SWT/JFACE——toolbar/toolItem

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工具栏通常有两种： toolbar、coolBar。两者的区分是CoolBar可以自由移动。

toolBar的实现通常有两种方式：

1、使用ToolBar和ToolItem；

2、使用ToolBarManager 、ActionContributionItem、Action组合；

先介绍第一种方式：使用ToolBar和ToolItem

package menu.test;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
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 ToolBarExample {
	Display display = new Display();
	Shell shell = new Shell(display);
	ToolBar toolBar;
	Action forwardAction,homeAction;
	public ToolBarExample() {
		MenuManager menuManager = new MenuManager();
		
		//1.添加工具栏
		toolBar = new ToolBar(shell,SWT.FLAT|SWT.WRAP|SWT.RIGHT |SWT.BORDER);

		//2.添加工具项－push
		ToolItem pushItem = new ToolItem(toolBar,SWT.PUSH);
		pushItem.setText("Push Item");
		Image icon = new Image(shell.getDisplay(),"icons/forward.gif");
		pushItem.setImage(icon);
		
		//3.添加工具项－check,radio,seperator
		ToolItem checkItem = new ToolItem(toolBar,SWT.CHECK);
		checkItem.setText("Check Item");
		ToolItem radioItem1 = new ToolItem(toolBar, SWT.RADIO);
		radioItem1.setText("RADIO item 1");
		ToolItem radioItem2 = new ToolItem(toolBar, SWT.RADIO);
		radioItem2.setText("RADIO item 2");
		ToolItem separatorItem = new ToolItem(toolBar, SWT.SEPARATOR);
		
		//4.下拉DROP_DOWN、
		final ToolItem dropDownItem = new ToolItem(toolBar, SWT.DROP_DOWN);
		dropDownItem.setText("DROP_DOWN item");
		dropDownItem.setToolTipText("Click here to see a drop down menu ...");
		final Menu menu = new Menu(shell, SWT.POP_UP);
		new MenuItem(menu, SWT.PUSH).setText("Menu item 1");
		new MenuItem(menu, SWT.PUSH).setText("Menu item 2");
		new MenuItem(menu, SWT.SEPARATOR);
		new MenuItem(menu, SWT.PUSH).setText("Menu item 3");
		// 设置工具项的事件监听器
		dropDownItem.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				if (event.detail == SWT.ARROW) {
					Rectangle bounds = dropDownItem.getBounds();
					Point point = toolBar.toDisplay(bounds.x, bounds.y + bounds.height);
					// 设置菜单的显示位置
					menu.setLocation(point);
					menu.setVisible(true);
				}
			}
		});
		
		// 5.事件处理
		// 设置工具项的事件监听器
		Listener selectionListener = new Listener() {
			public void handleEvent(Event event) {
				ToolItem item = (ToolItem) event.widget;
				System.out.println(item.getText() + " is selected");
				if ((item.getStyle() & SWT.RADIO) != 0
						|| (item.getStyle() & SWT.CHECK) != 0)
					System.out.println("Selection status: "
							+ item.getSelection());
			}
		};
		pushItem.addListener(SWT.Selection, selectionListener);
		checkItem.addListener(SWT.Selection, selectionListener);
		radioItem1.addListener(SWT.Selection, selectionListener);
		radioItem2.addListener(SWT.Selection, selectionListener);
		dropDownItem.addListener(SWT.Selection, selectionListener);
		
		
		// 6. 其他组件text 、checkbox
		ToolItem textItem = new ToolItem(toolBar,SWT.SEPARATOR);
		Text text = new Text(toolBar, SWT.BORDER | SWT.SINGLE);
	    text.pack();
	    textItem.setWidth(text.getSize().x);
	    textItem.setControl(text);
	    
	    ToolItem sep = new ToolItem(toolBar, SWT.SEPARATOR);
	    Combo combo = new Combo(toolBar, SWT.READ_ONLY);
	    for (int i = 0; i < 4; i++) {
	      combo.add("Item " + i);
	    }
	    combo.pack();
	    sep.setWidth(combo.getSize().x);
	    sep.setControl(combo);
	    
		toolBar.pack();
		shell.addListener(SWT.Resize, new Listener(){

			public void handleEvent(Event arg0) {
				Rectangle clientArea = shell.getClientArea();
				toolBar.setSize(toolBar.computeSize(clientArea.width, SWT.DEFAULT));
				
			}
			
		});
		shell.setSize(400, 300);
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		display.dispose();
	}
	
	public static void main(String[] args) {
		new ToolBarExample();
	}

}

效果图：

对于第二种方法：

package menu;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Decorations;
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;

public class ToolBarMangerExample {
  Display display = new Display();
  Shell shell = new Shell(display);
  Action openAction,exitAction;
  ToolBar toolBar;

  public ToolBarMangerExample() {
    MenuManager menuManager = new MenuManager();
    
    toolBar = new ToolBar(shell, SWT.FLAT | SWT.RIGHT | SWT.BORDER);
    final ToolBarManager toolBarManager = new ToolBarManager(toolBar);
    initActions();// 初始化Action
    toolBarManager.add(openAction);
    ActionContributionItem item = new ActionContributionItem(exitAction);
    item.setMode(ActionContributionItem.MODE_FORCE_TEXT);
    toolBarManager.add(item);
    toolBarManager.update(true);
    toolBar.pack();
    
    MenuManager fileMenuManager = new MenuManager("&File");
    fileMenuManager.add(openAction);
    fileMenuManager.add(exitAction);
    menuManager.add(fileMenuManager);
    menuManager.updateAll(true);
  
    shell.setMenuBar(menuManager.createMenuBar((Decorations)shell));
    shell.addListener(SWT.Resize, new Listener(){

		public void handleEvent(Event arg0) {
			Rectangle clientArea = shell.getClientArea();
			toolBar.setSize(toolBar.computeSize(clientArea.width, SWT.DEFAULT));
		}
	});
    shell.setSize(300,200);
    shell.open();

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

    display.dispose();
  }
  private void initActions(){
	  openAction =
	      new Action("&openAction",
	        ImageDescriptor.createFromFile(null, "icons/Open.gif")) {
	      public void run() {
	        System.out.println("OPEN");
	      }
	    };
	    openAction.setAccelerator(SWT.CTRL + 'O');


	    exitAction =
	      new Action("&Exit",
	        ImageDescriptor.createFromFile(null, "icons/Exit.gif")) {
	      public void run() {
	        System.out.println("Exit");
	      }
	    };
	    exitAction.setAccelerator(SWT.CTRL + 'E');
  }
  public static void main(String[] args) {
    new ToolBarMangerExample();
  }
}

效果图：