package com.vaadin.tests.dd;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import com.vaadin.event.DataBoundTransferable;
import com.vaadin.event.Transferable;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.event.dd.DropHandler;
import com.vaadin.event.dd.acceptcriteria.AcceptAll;
import com.vaadin.event.dd.acceptcriteria.AcceptCriterion;
import com.vaadin.server.StreamVariable;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.ui.AbsoluteLayout;
import com.vaadin.ui.AbsoluteLayout.ComponentPosition;
import com.vaadin.ui.Component;
import com.vaadin.ui.DragAndDropWrapper;
import com.vaadin.ui.Html5File;
import com.vaadin.ui.Label;
/**
* replacement for a proto class to keep tests working
*/
public class DragDropPane extends DragAndDropWrapper implements DropHandler {
private AbsoluteLayout root;
private AcceptCriterion crit;
public DragDropPane() {
super(new AbsoluteLayout());
root = (AbsoluteLayout) getCompositionRoot();
setDropHandler(this);
setDragStartMode(DragStartMode.COMPONENT);
}
public void addComponent(Component c) {
root.addComponent(c);
}
/**
*
*/
private static final long serialVersionUID = 1L;
public void addComponent(Component l, String string) {
root.addComponent(l, string);
}
public void setAcceptCriterion(AcceptCriterion crit) {
this.crit = crit;
}
@Override
public void drop(DragAndDropEvent event) {
WrapperTargetDetails ed = (WrapperTargetDetails) event
.getTargetDetails();
Transferable ctr = event.getTransferable();
// use "component" (from DragDropPane) if available, else take
// the source component
Component component = null;
if (ctr instanceof WrapperTransferable) {
component = ((WrapperTransferable) ctr).getDraggedComponent();
} else if (ctr instanceof DataBoundTransferable) {
// Item has been dragged, construct a Label from
// Item id
Label l = new Label();
l.setSizeUndefined();
l.setValue("ItemId : " + ((DataBoundTransferable) ctr).getItemId());
component = l;
}
if (component != null) {
if (component.getParent() != root) {
root.addComponent(component);
Integer left = ed.getAbsoluteLeft();
Integer top = ed.getAbsoluteTop();
MouseEventDetails eventDetails = ed.getMouseEvent();
int clientX = eventDetails.getClientX();
int clientY = eventDetails.getClientY();
try {
root.getPosition(component).setTopValue(
Float.valueOf(clientY - top));
root.getPosition(component).setLeftValue(
Float.valueOf(clientX - left));
} catch (Exception e) {
}
} else {
// drag started and ended inside the this Pane
MouseEventDetails start = ((WrapperTransferable) event
.getTransferable()).getMouseDownEvent();
MouseEventDetails eventDetails = ed.getMouseEvent();
int deltaX = eventDetails.getClientX() - start.getClientX();
int deltaY = eventDetails.getClientY() - start.getClientY();
ComponentPosition p = root.getPosition(component);
p.setTopValue(p.getTopValue() + deltaY);
p.setLeftValue(p.getLeftValue() + deltaX);
}
}
else {
// drag coming outside of Vaadin
WrapperTransferable wtr = (WrapperTransferable) ctr;
String object = wtr.getText();
// String html = wtr.getHtml();
// String url = (String) ctr.getData("Url");
final Label l = new Label();
l.setCaption("Generated from HTML5 drag:");
if (object != null) {
if (object.length() > 80) {
object = object.substring(0, 79);
}
l.setValue(object);
} else {
l.setValue("HTML5 dd");
}
Html5File[] files = wtr.getFiles();
if (files != null) {
for (Html5File html5File : files) {
l.setCaption(html5File.getFileName());
html5File.setStreamVariable(new StreamVariable() {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
@Override
public OutputStream getOutputStream() {
return byteArrayOutputStream;
}
@Override
public boolean listenProgress() {
return false;
}
@Override
public void onProgress(StreamingProgressEvent event) {
}
@Override
public void streamingStarted(StreamingStartEvent event) {
}
@Override
public void streamingFinished(StreamingEndEvent event) {
l.setValue((new String(byteArrayOutputStream
.toByteArray()).substring(0, 80) + "..."));
}
@Override
public void streamingFailed(StreamingErrorEvent event) {
}
@Override
public boolean isInterrupted() {
return false;
}
});
}
}
l.setSizeUndefined();
root.addComponent(l);
}
return;
}
@Override
public AcceptCriterion getAcceptCriterion() {
return crit != null ? crit : AcceptAll.get();
}
}