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import { injectable, inject } from 'tsyringe';
import KeymapRepository from '../repositories/KeymapRepository';
import SettingRepository from '../repositories/SettingRepository';
import AddonEnabledRepository from '../repositories/AddonEnabledRepository';
import * as operations from '../../shared/operations';
import Keymaps from '../../shared/settings/Keymaps';
import Key from '../../shared/settings/Key';
import KeySequence from '../domains/KeySequence';
import AddressRepository from '../repositories/AddressRepository';
const reservedKeymaps = Keymaps.fromJSON({
'<Esc>': { type: operations.CANCEL },
'<C-[>': { type: operations.CANCEL },
});
const enableAddonOps = [
operations.ADDON_ENABLE,
operations.ADDON_TOGGLE_ENABLED,
];
@injectable()
export default class KeymapUseCase {
constructor(
@inject('KeymapRepository')
private repository: KeymapRepository,
@inject('SettingRepository')
private settingRepository: SettingRepository,
@inject('AddonEnabledRepository')
private addonEnabledRepository: AddonEnabledRepository,
@inject('AddressRepository')
private addressRepository: AddressRepository,
) {
}
// eslint-disable-next-line max-statements
nextOps(key: Key): { repeat: number, op: operations.Operation } | null {
const sequence = this.repository.enqueueKey(key);
const baseSequence = sequence.trimNumericPrefix();
const keymaps = this.keymapEntityMap();
const matched = keymaps.filter(([seq]) => seq.startsWith(sequence));
const baseMatched = keymaps.filter(([seq]) => seq.startsWith(baseSequence));
if (baseSequence.length() === 1 && this.blacklistKey(key)) {
// ignore if the input starts with black list keys
this.repository.clear();
return null;
}
if (matched.length === 1 &&
sequence.length() === matched[0][0].length()) {
// keys are matched with an operation
this.repository.clear();
return { repeat: 1, op: matched[0][1] };
} else if (
baseMatched.length === 1 &&
baseSequence.length() === baseMatched[0][0].length()) {
// keys are matched with an operation with a numeric prefix
this.repository.clear();
return { repeat: sequence.repeatCount(), op: baseMatched[0][1] };
} else if (matched.length >= 1 || baseMatched.length >= 1) {
// keys are matched with an operation's prefix
return null;
}
// matched with no operations
this.repository.clear();
return null;
}
cancel() {
this.repository.clear();
}
private keymapEntityMap(): [KeySequence, operations.Operation][] {
const keymaps = this.settingRepository.get().keymaps.combine(reservedKeymaps);
let entries = keymaps.entries().map(
([keys, op]) => [KeySequence.fromMapKeys(keys), op]
) as [KeySequence, operations.Operation][];
if (!this.addonEnabledRepository.get()) {
// available keymaps are only ADDON_ENABLE and ADDON_TOGGLE_ENABLED if
// the addon disabled
entries = entries.filter(
([_seq, { type }]) => enableAddonOps.includes(type)
);
}
return entries;
}
private blacklistKey(key: Key): boolean {
const url = this.addressRepository.getCurrentURL();
const blacklist = this.settingRepository.get().blacklist;
return blacklist.includeKey(url, key);
}
}
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