightsOut = (0 != (vis & View.SYSTEM_UI_FLAG_LOW_PROFILE));
                if (lightsOut) {
                    animateCollapse();
                }
                if (mNavigationBarView != null) {
                    mNavigationBarView.setLowProfile(lightsOut);
                }
            }

            notifyUiVisibilityChanged();
        }
    }

    public void setLightsOn(boolean on) {
        Log.v(TAG, "setLightsOn(" + on + ")");
        if (on) {
            setSystemUiVisibility(mSystemUiVisibility & ~View.SYSTEM_UI_FLAG_LOW_PROFILE);
        } else {
            setSystemUiVisibility(mSystemUiVisibility | View.SYSTEM_UI_FLAG_LOW_PROFILE);
        }
    }

    private void notifyUiVisibilityChanged() {
        try {
            mWindowManager.statusBarVisibilityChanged(mSystemUiVisibility);
        } catch (RemoteException ex) {
        }
    }

    public void topAppWindowChanged(boolean showMenu) {
        if (DEBUG) {
            Slog.d(TAG, (showMenu?"showing":"hiding") + " the MENU button");
        }
        if (mNavigationBarView != null) {
            mNavigationBarView.getMenuButton().setVisibility(showMenu
                ? View.VISIBLE : View.INVISIBLE);
        }

        // See above re: lights-out policy for legacy apps.
        if (showMenu) setLightsOn(true);
    }

    // Not supported
    public void setImeWindowStatus(IBinder token, int vis, int backDisposition) { }
    @Override
    public void setHardKeyboardStatus(boolean available, boolean enabled) { }

    public NotificationClicker makeClicker(PendingIntent intent, String pkg, String tag, int id) {
        return new NotificationClicker(intent, pkg, tag, id);
    }

    private class NotificationClicker implements View.OnClickListener {
        private PendingIntent mIntent;
        private String mPkg;
        private String mTag;
        private int mId;

        NotificationClicker(PendingIntent intent, String pkg, String tag, int id) {
            mIntent = intent;
            mPkg = pkg;
            mTag = tag;
            mId = id;
        }

        public void onClick(View v) {
            try {
                // The intent we are sending is for the application, which
                // won't have permission to immediately start an activity after
                // the user switches to home.  We know it is safe to do at this
                // point, so make sure new activity switches are now allowed.
                ActivityManagerNative.getDefault().resumeAppSwitches();
            } catch (RemoteException e) {
            }

            if (mIntent != null) {
                int[] pos = new int[2];
                v.getLocationOnScreen(pos);
                Intent overlay = new Intent();
                overlay.setSourceBounds(
                        new Rect(pos[0], pos[1], pos[0]+v.getWidth(), pos[1]+v.getHeight()));
                try {
                    mIntent.send(mContext, 0, overlay);
                } catch (PendingIntent.CanceledException e) {
                    // the stack trace isn't very helpful here.  Just log the exception message.
                    Slog.w(TAG, "Sending contentIntent failed: " + e);
                }
            }

            try {
                mBarService.onNotificationClick(mPkg, mTag, mId);
            } catch (RemoteException ex) {
                // system process is dead if we're here.
            }

            // close the shade if it was open
            animateCollapse();

            // If this click was on the intruder alert, hide that instead
            mHandler.sendEmptyMessage(MSG_HIDE_INTRUDER);
        }
    }

    private void tick(StatusBarNotification n) {
        // Show the ticker if one is requested. Also don't do this
        // until status bar window is attached to the window manager,
        // because...  well, what's the point otherwise?  And trying to
        // run a ticker without being attached will crash!
        if (n.notification.tickerText != null && mStatusBarView.getWindowToken() != null) {
            if (0 == (mDisabled & (StatusBarManager.DISABLE_NOTIFICATION_ICONS
                            | StatusBarManager.DISABLE_NOTIFICATION_TICKER))) {
                mTicker.addEntry(n);
            }
        }
    }

    /**
     * Cancel this notification and tell the StatusBarManagerService / NotificationManagerService
     * about the failure.
     *
     * WARNING: this will call back into us.  Don't hold any locks.
     */
    void handleNotificationError(IBinder key, StatusBarNotification n, String message) {
        removeNotification(key);
        try {
            mBarService.onNotificationError(n.pkg, n.tag, n.id, n.uid, n.initialPid, message);
        } catch (RemoteException ex) {
            // The end is nigh.
        }
    }

    private class MyTicker extends Ticker {
        MyTicker(Context context, View sb) {
            super(context, sb);
        }

