/**
 * Bedrock UI Generator - Custom Element Type
 *
 * Custom elements use native code renderers to display
 * complex or dynamic content that can't be created with
 * standard UI elements.
 *
 * @see https://wiki.bedrock.dev/json-ui/json-ui-documentation#custom-render
 */
import type { BaseUIProperties } from "./base";
/**
 * Available custom renderers.
 *
 * Custom renderers are native code implementations that:
 * - Draw complex game content
 * - Handle special effects
 * - Display dynamic data
 *
 * Common renderers:
 * - `"paper_doll_renderer"` - Character preview
 * - `"inventory_item_renderer"` - Item display
 * - `"hover_text_renderer"` - Tooltip text
 * - `"progress_indicator_renderer"` - Loading indicators
 */
export type CustomRenderer = 
/** Renders text as a tooltip/hover popup */
"hover_text_renderer"
/** Renders a paper doll (character preview) */
 | "paper_doll_renderer"
/** Renders the live player model */
 | "live_player_renderer"
/** Renders the horse/mount model */
 | "live_horse_renderer"
/** Renders the hotbar slots */
 | "hotbar_renderer"
/** Renders health hearts */
 | "heart_renderer"
/** Renders armor icons */
 | "armor_renderer"
/** Renders horse/mount health */
 | "horse_heart_renderer"
/** Renders hunger/food icons */
 | "hunger_renderer"
/** Renders horse jump bar */
 | "horse_jump_renderer"
/** Renders experience bar */
 | "experience_renderer"
/** Renders active mob effects */
 | "mob_effects_renderer"
/** Renders the cursor/pointer */
 | "cursor_renderer"
/** Renders loading/progress indicators */
 | "progress_indicator_renderer"
/** Renders camera view */
 | "camera_renderer"
/** Renders web content */
 | "web_view_renderer"
/** Renders entity name tags */
 | "name_tag_renderer"
/** Renders flying/thrown items */
 | "flying_item_renderer"
/** Renders inventory items with 3D preview */
 | "inventory_item_renderer"
/** Renders credits text scroll */
 | "credits_renderer"
/** Renders toast notifications */
 | "toast_renderer"
/** Renders trial time remaining */
 | "trial_time_renderer"
/** Renders panoramic backgrounds */
 | "panorama_renderer"
/** Renders actor/entity portraits */
 | "actor_portrait_renderer"
/** Renders color gradients */
 | "gradient_renderer"
/** Renders debug screen info */
 | "debug_screen_renderer"
/** Renders 3D structure previews */
 | "3d_structure_renderer"
/** Renders splash text */
 | "splash_text_renderer"
/** Renders player model on HUD */
 | "hud_player_renderer"
/** Renders VR holographic cursor */
 | "ui_holo_cursor"
/** Renders enchanting table book */
 | "enchanting_book_renderer"
/** Renders bundle contents preview */
 | "bundle_renderer";
/**
 * Properties specific to custom renderer elements.
 *
 * Custom elements render native content including:
 * - Player/entity models
 * - HUD elements (hearts, armor, hunger)
 * - Item renderers
 * - Special effects
 *
 * Each renderer may have additional property_bag requirements.
 *
 * @example Paper doll renderer:
 * ```typescript
 * {
 *   type: "custom",
 *   renderer: "paper_doll_renderer",
 *   size: [50, 80]
 * }
 * ```
 *
 * @example Hover text renderer:
 * ```typescript
 * {
 *   type: "custom",
 *   renderer: "hover_text_renderer",
 *   bindings: [
 *     {
 *       binding_name: "#my_text",
 *       binding_name_override: "#hover_text"
 *     }
 *   ]
 * }
 * ```
 *
 * @example Inventory item renderer:
 * ```typescript
 * {
 *   type: "custom",
 *   renderer: "inventory_item_renderer",
 *   size: [16, 16],
 *   bindings: [
 *     {
 *       binding_type: "collection",
 *       binding_collection_name: "hotbar_items",
 *       binding_name: "#item_id_aux"
 *     }
 *   ]
 * }
 * ```
 */
export interface CustomProperties extends BaseUIProperties {
    /**
     * Element type - must be "custom".
     */
    type?: "custom";
    /**
     * The native renderer to use.
     * Each renderer handles specific content types.
     *
     * @see CustomRenderer for available options
     */
    renderer?: CustomRenderer;
}
/**
 * Type guard to check if an element is a custom renderer.
 */
export declare function isCustom(element: BaseUIProperties): element is CustomProperties;
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