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Example 6 with ListButton

use of org.apache.pivot.wtk.ListButton in project pivot by apache.

the class LargeData method startup.

@Override
public void startup(Display display, Map<String, String> properties) throws Exception {
    basePath = properties.get(BASE_PATH_KEY);
    if (basePath == null) {
        throw new IllegalArgumentException(BASE_PATH_KEY + " is required.");
    }
    origin = ApplicationContext.getOrigin();
    if (origin == null) {
        System.out.println("Running as a Standalone Java Application, with user home: \"" + USER_HOME + "\"");
        if (USER_HOME != null) {
            System.out.println("Set as origin the user home");
            origin = (new File(USER_HOME).toURI()).toURL();
        }
    }
    BXMLSerializer bxmlSerializer = new BXMLSerializer();
    window = (Window) bxmlSerializer.readObject(LargeData.class, "large_data.bxml");
    fileListButton = (ListButton) bxmlSerializer.getNamespace().get("fileListButton");
    loadDataButton = (PushButton) bxmlSerializer.getNamespace().get("loadDataButton");
    cancelButton = (PushButton) bxmlSerializer.getNamespace().get("cancelButton");
    clearButton = (PushButton) bxmlSerializer.getNamespace().get("clearButton");
    statusLabel = (Label) bxmlSerializer.getNamespace().get("statusLabel");
    tableView = (TableView) bxmlSerializer.getNamespace().get("tableView");
    fileListButton.getListButtonSelectionListeners().add(new ListButtonSelectionListener() {

        @Override
        public void selectedItemChanged(ListButton listButtonArgument, Object previousSelectedItem) {
            Object selectedItem = listButtonArgument.getSelectedItem();
            System.out.println("Selected: " + selectedItem.toString() + ", now clear table data ...");
            // empty the table
            tableView.getTableData().clear();
        }
    });
    loadDataButton.getButtonPressListeners().add((button) -> {
        loadDataButton.setEnabled(false);
        cancelButton.setEnabled(true);
        loadData();
    });
    cancelButton.getButtonPressListeners().add((button) -> {
        if (loadDataTask != null) {
            loadDataTask.abort();
        }
        loadDataButton.setEnabled(true);
        cancelButton.setEnabled(false);
    });
    clearButton.getButtonPressListeners().add((button) -> {
        if (loadDataTask != null) {
            loadDataTask.abort();
        }
        // empty the table
        tableView.getTableData().clear();
        statusLabel.setText("");
    });
    tableView.getTableViewSortListeners().add(new TableViewSortListener() {

        @Override
        public void sortChanged(TableView tableViewArgument) {
            @SuppressWarnings("unchecked") List<Object> tableData = (List<Object>) tableViewArgument.getTableData();
            long startTime = System.currentTimeMillis();
            tableData.setComparator(new TableViewRowComparator(tableViewArgument));
            long endTime = System.currentTimeMillis();
            statusLabel.setText("Data sorted in " + (endTime - startTime) + " ms.");
        }
    });
    window.open(display);
}
Also used : ListButton(org.apache.pivot.wtk.ListButton) TableViewRowComparator(org.apache.pivot.wtk.content.TableViewRowComparator) ListButtonSelectionListener(org.apache.pivot.wtk.ListButtonSelectionListener) TableViewSortListener(org.apache.pivot.wtk.TableViewSortListener) ArrayList(org.apache.pivot.collections.ArrayList) List(org.apache.pivot.collections.List) File(java.io.File) BXMLSerializer(org.apache.pivot.beans.BXMLSerializer) TableView(org.apache.pivot.wtk.TableView)

Example 7 with ListButton

use of org.apache.pivot.wtk.ListButton in project pivot by apache.

the class SheetSlideDirectionWindow method initialize.