        @Override
        public void tickerStarting() {
            mTicking = true;
            mIcons.setVisibility(View.GONE);
            mTickerView.setVisibility(View.VISIBLE);
            mTickerView.startAnimation(loadAnim(com.android.internal.R.anim.push_up_in, null));
            mIcons.startAnimation(loadAnim(com.android.internal.R.anim.push_up_out, null));
        }

        @Override
        public void tickerDone() {
            mIcons.setVisibility(View.VISIBLE);
            mTickerView.setVisibility(View.GONE);
            mIcons.startAnimation(loadAnim(com.android.internal.R.anim.push_down_in, null));
            mTickerView.startAnimation(loadAnim(com.android.internal.R.anim.push_down_out,
                        mTickingDoneListener));
        }

        public void tickerHalting() {
            mIcons.setVisibility(View.VISIBLE);
            mTickerView.setVisibility(View.GONE);
            mIcons.startAnimation(loadAnim(com.android.internal.R.anim.fade_in, null));
            mTickerView.startAnimation(loadAnim(com.android.internal.R.anim.fade_out,
                        mTickingDoneListener));
        }
    }

    Animation.AnimationListener mTickingDoneListener = new Animation.AnimationListener() {;
        public void onAnimationEnd(Animation animation) {
            mTicking = false;
        }
        public void onAnimationRepeat(Animation animation) {
        }
        public void onAnimationStart(Animation animation) {
        }
    };

    private Animation loadAnim(int id, Animation.AnimationListener listener) {
        Animation anim = AnimationUtils.loadAnimation(mContext, id);
        if (listener != null) {
            anim.setAnimationListener(listener);
        }
        return anim;
    }

    public String viewInfo(View v) {
        return "(" + v.getLeft() + "," + v.getTop() + ")(" + v.getRight() + "," + v.getBottom()
                + " " + v.getWidth() + "x" + v.getHeight() + ")";
    }

    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
        synchronized (mQueueLock) {
            pw.println("Current Status Bar state:");
            pw.println("  mExpanded=" + mExpanded
                    + ", mExpandedVisible=" + mExpandedVisible);
            pw.println("  mTicking=" + mTicking);
            pw.println("  mTracking=" + mTracking);
            pw.println("  mAnimating=" + mAnimating
                    + ", mAnimY=" + mAnimY + ", mAnimVel=" + mAnimVel
                    + ", mAnimAccel=" + mAnimAccel);
            pw.println("  mCurAnimationTime=" + mCurAnimationTime
                    + " mAnimLastTime=" + mAnimLastTime);
            pw.println("  mAnimatingReveal=" + mAnimatingReveal
                    + " mViewDelta=" + mViewDelta);
            pw.println("  mDisplayMetrics=" + mDisplayMetrics);
            pw.println("  mExpandedParams: " + mExpandedParams);
            pw.println("  mExpandedView: " + viewInfo(mExpandedView));
            pw.println("  mExpandedDialog: " + mExpandedDialog);
            pw.println("  mTrackingParams: " + mTrackingParams);
            pw.println("  mTrackingView: " + viewInfo(mTrackingView));
            pw.println("  mPile: " + viewInfo(mPile));
            pw.println("  mNoNotificationsTitle: " + viewInfo(mNoNotificationsTitle));
            pw.println("  mCloseView: " + viewInfo(mCloseView));
            pw.println("  mTickerView: " + viewInfo(mTickerView));
            pw.println("  mScrollView: " + viewInfo(mScrollView)
                    + " scroll " + mScrollView.getScrollX() + "," + mScrollView.getScrollY());
        }

        if (DUMPTRUCK) {
            synchronized (mNotificationData) {
                int N = mNotificationData.size();
                pw.println("  notification icons: " + N);
                for (int i=0; i<N; i++) {
                    NotificationData.Entry e = mNotificationData.get(i);
                    pw.println("    [" + i + "] key=" + e.key + " icon=" + e.icon);
                    StatusBarNotification n = e.notification;
                    pw.println("         pkg=" + n.pkg + " id=" + n.id + " priority=" + n.priority);
                    pw.println("         notification=" + n.notification);
                    pw.println("         tickerText=\"" + n.notification.tickerText + "\"");
                }
            }

