Java Tutorial/SWT/ToolItem

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Add check buttons to ToolBar

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemCheckBox{ 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
   for (int i = 0; i < 4; i++) {
     ToolItem item = new ToolItem(bar, SWT.CHECK);
     item.setText("Item " + i);
   }
   bar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Add image to ToolItem

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemImage { 

 public static void main(String[] args) {
   Display display = new Display();
   Image image = new Image(display, "yourFile.gif");
   Shell shell = new Shell(display);
   ToolBar toolBar = new ToolBar(shell, SWT.FLAT | SWT.BORDER);
   for (int i = 0; i < 12; i++) {
     ToolItem item = new ToolItem(toolBar, SWT.DROP_DOWN);
     item.setImage(image);
   }
   toolBar.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   image.dispose();
   display.dispose();
 }

}</source>





Add radio buttons to ToolBar

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemRadioButton { 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
   for (int i = 0; i < 4; i++) {
     ToolItem item = new ToolItem(bar, SWT.RADIO);
     item.setText("Item " + i);
   }
   bar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Add SelectionListener to ToolItem

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemSelectionListenerAdding { 

 public static void main(String[] args) {
   Display display = new Display();
   final Shell shell = new Shell(display);
   GridLayout gridLayout = new GridLayout();
   gridLayout.numColumns = 3;
   shell.setLayout(gridLayout);
   ToolBar toolbar = new ToolBar(shell, SWT.NONE);
   ToolItem itemBack = new ToolItem(toolbar, SWT.PUSH);
   itemBack.setText("Back");
   ToolItem itemForward = new ToolItem(toolbar, SWT.PUSH);
   itemForward.setText("Forward");
   ToolItem itemStop = new ToolItem(toolbar, SWT.PUSH);
   itemStop.setText("Stop");
   ToolItem itemRefresh = new ToolItem(toolbar, SWT.PUSH);
   itemRefresh.setText("Refresh");
   ToolItem itemGo = new ToolItem(toolbar, SWT.PUSH);
   itemGo.setText("Go");
   GridData data = new GridData();
   data.horizontalSpan = 3;
   toolbar.setLayoutData(data);
   Listener listener = new Listener() {
     public void handleEvent(Event event) {
       ToolItem item = (ToolItem) event.widget;
       String string = item.getText();
       if (string.equals("Back"))
         System.out.println("Back");
       else if (string.equals("Forward"))
         System.out.println("Forward");
       else if (string.equals("Stop"))
         System.out.println("Stop");
       else if (string.equals("Refresh"))
         System.out.println("Refresh");
       else if (string.equals("Go"))
         System.out.println("Go");
     }
   };
   itemBack.addListener(SWT.Selection, listener);
   itemForward.addListener(SWT.Selection, listener);
   itemStop.addListener(SWT.Selection, listener);
   itemRefresh.addListener(SWT.Selection, listener);
   itemGo.addListener(SWT.Selection, listener);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Add ToolItem to ToolBar

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolBarToolItemAdd { 

 public static void main(String[] args) {
   Shell shell = new Shell();
   ToolBar bar = new ToolBar(shell, SWT.BORDER);
   for (int i = 0; i < 8; i++) {
     ToolItem item = new ToolItem(bar, SWT.PUSH);
     item.setText("Item " + i);
   }
   bar.pack();
   shell.open();
   Display display = shell.getDisplay();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Constants for Creating Tool Items

ConstantDescriptionSWT.CHECKCreates a stateful push button ("toggle" button).SWT.DROP_DOWNCreates a dropdown.SWT.PUSHCreates a traditional push button.SWT.RADIOCreates a grouped stateful push button (only one in the group may be selected at a time).SWT.SEPARATORCreates a separator.


Create a push button

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemButtonPush{ 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
   for (int i = 0; i < 4; i++) {
     ToolItem item = new ToolItem(bar, SWT.PUSH);
     item.setText("Item " + i);
   }
   bar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Creating Radio Groups

To create more than one group of radio buttons in the same toolbar, separate each group using a separator.



