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+/*
+ * Copyright (C) 2021 Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* global
+ * HotkeyUtil
+ * api
+ */
+
+class HotkeyHelpController {
+ constructor() {
+ this._hotkeyUtil = new HotkeyUtil();
+ this._localActionHotseys = new Map();
+ this._globalActionHotkeys = new Map();
+ this._replacementPattern = /\{0\}/g;
+ }
+
+ async prepare() {
+ const {platform: {os}} = await api.getEnvironmentInfo();
+ this._hotkeyUtil.os = os;
+ await this._setupGlobalCommands(this._globalActionHotkeys);
+ }
+
+ setOptions(options) {
+ const hotkeys = options.inputs.hotkeys;
+ const hotkeyMap = this._localActionHotseys;
+ hotkeyMap.clear();
+ for (const {enabled, action, key, modifiers} of hotkeys) {
+ if (!enabled || key === null || action === '' || hotkeyMap.has(action)) { continue; }
+ hotkeyMap.set(action, this._hotkeyUtil.getInputDisplayValue(key, modifiers));
+ }
+ }
+
+ setupNode(node) {
+ const globalPrexix = 'global:';
+ const replacementPattern = this._replacementPattern;
+ for (const node2 of node.querySelectorAll('[data-hotkey]')) {
+ const data = JSON.parse(node2.dataset.hotkey);
+ let [action, attributes, values] = data;
+ if (!Array.isArray(attributes)) { attributes = [attributes]; }
+ const multipleValues = Array.isArray(values);
+
+ const actionIsGlobal = action.startsWith(globalPrexix);
+ if (actionIsGlobal) { action = action.substring(globalPrexix.length); }
+
+ const defaultAttributeValues = this._getDefaultAttributeValues(node2, data, attributes);
+
+ const hotkey = (actionIsGlobal ? this._globalActionHotkeys : this._localActionHotseys).get(action);
+
+ for (let i = 0, ii = attributes.length; i < ii; ++i) {
+ const attribute = attributes[i];
+ let value = null;
+ if (typeof hotkey !== 'undefined') {
+ value = (multipleValues ? values[i] : values);
+ value = value.replace(replacementPattern, hotkey);
+ } else {
+ value = defaultAttributeValues[i];
+ }
+
+ if (typeof value === 'string') {
+ node2.setAttribute(attribute, value);
+ } else {
+ node2.removeAttribute(attribute);
+ }
+ }
+ }
+ }
+
+ // Private
+
+ async _setupGlobalCommands(commandMap) {
+ const commands = await new Promise((resolve, reject) => {
+ if (!(isObject(chrome.commands) && typeof chrome.commands.getAll === 'function')) {
+ resolve([]);
+ return;
+ }
+
+ chrome.commands.getAll((result) => {
+ const e = chrome.runtime.lastError;
+ if (e) {
+ reject(new Error(e.message));
+ } else {
+ resolve(result);
+ }
+ });
+ });
+
+ commandMap.clear();
+ for (const {name, shortcut} of commands) {
+ if (shortcut.length === 0) { continue; }
+ const {key, modifiers} = this._hotkeyUtil.convertCommandToInput(shortcut);
+ commandMap.set(name, this._hotkeyUtil.getInputDisplayValue(key, modifiers));
+ }
+ return commandMap;
+ }
+
+ _getDefaultAttributeValues(node, data, attributes) {
+ if (data.length > 3) {
+ return data[3];
+ }
+
+ const defaultAttributeValues = [];
+ for (let i = 0, ii = attributes.length; i < ii; ++i) {
+ const attribute = attributes[i];
+ const value = node.hasAttribute(attribute) ? node.getAttribute(attribute) : null;
+ defaultAttributeValues.push(value);
+ }
+ data[3] = defaultAttributeValues;
+ node.dataset.hotkey = JSON.stringify(data);
+ return defaultAttributeValues;
+ }
+}