package com.vaadin.tests.components.table;
import java.util.Random;
import com.vaadin.annotations.AutoGenerated;
import com.vaadin.data.util.BeanContainer;
import com.vaadin.event.ShortcutAction.KeyCode;
import com.vaadin.server.ClassResource;
import com.vaadin.server.Resource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.AbsoluteLayout;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.ColumnGenerator;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
/**
* This test cannot be automated. http://dev.vaadin.com/ticket/6160, base code
* by user radosdesign.
*
* The test fails if even occasionally empty rows appear in the table. A
* relatively good way to get them (before the fix) is to wait for the page to
* load, move the scrollbar down, press 'R' before the rows have time to be
* rendered, and then move the scrollbar up when no rows have been rendered yet.
* After this, when you scroll down slowly there may be empty rows. This doesn't
* happen always, and you may need to force the threads slower to get it to
* happen at all. On a slow 32-bit Windows 7 with Chrome version 22.0.1229.94 m
* (no GWT dev mode) this test has managed to reproduce the problem maybe nine
* times out of ten.
*
* @author Anna Koskinen / Vaadin Oy
*
*/
public class EmptyRowsWhenScrolling extends UI {
@Override
public void init(VaadinRequest request) {
getPage().setTitle("Simpletable Application");
AppView appView = new AppView(this);
setContent(appView);
addAction(new Button.ClickShortcut(appView.getBtnRefreshTable(),
KeyCode.R));
}
private class AppView extends CustomComponent {
@AutoGenerated
private AbsoluteLayout mainLayout;
@AutoGenerated
private VerticalLayout verticalLayout_1;
@AutoGenerated
private Table table;
@AutoGenerated
private HorizontalLayout horizontalLayout_1;
@AutoGenerated
private Button btnRefreshTable;
/*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */
/*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */
/**
* The constructor should first build the main layout, set the
* composition root and then do any custom initialization.
*
* The constructor will not be automatically regenerated by the visual
* editor.
*/
public AppView(final UI application) {
buildMainLayout();
setCompositionRoot(mainLayout);
// Container with sample data
BeanContainer<Integer, SimpleBean> container = new BeanContainer<Integer, SimpleBean>(
SimpleBean.class);
container.setBeanIdProperty("id");
for (int i = 1; i <= 50; ++i) {
container.addBean(new SimpleBean(i, "image",
"Column1 row " + i, "Column2 row " + i, "Column3 row "
+ i, "Column4 row " + i));
}
table.setContainerDataSource(container);
table.setEditable(true);
table.setColumnReorderingAllowed(true);
table.setVisibleColumns(new String[] { "image", "id", "col1",
"col2", "col3", "col4" });
table.addGeneratedColumn("image", new ColumnGenerator() {
@Override
public Object generateCell(Table source, Object itemId,
Object columnId) {
int imgNum = new Random().nextInt(5) + 1;
try {
// Simulate background work
System.out
.println("Generated column for image /com/example/simpletable/img/px50-"
+ imgNum + ".jpg");
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
Resource resource = new ClassResource(
"/com/example/simpletable/img/px50-" + imgNum
+ ".jpg");
Embedded image = new Embedded("", resource);
image.setWidth("50px");
image.setHeight("50px");
image.addClickListener(new com.vaadin.event.MouseEvents.ClickListener() {
@Override
public void click(
com.vaadin.event.MouseEvents.ClickEvent event) {
Notification.show("Image clicked!");
}
});
return image;
}
});
// Refresh table button
getBtnRefreshTable().addClickListener(new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
table.refreshRowCache();
}
});
}
@AutoGenerated
private AbsoluteLayout buildMainLayout() {
// common part: create layout
mainLayout = new AbsoluteLayout();
mainLayout.setImmediate(false);
mainLayout.setWidth("100%");
mainLayout.setHeight("100%");
// top-level component properties
setWidth("100.0%");
setHeight("100.0%");
// verticalLayout_1
verticalLayout_1 = buildVerticalLayout_1();
mainLayout.addComponent(verticalLayout_1, "top:0.0px;left:0.0px;");
return mainLayout;
}
@AutoGenerated
private VerticalLayout buildVerticalLayout_1() {
// common part: create layout
verticalLayout_1 = new VerticalLayout();
verticalLayout_1.setImmediate(false);
verticalLayout_1.setWidth("100.0%");
verticalLayout_1.setHeight("100.0%");
verticalLayout_1.setMargin(false);
// horizontalLayout_1
horizontalLayout_1 = buildHorizontalLayout_1();
verticalLayout_1.addComponent(horizontalLayout_1);
// table_1
table = new Table();
table.setImmediate(false);
table.setWidth("100.0%");
table.setHeight("100.0%");
verticalLayout_1.addComponent(table);
verticalLayout_1.setExpandRatio(table, 1.0f);
return verticalLayout_1;
}
@AutoGenerated
private HorizontalLayout buildHorizontalLayout_1() {
// common part: create layout
horizontalLayout_1 = new HorizontalLayout();
horizontalLayout_1.setImmediate(false);
horizontalLayout_1.setWidth("100.0%");
horizontalLayout_1.setHeight("-1px");
horizontalLayout_1.setMargin(false);
// btnRefreshTable
setBtnRefreshTable(new Button());
getBtnRefreshTable().setCaption("Reload table row cache");
getBtnRefreshTable().setImmediate(false);
getBtnRefreshTable().setWidth("-1px");
getBtnRefreshTable().setHeight("-1px");
horizontalLayout_1.addComponent(getBtnRefreshTable());
horizontalLayout_1.setComponentAlignment(getBtnRefreshTable(),
new Alignment(33));
return horizontalLayout_1;
}
public Button getBtnRefreshTable() {
return btnRefreshTable;
}
public void setBtnRefreshTable(Button btnRefreshTable) {
this.btnRefreshTable = btnRefreshTable;
}
}
protected class SimpleBean {
private int id;
private String image;
private String col1;
private String col2;
private String col3;
private String col4;
public SimpleBean(int id, String image, String col1, String col2,
String col3, String col4) {
super();
this.id = id;
this.image = image;
this.col1 = col1;
this.col2 = col2;
this.col3 = col3;
this.col4 = col4;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getCol1() {
return col1;
}
public void setCol1(String col1) {
this.col1 = col1;
}
public String getCol2() {
return col2;
}
public void setCol2(String col2) {
this.col2 = col2;
}
public String getCol3() {
return col3;
}
public void setCol3(String col3) {
this.col3 = col3;
}
public String getCol4() {
return col4;
}
public void setCol4(String col4) {
this.col4 = col4;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
}