Removing unused keyboard handling code
Bug: 178781566
Test: Presubmit
Change-Id: I997a7980f4ae2cef1e599ca2cadffc56df5f296e
diff --git a/src/com/android/launcher3/AppWidgetResizeFrame.java b/src/com/android/launcher3/AppWidgetResizeFrame.java
index bc3e341..8df5412 100644
--- a/src/com/android/launcher3/AppWidgetResizeFrame.java
+++ b/src/com/android/launcher3/AppWidgetResizeFrame.java
@@ -21,7 +21,6 @@
import com.android.launcher3.accessibility.DragViewStateAnnouncer;
import com.android.launcher3.dragndrop.DragLayer;
-import com.android.launcher3.util.FocusLogic;
import com.android.launcher3.util.MainThreadInitializedObject;
import com.android.launcher3.widget.LauncherAppWidgetHostView;
@@ -476,7 +475,7 @@
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// Clear the frame and give focus to the widget host view when a directional key is pressed.
- if (FocusLogic.shouldConsume(keyCode)) {
+ if (shouldConsume(keyCode)) {
close(false);
mWidgetView.requestFocus();
return true;
@@ -599,4 +598,14 @@
return moveEnd ? out.size() - size() : size() - out.size();
}
}
+
+ /**
+ * Returns true only if this utility class handles the key code.
+ */
+ public static boolean shouldConsume(int keyCode) {
+ return (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT
+ || keyCode == KeyEvent.KEYCODE_DPAD_UP || keyCode == KeyEvent.KEYCODE_DPAD_DOWN
+ || keyCode == KeyEvent.KEYCODE_MOVE_HOME || keyCode == KeyEvent.KEYCODE_MOVE_END
+ || keyCode == KeyEvent.KEYCODE_PAGE_UP || keyCode == KeyEvent.KEYCODE_PAGE_DOWN);
+ }
}
diff --git a/src/com/android/launcher3/FocusHelper.java b/src/com/android/launcher3/FocusHelper.java
deleted file mode 100644
index e5aecf7..0000000
--- a/src/com/android/launcher3/FocusHelper.java
+++ /dev/null
@@ -1,567 +0,0 @@
-/*
- * Copyright (C) 2015 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.launcher3;
-
-import android.util.Log;
-import android.view.KeyEvent;
-import android.view.SoundEffectConstants;
-import android.view.View;
-import android.view.ViewGroup;
-
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.folder.Folder;
-import com.android.launcher3.folder.FolderPagedView;
-import com.android.launcher3.model.data.ItemInfo;
-import com.android.launcher3.util.FocusLogic;
-import com.android.launcher3.util.Thunk;
-
-/**
- * A keyboard listener we set on all the workspace icons.
- */
-class IconKeyEventListener implements View.OnKeyListener {
- @Override
- public boolean onKey(View v, int keyCode, KeyEvent event) {
- return FocusHelper.handleIconKeyEvent(v, keyCode, event);
- }
-}
-
-/**
- * A keyboard listener we set on all the hotseat buttons.
- */
-class HotseatIconKeyEventListener implements View.OnKeyListener {
- @Override
- public boolean onKey(View v, int keyCode, KeyEvent event) {
- return FocusHelper.handleHotseatButtonKeyEvent(v, keyCode, event);
- }
-}
-
-/**
- * A keyboard listener we set on full screen pages (e.g. custom content).
- */
-class FullscreenKeyEventListener implements View.OnKeyListener {
- @Override
- public boolean onKey(View v, int keyCode, KeyEvent event) {
- if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT
- || keyCode == KeyEvent.KEYCODE_PAGE_DOWN || keyCode == KeyEvent.KEYCODE_PAGE_UP) {
- // Handle the key event just like a workspace icon would in these cases. In this case,
- // it will basically act as if there is a single icon in the top left (so you could
- // think of the fullscreen page as a focusable fullscreen widget).
- return FocusHelper.handleIconKeyEvent(v, keyCode, event);
- }
- return false;
- }
-}
-
-/**
- * TODO: Reevaluate if this is still required
- */
-public class FocusHelper {
-
- private static final String TAG = "FocusHelper";
- private static final boolean DEBUG = false;
-
- /**
- * Handles key events in paged folder.
- */
- public static class PagedFolderKeyEventListener implements View.OnKeyListener {
-
- private final Folder mFolder;
-
- public PagedFolderKeyEventListener(Folder folder) {
- mFolder = folder;
- }
-
- @Override
- public boolean onKey(View v, int keyCode, KeyEvent e) {
- boolean consume = FocusLogic.shouldConsume(keyCode);
- if (e.getAction() == KeyEvent.ACTION_UP) {
- return consume;
- }
- if (DEBUG) {
- Log.v(TAG, String.format("Handle ALL Folders keyevent=[%s].",
- KeyEvent.keyCodeToString(keyCode)));
- }
-
- if (!(v.getParent() instanceof ShortcutAndWidgetContainer)) {
- if (FeatureFlags.IS_STUDIO_BUILD) {
- throw new IllegalStateException("Parent of the focused item is not supported.");
- } else {
- return false;
- }
- }
-
- // Initialize variables.
- final ShortcutAndWidgetContainer itemContainer = (ShortcutAndWidgetContainer) v.getParent();
- final CellLayout cellLayout = (CellLayout) itemContainer.getParent();
-
- final int iconIndex = itemContainer.indexOfChild(v);
- final FolderPagedView pagedView = (FolderPagedView) cellLayout.getParent();
-
- final int pageIndex = pagedView.indexOfChild(cellLayout);
- final int pageCount = pagedView.getPageCount();
- final boolean isLayoutRtl = Utilities.isRtl(v.getResources());
-
- int[][] matrix = FocusLogic.createSparseMatrix(cellLayout);
- // Process focus.
