Available only in PRO Edition

Overlay Extension

The overlay extension contains a set of API methods to simplify work with overlays. Read details about the Overlay extension in the article Extra Elements in Timeline Area.

Methods

The following methods are available via the gantt.ext.overlay object:

addOverlay

• addOverlay (render, id): string | number - adds a new overlay into the Gantt Chart and returns its id
  • render - (Function) - the render function. Takes a container with custom content as a parameter
  • id? - (number | string) - optional, the ID of the overlay

var overlay = gantt.ext.overlay.addOverlay(function(container){});

deleteOverlay

• deleteOverlay (id): boolean - removes an overlay by its id
  • id - (number | string) - the ID of the overlay

gantt.ext.overlay.deleteOverlay(id);

getOverlaysIds

• getOverlaysIds (): Array<string> - returns an array with ids of overlays added into the chart

var ids = gantt.ext.overlay.getOverlaysIds();

refreshOverlay

• refreshOverlay (id): void - repaints the specified overlay.
  • id - (number | string) - the ID of the overlay

gantt.ext.overlay.refreshOverlay(id);

showOverlay

• showOverlay (id): void - shows an overlay by its id.
  • id - (number | string) - the ID of the overlay

gantt.ext.overlay.showOverlay(id);

hideOverlay

• hideOverlay (id): void - hides an overlay by its id
  • id - (number | string) - the ID of the overlay

gantt.ext.overlay.hideOverlay(id);

isOverlayVisible

• isOverlayVisible (id): boolean - checks visibility of the specified overlay. Returns true if the overlay is visible.
  • id - (number | string) - the ID of the overlay

var isVisible = gantt.ext.overlay.isOverlayVisible(id);

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