/*
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* Copyright (C) 2018 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.launcher3.views;
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import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_CONTROLS;
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import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_TEXT;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Rect;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.Gravity;
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import android.view.MotionEvent;
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import android.widget.TextView;
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import com.android.launcher3.AbstractFloatingView;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.R;
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import com.android.launcher3.anim.Interpolators;
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import com.android.launcher3.compat.AccessibilityManagerCompat;
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import com.android.launcher3.dragndrop.DragLayer;
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/**
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* A toast-like UI at the bottom of the screen with a label, button action, and dismiss action.
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*/
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public class Snackbar extends AbstractFloatingView {
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private static final long SHOW_DURATION_MS = 180;
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private static final long HIDE_DURATION_MS = 180;
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private static final int TIMEOUT_DURATION_MS = 4000;
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private final Launcher mLauncher;
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private Runnable mOnDismissed;
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public Snackbar(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public Snackbar(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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mLauncher = Launcher.getLauncher(context);
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inflate(context, R.layout.snackbar, this);
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}
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public static void show(Launcher launcher, int labelStringResId, int actionStringResId,
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Runnable onDismissed, Runnable onActionClicked) {
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closeOpenViews(launcher, true, TYPE_SNACKBAR);
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Snackbar snackbar = new Snackbar(launcher, null);
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// Set some properties here since inflated xml only contains the children.
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snackbar.setOrientation(HORIZONTAL);
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snackbar.setGravity(Gravity.CENTER_VERTICAL);
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Resources res = launcher.getResources();
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snackbar.setElevation(res.getDimension(R.dimen.snackbar_elevation));
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int padding = res.getDimensionPixelSize(R.dimen.snackbar_padding);
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snackbar.setPadding(padding, padding, padding, padding);
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snackbar.setBackgroundResource(R.drawable.round_rect_primary);
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snackbar.mIsOpen = true;
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DragLayer dragLayer = launcher.getDragLayer();
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dragLayer.addView(snackbar);
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DragLayer.LayoutParams params = (DragLayer.LayoutParams) snackbar.getLayoutParams();
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params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
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params.height = res.getDimensionPixelSize(R.dimen.snackbar_height);
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int maxMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_max_margin_left_right);
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int minMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_min_margin_left_right);
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int marginBottom = res.getDimensionPixelSize(R.dimen.snackbar_margin_bottom);
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Rect insets = launcher.getDeviceProfile().getInsets();
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int maxWidth = dragLayer.getWidth() - minMarginLeftRight * 2 - insets.left - insets.right;
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int minWidth = dragLayer.getWidth() - maxMarginLeftRight * 2 - insets.left - insets.right;
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params.width = minWidth;
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params.setMargins(0, 0, 0, marginBottom + insets.bottom);
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TextView labelView = snackbar.findViewById(R.id.label);
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TextView actionView = snackbar.findViewById(R.id.action);
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String labelText = res.getString(labelStringResId);
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String actionText = res.getString(actionStringResId);
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int totalContentWidth = (int) (labelView.getPaint().measureText(labelText)
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+ actionView.getPaint().measureText(actionText))
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+ labelView.getPaddingRight() + labelView.getPaddingLeft()
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+ actionView.getPaddingRight() + actionView.getPaddingLeft()
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+ padding * 2;
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if (totalContentWidth > params.width) {
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// The text doesn't fit in our standard width so update width to accommodate.
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if (totalContentWidth <= maxWidth) {
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params.width = totalContentWidth;
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} else {
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// One line will be cut off, fallback to 2 lines and smaller font. (This should only
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// happen in some languages if system display and font size are set to largest.)
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int textHeight = res.getDimensionPixelSize(R.dimen.snackbar_content_height);
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float textSizePx = res.getDimension(R.dimen.snackbar_min_text_size);
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labelView.setLines(2);
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labelView.getLayoutParams().height = textHeight * 2;
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actionView.getLayoutParams().height = textHeight * 2;
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labelView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
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actionView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
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params.height += textHeight;
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params.width = maxWidth;
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}
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}
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labelView.setText(labelText);
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actionView.setText(actionText);
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actionView.setOnClickListener(v -> {
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if (onActionClicked != null) {
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onActionClicked.run();
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}
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snackbar.mOnDismissed = null;
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snackbar.close(true);
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});
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snackbar.mOnDismissed = onDismissed;
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snackbar.setAlpha(0);
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snackbar.setScaleX(0.8f);
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snackbar.setScaleY(0.8f);
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snackbar.animate()
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.alpha(1f)
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.withLayer()
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.scaleX(1)
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.scaleY(1)
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.setDuration(SHOW_DURATION_MS)
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.setInterpolator(Interpolators.ACCEL_DEACCEL)
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.start();
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int timeout = AccessibilityManagerCompat.getRecommendedTimeoutMillis(launcher,
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TIMEOUT_DURATION_MS, FLAG_CONTENT_TEXT | FLAG_CONTENT_CONTROLS);
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snackbar.postDelayed(() -> snackbar.close(true), timeout);
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}
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@Override
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protected void handleClose(boolean animate) {
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if (mIsOpen) {
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if (animate) {
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animate().alpha(0f)
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.withLayer()
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.setStartDelay(0)
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.setDuration(HIDE_DURATION_MS)
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.setInterpolator(Interpolators.ACCEL)
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.withEndAction(this::onClosed)
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.start();
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} else {
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animate().cancel();
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onClosed();
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}
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mIsOpen = false;
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}
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}
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private void onClosed() {
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mLauncher.getDragLayer().removeView(this);
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if (mOnDismissed != null) {
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mOnDismissed.run();
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}
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}
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@Override
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public void logActionCommand(int command) {
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// TODO
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}
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@Override
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protected boolean isOfType(int type) {
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return (type & TYPE_SNACKBAR) != 0;
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}
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@Override
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public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
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if (ev.getAction() == MotionEvent.ACTION_DOWN) {
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DragLayer dl = mLauncher.getDragLayer();
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if (!dl.isEventOverView(this, ev)) {
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close(true);
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}
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}
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return false;
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}
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}
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