diff options
Diffstat (limited to 'src/com/vaadin/terminal/gwt/server/DragAndDropService.java')
| -rw-r--r-- | src/com/vaadin/terminal/gwt/server/DragAndDropService.java | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/src/com/vaadin/terminal/gwt/server/DragAndDropService.java b/src/com/vaadin/terminal/gwt/server/DragAndDropService.java deleted file mode 100644 index efb5666efa..0000000000 --- a/src/com/vaadin/terminal/gwt/server/DragAndDropService.java +++ /dev/null @@ -1,313 +0,0 @@ -/* -@VaadinApache2LicenseForJavaFiles@ - */ -package com.vaadin.terminal.gwt.server; - -import java.io.PrintWriter; -import java.util.Collection; -import java.util.Collections; -import java.util.List; -import java.util.Map; -import java.util.logging.Logger; - -import com.vaadin.event.Transferable; -import com.vaadin.event.TransferableImpl; -import com.vaadin.event.dd.DragAndDropEvent; -import com.vaadin.event.dd.DragSource; -import com.vaadin.event.dd.DropHandler; -import com.vaadin.event.dd.DropTarget; -import com.vaadin.event.dd.TargetDetails; -import com.vaadin.event.dd.TargetDetailsImpl; -import com.vaadin.event.dd.acceptcriteria.AcceptCriterion; -import com.vaadin.shared.communication.SharedState; -import com.vaadin.shared.ui.dd.DragEventType; -import com.vaadin.terminal.Extension; -import com.vaadin.terminal.PaintException; -import com.vaadin.terminal.VariableOwner; -import com.vaadin.terminal.gwt.client.ui.dd.VDragAndDropManager; -import com.vaadin.ui.Component; -import com.vaadin.ui.Root; - -public class DragAndDropService implements VariableOwner, ClientConnector { - - private int lastVisitId; - - private boolean lastVisitAccepted = false; - - private DragAndDropEvent dragEvent; - - private final AbstractCommunicationManager manager; - - private AcceptCriterion acceptCriterion; - - public DragAndDropService(AbstractCommunicationManager manager) { - this.manager = manager; - } - - @Override - public void changeVariables(Object source, Map<String, Object> variables) { - Object owner = variables.get("dhowner"); - - // Validate drop handler owner - if (!(owner instanceof DropTarget)) { - getLogger() - .severe("DropHandler owner " + owner - + " must implement DropTarget"); - return; - } - // owner cannot be null here - - DropTarget dropTarget = (DropTarget) owner; - lastVisitId = (Integer) variables.get("visitId"); - - // request may be dropRequest or request during drag operation (commonly - // dragover or dragenter) - boolean dropRequest = isDropRequest(variables); - if (dropRequest) { - handleDropRequest(dropTarget, variables); - } else { - handleDragRequest(dropTarget, variables); - } - - } - - /** - * Handles a drop request from the VDragAndDropManager. - * - * @param dropTarget - * @param variables - */ - private void handleDropRequest(DropTarget dropTarget, - Map<String, Object> variables) { - DropHandler dropHandler = (dropTarget).getDropHandler(); - if (dropHandler == null) { - // No dropHandler returned so no drop can be performed. - getLogger().fine( - "DropTarget.getDropHandler() returned null for owner: " - + dropTarget); - return; - } - - /* - * Construct the Transferable and the DragDropDetails for the drop - * operation based on the info passed from the client widgets (drag - * source for Transferable, drop target for DragDropDetails). - */ - Transferable transferable = constructTransferable(dropTarget, variables); - TargetDetails dropData = constructDragDropDetails(dropTarget, variables); - DragAndDropEvent dropEvent = new DragAndDropEvent(transferable, - dropData); - if (dropHandler.getAcceptCriterion().accept(dropEvent)) { - dropHandler.drop(dropEvent); - } - } - - /** - * Handles a drag/move request from the VDragAndDropManager. - * - * @param dropTarget - * @param variables - */ - private void handleDragRequest(DropTarget dropTarget, - Map<String, Object> variables) { - lastVisitId = (Integer) variables.get("visitId"); - - acceptCriterion = dropTarget.getDropHandler().getAcceptCriterion(); - - /* - * Construct the Transferable and the DragDropDetails for the drag - * operation based on the info passed from the client widgets (drag - * source for Transferable, current target for DragDropDetails). - */ - Transferable transferable = constructTransferable(dropTarget, variables); - TargetDetails dragDropDetails = constructDragDropDetails(dropTarget, - variables); - - dragEvent = new DragAndDropEvent(transferable, dragDropDetails); - - lastVisitAccepted = acceptCriterion.accept(dragEvent); - } - - /** - * Construct DragDropDetails based on variables from client drop target. - * Uses DragDropDetailsTranslator if available, otherwise a default - * DragDropDetails implementation is used. - * - * @param dropTarget - * @param variables - * @return - */ - @SuppressWarnings("unchecked") - private TargetDetails constructDragDropDetails(DropTarget dropTarget, - Map<String, Object> variables) { - Map<String, Object> rawDragDropDetails = (Map<String, Object>) variables - .get("evt"); - - TargetDetails dropData = dropTarget - .translateDropTargetDetails(rawDragDropDetails); - - if (dropData == null) { - // Create a default DragDropDetails with all the raw variables - dropData = new TargetDetailsImpl(rawDragDropDetails, dropTarget); - } - - return dropData; - } - - private boolean isDropRequest(Map<String, Object> variables) { - return getRequestType(variables) == DragEventType.DROP; - } - - private DragEventType getRequestType(Map<String, Object> variables) { - int type = (Integer) variables.get("type"); - return DragEventType.values()[type]; - } - - @SuppressWarnings("unchecked") - private Transferable constructTransferable(DropTarget dropHandlerOwner, - Map<String, Object> variables) { - final Component sourceComponent = (Component) variables - .get("component"); - - variables = (Map<String, Object>) variables.get("tra"); - - Transferable transferable = null; - if (sourceComponent != null && sourceComponent instanceof DragSource) { - transferable = ((DragSource) sourceComponent) - .getTransferable(variables); - } - if (transferable == null) { - transferable = new TransferableImpl(sourceComponent, variables); - } - - return transferable; - } - - @Override - public boolean isEnabled() { - return isConnectorEnabled(); - } - - @Override - public boolean isImmediate() { - return true; - } - - void printJSONResponse(PrintWriter outWriter) throws PaintException { - if (isDirty()) { - - outWriter.print(", \"dd\":"); - - JsonPaintTarget jsonPaintTarget = new JsonPaintTarget(manager, - outWriter, false); - jsonPaintTarget.startTag("dd"); - jsonPaintTarget.addAttribute("visitId", lastVisitId); - if (acceptCriterion != null) { - jsonPaintTarget.addAttribute("accepted", lastVisitAccepted); - acceptCriterion.paintResponse(jsonPaintTarget); - } - jsonPaintTarget.endTag("dd"); - jsonPaintTarget.close(); - lastVisitId = -1; - lastVisitAccepted = false; - acceptCriterion = null; - dragEvent = null; - } - } - - private boolean isDirty() { - if (lastVisitId > 0) { - return true; - } - return false; - } - - @Override - public SharedState getState() { - // TODO Auto-generated method stub - return null; - } - - @Override - public String getConnectorId() { - return VDragAndDropManager.DD_SERVICE; - } - - @Override - public boolean isConnectorEnabled() { - // Drag'n'drop can't be disabled - return true; - } - - @Override - public List<ClientMethodInvocation> retrievePendingRpcCalls() { - return null; - } - - @Override - public RpcManager getRpcManager(Class<?> rpcInterface) { - // TODO Use rpc for drag'n'drop - return null; - } - - @Override - public Class<? extends SharedState> getStateType() { - return SharedState.class; - } - - @Override - public void requestRepaint() { - // TODO Auto-generated method stub - - } - - @Override - public ClientConnector getParent() { - // TODO Auto-generated method stub - return null; - } - - @Override - public void requestRepaintAll() { - // TODO Auto-generated method stub - - } - - @Override - public void setParent(ClientConnector parent) { - // TODO Auto-generated method stub - - } - - @Override - public void attach() { - // TODO Auto-generated method stub - - } - - @Override - public void detach() { - // TODO Auto-generated method stub - - } - - @Override - public Collection<Extension> getExtensions() { - // TODO Auto-generated method stub - return Collections.emptySet(); - } - - @Override - public void removeExtension(Extension extension) { - // TODO Auto-generated method stub - } - - private Logger getLogger() { - return Logger.getLogger(DragAndDropService.class.getName()); - } - - @Override - public Root getRoot() { - return null; - } -} |