| package com.android.launcher3.accessibility; |
| |
| import android.annotation.TargetApi; |
| import android.app.AlertDialog; |
| import android.appwidget.AppWidgetProviderInfo; |
| import android.content.DialogInterface; |
| import android.graphics.Rect; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Handler; |
| 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.AppInfo; |
| import com.android.launcher3.AppWidgetResizeFrame; |
| import com.android.launcher3.CellLayout; |
| import com.android.launcher3.DeleteDropTarget; |
| import com.android.launcher3.DragSource; |
| import com.android.launcher3.Folder; |
| import com.android.launcher3.FolderInfo; |
| import com.android.launcher3.InfoDropTarget; |
| import com.android.launcher3.ItemInfo; |
| import com.android.launcher3.Launcher; |
| import com.android.launcher3.LauncherAppWidgetHostView; |
| import com.android.launcher3.LauncherAppWidgetInfo; |
| import com.android.launcher3.LauncherModel; |
| import com.android.launcher3.LauncherSettings; |
| import com.android.launcher3.PendingAddItemInfo; |
| import com.android.launcher3.R; |
| import com.android.launcher3.ShortcutInfo; |
| import com.android.launcher3.UninstallDropTarget; |
| import com.android.launcher3.Workspace; |
| import com.android.launcher3.dragndrop.DragController.DragListener; |
| import com.android.launcher3.util.Thunk; |
| |
| import java.util.ArrayList; |
| |
| @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| public class LauncherAccessibilityDelegate extends AccessibilityDelegate implements DragListener { |
| |
| 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; |
| private static final int MOVE_TO_WORKSPACE = R.id.action_move_to_workspace; |
| private static final int RESIZE = R.id.action_resize; |
| |
| 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))); |
| mActions.put(MOVE_TO_WORKSPACE, new AccessibilityAction(MOVE_TO_WORKSPACE, |
| launcher.getText(R.string.action_move_to_workspace))); |
| mActions.put(RESIZE, new AccessibilityAction(RESIZE, |
| launcher.getText(R.string.action_resize))); |
| } |
| |
| @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.container >= 0) { |
| info.addAction(mActions.get(MOVE_TO_WORKSPACE)); |
| } else if (item instanceof LauncherAppWidgetInfo) { |
| if (!getSupportedResizeActions(host, (LauncherAppWidgetInfo) item).isEmpty()) { |
| info.addAction(mActions.get(RESIZE)); |
| } |
| } |
| } 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(final 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; |
| } else if (action == MOVE_TO_WORKSPACE) { |
| Folder folder = mLauncher.getWorkspace().getOpenFolder(); |
| mLauncher.closeFolder(folder); |
| ShortcutInfo info = (ShortcutInfo) item; |
| folder.getInfo().remove(info); |
| |
| final int[] coordinates = new int[2]; |
| final long screenId = findSpaceOnWorkspace(item, coordinates); |
| LauncherModel.moveItemInDatabase(mLauncher, info, |
| LauncherSettings.Favorites.CONTAINER_DESKTOP, |
| screenId, coordinates[0], coordinates[1]); |
| |
| // Bind the item in next frame so that if a new workspace page was created, |
| // it will get laid out. |
| new Handler().post(new Runnable() { |
| |
| @Override |
| public void run() { |
| ArrayList<ItemInfo> itemList = new ArrayList<>(); |
| itemList.add(item); |
| mLauncher.bindItems(itemList, 0, itemList.size(), true); |
| announceConfirmation(R.string.item_moved); |
| } |
| }); |
| } else if (action == RESIZE) { |
| final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) item; |
| final ArrayList<Integer> actions = getSupportedResizeActions(host, info); |
| CharSequence[] labels = new CharSequence[actions.size()]; |
| for (int i = 0; i < actions.size(); i++) { |
| labels[i] = mLauncher.getText(actions.get(i)); |
