Java Grid.Column方法代碼示例

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
/**
 * Generates component header fields using the passed {@link ComponentHeaderGenerator} and
 * sets them to the columns.
 *
 * @param generator the header generator
 * @return the decorator for method chaining
 */
public ComponentGridDecorator<T> generateHeaders(ComponentHeaderGenerator generator) {
    for (Grid.Column column : grid.getColumns()) {
        grid.getDefaultHeaderRow()
                .getCell(column.getPropertyId())
                .setComponent(generator.getHeader(column.getPropertyId()));
    }
    return this;
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
@Override
public Object[] getVisibleColumns() {
    List<Grid.Column> columns = grid.getColumns();


    Object[] propertyIds = new Object[columns.size()];
    for (int i = 0; i < columns.size(); i++) {
        propertyIds[i] = columns.get(i).getPropertyId();
    }

    return propertyIds;
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
@Override
public void setColumnHeaders(String... columnHeaders) {

    List<Grid.Column> columns = grid.getColumns();

    if (columnHeaders.length != columns.size()) {
        throw new IllegalArgumentException(
            "The given headers did not match the number of declared columns");
    }

    for (int i = 0; i < columnHeaders.length; i++) {
        columns.get(i).setHeaderCaption(columnHeaders[i]);
    }
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
public MGrid<T> withColumnHeaders(String... properties) {
    List<Column<T, ?>> columns = getColumns();
    for (int i = 0; i < columns.size(); i++) {
        Grid.Column<T, ? extends Object> c = columns.get(i);
        c.setCaption(properties[i]);
    }
    return this;
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
@Override
protected void init(VaadinRequest request) {

    VerticalLayout layout = new VerticalLayout();
    layout.setSpacing(true);
    layout.setMargin(true);
    layout.setSizeFull();
    
    
    Grid<DemoPerson> grid = new Grid("<b>Demo Grid</b>", new ListDataProvider(DemoPerson.getPersonList()));
    grid.setCaptionAsHtml(true);
    grid.setSizeFull();
    grid.setSelectionMode(Grid.SelectionMode.NONE);

    Grid.Column<DemoPerson, String> idColumn = grid.addColumn(DemoPerson::getId).setCaption("Id");
    Grid.Column<DemoPerson, String> firstNameColumn = grid.addColumn(DemoPerson::getFirstName).setCaption("Firstname");
    Grid.Column<DemoPerson, String> surNameColumn = grid.addColumn(DemoPerson::getSurName).setCaption("Surname");
    Grid.Column<DemoPerson, String> companyColumn = grid.addColumn(DemoPerson::getCompany, 
            new ClickableTextRenderer(getCompanyClickListener())).setCaption("Company");
    Grid.Column<DemoPerson, String> companyTypeColumn = grid.addColumn(DemoPerson::getCompanyType).setCaption("Company Type");
    Grid.Column<DemoPerson, String> cityColumn = grid.addColumn(DemoPerson::getCity).setCaption("City");
    
    
    // Use the advanced form of the Clickable Text Renderer on 
    // column "city". This will require a value provider where the PRESENTATION
    // class is of type ClickableText. Because the city is of type String
    // the value provider must convert from String to ClickableText.
    cityColumn.setRenderer((String source) -> {
        ClickableText ct = new ClickableText();
        ct.description = "Will take you to " + source;  // Sets the HTML title attribute, aka tooltip
        
        // I want a space between the underlined text and the icon. To avoid the 
        // space being underlined (because of the link styling) I use a
        // a different style for the space itself.
        ct.value = source + "<span class=\"v-icon\">&nbsp;</span>" + VaadinIcons.EXTERNAL_LINK.getHtml();
        ct.isHTML = true;
        return ct;
    }, new ClickableTextRendererAdv<>(getCityClickListener()));
    
    
    layout.addComponent(grid);
    setContent(layout);
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
public CheckBoxDemo() {		
	Random random = new Random(4837291937l);
	BeanItemContainer<SimplePojo> container = new BeanItemContainer<SimplePojo>(SimplePojo.class);
	SimplePojo bean1 = new SimplePojo(0, "Me", true, new Date(), BigDecimal.valueOf(random.nextDouble()*100), Double.valueOf(random.nextInt(5)), Integer.valueOf(random.nextInt(5)));
	SimplePojo bean2 = new SimplePojo(1, "You", false, new Date(), BigDecimal.valueOf(random.nextDouble()*100), Double.valueOf(random.nextInt(5)), Integer.valueOf(random.nextInt(5)));
	SimplePojo bean3 = new SimplePojo(2, "He", true, new Date(), BigDecimal.valueOf(random.nextDouble()*100), Double.valueOf(random.nextInt(5)), Integer.valueOf(random.nextInt(5)));
	container.addBean(bean1);
	container.addBean(bean2);
	container.addBean(bean3);
	byte[] image = Base64.decodeBase64(castle);
	bean1.setImage(image);
	bean2.setImage(image);
	bean3.setImage(image);
	
	Grid grid = new Grid(container);
	grid.setColumns("description","yes","truth","date","number","image");
	grid.setSizeFull();
	grid.setEditorEnabled(true);
	grid.setEditorBuffered(false);
	Grid.Column yes = grid.getColumn("yes");
	yes.setRenderer(new CheckboxRenderer());
	yes.setEditable(true);
	grid.getColumn("image").setEditable(false);
  		grid.getColumn("image").setRenderer(new BlobImageRenderer(30,30,"image/png"));
 
	Grid.Column truth = grid.getColumn("truth");
	truth.setRenderer(new HtmlRenderer(), new StringToBooleanConverter() {
              @Override
              protected String getTrueString() {
                  return FontAwesome.CHECK_CIRCLE_O.getHtml();
              }

              @Override
              protected String getFalseString() {
                  return FontAwesome.CIRCLE_O.getHtml();
              }
          });
	truth.setEditable(false);
  
	setStyleName("demoContentLayout");
	setSizeFull();
	addComponent(grid);
	setComponentAlignment(grid
			, Alignment.MIDDLE_CENTER);
	setMargin(true);
}
 

import com.vaadin.ui.Grid; //導入方法依賴的package包/類
/**
 * Add a generated component column to the ComponentGrid.
 *
 * @param propertyId the generated column's property-id
 * @param generator  the component-generator
 * @return the decorator for method chaining
 */
public Grid.Column addComponentColumn(Object propertyId, ComponentGenerator<T> generator) {
    gpc.addGeneratedProperty(propertyId, new ComponentPropertyGenerator<>(typeOfRows, generator));
    return grid.getColumn(propertyId)
            .setRenderer(new ComponentRenderer())
            .setEditorField(new ComponentCustomField());
}