Eclipse Workbench以外でのEclipse GUIの使用 第3回: アクション、メニュー、およびツールバーを追加する

                
import org.eclipse.jface.action.*;
import org.eclipse.jface.window.*;
public class ExitAction extends Action
{
ApplicationWindow window;

public ExitAction(ApplicationWindow w)
{
window = w;
setText("E&xit");
}
public void run()
{
window.close();
}
}

                
protected MenuManager createMenuManager()
{
MenuManager bar_menu = new MenuManager("");
MenuManager file_menu = new MenuManager("&File");
MenuManager edit_menu = new MenuManager("&Edit");
MenuManager view_menu = new MenuManager("&View");
bar_menu.add(file_menu);
bar_menu.add(edit_menu);
bar_menu.add(view_menu);
file_menu.add(new ExitAction(this));
return bar_menu;
}

                
import org.eclipse.jface.action.*;
import org.eclipse.jface.resource.*;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
public class ExitAction extends Action
{
  ApplicationWindow window;
  public ExitAction(ApplicationWindow w)
  {
    window = w;
setText("E&xit@Ctrl+W");
    setToolTipText("Exit the application");
    setImageDescriptor(
      ImageDescriptor.createFromURL(Util.newURL("file:icons/close.gif")));
  }
  public void run()
  {
    window.close();
  }
}

                
import org.eclipse.jface.action.*;
import org.eclipse.jface.window.*;
public class ExitAction extends Action
{
ApplicationWindow window;

public ExitAction(ApplicationWindow w)
{
window = w;
setText("E&xit");
}
public void run()
{
window.close();
}
}

                
import java.net.*;
import org.eclipse.jface.resource.*;
import org.eclipse.swt.dnd.*;
import org.eclipse.swt.widgets.*;
public class Util
{
  private static ImageRegistry image_registry;
  private static Clipboard clipboard;
  public static URL newURL(String url_name)
  {
    try
    {
      return new URL(url_name);
    }
    catch (MalformedURLException e)
    {
      throw new RuntimeException("Malformed URL " + url_name, e);
    }
  }
  public static ImageRegistry getImageRegistry()
  {
    if (image_registry == null)
    {
      image_registry = new ImageRegistry();
      image_registry.put(
        "folder",
        ImageDescriptor.createFromURL(newURL("file:icons/folder.gif")));
      image_registry.put(
        "file",
        ImageDescriptor.createFromURL(newURL("file:icons/file.gif")));
    }
    return image_registry;
  }
public static Clipboard getClipboard()
  {
    if (clipboard == null)
    {
      clipboard = new Clipboard(Display.getCurrent());
    }
    return clipboard;
  }
}

                
import java.io.*;
import java.util.*;
import org.eclipse.jface.action.*;
import org.eclipse.jface.resource.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.*;
import org.eclipse.swt.dnd.*;
public class CopyFileNamesToClipboardAction extends Action
{
Explorer window;
public CopyFileNamesToClipboardAction(Explorer w)
{
window = w;
setToolTipText("Copy absolute file names of selected files to the clipboard");
setText("Copy File &Names@Ctrl+Shift+C");
setImageDescriptor(
ImageDescriptor.createFromURL(Util.newURL("file:icons/copy.gif")));
}
public void run()
{
Clipboard clipboard = Util.getClipboard();
TextTransfer text_transfer = TextTransfer.getInstance();
IStructuredSelection selection = window.getTableSelection();
if (selection.isEmpty())
{
return;
}
StringBuffer string_buffer = new StringBuffer();
for (Iterator i = selection.iterator(); i.hasNext();)
{
File file = (File) i.next();
string_buffer.append(" ");
string_buffer.append(file.getAbsolutePath());
}
clipboard.setContents(
new Object[] { string_buffer.toString()},
new Transfer[] { text_transfer });
}
}

                
import java.io.*;
import org.eclipse.jface.action.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.widgets.*;
public class Explorer extends ApplicationWindow
{
private TableViewer tbv;
...
public static void main(String[] args)
{
Explorer w = new Explorer();
w.setBlockOnOpen(true);
w.open();
Display.getCurrent().dispose();
Util.getClipboard().dispose();
}
protected MenuManager createMenuManager()
{
MenuManager bar_menu = new MenuManager("");
MenuManager file_menu = new MenuManager("&File");
MenuManager edit_menu = new MenuManager("&Edit");
MenuManager view_menu = new MenuManager("&View");
bar_menu.add(file_menu);
bar_menu.add(edit_menu);
bar_menu.add(view_menu);
file_menu.add(new ExitAction(this));
edit_menu.add(new CopyFileNamesToClipboardAction(this));
edit_menu.add(new OpenAction(this));
return bar_menu;
}
public IStructuredSelection getTableSelection()
{
return (IStructuredSelection) (tbv.getSelection());
}
}

                
import java.io.*;
import org.eclipse.jface.action.*;
import org.eclipse.jface.resource.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.program.*;
public class OpenAction
extends Action
implements ISelectionChangedListener
{
Explorer window;
public OpenAction(Explorer w)
{
window = w;
setText("Run");
setToolTipText("Run the associated program on a file");
setImageDescriptor(
ImageDescriptor.createFromURL(Util.newURL("file:icons/run.gif")));
}
public void run()
{
IStructuredSelection selection = window.getTableSelection();
if (selection.size() != 1)
{
return;
}
File selected_file = (File) selection.getFirstElement();
if (selected_file.isFile())
{
Program.launch(selected_file.getAbsolutePath());
}
}
public void selectionChanged(SelectionChangedEvent event)
{
setText("Run");
setToolTipText("Run the associated program on a file");
IStructuredSelection selection = window.getTableSelection();
if (selection.size() != 1)
{
setEnabled(false);
setToolTipText(
getToolTipText() + " (Only enabled when exactly one item is selected)");
return;
}
File file = (File) selection.getFirstElement();
if (file.isFile())
{
setEnabled(true);
setText("Run the associated program on " + file.getName());
setToolTipText(
"Run the program associated with "
+ file.getName()
+ " with this file as the argument");
}
}
}

