Replace deselect with more general content access method

fixed-layout.js

@@ -279,9 +279,11 @@ export class FixedLayout extends HTMLElement {
         if (s) this.#reportLocation()
         else return this.goToSpread(this.#index - 1, this.rtl ? 'left' : 'right')
     }
-    deselect() {
-        for (const frame of this.#root.querySelectorAll('iframe'))
-            frame.contentWindow.getSelection().removeAllRanges()
+    getContents() {
+        return Array.from(this.#root.querySelectorAll('iframe'), frame => ({
+            doc: frame.contentDocument,
+            // TODO: index, overlayer
+        }))
     }
     destroy() {
         this.#observer.unobserve(this)

paginator.js

@@ -792,12 +792,13 @@ export class Paginator extends HTMLElement {
         const index = this.sections.findLastIndex(section => section.linear !== 'no')
         return this.goTo({ index })
     }
-    getOverlayer() {
-        if (this.#view) return {
+    getContents() {
+        if (this.#view) return [{
             index: this.#index,
             overlayer: this.#view.overlayer,
             doc: this.#view.document,
-        }
+        }]
+        return []
     }
     setStyle(styles) {
         const $$styles = this.#styleMap.get(this.#view?.document)
@@ -809,10 +810,6 @@ export class Paginator extends HTMLElement {
             $style.textContent = style
         } else $style.textContent = styles
     }
-    deselect() {
-        const sel = this.#view.document.defaultView.getSelection()
-        sel.removeAllRanges()
-    }
     destroy() {
         this.#observer.unobserve(this)
     }

view.js

@@ -148,8 +148,8 @@ export class View extends HTMLElement {
         return this.addAnnotation(annotation, true)
     }
     #getOverlayer(index) {
-        const obj = this.renderer.getOverlayer()
-        if (obj.index === index) return obj
+        return this.renderer.getContents()
+            .find(x => x.index === index && x.overlayer)
     }
     #createOverlayer({ doc, index }) {
         const overlayer = new Overlayer()
@@ -218,7 +218,8 @@ export class View extends HTMLElement {
         }
     }
     deselect() {
-        return this.renderer.deselect?.()
+        for (const { doc } of this.renderer.getContents())
+            doc.defaultView.getSelection().removeAllRanges()
     }
     async getTOCItemOf(target) {
         try {