android关于弹出式通知的旧方案

/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the “License”);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.android.systemui.statusbar.policy;

import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.graphics.Outline;
import android.graphics.Rect;
import android.os.SystemClock;
import android.provider.Settings;
import android.util.ArrayMap;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewOutlineProvider;
import android.view.ViewTreeObserver;
import android.view.accessibility.AccessibilityEvent;
import android.widget.FrameLayout;

import com.android.systemui.ExpandHelper;
import com.android.systemui.Gefingerpoken;
import com.android.systemui.R;
import com.android.systemui.SwipeHelper;
import com.android.systemui.statusbar.ExpandableView;
import com.android.systemui.statusbar.NotificationData;
import com.android.systemui.statusbar.phone.PhoneStatusBar;

import java.util.ArrayList;

public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback,
ViewTreeObserver.OnComputeInternalInsetsListener {
private static final String TAG = “HeadsUpNotificationView”;
private static final boolean DEBUG = false;
private static final boolean SPEW = DEBUG;
private static final String SETTING_HEADS_UP_SNOOZE_LENGTH_MS = “heads_up_snooze_length_ms”;

Rect mTmpRect = new Rect();
int[] mTmpTwoArray = new int[2];

private final int mTouchSensitivityDelay;
private final float mMaxAlpha = 1f;
private final ArrayMap mSnoozedPackages;
private final int mDefaultSnoozeLengthMs;

private SwipeHelper mSwipeHelper;
private EdgeSwipeHelper mEdgeSwipeHelper;

private PhoneStatusBar mBar;

private long mStartTouchTime;
private ViewGroup mContentHolder;
private int mSnoozeLengthMs;
private ContentObserver mSettingsObserver;

private NotificationData.Entry mHeadsUp;
private int mUser;
private String mMostRecentPackageName;

public HeadsUpNotificationView(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
}

public HeadsUpNotificationView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    Resources resources = context.getResources();
    mTouchSensitivityDelay = resources.getInteger(R.integer.touch_acceptance_delay);//M zyl 2016.10.08
    if (DEBUG) Log.v(TAG, "create() " + mTouchSensitivityDelay);
    mSnoozedPackages = new ArrayMap<>();
    mDefaultSnoozeLengthMs = resources.getInteger(R.integer.heads_up_default_snooze_length_ms);
    mSnoozeLengthMs = mDefaultSnoozeLengthMs;
}

public void updateResources() {
    if (mContentHolder != null) {
        final LayoutParams lp = (LayoutParams) mContentHolder.getLayoutParams();
        lp.width = getResources().getDimensionPixelSize(R.dimen.notification_panel_width);
        lp.gravity = getResources().getInteger(R.integer.notification_panel_layout_gravity);
        mContentHolder.setLayoutParams(lp);
    }
}

public void setBar(PhoneStatusBar bar) {
    mBar = bar;
}

public ViewGroup getHolder() {
    return mContentHolder;
}

public boolean showNotification(NotificationData.Entry headsUp) {
    if (mHeadsUp != null && headsUp != null && !mHeadsUp.key.equals(headsUp.key)) {
        // bump any previous heads up back to the shade
        release();
    }

    mHeadsUp = headsUp;
    if (mContentHolder != null) {
        mContentHolder.removeAllViews();
    }

    if (mHeadsUp != null) {
        mMostRecentPackageName = mHeadsUp.notification.getPackageName();
        mHeadsUp.row.setSystemExpanded(true);
        mHeadsUp.row.setSensitive(false);
        mHeadsUp.row.setHeadsUp(true);
        mHeadsUp.row.setHideSensitive(
                false, false /* animated */, 0 /* delay */, 0 /* duration */);
        if (mContentHolder == null) {
            // too soon!
            return false;
        }
        mContentHolder.setX(0);
        mContentHolder.setVisibility(View.VISIBLE);
        mContentHolder.setAlpha(mMaxAlpha);
        mContentHolder.addView(mHeadsUp.row);
        sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);

        mSwipeHelper.snapChild(mContentHolder, 1f);
        mStartTouchTime = SystemClock.elapsedRealtime() + mTouchSensitivityDelay;

        mHeadsUp.setInterruption();

