418 lines
13 KiB
TypeScript
418 lines
13 KiB
TypeScript
/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import React, { useCallback, useEffect, useState } from 'react';
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import { Box, Text } from 'ink';
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import { Colors } from '../colors.js';
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import { SuggestionsDisplay } from './SuggestionsDisplay.js';
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import { useInputHistory } from '../hooks/useInputHistory.js';
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import { TextBuffer } from './shared/text-buffer.js';
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import { cpSlice, cpLen } from '../utils/textUtils.js';
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import chalk from 'chalk';
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import stringWidth from 'string-width';
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import { useShellHistory } from '../hooks/useShellHistory.js';
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import { useCompletion } from '../hooks/useCompletion.js';
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import { useKeypress, Key } from '../hooks/useKeypress.js';
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import { isAtCommand, isSlashCommand } from '../utils/commandUtils.js';
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import { CommandContext, SlashCommand } from '../commands/types.js';
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import { Config } from '@google/gemini-cli-core';
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export interface InputPromptProps {
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buffer: TextBuffer;
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onSubmit: (value: string) => void;
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userMessages: readonly string[];
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onClearScreen: () => void;
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config: Config;
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slashCommands: SlashCommand[];
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commandContext: CommandContext;
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placeholder?: string;
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focus?: boolean;
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inputWidth: number;
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suggestionsWidth: number;
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shellModeActive: boolean;
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setShellModeActive: (value: boolean) => void;
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}
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export const InputPrompt: React.FC<InputPromptProps> = ({
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buffer,
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onSubmit,
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userMessages,
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onClearScreen,
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config,
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slashCommands,
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commandContext,
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placeholder = ' Type your message or @path/to/file',
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focus = true,
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inputWidth,
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suggestionsWidth,
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shellModeActive,
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setShellModeActive,
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}) => {
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const [justNavigatedHistory, setJustNavigatedHistory] = useState(false);
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const completion = useCompletion(
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buffer.text,
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config.getTargetDir(),
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isAtCommand(buffer.text) || isSlashCommand(buffer.text),
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slashCommands,
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commandContext,
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config,
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);
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const resetCompletionState = completion.resetCompletionState;
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const shellHistory = useShellHistory(config.getProjectRoot());
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const handleSubmitAndClear = useCallback(
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(submittedValue: string) => {
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if (shellModeActive) {
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shellHistory.addCommandToHistory(submittedValue);
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}
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// Clear the buffer *before* calling onSubmit to prevent potential re-submission
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// if onSubmit triggers a re-render while the buffer still holds the old value.
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buffer.setText('');
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onSubmit(submittedValue);
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resetCompletionState();
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},
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[onSubmit, buffer, resetCompletionState, shellModeActive, shellHistory],
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);
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const customSetTextAndResetCompletionSignal = useCallback(
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(newText: string) => {
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buffer.setText(newText);
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setJustNavigatedHistory(true);
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},
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[buffer, setJustNavigatedHistory],
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);
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const inputHistory = useInputHistory({
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userMessages,
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onSubmit: handleSubmitAndClear,
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isActive: !completion.showSuggestions && !shellModeActive,
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currentQuery: buffer.text,
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onChange: customSetTextAndResetCompletionSignal,
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});
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// Effect to reset completion if history navigation just occurred and set the text
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useEffect(() => {
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if (justNavigatedHistory) {
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resetCompletionState();
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setJustNavigatedHistory(false);
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}
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}, [
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justNavigatedHistory,
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buffer.text,
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resetCompletionState,
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setJustNavigatedHistory,
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]);
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const completionSuggestions = completion.suggestions;
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const handleAutocomplete = useCallback(
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(indexToUse: number) => {
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if (indexToUse < 0 || indexToUse >= completionSuggestions.length) {
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return;
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}
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const query = buffer.text;
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const suggestion = completionSuggestions[indexToUse].value;
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if (query.trimStart().startsWith('/')) {
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const hasTrailingSpace = query.endsWith(' ');
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const parts = query
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.trimStart()
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.substring(1)
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.split(/\s+/)
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.filter(Boolean);
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let isParentPath = false;
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// If there's no trailing space, we need to check if the current query
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// is already a complete path to a parent command.