- int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
- pageCount, isLayoutRtl);
- if (newIconIndex == FocusLogic.NOOP) {
- handleNoopKey(keyCode, v);
- return consume;
- }
- ShortcutAndWidgetContainer newParent = null;
- View child = null;
-
- switch (newIconIndex) {
- case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
- case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
- newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
- if (newParent != null) {
- int row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
- pagedView.snapToPage(pageIndex - 1);
- child = newParent.getChildAt(
- ((newIconIndex == FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN)
- ^ newParent.invertLayoutHorizontally()) ? 0 : matrix.length - 1,
- row);
- }
- break;
- case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
- newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
- if (newParent != null) {
- pagedView.snapToPage(pageIndex - 1);
- child = newParent.getChildAt(0, 0);
- }
- break;
- case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
- newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex - 1);
- if (newParent != null) {
- pagedView.snapToPage(pageIndex - 1);
- child = newParent.getChildAt(matrix.length - 1, matrix[0].length - 1);
- }
- break;
- case FocusLogic.NEXT_PAGE_FIRST_ITEM:
- newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex + 1);
- if (newParent != null) {
- pagedView.snapToPage(pageIndex + 1);
- child = newParent.getChildAt(0, 0);
- }
- break;
- case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
- case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
- newParent = getCellLayoutChildrenForIndex(pagedView, pageIndex + 1);
- if (newParent != null) {
- pagedView.snapToPage(pageIndex + 1);
- child = FocusLogic.getAdjacentChildInNextFolderPage(
- newParent, v, newIconIndex);
- }
- break;
- case FocusLogic.CURRENT_PAGE_FIRST_ITEM:
- child = cellLayout.getChildAt(0, 0);
- break;
- case FocusLogic.CURRENT_PAGE_LAST_ITEM:
- child = pagedView.getLastItem();
- break;
- default: // Go to some item on the current page.
- child = itemContainer.getChildAt(newIconIndex);
- break;
- }
- if (child != null) {
- child.requestFocus();
- playSoundEffect(keyCode, v);
- } else {
- handleNoopKey(keyCode, v);
- }
- return consume;
- }
-
- public void handleNoopKey(int keyCode, View v) {
- if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
- mFolder.mFolderName.requestFocus();
- playSoundEffect(keyCode, v);
- }
- }
- }
-
- /**
- * Handles key events in the workspace hotseat (bottom of the screen).
- * <p>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.
- */
- static boolean handleHotseatButtonKeyEvent(View v, int keyCode, KeyEvent e) {
- boolean consume = FocusLogic.shouldConsume(keyCode);
- if (e.getAction() == KeyEvent.ACTION_UP || !consume) {
- return consume;
- }
-
- final Launcher launcher = Launcher.getLauncher(v.getContext());
- final DeviceProfile profile = launcher.getDeviceProfile();
-
- if (DEBUG) {
- Log.v(TAG, String.format(
- "Handle HOTSEAT BUTTONS keyevent=[%s] on hotseat buttons, isVertical=%s",
- KeyEvent.keyCodeToString(keyCode), profile.isVerticalBarLayout()));
- }
-
- // Initialize the variables.
- final Workspace workspace = (Workspace) v.getRootView().findViewById(R.id.workspace);
- final ShortcutAndWidgetContainer hotseatParent = (ShortcutAndWidgetContainer) v.getParent();
- final CellLayout hotseatLayout = (CellLayout) hotseatParent.getParent();
-
- final ItemInfo itemInfo = (ItemInfo) v.getTag();
- int pageIndex = workspace.getNextPage();
- int pageCount = workspace.getChildCount();
- int iconIndex = hotseatParent.indexOfChild(v);
- int iconRank = ((CellLayout.LayoutParams) hotseatLayout.getShortcutsAndWidgets()
- .getChildAt(iconIndex).getLayoutParams()).cellX;
-
- final CellLayout iconLayout = (CellLayout) workspace.getChildAt(pageIndex);
- if (iconLayout == null) {
- // This check is to guard against cases where key strokes rushes in when workspace
- // child creation/deletion is still in flux. (e.g., during drop or fling
- // animation.)
- return consume;
- }
- final ViewGroup iconParent = iconLayout.getShortcutsAndWidgets();
-
- ViewGroup parent = null;
- int[][] matrix = null;
-
- if (keyCode == KeyEvent.KEYCODE_DPAD_UP &&
- !profile.isVerticalBarLayout()) {
- matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
- iconIndex += iconParent.getChildCount();
- parent = iconParent;
- } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT &&
- profile.isVerticalBarLayout()) {
- matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
- iconIndex += iconParent.getChildCount();
- parent = iconParent;
- } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT &&
- profile.isVerticalBarLayout()) {
- keyCode = KeyEvent.KEYCODE_PAGE_DOWN;
- } else {
- // For other KEYCODE_DPAD_LEFT and KEYCODE_DPAD_RIGHT navigation, do not use the
- // matrix extended with hotseat.
- matrix = FocusLogic.createSparseMatrix(hotseatLayout);
- parent = hotseatParent;
- }
-
- // Process the focus.
- int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
- pageCount, Utilities.isRtl(v.getResources()));
-
- View newIcon = null;
- switch (newIconIndex) {
- case FocusLogic.NEXT_PAGE_FIRST_ITEM:
- parent = getCellLayoutChildrenForIndex(workspace, pageIndex + 1);
- newIcon = parent.getChildAt(0);
- // TODO(hyunyoungs): handle cases where the child is not an icon but
- // a folder or a widget.