        // 2. Animate mHeadsUpNotificationView in
        mBar.scheduleHeadsUpOpen();

        // 3. Set alarm to age the notification off
        mBar.resetHeadsUpDecayTimer();
    }
    return true;
}

@Override
protected void onVisibilityChanged(View changedView, int visibility) {
    super.onVisibilityChanged(changedView, visibility);
    if (changedView.getVisibility() == VISIBLE) {
        sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
    }
}

public boolean isShowing(String key) {
    return mHeadsUp != null && mHeadsUp.key.equals(key);
}

/** Discard the Heads Up notification. */
public void clear() {
    Log.i("zyl log 10134","HeadsUpNotificationView------->clear()");
    mHeadsUp = null;
    mBar.scheduleHeadsUpClose();
}

/** Respond to dismissal of the Heads Up window. */
public void dismiss() {
    if (mHeadsUp == null) return;
    if (mHeadsUp.notification.isClearable()) {
        mBar.onNotificationClear(mHeadsUp.notification);
    } else {
        release();
    }
    mHeadsUp = null;
    Log.i("zyl log 10134","HeadsUpNotificationView------->dismiss()");
    mBar.scheduleHeadsUpClose();
}

/** Push any current Heads Up notification down into the shade. */
public void release() {
    if (mHeadsUp != null) {
        mBar.displayNotificationFromHeadsUp(mHeadsUp.notification);
    }
    mHeadsUp = null;
}

public boolean isSnoozed(String packageName) {
    final String key = snoozeKey(packageName, mUser);
    Long snoozedUntil = mSnoozedPackages.get(key);
    if (snoozedUntil != null) {
        if (snoozedUntil > SystemClock.elapsedRealtime()) {
            if (DEBUG) Log.v(TAG, key + " snoozed");
            return true;
        }
        mSnoozedPackages.remove(packageName);
    }
    return false;
}

private void snooze() {
    if (mMostRecentPackageName != null) {
        mSnoozedPackages.put(snoozeKey(mMostRecentPackageName, mUser),
                SystemClock.elapsedRealtime() + mSnoozeLengthMs);
    }
    releaseAndClose();
}

private static String snoozeKey(String packageName, int user) {
    return user + "," + packageName;
}

public void releaseAndClose() {
    release();
    Log.i("zyl log 10134","HeadsUpNotificationView------->releaseAndClose()");
    mBar.scheduleHeadsUpClose();
}

public NotificationData.Entry getEntry() {
    return mHeadsUp;
}

public boolean isClearable() {
    return mHeadsUp == null || mHeadsUp.notification.isClearable();
}

// ViewGroup methods

private static final ViewOutlineProvider CONTENT_HOLDER_OUTLINE_PROVIDER =
        new ViewOutlineProvider() {
    @Override
    public void getOutline(View view, Outline outline) {
        int outlineLeft = view.getPaddingLeft();
        int outlineTop = view.getPaddingTop();

        // Apply padding to shadow.
        outline.setRect(outlineLeft, outlineTop,
                view.getWidth() - outlineLeft - view.getPaddingRight(),
                view.getHeight() - outlineTop - view.getPaddingBottom());
    }
};

@Override
public void onAttachedToWindow() {
    final ViewConfiguration viewConfiguration = ViewConfiguration.get(getContext());
    float touchSlop = viewConfiguration.getScaledTouchSlop();
    mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, getContext());
    mSwipeHelper.setMaxSwipeProgress(mMaxAlpha);
    mEdgeSwipeHelper = new EdgeSwipeHelper(touchSlop);

    int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_min_height);
    int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_max_height);

    mContentHolder = (ViewGroup) findViewById(R.id.content_holder);
    mContentHolder.setOutlineProvider(CONTENT_HOLDER_OUTLINE_PROVIDER);

