/*
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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;
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import android.util.Log;
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import android.view.KeyEvent;
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import android.view.SoundEffectConstants;
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import android.view.View;
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import android.view.ViewGroup;
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import com.android.launcher3.config.FeatureFlags;
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import com.android.launcher3.folder.Folder;
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import com.android.launcher3.folder.FolderPagedView;
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import com.android.launcher3.util.FocusLogic;
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import com.android.launcher3.util.Thunk;
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/**
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* A keyboard listener we set on all the workspace icons.
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*/
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class IconKeyEventListener implements View.OnKeyListener {
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@Override
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public boolean onKey(View v, int keyCode, KeyEvent event) {
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return FocusHelper.handleIconKeyEvent(v, keyCode, event);
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}
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}
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/**
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* A keyboard listener we set on all the hotseat buttons.
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*/
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class HotseatIconKeyEventListener implements View.OnKeyListener {
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@Override
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public boolean onKey(View v, int keyCode, KeyEvent event) {
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return FocusHelper.handleHotseatButtonKeyEvent(v, keyCode, event);
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}
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}
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/**
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* A keyboard listener we set on full screen pages (e.g. custom content).
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*/
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class FullscreenKeyEventListener implements View.OnKeyListener {
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@Override
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public boolean onKey(View v, int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT
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|| keyCode == KeyEvent.KEYCODE_PAGE_DOWN || keyCode == KeyEvent.KEYCODE_PAGE_UP) {
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// Handle the key event just like a workspace icon would in these cases. In this case,
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// it will basically act as if there is a single icon in the top left (so you could
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// think of the fullscreen page as a focusable fullscreen widget).
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return FocusHelper.handleIconKeyEvent(v, keyCode, event);
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}
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return false;
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}
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}
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/**
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* TODO: Reevaluate if this is still required
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*/
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public class FocusHelper {
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private static final String TAG = "FocusHelper";
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private static final boolean DEBUG = false;
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/**
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* Handles key events in paged folder.
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*/
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public static class PagedFolderKeyEventListener implements View.OnKeyListener {
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private final Folder mFolder;
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public PagedFolderKeyEventListener(Folder folder) {
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mFolder = folder;
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}
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@Override
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public boolean onKey(View v, int keyCode, KeyEvent e) {
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boolean consume = FocusLogic.shouldConsume(keyCode);
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if (e.getAction() == KeyEvent.ACTION_UP) {
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return consume;
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}
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if (DEBUG) {
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Log.v(TAG, String.format("Handle ALL Folders keyevent=[%s].",
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KeyEvent.keyCodeToString(keyCode)));
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}
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if (!(v.getParent() instanceof ShortcutAndWidgetContainer)) {
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if (FeatureFlags.IS_DOGFOOD_BUILD) {
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throw new IllegalStateException("Parent of the focused item is not supported.");
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} else {
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return false;
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}
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}
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// Initialize variables.
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final ShortcutAndWidgetContainer itemContainer = (ShortcutAndWidgetContainer) v.getParent();
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final CellLayout cellLayout = (CellLayout) itemContainer.getParent();
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final int iconIndex = itemContainer.indexOfChild(v);
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final FolderPagedView pagedView = (FolderPagedView) cellLayout.getParent();
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final int pageIndex = pagedView.indexOfChild(cellLayout);
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final int pageCount = pagedView.getPageCount();
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final boolean isLayoutRtl = Utilities.isRtl(v.getResources());
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int[][] matrix = FocusLogic.createSparseMatrix(cellLayout);
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// Process focus.
