| package com.android.launcher3; |
| |
| import android.annotation.TargetApi; |
| import android.graphics.Rect; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.View; |
| import android.view.View.AccessibilityDelegate; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; |
| |
| import com.android.launcher3.util.Thunk; |
| |
| import java.util.ArrayList; |
| |
| @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| public class LauncherAccessibilityDelegate extends AccessibilityDelegate { |
| |
| private static final String TAG = "LauncherAccessibilityDelegate"; |
| |
| private static final int REMOVE = R.id.action_remove; |
| private static final int INFO = R.id.action_info; |
| private static final int UNINSTALL = R.id.action_uninstall; |
| private static final int ADD_TO_WORKSPACE = R.id.action_add_to_workspace; |
| private static final int MOVE = R.id.action_move; |
| |
| public enum DragType { |
| ICON, |
| FOLDER, |
| WIDGET |
| } |
| |
| public static class DragInfo { |
| public DragType dragType; |
| public ItemInfo info; |
| public View item; |
| } |
| |
| private final SparseArray<AccessibilityAction> mActions = new SparseArray<>(); |
| @Thunk final Launcher mLauncher; |
| |
| private DragInfo mDragInfo = null; |
| private AccessibilityDragSource mDragSource = null; |
| |
| public LauncherAccessibilityDelegate(Launcher launcher) { |
| mLauncher = launcher; |
| |
| mActions.put(REMOVE, new AccessibilityAction(REMOVE, |
| launcher.getText(R.string.delete_target_label))); |
| mActions.put(INFO, new AccessibilityAction(INFO, |
| launcher.getText(R.string.info_target_label))); |
| mActions.put(UNINSTALL, new AccessibilityAction(UNINSTALL, |
| launcher.getText(R.string.delete_target_uninstall_label))); |
| mActions.put(ADD_TO_WORKSPACE, new AccessibilityAction(ADD_TO_WORKSPACE, |
| launcher.getText(R.string.action_add_to_workspace))); |
| mActions.put(MOVE, new AccessibilityAction(MOVE, |
| launcher.getText(R.string.action_move))); |
| } |
| |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| if (!(host.getTag() instanceof ItemInfo)) return; |
| ItemInfo item = (ItemInfo) host.getTag(); |
| |
| if (DeleteDropTarget.supportsDrop(item)) { |
| info.addAction(mActions.get(REMOVE)); |
| } |
| if (UninstallDropTarget.supportsDrop(host.getContext(), item)) { |
| info.addAction(mActions.get(UNINSTALL)); |
| } |
| if (InfoDropTarget.supportsDrop(host.getContext(), item)) { |
| info.addAction(mActions.get(INFO)); |
| } |
| |
| if ((item instanceof ShortcutInfo) |
| || (item instanceof LauncherAppWidgetInfo) |
| || (item instanceof FolderInfo)) { |
| info.addAction(mActions.get(MOVE)); |
| } if ((item instanceof AppInfo) || (item instanceof PendingAddItemInfo)) { |
| info.addAction(mActions.get(ADD_TO_WORKSPACE)); |
| } |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(View host, int action, Bundle args) { |
| if ((host.getTag() instanceof ItemInfo) |
| && performAction(host, (ItemInfo) host.getTag(), action)) { |
| return true; |
| } |
| return super.performAccessibilityAction(host, action, args); |
| } |
| |
| public boolean performAction(View host, final ItemInfo item, int action) { |
| if (action == REMOVE) { |
| if (DeleteDropTarget.removeWorkspaceOrFolderItem(mLauncher, item, host)) { |
| announceConfirmation(R.string.item_removed); |
| return true; |
| } |
| return false; |
| } else if (action == INFO) { |
| InfoDropTarget.startDetailsActivityForInfo(item, mLauncher); |
| return true; |
| } else if (action == UNINSTALL) { |
| return UninstallDropTarget.startUninstallActivity(mLauncher, item); |
| } else if (action == MOVE) { |
| beginAccessibleDrag(host, item); |
| } else if (action == ADD_TO_WORKSPACE) { |
| final int[] coordinates = new int[2]; |
| final long screenId = findSpaceOnWorkspace(item, coordinates); |
| mLauncher.showWorkspace(true, new Runnable() { |
| |
| @Override |
| public void run() { |
| if (item instanceof AppInfo) { |
| ShortcutInfo info = ((AppInfo) item).makeShortcut(); |
| LauncherModel.addItemToDatabase(mLauncher, info, |
| LauncherSettings.Favorites.CONTAINER_DESKTOP, |
| screenId, coordinates[0], coordinates[1]); |
| |
| ArrayList<ItemInfo> itemList = new ArrayList<>(); |
| itemList.add(info); |
| mLauncher.bindItems(itemList, 0, itemList.size(), true); |
| } else if (item instanceof PendingAddItemInfo) { |
| PendingAddItemInfo info = (PendingAddItemInfo) item; |
| Workspace workspace = mLauncher.getWorkspace(); |
| workspace.snapToPage(workspace.getPageIndexForScreenId(screenId)); |
| mLauncher.addPendingItem(info, LauncherSettings.Favorites.CONTAINER_DESKTOP, |