    mSnoozeLengthMs = Settings.Global.getInt(mContext.getContentResolver(),
            SETTING_HEADS_UP_SNOOZE_LENGTH_MS, mDefaultSnoozeLengthMs);
    mSettingsObserver = new ContentObserver(getHandler()) {
        @Override
        public void onChange(boolean selfChange) {
            final int packageSnoozeLengthMs = Settings.Global.getInt(
                    mContext.getContentResolver(), SETTING_HEADS_UP_SNOOZE_LENGTH_MS, -1);
            if (packageSnoozeLengthMs > -1 && packageSnoozeLengthMs != mSnoozeLengthMs) {
                mSnoozeLengthMs = packageSnoozeLengthMs;
                if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);
            }
        }
    };
    mContext.getContentResolver().registerContentObserver(
            Settings.Global.getUriFor(SETTING_HEADS_UP_SNOOZE_LENGTH_MS), false,
            mSettingsObserver);
    if (DEBUG) Log.v(TAG, "mSnoozeLengthMs = " + mSnoozeLengthMs);

    if (mHeadsUp != null) {
        // whoops, we're on already!
        showNotification(mHeadsUp);
    }

    getViewTreeObserver().addOnComputeInternalInsetsListener(this);
}

@Override
protected void onDetachedFromWindow() {
    mContext.getContentResolver().unregisterContentObserver(mSettingsObserver);
}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    Log.v(TAG, "========HeadsUpNotificationView onInterceptTouchEvent()========");
    if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
    if (SystemClock.elapsedRealtime() < mStartTouchTime) {
        Log.v(TAG, "onInterceptTouchEvent() SystemClock.elapsedRealtime < mStartTouchTime"
            + " SystemClock.elapsedRealtime=" + SystemClock.elapsedRealtime()
            + " mStartTouchTime=" + mStartTouchTime);
        return true;
    }
    return mEdgeSwipeHelper.onInterceptTouchEvent(ev)
            || mSwipeHelper.onInterceptTouchEvent(ev)
            || super.onInterceptTouchEvent(ev);
}

// View methods

@Override
public void onDraw(android.graphics.Canvas c) {
    super.onDraw(c);
    if (DEBUG) {
        //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
        //        + getMeasuredHeight() + "px");
        c.save();
        c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
                android.graphics.Region.Op.DIFFERENCE);
        c.drawColor(0xFFcc00cc);
        c.restore();
    }
}

@Override
public boolean onTouchEvent(MotionEvent ev) {
    Log.v(TAG, "========HeadsUpNotificationView onTouchEvent()========");
    if (SystemClock.elapsedRealtime() < mStartTouchTime) {
        return false;
    }
    mBar.resetHeadsUpDecayTimer();
    return mEdgeSwipeHelper.onTouchEvent(ev)
            || mSwipeHelper.onTouchEvent(ev)
            || super.onTouchEvent(ev);
}

@Override
protected void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    float densityScale = getResources().getDisplayMetrics().density;
    mSwipeHelper.setDensityScale(densityScale);
    float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
    mSwipeHelper.setPagingTouchSlop(pagingTouchSlop);
}

// ExpandHelper.Callback methods

@Override
public ExpandableView getChildAtRawPosition(float x, float y) {
    return getChildAtPosition(x, y);
}

@Override
public ExpandableView getChildAtPosition(float x, float y) {
    return mHeadsUp == null ? null : mHeadsUp.row;
}

@Override
public boolean canChildBeExpanded(View v) {
    return mHeadsUp != null && mHeadsUp.row == v && mHeadsUp.row.isExpandable();
}

@Override
public void setUserExpandedChild(View v, boolean userExpanded) {
    if (mHeadsUp != null && mHeadsUp.row == v) {
        mHeadsUp.row.setUserExpanded(userExpanded);
    }
}

@Override
public void setUserLockedChild(View v, boolean userLocked) {
    if (mHeadsUp != null && mHeadsUp.row == v) {
        mHeadsUp.row.setUserLocked(userLocked);
    }
}