@Override
public void initialize(Map<String, Object> namespace, URL location, Resources resources) {
    // Populate the ListButton with values from the enum
    listButton.setListData(new ArrayList<>(SheetPlacement.values()));
    listButton = null;
    // Populate the form with data from the Sheet's styles
    form.load(sheet.getStyles());
    // Common ButtonPressListener to be applied to all four of
    // the PushButtons representing a slide direction
    ButtonPressListener openSheetButtonPressListener = new ButtonPressListener() {

        @Override
        public void buttonPressed(Button button) {
            StyleDictionary sheetStyles = sheet.getStyles();
            form.store(sheetStyles);
            button.store(sheetStyles);
            form.load(sheetStyles);
            sheet.load(sheetStyles);
            sheet.open(button.getWindow());
        }
    };
    // Apply the common ButtonPressListener to the PushButtons
    for (Iterator<Component> it = tablePane.iterator(); it.hasNext(); ) {
        Component component = it.next();
        if (component instanceof PushButton) {
            PushButton button = (PushButton) component;
            button.getButtonPressListeners().add(openSheetButtonPressListener);
            button.setTooltipText("Press me!");
        }
    }
    tablePane = null;
    // Mouse handler to enable users to quickly close the sheet
    final ContainerMouseListener displayMouseHandler = new ContainerMouseListener() {

        @Override
        public boolean mouseDown(Container container, Mouse.Button button, int x, int y) {
            Display display = (Display) container;
            Component component = display.getComponentAt(x, y);
            // Close the sheet by clicking away from it.
            // This allows resizing etc to work without requiring
            // a close button or similar on the sheet.
            boolean consumed = (component != sheet);
            if (consumed) {
                sheet.close();
            }
            return consumed;
        }
    };
    // Add/remove the mouse handler based on the Sheet's state
    sheet.getWindowStateListeners().add(new WindowStateListener() {

        @Override
        public void windowOpened(Window window) {
            window.getDisplay().getContainerMouseListeners().add(displayMouseHandler);
        }

        @Override
        public void windowClosed(Window window, Display display, Window owner) {
            display.getContainerMouseListeners().remove(displayMouseHandler);
        }
    });
}
Also used : Window(org.apache.pivot.wtk.Window) WindowStateListener(org.apache.pivot.wtk.WindowStateListener) ButtonPressListener(org.apache.pivot.wtk.ButtonPressListener) Container(org.apache.pivot.wtk.Container) PushButton(org.apache.pivot.wtk.PushButton) Button(org.apache.pivot.wtk.Button) ListButton(org.apache.pivot.wtk.ListButton) ContainerMouseListener(org.apache.pivot.wtk.ContainerMouseListener) Component(org.apache.pivot.wtk.Component) PushButton(org.apache.pivot.wtk.PushButton) Display(org.apache.pivot.wtk.Display)

Example 8 with ListButton

use of org.apache.pivot.wtk.ListButton in project pivot by apache.

the class TerraFileBrowserSkin method install.

@Override
public void install(Component component) {
    super.install(component);
    final FileBrowser fileBrowser = (FileBrowser) component;
    BXMLSerializer bxmlSerializer = new BXMLSerializer();
    try {
        content = (Component) bxmlSerializer.readObject(TerraFileBrowserSkin.class, "terra_file_browser_skin.bxml", true);
    } catch (IOException exception) {
        throw new RuntimeException(exception);
    } catch (SerializationException exception) {
        throw new RuntimeException(exception);
    }
    fileBrowser.add(content);
    bxmlSerializer.bind(this, TerraFileBrowserSkin.class);
    driveListButton.getListButtonSelectionListeners().add(new ListButtonSelectionListener() {

        @Override
        public void selectedItemChanged(ListButton listButton, Object previousSelectedItem) {
            if (previousSelectedItem != null) {
                File drive = (File) listButton.getSelectedItem();
                if (drive != null && drive.canRead()) {
                    if (!selectingDriveFromRootDirectory) {
                        fileBrowser.setRootDirectory(drive);
                    }
                } else {
                    refreshRoots = true;
                    listButton.setSelectedItem(previousSelectedItem);
                }
            }
        }
    });
    pathListButton.getListButtonSelectionListeners().add(new ListButtonSelectionListener() {

        @Override
        public void selectedItemChanged(ListButton listButton, Object previousSelectedItem) {
            File ancestorDirectory = (File) listButton.getSelectedItem();
            if (ancestorDirectory != null) {
                fileBrowser.setRootDirectory(ancestorDirectory);
            }
        }
    });
    goUpButton.getButtonPressListeners().add(new ButtonPressListener() {

        @Override
        public void buttonPressed(Button button) {
            File rootDirectory = fileBrowser.getRootDirectory();
            File parentDirectory = rootDirectory.getParentFile();
            fileBrowser.setRootDirectory(parentDirectory);
        }
    });
    newFolderButton.getButtonPressListeners().add(new ButtonPressListener() {

