Merge "Add delete key support." into nyc-dev

    private String mQuery = null;

    private Selection mSelection = null;

    private boolean mSearchMode = false;

    private @Nullable ActionMode mActionMode;

    @Override

    public View onCreateView(

            implements MultiSelectManager.Callback, ActionMode.Callback {

        private Selection mSelected = new Selection();

        private ActionMode mActionMode;

        private int mNoCopyCount = 0;

        private int mNoDeleteCount = 0;

        private int mNoRenameCount = -1;

                    return true;

                case R.id.menu_delete:

                    // Pass mode along to the delete function so it can

                    // end action mode when documents are deleted.

                    // deleteDocuments will end action mode if the documents are deleted.

                    // It won't end action mode if user cancels the delete.

                    deleteDocuments(selection, mode);

                    deleteDocuments(selection);

                    return true;

                case R.id.menu_copy_to:

        }.execute(selected);

    }

    private void deleteDocuments(final Selection selected, final ActionMode mode) {

    private void deleteDocuments(final Selection selected) {

        assert(!selected.isEmpty());

        final DocumentInfo srcParent = getDisplayState().stack.peek();

                                // This is done here, rather in the onActionItemClicked

                                // so we can avoid de-selecting items in the case where

                                // the user cancels the delete.

                                mode.finish();

                                if (mActionMode != null) {

                                    mActionMode.finish();

                                }

                                // Hide the files in the UI...since the operation

                                // might be queued up on FileOperationService.

                                // We're walking a line here.

                case KeyEvent.KEYCODE_DPAD_CENTER:

                case KeyEvent.KEYCODE_BUTTON_A:

                    return onActivate(doc);

                case KeyEvent.KEYCODE_FORWARD_DEL:

                    // This has to be handled here instead of in a keyboard shortcut, because

                    // keyboard shortcuts all have to be modified with the 'Ctrl' key.

                    if (mSelectionManager.hasSelection()) {

                        deleteDocuments(mSelectionManager.getSelection());

                    }

                    // Always handle the key, even if there was nothing to delete. This is a

                    // precaution to prevent other handlers from potentially picking up the event

                    // and triggering extra behaviours.

                    return true;

            }

            return false;