eclipse彈出窗口

Question

如何創建彈出窗口，類似於eclipse jdt中用於javadoc的窗口。當鼠標懸停在圖形節點上時，我需要顯示其他信息。

Answer 1

我覺得IInformationPresenter (eclipse.org API)接口可以幫助你在這裏。

一個寫得很好的關於如何使用它可以在IBM找到教程：

"Equipping SWT applications with content assistants" by Berthold Daum

Answer 2

org.eclipse.jface.dialogs.PopupDialog似乎是一個很好的起點。

Answer 3

得到這個代碼here：

public class InfoPopUp extends PopupDialog { 

    /** 
    * The text control that displays the text. 
    */ 
    private Text text; 

    /** 
    * The String shown in the popup. 
    */ 
    private String contents = ""; 

    private final static int SHELL_STYLE = PopupDialog.INFOPOPUP_SHELLSTYLE; 

    public InfoPopUp(Shell parent, String infoText) { 
     this(parent, SHELL_STYLE, false, false, false, false, false, null, 
       infoText); 
    } 

    public InfoPopUp(Shell parent, String titleText, String infoText) { 
     this(parent, SHELL_STYLE, false, false, false, true, true, titleText, 
       infoText); 
    } 

    public InfoPopUp(Shell parent, int shellStyle, boolean takeFocusOnOpen, 
      boolean persistSize, boolean persistLocation, 
      boolean showDialogMenu, boolean showPersistActions, 
      String titleText, String infoText) { 
     super(parent, shellStyle, takeFocusOnOpen, persistSize, 
       persistLocation, showDialogMenu, showPersistActions, titleText, 
       infoText); 
    } 

    /** 
    * This method is used to show the animation by decreasing the x and y 
    * coordinates and by setting the size dynamically. 
    * 
    * @param shell 
    *   of type {@link Shell} 
    */ 
    private static void doAnimation(Shell shell) { 
     Point shellArea = shell.getSize(); 
     int x = shellArea.x; 
     int y = shellArea.y; 
     while (x != -200) { 
      try { 
       shell.setSize(x--, y--); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    } 

    protected void fillDialogMenu(IMenuManager dialogMenu) { 
     dialogMenu.addMenuListener(new IMenuListener() { 
      public void menuAboutToShow(IMenuManager arg0) { 
       handleShellCloseEvent(); 
      } 
     }); 
    } 

    protected void handleShellCloseEvent() { 
     // Comment out the following if do not want any kind of animated effect. 
     doAnimation(getShell()); 
     super.handleShellCloseEvent(); 
    } 

    protected Control createDialogArea(Composite parent) { 
     text = new Text(parent, SWT.MULTI | SWT.READ_ONLY | SWT.WRAP | SWT.NO_FOCUS); 
     text.setText(contents); 
     return text; 
    } 

    protected void adjustBounds() { 
     super.adjustBounds(); 
     // Point pt = getShell().getDisplay().getCursorLocation(); 
     // getShell().setBounds(pt.x,pt.y,rectangle.width,rectangle.height); 
    } 

    /** 
    * Method to set the text contents of the InfoPop dialog 
    * 
    * @param textContents 
    *   of type String indicating the message 
    */ 
    public void setText(String textContents) { 
     this.contents = textContents; 
    } 

    protected Control createTitleMenuArea(Composite arg0) { 
     Control ctrl = super.createTitleMenuArea(arg0); 
     Composite composite = (Composite) ctrl; 
     Control[] ctrls = composite.getChildren(); 

     ToolBar toolBar = (ToolBar) ctrls[1]; 
     ToolItem[] toolItems = toolBar.getItems(); 
     toolItems[0].setImage(Display.getDefault().getSystemImage(SWT.ICON_WARNING)); 

     return ctrl; 
    } 
}