Sunny Goyal
97 lines
3.8 KiB
Java
97 lines
3.8 KiB
Java
/*
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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.launcher3.accessibility;
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import android.content.Context;
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import android.os.Bundle;
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import android.util.SparseArray;
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import android.view.View;
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import android.view.View.AccessibilityDelegate;
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import android.view.accessibility.AccessibilityNodeInfo;
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import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
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import com.android.launcher3.R;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.Workspace;
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import com.android.launcher3.config.FeatureFlags;
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public class OverviewScreenAccessibilityDelegate extends AccessibilityDelegate {
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private static final int MOVE_BACKWARD = R.id.action_move_screen_backwards;
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private static final int MOVE_FORWARD = R.id.action_move_screen_forwards;
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private final SparseArray<AccessibilityAction> mActions = new SparseArray<>();
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private final Workspace mWorkspace;
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public OverviewScreenAccessibilityDelegate(Workspace workspace) {
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mWorkspace = workspace;
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Context context = mWorkspace.getContext();
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boolean isRtl = Utilities.isRtl(context.getResources());
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mActions.put(MOVE_BACKWARD, new AccessibilityAction(MOVE_BACKWARD,
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context.getText(isRtl ? R.string.action_move_screen_right :
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R.string.action_move_screen_left)));
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mActions.put(MOVE_FORWARD, new AccessibilityAction(MOVE_FORWARD,
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context.getText(isRtl ? R.string.action_move_screen_left :
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R.string.action_move_screen_right)));
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}
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@Override
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public boolean performAccessibilityAction(View host, int action, Bundle args) {
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if (host != null) {
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if (action == AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS ) {
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int index = mWorkspace.indexOfChild(host);
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mWorkspace.setCurrentPage(index);
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} else if (action == MOVE_FORWARD) {
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movePage(mWorkspace.indexOfChild(host) + 1, host);
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return true;
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} else if (action == MOVE_BACKWARD) {
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movePage(mWorkspace.indexOfChild(host) - 1, host);
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return true;
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}
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}
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return super.performAccessibilityAction(host, action, args);
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}
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private void movePage(int finalIndex, View view) {
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mWorkspace.onStartReordering();
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mWorkspace.removeView(view);
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mWorkspace.addView(view, finalIndex);
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mWorkspace.onEndReordering();
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mWorkspace.announceForAccessibility(mWorkspace.getContext().getText(R.string.screen_moved));
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mWorkspace.updateAccessibilityFlags();
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view.performAccessibilityAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS, null);
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}
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@Override
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public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
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super.onInitializeAccessibilityNodeInfo(host, info);
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int index = mWorkspace.indexOfChild(host);
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if (index < mWorkspace.getChildCount() - 1) {
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info.addAction(mActions.get(MOVE_FORWARD));
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}
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int startIndex = mWorkspace.numCustomPages() + (FeatureFlags.QSB_ON_FIRST_SCREEN ? 1 : 0);
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if (index > startIndex) {
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info.addAction(mActions.get(MOVE_BACKWARD));
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}
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}
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}
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