import { Vector2 } from "../struct";
export interface MouseContextCallback {
    (pos: MouseHandlerEvent): void;
}
export interface MouseHandlerEvent {
    x: number;
    y: number;
    button: number;
    type: "mousedown" | "mouseup";
}
/**
 * Represents a global mouse. Will likely only create one per app.
 *
 * You can bind/switch MouseContexts to the MouseHandler
 * to change input 'modes'.
 */
export declare class MouseHandler {
    private x;
    private y;
    private context?;
    private _isDown;
    /** Creates a new Mouse Handler */
    constructor();
    private onMouseDownEvent;
    private onMouseUpEvent;
    private onMouseUpdateEvent;
    /**
     * Returns true if the given mouse button is down.
     * @param mouseButton number - Default 0 for left click.
     */
    isMouseDown(mouseButton?: number): boolean;
    /**
     * Gets the current position of the mouse
     * @returns Vector2
     */
    getPos(): Vector2;
    /**
     * Sets the active mouse context
     * @param context MouseContext
     * @returns this
     */
    setContext(context: MouseContext): this;
    /**
     * Clears the active mouse context
     * @returns this
     */
    clearContext(): this;
}
/**
 * MouseContext represents a single 'mode' of the game's mouse controls.
 * For instance, you might have one context to use for the overworld, another for
 * menus, another for inventory, etc.
 *
 * You can set the active context through a MouseHandler's setContext(ctx)
 * and clearContext() methods.
 *
 *
 * You can register multiple callbacks for onUp/onDown.
 */
export declare class MouseContext {
    private _onDown;
    private _onUp;
    /**
     * Registers a callback for a mousedown event.
     * @param callback - The function to call on mousedown
     * @return this
     */
    onMouseDown(callback: MouseContextCallback): this;
    /**
     * Registers a callback for a mouseup event.
     * @param callback - The function to call on mousedown
     * @return this
     */
    onMouseUp(callback: MouseContextCallback): this;
    /**
     * Clears a registered function for mousedown. If no callback is provided will clear all.
     * @param callback - The callback to clear.
     */
    clearMouseDown(callback?: MouseContextCallback): this;
    /**
     * Clears a registered function for mouseup. If no callback is provided will clear all.
     * @param callback - The callback to clear.
     */
    clearMouseUp(callback?: MouseContextCallback): this;
    /**
     * Invokes a registered callback for mousedown
     * @param e MouseHandlerEvent
     */
    callOnMouseDown(e: MouseHandlerEvent): void;
    /**
     * Invokes a registered callback for mouseup
     * @param e MouseHandlerEvent
     */
    callOnMouseUp(e: MouseHandlerEvent): void;
}