Examples with ReverseCommand org.kie.workbench.common.stunner.core.command.impl.ReverseCommand used on opensource projects

Example 1 with ReverseCommand

use of org.kie.workbench.common.stunner.core.command.impl.ReverseCommand in project kie-wb-common by kiegroup.

the class PasteSelectionSessionCommand method execute.

@Override
public <V> void execute(final Callback<V> callback) {
    checkNotNull("callback", callback);
    if (clipboardControl.hasElements()) {
        final CompositeCommand.Builder<AbstractCanvasHandler, CanvasViolation> nodesCommandBuilder = createCommandBuilder();
        Counter processedNodesCountdown = new Counter((int) clipboardControl.getElements().stream().filter(element -> element instanceof Node).count());
        // first processing nodes
        nodesCommandBuilder.addCommands(clipboardControl.getElements().stream().filter(element -> element instanceof Node).filter(Objects::nonNull).map(node -> (Node<View<?>, Edge>) node).map(node -> {
            String newParentUUID = getNewParentUUID(node);
            return canvasCommandFactory.cloneNode(node, newParentUUID, calculateNewLocation(node, newParentUUID), cloneNodeCallback(node, processedNodesCountdown));
        }).collect(Collectors.toList()));
        if (Objects.equals(nodesCommandBuilder.size(), 0)) {
            return;
        }
        // Execute the command for cloning nodes
        CommandResult<CanvasViolation> finalResult;
        if (wasNodesDeletedFromGraph()) {
            // in case of a cut command the source elements were deleted from graph, so first undo the command to take node back into canvas
            clipboardControl.getRollbackCommands().forEach(command -> nodesCommandBuilder.addFirstCommand(new ReverseCommand(command)));
            // after the clone execution than delete source elements again
            clipboardControl.getRollbackCommands().forEach(node -> nodesCommandBuilder.addCommand(node));
            finalResult = executeCommands(nodesCommandBuilder, processedNodesCountdown);
        } else {
            // if elements are still on the graph, in case copy command, just execute the clone commands
            finalResult = executeCommands(nodesCommandBuilder, processedNodesCountdown);
        }
        if (CommandUtils.isError(finalResult)) {
            LOGGER.severe("Error pasting selection." + getCanvasViolations(finalResult));
            return;
        }
        fireSelectedElementEvent();
        callback.onSuccess();
        clear();
        // copy the cloned node to the clipboard to allow pasting several times
        copySelectionSessionCommand.execute();
    }
}