- workspace.snapToPage(pageIndex + 1);
- break;
- case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
- parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
- newIcon = parent.getChildAt(0);
- // TODO(hyunyoungs): handle cases where the child is not an icon but
- // a folder or a widget.
- workspace.snapToPage(pageIndex - 1);
- break;
- case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
- parent = getCellLayoutChildrenForIndex(workspace, pageIndex - 1);
- newIcon = parent.getChildAt(parent.getChildCount() - 1);
- // TODO(hyunyoungs): handle cases where the child is not an icon but
- // a folder or a widget.
- workspace.snapToPage(pageIndex - 1);
- break;
- case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
- case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
- // Go to the previous page but keep the focus on the same hotseat icon.
- workspace.snapToPage(pageIndex - 1);
- break;
- case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
- case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
- // Go to the next page but keep the focus on the same hotseat icon.
- workspace.snapToPage(pageIndex + 1);
- break;
- }
- if (parent == iconParent && newIconIndex >= iconParent.getChildCount()) {
- newIconIndex -= iconParent.getChildCount();
- }
- if (parent != null) {
- if (newIcon == null && newIconIndex >= 0) {
- newIcon = parent.getChildAt(newIconIndex);
- }
- if (newIcon != null) {
- newIcon.requestFocus();
- playSoundEffect(keyCode, v);
- }
- }
- return consume;
- }
-
- /**
- * Handles key events in a workspace containing icons.
- */
- static boolean handleIconKeyEvent(View v, int keyCode, KeyEvent e) {
- boolean consume = FocusLogic.shouldConsume(keyCode);
- if (e.getAction() == KeyEvent.ACTION_UP || !consume) {
- return consume;
- }
-
- Launcher launcher = Launcher.getLauncher(v.getContext());
- DeviceProfile profile = launcher.getDeviceProfile();
-
- if (DEBUG) {
- Log.v(TAG, String.format("Handle WORKSPACE ICONS keyevent=[%s] isVerticalBar=%s",
- KeyEvent.keyCodeToString(keyCode), profile.isVerticalBarLayout()));
- }
-
- // Initialize the variables.
- ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) v.getParent();
- CellLayout iconLayout = (CellLayout) parent.getParent();
- final Workspace workspace = (Workspace) iconLayout.getParent();
- final ViewGroup dragLayer = (ViewGroup) workspace.getParent();
- final ViewGroup tabs = (ViewGroup) dragLayer.findViewById(R.id.drop_target_bar);
- final Hotseat hotseat = (Hotseat) dragLayer.findViewById(R.id.hotseat);
-
- final ItemInfo itemInfo = (ItemInfo) v.getTag();
- final int iconIndex = parent.indexOfChild(v);
- final int pageIndex = workspace.indexOfChild(iconLayout);
- final int pageCount = workspace.getChildCount();
-
- CellLayout hotseatLayout = (CellLayout) hotseat.getChildAt(0);
- ShortcutAndWidgetContainer hotseatParent = hotseatLayout.getShortcutsAndWidgets();
- int[][] matrix;
-
- // KEYCODE_DPAD_DOWN in portrait (KEYCODE_DPAD_RIGHT in landscape) is the only key allowed
- // to take a user to the hotseat. For other dpad navigation, do not use the matrix extended
- // with the hotseat.
- if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN && !profile.isVerticalBarLayout()) {
- matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
- } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT &&
- profile.isVerticalBarLayout()) {
- matrix = FocusLogic.createSparseMatrixWithHotseat(iconLayout, hotseatLayout, profile);
- } else {
- matrix = FocusLogic.createSparseMatrix(iconLayout);
- }
-
- // Process the focus.
- int newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, iconIndex, pageIndex,
- pageCount, Utilities.isRtl(v.getResources()));
- boolean isRtl = Utilities.isRtl(v.getResources());
- View newIcon = null;
- CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex);
- switch (newIconIndex) {
- case FocusLogic.NOOP:
- if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
- newIcon = tabs;
- }
- break;
- case FocusLogic.PREVIOUS_PAGE_RIGHT_COLUMN:
- case FocusLogic.NEXT_PAGE_RIGHT_COLUMN:
- int newPageIndex = pageIndex - 1;
- if (newIconIndex == FocusLogic.NEXT_PAGE_RIGHT_COLUMN) {
- newPageIndex = pageIndex + 1;
- }
- int row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
- parent = getCellLayoutChildrenForIndex(workspace, newPageIndex);
- if (parent != null) {
- iconLayout = (CellLayout) parent.getParent();
- matrix = FocusLogic.createSparseMatrixWithPivotColumn(iconLayout,
- iconLayout.getCountX(), row);
- newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, FocusLogic.PIVOT,
- newPageIndex, pageCount, Utilities.isRtl(v.getResources()));
- if (newIconIndex == FocusLogic.NEXT_PAGE_FIRST_ITEM) {
- newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex,
- isRtl);
- } else if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LAST_ITEM) {
- newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex,
- isRtl);
- } else {
- newIcon = parent.getChildAt(newIconIndex);
- }
- }
- break;
- case FocusLogic.PREVIOUS_PAGE_FIRST_ITEM:
- workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex - 1);
- newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
- if (newIcon == null) {
- // Check the hotseat if no focusable item was found on the workspace.
- newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
- workspace.snapToPage(pageIndex - 1);
- }
- break;
- case FocusLogic.PREVIOUS_PAGE_LAST_ITEM:
- newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex, isRtl);
- break;
- case FocusLogic.NEXT_PAGE_FIRST_ITEM:
- newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex, isRtl);
- break;
- case FocusLogic.NEXT_PAGE_LEFT_COLUMN:
- case FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN:
- newPageIndex = pageIndex + 1;
- if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LEFT_COLUMN) {
- newPageIndex = pageIndex - 1;
- }
- row = ((CellLayout.LayoutParams) v.getLayoutParams()).cellY;
- parent = getCellLayoutChildrenForIndex(workspace, newPageIndex);
- if (parent != null) {
- iconLayout = (CellLayout) parent.getParent();
- matrix = FocusLogic.createSparseMatrixWithPivotColumn(iconLayout, -1, row);
- newIconIndex = FocusLogic.handleKeyEvent(keyCode, matrix, FocusLogic.PIVOT,
- newPageIndex, pageCount, Utilities.isRtl(v.getResources()));
- if (newIconIndex == FocusLogic.NEXT_PAGE_FIRST_ITEM) {
- newIcon = handleNextPageFirstItem(workspace, hotseatLayout, pageIndex,
- isRtl);
- } else if (newIconIndex == FocusLogic.PREVIOUS_PAGE_LAST_ITEM) {
- newIcon = handlePreviousPageLastItem(workspace, hotseatLayout, pageIndex,
- isRtl);
- } else {
- newIcon = parent.getChildAt(newIconIndex);
- }
- }
- break;
- case FocusLogic.CURRENT_PAGE_FIRST_ITEM:
- newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
- if (newIcon == null) {
- // Check the hotseat if no focusable item was found on the workspace.
- newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
- }
- break;
- case FocusLogic.CURRENT_PAGE_LAST_ITEM:
- newIcon = getFirstFocusableIconInReverseReadingOrder(workspaceLayout, isRtl);
- if (newIcon == null) {
- // Check the hotseat if no focusable item was found on the workspace.
- newIcon = getFirstFocusableIconInReverseReadingOrder(hotseatLayout, isRtl);
- }
- break;
- default:
- // current page, some item.
- if (0 <= newIconIndex && newIconIndex < parent.getChildCount()) {
- newIcon = parent.getChildAt(newIconIndex);
- } else if (parent.getChildCount() <= newIconIndex &&
- newIconIndex < parent.getChildCount() + hotseatParent.getChildCount()) {
- newIcon = hotseatParent.getChildAt(newIconIndex - parent.getChildCount());
- }
- break;
- }
- if (newIcon != null) {
- newIcon.requestFocus();
- playSoundEffect(keyCode, v);
- }
- return consume;
- }
-
- //
- // Helper methods.
- //
-
- /**
- * Private helper method to get the CellLayoutChildren given a CellLayout index.
- */
- @Thunk static ShortcutAndWidgetContainer getCellLayoutChildrenForIndex(
- ViewGroup container, int i) {
- CellLayout parent = (CellLayout) container.getChildAt(i);
- return parent.getShortcutsAndWidgets();
- }
-
- /**
- * Helper method to be used for playing sound effects.
- */
- @Thunk static void playSoundEffect(int keyCode, View v) {
- switch (keyCode) {
- case KeyEvent.KEYCODE_DPAD_LEFT:
- v.playSoundEffect(SoundEffectConstants.NAVIGATION_LEFT);
- break;
- case KeyEvent.KEYCODE_DPAD_RIGHT:
- v.playSoundEffect(SoundEffectConstants.NAVIGATION_RIGHT);
- break;
- case KeyEvent.KEYCODE_DPAD_DOWN:
- case KeyEvent.KEYCODE_PAGE_DOWN:
- case KeyEvent.KEYCODE_MOVE_END:
- v.playSoundEffect(SoundEffectConstants.NAVIGATION_DOWN);
- break;
- case KeyEvent.KEYCODE_DPAD_UP:
- case KeyEvent.KEYCODE_PAGE_UP:
- case KeyEvent.KEYCODE_MOVE_HOME:
- v.playSoundEffect(SoundEffectConstants.NAVIGATION_UP);
- break;
- default:
- break;
- }
- }
-
- private static View handlePreviousPageLastItem(Workspace workspace, CellLayout hotseatLayout,
- int pageIndex, boolean isRtl) {
- if (pageIndex - 1 < 0) {
- return null;
- }
- CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex - 1);
- View newIcon = getFirstFocusableIconInReverseReadingOrder(workspaceLayout, isRtl);
- if (newIcon == null) {
- // Check the hotseat if no focusable item was found on the workspace.
- newIcon = getFirstFocusableIconInReverseReadingOrder(hotseatLayout,isRtl);
- workspace.snapToPage(pageIndex - 1);
- }
- return newIcon;
- }
-
- private static View handleNextPageFirstItem(Workspace workspace, CellLayout hotseatLayout,
- int pageIndex, boolean isRtl) {
- if (pageIndex + 1 >= workspace.getPageCount()) {
- return null;
- }
- CellLayout workspaceLayout = (CellLayout) workspace.getChildAt(pageIndex + 1);
- View newIcon = getFirstFocusableIconInReadingOrder(workspaceLayout, isRtl);
- if (newIcon == null) {
- // Check the hotseat if no focusable item was found on the workspace.