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if (!hasTrailingSpace) {
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let currentLevel: SlashCommand[] | undefined = slashCommands;
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for (let i = 0; i < parts.length; i++) {
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const part = parts[i];
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const found: SlashCommand | undefined = currentLevel?.find(
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(cmd) => cmd.name === part || cmd.altName === part,
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);
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if (found) {
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if (i === parts.length - 1 && found.subCommands) {
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isParentPath = true;
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}
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currentLevel = found.subCommands;
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} else {
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// Path is invalid, so it can't be a parent path.
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currentLevel = undefined;
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break;
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}
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}
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}
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// Determine the base path of the command.
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// - If there's a trailing space, the whole command is the base.
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// - If it's a known parent path, the whole command is the base.
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// - Otherwise, the base is everything EXCEPT the last partial part.
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const basePath =
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hasTrailingSpace || isParentPath ? parts : parts.slice(0, -1);
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const newValue = `/${[...basePath, suggestion].join(' ')} `;
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buffer.setText(newValue);
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} else {
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const atIndex = query.lastIndexOf('@');
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if (atIndex === -1) return;
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const pathPart = query.substring(atIndex + 1);
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const lastSlashIndexInPath = pathPart.lastIndexOf('/');
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let autoCompleteStartIndex = atIndex + 1;
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if (lastSlashIndexInPath !== -1) {
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autoCompleteStartIndex += lastSlashIndexInPath + 1;
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}
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buffer.replaceRangeByOffset(
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autoCompleteStartIndex,
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buffer.text.length,
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suggestion,
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);
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}
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resetCompletionState();
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},
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[resetCompletionState, buffer, completionSuggestions, slashCommands],
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);
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const handleInput = useCallback(
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(key: Key) => {
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if (!focus) {
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return;
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}
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if (
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key.sequence === '!' &&
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buffer.text === '' &&
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!completion.showSuggestions
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) {
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setShellModeActive(!shellModeActive);
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buffer.setText(''); // Clear the '!' from input
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return;
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}
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if (key.name === 'escape') {
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if (shellModeActive) {
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setShellModeActive(false);
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return;
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}
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if (completion.showSuggestions) {
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completion.resetCompletionState();
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return;
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}
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}
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if (key.ctrl && key.name === 'l') {
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onClearScreen();
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return;
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}
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if (completion.showSuggestions) {
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if (key.name === 'up') {
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completion.navigateUp();
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return;
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}
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if (key.name === 'down') {
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completion.navigateDown();
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return;
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}
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if (key.name === 'tab' || (key.name === 'return' && !key.ctrl)) {
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if (completion.suggestions.length > 0) {
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const targetIndex =
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completion.activeSuggestionIndex === -1
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? 0 // Default to the first if none is active
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: completion.activeSuggestionIndex;
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if (targetIndex < completion.suggestions.length) {
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handleAutocomplete(targetIndex);
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}
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}
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return;
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}
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} else {
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if (!shellModeActive) {
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if (key.ctrl && key.name === 'p') {
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inputHistory.navigateUp();
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return;
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}
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if (key.ctrl && key.name === 'n') {
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inputHistory.navigateDown();
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return;
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}
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// Handle arrow-up/down for history on single-line or at edges
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if (
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key.name === 'up' &&
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(buffer.allVisualLines.length === 1 ||
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(buffer.visualCursor[0] === 0 && buffer.visualScrollRow === 0))
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) {
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inputHistory.navigateUp();
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return;
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}
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if (
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key.name === 'down' &&
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(buffer.allVisualLines.length === 1 ||
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buffer.visualCursor[0] === buffer.allVisualLines.length - 1)
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) {
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inputHistory.navigateDown();
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return;
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}
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} else {
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// Shell History Navigation
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if (key.name === 'up') {
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const prevCommand = shellHistory.getPreviousCommand();
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if (prevCommand !== null) buffer.setText(prevCommand);
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return;
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}
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if (key.name === 'down') {
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const nextCommand = shellHistory.getNextCommand();
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if (nextCommand !== null) buffer.setText(nextCommand);
