import{type TemplateResult,type PropertyValues}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';import type{LyraFrame}from'../../../internal/variants.js';import type{LyraOrientation}from'../../../internal/shared-unions.js';
/**
* `<lr-flow-controls>` — the canvas's button cluster: zoom in/out, fit, and interaction lock, so
* every flow surface ships the same affordances without hosts rebuilding them. Manipulates only
* view state, never `nodes`/`edges` — no editing commands live here. Zoom-button availability comes
* from the canvas companion snapshot's finite, sorted effective bounds, never its raw public bound
* inputs.
*
* @customElement lr-flow-controls
* @slot - Extra host buttons appended to the cluster. A slotted `<button>` picks up the same
*   treatment as the built-in controls through a `::slotted(button)` rule — the shared
*   `--lr-icon-button-size` hit-area floor, the chrome-less transparent box, and the same
*   hover/press/disabled/focus-visible affordances. Only the slotted element itself is styled, not
*   the consumer's markup inside it.
* @csspart base - The `role="group"` wrapper. Drops its floating-surface chrome (border,
*   background, shadow, padding, radius) under `frame="plain"`.
* @csspart zoom-in - Zoom-in button.
* @csspart zoom-out - Zoom-out button.
* @csspart fit - Zoom-to-fit button.
* @csspart lock - Lock/unlock toggle button (omitted when `hideLock`).
* @cssprop [--lr-flow-controls-lock-active-color=var(--lr-color-brand)] - Pressed lock-button
*   foreground.
* @status stable
* @since 4.0.0
*/
export declare class LyraFlowControls extends LyraElement{static styles:import("lit").CSSResultGroup[];
/** Id of the `lr-flow-canvas` this cluster drives. Empty (the default) resolves to the nearest
*  ancestor canvas -- the slotted-into-a-corner-slot case. Changing it at runtime re-resolves and
*  re-subscribes; a target that mounts later is picked up too. */
for:string;
/** Layout axis of the button cluster. */
private _orientation;get orientation():LyraOrientation;set orientation(value:LyraOrientation);
/** Omits the lock/unlock toggle button entirely, for canvases that never expose an interaction
*  lock. */
hideLock:boolean;
/** Container treatment, in the shared `LyraFrame` vocabulary. `'card'` (the default) keeps the
*  bordered, filled, shadowed floating cluster. `'plain'` removes the border, background, shadow,
*  padding and corner radius, so a cluster placed in a host toolbar or panel that already draws
*  its own surface doesn't double the frame. The buttons keep their shared minimum hit area and
*  their own hover/focus affordances either way. */
frame:LyraFrame;private snapshot;private locked;private canvasEl?;private unsubscribe?;private readonly companionController;connectedCallback():void;disconnectedCallback():void;adoptedCallback():void;protected willUpdate(changed:PropertyValues):void;private attachCanvas;private toggleLock;render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-flow-controls':LyraFlowControls;}}