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80 lines
3.0 KiB
Dart
80 lines
3.0 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:path/path.dart' as path;
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import 'base_code_gen.dart';
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import 'constants.dart';
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import 'logical_key_data.dart';
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import 'physical_key_data.dart';
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import 'utils.dart';
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/// Generates the key mapping for Web, based on the information in the key
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/// data structure given to it.
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class WebCodeGenerator extends PlatformCodeGenerator {
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WebCodeGenerator(
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super.keyData,
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super.logicalData,
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String logicalLocationMap,
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) : _logicalLocationMap = parseMapOfListOfNullableString(logicalLocationMap);
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/// This generates the map of Web KeyboardEvent codes to logical key ids.
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String get _webLogicalKeyCodeMap {
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final OutputLines<String> lines = OutputLines<String>('Web logical map');
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for (final LogicalKeyEntry entry in logicalData.entries) {
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final int plane = getPlane(entry.value);
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if (plane == kUnprintablePlane.value) {
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for (final String name in entry.webNames) {
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lines.add(name, " '$name': ${toHex(entry.value, digits: 11)},");
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}
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}
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}
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return lines.sortedJoin().trimRight();
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}
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/// This generates the map of Web KeyboardEvent codes to physical key USB HID codes.
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String get _webPhysicalKeyCodeMap {
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final OutputLines<String> lines = OutputLines<String>('Web physical map');
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for (final PhysicalKeyEntry entry in keyData.entries) {
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for (final String webCode in entry.webCodes()) {
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lines.add(webCode,
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" '$webCode': ${toHex(entry.usbHidCode)}, // ${entry.constantName}");
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}
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}
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return lines.sortedJoin().trimRight();
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}
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/// This generates the map of Web number pad codes to logical key ids.
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String get _webLogicalLocationMap {
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final OutputLines<String> lines = OutputLines<String>('Web logical location map');
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_logicalLocationMap.forEach((String webKey, List<String?> locations) {
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final String valuesString = locations.map((String? value) {
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return value == null ? 'null' : toHex(logicalData.entryByName(value).value, digits: 11);
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}).join(', ');
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final String namesString = locations.map((String? value) {
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return value == null ? 'null' : logicalData.entryByName(value).constantName;
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}).join(', ');
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lines.add(webKey, " '$webKey': <int?>[$valuesString], // $namesString");
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});
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return lines.sortedJoin().trimRight();
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}
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final Map<String, List<String?>> _logicalLocationMap;
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@override
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String get templatePath => path.join(dataRoot, 'web_key_map_dart.tmpl');
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@override
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String outputPath(String platform) => path.join(PlatformCodeGenerator.engineRoot,
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'lib', 'web_ui', 'lib', 'src', 'engine', 'key_map.g.dart');
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@override
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Map<String, String> mappings() {
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return <String, String>{
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'WEB_LOGICAL_KEY_CODE_MAP': _webLogicalKeyCodeMap,
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'WEB_PHYSICAL_KEY_CODE_MAP': _webPhysicalKeyCodeMap,
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'WEB_LOGICAL_LOCATION_MAP': _webLogicalLocationMap,
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};
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}
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}
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