import { AIVariableContext } from '@theia/ai-core';
import { AIVariableDropResult, FrontendVariableContribution, FrontendVariableService } from '@theia/ai-core/lib/browser';
import { ILogger, QuickInputService, QuickPickItemOrSeparator, URI } from '@theia/core';
import * as monaco from '@theia/monaco-editor-core';
import { FileQuickPickItem, QuickFileSelectService } from '@theia/file-search/lib/browser/quick-file-select-service';
import { WorkspaceService } from '@theia/workspace/lib/browser';
import { FileService } from '@theia/filesystem/lib/browser/file-service';
import { ApplicationShell, LabelProvider } from '@theia/core/lib/browser';
import { NavigationLocationService } from '@theia/editor/lib/browser/navigation/navigation-location-service';
import { QuickPickItem } from '@theia/core/lib/common/quick-pick-service';
interface ClipboardQuickPickItem extends QuickPickItem {
    isClipboardOption: true;
}
type ImagePickerItem = FileQuickPickItem | ClipboardQuickPickItem;
export declare class FileChatVariableContribution implements FrontendVariableContribution {
    protected readonly fileService: FileService;
    protected readonly wsService: WorkspaceService;
    protected readonly quickInputService: QuickInputService;
    protected readonly quickFileSelectService: QuickFileSelectService;
    protected readonly logger: ILogger;
    protected readonly shell: ApplicationShell;
    protected readonly labelProvider: LabelProvider;
    protected readonly navigationLocationService: NavigationLocationService;
    registerVariables(service: FrontendVariableService): void;
    protected triggerArgumentPicker(): Promise<string | undefined>;
    protected imageArgumentPicker(): Promise<string | undefined>;
    /**
     * Build the complete list of items for the image picker.
     * Includes recently opened images, file search results (when filtering), and clipboard option.
     */
    protected buildImagePickerItems(filter: string): Promise<(ImagePickerItem | QuickPickItemOrSeparator)[]>;
    /**
     * Get quick pick items for recently opened image files.
     */
    protected getRecentlyOpenedImagePicks(filter: string, collectedUris: Set<string>): FileQuickPickItem[];
    /**
     * Search for image files matching the filter.
     */
    protected getImageSearchResults(filter: string, collectedUris: Set<string>): Promise<FileQuickPickItem[]>;
    /**
     * Convert a URI to a FileQuickPickItem.
     */
    protected toFileQuickPickItem(uri: URI): FileQuickPickItem;
    /**
     * Read an image from the clipboard and return it as an ImageContextVariable argument string.
     */
    protected readImageFromClipboard(): Promise<string | undefined>;
    /**
     * Convert a Blob to base64 string.
     */
    protected blobToBase64(blob: Blob): Promise<string>;
    protected provideArgumentCompletionItems(model: monaco.editor.ITextModel, position: monaco.Position, matchString?: string): Promise<monaco.languages.CompletionItem[] | undefined>;
    /**
     * Get icon classes for a file URI, matching the format used by QuickFileSelectService.
     */
    protected getFileIconClasses(uri: URI): string[];
    /**
     * Checks if a file is an image based on its extension.
     */
    protected isImageFile(filePath: string): boolean;
    protected handleDrop(event: DragEvent, _: AIVariableContext): Promise<AIVariableDropResult | undefined>;
}
export {};
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