/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.Mylauncher2;
import android.content.res.Configuration;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.TabHost;
import android.widget.TabWidget;
import com.android.Mylauncher.R;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
/**
* A keyboard listener we set on all the workspace icons.
*/
class IconKeyEventListener implements View.OnKeyListener {
public boolean onKey(View v, int keyCode, KeyEvent event) {
return FocusHelper.handleIconKeyEvent(v, keyCode, event);
}
}
/**
* A keyboard listener we set on all the workspace icons.
*/
class FolderKeyEventListener implements View.OnKeyListener {
public boolean onKey(View v, int keyCode, KeyEvent event) {
return FocusHelper.handleFolderKeyEvent(v, keyCode, event);
}
}
/**
* A keyboard listener we set on all the hotseat buttons.
*/
class HotseatIconKeyEventListener implements View.OnKeyListener {
public boolean onKey(View v, int keyCode, KeyEvent event) {
final Configuration configuration = v.getResources().getConfiguration();
return FocusHelper.handleHotseatButtonKeyEvent(v, keyCode, event, configuration.orientation);
}
}
/**
* A keyboard listener we set on the last tab button in AppsCustomize to jump to then
* market icon and vice versa.
*/
class AppsCustomizeTabKeyEventListener implements View.OnKeyListener {
public boolean onKey(View v, int keyCode, KeyEvent event) {
return FocusHelper.handleAppsCustomizeTabKeyEvent(v, keyCode, event);
}
}
public class FocusHelper {
/**
* Private helper to get the parent TabHost in the view hiearchy.
*/
private static TabHost findTabHostParent(View v) {
ViewParent p = v.getParent();
while (p != null && !(p instanceof TabHost)) {
p = p.getParent();
}
return (TabHost) p;
}
/**
* Handles key events in a AppsCustomize tab between the last tab view and the shop button.
*/
static boolean handleAppsCustomizeTabKeyEvent(View v, int keyCode, KeyEvent e) {
final TabHost tabHost = findTabHostParent(v);
final ViewGroup contents = tabHost.getTabContentView();
final View shop = tabHost.findViewById(R.id.market_button);
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the shop button if we aren't on it
if (v != shop) {
shop.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the content view (down is handled by the tab key handler otherwise)
if (v == shop) {
contents.requestFocus();
wasHandled = true;
}
}
break;
default: break;
}
return wasHandled;
}
/**
* Returns the Viewgroup containing page contents for the page at the index specified.
*/
private static ViewGroup getAppsCustomizePage(ViewGroup container, int index) {
ViewGroup page = (ViewGroup) ((PagedView) container).getPageAt(index);
if (page instanceof PagedViewCellLayout) {
// There are two layers, a PagedViewCellLayout and PagedViewCellLayoutChildren
page = (ViewGroup) page.getChildAt(0);
}
return page;
}
/**
* Handles key events in a PageViewExtendedLayout containing PagedViewWidgets.
*/
static boolean handlePagedViewGridLayoutWidgetKeyEvent(PagedViewWidget w, int keyCode,
KeyEvent e) {
final PagedViewGridLayout parent = (PagedViewGridLayout) w.getParent();
final PagedView container = (PagedView) parent.getParent();
final TabHost tabHost = findTabHostParent(container);
final TabWidget tabs = tabHost.getTabWidget();
final int widgetIndex = parent.indexOfChild(w);
final int widgetCount = parent.getChildCount();
final int pageIndex = ((PagedView) container).indexToPage(container.indexOfChild(parent));
final int pageCount = container.getChildCount();
final int cellCountX = parent.getCellCountX();
final int cellCountY = parent.getCellCountY();
final int x = widgetIndex % cellCountX;
final int y = widgetIndex / cellCountX;
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
ViewGroup newParent = null;
// Now that we load items in the bg asynchronously, we can't just focus
// child siblings willy-nilly
View child = null;
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous widget or the last widget on the previous page
if (widgetIndex > 0) {
parent.getChildAt(widgetIndex - 1).requestFocus();
} else {
if (pageIndex > 0) {
newParent = getAppsCustomizePage(container, pageIndex - 1);
if (newParent != null) {
child = newParent.getChildAt(newParent.getChildCount() - 1);
if (child != null) child.requestFocus();
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next widget or the first widget on the next page
