Drag Handle

Description

This example showcases how to add a DragHandle for nodes, allowing users to move them easily within Angular and Foblex Flow.

The fDragHandle directive can be applied to any HTML element inside a node fNode. It defines which part of the node should respond to drag gestures. This enables you to:

• Make the entire node draggable
• Limit dragging to a specific element like an icon, header, or image
• Build flexible and intuitive drag behavior for custom UIs

How to Handle Position Changes

To track and persist node positions, you should handle the fNodePositionChange event emitted by each node. This event returns a new position of the node { x: number, y: number } whenever it is moved.

You can use this event to:

• Save the new position to a model or store
• Sync changes to a backend or local storage
• Trigger layout adjustments or constraints

In addition, the fMoveNodes event emitted by <f-flow> is triggered whenever one or more nodes are moved, including single-node moves. It provides an array of updated nodes, each with its new position, making it ideal for:

• Tracking bulk movements (e.g., group drag)
• Implementing undo/redo systems
• Managing external logic like snapping or alignment

Example