303 lines
9.8 KiB
Java
303 lines
9.8 KiB
Java
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/*
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* Copyright (C) 2022 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 android.inputmethodservice.navigationbar;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.ValueAnimator;
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import android.view.View;
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import android.view.View.AccessibilityDelegate;
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import android.view.animation.Interpolator;
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import android.view.animation.LinearInterpolator;
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import java.util.ArrayList;
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/**
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* Dispatches common view calls to multiple views. This is used to handle
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* multiples of the same nav bar icon appearing.
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*/
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final class ButtonDispatcher {
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private static final int FADE_DURATION_IN = 150;
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private static final int FADE_DURATION_OUT = 250;
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public static final Interpolator LINEAR = new LinearInterpolator();
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private final ArrayList<View> mViews = new ArrayList<>();
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private final int mId;
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private View.OnClickListener mClickListener;
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private View.OnTouchListener mTouchListener;
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private View.OnLongClickListener mLongClickListener;
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private View.OnHoverListener mOnHoverListener;
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private Boolean mLongClickable;
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private float mAlpha = 1.0f;
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private Float mDarkIntensity;
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private int mVisibility = View.VISIBLE;
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private Boolean mDelayTouchFeedback;
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private KeyButtonDrawable mImageDrawable;
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private View mCurrentView;
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private ValueAnimator mFadeAnimator;
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private AccessibilityDelegate mAccessibilityDelegate;
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private final ValueAnimator.AnimatorUpdateListener mAlphaListener = animation ->
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setAlpha(
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(float) animation.getAnimatedValue(),
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false /* animate */,
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false /* cancelAnimator */);
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private final AnimatorListenerAdapter mFadeListener = new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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mFadeAnimator = null;
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setVisibility(getAlpha() == 1 ? View.VISIBLE : View.INVISIBLE);
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}
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};
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ButtonDispatcher(int id) {
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mId = id;
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}
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public void clear() {
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mViews.clear();
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}
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public void addView(View view) {
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mViews.add(view);
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view.setOnClickListener(mClickListener);
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view.setOnTouchListener(mTouchListener);
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view.setOnLongClickListener(mLongClickListener);
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view.setOnHoverListener(mOnHoverListener);
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if (mLongClickable != null) {
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view.setLongClickable(mLongClickable);
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}
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view.setAlpha(mAlpha);
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view.setVisibility(mVisibility);
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if (mAccessibilityDelegate != null) {
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view.setAccessibilityDelegate(mAccessibilityDelegate);
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}
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if (view instanceof ButtonInterface) {
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final ButtonInterface button = (ButtonInterface) view;
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if (mDarkIntensity != null) {
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button.setDarkIntensity(mDarkIntensity);
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}
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if (mImageDrawable != null) {
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button.setImageDrawable(mImageDrawable);
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}
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if (mDelayTouchFeedback != null) {
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button.setDelayTouchFeedback(mDelayTouchFeedback);
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}
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}
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}
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public int getId() {
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return mId;
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}
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public int getVisibility() {
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return mVisibility;
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}
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public boolean isVisible() {
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return getVisibility() == View.VISIBLE;
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}
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public float getAlpha() {
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return mAlpha;
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}
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public KeyButtonDrawable getImageDrawable() {
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return mImageDrawable;
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}
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public void setImageDrawable(KeyButtonDrawable drawable) {
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mImageDrawable = drawable;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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if (mViews.get(i) instanceof ButtonInterface) {
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((ButtonInterface) mViews.get(i)).setImageDrawable(mImageDrawable);
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}
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}
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if (mImageDrawable != null) {
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mImageDrawable.setCallback(mCurrentView);
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}
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}
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public void setVisibility(int visibility) {
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if (mVisibility == visibility) return;
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if (mFadeAnimator != null) {
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mFadeAnimator.cancel();
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}
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mVisibility = visibility;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setVisibility(mVisibility);
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}
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}
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public void setAlpha(float alpha) {
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setAlpha(alpha, false /* animate */);
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}