if (widgetIndex < (widgetCount - 1)) {
parent.getChildAt(widgetIndex + 1).requestFocus();
} else {
if (pageIndex < (pageCount - 1)) {
newParent = getAppsCustomizePage(container, pageIndex + 1);
if (newParent != null) {
child = newParent.getChildAt(0);
if (child != null) child.requestFocus();
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (handleKeyEvent) {
// Select the closest icon in the previous row, otherwise select the tab bar
if (y > 0) {
int newWidgetIndex = ((y - 1) * cellCountX) + x;
child = parent.getChildAt(newWidgetIndex);
if (child != null) child.requestFocus();
} else {
tabs.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the closest icon in the previous row, otherwise do nothing
if (y < (cellCountY - 1)) {
int newWidgetIndex = Math.min(widgetCount - 1, ((y + 1) * cellCountX) + x);
child = parent.getChildAt(newWidgetIndex);
if (child != null) child.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
if (handleKeyEvent) {
// Simulate a click on the widget
View.OnClickListener clickListener = (View.OnClickListener) container;
clickListener.onClick(w);
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_PAGE_UP:
if (handleKeyEvent) {
// Select the first item on the previous page, or the first item on this page
// if there is no previous page
if (pageIndex > 0) {
newParent = getAppsCustomizePage(container, pageIndex - 1);
if (newParent != null) {
child = newParent.getChildAt(0);
}
} else {
child = parent.getChildAt(0);
}
if (child != null) child.requestFocus();
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_PAGE_DOWN:
if (handleKeyEvent) {
// Select the first item on the next page, or the last item on this page
// if there is no next page
if (pageIndex < (pageCount - 1)) {
newParent = getAppsCustomizePage(container, pageIndex + 1);
if (newParent != null) {
child = newParent.getChildAt(0);
}
} else {
child = parent.getChildAt(widgetCount - 1);
}
if (child != null) child.requestFocus();
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_HOME:
if (handleKeyEvent) {
// Select the first item on this page
child = parent.getChildAt(0);
if (child != null) child.requestFocus();
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_END:
if (handleKeyEvent) {
// Select the last item on this page
parent.getChildAt(widgetCount - 1).requestFocus();
}
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
/**
* Handles key events in a PageViewCellLayout containing PagedViewIcons.
*/
static boolean handleAppsCustomizeKeyEvent(View v, int keyCode, KeyEvent e) {
ViewGroup parentLayout;
ViewGroup itemContainer;
int countX;
int countY;
if (v.getParent() instanceof PagedViewCellLayoutChildren) {
itemContainer = (ViewGroup) v.getParent();
parentLayout = (ViewGroup) itemContainer.getParent();
countX = ((PagedViewCellLayout) parentLayout).getCellCountX();
countY = ((PagedViewCellLayout) parentLayout).getCellCountY();
} else {
itemContainer = parentLayout = (ViewGroup) v.getParent();
countX = ((PagedViewGridLayout) parentLayout).getCellCountX();
countY = ((PagedViewGridLayout) parentLayout).getCellCountY();
}
// Note we have an extra parent because of the
// PagedViewCellLayout/PagedViewCellLayoutChildren relationship
final PagedView container = (PagedView) parentLayout.getParent();
final TabHost tabHost = findTabHostParent(container);
final TabWidget tabs = tabHost.getTabWidget();
final int iconIndex = itemContainer.indexOfChild(v);
final int itemCount = itemContainer.getChildCount();
final int pageIndex = ((PagedView) container).indexToPage(container.indexOfChild(parentLayout));
final int pageCount = container.getChildCount();
final int x = iconIndex % countX;
final int y = iconIndex / countX;
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
ViewGroup newParent = null;
// Side pages do not always load synchronously, so check before focusing child siblings
// willy-nilly
View child = null;
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous icon or the last icon on the previous page
if (iconIndex > 0) {
itemContainer.getChildAt(iconIndex - 1).requestFocus();
} else {
if (pageIndex > 0) {
newParent = getAppsCustomizePage(container, pageIndex - 1);
if (newParent != null) {
container.snapToPage(pageIndex - 1);
child = newParent.getChildAt(newParent.getChildCount() - 1);
if (child != null) child.requestFocus();