            int N = mStatusIcons.getChildCount();
            pw.println("  system icons: " + N);
            for (int i=0; i<N; i++) {
                StatusBarIconView ic = (StatusBarIconView) mStatusIcons.getChildAt(i);
                pw.println("    [" + i + "] icon=" + ic);
            }

            pw.println("see the logcat for a dump of the views we have created.");
            // must happen on ui thread
            mHandler.post(new Runnable() {
                    public void run() {
                        mStatusBarView.getLocationOnScreen(mAbsPos);
                        Slog.d(TAG, "mStatusBarView: ----- (" + mAbsPos[0] + "," + mAbsPos[1]
                                + ") " + mStatusBarView.getWidth() + "x"
                                + mStatusBarView.getHeight());
                        mStatusBarView.debug();

                        mExpandedView.getLocationOnScreen(mAbsPos);
                        Slog.d(TAG, "mExpandedView: ----- (" + mAbsPos[0] + "," + mAbsPos[1]
                                + ") " + mExpandedView.getWidth() + "x"
                                + mExpandedView.getHeight());
                        mExpandedView.debug();

                        mTrackingView.getLocationOnScreen(mAbsPos);
                        Slog.d(TAG, "mTrackingView: ----- (" + mAbsPos[0] + "," + mAbsPos[1]
                                + ") " + mTrackingView.getWidth() + "x"
                                + mTrackingView.getHeight());
                        mTrackingView.debug();
                    }
                });
        }
    }

    void onBarViewAttached() {
        WindowManager.LayoutParams lp;
        int pixelFormat;
        Drawable bg;

        /// ---------- Tracking View --------------
        bg = mTrackingView.getBackground();
        if (bg != null) {
            pixelFormat = bg.getOpacity();
        }

        lp = new WindowManager.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT,
                WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL,
                0
                | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
                PixelFormat.OPAQUE);
        if (ActivityManager.isHighEndGfx(mDisplay)) {
            lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
        }
//        lp.token = mStatusBarView.getWindowToken();
        lp.gravity = Gravity.TOP | Gravity.FILL_HORIZONTAL;
        lp.setTitle("TrackingView");
        lp.y = mTrackingPosition;
        mTrackingParams = lp;

        WindowManagerImpl.getDefault().addView(mTrackingView, lp);
    }

    void onTrackingViewAttached() {
        WindowManager.LayoutParams lp;
        int pixelFormat;

        /// ---------- Expanded View --------------
        pixelFormat = PixelFormat.TRANSLUCENT;

        lp = mExpandedDialog.getWindow().getAttributes();
        lp.x = 0;
        mTrackingPosition = lp.y = mDisplayMetrics.heightPixels; // sufficiently large negative
        lp.type = WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL;
        lp.flags = 0
                | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                | WindowManager.LayoutParams.FLAG_DITHER
                | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        if (ActivityManager.isHighEndGfx(mDisplay)) {
            lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
        }
        lp.format = pixelFormat;
        lp.gravity = Gravity.TOP | Gravity.FILL_HORIZONTAL;
        lp.setTitle("StatusBarExpanded");
        mExpandedParams = lp;
        updateExpandedSize();
        mExpandedDialog.getWindow().setFormat(pixelFormat);

        mExpandedDialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        mExpandedDialog.setContentView(mExpandedView,
                new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                                           ViewGroup.LayoutParams.MATCH_PARENT));
        mExpandedDialog.getWindow().setBackgroundDrawable(null);
        mExpandedDialog.show();
    }

    void setNotificationIconVisibility(boolean visible, int anim) {
        int old = mNotificationIcons.getVisibility();
        int v = visible ? View.VISIBLE : View.INVISIBLE;
        if (old != v) {
            mNotificationIcons.setVisibility(v);
            mNotificationIcons.startAnimation(loadAnim(anim, null));
        }
    }

    void updateExpandedInvisiblePosition() {
        if (mTrackingView != null) {
            mTrackingPosition = -mDisplayMetrics.heightPixels;
            if (mTrackingParams != null) {
                mTrackingParams.y = mTrackingPosition;
                WindowManagerImpl.getDefault().updateViewLayout(mTrackingView, mTrackingParams);
            }
        }
        if (mExpandedParams != null) {
            mExpandedParams.y = -mDisplayMetrics.heightPixels;
            mExpandedDialog.getWindow().setAttributes(mExpandedParams);
        }
    }

    void updateExpandedViewPos(int expandedPosition) {
        if (SPEW) {
            Slog.d(TAG, "updateExpandedViewPos before expandedPosition=" + expandedPosition
                    + " mTrackingParams.y=" + ((mTrackingParams == null) ? "?" : mTrackingParams.y)
                    + " mTrackingPosition=" + mTrackingPosition);
        }

        int h = mStatusBarView.getHeight();
        int disph = mDisplayMetrics.heightPixels;