- newIcon = getFirstFocusableIconInReadingOrder(hotseatLayout, isRtl);
- workspace.snapToPage(pageIndex + 1);
- }
- return newIcon;
- }
-
- private static View getFirstFocusableIconInReadingOrder(CellLayout cellLayout, boolean isRtl) {
- View icon;
- int countX = cellLayout.getCountX();
- for (int y = 0; y < cellLayout.getCountY(); y++) {
- int increment = isRtl ? -1 : 1;
- for (int x = isRtl ? countX - 1 : 0; 0 <= x && x < countX; x += increment) {
- if ((icon = cellLayout.getChildAt(x, y)) != null && icon.isFocusable()) {
- return icon;
- }
- }
- }
- return null;
- }
-
- private static View getFirstFocusableIconInReverseReadingOrder(CellLayout cellLayout,
- boolean isRtl) {
- View icon;
- int countX = cellLayout.getCountX();
- for (int y = cellLayout.getCountY() - 1; y >= 0; y--) {
- int increment = isRtl ? 1 : -1;
- for (int x = isRtl ? 0 : countX - 1; 0 <= x && x < countX; x += increment) {
- if ((icon = cellLayout.getChildAt(x, y)) != null && icon.isFocusable()) {
- return icon;
- }
- }
- }
- return null;
- }
-}
diff --git a/src/com/android/launcher3/util/FocusLogic.java b/src/com/android/launcher3/util/FocusLogic.java
deleted file mode 100644
index 4f4cccd..0000000
--- a/src/com/android/launcher3/util/FocusLogic.java
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * Copyright (C) 2015 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.launcher3.util;
-
-import android.util.Log;
-import android.view.KeyEvent;
-import android.view.View;
-import android.view.ViewGroup;
-
-import com.android.launcher3.CellLayout;
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.ShortcutAndWidgetContainer;
-import com.android.launcher3.config.FeatureFlags;
-
-import java.util.Arrays;
-
-/**
- * Calculates the next item that a {@link KeyEvent} should change the focus to.
- *<p>
- * Note, this utility class calculates everything regards to icon index and its (x,y) coordinates.
- * Currently supports:
- * <ul>
- * <li> full matrix of cells that are 1x1
- * <li> sparse matrix of cells that are 1x1
- * [ 1][ ][ 2][ ]
- * [ ][ ][ 3][ ]
- * [ ][ 4][ ][ ]
- * [ ][ 5][ 6][ 7]
- * </ul>
- * *<p>
- * For testing, one can use a BT keyboard, or use following adb command.
- * ex. $ adb shell input keyevent 20 // KEYCODE_DPAD_LEFT
- */
-public class FocusLogic {
-
- private static final String TAG = "FocusLogic";
- private static final boolean DEBUG = false;
-
- /** Item and page index related constant used by {@link #handleKeyEvent}. */
- public static final int NOOP = -1;
-
- public static final int PREVIOUS_PAGE_RIGHT_COLUMN = -2;
- public static final int PREVIOUS_PAGE_FIRST_ITEM = -3;
- public static final int PREVIOUS_PAGE_LAST_ITEM = -4;
- public static final int PREVIOUS_PAGE_LEFT_COLUMN = -5;
-
- public static final int CURRENT_PAGE_FIRST_ITEM = -6;
- public static final int CURRENT_PAGE_LAST_ITEM = -7;
-
- public static final int NEXT_PAGE_FIRST_ITEM = -8;
- public static final int NEXT_PAGE_LEFT_COLUMN = -9;
- public static final int NEXT_PAGE_RIGHT_COLUMN = -10;
-
- public static final int ALL_APPS_COLUMN = -11;
-
- // Matrix related constant.
- public static final int EMPTY = -1;
- public static final int PIVOT = 100;
-
- /**
- * Returns true only if this utility class handles the key code.
- */
- public static boolean shouldConsume(int keyCode) {
- return (keyCode == KeyEvent.KEYCODE_DPAD_LEFT || keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ||
- keyCode == KeyEvent.KEYCODE_DPAD_UP || keyCode == KeyEvent.KEYCODE_DPAD_DOWN ||
- keyCode == KeyEvent.KEYCODE_MOVE_HOME || keyCode == KeyEvent.KEYCODE_MOVE_END ||
- keyCode == KeyEvent.KEYCODE_PAGE_UP || keyCode == KeyEvent.KEYCODE_PAGE_DOWN);
- }
-
- public static int handleKeyEvent(int keyCode, int [][] map, int iconIdx, int pageIndex,
- int pageCount, boolean isRtl) {
-
- int cntX = map == null ? -1 : map.length;
- int cntY = map == null ? -1 : map[0].length;
-
- if (DEBUG) {
- Log.v(TAG, String.format(
- "handleKeyEvent START: cntX=%d, cntY=%d, iconIdx=%d, pageIdx=%d, pageCnt=%d",
- cntX, cntY, iconIdx, pageIndex, pageCount));
- }
-
- int newIndex = NOOP;
- switch (keyCode) {
- case KeyEvent.KEYCODE_DPAD_LEFT:
- newIndex = handleDpadHorizontal(iconIdx, cntX, cntY, map, -1 /*increment*/, isRtl);
- if (!isRtl && newIndex == NOOP && pageIndex > 0) {
- newIndex = PREVIOUS_PAGE_RIGHT_COLUMN;
- } else if (isRtl && newIndex == NOOP && pageIndex < pageCount - 1) {
- newIndex = NEXT_PAGE_RIGHT_COLUMN;
- }
- break;
- case KeyEvent.KEYCODE_DPAD_RIGHT:
- newIndex = handleDpadHorizontal(iconIdx, cntX, cntY, map, 1 /*increment*/, isRtl);
- if (!isRtl && newIndex == NOOP && pageIndex < pageCount - 1) {
- newIndex = NEXT_PAGE_LEFT_COLUMN;
- } else if (isRtl && newIndex == NOOP && pageIndex > 0) {
- newIndex = PREVIOUS_PAGE_LEFT_COLUMN;
- }
- break;
- case KeyEvent.KEYCODE_DPAD_DOWN:
- newIndex = handleDpadVertical(iconIdx, cntX, cntY, map, 1 /*increment*/);
- break;
- case KeyEvent.KEYCODE_DPAD_UP:
- newIndex = handleDpadVertical(iconIdx, cntX, cntY, map, -1 /*increment*/);
- break;
- case KeyEvent.KEYCODE_MOVE_HOME:
- newIndex = handleMoveHome();
- break;
- case KeyEvent.KEYCODE_MOVE_END:
- newIndex = handleMoveEnd();
- break;
- case KeyEvent.KEYCODE_PAGE_DOWN:
- newIndex = handlePageDown(pageIndex, pageCount);
- break;
- case KeyEvent.KEYCODE_PAGE_UP:
- newIndex = handlePageUp(pageIndex);
- break;
- default:
- break;
- }
-
- if (DEBUG) {
- Log.v(TAG, String.format("handleKeyEvent FINISH: index [%d -> %s]",
- iconIdx, getStringIndex(newIndex)));
- }
- return newIndex;
- }
-
- /**
- * Returns a matrix of size (m x n) that has been initialized with {@link #EMPTY}.
