diff options
Diffstat (limited to 'ext/mixed')
| -rw-r--r-- | ext/mixed/js/display.js | 69 | ||||
| -rw-r--r-- | ext/mixed/js/hotkey-handler.js | 146 |
2 files changed, 156 insertions, 59 deletions
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js index 0924a5fe..eca4dda5 100644 --- a/ext/mixed/js/display.js +++ b/ext/mixed/js/display.js @@ -24,6 +24,7 @@ * DocumentUtil * FrameEndpoint * Frontend + * HotkeyHandler * MediaLoader * PopupFactory * QueryParser @@ -59,8 +60,7 @@ class Display extends EventDispatcher { japaneseUtil, mediaLoader: this._mediaLoader }); - this._hotkeys = new Map(); - this._actions = new Map(); + this._hotkeyHandler = new HotkeyHandler(this._pageType); this._messageHandlers = new Map(); this._directMessageHandlers = new Map(); this._windowMessageHandlers = new Map(); @@ -115,7 +115,7 @@ class Display extends EventDispatcher { this._tagNotification = null; this._tagNotificationContainer = document.querySelector('#content-footer'); - this.registerActions([ + this._hotkeyHandler.registerActions([ ['close', () => { this.close(); }], ['nextEntry', () => { this._focusEntry(this._index + 1, true); }], ['nextEntry3', () => { this._focusEntry(this._index + 3, true); }], @@ -183,6 +183,10 @@ class Display extends EventDispatcher { return this._depth; } + get hotkeyHandler() { + return this._hotkeyHandler; + } + async prepare() { // State setup const {documentElement} = document; @@ -195,6 +199,7 @@ class Display extends EventDispatcher { this._audioSystem.prepare(); this._queryParser.prepare(); this._history.prepare(); + this._hotkeyHandler.prepare(); // Event setup this._history.on('stateChanged', this._onStateChanged.bind(this)); @@ -213,7 +218,6 @@ class Display extends EventDispatcher { documentElement.addEventListener('auxclick', this._onDocumentElementClick.bind(this), false); } - document.addEventListener('keydown', this.onKeyDown.bind(this), false); document.addEventListener('wheel', this._onWheel.bind(this), {passive: false}); if (this._closeButton !== null) { this._closeButton.addEventListener('click', this._onCloseButtonClick.bind(this), false); @@ -251,27 +255,6 @@ class Display extends EventDispatcher { yomichan.logError(error); } - onKeyDown(e) { - const key = e.code; - const handlers = this._hotkeys.get(key); - if (typeof handlers === 'undefined') { return false; } - - const eventModifiers = DocumentUtil.getActiveModifiers(e); - for (const {modifiers, action} of handlers) { - if (!this._areSame(modifiers, eventModifiers)) { continue; } - - const actionHandler = this._actions.get(action); - if (typeof actionHandler === 'undefined') { continue; } - - const result = actionHandler(e); - if (result !== false) { - e.preventDefault(); - return true; - } - } - return false; - } - getOptions() { return this._options; } @@ -375,12 +358,6 @@ class Display extends EventDispatcher { } } - registerActions(actions) { - for (const [name, handler] of actions) { - this._actions.set(name, handler); - } - } - registerMessageHandlers(handlers) { for (const [name, handlerInfo] of handlers) { this._messageHandlers.set(name, handlerInfo); @@ -1595,16 +1572,6 @@ class Display extends EventDispatcher { return await api.getDefinitionAudioInfo(source, expression, reading, details); } - _areSame(set, array) { - if (set.size !== array.length) { return false; } - for (const value of array) { - if (!set.has(value)) { - return false; - } - } - return true; - } - async _setOptionsContextIfDifferent(optionsContext) { if (deepEqual(this._optionsContext, optionsContext)) { return; } await this.setOptionsContext(optionsContext); @@ -1911,25 +1878,9 @@ class Display extends EventDispatcher { await this._invokeOwner('setFrameSize', {width, height}); } - _registerHotkey(key, modifiers, action) { - if (!this._actions.has(action)) { return false; } - - let handlers = this._hotkeys.get(key); - if (typeof handlers === 'undefined') { - handlers = []; - this._hotkeys.set(key, handlers); - } - handlers.push({modifiers: new