        @Override
        public void buttonPressed(Button button) {
        // TODO
        }
    });
    goHomeButton.getButtonPressListeners().add(new ButtonPressListener() {

        @Override
        public void buttonPressed(Button button) {
            fileBrowser.setRootDirectory(HOME_DIRECTORY);
        }
    });
    /**
     * {@link KeyCode#DOWN DOWN} Transfer focus to the file list and select
     * the first item.<br> {@link KeyCode#ESCAPE ESCAPE} Clear the search
     * field.
     */
    searchTextInput.getComponentKeyListeners().add(new ComponentKeyListener() {

        @Override
        public boolean keyPressed(Component componentArgument, int keyCode, Keyboard.KeyLocation keyLocation) {
            boolean consumed = false;
            if (keyCode == Keyboard.KeyCode.ESCAPE) {
                searchTextInput.setText("");
                consumed = true;
            } else if (keyCode == Keyboard.KeyCode.DOWN) {
                if (fileTableView.getTableData().getLength() > 0) {
                    fileTableView.setSelectedIndex(0);
                    fileTableView.requestFocus();
                }
            }
            return consumed;
        }
    });
    searchTextInput.getTextInputContentListeners().add(new TextInputContentListener() {

        @Override
        public void textChanged(TextInput textInput) {
            refreshFileList();
        }
    });
    fileTableView.getTableViewSelectionListeners().add(new TableViewSelectionListener() {

        @Override
        public void selectedRangeAdded(TableView tableView, int rangeStart, int rangeEnd) {
            if (!updatingSelection) {
                updatingSelection = true;
                for (int i = rangeStart; i <= rangeEnd; i++) {
                    @SuppressWarnings("unchecked") List<File> files = (List<File>) fileTableView.getTableData();
                    File file = files.get(i);
                    fileBrowser.addSelectedFile(file);
                }
                updatingSelection = false;
            }
        }

        @Override
        public void selectedRangeRemoved(TableView tableView, int rangeStart, int rangeEnd) {
            if (!updatingSelection) {
                updatingSelection = true;
                for (int i = rangeStart; i <= rangeEnd; i++) {
                    @SuppressWarnings("unchecked") List<File> files = (List<File>) fileTableView.getTableData();
                    File file = files.get(i);
                    fileBrowser.removeSelectedFile(file);
                }
                updatingSelection = false;
            }
        }

        @Override
        public void selectedRangesChanged(TableView tableView, Sequence<Span> previousSelectedRanges) {
            if (!updatingSelection && previousSelectedRanges != null) {
                updatingSelection = true;
                @SuppressWarnings("unchecked") Sequence<File> files = (Sequence<File>) tableView.getSelectedRows();
                for (int i = 0, n = files.getLength(); i < n; i++) {
                    File file = files.get(i);
                    files.update(i, file);
                }
                fileBrowser.setSelectedFiles(files);
                updatingSelection = false;
            }
        }

        @Override
        public void selectedRowChanged(TableView tableView, Object previousSelectedRow) {
        // No-op
        }
    });
    fileTableView.getTableViewSortListeners().add(new TableViewSortListener() {

        @Override
        public void sortChanged(TableView tableView) {
            TableView.SortDictionary sort = fileTableView.getSort();
            if (!sort.isEmpty()) {
                Dictionary.Pair<String, SortDirection> pair = fileTableView.getSort().get(0);
                @SuppressWarnings("unchecked") List<File> files = (List<File>) fileTableView.getTableData();
                files.setComparator(getFileComparator(pair.key, pair.value));
            }
        }
    });
    fileTableView.getComponentMouseButtonListeners().add(new ComponentMouseButtonListener() {

        private int index = -1;

        @Override
        public boolean mouseClick(Component componentArgument, Mouse.Button button, int x, int y, int count) {
            boolean consumed = false;
            if (count == 1) {
                index = fileTableView.getRowAt(y);
            } else if (count == 2) {
                int indexLocal = fileTableView.getRowAt(y);
                if (indexLocal != -1 && indexLocal == this.index && fileTableView.isRowSelected(indexLocal)) {
                    File file = (File) fileTableView.getTableData().get(indexLocal);
                    if (file.isDirectory()) {
                        fileBrowser.setRootDirectory(file);
                        consumed = true;
                    }
                }
            }
            return consumed;
        }
    });
    fileBrowser.setFocusTraversalPolicy(new IndexFocusTraversalPolicy() {

