Creating a ViewForm : ViewForm « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. ViewForm

1. ViewForm creates three controls in a row across the top of a Composite, with a content area below the controls.
2. The first control contains the image in the upper left and the text Outline.
3. The second control contains the toolbar buttons to the right of the text Outline, up to, but not including, the close button in the upper right.
4. The third control is the close button in the upper right.
5. Everything else is the content area.

You create a ViewForm by calling its only constructor:

ViewForm(Composite parent, int style)

The applicable styles for ViewForm are

1. SWT.BORDER, which draws a visible border and a drop shadow around the ViewForm, and
2. SWT.FLAT, which eliminates the drop shadow.
3. SWT.FLAT must be combined with SWT.BORDER (using the bitwise OR operator) to have any effect.

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.custom.ViewForm;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;

public class ViewFormCreate {
  private static int count = 0;

  static Display display = new Display();

  private static void createViewFormHelper(final Composite parent, String text) {
    final ViewForm vf = new ViewForm(parent, SWT.BORDER);

    CLabel label = new CLabel(vf, SWT.NONE);
    label.setText(text);
    label.setImage(new Image(display, "yourFile.gif"));
    label.setAlignment(SWT.LEFT);
    vf.setTopLeft(label);

    final ToolBar tbMenu = new ToolBar(vf, SWT.FLAT);
    final ToolItem itemMenu = new ToolItem(tbMenu, SWT.PUSH);
    vf.setTopCenter(tbMenu);

    ToolBar tbClose = new ToolBar(vf, SWT.FLAT);
    ToolItem itemClose = new ToolItem(tbClose, SWT.PUSH);
    itemClose.setImage(new Image(display, "yourFile.gif"));
    itemClose.setText("X");
    itemClose.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        vf.dispose();
        parent.layout();
      }
    });
    vf.setTopRight(tbClose);

    final Text textArea = new Text(vf, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL);
    vf.setContent(textArea);

    final Menu menu = new Menu(tbMenu);
    MenuItem clear = new MenuItem(menu, SWT.NONE);
    clear.setText("Clear");
    clear.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        textArea.setText("");
      }
    });

    itemMenu.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        Rectangle rect = itemMenu.getBounds();
        menu.setLocation(tbMenu.toDisplay(rect.x, rect.y + rect.height));
        menu.setVisible(true);
      }
    });
  }

  public static void main(String[] args) {

    Shell shell = new Shell(display);
    shell.setText("Look");

    shell.setLayout(new GridLayout(1, false));

    Button button = new Button(shell, SWT.PUSH);
    button.setText("New Document");

    final Composite composite = new Composite(shell, SWT.NONE);
    composite.setLayoutData(new GridData(GridData.FILL_BOTH));
    composite.setLayout(new FillLayout());

    button.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        createViewFormHelper(composite, "Document " + (++count));
        composite.layout();
      }
    });

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

17.87.ViewForm
	17.87.1.	Creating a ViewForm