Set(modifiers), action}); - return true; - } - _updateHotkeys(options) { - this._hotkeys.clear(); - - for (const {action, key, modifiers, scopes, enabled} of options.inputs.hotkeys) { - if (!enabled || action === '' || !scopes.includes(this._pageType)) { continue; } - this._registerHotkey(key, modifiers, action); - } + this._hotkeyHandler.clearHotkeys(); + this._hotkeyHandler.registerHotkeys(options.inputs.hotkeys); } async _closeTab() { diff --git a/ext/mixed/js/hotkey-handler.js b/ext/mixed/js/hotkey-handler.js new file mode 100644 index 00000000..01c33f5d --- /dev/null +++ b/ext/mixed/js/hotkey-handler.js @@ -0,0 +1,146 @@ +/* + * 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 <https://www.gnu.org/licenses/>. + */ + +/* global + * DocumentUtil + */ + +/** + * Class which handles hotkey events and actions. + */ +class HotkeyHandler extends EventDispatcher { + /** + * Creates a new instance of the class. + * @param scope The scope required for hotkey definitions. + */ + constructor(scope) { + super(); + this._scope = scope; + this._hotkeys = new Map(); + this._actions = new Map(); + this._eventListeners = new EventListenerCollection(); + } + + /** + * Gets the scope required for the hotkey definitions. + */ + get scope() { + return this._scope; + } + + /** + * Sets the scope required for the hotkey definitions. + */ + set scope(value) { + this._scope = value; + } + + /** + * Begins listening to key press events in order to detect hotkeys. + */ + prepare() { + this._eventListeners.addEventListener(document, 'keydown', this._onKeyDown.bind(this), false); + } + + /** + * Stops listening to key press events. + */ + cleanup() { + this._eventListeners.removeAllEventListeners(); + } + + /** + * Registers a set of actions that this hotkey handler supports. + * @param actions An array of `[name, handler]` entries, where `name` is a string and `handler` is a function. + */ + registerActions(actions) { + for (const [name, handler] of actions) { + this._actions.set(name, handler); + } + } + + /** + * Registers a set of hotkeys + * @param hotkeys An array of hotkey definitions of the format `{action, key, modifiers, scopes, enabled}`. + * * `action` - a string indicating which action to perform. + * * `key` - a keyboard key code indicating which key needs to be pressed. + * * `modifiers` - an array of keyboard modifiers which also need to be pressed. Supports: `'alt', 'ctrl', 'shift', 'meta'`. + * * `scopes` - an array of scopes for which the hotkey is valid. If this array does not contain `this.scope`, the hotkey will not be registered. + * * `enabled` - a boolean indicating whether the hotkey is currently enabled. + */ + registerHotkeys(hotkeys) { + for (const {action, key, modifiers, scopes, enabled} of hotkeys) { + if ( + enabled && + action !== '' && + scopes.includes(this._scope) + ) { + this._registerHotkey(key, modifiers, action); + } + } + } + + /** + * Removes all registered hotkeys. + */ + clearHotkeys() { + this._hotkeys.clear(); + } + + // Private + + _onKeyDown(e) { + const key = e.code; + const handlers = this._hotkeys.get(key); + if (typeof handlers !== 'undefined') { + const eventModifiers = DocumentUtil.getActiveModifiers(e); + for (const {modifiers, action} of handlers) { + if (!this._areSame(modifiers, eventModifiers)) { continue; } + + const actionHandler = this._actions.get(action); + if (typeof actionHandler === 'undefined') { continue; } + + const result = actionHandler(e); + if (result !== false) { + e.preventDefault(); + return true; + } + } + } + this.trigger('keydownNonHotkey', e); + return false; + } + + _registerHotkey(key, modifiers, action) { + let handlers = this._hotkeys.get(key); + if (typeof handlers === 'undefined') { + handlers = []; + this._hotkeys.set(key, handlers); + } + handlers.push({modifiers: new Set(modifiers), action}); + } + + _areSame(set, array) { + if (set.size !== array.length) { return false; } + for (const value of array) { + if (!set.has(value)) { + return false; + } + } + return true; + } +} |