        // If the expanded view is not visible, make sure they're still off screen.
        // Maybe the view was resized.
        if (!mExpandedVisible) {
            updateExpandedInvisiblePosition();
            return;
        }

        // tracking view...
        int pos;
        if (expandedPosition == EXPANDED_FULL_OPEN) {
            pos = h;
        }
        else if (expandedPosition == EXPANDED_LEAVE_ALONE) {
            pos = mTrackingPosition;
        }
        else {
            if (expandedPosition <= disph) {
                pos = expandedPosition;
            } else {
                pos = disph;
            }
            pos -= disph-h;
        }
        mTrackingPosition = mTrackingParams.y = pos;
        mTrackingParams.height = disph-h;
        WindowManagerImpl.getDefault().updateViewLayout(mTrackingView, mTrackingParams);

        if (mExpandedParams != null) {
            if (mCloseView.getWindowVisibility() == View.VISIBLE) {
                mCloseView.getLocationInWindow(mPositionTmp);
                final int closePos = mPositionTmp[1];

                mExpandedContents.getLocationInWindow(mPositionTmp);
                final int contentsBottom = mPositionTmp[1] + mExpandedContents.getHeight();

                mExpandedParams.y = pos + mTrackingView.getHeight()
                        - (mTrackingParams.height-closePos) - contentsBottom;

                if (SPEW) {
                    Slog.d(PhoneStatusBar.TAG,
                            "pos=" + pos +
                            " trackingHeight=" + mTrackingView.getHeight() +
                            " (trackingParams.height - closePos)=" +
                                (mTrackingParams.height - closePos) +
                            " contentsBottom=" + contentsBottom);
                }

            } else {
                // If the tracking view is not yet visible, then we can't have
                // a good value of the close view location.  We need to wait for
                // it to be visible to do a layout.
                mExpandedParams.y = -mDisplayMetrics.heightPixels;
            }
            int max = h;
            if (mExpandedParams.y > max) {
                mExpandedParams.y = max;
            }
            int min = mTrackingPosition;
            if (mExpandedParams.y < min) {
                mExpandedParams.y = min;
            }

            boolean visible = (mTrackingPosition + mTrackingView.getHeight()) > h;
            if (!visible) {
                // if the contents aren't visible, move the expanded view way off screen
                // because the window itself extends below the content view.
                mExpandedParams.y = -disph;
            }
            mExpandedDialog.getWindow().setAttributes(mExpandedParams);

            // As long as this isn't just a repositioning that's not supposed to affect
            // the user's perception of what's showing, call to say that the visibility
            // has changed. (Otherwise, someone else will call to do that).
            if (expandedPosition != EXPANDED_LEAVE_ALONE) {
                if (SPEW) Slog.d(TAG, "updateExpandedViewPos visibilityChanged(" + visible + ")");
                visibilityChanged(visible);
            }
        }

        if (SPEW) {
            Slog.d(TAG, "updateExpandedViewPos after  expandedPosition=" + expandedPosition
                    + " mTrackingParams.y=" + mTrackingParams.y
                    + " mTrackingPosition=" + mTrackingPosition
                    + " mExpandedParams.y=" + mExpandedParams.y
                    + " mExpandedParams.height=" + mExpandedParams.height);
        }
    }

    int getExpandedHeight(int disph) {
        if (DEBUG) {
            Slog.d(TAG, "getExpandedHeight(" + disph + "): sbView="
                    + mStatusBarView.getHeight() + " closeView=" + mCloseView.getHeight());
        }
        return disph - mStatusBarView.getHeight() - mCloseView.getHeight();
    }

    void updateDisplaySize() {
        mDisplay.getMetrics(mDisplayMetrics);
        if (DEBUG) {
            Slog.d(TAG, "updateDisplaySize: " + mDisplayMetrics);
        }
        updateExpandedSize();
    }

