mirror of https://github.com/TeamNewPipe/NewPipe
116 lines
4.0 KiB
Java
116 lines
4.0 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.annotation.SuppressLint;
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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.View;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.drawerlayout.widget.DrawerLayout;
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import java.util.ArrayList;
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public final class FocusAwareDrawerLayout extends DrawerLayout {
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public FocusAwareDrawerLayout(@NonNull final Context context) {
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super(context);
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}
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public FocusAwareDrawerLayout(@NonNull final Context context,
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@Nullable final AttributeSet attrs) {
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super(context, attrs);
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}
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public FocusAwareDrawerLayout(@NonNull final Context context,
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@Nullable final AttributeSet attrs,
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final int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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protected boolean onRequestFocusInDescendants(final int direction,
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final Rect previouslyFocusedRect) {
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// SDK implementation of this method picks whatever visible View takes the focus first
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// without regard to addFocusables. If the open drawer is temporarily empty, the focus
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// escapes outside of it, which can be confusing
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boolean hasOpenPanels = false;
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for (int i = 0; i < getChildCount(); ++i) {
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final View child = getChildAt(i);
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final DrawerLayout.LayoutParams lp
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= (DrawerLayout.LayoutParams) child.getLayoutParams();
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if (lp.gravity != 0 && isDrawerVisible(child)) {
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hasOpenPanels = true;
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if (child.requestFocus(direction, previouslyFocusedRect)) {
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return true;
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}
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}
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}
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if (hasOpenPanels) {
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return false;
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}
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return super.onRequestFocusInDescendants(direction, previouslyFocusedRect);
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}
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@Override
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public void addFocusables(final ArrayList<View> views, final int direction,
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final int focusableMode) {
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boolean hasOpenPanels = false;
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View content = null;
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for (int i = 0; i < getChildCount(); ++i) {
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final View child = getChildAt(i);
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final DrawerLayout.LayoutParams lp
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= (DrawerLayout.LayoutParams) child.getLayoutParams();
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if (lp.gravity == 0) {
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content = child;
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} else {
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if (isDrawerVisible(child)) {
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hasOpenPanels = true;
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child.addFocusables(views, direction, focusableMode);
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}
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}
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}
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if (content != null && !hasOpenPanels) {
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content.addFocusables(views, direction, focusableMode);
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}
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}
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// this override isn't strictly necessary, but it is helpful when DrawerLayout isn't
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// the topmost view in hierarchy (such as when system or builtin appcompat ActionBar is used)
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@Override
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@SuppressLint("RtlHardcoded")
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public void openDrawer(@NonNull final View drawerView, final boolean animate) {
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super.openDrawer(drawerView, animate);
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drawerView.requestFocus(FOCUS_FORWARD);
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}
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}
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