Initial checkin of AOSP Messaging app.
b/23110861 Change-Id: I11db999bd10656801e618f78ab2b2ef74136fff1
This commit is contained in:
Mike Dodd
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.messaging.ui;
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import android.content.Context;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.os.Handler;
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import android.text.TextUtils;
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import android.util.DisplayMetrics;
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import android.view.Gravity;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.View.MeasureSpec;
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import android.view.View.OnTouchListener;
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import android.view.ViewGroup;
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import android.view.ViewGroup.LayoutParams;
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import android.view.ViewPropertyAnimator;
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import android.view.ViewTreeObserver.OnGlobalLayoutListener;
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import android.view.WindowManager;
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import android.widget.PopupWindow;
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import android.widget.PopupWindow.OnDismissListener;
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import com.android.messaging.Factory;
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import com.android.messaging.R;
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import com.android.messaging.ui.SnackBar.Placement;
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import com.android.messaging.ui.SnackBar.SnackBarListener;
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import com.android.messaging.util.AccessibilityUtil;
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import com.android.messaging.util.Assert;
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import com.android.messaging.util.LogUtil;
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import com.android.messaging.util.OsUtil;
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import com.android.messaging.util.TextUtil;
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import com.android.messaging.util.UiUtils;
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import com.google.common.base.Joiner;
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import java.util.List;
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public class SnackBarManager {
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private static SnackBarManager sInstance;
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public static SnackBarManager get() {
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if (sInstance == null) {
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synchronized (SnackBarManager.class) {
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if (sInstance == null) {
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sInstance = new SnackBarManager();
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}
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}
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}
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return sInstance;
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}
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private final Runnable mDismissRunnable = new Runnable() {
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@Override
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public void run() {
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dismiss();
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}
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};
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private final OnTouchListener mDismissOnTouchListener = new OnTouchListener() {
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@Override
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public boolean onTouch(final View view, final MotionEvent event) {
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// Dismiss the {@link SnackBar} but don't consume the event.
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dismiss();
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return false;
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}
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};
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private final SnackBarListener mDismissOnUserTapListener = new SnackBarListener() {
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@Override
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public void onActionClick() {
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dismiss();
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}
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};
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private final int mTranslationDurationMs;
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private final Handler mHideHandler;
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private SnackBar mCurrentSnackBar;
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private SnackBar mLatestSnackBar;
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private SnackBar mNextSnackBar;
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private boolean mIsCurrentlyDismissing;
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private PopupWindow mPopupWindow;
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private SnackBarManager() {
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mTranslationDurationMs = Factory.get().getApplicationContext().getResources().getInteger(
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R.integer.snackbar_translation_duration_ms);
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mHideHandler = new Handler();
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}
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public SnackBar getLatestSnackBar() {
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return mLatestSnackBar;
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}
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public SnackBar.Builder newBuilder(final View parentView) {
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return new SnackBar.Builder(this, parentView);
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}
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/**
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* The given snackBar is not guaranteed to be shown. If the previous snackBar is animating away,
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* and another snackBar is requested to show after this one, this snackBar will be skipped.
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*/
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public void show(final SnackBar snackBar) {
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Assert.notNull(snackBar);
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if (mCurrentSnackBar != null) {
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LogUtil.d(LogUtil.BUGLE_TAG, "Showing snack bar, but currentSnackBar was not null.");
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// Dismiss the current snack bar. That will cause the next snack bar to be shown on
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// completion.
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mNextSnackBar = snackBar;
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mLatestSnackBar = snackBar;
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dismiss();
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return;
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}
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mCurrentSnackBar = snackBar;
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mLatestSnackBar = snackBar;
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// We want to know when either button was tapped so we can dismiss.
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snackBar.setListener(mDismissOnUserTapListener);
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// Cancel previous dismisses & set dismiss for the delay time.
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mHideHandler.removeCallbacks(mDismissRunnable);
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mHideHandler.postDelayed(mDismissRunnable, snackBar.getDuration());
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snackBar.setEnabled(false);
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// For some reason, the addView function does not respect layoutParams.
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// We need to explicitly set it first here.
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final View rootView = snackBar.getRootView();
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if (LogUtil.isLoggable(LogUtil.BUGLE_TAG, LogUtil.DEBUG)) {
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LogUtil.d(LogUtil.BUGLE_TAG, "Showing snack bar: " + snackBar);
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}
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// Measure the snack bar root view so we know how much to translate by.
