Fix problems with links from mail

- unsaved links were not properly displayed
- unsaved links could not be removed
- calendar preserved original links, so even if you removed one it came back

api/js/etemplate/Et2Link/Et2LinkList.ts

@@ -152,9 +152,10 @@ export class Et2LinkList extends Et2LinkString
 	 */
 	protected _linkTemplate(link) : TemplateResult
 	{
+		const id = typeof link.id === "string" ? link.id : link.link_id;
 		return html`
             ${this._thumbnailTemplate(link)}
-            <et2-link slot="${this._get_row_id(link)}" app="${link.app}" entry_id="${link.id}"
+            <et2-link slot="${this._get_row_id(link)}" app="${link.app}" entry_id="${id}"
                       ._parent=${this}
                       .value=${link}></et2-link>
             <et2-description slot="${this._get_row_id(link)}" ._parent=${this} class="remark"
@@ -248,7 +249,7 @@ export class Et2LinkList extends Et2LinkString
             <et2-image-expose
                     slot="${this._get_row_id(link)}" ._parent=${this}
                     href="${link.href}"
-                    src=${this.egw().image(link.icon)}></et2-image-expose>`;
+                    src=${this.egw().image("" + link.icon)}></et2-image-expose>`;
 	}
 
 	/**

api/js/etemplate/Et2Link/Et2LinkString.ts

@@ -123,22 +123,36 @@ export class Et2LinkString extends Et2Widget(LitElement) implements et2_IDetache
 		{
 			_value.to_app = this.application;
 		}
-		if(typeof _value == 'object' && !Array.isArray(_value) && _value.to_app && _value.to_id)
+
+		// We have app & ID - fetch list
+		if(typeof _value == 'object' && !Array.isArray(_value) && _value.to_app && _value.to_id && typeof _value.to_id === "string")
 		{
 			this.application = _value.to_app;
 			this.entryId = _value.to_id;
 			this.get_links();
 			return;
 		}
+
+		// CSV list of IDs for one app
 		if(typeof _value === "string")
 		{
 			let ids = _value.split(",");
 			ids.forEach((id) => (<LinkInfo[]>this._link_list).push(<LinkInfo>{app: this.application, id: id}));
 		}
+		// List of LinkInfo
 		else if(Array.isArray(_value))
 		{
 			this._link_list = _value;
 		}
+		// List of LinkInfo stuffed into to_id - entry is not yet saved
+		else if(typeof _value.to_id !== "string")
+		{
+			this.entryId = _value.to_id;
+			Object.keys(_value.to_id).forEach((key) =>
+			{
+				this._link_list.push(<LinkInfo>_value.to_id[key]);
+			});
+		}
 		this._addLinks(this._link_list);
 		super.requestUpdate();
 	}
@@ -170,10 +184,11 @@ export class Et2LinkString extends Et2Widget(LitElement) implements et2_IDetache
 	 * @returns {TemplateResult}
 	 * @protected
 	 */
-	protected _linkTemplate(link) : TemplateResult
+	protected _linkTemplate(link : LinkInfo) : TemplateResult
 	{
+		const id = typeof link.id === "string" ? link.id : link.link_id;
 		return html`
-            <et2-link app="${link.app}" entryId="${link.id}" .value=${link} ._parent=${this}></et2-link>`;
+            <et2-link app="${link.app}" entryId="${id}" .value=${link} ._parent=${this}></et2-link>`;
 	}
 
 	/**

api/src/Link.php

@@ -426,10 +426,11 @@ class Link extends Link\Storage
 			$link_id = self::temp_link_id($app2,$id2);
 
 			$id1[$link_id] = array(
-				'app' => $app2,
+				'app'     => $app2,
-				'id'  => $id2,
+				'id'      => $id2,
-				'remark' => $remark,
+				'title'   => $id2['title'] ?? $id2['name'],
-				'owner'  => $owner,
+				'remark'  => $remark,
+				'owner'   => $owner,
 				'link_id' => $link_id,
 				'lastmod' => time()
 			);

calendar/inc/class.calendar_uiforms.inc.php

@@ -1788,7 +1788,7 @@ class calendar_uiforms extends calendar_ui
 
 		$content['participants']['status_date'] = $preserv['actual_date'];
 		// set notify_externals in participants from cfs
-		if (!empty($event['##notify_externals']))
+		if(!empty($event['##notify_externals']))
 		{
 			$content['participants']['notify_externals'] = $event['##notify_externals'];
 		}
@@ -1796,17 +1796,19 @@ class calendar_uiforms extends calendar_ui
 		{
 			$content['participants']['notify_externals'] = $this->cal_prefs['notify_externals'];
 		}
-		$preserved = array_merge($preserv,$content);
+		$preserved = array_merge($preserv, $content);
+		// Don't preserve link_to, it causes problems if user removes a link
+		unset($preserved['link_to']);
 		$event['new_alarm']['options'] = $content['new_alarm']['options'];
-		if ($event['alarm'])
+		if($event['alarm'])
 		{
 			// makes keys of the alarm-array starting with 1
 			$content['alarm'] = array(false);
 			foreach(array_values($event['alarm']) as $id => $alarm)
 			{
-				if (!$alarm['all'] && !$this->bo->check_perms(Acl::READ,0,$alarm['owner']))
+				if(!$alarm['all'] && !$this->bo->check_perms(Acl::READ, 0, $alarm['owner']))
 				{
-					continue;	// no read rights to the calendar of the alarm-owner, dont show the alarm
+					continue;    // no read rights to the calendar of the alarm-owner, dont show the alarm
 				}
 				$alarm['all'] = (int) $alarm['all'];
 				// fix alarm time in case of alread run alarms, where the time will be their keep_time / when they will be cleaned up otherwise