- *
- * @param m number of columns in the matrix
- * @param n number of rows in the matrix
- */
- // TODO: get rid of dynamic matrix creation.
- private static int[][] createFullMatrix(int m, int n) {
- int[][] matrix = new int [m][n];
-
- for (int i=0; i < m;i++) {
- Arrays.fill(matrix[i], EMPTY);
- }
- return matrix;
- }
-
- /**
- * Returns a matrix of size same as the {@link CellLayout} dimension that is initialized with the
- * index of the child view.
- */
- // TODO: get rid of the dynamic matrix creation
- public static int[][] createSparseMatrix(CellLayout layout) {
- ShortcutAndWidgetContainer parent = layout.getShortcutsAndWidgets();
- final int m = layout.getCountX();
- final int n = layout.getCountY();
- final boolean invert = parent.invertLayoutHorizontally();
-
- int[][] matrix = createFullMatrix(m, n);
-
- // Iterate thru the children.
- for (int i = 0; i < parent.getChildCount(); i++ ) {
- View cell = parent.getChildAt(i);
- if (!cell.isFocusable()) {
- continue;
- }
- int cx = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellX;
- int cy = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellY;
- int x = invert ? (m - cx - 1) : cx;
- if (x < m && cy < n) { // check if view fits into matrix, else skip
- matrix[x][cy] = i;
- }
- }
- if (DEBUG) {
- printMatrix(matrix);
- }
- return matrix;
- }
-
- /**
- * Creates a sparse matrix that merges the icon and hotseat view group using the cell layout.
- * The size of the returning matrix is [icon column count x (icon + hotseat row count)]
- * in portrait orientation. In landscape, [(icon + hotseat) column count x (icon row count)]
- */
- // TODO: get rid of the dynamic matrix creation
- public static int[][] createSparseMatrixWithHotseat(
- CellLayout iconLayout, CellLayout hotseatLayout, DeviceProfile dp) {
-
- ViewGroup iconParent = iconLayout.getShortcutsAndWidgets();
- ViewGroup hotseatParent = hotseatLayout.getShortcutsAndWidgets();
-
- boolean isHotseatHorizontal = !dp.isVerticalBarLayout();
-
- int m, n;
- if (isHotseatHorizontal) {
- m = hotseatLayout.getCountX();
- n = iconLayout.getCountY() + hotseatLayout.getCountY();
- } else {
- m = iconLayout.getCountX() + hotseatLayout.getCountX();
- n = hotseatLayout.getCountY();
- }
- int[][] matrix = createFullMatrix(m, n);
- // Iterate through the children of the workspace.
- for (int i = 0; i < iconParent.getChildCount(); i++) {
- View cell = iconParent.getChildAt(i);
- if (!cell.isFocusable()) {
- continue;
- }
- int cx = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellX;
- int cy = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellY;
- matrix[cx][cy] = i;
- }
-
- // Iterate thru the children of the hotseat.
- for (int i = hotseatParent.getChildCount() - 1; i >= 0; i--) {
- if (isHotseatHorizontal) {
- int cx = ((CellLayout.LayoutParams)
- hotseatParent.getChildAt(i).getLayoutParams()).cellX;
- matrix[cx][iconLayout.getCountY()] = iconParent.getChildCount() + i;
- } else {
- int cy = ((CellLayout.LayoutParams)
- hotseatParent.getChildAt(i).getLayoutParams()).cellY;
- matrix[iconLayout.getCountX()][cy] = iconParent.getChildCount() + i;
- }
- }
- if (DEBUG) {
- printMatrix(matrix);
- }
- return matrix;
- }
-
- /**
- * Creates a sparse matrix that merges the icon of previous/next page and last column of
- * current page. When left key is triggered on the leftmost column, sparse matrix is created
- * that combines previous page matrix and an extra column on the right. Likewise, when right
- * key is triggered on the rightmost column, sparse matrix is created that combines this column
- * on the 0th column and the next page matrix.
- *
- * @param pivotX x coordinate of the focused item in the current page
- * @param pivotY y coordinate of the focused item in the current page
- */
- // TODO: get rid of the dynamic matrix creation
- public static int[][] createSparseMatrixWithPivotColumn(CellLayout iconLayout,
- int pivotX, int pivotY) {
-
- ViewGroup iconParent = iconLayout.getShortcutsAndWidgets();
-
- int[][] matrix = createFullMatrix(iconLayout.getCountX() + 1, iconLayout.getCountY());
-
- // Iterate thru the children of the top parent.