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next icon or the first icon on the next page
if (iconIndex < (itemCount - 1)) {
itemContainer.getChildAt(iconIndex + 1).requestFocus();
} else {
if (pageIndex < (pageCount - 1)) {
newParent = getAppsCustomizePage(container, pageIndex + 1);
if (newParent != null) {
container.snapToPage(pageIndex + 1);
child = newParent.getChildAt(0);
if (child != null) child.requestFocus();
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (handleKeyEvent) {
// Select the closest icon in the previous row, otherwise select the tab bar
if (y > 0) {
int newiconIndex = ((y - 1) * countX) + x;
itemContainer.getChildAt(newiconIndex).requestFocus();
} else {
tabs.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the closest icon in the previous row, otherwise do nothing
if (y < (countY - 1)) {
int newiconIndex = Math.min(itemCount - 1, ((y + 1) * countX) + x);
itemContainer.getChildAt(newiconIndex).requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
if (handleKeyEvent) {
// Simulate a click on the icon
View.OnClickListener clickListener = (View.OnClickListener) container;
clickListener.onClick(v);
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_PAGE_UP:
if (handleKeyEvent) {
// Select the first icon on the previous page, or the first icon on this page
// if there is no previous page
if (pageIndex > 0) {
newParent = getAppsCustomizePage(container, pageIndex - 1);
if (newParent != null) {
container.snapToPage(pageIndex - 1);
child = newParent.getChildAt(0);
if (child != null) child.requestFocus();
}
} else {
itemContainer.getChildAt(0).requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_PAGE_DOWN:
if (handleKeyEvent) {
// Select the first icon on the next page, or the last icon on this page
// if there is no next page
if (pageIndex < (pageCount - 1)) {
newParent = getAppsCustomizePage(container, pageIndex + 1);
if (newParent != null) {
container.snapToPage(pageIndex + 1);
child = newParent.getChildAt(0);
if (child != null) child.requestFocus();
}
} else {
itemContainer.getChildAt(itemCount - 1).requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_HOME:
if (handleKeyEvent) {
// Select the first icon on this page
itemContainer.getChildAt(0).requestFocus();
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_END:
if (handleKeyEvent) {
// Select the last icon on this page
itemContainer.getChildAt(itemCount - 1).requestFocus();
}
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
/**
* Handles key events in the tab widget.
*/
static boolean handleTabKeyEvent(AccessibleTabView v, int keyCode, KeyEvent e) {
if (!LauncherApplication.isScreenLarge()) return false;
final FocusOnlyTabWidget parent = (FocusOnlyTabWidget) v.getParent();
final TabHost tabHost = findTabHostParent(parent);
final ViewGroup contents = tabHost.getTabContentView();
final int tabCount = parent.getTabCount();
final int tabIndex = parent.getChildTabIndex(v);
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous tab
if (tabIndex > 0) {
parent.getChildTabViewAt(tabIndex - 1).requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next tab, or if the last tab has a focus right id, select that
if (tabIndex < (tabCount - 1)) {
parent.getChildTabViewAt(tabIndex + 1).requestFocus();
} else {
if (v.getNextFocusRightId() != View.NO_ID) {
tabHost.findViewById(v.getNextFocusRightId()).requestFocus();
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
// Do nothing
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the content view
contents.requestFocus();
}
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
/**
* Handles key events in the workspace hotseat (bottom of the screen).
*/
static boolean handleHotseatButtonKeyEvent(View v, int keyCode, KeyEvent e, int orientation) {
final ViewGroup parent = (ViewGroup) v.getParent();
final ViewGroup launcher = (ViewGroup) parent.getParent();
final Workspace workspace = (Workspace) launcher.findViewById(R.id.workspace);
final int buttonIndex = parent.indexOfChild(v);
final int buttonCount = parent.getChildCount();
final int pageIndex = workspace.getCurrentPage();
// NOTE: currently we don't special case for the phone UI in different
// orientations, even though the hotseat is on the side in landscape mode. This
// is to ensure that accessibility consistency is maintained across rotations.
