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IPath path = new Path("icons/" + fileName);
URL url = find(path);
if (url != null) {
    ImageDescriptor desc = ImageDescriptor.createFromURL(url);
    registry.put(key, desc);
}

CTabFolder tabFolder = new CTabFolder(this, SWT.NONE);

CTabFolder tabFolder = new CTabFolder(this, SWT.CLOSE);

tabFolder.setSelectionBackground(new Color[] {
        getDisplay().getSystemColor(SWT.COLOR_TITLE_BACKGROUND),
        getDisplay().getSystemColor(SWT.COLOR_TITLE_BACKGROUND_GRADIENT)
    }, new int[] { 80 }, true);

tabFolder.setSelectionForeground(
　　　　getDisplay().getSystemColor(SWT.COLOR_WHITE));

CTabItem tabItem = new CTabItem(tabFolder, SWT.CLOSE);

tabFolder.addSelectionListener(new SelectionAdapter() {
    public void widgetSelected(SelectionEvent event) {
        Browser browser = getSelectionBrowser();
        if (browser != null) {
            textUrl.setText(browser.getUrl());
        }
    }
});

tabItem.addDisposeListener(new DisposeListener() {
    public void widgetDisposed(DisposeEvent e) {
        // ブラウザを破棄する
        browser.dispose();
    }
});

browser.addTitleListener(new TitleListener() {
    public void changed(TitleEvent event) {
        tabItem.setText(event.title);
    }
});

browser.addOpenWindowListener(new OpenWindowListener() {
    public void open(WindowEvent event) {
       Browser browser = null;
       browser = new Browser(tabFolder, SWT.NONE);
       event.browser = browser;
       createBrowser(event.browser);
    }
});

browser.addCloseWindowListener(new CloseWindowListener() {
    public void close(WindowEvent event) {
        tabItem.dispose();
    }
});

public void createInitialLayout(IPageLayout layout) {
    // エディタ領域を非表示にする
    layout.setEditorAreaVisible(false);
}

ISelection selection = viewer.getSelection();
Object obj = ((IStructuredSelection) selection).
             getFirstElement();

viewer.expandToLevel(obj, 1)

viewer.collapseToLevel(obj, 1)

IWorkbench workbench = PlatformUI.getWorkbench();
IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
IWorkbenchPage page = window.getActivePage();
BrowserView view = (BrowserView)page.
                   showView("luna.tools.browser.views.BrowserView");
view.setUrl(url);

IWorkbench workbench = 
    PlatformUI.getWorkbench();
WorkbenchWindow workbenchWindow = 
    (WorkbenchWindow)workbench.
    getActiveWorkbenchWindow();
IActionBars bars = 
    workbenchWindow.getActionBars();
IStatusLineManager 
    lineManager = bars.getStatusLineManager();
IProgressMonitor monitor = 
    lineManager.getProgressMonitor();

browser.addLocationListener(
  new LocationListener() {
    /* 読み込み開始 */
    public void changing(LocationEvent event) {
        text.setText(event.location);
        monitor.beginTask(
            "読み込み中："+event.location,100);
    }

    /* 読み込み終了 */
    public void changed(LocationEvent event) {
        text.setText(event.location);
        monitor.done();
    }
});

/* 項目を生成します */
public void createFieldEditors() {
    addField(
        new StringFieldEditor(
        P_STRING, "ホームページURL(&U)", 
        getFieldEditorParent()));
}

/* 初期値の設定 */
protected void initializeDefaultPreferences(
  IPreferenceStore store) {
    store.setDefault(
        PreferencePage.P_STRING,
        "http://www.google.com/");
}

/* ホームに遷移します */
public void home() {
    IPreferenceStore store = 
        BrowserPlugin.getDefault().
        getPreferenceStore();
    String url = 
        store.getString(PreferencePage.P_STRING);
    browser.setUrl(url);
}

/* 戻る*/
public void back() {
    browser.back();
}
/* 進む*/
public void forward() {
    browser.forward();
}

actionBack = new Action() {
    public void run() {
        viewer.back();
    }
};
actionBack.setText("戻る");
actionBack.setToolTipText("戻る");
actionBack.setImageDescriptor(
    PlatformUI.getWorkbench().getSharedImages().
    getImageDescriptor(
        ISharedImages.IMG_TOOL_BACK));

private void contributeToActionBars() {
    IActionBars bars = 
        getViewSite().getActionBars();
    IToolBarManager manager = 
        bars.getToolBarManager();
    manager.add(actionBack);
    manager.add(actionForward);
}

public BrowserComposit(Composite parent,
  int style) {
    super(parent, style);
    initialize();
}

text.addKeyListener(new KeyListener(){
    public void keyPressed(KeyEvent e) {}
    public void keyReleased(KeyEvent e) {
        if (e.character == SWT.CR) {
            browser.setUrl(text.getText());
        }
    }
});