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int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
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pageCount, isLayoutRtl);
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if (newIconIndex == FocusLogic.NOOP) {
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handleNoopKey(keyCode, v);
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return consume;
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}
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ShortcutAndWidgetContainer newParent = null;
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View child = null;
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switch (newIconIndex) {
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case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
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case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
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newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
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if (newParent != null) {
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int row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
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pagedView.snapToPage(pageIndex - 1);
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child = newParent.getChildAt(
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((newIconIndex == FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN)
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^ newParent.invertLayoutHorizontally()) ? 0 : matrix.length - 1,
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row);
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}
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break;
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case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
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newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
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if (newParent != null) {
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pagedView.snapToPage(pageIndex - 1);
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child = newParent.getChildAt(0, 0);
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}
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break;
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case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
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newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
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if (newParent != null) {
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pagedView.snapToPage(pageIndex - 1);
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child = newParent.getChildAt(matrix.length - 1, matrix[0].length - 1);
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}
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break;
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case FocusLogic.NEXT_PAGE_FIRST_ITEM:
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newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex + 1);
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if (newParent != null) {
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pagedView.snapToPage(pageIndex + 1);
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child = newParent.getChildAt(0, 0);
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}
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break;
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case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
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case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
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newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex + 1);
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if (newParent != null) {
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pagedView.snapToPage(pageIndex + 1);
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child = FocusLogic.getAdjacentChildInNextFolderPage(
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newParent, v, newIconIndex);
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}
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break;
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case FocusLogic.CURRENT_PAGE_FIRST_ITEM:
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child = cellLayout.getChildAt(0, 0);
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break;
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case FocusLogic.CURRENT_PAGE_LAST_ITEM:
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child = pagedView.getLastItem();
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break;
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default: // Go to some item on the current page.
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child = itemContainer.getChildAt(newIconIndex);
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break;
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}
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if (child != null) {
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child.requestFocus();
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playSoundEffect(keyCode, v);
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} else {
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handleNoopKey(keyCode, v);
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}
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return consume;
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}
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public void handleNoopKey(int keyCode, View v) {
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if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
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mFolder.mFolderName.requestFocus();
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playSoundEffect(keyCode, v);
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}
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}
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}
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/**
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* Handles key events in the workspace hotseat (bottom of the screen).
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* <p>Currently we don't special case for the phone UI in different orientations, even though
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* the hotseat is on the side in landscape mode. This is to ensure that accessibility
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* consistency is maintained across rotations.
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*/
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static boolean handleHotseatButtonKeyEvent(View v, int keyCode, KeyEvent e) {
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boolean consume = FocusLogic.shouldConsume(keyCode);
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if (e.getAction() == KeyEvent.ACTION_UP || !consume) {
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return consume;
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}
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final Launcher launcher = Launcher.getLauncher(v.getContext());
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final DeviceProfile profile = launcher.getDeviceProfile();
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if (DEBUG) {
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Log.v(TAG, String.format(
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"Handle HOTSEAT BUTTONS keyevent=[%s] on hotseat buttons, isVertical=%s",
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KeyEvent.keyCodeToString(keyCode), profile.isVerticalBarLayout()));
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}
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// Initialize the variables.
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final Workspace workspace = (Workspace) v.getRootView().findViewById(R.id.workspace);
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final ShortcutAndWidgetContainer hotseatParent = (ShortcutAndWidgetContainer) v.getParent();
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final CellLayout hotseatLayout = (CellLayout) hotseatParent.getParent();
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final ItemInfo itemInfo = (ItemInfo) v.getTag();
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int pageIndex = workspace.getNextPage();
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int pageCount = workspace.getChildCount();
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int iconIndex = hotseatParent.indexOfChild(v);
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int iconRank = ((CellLayout.LayoutParams) hotseatLayout.getShortcutsAndWidgets()
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.getChildAt(iconIndex).getLayoutParams()).cellX;
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final CellLayout iconLayout = (CellLayout) workspace.getChildAt(pageIndex);
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if (iconLayout == null) {
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// This check is to guard against cases where key strokes rushes in when workspace
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// child creation/deletion is still in flux. (e.g., during drop or fling
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// animation.)