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous button, otherwise snap to the previous page
if (buttonIndex > 0) {
parent.getChildAt(buttonIndex - 1).requestFocus();
} else {
workspace.snapToPage(pageIndex - 1);
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next button, otherwise snap to the next page
if (buttonIndex < (buttonCount - 1)) {
parent.getChildAt(buttonIndex + 1).requestFocus();
} else {
workspace.snapToPage(pageIndex + 1);
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (handleKeyEvent) {
// Select the first bubble text view in the current page of the workspace
final CellLayout layout = (CellLayout) workspace.getChildAt(pageIndex);
final ShortcutAndWidgetContainer children = layout.getShortcutsAndWidgets();
final View newIcon = getIconInDirection(layout, children, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
workspace.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
// Do nothing
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
/**
* Private helper method to get the CellLayoutChildren given a CellLayout index.
*/
private static ShortcutAndWidgetContainer getCellLayoutChildrenForIndex(
ViewGroup container, int i) {
ViewGroup parent = (ViewGroup) container.getChildAt(i);
return (ShortcutAndWidgetContainer) parent.getChildAt(0);
}
/**
* Private helper method to sort all the CellLayout children in order of their (x,y) spatially
* from top left to bottom right.
*/
private static ArrayList<View> getCellLayoutChildrenSortedSpatially(CellLayout layout,
ViewGroup parent) {
// First we order each the CellLayout children by their x,y coordinates
final int cellCountX = layout.getCountX();
final int count = parent.getChildCount();
ArrayList<View> views = new ArrayList<View>();
for (int j = 0; j < count; ++j) {
views.add(parent.getChildAt(j));
}
Collections.sort(views, new Comparator<View>() {
@Override
public int compare(View lhs, View rhs) {
CellLayout.LayoutParams llp = (CellLayout.LayoutParams) lhs.getLayoutParams();
CellLayout.LayoutParams rlp = (CellLayout.LayoutParams) rhs.getLayoutParams();
int lvIndex = (llp.cellY * cellCountX) + llp.cellX;
int rvIndex = (rlp.cellY * cellCountX) + rlp.cellX;
return lvIndex - rvIndex;
}
});
return views;
}
/**
* Private helper method to find the index of the next BubbleTextView or FolderIcon in the
* direction delta.
*
* @param delta either -1 or 1 depending on the direction we want to search
*/
private static View findIndexOfIcon(ArrayList<View> views, int i, int delta) {
// Then we find the next BubbleTextView offset by delta from i
final int count = views.size();
int newI = i + delta;
while (0 <= newI && newI < count) {
View newV = views.get(newI);
if (newV instanceof BubbleTextView || newV instanceof FolderIcon) {
return newV;
}
newI += delta;
}
return null;
}
private static View getIconInDirection(CellLayout layout, ViewGroup parent, int i,
int delta) {
final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent);
return findIndexOfIcon(views, i, delta);
}
private static View getIconInDirection(CellLayout layout, ViewGroup parent, View v,
int delta) {
final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent);
return findIndexOfIcon(views, views.indexOf(v), delta);
}
/**
* Private helper method to find the next closest BubbleTextView or FolderIcon in the direction
* delta on the next line.
*
* @param delta either -1 or 1 depending on the line and direction we want to search
*/
private static View getClosestIconOnLine(CellLayout layout, ViewGroup parent, View v,
int lineDelta) {
final ArrayList<View> views = getCellLayoutChildrenSortedSpatially(layout, parent);
final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) v.getLayoutParams();
final int cellCountY = layout.getCountY();
final int row = lp.cellY;
final int newRow = row + lineDelta;
if (0 <= newRow && newRow < cellCountY) {
float closestDistance = Float.MAX_VALUE;
int closestIndex = -1;
int index = views.indexOf(v);
int endIndex = (lineDelta < 0) ? -1 : views.size();
while (index != endIndex) {
View newV = views.get(index);
CellLayout.LayoutParams tmpLp = (CellLayout.LayoutParams) newV.getLayoutParams();
boolean satisfiesRow = (lineDelta < 0) ? (tmpLp.cellY < row) : (tmpLp.cellY > row);
if (satisfiesRow &&
(newV instanceof BubbleTextView || newV instanceof FolderIcon)) {
float tmpDistance = (float) Math.sqrt(Math.pow(tmpLp.cellX - lp.cellX, 2) +
Math.pow(tmpLp.cellY - lp.cellY, 2));
if (tmpDistance < closestDistance) {
closestIndex = index;
closestDistance = tmpDistance;
}
}
if (index <= endIndex) {
++index;
} else {
--index;
}
}
if (closestIndex > -1) {
return views.get(closestIndex);
}
}
return null;
}
/**
* Handles key events in a Workspace containing.