- for (int i = 0; i < iconParent.getChildCount(); i++) {
- View cell = iconParent.getChildAt(i);
- if (!cell.isFocusable()) {
- continue;
- }
- int cx = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellX;
- int cy = ((CellLayout.LayoutParams) cell.getLayoutParams()).cellY;
- if (pivotX < 0) {
- matrix[cx - pivotX][cy] = i;
- } else {
- matrix[cx][cy] = i;
- }
- }
-
- if (pivotX < 0) {
- matrix[0][pivotY] = PIVOT;
- } else {
- matrix[pivotX][pivotY] = PIVOT;
- }
- if (DEBUG) {
- printMatrix(matrix);
- }
- return matrix;
- }
-
- //
- // key event handling methods.
- //
-
- /**
- * Calculates icon that has is closest to the horizontal axis in reference to the cur icon.
- *
- * Example of the check order for KEYCODE_DPAD_RIGHT:
- * [ ][ ][13][14][15]
- * [ ][ 6][ 8][10][12]
- * [ X][ 1][ 2][ 3][ 4]
- * [ ][ 5][ 7][ 9][11]
- */
- // TODO: add unit tests to verify all permutation.
- private static int handleDpadHorizontal(int iconIdx, int cntX, int cntY,
- int[][] matrix, int increment, boolean isRtl) {
- if(matrix == null) {
- throw new IllegalStateException("Dpad navigation requires a matrix.");
- }
- int newIconIndex = NOOP;
-
- int xPos = -1;
- int yPos = -1;
- // Figure out the location of the icon.
- for (int i = 0; i < cntX; i++) {
- for (int j = 0; j < cntY; j++) {
- if (matrix[i][j] == iconIdx) {
- xPos = i;
- yPos = j;
- }
- }
- }
- if (DEBUG) {
- Log.v(TAG, String.format("\thandleDpadHorizontal: \t[x, y]=[%d, %d] iconIndex=%d",
- xPos, yPos, iconIdx));
- }
-
- // Rule1: check first in the horizontal direction
- for (int x = xPos + increment; 0 <= x && x < cntX; x += increment) {
- if ((newIconIndex = inspectMatrix(x, yPos, cntX, cntY, matrix)) != NOOP
- && newIconIndex != ALL_APPS_COLUMN) {
- return newIconIndex;
- }
- }
-
- // Rule2: check (x1-n, yPos + increment), (x1-n, yPos - increment)
- // (x2-n, yPos + 2*increment), (x2-n, yPos - 2*increment)
- int nextYPos1;
- int nextYPos2;
- boolean haveCrossedAllAppsColumn1 = false;
- boolean haveCrossedAllAppsColumn2 = false;
- int x = -1;
- for (int coeff = 1; coeff < cntY; coeff++) {
- nextYPos1 = yPos + coeff * increment;
- nextYPos2 = yPos - coeff * increment;
- x = xPos + increment * coeff;
- if (inspectMatrix(x, nextYPos1, cntX, cntY, matrix) == ALL_APPS_COLUMN) {
- haveCrossedAllAppsColumn1 = true;
- }
- if (inspectMatrix(x, nextYPos2, cntX, cntY, matrix) == ALL_APPS_COLUMN) {
- haveCrossedAllAppsColumn2 = true;
- }
- for (; 0 <= x && x < cntX; x += increment) {
- int offset1 = haveCrossedAllAppsColumn1 && x < cntX - 1 ? increment : 0;
- newIconIndex = inspectMatrix(x, nextYPos1 + offset1, cntX, cntY, matrix);
- if (newIconIndex != NOOP) {
- return newIconIndex;
- }
- int offset2 = haveCrossedAllAppsColumn2 && x < cntX - 1 ? -increment : 0;
- newIconIndex = inspectMatrix(x, nextYPos2 + offset2, cntX, cntY, matrix);
- if (newIconIndex != NOOP) {
- return newIconIndex;
- }
- }
- }
-
- // Rule3: if switching between pages, do a brute-force search to find an item that was
- // missed by rules 1 and 2 (such as when going from a bottom right icon to top left)
- if (iconIdx == PIVOT) {
- if (isRtl) {
- return increment < 0 ? NEXT_PAGE_FIRST_ITEM : PREVIOUS_PAGE_LAST_ITEM;
- }
- return increment < 0 ? PREVIOUS_PAGE_LAST_ITEM : NEXT_PAGE_FIRST_ITEM;
- }
- return newIconIndex;
- }
-
- /**
- * Calculates icon that is closest to the vertical axis in reference to the current icon.
- *
- * Example of the check order for KEYCODE_DPAD_DOWN:
- * [ ][ ][ ][ X][ ][ ][ ]
- * [ ][ ][ 5][ 1][ 4][ ][ ]
- * [ ][10][ 7][ 2][ 6][ 9][ ]
- * [14][12][ 9][ 3][ 8][11][13]
- */
- // TODO: add unit tests to verify all permutation.
- private static int handleDpadVertical(int iconIndex, int cntX, int cntY,
- int [][] matrix, int increment) {
- int newIconIndex = NOOP;
- if(matrix == null) {
- throw new IllegalStateException("Dpad navigation requires a matrix.");
- }
-
- int xPos = -1;
- int yPos = -1;
- // Figure out the location of the icon.