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measureSnackBar(snackBar);
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mPopupWindow = new PopupWindow(snackBar.getContext());
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mPopupWindow.setWidth(LayoutParams.MATCH_PARENT);
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mPopupWindow.setHeight(LayoutParams.WRAP_CONTENT);
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mPopupWindow.setBackgroundDrawable(null);
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mPopupWindow.setContentView(rootView);
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final Placement placement = snackBar.getPlacement();
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if (placement == null) {
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mPopupWindow.showAtLocation(
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snackBar.getParentView(), Gravity.BOTTOM | Gravity.START,
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0, getScreenBottomOffset(snackBar));
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} else {
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final View anchorView = placement.getAnchorView();
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// You'd expect PopupWindow.showAsDropDown to ensure the popup moves with the anchor
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// view, which it does for scrolling, but not layout changes, so we have to manually
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// update while the snackbar is showing
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final OnGlobalLayoutListener listener = new OnGlobalLayoutListener() {
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@Override
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public void onGlobalLayout() {
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mPopupWindow.update(anchorView, 0, getRelativeOffset(snackBar),
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anchorView.getWidth(), LayoutParams.WRAP_CONTENT);
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}
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};
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anchorView.getViewTreeObserver().addOnGlobalLayoutListener(listener);
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mPopupWindow.setOnDismissListener(new OnDismissListener() {
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@Override
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public void onDismiss() {
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anchorView.getViewTreeObserver().removeOnGlobalLayoutListener(listener);
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}
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});
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mPopupWindow.showAsDropDown(anchorView, 0, getRelativeOffset(snackBar));
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}
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// Animate the toast bar into view.
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placeSnackBarOffScreen(snackBar);
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animateSnackBarOnScreen(snackBar).withEndAction(new Runnable() {
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@Override
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public void run() {
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mCurrentSnackBar.setEnabled(true);
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makeCurrentSnackBarDismissibleOnTouch();
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// Fire an accessibility event as needed
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String snackBarText = snackBar.getMessageText();
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if (!TextUtils.isEmpty(snackBarText) &&
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TextUtils.getTrimmedLength(snackBarText) > 0) {
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snackBarText = snackBarText.trim();
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final String snackBarActionText = snackBar.getActionLabel();
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if (!TextUtil.isAllWhitespace(snackBarActionText)) {
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snackBarText = Joiner.on(", ").join(snackBarText, snackBarActionText);
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}
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AccessibilityUtil.announceForAccessibilityCompat(snackBar.getSnackBarView(),
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null /*accessibilityManager*/, snackBarText);
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}
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}
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});
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// Animate any interaction views out of the way.
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animateInteractionsOnShow(snackBar);
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}
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/**
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* Dismisses the current toast that is showing. If there is a toast waiting to be shown, that
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* toast will be shown when the current one has been dismissed.
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*/
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public void dismiss() {
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mHideHandler.removeCallbacks(mDismissRunnable);
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if (mCurrentSnackBar == null || mIsCurrentlyDismissing) {
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return;
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}
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final SnackBar snackBar = mCurrentSnackBar;
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LogUtil.d(LogUtil.BUGLE_TAG, "Dismissing snack bar.");
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mIsCurrentlyDismissing = true;
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snackBar.setEnabled(false);
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// Animate the toast bar down.
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final View rootView = snackBar.getRootView();
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animateSnackBarOffScreen(snackBar).withEndAction(new Runnable() {
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@Override
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public void run() {
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rootView.setVisibility(View.GONE);
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try {
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mPopupWindow.dismiss();
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} catch (IllegalArgumentException e) {
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// PopupWindow.dismiss() will fire an IllegalArgumentException if the activity
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// has already ended while we were animating
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}
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mCurrentSnackBar = null;
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mIsCurrentlyDismissing = false;
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// Show the next toast if one is waiting.
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if (mNextSnackBar != null) {
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final SnackBar localNextSnackBar = mNextSnackBar;
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mNextSnackBar = null;
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show(localNextSnackBar);
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}
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}
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});
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// Animate any interaction views back.
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animateInteractionsOnDismiss(snackBar);
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}
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private void makeCurrentSnackBarDismissibleOnTouch() {
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// Set touching on the entire view, the {@link SnackBar} itself, as
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// well as the button's dismiss the toast.