        @Override
        public Component getNextComponent(Container container, Component componentArgument, FocusTraversalDirection direction) {
            Component nextComponent;
            if (componentArgument == null) {
                nextComponent = fileTableView;
            } else {
                nextComponent = super.getNextComponent(container, componentArgument, direction);
            }
            return nextComponent;
        }
    });
    fileTableView.setSort(TableViewFileRenderer.NAME_KEY, SortDirection.ASCENDING);
    fileTableView.getComponentTooltipListeners().add(new ComponentTooltipListener() {

        @Override
        public void tooltipTriggered(Component comp, int x, int y) {
            // Check that we are on the first column.
            if (fileTableView.getColumnAt(x) != 0) {
                return;
            }
            // Gets the underlying file
            int row = fileTableView.getRowAt(y);
            if (row < 0) {
                return;
            }
            File file = (File) fileTableView.getTableData().get(row);
            // Construct and show the tooltip.
            final Tooltip tooltip = new Tooltip();
            String text = null;
            if (file != null) {
                text = file.getName();
            }
            if (text == null || text.isEmpty()) {
                return;
            }
            TextArea toolTipTextArea = new TextArea();
            toolTipTextArea.setText(text);
            toolTipTextArea.getStyles().put(Style.wrapText, true);
            toolTipTextArea.getStyles().put(Style.backgroundColor, null);
            tooltip.setContent(toolTipTextArea);
            Point location = comp.getDisplay().getMouseLocation();
            x = location.x;
            y = location.y;
            // Ensure that the tooltip stays on screen
            Display display = comp.getDisplay();
            int tooltipHeight = tooltip.getPreferredHeight();
            if (y + tooltipHeight > display.getHeight()) {
                y -= tooltipHeight;
            }
            int tooltipXOffset = 16;
            int padding = 15;
            toolTipTextArea.setMaximumWidth(display.getWidth() - (x + tooltipXOffset + padding));
            tooltip.setLocation(x + tooltipXOffset, y);
            tooltip.open(comp.getWindow());
        }
    });
    rootDirectoryChanged(fileBrowser, null);
    selectedFilesChanged(fileBrowser, null);
}
Also used : FocusTraversalDirection(org.apache.pivot.wtk.FocusTraversalDirection) ComponentTooltipListener(org.apache.pivot.wtk.ComponentTooltipListener) TextArea(org.apache.pivot.wtk.TextArea) ListButtonSelectionListener(org.apache.pivot.wtk.ListButtonSelectionListener) TableViewSortListener(org.apache.pivot.wtk.TableViewSortListener) Span(org.apache.pivot.wtk.Span) ButtonPressListener(org.apache.pivot.wtk.ButtonPressListener) TextInputContentListener(org.apache.pivot.wtk.TextInputContentListener) Container(org.apache.pivot.wtk.Container) PushButton(org.apache.pivot.wtk.PushButton) ListButton(org.apache.pivot.wtk.ListButton) Button(org.apache.pivot.wtk.Button) ArrayList(org.apache.pivot.collections.ArrayList) List(org.apache.pivot.collections.List) Component(org.apache.pivot.wtk.Component) TextInput(org.apache.pivot.wtk.TextInput) TableViewSelectionListener(org.apache.pivot.wtk.TableViewSelectionListener) BXMLSerializer(org.apache.pivot.beans.BXMLSerializer) TableView(org.apache.pivot.wtk.TableView) SerializationException(org.apache.pivot.serialization.SerializationException) Keyboard(org.apache.pivot.wtk.Keyboard) Tooltip(org.apache.pivot.wtk.Tooltip) IOException(java.io.IOException) Sequence(org.apache.pivot.collections.Sequence) Point(org.apache.pivot.wtk.Point) Point(org.apache.pivot.wtk.Point) ListButton(org.apache.pivot.wtk.ListButton) ComponentKeyListener(org.apache.pivot.wtk.ComponentKeyListener) Mouse(org.apache.pivot.wtk.Mouse) FileBrowser(org.apache.pivot.wtk.FileBrowser) ComponentMouseButtonListener(org.apache.pivot.wtk.ComponentMouseButtonListener) File(java.io.File) Display(org.apache.pivot.wtk.Display)

Example 9 with ListButton

use of org.apache.pivot.wtk.ListButton in project pivot by apache.

the class TerraListButtonSkin method paint.

