From f6ce45309e3d0c2b165aaa1d4d3ac24ba08d466f Mon Sep 17 00:00:00 2001
From: Zéro~Informatique
Date: Sun, 27 Nov 2022 21:00:56 +0100
Subject: viewer/epub: resize on drawer movement

Fixed data leaks (view.innerHTML + rendered event)
---
 .../views/item_handlers/async/AsyncEpubViewer.vue  | 39 +++++++++++++---------
 1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/viewer/src/views/item_handlers/async/AsyncEpubViewer.vue b/viewer/src/views/item_handlers/async/AsyncEpubViewer.vue
index 712a844..20b1bee 100644
--- a/viewer/src/views/item_handlers/async/AsyncEpubViewer.vue
+++ b/viewer/src/views/item_handlers/async/AsyncEpubViewer.vue
@@ -52,43 +52,50 @@
 </template>
 
 <script setup lang="ts">
-
 import { EPUBItem } from '@/@types/gallery';
 import { useItemResource } from '@/services/ui/ldItemResourceUrl';
-import ePub from 'epubjs';
+import { useUiStore } from '@/store/uiStore';
+import ePub, { Rendition } from 'epubjs';
 import { SpineItem } from 'epubjs/types/section';
-import { PropType, Ref, ref, toRef, computed, watchEffect } from 'vue';
+import { computed, PropType, Ref, ref, toRef, watch } from 'vue';
 import { useI18n } from 'vue-i18n';
+
 const { t } = useI18n();
+const uiStore = useUiStore();
 
 const props = defineProps({
   item: { type: Object as PropType<EPUBItem>, required: true },
 });
 
 const { itemResourceUrl } = useItemResource(toRef(props, 'item'));
+
 const view = ref<HTMLDivElement>();
+const rendition = ref<Rendition>();
+const currSection = ref<SpineItem>();
+const prevSection = ref<SpineItem>();
+const nextSection = ref<SpineItem>();
 
 const book = computed(() => ePub(itemResourceUrl.value));
 
-const rendition = computed(() => {
-  if (!view.value) return;
-  return book.value.renderTo(view.value, {
+watch([book, view], ([book, view]) => {
+  if (!view) return;
+  view.innerHTML = '';
+  rendition.value = book.renderTo(view, {
     flow: 'scrolled-doc',
     width: '100%',
-    fullsize: true,
   });
 });
 
-const currSection = ref<SpineItem>();
-const prevSection = ref<SpineItem>();
-const nextSection = ref<SpineItem>();
-
-// TODO: reflow on side panel open/close event, like when resizing the window
+watch(rendition, async(rendition, oldRendition) => {
+  if (!rendition) return;
+  oldRendition?.off('rendered', updateNavigation);
+  await rendition.display();
+  rendition.on('rendered', updateNavigation);
+});
 
-watchEffect(async() => {
-  if (!rendition.value) return;
-  await rendition.value.display();
-  rendition.value.on('rendered', updateNavigation);
+watch(() => uiStore.fullWidth, () => {
+  // Simulate a window resize to force EPub to resize the container
+  setTimeout(() => window.dispatchEvent(new Event('resize')));
 });
 
 function updateNavigation(currentSection: SpineItem) {
-- 
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