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Geoman Instance API

The Geoman instance provides the main interface for interacting with the map editing functionality. This documentation covers all public methods available on the Geoman instance.

Installation & Initialization​

import { Geoman, GmOptionsPartial } from '@geoman-io/maplibre-geoman-pro'; // or '@geoman-io/maplibre-geoman-free'


const options: GmOptionsPartial = {
  // configuration options
};

const gm = new Geoman(map, options);

Core Properties​

features​

Access to the Features API for managing map features.

const features = gm.features;

mapAdapter​

Access to the underlying map adapter instance.

const mapAdapter = gm.mapAdapter;

Mode Management Methods​

Draw Modes​

enableDraw​

Enables drawing mode for a specific shape.

gm.enableDraw(shape: DrawModeName): void;

disableDraw​

Disables any active drawing mode.

gm.disableDraw(): void;

toggleDraw​

Toggles drawing mode for a specific shape.

gm.toggleDraw(shape: DrawModeName): void;

drawEnabled​

Checks if drawing mode is enabled for a specific shape.

gm.drawEnabled(shape: DrawModeName): boolean;

Edit Modes​

Global Edit Mode​

gm.enableGlobalEditMode(): void;
gm.disableGlobalEditMode(): void;
gm.toggleGlobalEditMode(): void;
gm.globalEditModeEnabled(): boolean;

Global Drag Mode​

gm.enableGlobalDragMode(): void;
gm.disableGlobalDragMode(): void;
gm.toggleGlobalDragMode(): void;
gm.globalDragModeEnabled(): boolean;

Global Rotate Mode​

gm.enableGlobalRotateMode(): void;
gm.disableGlobalRotateMode(): void;
gm.toggleGlobalRotateMode(): void;
gm.globalRotateModeEnabled(): boolean;

Global Scale Mode​

gm.enableGlobalScaleMode(): void;
gm.disableGlobalScaleMode(): void;
gm.toggleGlobalScaleMode(): void;
gm.globalScaleModeEnabled(): boolean;

Global Copy Mode​

gm.enableGlobalCopyMode(): void;
gm.disableGlobalCopyMode(): void;
gm.toggleGlobalCopyMode(): void;
gm.globalCopyModeEnabled(): boolean;

Global Cut Mode​

gm.enableGlobalCutMode(): void;
gm.disableGlobalCutMode(): void;
gm.toggleGlobalCutMode(): void;
gm.globalCutModeEnabled(): boolean;

Global Split Mode​

gm.enableGlobalSplitMode(): void;
gm.disableGlobalSplitMode(): void;
gm.toggleGlobalSplitMode(): void;
gm.globalSplitModeEnabled(): boolean;

Global Union Mode​

gm.enableGlobalUnionMode(): void;
gm.disableGlobalUnionMode(): void;
gm.toggleGlobalUnionMode(): void;
gm.globalUnionModeEnabled(): boolean;

Global Difference Mode​

gm.enableGlobalDifferenceMode(): void;
gm.disableGlobalDifferenceMode(): void;
gm.toggleGlobalDifferenceMode(): void;
gm.globalDifferenceModeEnabled(): boolean;

Global Line Simplification Mode​

gm.enableGlobalLineSimplificationMode(): void;
gm.disableGlobalLineSimplificationMode(): void;
gm.toggleGlobalLineSimplificationMode(): void;
gm.globalLineSimplificationModeEnabled(): boolean;

Global Lasso Mode​

gm.enableGlobalLassoMode(): void;
gm.disableGlobalLassoMode(): void;
gm.toggleGlobalLassoMode(): void;
gm.globalLassoModeEnabled(): boolean;

Global Removal Mode​

gm.enableGlobalRemovalMode(): void;
gm.disableGlobalRemovalMode(): void;
gm.toggleGlobalRemovalMode(): void;
gm.globalRemovalModeEnabled(): boolean;

Generic Mode Management​

enableMode​

Enables a specific mode for a given action type.

gm.enableMode(actionType: ActionType, modeName: ModeName): void;

disableMode​

Disables a specific mode for a given action type.