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return;
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}
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}
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if (key.name === 'return' && !key.ctrl && !key.meta && !key.paste) {
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if (buffer.text.trim()) {
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handleSubmitAndClear(buffer.text);
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}
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return;
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}
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}
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// Newline insertion
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if (key.name === 'return' && (key.ctrl || key.meta || key.paste)) {
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buffer.newline();
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return;
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}
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// Ctrl+A (Home) / Ctrl+E (End)
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if (key.ctrl && key.name === 'a') {
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buffer.move('home');
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return;
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}
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if (key.ctrl && key.name === 'e') {
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buffer.move('end');
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return;
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}
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// Kill line commands
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if (key.ctrl && key.name === 'k') {
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buffer.killLineRight();
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return;
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}
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if (key.ctrl && key.name === 'u') {
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buffer.killLineLeft();
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return;
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}
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// External editor
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const isCtrlX = key.ctrl && (key.name === 'x' || key.sequence === '\x18');
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if (isCtrlX) {
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buffer.openInExternalEditor();
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return;
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}
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// Fallback to the text buffer's default input handling for all other keys
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buffer.handleInput(key);
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},
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[
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focus,
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buffer,
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completion,
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shellModeActive,
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setShellModeActive,
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onClearScreen,
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inputHistory,
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handleAutocomplete,
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handleSubmitAndClear,
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shellHistory,
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],
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);
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useKeypress(handleInput, { isActive: focus });
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const linesToRender = buffer.viewportVisualLines;
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const [cursorVisualRowAbsolute, cursorVisualColAbsolute] =
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buffer.visualCursor;
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const scrollVisualRow = buffer.visualScrollRow;
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return (
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<>
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<Box
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borderStyle="round"
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borderColor={shellModeActive ? Colors.AccentYellow : Colors.AccentBlue}
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paddingX={1}
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>
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<Text
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color={shellModeActive ? Colors.AccentYellow : Colors.AccentPurple}
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>
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{shellModeActive ? '! ' : '> '}
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</Text>
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<Box flexGrow={1} flexDirection="column">
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{buffer.text.length === 0 && placeholder ? (
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focus ? (
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<Text>
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{chalk.inverse(placeholder.slice(0, 1))}
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<Text color={Colors.Gray}>{placeholder.slice(1)}</Text>
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</Text>
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) : (
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<Text color={Colors.Gray}>{placeholder}</Text>
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)
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) : (
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linesToRender.map((lineText, visualIdxInRenderedSet) => {
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const cursorVisualRow = cursorVisualRowAbsolute - scrollVisualRow;
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let display = cpSlice(lineText, 0, inputWidth);
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const currentVisualWidth = stringWidth(display);
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if (currentVisualWidth < inputWidth) {
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display = display + ' '.repeat(inputWidth - currentVisualWidth);
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}
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if (visualIdxInRenderedSet === cursorVisualRow) {
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const relativeVisualColForHighlight = cursorVisualColAbsolute;
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if (relativeVisualColForHighlight >= 0) {
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if (relativeVisualColForHighlight < cpLen(display)) {
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const charToHighlight =
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cpSlice(
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display,
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relativeVisualColForHighlight,
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relativeVisualColForHighlight + 1,
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) || ' ';
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const highlighted = chalk.inverse(charToHighlight);
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display =
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cpSlice(display, 0, relativeVisualColForHighlight) +
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highlighted +
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cpSlice(display, relativeVisualColForHighlight + 1);
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} else if (
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relativeVisualColForHighlight === cpLen(display) &&
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cpLen(display) === inputWidth
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) {
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display = display + chalk.inverse(' ');
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}
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}
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}
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return (
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<Text key={`line-${visualIdxInRenderedSet}`}>{display}</Text>
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);
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})
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)}
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</Box>
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</Box>
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{completion.showSuggestions && (
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<Box>
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<SuggestionsDisplay
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suggestions={completion.suggestions}
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activeIndex={completion.activeSuggestionIndex}
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isLoading={completion.isLoadingSuggestions}
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width={suggestionsWidth}
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scrollOffset={completion.visibleStartIndex}
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userInput={buffer.text}
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/>
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</Box>
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)}
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</>
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);
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};
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