                
...
public class Explorer extends ApplicationWindow
{
private TableViewer tbv;
private OpenAction open_action;
...
protected Control createContents(Composite parent)
{
...
tbv.addSelectionChangedListener(open_action);
return sash_form;
}
...
protected MenuManager createMenuManager()
{
MenuManager bar_menu = new MenuManager("");
MenuManager file_menu = new MenuManager("&File");
MenuManager edit_menu = new MenuManager("&Edit");
MenuManager view_menu = new MenuManager("&View");
bar_menu.add(file_menu);
bar_menu.add(edit_menu);
bar_menu.add(view_menu);
file_menu.add(new ExitAction(this));
edit_menu.add(new CopyFileNamesToClipboardAction(this));
open_action = new OpenAction(this);
edit_menu.add(open_action);
return bar_menu;
}
...
}

                
import java.io.*;
import org.eclipse.jface.action.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.jface.window.*;
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.widgets.*;
public class Explorer extends ApplicationWindow
{
private TableViewer tbv;
private TreeViewer tv;
private OpenAction open_action;
private ExitAction exit_action;
private CopyFileNamesToClipboardAction copy_action;
public Explorer()
{
super(null);
exit_action = new ExitAction(this);
copy_action = new CopyFileNamesToClipboardAction(this);
open_action = new OpenAction(this);
addStatusLine();
addMenuBar();
addToolBar(SWT.FLAT | SWT.WRAP);
}
protected Control createContents(Composite parent)
{
getShell().setText("JFace File Explorer");
SashForm sash_form = new SashForm(parent, SWT.HORIZONTAL | SWT.NULL);
tv = new TreeViewer(sash_form);
tv.setContentProvider(new FileTreeContentProvider());
tv.setLabelProvider(new FileTreeLabelProvider());
tv.setInput(new File("C://"));
tv.addFilter(new AllowOnlyFoldersFilter());
tbv =
new TableViewer(sash_form, SWT.BORDER| SWT.FULL_SELECTION | SWT.MULTI);
tbv.setContentProvider(new FileTableContentProvider());
tbv.setLabelProvider(new FileTableLabelProvider());
tbv.setSorter(new FileSorter());
TableColumn column = new TableColumn(tbv.getTable(), SWT.LEFT);
column.setText("Name");
column.setWidth(200);

column = new TableColumn(tbv.getTable(), SWT.RIGHT);
column.setText("Size");
column.setWidth(100);
tbv.getTable().setHeaderVisible(true);
tv.addSelectionChangedListener(new ISelectionChangedListener()
{
public void selectionChanged(SelectionChangedEvent event)
{
IStructuredSelection selection =
(IStructuredSelection) event.getSelection();
Object selected_file = selection.getFirstElement();
tbv.setInput(selected_file);
}
});
tbv.addSelectionChangedListener(new ISelectionChangedListener()
{
public void selectionChanged(SelectionChangedEvent event)
{
IStructuredSelection selection =
(IStructuredSelection) event.getSelection();
setStatus("Number of items selected is " + selection.size());
}
});
tbv.addSelectionChangedListener(open_action);
MenuManager menu_manager = new MenuManager();
tbv.getTable().setMenu(menu_manager.createContextMenu(tbv.getTable()));
menu_manager.add(exit_action);
menu_manager.add(copy_action);
menu_manager.add(open_action);
return sash_form;
}
public static void main(String[] args)
{
Explorer w = new Explorer();
w.setBlockOnOpen(true);
w.open();
Display.getCurrent().dispose();
Util.getClipboard().dispose();
}
protected MenuManager createMenuManager()
{
MenuManager bar_menu = new MenuManager("");
MenuManager file_menu = new MenuManager("&File");
MenuManager edit_menu = new MenuManager("&Edit");
MenuManager view_menu = new MenuManager("&View");
bar_menu.add(file_menu);
bar_menu.add(edit_menu);
bar_menu.add(view_menu);
file_menu.add(exit_action);
edit_menu.add(copy_action);
edit_menu.add(open_action);
return bar_menu;
}
public IStructuredSelection getTableSelection()
{
return (IStructuredSelection) (tbv.getSelection());
}
public void openFolder(File folder)

{
tv.setExpandedState(folder, true);
tv.setSelection(new StructuredSelection(folder), false);
}

protected ToolBarManager createToolBarManager(int style)
{
ToolBarManager tool_bar_manager = new ToolBarManager(style);
tool_bar_manager.add(exit_action);
tool_bar_manager.add(copy_action);
tool_bar_manager.add(open_action);
return tool_bar_manager;
}
}