UI: Re-use sharing cache for individual shares

This should reduce network usage in some situations.

radicale/web/internal_data/js/scenes/CreateEditShareScene.js

@@ -204,11 +204,7 @@ export class CreateEditShareScene {
                 if (error) {
                     this._errorHandler.setError(error);
                 } else {
-                    // On any share-to-self (currently only bday conversion), invalidate the
-                    // collections cache so the virtual calendar appears immediately.
-                    if (this._shareuser_input.value === this._user) {
-                        collectionsCache.invalidate();
-                    }
+                    collectionsCache.invalidate();
                     pop_scene();
                 }
             };

radicale/web/internal_data/js/scenes/IncomingSharingScene.js

@@ -146,7 +146,7 @@ export class IncomingSharingScene {
         this._html_scene.classList.remove("hidden");
         this._close_btn.onclick = () => pop_scene();
         this._error_handler.clearError();
-        collectionsCache.getIncomingShares(this._user, this._password, this._error_handler.setError, (shares) => this._render_shares(shares));
+        collectionsCache.getSharingList(this._user, this._password, this._error_handler.setError, (shares) => this._render_shares(shares));
     }
 
     hide() {

radicale/web/internal_data/js/scenes/ShareCollectionScene.js

@@ -22,8 +22,8 @@
 import {
   delete_share_by_map,
   delete_share_by_token,
-  reload_sharing_list,
 } from "../api/sharing.js";
+import { collectionsCache } from "../utils/collections_cache.js";
 import { Collection, Permission } from "../models/collection.js";
 import { extract_title } from "../utils/collection_utils.js";
 
@@ -154,12 +154,10 @@ function update_share_list(user, password, collection, errorHandler) {
     }
   });
 
-  reload_sharing_list(user, password, collection, function (shares, error) {
-    if (error) {
-      errorHandler.setError(error);
-    } else {
-      add_share_rows(user, password, collection, shares, errorHandler);
-    }
+  collectionsCache.getSharingList(user, password, (error) => {
+    errorHandler.setError(error);
+  }, function (shares) {
+    add_share_rows(user, password, collection, shares);
   });
 }
 
@@ -172,10 +170,9 @@ function update_share_list(user, password, collection, errorHandler) {
  * @param {HTMLElement} template 
  * @param {string} delete_label 
  * @param {function(string, string, import('../api/sharing.js').Share, function(?string):void):void} delete_action 
- * @param {ErrorHandler} errorHandler
  * @param {function():void} [onDeleteSuccess] Optional extra callback after a successful delete.
  */
-function add_share_row_node(user, password, collection, share, template, delete_label, delete_action, errorHandler, onDeleteSuccess) {
+function add_share_row_node(user, password, collection, share, template, delete_label, delete_action, onDeleteSuccess) {
   let pathortoken = share["PathOrToken"] || "";
   let node = /** @type {HTMLElement} */ (template.cloneNode(true));
   node.classList.remove("hidden");
@@ -201,8 +198,8 @@ function add_share_row_node(user, password, collection, share, template, delete_
       user, password, "Delete Share", share, delete_label + " " + pathortoken, delete_action, false,
       function () {
         if (onDeleteSuccess) onDeleteSuccess();
+        collectionsCache.invalidate();
         pop_scene();
-        update_share_list(user, password, collection, errorHandler);
       }
     );
     push_scene(delete_collection_scene);
@@ -218,9 +215,8 @@ function add_share_row_node(user, password, collection, share, template, delete_
  * @param {?string} password 
  * @param {Collection} collection 
  * @param {Array<import('../api/sharing.js').Share>} shares 
- * @param {ErrorHandler} errorHandler
  */
-function add_share_rows(user, password, collection, shares, errorHandler) {
+function add_share_rows(user, password, collection, shares) {
   /** @type {HTMLElement} */ let token_template = get_element(document, "[data-name=sharetokenrowtemplate]");
   /** @type {HTMLElement} */ let map_template = get_element(document, "[data-name=sharemaprowtemplate]");
   shares.forEach(function (share) {
@@ -235,10 +231,10 @@ function add_share_rows(user, password, collection, shares, errorHandler) {
       decodedHref.includes(decodedPathOrToken)
     ) {
       if (share["ShareType"] === "token") {
-        add_share_row_node(user, password, collection, share, token_template, "share", delete_share_by_token, errorHandler);
+        add_share_row_node(user, password, collection, share, token_template, "share", delete_share_by_token);
       }
       else if (share["ShareType"] === "map") {
-        add_share_row_node(user, password, collection, share, map_template, "map", delete_share_by_map, errorHandler);
+        add_share_row_node(user, password, collection, share, map_template, "map", delete_share_by_map);
       }
     }
   });

radicale/web/internal_data/js/utils/collections_cache.js

@@ -31,6 +31,8 @@ class CollectionsCache {
         this.server_features = null;
         /** @type {?XMLHttpRequest} */ this.collections_req = null;
         /** @type {?XMLHttpRequest} */ this.shares_req = null;
+        /** @type {?Array<{ onerror: function(string):void, displayData: function(Array<import("../api/sharing.js").Share>):void }>} */
+        this._sharing_callbacks = null;
     }
 
     invalidate() {
@@ -45,6 +47,7 @@ class CollectionsCache {
             this.shares_req.abort();
             this.shares_req = null;
         }
+        this._sharing_callbacks = null;
     }
 
     /**
@@ -105,27 +108,31 @@ class CollectionsCache {
      * @param {function(string):void} onerror
      * @param {function(Array<import("../api/sharing.js").Share>):void} displayData
      */
-    getIncomingShares(user, password, onerror, displayData) {
+    getSharingList(user, password, onerror, displayData) {
         if (this.incoming_shares !== null) {
             displayData(this.incoming_shares);
             return;
         }
 
-        let loading_scene = new LoadingScene();
-        push_scene(loading_scene);
+        if (!this._sharing_callbacks) {
+            this._sharing_callbacks = [];
+        }
+        this._sharing_callbacks.push({ onerror, displayData });
+
+        if (this.shares_req) {
+            return;
+        }
 
         this.shares_req = reload_sharing_list(user, password, null, (shares, error) => {
-            if (!is_current_scene(loading_scene)) {
-                return;
-            }
             this.shares_req = null;
+            let callbacks = this._sharing_callbacks || [];
+            this._sharing_callbacks = null;
+
             if (error) {
-                onerror(error);
-                pop_scene();
+                callbacks.forEach(cb => cb.onerror(error));
             } else {
                 this.incoming_shares = shares;
-                displayData(this.incoming_shares);
-                pop_scene();
+                callbacks.forEach(cb => cb.displayData(shares));
             }
         });
     }