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public void setAlpha(float alpha, boolean animate) {
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setAlpha(alpha, animate, true /* cancelAnimator */);
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}
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public void setAlpha(float alpha, boolean animate, long duration) {
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setAlpha(alpha, animate, duration, true /* cancelAnimator */);
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}
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public void setAlpha(float alpha, boolean animate, boolean cancelAnimator) {
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setAlpha(
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alpha,
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animate,
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(getAlpha() < alpha) ? FADE_DURATION_IN : FADE_DURATION_OUT,
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cancelAnimator);
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}
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public void setAlpha(float alpha, boolean animate, long duration, boolean cancelAnimator) {
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if (mFadeAnimator != null && (cancelAnimator || animate)) {
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mFadeAnimator.cancel();
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}
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if (animate) {
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setVisibility(View.VISIBLE);
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mFadeAnimator = ValueAnimator.ofFloat(getAlpha(), alpha);
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mFadeAnimator.setDuration(duration);
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mFadeAnimator.setInterpolator(LINEAR);
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mFadeAnimator.addListener(mFadeListener);
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mFadeAnimator.addUpdateListener(mAlphaListener);
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mFadeAnimator.start();
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} else {
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// Discretize the alpha updates to prevent too frequent updates when there is a long
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// alpha animation
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int prevAlpha = (int) (getAlpha() * 255);
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int nextAlpha = (int) (alpha * 255);
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if (prevAlpha != nextAlpha) {
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mAlpha = nextAlpha / 255f;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setAlpha(mAlpha);
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}
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}
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}
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}
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public void setDarkIntensity(float darkIntensity) {
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mDarkIntensity = darkIntensity;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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if (mViews.get(i) instanceof ButtonInterface) {
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((ButtonInterface) mViews.get(i)).setDarkIntensity(darkIntensity);
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}
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}
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}
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public void setDelayTouchFeedback(boolean delay) {
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mDelayTouchFeedback = delay;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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if (mViews.get(i) instanceof ButtonInterface) {
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((ButtonInterface) mViews.get(i)).setDelayTouchFeedback(delay);
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}
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}
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}
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public void setOnClickListener(View.OnClickListener clickListener) {
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mClickListener = clickListener;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setOnClickListener(mClickListener);
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}
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}
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public void setOnTouchListener(View.OnTouchListener touchListener) {
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mTouchListener = touchListener;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setOnTouchListener(mTouchListener);
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}
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}
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public void setLongClickable(boolean isLongClickable) {
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mLongClickable = isLongClickable;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setLongClickable(mLongClickable);
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}
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}
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public void setOnLongClickListener(View.OnLongClickListener longClickListener) {
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mLongClickListener = longClickListener;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setOnLongClickListener(mLongClickListener);
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}
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}
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public void setOnHoverListener(View.OnHoverListener hoverListener) {
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mOnHoverListener = hoverListener;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setOnHoverListener(mOnHoverListener);
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}
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}
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public void setAccessibilityDelegate(AccessibilityDelegate delegate) {
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mAccessibilityDelegate = delegate;
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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mViews.get(i).setAccessibilityDelegate(delegate);
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}
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}
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public void setTranslation(int x, int y, int z) {
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final int numViews = mViews.size();
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for (int i = 0; i < numViews; i++) {
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final View view = mViews.get(i);
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view.setTranslationX(x);
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view.setTranslationY(y);
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view.setTranslationZ(z);
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}
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}
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public ArrayList<View> getViews() {
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return mViews;
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}
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public View getCurrentView() {
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return mCurrentView;
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}
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public void setCurrentView(View currentView) {
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mCurrentView = currentView.findViewById(mId);
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if (mImageDrawable != null) {
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mImageDrawable.setCallback(mCurrentView);
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}
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if (mCurrentView != null) {
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mCurrentView.setTranslationX(0);
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mCurrentView.setTranslationY(0);
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mCurrentView.setTranslationZ(0);
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}
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}
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/**
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* Executes when button is detached from window.
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*/
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public void onDestroy() {
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}
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}
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