Examples with DeleteTreeItemSuccessPayload org.eclipse.sirius.components.collaborative.trees.dto.DeleteTreeItemSuccessPayload used on opensource projects

Example 1 with DeleteTreeItemSuccessPayload

use of org.eclipse.sirius.components.collaborative.trees.dto.DeleteTreeItemSuccessPayload in project sirius-components by eclipse-sirius.

the class DeleteTreeItemEventHandler method handle.

@Override
public void handle(One<IPayload> payloadSink, Many<ChangeDescription> changeDescriptionSink, IEditingContext editingContext, Tree tree, ITreeInput treeInput) {
    this.counter.increment();
    String message = this.messageService.invalidInput(treeInput.getClass().getSimpleName(), DeleteTreeItemInput.class.getSimpleName());
    IPayload payload = new ErrorPayload(treeInput.getId(), message);
    ChangeDescription changeDescription = new ChangeDescription(ChangeKind.NOTHING, treeInput.getRepresentationId(), treeInput);
    if (treeInput instanceof DeleteTreeItemInput) {
        DeleteTreeItemInput input = (DeleteTreeItemInput) treeInput;
        var optionalTreeItem = this.treeQueryService.findTreeItem(tree, input.getTreeItemId());
        if (optionalTreeItem.isPresent()) {
            TreeDescription treeDescription = this.explorerDescriptionProvider.getDescription();
            TreeItem treeItem = optionalTreeItem.get();
            VariableManager variableManager = new VariableManager();
            variableManager.put(IEditingContext.EDITING_CONTEXT, editingContext);
            variableManager.put(TreeItem.SELECTED_TREE_ITEM, treeItem);
            var status = treeDescription.getDeleteHandler().apply(variableManager);
            if (status instanceof Success) {
                Success success = (Success) status;
                changeDescription = new ChangeDescription(success.getChangeKind(), treeInput.getRepresentationId(), treeInput, success.getParameters());
                payload = new DeleteTreeItemSuccessPayload(treeInput.getId());
            } else if (status instanceof Failure) {
                payload = new ErrorPayload(treeInput.getId(), ((Failure) status).getMessage());
            }
        }
    }
    changeDescriptionSink.tryEmitNext(changeDescription);
    payloadSink.tryEmitValue(payload);
}