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return consume;
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}
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final ViewGroup iconParent = iconLayout.getShortcutsAndWidgets();
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ViewGroup parent = null;
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int[][] matrix = null;
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if (keyCode == KeyEvent.KEYCODE_DPAD_UP &&
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!profile.isVerticalBarLayout()) {
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matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
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iconIndex += iconParent.getChildCount();
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parent = iconParent;
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} else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT &&
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profile.isVerticalBarLayout()) {
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matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
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iconIndex += iconParent.getChildCount();
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parent = iconParent;
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} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT &&
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profile.isVerticalBarLayout()) {
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keyCode = KeyEvent.KEYCODE_PAGE_DOWN;
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} else {
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// For other KEYCODE_DPAD_LEFT and KEYCODE_DPAD_RIGHT navigation, do not use the
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// matrix extended with hotseat.
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matrix = FocusLogic.createSparseMatrix(hotseatLayout);
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parent = hotseatParent;
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}
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// Process the focus.
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int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
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pageCount, Utilities.isRtl(v.getResources()));
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View newIcon = null;
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switch (newIconIndex) {
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case FocusLogic.NEXT_PAGE_FIRST_ITEM:
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parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1);
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newIcon = parent.getChildAt(0);
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// TODO(hyunyoungs): handle cases where the child is not an icon but
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// a folder or a widget.
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workspace.snapToPage(pageIndex + 1);
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break;
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case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
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parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
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newIcon = parent.getChildAt(0);
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// TODO(hyunyoungs): handle cases where the child is not an icon but
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// a folder or a widget.
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workspace.snapToPage(pageIndex - 1);
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break;
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case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
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parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
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newIcon = parent.getChildAt(parent.getChildCount() - 1);
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// TODO(hyunyoungs): handle cases where the child is not an icon but
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// a folder or a widget.
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workspace.snapToPage(pageIndex - 1);
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break;
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case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
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case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
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// Go to the previous page but keep the focus on the same hotseat icon.
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workspace.snapToPage(pageIndex - 1);
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break;
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case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
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case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
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// Go to the next page but keep the focus on the same hotseat icon.
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workspace.snapToPage(pageIndex + 1);
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break;
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}
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if (parent == iconParent && newIconIndex >= iconParent.getChildCount()) {
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newIconIndex -= iconParent.getChildCount();
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}
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if (parent != null) {
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if (newIcon == null && newIconIndex >= 0) {
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newIcon = parent.getChildAt(newIconIndex);
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}
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if (newIcon != null) {
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newIcon.requestFocus();
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playSoundEffect(keyCode, v);
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}
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}
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return consume;
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}
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/**
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* Handles key events in a workspace containing icons.
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*/
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static boolean handleIconKeyEvent(View v, int keyCode, KeyEvent e) {
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boolean consume = FocusLogic.shouldConsume(keyCode);
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if (e.getAction() == KeyEvent.ACTION_UP || !consume) {
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return consume;
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}
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Launcher launcher = Launcher.getLauncher(v.getContext());
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DeviceProfile profile = launcher.getDeviceProfile();
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if (DEBUG) {
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Log.v(TAG, String.format("Handle WORKSPACE ICONS keyevent=[%s] isVerticalBar=%s",
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KeyEvent.keyCodeToString(keyCode), profile.isVerticalBarLayout()));
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}
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// Initialize the variables.
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ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent();
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CellLayout iconLayout = (CellLayout) parent.getParent();
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final Workspace workspace = (Workspace) iconLayout.getParent();
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final ViewGroup dragLayer = (ViewGroup) workspace.getParent();
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final ViewGroup tabs = (ViewGroup) dragLayer.findViewById(R.id.drop_target_bar);
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final Hotseat hotseat = (Hotseat) dragLayer.findViewById(R.id.hotseat);
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final ItemInfo itemInfo = (ItemInfo) v.getTag();
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final int iconIndex = parent.indexOfChild(v);
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final int pageIndex = workspace.indexOfChild(iconLayout);
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final int pageCount = workspace.getChildCount();
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CellLayout hotseatLayout = (CellLayout) hotseat.getChildAt(0);
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ShortcutAndWidgetContainer hotseatParent = hotseatLayout.getShortcutsAndWidgets();
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int[][] matrix;
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// KEYCODE_DPAD_DOWN in portrait (KEYCODE_DPAD_RIGHT in landscape) is the only key allowed
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// to take a user to the hotseat. For other dpad navigation, do not use the matrix extended
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// with the hotseat.