gm.disableMode(actionType: ActionType, modeName: ModeName): void;

toggleMode​

Toggles a specific mode for a given action type.

gm.toggleMode(actionType: ActionType, modeName: ModeName): void;

isModeEnabled​

Checks if a specific mode is enabled.

gm.isModeEnabled(actionType: ActionType, modeName: ModeName): boolean;

disableAllModes​

Disables all active modes.

gm.disableAllModes(): void;

Mode Status Methods​

getActiveDrawModes​

Gets array of currently active draw modes.

gm.getActiveDrawModes(): Array<DrawModeName>;

getActiveEditModes​

Gets array of currently active edit modes.

gm.getActiveEditModes(): Array<EditModeName>;

getActiveHelperModes​

Gets array of currently active helper modes.

gm.getActiveHelperModes(): Array<HelperModeName>;

Control Management​

addControls​

Adds the Geoman controls to the map.

gm.addControls(controlsElement?: HTMLElement): Promise<void>;

removeControl​

Removes the Geoman controls from the map.

gm.removeControl(): Promise<void>;

Event Handling​

setGlobalEventsListener​

Sets a global event listener for all Geoman events.

gm.setGlobalEventsListener(callback?: (parameters: GlobalEventsListenerParameters) => void): void;

Types​

ModeName Types​

type DrawModeName = 'marker' | 'circle' | 'circle_marker' | 'text_marker' | 'line' | 
                    'rectangle' | 'polygon' | 'freehand' | 'custom_shape';

type EditModeName = 'drag' | 'change' | 'rotate' | 'scale' | 'copy' | 'cut' | 
                    'split' | 'union' | 'difference' | 'line_simplification' | 
                    'lasso' | 'delete';

type HelperModeName = 'shape_markers' | 'pin' | 'snapping' | 'snap_guides' | 
                      'measurements' | 'auto_trace' | 'geofencing' | 
                      'zoom_to_features' | 'click_to_edit';

Event Types​

type GlobalEventsListenerParameters = {
    type: 'system' | 'converted';
    name: GmFwdEventNameWithPrefix | GmFwdSystemEventNameWithPrefix;
    payload: GmFwdEvent | GMEvent;
};

Example Usage​

// Initialize Geoman
const map = new maplibregl.Map({
  container: 'map',
  style: 'https://maps.geoman.io/styles/basic/style.json'
});

const gm = new Geoman(map);

// Add controls
await gm.addControls();

// Enable drawing mode
gm.enableDraw('polygon');

// Listen to events
gm.setGlobalEventsListener((params) => {
  if (params.name === 'gm:create') {
    console.log('Feature created:', params.payload);
  }
});

// Enable various edit modes
gm.enableGlobalEditMode();
gm.enableGlobalRotateMode();

// Check active modes
const activeModes = gm.getActiveEditModes();
console.log('Active edit modes:', activeModes);

// Disable all modes
gm.disableAllModes();

Available Draw Shapes​

  • marker: Single point marker
  • circle: Circle with radius
  • circle_marker: Fixed-size circle marker
  • text_marker: Text label
  • line: Linear feature
  • rectangle: Rectangular polygon
  • polygon: Free-form polygon
  • freehand: Freehand drawing
  • custom_shape: Custom shape drawing

Available Edit Modes​

  • drag: Move features
  • change: Modify vertices
  • rotate: Rotate features
  • scale: Scale features
  • copy: Copy features
  • cut: Cut features
  • split: Split features
  • union: Combine features
  • difference: Subtract features
  • line_simplification: Simplify lines
  • lasso: Lasso selection
  • delete: Remove features

Available Helper Modes​

  • shape_markers: Show shape markers
  • pin: Pin mode
  • snapping: Enable snapping
  • snap_guides: Show snap guides
  • measurements: Show measurements
  • auto_trace: Auto-trace features
  • geofencing: Geofencing mode
  • zoom_to_features: Zoom to features
  • click_to_edit: Click to edit mode