| screenId, coordinates, info.spanX, info.spanY); |
| } |
| announceConfirmation(R.string.item_added_to_workspace); |
| } |
| }); |
| return true; |
| } |
| return false; |
| } |
| |
| @Thunk void announceConfirmation(int resId) { |
| announceConfirmation(mLauncher.getResources().getString(resId)); |
| } |
| |
| @Thunk void announceConfirmation(String confirmation) { |
| mLauncher.getDragLayer().announceForAccessibility(confirmation); |
| |
| } |
| |
| public boolean isInAccessibleDrag() { |
| return mDragInfo != null; |
| } |
| |
| public DragInfo getDragInfo() { |
| return mDragInfo; |
| } |
| |
| /** |
| * @param clickedTarget the actual view that was clicked |
| * @param dropLocation relative to {@param clickedTarget}. If provided, its center is used |
| * as the actual drop location otherwise the views center is used. |
| */ |
| public void handleAccessibleDrop(View clickedTarget, Rect dropLocation, |
| String confirmation) { |
| if (!isInAccessibleDrag()) return; |
| |
| int[] loc = new int[2]; |
| if (dropLocation == null) { |
| loc[0] = clickedTarget.getWidth() / 2; |
| loc[1] = clickedTarget.getHeight() / 2; |
| } else { |
| loc[0] = dropLocation.centerX(); |
| loc[1] = dropLocation.centerY(); |
| } |
| |
| mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(clickedTarget, loc); |
| mLauncher.getDragController().completeAccessibleDrag(loc); |
| |
| endAccessibleDrag(); |
| if (!TextUtils.isEmpty(confirmation)) { |
| announceConfirmation(confirmation); |
| } |
| } |
| |
| public void beginAccessibleDrag(View item, ItemInfo info) { |
| mDragInfo = new DragInfo(); |
| mDragInfo.info = info; |
| mDragInfo.item = item; |
| mDragInfo.dragType = DragType.ICON; |
| if (info instanceof FolderInfo) { |
| mDragInfo.dragType = DragType.FOLDER; |
| } else if (info instanceof LauncherAppWidgetInfo) { |
| mDragInfo.dragType = DragType.WIDGET; |
| } |
| |
| CellLayout.CellInfo cellInfo = new CellLayout.CellInfo(item, info); |
| |
| Rect pos = new Rect(); |
| mLauncher.getDragLayer().getDescendantRectRelativeToSelf(item, pos); |
| mLauncher.getDragController().prepareAccessibleDrag(pos.centerX(), pos.centerY()); |
| |
| Workspace workspace = mLauncher.getWorkspace(); |
| |
| Folder folder = workspace.getOpenFolder(); |
| if (folder != null) { |
| if (folder.getItemsInReadingOrder().contains(item)) { |
| mDragSource = folder; |
| } else { |
| mLauncher.closeFolder(); |
| } |
| } |
| if (mDragSource == null) { |
| mDragSource = workspace; |
| } |
| mDragSource.enableAccessibleDrag(true); |
| mDragSource.startDrag(cellInfo, true); |
| } |
| |
| public boolean onBackPressed() { |
| if (isInAccessibleDrag()) { |
| cancelAccessibleDrag(); |
| return true; |
| } |
| return false; |
| } |
| |
| private void cancelAccessibleDrag() { |
| mLauncher.getDragController().cancelDrag(); |
| endAccessibleDrag(); |
| } |
| |
| private void endAccessibleDrag() { |
| mDragInfo = null; |
| if (mDragSource != null) { |
| mDragSource.enableAccessibleDrag(false); |
| mDragSource = null; |
| } |
| } |
| |
| public static interface AccessibilityDragSource { |
| void startDrag(CellLayout.CellInfo cellInfo, boolean accessible); |
| |
| void enableAccessibleDrag(boolean enable); |
| } |
| |
| /** |
| * Find empty space on the workspace and returns the screenId. |
| */ |
| private long findSpaceOnWorkspace(ItemInfo info, int[] outCoordinates) { |
| Workspace workspace = mLauncher.getWorkspace(); |
| ArrayList<Long> workspaceScreens = workspace.getScreenOrder(); |
| long screenId; |
| |
| // First check if there is space on the current screen. |
| int screenIndex = workspace.getCurrentPage(); |
| screenId = workspaceScreens.get(screenIndex); |
| CellLayout layout = (CellLayout) workspace.getPageAt(screenIndex); |
| |
| boolean found = layout.findCellForSpan(outCoordinates, info.spanX, info.spanY); |
| screenIndex = workspace.hasCustomContent() ? 1 : 0; |
| while (!found && screenIndex < workspaceScreens.size()) { |
| screenId = workspaceScreens.get(screenIndex); |
| layout = (CellLayout) workspace.getPageAt(screenIndex); |
| found = layout.findCellForSpan(outCoordinates, info.spanX, info.spanY); |
| screenIndex++; |
| } |
| |
| if (found) { |
| return screenId; |
| } |
| |
| workspace.addExtraEmptyScreen(); |
| screenId = workspace.commitExtraEmptyScreen(); |
| layout = workspace.getScreenWithId(screenId); |
| found = layout.findCellForSpan(outCoordinates, info.spanX, info.spanY); |
| |
| if (!found) { |
| Log.wtf(TAG, "Not enough space on an empty screen"); |
| } |
| return screenId; |
| } |
| } |