Add initial message selecting stuff

ui/message-view.go

@@ -64,6 +64,7 @@ type MessageView struct {
 	messages      []*messages.UIMessage
 	msgBufferLock sync.RWMutex
 	msgBuffer     []*messages.UIMessage
+	selected      *messages.UIMessage
 
 	initialHistoryLoaded bool
 }
@@ -333,15 +334,25 @@ func (view *MessageView) recalculateBuffers() {
 	view.prevPrefs = prefs
 }
 
-func (view *MessageView) handleMessageClick(message *messages.UIMessage) bool {
-	switch msg := message.Renderer.(type) {
-	case *messages.ImageMessage:
-		open.Open(msg.Path())
-	default:
-		debug.Print("Message clicked:", message)
+func (view *MessageView) SetSelected(message *messages.UIMessage) {
+	if view.selected != nil {
+		view.selected.IsSelected = false
 	}
+	view.selected = message
+	if view.selected != nil {
+		view.selected.IsSelected = true
+	}
+}
+
+func (view *MessageView) handleMessageClick(message *messages.UIMessage, mod tcell.ModMask) bool {
+	if msg, ok := message.Renderer.(*messages.ImageMessage); ok && mod > 0 {
+		open.Open(msg.Path())
+		// No need to re-render
 		return false
 	}
+	view.SetSelected(message)
+	return true
+}
 
 func (view *MessageView) handleUsernameClick(message *messages.UIMessage, prevMessage *messages.UIMessage) bool {
 	if prevMessage != nil && prevMessage.Sender() == message.Sender() {
@@ -410,7 +421,7 @@ func (view *MessageView) OnMouseEvent(event mauview.MouseEvent) bool {
 		messageX := usernameX + view.widestSender() + SenderMessageGap
 
 		if x >= messageX {
-			return view.handleMessageClick(message)
+			return view.handleMessageClick(message, event.Modifiers())
 		} else if x >= usernameX {
 			return view.handleUsernameClick(message, prevMessage)
 		}

ui/messages/base.go

@@ -77,6 +77,7 @@ type UIMessage struct {
 	State              event.OutgoingState
 	IsHighlight        bool
 	IsService          bool
+	IsSelected         bool
 	Edited             bool
 	Event              *event.Event
 	ReplyTo            *UIMessage
@@ -316,6 +317,18 @@ func (msg *UIMessage) Draw(screen mauview.Screen) {
 	screen = msg.DrawReply(screen)
 	msg.Renderer.Draw(screen)
 	msg.DrawReactions(screen)
+	if msg.IsSelected {
+		w, h := screen.Size()
+		for x := 0; x < w; x++ {
+			for y := 0; y < h; y++ {
+				mainc, combc, style, _ := screen.GetContent(x, y)
+				_, bg, _ := style.Decompose()
+				if bg == tcell.ColorDefault {
+					screen.SetContent(x, y, mainc, combc, style.Background(tcell.ColorLightSkyBlue))
+				}
+			}
+		}
+	}
 }
 
 func (msg *UIMessage) Clone() *UIMessage {