@Override
public void paint(Graphics2D graphics) {
    ListButton listButton = (ListButton) getComponent();
    int width = getWidth();
    int height = getHeight();
    Color colorLocal = null;
    Color backgroundColorLocal = null;
    Color bevelColorLocal = null;
    Color borderColorLocal = null;
    if (listButton.isEnabled()) {
        colorLocal = this.color;
        backgroundColorLocal = this.backgroundColor;
        bevelColorLocal = (pressed || (listViewPopup.isOpen() && !listViewPopup.isClosing())) ? pressedBevelColor : this.bevelColor;
        borderColorLocal = this.borderColor;
    } else {
        colorLocal = disabledColor;
        backgroundColorLocal = disabledBackgroundColor;
        bevelColorLocal = disabledBevelColor;
        borderColorLocal = disabledBorderColor;
    }
    graphics.setStroke(new BasicStroke());
    // Paint the background
    GraphicsUtilities.setAntialiasingOn(graphics);
    if (!themeIsFlat()) {
        graphics.setPaint(new GradientPaint(width / 2f, 0, bevelColorLocal, width / 2f, height / 2f, backgroundColorLocal));
    } else {
        graphics.setPaint(backgroundColorLocal);
    }
    graphics.fill(new RoundRectangle2D.Double(0.5, 0.5, width - 1, height - 1, CORNER_RADIUS, CORNER_RADIUS));
    // Paint the content
    GraphicsUtilities.setAntialiasingOff(graphics);
    Bounds contentBounds = new Bounds(0, 0, Math.max(width - TRIGGER_WIDTH - 1, 0), Math.max(height - 1, 0));
    Button.DataRenderer dataRenderer = listButton.getDataRenderer();
    dataRenderer.render(listButton.getButtonData(), listButton, false);
    dataRenderer.setSize(Math.max(contentBounds.width - (padding.getWidth() + 2) + 1, 0), Math.max(contentBounds.height - (padding.getHeight() + 2) + 1, 0));
    Graphics2D contentGraphics = (Graphics2D) graphics.create();
    contentGraphics.translate(padding.left + 1, padding.top + 1);
    contentGraphics.clipRect(0, 0, dataRenderer.getWidth(), dataRenderer.getHeight());
    dataRenderer.paint(contentGraphics);
    contentGraphics.dispose();
    GraphicsUtilities.setAntialiasingOn(graphics);
    // Paint the border
    if (!themeIsFlat()) {
        graphics.setPaint(borderColorLocal);
        graphics.setStroke(new BasicStroke(1));
        graphics.draw(new RoundRectangle2D.Double(0.5, 0.5, width - 1, height - 1, CORNER_RADIUS, CORNER_RADIUS));
        graphics.draw(new Line2D.Double(contentBounds.x + contentBounds.width, 0.5, contentBounds.x + contentBounds.width, contentBounds.height));
    }
    // Paint the focus state
    if (listButton.isFocused()) {
        BasicStroke dashStroke = new BasicStroke(1.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 0.0f, 2.0f }, 0.0f);
        graphics.setStroke(dashStroke);
        graphics.setColor(borderColorLocal);
        graphics.draw(new RoundRectangle2D.Double(2.5, 2.5, Math.max(contentBounds.width - 4, 0), Math.max(contentBounds.height - 4, 0), CORNER_RADIUS / 2, CORNER_RADIUS / 2));
    }
    GraphicsUtilities.setAntialiasingOff(graphics);
    // Paint the trigger
    GeneralPath triggerIconShape = new GeneralPath(Path2D.WIND_EVEN_ODD);
    triggerIconShape.moveTo(0, 0);
    triggerIconShape.lineTo(3, 3);
    triggerIconShape.lineTo(6, 0);
    triggerIconShape.closePath();
    Graphics2D triggerGraphics = (Graphics2D) graphics.create();
    triggerGraphics.setStroke(new BasicStroke(0));
    triggerGraphics.setPaint(colorLocal);
    Bounds triggerBounds = getTriggerBounds();
    int tx = triggerBounds.x + Math.round((triggerBounds.width - triggerIconShape.getBounds().width) / 2f) - 1;
    int ty = triggerBounds.y + Math.round((triggerBounds.height - triggerIconShape.getBounds().height) / 2f) - 1;
    triggerGraphics.translate(tx, ty);
    triggerGraphics.draw(triggerIconShape);
    triggerGraphics.fill(triggerIconShape);
    triggerGraphics.dispose();
    // Paint the trigger highlight
    if (listButton.isRepeatable()) {
        Point mouseLocation = listButton.getMouseLocation();
        if (mouseLocation != null) {
            graphics.setPaint(new Color(0, 0, 0, 0.25f));
            if (triggerBounds.contains(mouseLocation)) {
                graphics.clipRect(triggerBounds.x, triggerBounds.y, triggerBounds.width, height);
            } else {
                graphics.clipRect(0, 0, width - triggerBounds.width, height);
            }
            GraphicsUtilities.setAntialiasingOn(graphics);
            graphics.fill(new RoundRectangle2D.Double(0.5, 0.5, width - 1, height - 1, CORNER_RADIUS, CORNER_RADIUS));
            GraphicsUtilities.setAntialiasingOff(graphics);
        }
    }
}
Also used : BasicStroke(java.awt.BasicStroke) GeneralPath(java.awt.geom.GeneralPath) Color(java.awt.Color) RoundRectangle2D(java.awt.geom.RoundRectangle2D) Bounds(org.apache.pivot.wtk.Bounds) GradientPaint(java.awt.GradientPaint) Point(org.apache.pivot.wtk.Point) Line2D(java.awt.geom.Line2D) Point(org.apache.pivot.wtk.Point) GradientPaint(java.awt.GradientPaint) Graphics2D(java.awt.Graphics2D) ListButton(org.apache.pivot.wtk.ListButton) Button(org.apache.pivot.wtk.Button) ListButton(org.apache.pivot.wtk.ListButton)

