Examples with DropNodeCommand org.knime.workbench.editor2.commands.DropNodeCommand used on opensource projects

Example 1 with DropNodeCommand

use of org.knime.workbench.editor2.commands.DropNodeCommand in project knime-core by knime.

the class NewWorkflowContainerEditPolicy method getCreateCommand.

/**
 * {@inheritDoc}
 */
@Override
protected Command getCreateCommand(final CreateRequest request) {
    // point where the command occurred
    // The node/description should be initially located here
    boolean snapToGrid = WorkflowEditor.getActiveEditorSnapToGrid();
    WorkflowRootEditPart workflowPart = (WorkflowRootEditPart) this.getHost();
    if (!Wrapper.wraps(workflowPart.getWorkflowManager(), WorkflowManager.class)) {
        // adding new nodes not supported yet by UI-interfaces and implemenations
        LOGGER.error("Adding new nodes not supported by '" + workflowPart.getWorkflowManager().getClass().getSimpleName() + "'.");
        return null;
    }
    WorkflowManager manager = Wrapper.unwrapWFM(workflowPart.getWorkflowManager());
    if (request instanceof CreateDropRequest) {
        Object obj = request.getNewObject();
        CreateDropRequest cdr = (CreateDropRequest) request;
        if (obj instanceof NodeFactory) {
            return handleNodeDrop(manager, (NodeFactory<? extends NodeModel>) obj, cdr);
        } else if (obj instanceof AbstractExplorerFileStore) {
            AbstractExplorerFileStore fs = (AbstractExplorerFileStore) obj;
            if (AbstractExplorerFileStore.isWorkflowTemplate(fs)) {
                return handleMetaNodeTemplateDrop(manager, cdr, fs);
            }
        } else if (obj instanceof WorkflowPersistor) {
            return handleMetaNodeDrop(manager, (WorkflowPersistor) obj, cdr);
        } else if (obj instanceof ReaderNodeSettings) {
            ReaderNodeSettings settings = (ReaderNodeSettings) obj;
            return new DropNodeCommand(manager, settings.getFactory(), new NodeCreationContext(settings.getUrl()), request.getLocation(), snapToGrid);
        } else {
            LOGGER.error("Illegal drop object: " + obj);
        }
    }
    return null;
}