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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 Key from '../domains/Key';
import KeySequence from '../domains/KeySequence';
import Keymaps from '../../shared/settings/Keymaps';
type KeymapEntityMap = Map<KeySequence, operations.Operation>;
const reservedKeymaps = Keymaps.fromJSON({
'<Esc>': { type: operations.CANCEL },
'<C-[>': { type: operations.CANCEL },
});
@injectable()
export default class KeymapUseCase {
constructor(
@inject('KeymapRepository')
private repository: KeymapRepository,
@inject('SettingRepository')
private settingRepository: SettingRepository,
@inject('AddonEnabledRepository')
private addonEnabledRepository: AddonEnabledRepository,
) {
}
nextOp(key: Key): operations.Operation | null {
let sequence = this.repository.enqueueKey(key);
let keymaps = this.keymapEntityMap();
let matched = Array.from(keymaps.keys()).filter(
(mapping: KeySequence) => {
return mapping.startsWith(sequence);
});
if (!this.addonEnabledRepository.get()) {
// available keymaps are only ADDON_ENABLE and ADDON_TOGGLE_ENABLED if
// the addon disabled
matched = matched.filter((keymap) => {
let type = (keymaps.get(keymap) as operations.Operation).type;
return type === operations.ADDON_ENABLE ||
type === operations.ADDON_TOGGLE_ENABLED;
});
}
if (matched.length === 0) {
// No operations to match with inputs
this.repository.clear();
return null;
} else if (matched.length > 1 ||
matched.length === 1 && sequence.length() < matched[0].length()) {
// More than one operations are matched
return null;
}
// Exactly one operation is matched
let operation = keymaps.get(matched[0]) as operations.Operation;
this.repository.clear();
return operation;
}
clear(): void {
this.repository.clear();
}
private keymapEntityMap(): KeymapEntityMap {
let keymaps = this.settingRepository.get().keymaps.combine(reservedKeymaps);
let entries = keymaps.entries().map(entry => [
KeySequence.fromMapKeys(entry[0]),
entry[1],
]) as [KeySequence, operations.Operation][];
return new Map<KeySequence, operations.Operation>(entries);
}
}
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