/**

* dd-manager.ts 12.6.0

* Copyright (c) 2021-2025 Alain Dumesny - see GridStack root license

*/

import { DDDraggable } from './dd-draggable';

import { DDDroppable } from './dd-droppable';

import { DDResizable } from './dd-resizable';

/**

* Global state manager for all Drag & Drop instances.

*

* This class maintains shared state across all drag & drop operations,

* ensuring proper coordination between multiple grids and drag/drop elements.

* All properties are static to provide global access throughout the DD system.

*/

export class DDManager {

/**

* Controls drag operation pausing behavior.

* If set to true or a number (milliseconds), dragging placement and collision

* detection will only happen after the user pauses movement.

* This improves performance during rapid mouse movements.

*/

public static pauseDrag: boolean | number;

/**

* Flag indicating if a mouse down event was already handled.

* Prevents multiple handlers from processing the same mouse event.

*/

public static mouseHandled: boolean;

/**

* Reference to the element currently being dragged.

* Used to track the active drag operation across the system.

*/

public static dragElement: DDDraggable;

/**

* Reference to the drop target element currently under the cursor.

* Used to handle drop operations and hover effects.

*/

public static dropElement: DDDroppable;

/**

* Reference to the element currently being resized.

* Helps ignore nested grid resize handles during resize operations.

*/

public static overResizeElement: DDResizable;

}