*/
static boolean handleIconKeyEvent(View v, int keyCode, KeyEvent e) {
ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent();
final CellLayout layout = (CellLayout) parent.getParent();
final Workspace workspace = (Workspace) layout.getParent();
final ViewGroup launcher = (ViewGroup) workspace.getParent();
final ViewGroup tabs = (ViewGroup) launcher.findViewById(R.id.qsb_bar);
final ViewGroup hotseat = (ViewGroup) launcher.findViewById(R.id.hotseat);
int pageIndex = workspace.indexOfChild(layout);
int pageCount = workspace.getChildCount();
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous icon or the last icon on the previous page if possible
View newIcon = getIconInDirection(layout, parent, v, -1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
if (pageIndex > 0) {
parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
newIcon = getIconInDirection(layout, parent,
parent.getChildCount(), -1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
// Snap to the previous page
workspace.snapToPage(pageIndex - 1);
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next icon or the first icon on the next page if possible
View newIcon = getIconInDirection(layout, parent, v, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
if (pageIndex < (pageCount - 1)) {
parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1);
newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
// Snap to the next page
workspace.snapToPage(pageIndex + 1);
}
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (handleKeyEvent) {
// Select the closest icon in the previous line, otherwise select the tab bar
View newIcon = getClosestIconOnLine(layout, parent, v, -1);
if (newIcon != null) {
newIcon.requestFocus();
wasHandled = true;
} else {
tabs.requestFocus();
}
}
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the closest icon in the next line, otherwise select the button bar
View newIcon = getClosestIconOnLine(layout, parent, v, 1);
if (newIcon != null) {
newIcon.requestFocus();
wasHandled = true;
} else if (hotseat != null) {
hotseat.requestFocus();
}
}
break;
case KeyEvent.KEYCODE_PAGE_UP:
if (handleKeyEvent) {
// Select the first icon on the previous page or the first icon on this page
// if there is no previous page
if (pageIndex > 0) {
parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
View newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
// Snap to the previous page
workspace.snapToPage(pageIndex - 1);
}
} else {
View newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_PAGE_DOWN:
if (handleKeyEvent) {
// Select the first icon on the next page or the last icon on this page
// if there is no previous page
if (pageIndex < (pageCount - 1)) {
parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1);
View newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
// Snap to the next page
workspace.snapToPage(pageIndex + 1);
}
} else {
View newIcon = getIconInDirection(layout, parent,
parent.getChildCount(), -1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_HOME:
if (handleKeyEvent) {
// Select the first icon on this page
View newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_END:
if (handleKeyEvent) {
// Select the last icon on this page
View newIcon = getIconInDirection(layout, parent,
parent.getChildCount(), -1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
/**
* Handles key events for items in a Folder.
*/
static boolean handleFolderKeyEvent(View v, int keyCode, KeyEvent e) {
ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent();
final CellLayout layout = (CellLayout) parent.getParent();
final Folder folder = (Folder) layout.getParent();
View title = folder.mFolderName;
final int action = e.getAction();
final boolean handleKeyEvent = (action != KeyEvent.ACTION_UP);
boolean wasHandled = false;
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (handleKeyEvent) {
// Select the previous icon
View newIcon = getIconInDirection(layout, parent, v, -1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (handleKeyEvent) {
// Select the next icon
View newIcon = getIconInDirection(layout, parent, v, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
title.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (handleKeyEvent) {
// Select the closest icon in the previous line
View newIcon = getClosestIconOnLine(layout, parent, v, -1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (handleKeyEvent) {
// Select the closest icon in the next line
View newIcon = getClosestIconOnLine(layout, parent, v, 1);
if (newIcon != null) {
newIcon.requestFocus();
} else {
title.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_HOME:
if (handleKeyEvent) {
// Select the first icon on this page
View newIcon = getIconInDirection(layout, parent, -1, 1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
case KeyEvent.KEYCODE_MOVE_END:
if (handleKeyEvent) {
// Select the last icon on this page
View newIcon = getIconInDirection(layout, parent,
parent.getChildCount(), -1);
if (newIcon != null) {
newIcon.requestFocus();
}
}
wasHandled = true;
break;
default: break;
}
return wasHandled;
}
}