    void updateExpandedSize() {
        if (DEBUG) {
            Slog.d(TAG, "updateExpandedSize()");
        }
        if (mExpandedDialog != null && mExpandedParams != null && mDisplayMetrics != null) {
            mExpandedParams.width = mDisplayMetrics.widthPixels;
            mExpandedParams.height = getExpandedHeight(mDisplayMetrics.heightPixels);
            if (!mExpandedVisible) {
                updateExpandedInvisiblePosition();
            } else {
                mExpandedDialog.getWindow().setAttributes(mExpandedParams);
            }
            if (DEBUG) {
                Slog.d(TAG, "updateExpandedSize: height=" + mExpandedParams.height + " " +
                    (mExpandedVisible ? "VISIBLE":"INVISIBLE"));
            }
        }
    }

    // The user is not allowed to get stuck without navigation UI. Upon the slightest user
    // interaction we bring the navigation back.
    public void userActivity() {
        if (mNavigationBarView != null) {
            mNavigationBarView.setHidden(false);
        }
    }

    public void toggleRecentApps() {
        int msg = (mRecentsPanel.getVisibility() == View.GONE)
                ? MSG_OPEN_RECENTS_PANEL : MSG_CLOSE_RECENTS_PANEL;
        mHandler.removeMessages(msg);
        mHandler.sendEmptyMessage(msg);
    }

    /**
     * The LEDs are turned o)ff when the notification panel is shown, even just a little bit.
     * This was added last-minute and is inconsistent with the way the rest of the notifications
     * are handled, because the notification isn't really cancelled.  The lights are just
     * turned off.  If any other notifications happen, the lights will turn back on.  Steve says
     * this is what he wants. (see bug 1131461)
     */
    void visibilityChanged(boolean visible) {
        if (mPanelSlightlyVisible != visible) {
            mPanelSlightlyVisible = visible;
            try {
                mBarService.onPanelRevealed();
            } catch (RemoteException ex) {
                // Won't fail unless the world has ended.
            }
        }
    }

    void performDisableActions(int net) {
        int old = mDisabled;
        int diff = net ^ old;
        mDisabled = net;

        // act accordingly
        if ((diff & StatusBarManager.DISABLE_EXPAND) != 0) {
            if ((net & StatusBarManager.DISABLE_EXPAND) != 0) {
                Slog.d(TAG, "DISABLE_EXPAND: yes");
                animateCollapse();
            }
        }
        if ((diff & StatusBarManager.DISABLE_NOTIFICATION_ICONS) != 0) {
            if ((net & StatusBarManager.DISABLE_NOTIFICATION_ICONS) != 0) {
                Slog.d(TAG, "DISABLE_NOTIFICATION_ICONS: yes");
                if (mTicking) {
                    mNotificationIcons.setVisibility(View.INVISIBLE);
                    mTicker.halt();
                } else {
                    setNotificationIconVisibility(false, com.android.internal.R.anim.fade_out);
                }
            } else {
                Slog.d(TAG, "DISABLE_NOTIFICATION_ICONS: no");
                if (!mExpandedVisible) {
                    setNotificationIconVisibility(true, com.android.internal.R.anim.fade_in);
                }
            }
        } else if ((diff & StatusBarManager.DISABLE_NOTIFICATION_TICKER) != 0) {
            if (mTicking && (net & StatusBarManager.DISABLE_NOTIFICATION_TICKER) != 0) {
                mTicker.halt();
            }
        }
    }

    private View.OnClickListener mClearButtonListener = new View.OnClickListener() {
        public void onClick(View v) {
            try {
                mBarService.onClearAllNotifications();
            } catch (RemoteException ex) {
                // system process is dead if we're here.
            }
            animateCollapse();
        }
    };

    private View.OnClickListener mSettingsButtonListener = new View.OnClickListener() {
        public void onClick(View v) {
            v.getContext().startActivity(new Intent(Settings.ACTION_SETTINGS)
                    .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
            animateCollapse();
        }
    };

