// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:path/path.dart' as path; import 'base_code_gen.dart'; import 'key_data.dart'; import 'utils.dart'; /// Generates the key mapping of Web, based on the information in the key /// data structure given to it. class WebCodeGenerator extends PlatformCodeGenerator { WebCodeGenerator(KeyData keyData) : super(keyData); /// This generates the map of Web KeyboardEvent codes to logical key ids. String get _webLogicalKeyCodeMap { final StringBuffer result = StringBuffer(); for (final Key entry in keyData.data) { if (entry.name != null) { result.writeln(" '${entry.name}': ${toHex(entry.flutterId, digits: 10)},"); } } return result.toString().trimRight(); } /// This generates the map of Web KeyboardEvent codes to physical key USB HID codes. String get _webPhysicalKeyCodeMap { final StringBuffer result = StringBuffer(); for (final Key entry in keyData.data) { if (entry.name != null) { result.writeln(" '${entry.name}': ${toHex(entry.usbHidCode)},"); } } return result.toString().trimRight(); } /// This generates the map of Web number pad codes to logical key ids. String get _webNumpadCodeMap { final StringBuffer result = StringBuffer(); for (final Key entry in numpadKeyData) { if (entry.name != null) { result.writeln(" '${entry.name}': ${toHex(entry.flutterId, digits: 10)},"); } } return result.toString().trimRight(); } @override String get templatePath => path.join(flutterRoot.path, 'dev', 'tools', 'gen_keycodes', 'data', 'keyboard_map_web.tmpl'); @override String outputPath(String platform) => path.join(flutterRoot.path, '..', 'engine', 'src', 'flutter', path.join('lib', 'web_ui', 'lib', 'src', 'engine', 'keycodes', 'keyboard_map_web.dart')); @override Map<String, String> mappings() { return <String, String>{ 'WEB_LOGICAL_KEY_CODE_MAP': _webLogicalKeyCodeMap, 'WEB_PHYSICAL_KEY_CODE_MAP': _webPhysicalKeyCodeMap, 'WEB_NUMPAD_CODE_MAP': _webNumpadCodeMap, }; } }