Move mixed/js (#1383)

* Move mixed/js/core.js to js/core.js

* Move mixed/js/yomichan.js to js/yomichan.js

* Move mixed/js/timer.js to js/debug/timer.js

* Move mixed/js/hotkey-handler.js to js/input/hotkey-handler.js

* Move mixed/js/hotkey-help-controller.js to js/input/hotkey-help-controller.js

* Move mixed/js/hotkey-util.js to js/input/hotkey-util.js

* Move mixed/js/audio-system.js to js/input/audio-system.js

* Move mixed/js/media-loader.js to js/input/media-loader.js

* Move mixed/js/text-to-speech-audio.js to js/input/text-to-speech-audio.js

* Move mixed/js/comm.js to js/comm/cross-frame-api.js

* Move mixed/js/api.js to js/comm/api.js

* Move mixed/js/frame-client.js to js/comm/frame-client.js

* Move mixed/js/frame-endpoint.js to js/comm/frame-endpoint.js

* Move mixed/js/display.js to js/display/display.js

* Move mixed/js/display-audio.js to js/display/display-audio.js

* Move mixed/js/display-generator.js to js/display/display-generator.js

* Move mixed/js/display-history.js to js/display/display-history.js

* Move mixed/js/display-notification.js to js/display/display-notification.js

* Move mixed/js/display-profile-selection.js to js/display/display-profile-selection.js

* Move mixed/js/japanese.js to js/language/japanese-util.js

* Move mixed/js/dictionary-data-util.js to js/language/dictionary-data-util.js

* Move mixed/js/document-focus-controller.js to js/dom/document-focus-controller.js

* Move mixed/js/document-util.js to js/dom/document-util.js

* Move mixed/js/dom-data-binder.js to js/dom/dom-data-binder.js

* Move mixed/js/html-template-collection.js to js/dom/html-template-collection.js

* Move mixed/js/panel-element.js to js/dom/panel-element.js

* Move mixed/js/popup-menu.js to js/dom/popup-menu.js

* Move mixed/js/selector-observer.js to js/dom/selector-observer.js

* Move mixed/js/scroll.js to js/dom/window-scroll.js

* Move mixed/js/text-scanner.js to js/language/text-scanner.js

* Move mixed/js/cache-map.js to js/general/cache-map.js

* Move mixed/js/object-property-accessor.js to js/general/object-property-accessor.js

* Move mixed/js/task-accumulator.js to js/general/task-accumulator.js

* Move mixed/js/environment.js to js/background/environment.js

* Move mixed/js/dynamic-loader.js to js/scripting/dynamic-loader.js

* Move mixed/js/dynamic-loader-sentinel.js to js/scripting/dynamic-loader-sentinel.js

1 files changed, 65 insertions, 0 deletions

diff --git a/ext/js/comm/frame-endpoint.js b/ext/js/comm/frame-endpoint.js
new file mode 100644
index 00000000..27af9cf3
--- /dev/null
+++ b/ext/js/comm/frame-endpoint.js
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2020-2021  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
+ * api
+ */
+
+class FrameEndpoint {
+    constructor() {
+        this._secret = generateId(16);
+        this._token = null;
+        this._eventListeners = new EventListenerCollection();
+        this._eventListenersSetup = false;
+    }
+
+    signal() {
+        if (!this._eventListenersSetup) {
+            this._eventListeners.addEventListener(window, 'message', this._onMessage.bind(this), false);
+            this._eventListenersSetup = true;
+        }
+        api.broadcastTab('frameEndpointReady', {secret: this._secret});
+    }
+
+    authenticate(message) {
+        return (
+            this._token !== null &&
+            isObject(message) &&
+            this._token === message.token &&
+            this._secret === message.secret
+        );
+    }
+
+    _onMessage(e) {
+        if (this._token !== null) { return; } // Already initialized
+
+        const data = e.data;
+        if (!isObject(data) || data.action !== 'frameEndpointConnect') { return; } // Invalid message
+
+        const params = data.params;
+        if (!isObject(params)) { return; } // Invalid data
+
+        const secret = params.secret;
+        if (secret !== this._secret) { return; } // Invalid authentication
+
+        const {token, hostFrameId} = params;
+        this._token = token;
+
+        this._eventListeners.removeAllEventListeners();
+        api.sendMessageToFrame(hostFrameId, 'frameEndpointConnected', {secret, token});
+    }
+}