    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)
                    || Intent.ACTION_SCREEN_OFF.equals(action)) {
                boolean excludeRecents = false;
                if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) {
                    String reason = intent.getStringExtra("reason");
                    if (reason != null) {
                        excludeRecents = reason.equals("recentapps");
                    }
                }
                animateCollapse(excludeRecents);
            }
            else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
                repositionNavigationBar();
                updateResources();
            }
        }
    };

    private void setIntruderAlertVisibility(boolean vis) {
        mIntruderAlertView.setVisibility(vis ? View.VISIBLE : View.GONE);
    }

    /**
     * Reload some of our resources when the configuration changes.
     *
     * We don't reload everything when the configuration changes -- we probably
     * should, but getting that smooth is tough.  Someday we'll fix that.  In the
     * meantime, just update the things that we know change.
     */
    void updateResources() {
        final Context context = mContext;
        final Resources res = context.getResources();

        if (mClearButton instanceof TextView) {
            ((TextView)mClearButton).setText(context.getText(R.string.status_bar_clear_all_button));
        }
        mNoNotificationsTitle.setText(context.getText(R.string.status_bar_no_notifications_title));

        loadDimens();
    }

    protected void loadDimens() {
        final Resources res = mContext.getResources();

        mNaturalBarHeight = res.getDimensionPixelSize(
                com.android.internal.R.dimen.status_bar_height);

        int newIconSize = res.getDimensionPixelSize(
            com.android.internal.R.dimen.status_bar_icon_size);
        int newIconHPadding = res.getDimensionPixelSize(
            R.dimen.status_bar_icon_padding);

        if (newIconHPadding != mIconHPadding || newIconSize != mIconSize) {
//            Slog.d(TAG, "size=" + newIconSize + " padding=" + newIconHPadding);
            mIconHPadding = newIconHPadding;
            mIconSize = newIconSize;
            //reloadAllNotificationIcons(); // reload the tray
        }

        mEdgeBorder = res.getDimensionPixelSize(R.dimen.status_bar_edge_ignore);

        mSelfExpandVelocityPx = res.getDimension(R.dimen.self_expand_velocity);
        mSelfCollapseVelocityPx = res.getDimension(R.dimen.self_collapse_velocity);
        mFlingExpandMinVelocityPx = res.getDimension(R.dimen.fling_expand_min_velocity);
        mFlingCollapseMinVelocityPx = res.getDimension(R.dimen.fling_collapse_min_velocity);

        mCollapseMinDisplayFraction = res.getFraction(R.dimen.collapse_min_display_fraction, 1, 1);
        mExpandMinDisplayFraction = res.getFraction(R.dimen.expand_min_display_fraction, 1, 1);

        mExpandAccelPx = res.getDimension(R.dimen.expand_accel);
        mCollapseAccelPx = res.getDimension(R.dimen.collapse_accel);

        mFlingGestureMaxXVelocityPx = res.getDimension(R.dimen.fling_gesture_max_x_velocity);

        if (false) Slog.v(TAG, "updateResources");
    }

    //
    // tracing
    //

    void postStartTracing() {
        mHandler.postDelayed(mStartTracing, 3000);
    }

    void vibrate() {
        android.os.Vibrator vib = (android.os.Vibrator)mContext.getSystemService(
                Context.VIBRATOR_SERVICE);
        vib.vibrate(250);
    }

    Runnable mStartTracing = new Runnable() {
        public void run() {
            vibrate();
            SystemClock.sleep(250);
            Slog.d(TAG, "startTracing");
            android.os.Debug.startMethodTracing("/data/statusbar-traces/trace");
            mHandler.postDelayed(mStopTracing, 10000);
        }
    };

    Runnable mStopTracing = new Runnable() {
        public void run() {
            android.os.Debug.stopMethodTracing();
            Slog.d(TAG, "stopTracing");
            vibrate();
        }
    };

    public class TouchOutsideListener implements View.OnTouchListener {
        private int mMsg;
        private RecentsPanelView mPanel;

        public TouchOutsideListener(int msg, RecentsPanelView panel) {
            mMsg = msg;
            mPanel = panel;
        }

        public boolean onTouch(View v, MotionEvent ev) {
            final int action = ev.getAction();
            if (action == MotionEvent.ACTION_OUTSIDE
                || (action == MotionEvent.ACTION_DOWN
                    && !mPanel.isInContentArea((int)ev.getX(), (int)ev.getY()))) {
                mHandler.removeMessages(mMsg);
                mHandler.sendEmptyMessage(mMsg);
                return true;
            }
            return false;
        }
    }
}