import com.sencha.gxt.widget.core.client.grid.GridSelectionModel; //导入依赖的package包/类
private Widget createPanel() {
		userNameField = new TextField();
		userNameField.setTitle(UIMessages.INSTANCE.gitHubUserNameField());
		userNameField.setEmptyText(UIMessages.INSTANCE.gitHubUserNameField());
		userNameField.setWidth(FIELD_WIDTH);

		repositoryField = new TextField();
		repositoryField.setTitle("Repositorio");
		repositoryField.setEmptyText("Introduce repositorio");
		repositoryField.setWidth(FIELD_WIDTH);

		pathField = new TextField();
		pathField.setTitle(UIMessages.INSTANCE.gitHubPathNameField());
		pathField.setEmptyText(UIMessages.INSTANCE.gitHubPathNameField());
		pathField.setWidth(FIELD_WIDTH);

		TextButton repositoryButton = new TextButton("...");		
		TextButton pathButton = new TextButton("...");
		TextButton loadFilesButton = new TextButton(UIMessages.INSTANCE.loadFiles());
		
		final VerticalLayoutContainer vPanel = new VerticalLayoutContainer();

		vPanel.add(userNameField);
		
		final HorizontalPanel repositoryPanel = new HorizontalPanel();
		repositoryPanel.add(repositoryField);
		repositoryPanel.add(repositoryButton);
		vPanel.add(repositoryPanel);

		final HorizontalPanel pathPanel = new HorizontalPanel();

		pathPanel.add(pathField);
		pathPanel.add(pathButton);		
		vPanel.add(pathPanel);		
		vPanel.add(loadFilesButton);
		
		repositoryButton.addSelectHandler(getRepository());
		pathButton.addSelectHandler(getPath());
		loadFilesButton.addSelectHandler(requestGetFiles());

		vPanel.addStyleName(ThemeStyles.get().style().borderBottom());
		final GitHubFileListAttributeBeanProperties props = GWT
				.create(GitHubFileListAttributeBeanProperties.class);

		repositoryStore = new ListStore<GitHubFileListAttributeBean>(
				props.key());

		final ColumnConfig<GitHubFileListAttributeBean, String> nameCol = new ColumnConfig<GitHubFileListAttributeBean, String>(
				props.attributeName(), 400,
				UIMessages.INSTANCE.gitHubColumNameRepo());

//		final ColumnConfig<GitHubFileListAttributeBean, String> typeCol = new ColumnConfig<GitHubFileListAttributeBean, String>(
//				props.attributeType(), 200, "Type");

		final List<ColumnConfig<GitHubFileListAttributeBean, ?>> columns = new ArrayList<ColumnConfig<GitHubFileListAttributeBean, ?>>();

		columns.add(nameCol);
		//columns.add(typeCol);

		final ColumnModel<GitHubFileListAttributeBean> columModel = new ColumnModel<GitHubFileListAttributeBean>(
				columns);

		grid = new Grid<GitHubFileListAttributeBean>(repositoryStore,
				columModel);
		// grid.setSelectionModel(new
		// CellSelectionModel<GitHubRepositoryAttributeBean>());
		grid.getColumnModel().getColumn(0).setHideable(false);
		grid.setAllowTextSelection(true);
		grid.getView().setStripeRows(true);
		grid.getView().setColumnLines(true);
		grid.setBorders(false);
		GridSelectionModel<GitHubFileListAttributeBean> sm = new GridSelectionModel<GitHubFileListAttributeBean>();
		sm.setSelectionMode(SelectionMode.SINGLE);
		grid.setSelectionModel(sm);
		setGridDragable(grid);

		vPanel.add(grid, new VerticalLayoutData(1, 1, new Margins(30, 0, 0, 0)));

		return vPanel;
	}