A Vaadin add-on wrapping [Bryntum Gantt](https://bryntum.com/products/gantt/). Since Bryntum 8, the Community tier of Bryntum Gantt is MIT licensed and published to the public npm registry, so the add-on works out of the box: the `@bryntum/gantt-community` npm package is pulled in automatically by the Vaadin build, nothing needs to be downloaded manually.  Requirements: Vaadin 25+, Java 21+. ## Usage ```java GanttChart gantt = new GanttChart(); Task launch = gantt.addTask("Launch SaaS Product"); Task webServer = launch.addChild("Setup web server"); Task apache = webServer.addChild("Install Apache", LocalDate.now(), 3); apache.setPercentDone(50); Task ports = webServer.addChild("Configure ports", LocalDate.now(), 2); gantt.addDependency(apache, ports).setLag(1); // Edits made in the browser (drag, resize, cell & task editing) are synchronized // to the Task objects, and rescheduled tasks are reported as well gantt.addTasksChangedListener(e -> e.getTasks().forEach(task -> saveToDb(task))); gantt.addTasksRemovedListener(e -> e.getTasks().forEach(task -> deleteFromDb(task))); add(gantt); ``` Other features of the Java API: * `setColumns(Column.wbs(), Column.name(), Column.startDate(), Column.of("enddate").withWidth(120))` - define grid columns * `setReadOnly(true)` - disable editing * `zoomToFit()`, `scrollToTask(task)`, `setZoomToFitOnLoad(false)` * `addTask`, `removeTask`, `addDependency`, `removeDependency`, `findTask(id)` * `refresh()` - push changes to the browser after modifying `Task`/`Dependency` objects directly The server side model is the source of truth. Adding tasks, creating dependencies and re-parenting tasks in the browser are disabled for now, those are done via the Java API. Note that the Community tier contains a subset of Bryntum Gantt features (see the [feature table](https://www.npmjs.com/package/@bryntum/gantt-community)). Features like the full task editor, critical paths, baselines or PDF export require a commercial Bryntum license and the `-core`/`-enterprise` packages.