/**
* Handle a drop from another layout
*
* @param event The drag and drop event
*/
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
AbsoluteLayoutTargetDetails details = (AbsoluteLayoutTargetDetails) event.getTargetDetails();
LayoutBoundTransferable transferable = (LayoutBoundTransferable) event.getTransferable();
Component component = transferable.getComponent();
Component source = event.getTransferable().getSourceComponent();
DDAbsoluteLayout layout = (DDAbsoluteLayout) details.getTarget();
int leftPixelPosition = details.getRelativeLeft();
int topPixelPosition = details.getRelativeTop();
// Check that we are not dragging an outer layout into an
// inner
// layout
Component parent = source.getParent();
while (parent != null) {
parent = parent.getParent();
}
// remove component from source using filter
if (source instanceof ComponentContainer) {
ComponentContainer sourceLayout = (ComponentContainer) source;
sourceLayout.removeComponent(component);
}
// Add component to absolute layout
layout.addComponent(
component, "left:" + leftPixelPosition + "px;top:" + topPixelPosition + "px");
}
@Override
public Set<HasComponents> apply(Set<? extends Component> cs) {
Set<HasComponents> result = Util.set();
for (Component c : cs) {
if (c.getParent() != null) {
result.add(c.getParent());
}
}
return result;
}
@Override
public void replaceComponent(Component oldComponent, Component newComponent) {
// Ignore if component is replaced with itself
if (oldComponent == newComponent) {
return;
}
// Remove new component from children to allow position calculations
if (newComponent.getParent() == this) {
removeComponent(newComponent);
}
// Resolve column
ColumnLayoutState.ColumnState column = findColumn(oldComponent);
if (column == null) {
throw new IllegalArgumentException("Old component not found");
}
// Resolve position inside column
int index = column.children.indexOf(oldComponent);
// Remove old and add new to same position in column
removeComponent(oldComponent);
addComponent(newComponent, column, index);
}
@Override
public Set<HasComponents> apply(Set<? extends Component> cs) {
Set<HasComponents> result = Util.set();
for (Component c : cs) {
HasComponents parent = c.getParent();
while (parent != null) {
result.add(parent);
parent = parent.getParent();
}
}
return result;
}
private void setLayout(Layout newLayout) {
if (layout == null) {
layoutParent.addComponent(newLayout, 0);
} else {
layoutParent.replaceComponent(layout, newLayout);
}
layout = newLayout;
for (Component c : components) {
if (c.getParent() != layout) {
layout.addComponent(c);
}
}
}
@Override
public Iterator<Component> iterator() {
Set<Component> children = new HashSet<Component>();
if (visibleComponents != null) {
children.addAll(visibleComponents);
}
if (initDone) {
for (Object key : columnIdToFilterMap.keySet()) {
Component filter = columnIdToFilterMap.get(key);
if (equals(filter.getParent())) {
children.add(filter);
}
}
}
return children.iterator();
}
@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;
}
