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@oge-ui/gantt-engine

v1.1.6

Published

Framework-free engine behind the OGE UI Gantt chart, shared by the Angular and React render layers: task-tree model with field mapping and summary roll-ups, calendar-true time scales, forward auto-scheduling on work calendars, the critical-path pass, orth

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Links

Git

Maintainers

kaya2mkaya2m

Keywords

ganttgantt-chartproject-managementschedulingcritical-pathheadlesstypescript

Readme

@oge-ui/gantt-engine

The framework-free engine behind the OGE UI Gantt chart. Plain TypeScript, shipped as ESM + CJS, with no dependency on Angular, React or any other framework — the one implementation both render layers run:

You normally do not install this package yourself: each render package depends on it and re-exports its public types, so npm install @oge-ui/gantt or npm install @oge-ui/react-gantt is the whole setup.

Commercial. Like the Gantt packages themselves, this engine is source-available commercial software — free for evaluation and development, paid for production. See LICENSE and https://www.ogeui.com/license.

What's inside

  • The kernel — the task-tree model with *Expr field mapping (names, dotted paths, getters), summary roll-ups and storage-shape-preserving write-back (buildGanttTasks, ganttTaskPatch); dependency links with cycle detection; calendar-true hour/day/week/month time scales; forward auto-scheduling honoring FS/SS/FF/SF on work calendars; the critical-path backward pass; orthogonal dependency routing; resource workload segments; the move/resize/progress gesture math.
  • OgeGanttCore — the whole controller: working-set stores and snapshot undo/redo, the derived bars/arrows/scale/workload view models, row virtualization, the cancelable editing pipelines (task and dependency CRUD, indent/outdent, auto-scheduling), the treegrid keyboard map, the pointer gestures with Escape-cancel (on @oge-ui/behavior's shared beginPointerGesture), the weekend-day resolution, the context-menu model and every label and live-region announcement. It takes an OgeReactivityAdapter from @oge-ui/behavior — Angular backs it with signals, React with a versioned store.
  • Config and messages — OGE_DEFAULT_GANTT_CONFIG, OGE_DEFAULT_GANTT_MESSAGES and resolveGanttConfig, which both provideOgeGanttConfig() and <OgeGanttConfigProvider> resolve through.
  • Export builders — separate entry points with optional peers, so only an app that exports pays for the library:
    • @oge-ui/gantt-engine/export-excel → buildGanttExcelWorkbook (exceljs),
    • @oge-ui/gantt-engine/export-pdf → buildGanttPdfDocument (jspdf; Unicode text through an OgePdfFont),
    • @oge-ui/gantt-engine/export-image → buildGanttCanvas (no dependency).

Every module has a spec beside it; src/index.spec.ts guards the barrel, which is both render layers' import surface.