use setters instead of EventDispatcher

ext/fg/js/frontend-initialize.js

@@ -73,8 +73,6 @@ async function main() {
 
     const isIframe = !proxy && (window !== window.parent);
 
-    const initEventDispatcher = new EventDispatcher();
-
     const popups = {
         iframe: null,
         proxy: null,
@@ -99,18 +97,18 @@ async function main() {
             popups.normal = popup;
         }
 
-        if (isSearchPage) {
-            const disabled = !options.scanning.enableOnSearchPage;
-            initEventDispatcher.trigger('setDisabledOverride', {disabled});
-        }
-
-        if (isIframe) {
-            initEventDispatcher.trigger('popupChange', {popup});
-        }
-
         if (frontend === null) {
-            frontend = new Frontend(popup, initEventDispatcher);
+            frontend = new Frontend(popup);
             await frontend.prepare();
+        } else {
+            if (isSearchPage) {
+                const disabled = !options.scanning.enableOnSearchPage;
+                frontend.setDisabledOverride(disabled);
+            }
+
+            if (isIframe) {
+                await frontend.setPopup(popup);
+            }
         }
     };
 

ext/fg/js/frontend.js

@@ -26,7 +26,7 @@
  */
 
 class Frontend extends TextScanner {
-    constructor(popup, initEventDispatcher=null) {
+    constructor(popup) {
         super(
             window,
             () => this.popup.isProxy() ? [] : [this.popup.getContainer()],
@@ -35,7 +35,6 @@ class Frontend extends TextScanner {
         );
 
         this.popup = popup;
-        this.initEventDispatcher = initEventDispatcher;
 
         this._disabledOverride = false;
 
@@ -77,11 +76,6 @@ class Frontend extends TextScanner {
                 window.visualViewport.addEventListener('resize', this.onVisualViewportResize.bind(this));
             }
 
-            if (this.initEventDispatcher !== null) {
-                this.initEventDispatcher.on('setDisabledOverride', this.onSetDisabledOverride.bind(this));
-                this.initEventDispatcher.on('popupChange', this.onPopupChange.bind(this));
-            }
-
             yomichan.on('orphaned', this.onOrphaned.bind(this));
             yomichan.on('optionsUpdated', this.updateOptions.bind(this));
             yomichan.on('zoomChanged', this.onZoomChanged.bind(this));
@@ -142,6 +136,20 @@ class Frontend extends TextScanner {
         ];
     }
 
+    setDisabledOverride(disabled) {
+        this._disabledOverride = disabled;
+        // other cases handed by regular options update
+        if (disabled && this.enabled) {
+            this.setEnabled(false);
+        }
+    }
+
+    async setPopup(popup) {
+        this.onSearchClear(true);
+        this.popup = popup;
+        await popup.setOptions(this.options);
+    }
+
     async updateOptions() {
         this.setOptions(await apiOptionsGet(this.getOptionsContext()));
 
@@ -237,20 +245,6 @@ class Frontend extends TextScanner {
         super.onSearchClear(changeFocus);
     }
 
-    onSetDisabledOverride({disabled}) {
-        this._disabledOverride = disabled;
-        // other cases handed by regular options update
-        if (disabled && this.enabled) {
-            this.setEnabled(false);
-        }
-    }
-
-    async onPopupChange({popup}) {
-        this.onSearchClear(true);
-        this.popup = popup;
-        await popup.setOptions(this.options);
-    }
-
     getOptionsContext() {
         this.optionsContext.url = this.popup.url;
         return this.optionsContext;