open menu when clicking ... button on message with delete/cancel option

src/platform/web/ui/css/themes/element/timeline.css

@@ -49,12 +49,13 @@ limitations under the License.
     }
 }
 
-.Timeline_message:hover, .Timeline_message.selected {
+.Timeline_message:hover, .Timeline_message.selected, .Timeline_message.menuOpen {
     background-color: rgba(141, 151, 165, 0.1);
     border-radius: 4px;
 }
 
-.Timeline_message:hover > .Timeline_messageOptions {
+.Timeline_message:hover > .Timeline_messageOptions,
+.Timeline_message.menuOpen > .Timeline_messageOptions {
     display: block;
 }
 

src/platform/web/ui/general/Popup.js

@@ -30,13 +30,14 @@ const VerticalAxis = {
 };
 
 export class Popup {
-    constructor(view) {
+    constructor(view, closeCallback = null) {
         this._view = view;
         this._target = null;
         this._arrangement = null;
         this._scroller = null;
         this._fakeRoot = null;
         this._trackingTemplateView = null;
+        this._closeCallback = closeCallback;
     }
 
     trackInTemplateView(templateView) {
@@ -82,6 +83,9 @@ export class Popup {
             document.body.removeEventListener("click", this, false);
             this._popup.remove();
             this._view = null;
+            if (this._closeCallback) {
+                this._closeCallback();
+            }
         }
     }
 

src/platform/web/ui/session/room/TimelineList.js

@@ -45,6 +45,7 @@ export class TimelineList extends ListView {
         const options = {
             className: "Timeline bottom-aligned-scroll",
             list: viewModel.tiles,
+            onItemClick: (tileView, evt) => tileView.onClick(evt),
         }
         super(options, entry => {
             const View = viewClassForEntry(entry);

src/platform/web/ui/session/room/timeline/AnnouncementView.js

@@ -20,4 +20,7 @@ export class AnnouncementView extends TemplateView {
     render(t) {
         return t.li({className: "AnnouncementView"}, t.div(vm => vm.announcement));
     }
+    
+    /* This is called by the parent ListView, which just has 1 listener for the whole list */
+    onClick() {}
 }

src/platform/web/ui/session/room/timeline/BaseMessageView.js

@@ -17,8 +17,15 @@ limitations under the License.
 
 import {renderStaticAvatar} from "../../../avatar.js";
 import {TemplateView} from "../../../general/TemplateView.js";
+import {Popup} from "../../../general/Popup.js";
+import {Menu} from "../../../general/Menu.js";
 
 export class BaseMessageView extends TemplateView {
+    constructor(value) {
+        super(value);
+        this._menuPopup = null;
+    }
+
     render(t, vm) {
         const classes = {
             "Timeline_message": true,
@@ -36,7 +43,46 @@ export class BaseMessageView extends TemplateView {
         ]);   
     }
 
-    renderMessageBody() {
-
+    /* This is called by the parent ListView, which just has 1 listener for the whole list */
+    onClick(evt) {
+        if (evt.target.className === "Timeline_messageOptions") {
+            this._toggleMenu(evt.target);
+        }
     }
+
+    _toggleMenu(button) {
+        if (this._menuPopup && this._menuPopup.isOpen) {
+            this._menuPopup.close();
+        } else {
+            const options = this.createMenuOptions(this.value);
+            if (!options.length) {
+                return;
+            }
+            this.root().classList.add("menuOpen");
+            this._menuPopup = new Popup(new Menu(options), () => this.root().classList.remove("menuOpen"));
+            this._menuPopup.trackInTemplateView(this);
+            this._menuPopup.showRelativeTo(button, {
+                horizontal: {
+                    relativeTo: "end",
+                    align: "start",
+                    after: 0
+                },
+                vertical: {
+                    relativeTo: "start",
+                    align: "end",
+                    before: -24
+                }
+            });
+        }
+    }
+
+    createMenuOptions(vm) {
+        const options = [];
+        if (vm.shape !== "redacted") {
+            options.push(Menu.option(vm.i18n`Delete`, () => vm.redact()));
+        }
+        return options;
+    }
+
+    renderMessageBody() {}
 }

src/platform/web/ui/session/room/timeline/RedactedView.js

@@ -15,10 +15,18 @@ limitations under the License.
 */
 
 import {BaseMessageView} from "./BaseMessageView.js";
+import {Menu} from "../../../general/Menu.js";
 
 export class RedactedView extends BaseMessageView {
     renderMessageBody(t, vm) {
-        const cancelButton = t.if(vm => vm.isRedacting, t => t.button({onClick: () => vm.abortPendingRedaction()}, "Cancel"));
-        return t.p({className: "Timeline_messageBody statusMessage"}, [vm => vm.description, " ", cancelButton]);
+        return t.p({className: "Timeline_messageBody statusMessage"}, vm => vm.description);
+    }
+
+    createMenuOptions(vm) {
+    	const options = super.createMenuOptions(vm);
+    	if (vm.isRedacting) {
+    		options.push(Menu.option(vm.i18n`Cancel`, () => vm.abortPendingRedaction()));
+    	}
+    	return options;
     }
 }