@Override
public void expansionStateChanged(boolean isExpanding) {

}

// SwipeHelper.Callback methods

@Override
public boolean canChildBeDismissed(View v) {
    return true;
}

@Override
public boolean isAntiFalsingNeeded() {
    return false;
}

@Override
public float getFalsingThresholdFactor() {
    return 1.0f;
}

@Override
public void onChildDismissed(View v) {
    Log.v(TAG, "User swiped heads up to dismiss");
    mBar.onHeadsUpDismissed();
}

@Override
public void onBeginDrag(View v) {
}

@Override
public void onDragCancelled(View v) {
    mContentHolder.setAlpha(mMaxAlpha); // sometimes this isn't quite reset
}

@Override
public void onChildSnappedBack(View animView) {
}

@Override
public boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress) {
    getBackground().setAlpha((int) (255 * swipeProgress));
    return false;
}

@Override
public View getChildAtPosition(MotionEvent ev) {
    return mContentHolder;
}

@Override
public View getChildContentView(View v) {
    return mContentHolder;
}

@Override
public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info) {
    mContentHolder.getLocationOnScreen(mTmpTwoArray);

    info.setTouchableInsets(ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION);
    info.touchableRegion.set(mTmpTwoArray[0], mTmpTwoArray[1],
            mTmpTwoArray[0] + mContentHolder.getWidth(),
            mTmpTwoArray[1] + mContentHolder.getHeight());
}

public void escalate() {
    mBar.scheduleHeadsUpEscalation();
}

public String getKey() {
    return mHeadsUp == null ? null : mHeadsUp.notification.getKey();
}

public void setUser(int user) {
    mUser = user;
}
//add by zyl 2016.10.14
@Override
public void expansionHeightChanged() {

}
private class EdgeSwipeHelper implements Gefingerpoken {
    private static final boolean DEBUG_EDGE_SWIPE = false;
    private final float mTouchSlop;
    private boolean mConsuming;
    private float mFirstY;
    private float mFirstX;

    public EdgeSwipeHelper(float touchSlop) {
        mTouchSlop = touchSlop;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
            Log.i("zyl log 1013","EdgeSwipeHelper.onInterceptTouchEvent");
            Log.i("zyl log 1013","ev.getActionMasked() = " + ev.getActionMasked());
            Log.i("zyl log 1013","MotionEvent.ACTION_DOWN = " + MotionEvent.ACTION_DOWN);
            Log.i("zyl log 1013","MotionEvent.ACTION_MOVE = " + MotionEvent.ACTION_MOVE);
            Log.i("zyl log 1013","MotionEvent.ACTION_UP = " + MotionEvent.ACTION_UP);
            Log.i("zyl log 1013","MotionEvent.ACTION_CANCEL = " + MotionEvent.ACTION_CANCEL);
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action down " + ev.getY());
                mFirstX = ev.getX();
                mFirstY = ev.getY();
                mConsuming = false;
                break;

            case MotionEvent.ACTION_MOVE:
                if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action move " + ev.getY());
                final float dY = ev.getY() - mFirstY;
                final float daX = Math.abs(ev.getX() - mFirstX);
                final float daY = Math.abs(dY);
                if (!mConsuming && daX < daY && daY > mTouchSlop) {
                    snooze();
                    if (dY > 0) {
                        if (DEBUG_EDGE_SWIPE) Log.d(TAG, "found an open");
                        mBar.animateExpandNotificationsPanel();
                    }
                    mConsuming = true;
                }
                break;

            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_CANCEL:
                if (DEBUG_EDGE_SWIPE) Log.d(TAG, "action done" );
                mConsuming = false;
                //add by zyl 2016.10.10
                Log.i("zyl log 1013","HeadsUpNotificationView--------------->EdgeSwipeHelper.MotionEvent.ACTION_CANCEL");
                //onChildDismissed();
                break;
        }
        if (mConsuming) {
            Log.d(TAG, "EdgeSwipeHelper onInterceptTouchEvent action=" + ev.getActionMasked());
        }
        return mConsuming;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        Log.i("zyl log 10132","HeadsUpNotificationVIew------------------------>onTouchEvent.mConsuming = " + mConsuming);
        return mConsuming;
    }
}

}