Example 10 with ListButton

use of org.apache.pivot.wtk.ListButton in project pivot by apache.

the class TerraListButtonSkin method getBaseline.

@Override
public int getBaseline(int width, int height) {
    ListButton listButton = (ListButton) getComponent();
    Button.DataRenderer dataRenderer = listButton.getDataRenderer();
    dataRenderer.render(listButton.getButtonData(), listButton, false);
    int clientWidth = Math.max(width - (TRIGGER_WIDTH + padding.getWidth() + 2), 0);
    int clientHeight = Math.max(height - (padding.getHeight() + 2), 0);
    int baseline = dataRenderer.getBaseline(clientWidth, clientHeight);
    if (baseline != -1) {
        baseline += padding.top + 1;
    }
    return baseline;
}
Also used : ListButton(org.apache.pivot.wtk.ListButton) Button(org.apache.pivot.wtk.Button) ListButton(org.apache.pivot.wtk.ListButton) Point(org.apache.pivot.wtk.Point) GradientPaint(java.awt.GradientPaint)

Aggregations

ListButton (org.apache.pivot.wtk.ListButton)25 Button (org.apache.pivot.wtk.Button)13 Point (org.apache.pivot.wtk.Point)8 ButtonPressListener (org.apache.pivot.wtk.ButtonPressListener)7 PushButton (org.apache.pivot.wtk.PushButton)7 ArrayList (org.apache.pivot.collections.ArrayList)6 ListButtonSelectionListener (org.apache.pivot.wtk.ListButtonSelectionListener)6 GradientPaint (java.awt.GradientPaint)5 BXMLSerializer (org.apache.pivot.beans.BXMLSerializer)5 IOException (java.io.IOException)4 File (java.io.File)3 List (org.apache.pivot.collections.List)3 SerializationException (org.apache.pivot.serialization.SerializationException)3 Component (org.apache.pivot.wtk.Component)3 Container (org.apache.pivot.wtk.Container)3 Display (org.apache.pivot.wtk.Display)3 TableView (org.apache.pivot.wtk.TableView)3 TableViewSortListener (org.apache.pivot.wtk.TableViewSortListener)3 Color (java.awt.Color)2 Sequence (org.apache.pivot.collections.Sequence)2