148 lines
4.4 KiB
Java
148 lines
4.4 KiB
Java
/*
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* Copyright (C) Eltex ltd 2019 <eltex@eltex-co.ru>
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* FocusAwareDrawerLayout.java is part of NewPipe.
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*
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* NewPipe is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* NewPipe is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.schabi.newpipe.views;
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import android.content.Context;
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import android.graphics.Rect;
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import android.util.AttributeSet;
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import android.view.KeyEvent;
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import android.view.ViewTreeObserver;
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import android.widget.SeekBar;
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import androidx.appcompat.widget.AppCompatSeekBar;
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import org.schabi.newpipe.util.DeviceUtils;
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/**
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* SeekBar, adapted for directional navigation. It emulates touch-related callbacks
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* (onStartTrackingTouch/onStopTrackingTouch), so existing code does not need to be changed to
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* work with it.
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*/
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public final class FocusAwareSeekBar extends AppCompatSeekBar {
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private NestedListener listener;
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private ViewTreeObserver treeObserver;
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public FocusAwareSeekBar(final Context context) {
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super(context);
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}
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public FocusAwareSeekBar(final Context context, final AttributeSet attrs) {
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super(context, attrs);
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}
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public FocusAwareSeekBar(final Context context, final AttributeSet attrs,
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final int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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}
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@Override
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public void setOnSeekBarChangeListener(final OnSeekBarChangeListener l) {
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this.listener = l == null ? null : new NestedListener(l);
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super.setOnSeekBarChangeListener(listener);
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}
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@Override
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public boolean onKeyDown(final int keyCode, final KeyEvent event) {
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if (!isInTouchMode() && DeviceUtils.isConfirmKey(keyCode)) {
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releaseTrack();
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}
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return super.onKeyDown(keyCode, event);
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}
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@Override
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protected void onFocusChanged(final boolean gainFocus, final int direction,
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final Rect previouslyFocusedRect) {
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super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
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if (!isInTouchMode() && !gainFocus) {
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releaseTrack();
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}
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}
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private final ViewTreeObserver.OnTouchModeChangeListener touchModeListener = isInTouchMode -> {
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if (isInTouchMode) {
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releaseTrack();
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}
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};
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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treeObserver = getViewTreeObserver();
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treeObserver.addOnTouchModeChangeListener(touchModeListener);
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}
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@Override
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protected void onDetachedFromWindow() {
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if (treeObserver == null || !treeObserver.isAlive()) {
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treeObserver = getViewTreeObserver();
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}
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treeObserver.removeOnTouchModeChangeListener(touchModeListener);
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treeObserver = null;
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super.onDetachedFromWindow();
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}
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private void releaseTrack() {
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if (listener != null && listener.isSeeking) {
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listener.onStopTrackingTouch(this);
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}
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}
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private static final class NestedListener implements OnSeekBarChangeListener {
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private final OnSeekBarChangeListener delegate;
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boolean isSeeking;
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private NestedListener(final OnSeekBarChangeListener delegate) {
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this.delegate = delegate;
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}
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@Override
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public void onProgressChanged(final SeekBar seekBar, final int progress,
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final boolean fromUser) {
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if (!seekBar.isInTouchMode() && !isSeeking && fromUser) {
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isSeeking = true;
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onStartTrackingTouch(seekBar);
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}
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delegate.onProgressChanged(seekBar, progress, fromUser);
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}
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@Override
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public void onStartTrackingTouch(final SeekBar seekBar) {
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isSeeking = true;
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delegate.onStartTrackingTouch(seekBar);
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}
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@Override
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public void onStopTrackingTouch(final SeekBar seekBar) {
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isSeeking = false;
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delegate.onStopTrackingTouch(seekBar);
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}
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}
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}
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