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package com.vaadin.tests.dnd;
import com.vaadin.annotations.Widgetset;
import com.vaadin.server.Page;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.ui.Button;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Layout;
import com.vaadin.ui.dnd.DragSourceExtension;
import com.vaadin.ui.dnd.DropTargetExtension;
@Widgetset("com.vaadin.DefaultWidgetSet")
public class DraggableButton extends AbstractTestUIWithLog {
@Override
protected void setup(VaadinRequest request) {
Button draggableButton = new Button("Draggable Button",
event -> log("clicked draggable button"));
DragSourceExtension<Button> dragSourceExtension = new DragSourceExtension<>(
draggableButton);
dragSourceExtension.setDataTransferText(
"If you see this, the drop was successful");
Label dropTarget = new Label("Drop Here");
dropTarget.addStyleName("drop-target");
DropTargetExtension<Label> dropTargetExtension = new DropTargetExtension<>(
dropTarget);
dropTargetExtension
.addDropListener(event -> log(event.getDataTransferText()));
Layout layout = new HorizontalLayout();
layout.addComponents(draggableButton, dropTarget, new Button(
"another button", event -> log("click on another button")));
addComponent(layout);
// Add styling
setStyle();
}
private void setStyle() {
Page.Styles styles = Page.getCurrent().getStyles();
styles.add(".drop-target {" + "width: 150px;" + "height: 100px;"
+ "border: 1px solid black;" + "border-radius: 4px;"
+ "text-align: center;" + "}");
styles.add(".v-label-drag-center {" + "border-style: dashed;" + "}");
}
@Override
protected String getTestDescription() {
return "Test if Button is draggable, and it won't steal all other clicks";
}
}
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