   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemRadioGroups { 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar toolBar = new ToolBar(shell, SWT.BORDER | SWT.VERTICAL);
   ToolItem item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("One");
   item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("Two");
   item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("Three");
   new ToolItem(toolBar, SWT.SEPARATOR); // Signals end of group
   item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("One");
   item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("Two");
   item = new ToolItem(toolBar, SWT.RADIO);
   item.setText("Three");
   toolBar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Two dropdowns

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemDropDown { 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
   for (int i = 0; i < 4; i++) {
     ToolItem item = new ToolItem(bar, SWT.DROP_DOWN);
     item.setText("asdf");
   }
   bar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Update a status line when the pointer enters a ToolItem

   <source lang="java">

/******************************************************************************* 

* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
*     IBM Corporation - initial API and implementation
*******************************************************************************/

//package org.eclipse.swt.snippets; /* 

* ToolBar example snippet: update a status line when the pointer enters a ToolItem
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/

import org.eclipse.swt.SWT; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.MouseMoveListener; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemStatusLine { 

 static String statusText = "";
 public static void main(String[] args) {
   final Display display = new Display();
   Shell shell = new Shell(display);
   shell.setBounds(10, 10, 200, 200);
   final ToolBar bar = new ToolBar(shell, SWT.BORDER);
   bar.setBounds(10, 10, 150, 50);
   final Label statusLine = new Label(shell, SWT.BORDER);
   statusLine.setBounds(10, 90, 150, 30);
   new ToolItem(bar, SWT.NONE).setText("item 1");
   new ToolItem(bar, SWT.NONE).setText("item 2");
   new ToolItem(bar, SWT.NONE).setText("item 3");
   bar.addMouseMoveListener(new MouseMoveListener() {
     public void mouseMove(MouseEvent e) {
       ToolItem item = bar.getItem(new Point(e.x, e.y));
       String name = "";
       if (item != null) {
         name = item.getText();
       }
       if (!statusText.equals(name)) {
         statusLine.setText(name);
         statusText = name;
       }
     }
   });
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>





Working with Dropdowns

To provide Combo-like functionality to a dropdown tool item:



   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; 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.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class ToolItemDropDownMenu { 

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   ToolBar toolBar = new ToolBar(shell, SWT.BORDER | SWT.VERTICAL);
   ToolItem item = new ToolItem(toolBar, SWT.DROP_DOWN);
   item.setText("One");
   DropdownSelectionListener listenerOne = new DropdownSelectionListener(item);
   listenerOne.add("Option One for One");
   listenerOne.add("Option Two for One");
   listenerOne.add("Option Three for One");
   item.addSelectionListener(listenerOne);
   toolBar.pack();
   shell.pack();
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

} class DropdownSelectionListener extends SelectionAdapter { 

 private ToolItem dropdown;
 private Menu menu;
 public DropdownSelectionListener(ToolItem dropdown) {
   this.dropdown = dropdown;
   menu = new Menu(dropdown.getParent().getShell());
 }
 public void add(String item) {
   MenuItem menuItem = new MenuItem(menu, SWT.NONE);
   menuItem.setText(item);
   menuItem.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent event) {
       MenuItem selected = (MenuItem) event.widget;
       dropdown.setText(selected.getText());
     }
   });
 }
 public void widgetSelected(SelectionEvent event) {
   if (event.detail == SWT.ARROW) {
     ToolItem item = (ToolItem) event.widget;
     Rectangle rect = item.getBounds();
     Point pt = item.getParent().toDisplay(new Point(rect.x, rect.y));
     menu.setLocation(pt.x, pt.y + rect.height);
     menu.setVisible(true);
   } else {
     System.out.println(dropdown.getText() + " Pressed");
   }
 }

}</source>


Источник — «http://www.jexp.ru/index.php?title=Java_Tutorial/SWT/ToolItem&oldid=3082»