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mCurrentSnackBar.getRootView().setOnTouchListener(mDismissOnTouchListener);
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mCurrentSnackBar.getSnackBarView().setOnTouchListener(mDismissOnTouchListener);
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}
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private void measureSnackBar(final SnackBar snackBar) {
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final View rootView = snackBar.getRootView();
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final Point displaySize = new Point();
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getWindowManager(snackBar.getContext()).getDefaultDisplay().getSize(displaySize);
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final int widthSpec = ViewGroup.getChildMeasureSpec(
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MeasureSpec.makeMeasureSpec(displaySize.x, MeasureSpec.EXACTLY),
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0, LayoutParams.MATCH_PARENT);
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final int heightSpec = ViewGroup.getChildMeasureSpec(
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MeasureSpec.makeMeasureSpec(displaySize.y, MeasureSpec.EXACTLY),
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0, LayoutParams.WRAP_CONTENT);
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rootView.measure(widthSpec, heightSpec);
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}
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private void placeSnackBarOffScreen(final SnackBar snackBar) {
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final View rootView = snackBar.getRootView();
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final View snackBarView = snackBar.getSnackBarView();
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snackBarView.setTranslationY(rootView.getMeasuredHeight());
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}
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private ViewPropertyAnimator animateSnackBarOnScreen(final SnackBar snackBar) {
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final View snackBarView = snackBar.getSnackBarView();
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return normalizeAnimator(snackBarView.animate()).translationX(0).translationY(0);
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}
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private ViewPropertyAnimator animateSnackBarOffScreen(final SnackBar snackBar) {
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final View rootView = snackBar.getRootView();
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final View snackBarView = snackBar.getSnackBarView();
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return normalizeAnimator(snackBarView.animate()).translationY(rootView.getHeight());
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}
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private void animateInteractionsOnShow(final SnackBar snackBar) {
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final List<SnackBarInteraction> interactions = snackBar.getInteractions();
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for (final SnackBarInteraction interaction : interactions) {
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if (interaction != null) {
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final ViewPropertyAnimator animator = interaction.animateOnSnackBarShow(snackBar);
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if (animator != null) {
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normalizeAnimator(animator);
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}
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}
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}
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}
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private void animateInteractionsOnDismiss(final SnackBar snackBar) {
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final List<SnackBarInteraction> interactions = snackBar.getInteractions();
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for (final SnackBarInteraction interaction : interactions) {
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if (interaction != null) {
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final ViewPropertyAnimator animator =
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interaction.animateOnSnackBarDismiss(snackBar);
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if (animator != null) {
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normalizeAnimator(animator);
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}
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}
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}
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}
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private ViewPropertyAnimator normalizeAnimator(final ViewPropertyAnimator animator) {
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return animator
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.setInterpolator(UiUtils.DEFAULT_INTERPOLATOR)
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.setDuration(mTranslationDurationMs);
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}
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private WindowManager getWindowManager(final Context context) {
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return (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
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}
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/**
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* Get the offset from the bottom of the screen where the snack bar should be placed.
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*/
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private int getScreenBottomOffset(final SnackBar snackBar) {
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final WindowManager windowManager = getWindowManager(snackBar.getContext());
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final DisplayMetrics displayMetrics = new DisplayMetrics();
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if (OsUtil.isAtLeastL()) {
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windowManager.getDefaultDisplay().getRealMetrics(displayMetrics);
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} else {
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windowManager.getDefaultDisplay().getMetrics(displayMetrics);
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}
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final int screenHeight = displayMetrics.heightPixels;
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if (OsUtil.isAtLeastL()) {
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// In L, the navigation bar is included in the space for the popup window, so we have to
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// offset by the size of the navigation bar
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final Rect displayRect = new Rect();
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snackBar.getParentView().getRootView().getWindowVisibleDisplayFrame(displayRect);
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return screenHeight - displayRect.bottom;
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}
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return 0;
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}
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private int getRelativeOffset(final SnackBar snackBar) {
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final Placement placement = snackBar.getPlacement();
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Assert.notNull(placement);
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final View anchorView = placement.getAnchorView();
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if (placement.getAnchorAbove()) {
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return -snackBar.getRootView().getMeasuredHeight() - anchorView.getHeight();
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} else {
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// Use the default dropdown positioning
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return 0;
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}
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}
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}
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Reference in New Issue
Block a user