feat: freezing the list in the backgroud while previewing a file (#3004)

frontend/src/css/styles.css

@@ -152,7 +152,7 @@ main .spinner .bounce2 {
 /* PREVIEWER */
 
 #previewer {
-  background-color: rgba(0, 0, 0, 0.9);
+  background-color: rgba(0, 0, 0, 0.99);
   padding-top: 4em;
   position: fixed;
   top: 0;

frontend/src/views/Files.vue

@@ -3,10 +3,10 @@
     <header-bar v-if="error || req.type == null" showMenu showLogo />
 
     <breadcrumbs base="/files" />
-
+    <listing />
     <errors v-if="error" :errorCode="error.status" />
     <component v-else-if="currentView" :is="currentView"></component>
-    <div v-else>
+    <div v-else-if="currentView !== null">
       <h2 class="message delayed">
         <div class="spinner">
           <div class="bounce1"></div>
@@ -52,13 +52,10 @@ export default {
   computed: {
     ...mapState(["req", "reload", "loading"]),
     currentView() {
-      if (this.req.type == undefined) {
+      if (this.req.type == undefined || this.req.isDir) {
         return null;
       }
-
-      if (this.req.isDir) {
-        return "listing";
-      } else if (
+      else if (
         this.req.type === "text" ||
         this.req.type === "textImmutable"
       ) {
@@ -72,7 +69,26 @@ export default {
     this.fetchData();
   },
   watch: {
-    $route: "fetchData",
+    $route: function (to, from) {
+      if (from.path.endsWith("/")) { 
+        if (to.path.endsWith("/"))   {
+          window.sessionStorage.setItem('listFrozen', "false");
+          this.fetchData();
+          return;
+        } else {
+          window.sessionStorage.setItem('listFrozen', "true");
+          this.fetchData();
+          return;        
+        }
+      } else if (to.path.endsWith("/")) {
+        this.$store.commit("updateRequest", {});
+        this.fetchData();
+        return;
+      } else {
+        this.fetchData();
+        return;
+      } 
+    }, 
     reload: function (value) {
       if (value === true) {
         this.fetchData();
@@ -101,7 +117,9 @@ export default {
       this.$store.commit("closeHovers");
 
       // Set loading to true and reset the error.
-      this.setLoading(true);
+      if (window.sessionStorage.getItem('listFrozen') !=="true"){ 
+        this.setLoading(true);
+      }
       this.error = null;
 
       let url = this.$route.path;

frontend/src/views/files/Listing.vue

@@ -383,17 +383,22 @@ export default {
   },
   watch: {
     req: function () {
-      // Reset the show value
-      this.showLimit = 50;
+      if (window.sessionStorage.getItem('listFrozen') !=="true"){
+        // Reset the show value
+        this.showLimit = 50;
 
-      // Ensures that the listing is displayed
-      Vue.nextTick(() => {
-        // How much every listing item affects the window height
-        this.setItemWeight();
+        // Ensures that the listing is displayed
+        Vue.nextTick(() => {
+          // How much every listing item affects the window height
+          this.setItemWeight();
 
-        // Fill and fit the window with listing items
-        this.fillWindow(true);
-      });
+          // Fill and fit the window with listing items
+          this.fillWindow(true);
+        });
+      }
+      if (this.req.isDir) {
+        window.sessionStorage.setItem('listFrozen', "false"); 
+      }
     },
   },
   mounted: function () {

frontend/src/views/files/Preview.vue

@@ -1,6 +1,8 @@
 <template>
   <div
     id="previewer"
+    @touchmove.prevent.stop 
+    @wheel.prevent.stop
     @mousemove="toggleNavigation"
     @touchstart="toggleNavigation"
   >