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if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN && !profile.isVerticalBarLayout()) {
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matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
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} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT &&
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profile.isVerticalBarLayout()) {
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matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
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} else {
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matrix = FocusLogic.createSparseMatrix(iconLayout);
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}
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// Process the focus.
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int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
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pageCount, Utilities.isRtl(v.getResources()));
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boolean isRtl = Utilities.isRtl(v.getResources());
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View newIcon = null;
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CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex);
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switch (newIconIndex) {
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case FocusLogic.NOOP:
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if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
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newIcon = tabs;
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}
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break;
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case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
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case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
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int newPageIndex = pageIndex - 1;
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if (newIconIndex == FocusLogic.NEXT_PAGE_RIGHT_COLUMN) {
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newPageIndex = pageIndex + 1;
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}
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int row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
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parent = getCellLayoutChildrenForIndex(workspace, newPageIndex);
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if (parent != null) {
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iconLayout = (CellLayout) parent.getParent();
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matrix = FocusLogic.createSparseMatrixWithPivotColumn(iconLayout,
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iconLayout.getCountX(), row);
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newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, FocusLogic.PIVOT,
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newPageIndex, pageCount, Utilities.isRtl(v.getResources()));
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if (newIconIndex == FocusLogic.NEXT_PAGE_FIRST_ITEM) {
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newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex,
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isRtl);
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} else if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LAST_ITEM) {
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newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex,
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isRtl);
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} else {
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newIcon = parent.getChildAt(newIconIndex);
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}
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}
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break;
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case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
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workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex - 1);
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newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
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if (newIcon == null) {
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// Check the hotseat if no focusable item was found on the workspace.
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newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
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workspace.snapToPage(pageIndex - 1);
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}
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break;
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case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
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newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex, isRtl);
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break;
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case FocusLogic.NEXT_PAGE_FIRST_ITEM:
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newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex, isRtl);
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break;
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case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
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case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
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newPageIndex = pageIndex + 1;
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if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN) {
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newPageIndex = pageIndex - 1;
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}
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row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
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parent = getCellLayoutChildrenForIndex(workspace, newPageIndex);
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if (parent != null) {
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iconLayout = (CellLayout) parent.getParent();
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matrix = FocusLogic.createSparseMatrixWithPivotColumn(iconLayout, -1, row);
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newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, FocusLogic.PIVOT,
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newPageIndex, pageCount, Utilities.isRtl(v.getResources()));
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if (newIconIndex == FocusLogic.NEXT_PAGE_FIRST_ITEM) {
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newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex,
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isRtl);
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} else if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LAST_ITEM) {
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newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex,
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isRtl);
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} else {
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newIcon = parent.getChildAt(newIconIndex);
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}
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}
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break;
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case FocusLogic.CURRENT_PAGE_FIRST_ITEM:
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newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
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if (newIcon == null) {
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// Check the hotseat if no focusable item was found on the workspace.
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newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
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}
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break;
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case FocusLogic.CURRENT_PAGE_LAST_ITEM:
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newIcon = getFirstFocusableIconInReverseReadingOrder(workspaceLayout, isRtl);
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if (newIcon == null) {
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// Check the hotseat if no focusable item was found on the workspace.
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newIcon = getFirstFocusableIconInReverseReadingOrder(hotseatLayout, isRtl);
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}
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break;
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default:
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// current page, some item.
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if (0 <= newIconIndex && newIconIndex < parent.getChildCount()) {
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newIcon = parent.getChildAt(newIconIndex);
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} else if (parent.getChildCount() <= newIconIndex &&
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newIconIndex < parent.getChildCount() + hotseatParent.getChildCount()) {
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newIcon = hotseatParent.getChildAt(newIconIndex - parent.getChildCount());
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}
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break;
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}
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if (newIcon != null) {
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newIcon.requestFocus();
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playSoundEffect(keyCode, v);
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}
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return consume;
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}
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//
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// Helper methods.
