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-rw-r--r--ext/js/display/display-content-manager.js97
-rw-r--r--ext/js/display/display-generator.js6
-rw-r--r--ext/js/display/display.js8
-rw-r--r--ext/js/display/sandbox/structured-content-generator.js8
4 files changed, 108 insertions, 11 deletions
diff --git a/ext/js/display/display-content-manager.js b/ext/js/display/display-content-manager.js
new file mode 100644
index 00000000..a0dd7dd6
--- /dev/null
+++ b/ext/js/display/display-content-manager.js
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2020-2022 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
+ * StringUtil
+ */
+
+class DisplayContentManager {
+ constructor() {
+ this._token = {};
+ this._mediaCache = new Map();
+ this._loadMediaData = [];
+ }
+
+ async loadMedia(path, dictionary, onLoad, onUnload) {
+ const token = this._token;
+ const data = {onUnload, loaded: false};
+
+ this._loadMediaData.push(data);
+
+ const media = await this.getMedia(path, dictionary);
+ if (token !== this._token) { return; }
+
+ onLoad(media.url);
+ data.loaded = true;
+ }
+
+ unloadAll() {
+ for (const {onUnload, loaded} of this._loadMediaData) {
+ if (typeof onUnload === 'function') {
+ onUnload(loaded);
+ }
+ }
+ this._loadMediaData = [];
+
+ for (const map of this._mediaCache.values()) {
+ for (const {url} of map.values()) {
+ if (url !== null) {
+ URL.revokeObjectURL(url);
+ }
+ }
+ }
+ this._mediaCache.clear();
+
+ this._token = {};
+ }
+
+ async getMedia(path, dictionary) {
+ let cachedData;
+ let dictionaryCache = this._mediaCache.get(dictionary);
+ if (typeof dictionaryCache !== 'undefined') {
+ cachedData = dictionaryCache.get(path);
+ } else {
+ dictionaryCache = new Map();
+ this._mediaCache.set(dictionary, dictionaryCache);
+ }
+
+ if (typeof cachedData === 'undefined') {
+ cachedData = {
+ promise: null,
+ data: null,
+ url: null
+ };
+ dictionaryCache.set(path, cachedData);
+ cachedData.promise = this._getMediaData(path, dictionary, cachedData);
+ }
+
+ return cachedData.promise;
+ }
+
+ async _getMediaData(path, dictionary, cachedData) {
+ const token = this._token;
+ const data = (await yomichan.api.getMedia([{path, dictionary}]))[0];
+ if (token === this._token && data !== null) {
+ const buffer = StringUtil.base64ToArrayBuffer(data.content);
+ const blob = new Blob([buffer], {type: data.mediaType});
+ const url = URL.createObjectURL(blob);
+ cachedData.data = data;
+ cachedData.url = url;
+ }
+ return cachedData;
+ }
+}
diff --git a/ext/js/display/display-generator.js b/ext/js/display/display-generator.js
index a28a00a2..1f485a4f 100644
--- a/ext/js/display/display-generator.js
+++ b/ext/js/display/display-generator.js
@@ -23,12 +23,12 @@
*/
class DisplayGenerator {
- constructor({japaneseUtil, mediaLoader, hotkeyHelpController=null}) {
+ constructor({japaneseUtil, contentManager, hotkeyHelpController=null}) {
this._japaneseUtil = japaneseUtil;
- this._mediaLoader = mediaLoader;
+ this._contentManager = contentManager;
this._hotkeyHelpController = hotkeyHelpController;
this._templates = null;
- this._structuredContentGenerator = new StructuredContentGenerator(this._mediaLoader, document);
+ this._structuredContentGenerator = new StructuredContentGenerator(this._contentManager, document);
this._pronunciationGenerator = new PronunciationGenerator(japaneseUtil);
}
diff --git a/ext/js/display/display.js b/ext/js/display/display.js
index 5bebe0ed..a89008b4 100644
--- a/ext/js/display/display.js
+++ b/ext/js/display/display.js
@@ -16,6 +16,7 @@
*/
/* global
+ * DisplayContentManager
* DisplayGenerator
* DisplayHistory
* DisplayNotification
@@ -24,7 +25,6 @@
* FrameEndpoint
* Frontend
* HotkeyHelpController
- * MediaLoader
* OptionToggleHotkeyHandler
* PopupFactory
* PopupMenu
@@ -52,11 +52,11 @@ class Display extends EventDispatcher {
this._styleNode = null;
this._eventListeners = new EventListenerCollection();
this._setContentToken = null;
- this._mediaLoader = new MediaLoader();
+ this._contentManager = new DisplayContentManager();
this._hotkeyHelpController = new HotkeyHelpController();
this._displayGenerator = new DisplayGenerator({
japaneseUtil,
- mediaLoader: this._mediaLoader,
+ contentManager: this._contentManager,
hotkeyHelpController: this._hotkeyHelpController
});
this._messageHandlers = new Map();
@@ -543,7 +543,7 @@ class Display extends EventDispatcher {
this._closePopups();
this._closeAllPopupMenus();
this._eventListeners.removeAllEventListeners();
- this._mediaLoader.unloadAll();
+ this._contentManager.unloadAll();
this._hideTagNotification(false);
this._triggerContentClear();
this._dictionaryEntries = [];
diff --git a/ext/js/display/sandbox/structured-content-generator.js b/ext/js/display/sandbox/structured-content-generator.js
index e45713e7..799da586 100644
--- a/ext/js/display/sandbox/structured-content-generator.js
+++ b/ext/js/display/sandbox/structured-content-generator.js
@@ -16,8 +16,8 @@
*/
class StructuredContentGenerator {
- constructor(mediaLoader, document) {
- this._mediaLoader = mediaLoader;
+ constructor(contentManager, document) {
+ this._contentManager = contentManager;
this._document = document;
}
@@ -141,8 +141,8 @@ class StructuredContentGenerator {
aspectRatioSizer.style.paddingTop = `${invAspectRatio * 100.0}%`;
- if (this._mediaLoader !== null) {
- this._mediaLoader.loadMedia(
+ if (this._contentManager !== null) {
+ this._contentManager.loadMedia(
path,
dictionary,
(url) => this._setImageData(node, image, imageBackground, url, false),