| } |
| |
| new AlertDialog.Builder(mLauncher) |
| .setTitle(R.string.action_resize) |
| .setItems(labels, new DialogInterface.OnClickListener() { |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| performResizeAction(actions.get(which), host, info); |
| dialog.dismiss(); |
| } |
| }) |
| .show(); |
| } |
| return false; |
| } |
| |
| private ArrayList<Integer> getSupportedResizeActions(View host, LauncherAppWidgetInfo info) { |
| ArrayList<Integer> actions = new ArrayList<>(); |
| |
| AppWidgetProviderInfo providerInfo = ((LauncherAppWidgetHostView) host).getAppWidgetInfo(); |
| if (providerInfo == null) { |
| return actions; |
| } |
| |
| CellLayout layout = (CellLayout) host.getParent().getParent(); |
| if ((providerInfo.resizeMode & AppWidgetProviderInfo.RESIZE_HORIZONTAL) != 0) { |
| if (layout.isRegionVacant(info.cellX + info.spanX, info.cellY, 1, info.spanY) || |
| layout.isRegionVacant(info.cellX - 1, info.cellY, 1, info.spanY)) { |
| actions.add(R.string.action_increase_width); |
| } |
| |
| if (info.spanX > info.minSpanX && info.spanX > 1) { |
| actions.add(R.string.action_decrease_width); |
| } |
| } |
| |
| if ((providerInfo.resizeMode & AppWidgetProviderInfo.RESIZE_VERTICAL) != 0) { |
| if (layout.isRegionVacant(info.cellX, info.cellY + info.spanY, info.spanX, 1) || |
| layout.isRegionVacant(info.cellX, info.cellY - 1, info.spanX, 1)) { |
| actions.add(R.string.action_increase_height); |
| } |
| |
| if (info.spanY > info.minSpanY && info.spanY > 1) { |
| actions.add(R.string.action_decrease_height); |
| } |
| } |
| return actions; |
| } |
| |
| @Thunk void performResizeAction(int action, View host, LauncherAppWidgetInfo info) { |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) host.getLayoutParams(); |
| CellLayout layout = (CellLayout) host.getParent().getParent(); |
| layout.markCellsAsUnoccupiedForView(host); |
| |
| if (action == R.string.action_increase_width) { |
| if (((host.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL) |
| && layout.isRegionVacant(info.cellX - 1, info.cellY, 1, info.spanY)) |
| || !layout.isRegionVacant(info.cellX + info.spanX, info.cellY, 1, info.spanY)) { |
| lp.cellX --; |
| info.cellX --; |
| } |
| lp.cellHSpan ++; |
| info.spanX ++; |
| } else if (action == R.string.action_decrease_width) { |
| lp.cellHSpan --; |
| info.spanX --; |
| } else if (action == R.string.action_increase_height) { |
| if (!layout.isRegionVacant(info.cellX, info.cellY + info.spanY, info.spanX, 1)) { |
| lp.cellY --; |
| info.cellY --; |
| } |
| lp.cellVSpan ++; |
| info.spanY ++; |
| } else if (action == R.string.action_decrease_height) { |
| lp.cellVSpan --; |
| info.spanY --; |
| } |
| |
| layout.markCellsAsOccupiedForView(host); |
| Rect sizeRange = new Rect(); |
| AppWidgetResizeFrame.getWidgetSizeRanges(mLauncher, info.spanX, info.spanY, sizeRange); |
| ((LauncherAppWidgetHostView) host).updateAppWidgetSize(null, |
| sizeRange.left, sizeRange.top, sizeRange.right, sizeRange.bottom); |
| host.requestLayout(); |
| LauncherModel.updateItemInDatabase(mLauncher, info); |
| announceConfirmation(mLauncher.getString(R.string.widget_resized, info.spanX, info.spanY)); |
| } |
| |
| @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); |
| |
| 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); |
| |
| if (mLauncher.getDragController().isDragging()) { |
| mLauncher.getDragController().addDragListener(this); |
| } |
| } |
| |
| |
| @Override |
| public void onDragStart(DragSource source, ItemInfo info, int dragAction) { |
| // No-op |
| } |
| |
| @Override |
| public void onDragEnd() { |
| mLauncher.getDragController().removeDragListener(this); |
| 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; |
| } |
| } |