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//
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/**
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* Private helper method to get the CellLayoutChildren given a CellLayout index.
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*/
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@Thunk static ShortcutAndWidgetContainer getCellLayoutChildrenForIndex(
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ViewGroup container, int i) {
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CellLayout parent = (CellLayout) container.getChildAt(i);
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return parent.getShortcutsAndWidgets();
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}
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/**
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* Helper method to be used for playing sound effects.
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*/
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@Thunk static void playSoundEffect(int keyCode, View v) {
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switch (keyCode) {
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case KeyEvent.KEYCODE_DPAD_LEFT:
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v.playSoundEffect(SoundEffectConstants.NAVIGATION_LEFT);
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break;
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case KeyEvent.KEYCODE_DPAD_RIGHT:
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v.playSoundEffect(SoundEffectConstants.NAVIGATION_RIGHT);
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break;
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case KeyEvent.KEYCODE_DPAD_DOWN:
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case KeyEvent.KEYCODE_PAGE_DOWN:
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case KeyEvent.KEYCODE_MOVE_END:
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v.playSoundEffect(SoundEffectConstants.NAVIGATION_DOWN);
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break;
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case KeyEvent.KEYCODE_DPAD_UP:
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case KeyEvent.KEYCODE_PAGE_UP:
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case KeyEvent.KEYCODE_MOVE_HOME:
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v.playSoundEffect(SoundEffectConstants.NAVIGATION_UP);
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break;
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default:
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break;
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}
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}
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private static View handlePreviousPageLastItem(Workspace workspace, CellLayout hotseatLayout,
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int pageIndex, boolean isRtl) {
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if (pageIndex - 1 < 0) {
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return null;
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}
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CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex - 1);
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View newIcon = getFirstFocusableIconInReverseReadingOrder(workspaceLayout, isRtl);
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if (newIcon == null) {
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// Check the hotseat if no focusable item was found on the workspace.
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newIcon = getFirstFocusableIconInReverseReadingOrder(hotseatLayout,isRtl);
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workspace.snapToPage(pageIndex - 1);
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}
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return newIcon;
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}
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private static View handleNextPageFirstItem(Workspace workspace, CellLayout hotseatLayout,
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int pageIndex, boolean isRtl) {
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if (pageIndex + 1 >= workspace.getPageCount()) {
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return null;
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}
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CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex + 1);
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View newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
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if (newIcon == null) {
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// Check the hotseat if no focusable item was found on the workspace.
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newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
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workspace.snapToPage(pageIndex + 1);
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}
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return newIcon;
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}
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private static View getFirstFocusableIconInReadingOrder(CellLayout cellLayout, boolean isRtl) {
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View icon;
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int countX = cellLayout.getCountX();
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for (int y = 0; y < cellLayout.getCountY(); y++) {
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int increment = isRtl ? -1 : 1;
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for (int x = isRtl ? countX - 1 : 0; 0 <= x && x < countX; x += increment) {
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if ((icon = cellLayout.getChildAt(x, y)) != null && icon.isFocusable()) {
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return icon;
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}
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}
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}
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return null;
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}
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private static View getFirstFocusableIconInReverseReadingOrder(CellLayout cellLayout,
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boolean isRtl) {
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View icon;
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int countX = cellLayout.getCountX();
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for (int y = cellLayout.getCountY() - 1; y >= 0; y--) {
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int increment = isRtl ? 1 : -1;
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for (int x = isRtl ? 0 : countX - 1; 0 <= x && x < countX; x += increment) {
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if ((icon = cellLayout.getChildAt(x, y)) != null && icon.isFocusable()) {
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return icon;
|
}
|
}
|
}
|
return null;
|
}
|
}
|
