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Vaadin server-push, data binding and validators (#2283)

This commit is contained in:
Jesus Boadas 2017-07-18 19:46:02 -04:00 committed by maibin
parent aba59e88d9
commit a24e442731
3 changed files with 112 additions and 14 deletions
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4
libraries/pom.xml
View File

@ -476,6 +476,10 @@
<groupId>com.vaadin</groupId>
<artifactId>vaadin-themes</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-push</artifactId>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>

20
libraries/src/main/java/com/baeldung/vaadin/BindData.java Normal file
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@ -0,0 +1,20 @@
package com.baeldung.vaadin;
public class BindData {
private String bindName;
public BindData(String bindName){
this.bindName = bindName;
}
public String getBindName() {
return bindName;
}
public void setBindName(String bindName) {
this.bindName = bindName;
}
}

102
libraries/src/main/java/com/baeldung/vaadin/VaadinUI.java
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@ -1,7 +1,18 @@
package com.baeldung.vaadin;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.servlet.annotation.WebServlet;
import com.vaadin.annotations.Push;
import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.data.Validator.InvalidValueException;
import com.vaadin.data.fieldgroup.BeanFieldGroup;
import com.vaadin.data.validator.StringLengthValidator;
import com.vaadin.server.ExternalResource;
import com.vaadin.server.FontAwesome;
import com.vaadin.server.VaadinRequest;
@ -29,14 +40,14 @@ import com.vaadin.ui.TwinColSelect;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import javax.servlet.annotation.WebServlet;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@SuppressWarnings("serial")
@Push
@Theme("mytheme")
public class VaadinUI extends UI {
private Label currentTime;
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
protected void init(VaadinRequest vaadinRequest) {
final VerticalLayout verticalLayout = new VerticalLayout();
@ -61,8 +72,7 @@ public class VaadinUI extends UI {
label.setCaption("Label");
gridLayout.addComponent(label);
final Link link = new Link("Baeldung",
new ExternalResource("http://www.baeldung.com/"));
final Link link = new Link("Baeldung", new ExternalResource("http://www.baeldung.com/"));
link.setId("Link");
link.setTargetName("_blank");
gridLayout.addComponent(link);
@ -118,28 +128,23 @@ public class VaadinUI extends UI {
smallButton.addStyleName("small");
buttonLayout.addComponent(smallButton);
Button largeButton = new Button("Large Button");
largeButton.addStyleName("large");
buttonLayout.addComponent(largeButton);
Button hugeButton = new Button("Huge Button");
hugeButton.addStyleName("huge");
buttonLayout.addComponent(hugeButton);
Button disabledButton = new Button("Disabled Button");
disabledButton.setDescription("This button cannot be clicked");
disabledButton.setEnabled(false);
buttonLayout.addComponent(disabledButton);
Button dangerButton = new Button("Danger Button");
dangerButton.addStyleName("danger");
buttonLayout.addComponent(dangerButton);
Button friendlyButton = new Button("Friendly Button");
friendlyButton.addStyleName("friendly");
buttonLayout.addComponent(friendlyButton);
@ -171,8 +176,7 @@ public class VaadinUI extends UI {
final CheckBox checkbox = new CheckBox("CheckBox");
checkbox.setValue(true);
checkbox.addValueChangeListener(e ->
checkbox.setValue(!checkbox.getValue()));
checkbox.addValueChangeListener(e -> checkbox.setValue(!checkbox.getValue()));
formLayout.addComponent(checkbox);
List<String> numbers = new ArrayList<String>();
@ -204,12 +208,62 @@ public class VaadinUI extends UI {
panel.setContent(grid);
panel.setSizeUndefined();
Panel serverPushPanel = new Panel("Server Push");
FormLayout timeLayout = new FormLayout();
timeLayout.setSpacing(true);
timeLayout.setMargin(true);
currentTime = new Label("No TIME...");
timeLayout.addComponent(currentTime);
serverPushPanel.setContent(timeLayout);
serverPushPanel.setSizeUndefined();
new ServerPushThread().start();
FormLayout dataBindingLayout = new FormLayout();
dataBindingLayout.setSpacing(true);
dataBindingLayout.setMargin(true);
BindData bindData = new BindData("BindData");
BeanFieldGroup beanFieldGroup = new BeanFieldGroup(BindData.class);
beanFieldGroup.setItemDataSource(bindData);
TextField bindedTextField = (TextField) beanFieldGroup.buildAndBind("BindName", "bindName");
bindedTextField.setWidth("250px");
dataBindingLayout.addComponent(bindedTextField);
FormLayout validatorLayout = new FormLayout();
validatorLayout.setSpacing(true);
validatorLayout.setMargin(true);
HorizontalLayout textValidatorLayout = new HorizontalLayout();
textValidatorLayout.setSpacing(true);
textValidatorLayout.setMargin(true);
TextField stringValidator = new TextField();
stringValidator.setNullSettingAllowed(true);
stringValidator.setNullRepresentation("");
stringValidator.addValidator(new StringLengthValidator("String must have 2-5 characters lenght", 2, 5, true));
stringValidator.setValidationVisible(false);
textValidatorLayout.addComponent(stringValidator);
Button buttonStringValidator = new Button("Validate String");
buttonStringValidator.addClickListener(e -> {
try {
stringValidator.setValidationVisible(false);
stringValidator.validate();
} catch (InvalidValueException err) {
stringValidator.setValidationVisible(true);
}
});
textValidatorLayout.addComponent(buttonStringValidator);
validatorLayout.addComponent(textValidatorLayout);
verticalLayout.addComponent(gridLayout);
verticalLayout.addComponent(richTextPanel);
verticalLayout.addComponent(horizontalLayout);
verticalLayout.addComponent(formLayout);
verticalLayout.addComponent(twinColSelect);
verticalLayout.addComponent(panel);
verticalLayout.addComponent(serverPushPanel);
verticalLayout.addComponent(dataBindingLayout);
verticalLayout.addComponent(validatorLayout);
setContent(verticalLayout);
}
@ -217,4 +271,24 @@ public class VaadinUI extends UI {
@VaadinServletConfiguration(ui = VaadinUI.class, productionMode = false)
public static class MyUIServlet extends VaadinServlet {
}
class ServerPushThread extends Thread {
@Override
public void run() {
try {
while (true) {
Thread.sleep(1000);
access(new Runnable() {
@Override
public void run() {
currentTime.setValue("Current Time : " + Instant.now());
}
});
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}