move broadcastRootPopupInformation to Frontend

ext/fg/js/frontend.js

@@ -18,6 +18,7 @@
 
 /* global
  * TextScanner
+ * apiForward
  * apiGetZoom
  * apiKanjiFind
  * apiOptionsGet
@@ -53,7 +54,7 @@ class Frontend extends TextScanner {
 
         this._runtimeMessageHandlers = new Map([
             ['popupSetVisibleOverride', ({visible}) => { this.popup.setVisibleOverride(visible); }],
-            ['rootPopupRequestInformationBroadcast', () => { this.popup.broadcastRootPopupInformation(); }]
+            ['rootPopupRequestInformationBroadcast', () => { this._broadcastRootPopupInformation(); }]
         ]);
     }
 
@@ -77,7 +78,7 @@ class Frontend extends TextScanner {
             chrome.runtime.onMessage.addListener(this.onRuntimeMessage.bind(this));
 
             this._updateContentScale();
-            this.popup.broadcastRootPopupInformation();
+            this._broadcastRootPopupInformation();
         } catch (e) {
             this.onError(e);
         }
@@ -257,6 +258,12 @@ class Frontend extends TextScanner {
         this._updatePopupPosition();
     }
 
+    _broadcastRootPopupInformation() {
+        if (!this.popup.isProxy() && this.popup.depth === 0) {
+            apiForward('rootPopupInformation', {popupId: this.popup.id, frameId: this.popup.frameId});
+        }
+    }
+
     async _updatePopupPosition() {
         const textSource = this.getCurrentTextSource();
         if (textSource !== null && await this.popup.isVisible()) {

ext/fg/js/popup-proxy.js

@@ -64,10 +64,6 @@ class PopupProxy {
         return true;
     }
 
-    broadcastRootPopupInformation() {
-        // NOP
-    }
-
     async setOptions(options) {
         return await this._invokeHostApi('setOptions', {id: this._id, options});
     }

ext/fg/js/popup.js

@@ -17,7 +17,6 @@
  */
 
 /* global
- * apiForward
  * apiGetMessageToken
  * apiInjectStylesheet
  */
@@ -69,6 +68,10 @@ class Popup {
         return this._depth;
     }
 
+    get frameId() {
+        return this._frameId;
+    }
+
     get url() {
         return window.location.href;
     }
@@ -79,12 +82,6 @@ class Popup {
         return false;
     }
 
-    broadcastRootPopupInformation() {
-        if (this._depth === 0) {
-            apiForward('rootPopupInformation', {popupId: this._id, frameId: this._frameId});
-        }
-    }
-
     async setOptions(options) {
         this._options = options;
         this.updateTheme();