- for (int i = 0; i< cntX; i++) {
- for (int j = 0; j < cntY; j++) {
- if (matrix[i][j] == iconIndex) {
- xPos = i;
- yPos = j;
- }
- }
- }
-
- if (DEBUG) {
- Log.v(TAG, String.format("\thandleDpadVertical: \t[x, y]=[%d, %d] iconIndex=%d",
- xPos, yPos, iconIndex));
- }
-
- // Rule1: check first in the dpad direction
- for (int y = yPos + increment; 0 <= y && y <cntY && 0 <= y; y += increment) {
- if ((newIconIndex = inspectMatrix(xPos, y, cntX, cntY, matrix)) != NOOP
- && newIconIndex != ALL_APPS_COLUMN) {
- return newIconIndex;
- }
- }
-
- // Rule2: check (xPos + increment, y_(1-n)), (xPos - increment, y_(1-n))
- // (xPos + 2*increment, y_(2-n))), (xPos - 2*increment, y_(2-n))
- int nextXPos1;
- int nextXPos2;
- boolean haveCrossedAllAppsColumn1 = false;
- boolean haveCrossedAllAppsColumn2 = false;
- int y = -1;
- for (int coeff = 1; coeff < cntX; coeff++) {
- nextXPos1 = xPos + coeff * increment;
- nextXPos2 = xPos - coeff * increment;
- y = yPos + increment * coeff;
- if (inspectMatrix(nextXPos1, y, cntX, cntY, matrix) == ALL_APPS_COLUMN) {
- haveCrossedAllAppsColumn1 = true;
- }
- if (inspectMatrix(nextXPos2, y, cntX, cntY, matrix) == ALL_APPS_COLUMN) {
- haveCrossedAllAppsColumn2 = true;
- }
- for (; 0 <= y && y < cntY; y = y + increment) {
- int offset1 = haveCrossedAllAppsColumn1 && y < cntY - 1 ? increment : 0;
- newIconIndex = inspectMatrix(nextXPos1 + offset1, y, cntX, cntY, matrix);
- if (newIconIndex != NOOP) {
- return newIconIndex;
- }
- int offset2 = haveCrossedAllAppsColumn2 && y < cntY - 1 ? -increment : 0;
- newIconIndex = inspectMatrix(nextXPos2 + offset2, y, cntX, cntY, matrix);
- if (newIconIndex != NOOP) {
- return newIconIndex;
- }
- }
- }
- return newIconIndex;
- }
-
- private static int handleMoveHome() {
- return CURRENT_PAGE_FIRST_ITEM;
- }
-
- private static int handleMoveEnd() {
- return CURRENT_PAGE_LAST_ITEM;
- }
-
- private static int handlePageDown(int pageIndex, int pageCount) {
- if (pageIndex < pageCount -1) {
- return NEXT_PAGE_FIRST_ITEM;
- }
- return CURRENT_PAGE_LAST_ITEM;
- }
-
- private static int handlePageUp(int pageIndex) {
- if (pageIndex > 0) {
- return PREVIOUS_PAGE_FIRST_ITEM;
- } else {
- return CURRENT_PAGE_FIRST_ITEM;
- }
- }
-
- //
- // Helper methods.
- //
-
- private static boolean isValid(int xPos, int yPos, int countX, int countY) {
- return (0 <= xPos && xPos < countX && 0 <= yPos && yPos < countY);
- }
-
- private static int inspectMatrix(int x, int y, int cntX, int cntY, int[][] matrix) {
- int newIconIndex = NOOP;
- if (isValid(x, y, cntX, cntY)) {
- if (matrix[x][y] != -1) {
- newIconIndex = matrix[x][y];
- if (DEBUG) {
- Log.v(TAG, String.format("\t\tinspect: \t[x, y]=[%d, %d] %d",
- x, y, matrix[x][y]));
- }
- return newIconIndex;
- }
- }
- return newIconIndex;
- }
-
- /**
- * Only used for debugging.
- */
- private static String getStringIndex(int index) {
- switch(index) {
- case NOOP: return "NOOP";
- case PREVIOUS_PAGE_FIRST_ITEM: return "PREVIOUS_PAGE_FIRST";
- case PREVIOUS_PAGE_LAST_ITEM: return "PREVIOUS_PAGE_LAST";
- case PREVIOUS_PAGE_RIGHT_COLUMN:return "PREVIOUS_PAGE_RIGHT_COLUMN";
- case CURRENT_PAGE_FIRST_ITEM: return "CURRENT_PAGE_FIRST";
- case CURRENT_PAGE_LAST_ITEM: return "CURRENT_PAGE_LAST";
- case NEXT_PAGE_FIRST_ITEM: return "NEXT_PAGE_FIRST";
- case NEXT_PAGE_LEFT_COLUMN: return "NEXT_PAGE_LEFT_COLUMN";
- case ALL_APPS_COLUMN: return "ALL_APPS_COLUMN";
- default:
- return Integer.toString(index);
- }
- }
-
- /**
- * Only used for debugging.
- */
- private static void printMatrix(int[][] matrix) {
- Log.v(TAG, "\tprintMap:");
- int m = matrix.length;
- int n = matrix[0].length;
-
- for (int j=0; j < n; j++) {
- String colY = "\t\t";
- for (int i=0; i < m; i++) {
- colY += String.format("%3d",matrix[i][j]);
- }
- Log.v(TAG, colY);
- }
- }
-
- /**
- * @param edgeColumn the column of the new icon. either {@link #NEXT_PAGE_LEFT_COLUMN} or
- * {@link #NEXT_PAGE_RIGHT_COLUMN}
- * @return the view adjacent to {@param oldView} in the {@param nextPage} of the folder.
- */
- public static View getAdjacentChildInNextFolderPage(
- ShortcutAndWidgetContainer nextPage, View oldView, int edgeColumn) {
- final int newRow = ((CellLayout.LayoutParams) oldView.getLayoutParams()).cellY;
-
- int column = (edgeColumn == NEXT_PAGE_LEFT_COLUMN) ^ nextPage.invertLayoutHorizontally()
- ? 0 : (((CellLayout) nextPage.getParent()).getCountX() - 1);
-
- for (; column >= 0; column--) {
- for (int row = newRow; row >= 0; row--) {
- View newView = nextPage.getChildAt(column, row);
- if (newView != null) {
- return newView;
- }
- }
- }
- return null;
- }
-}