SimpleChatTCRV:Cleanup:Delete and Chat UI suitable update

If deleting a non last (and non just before last) message, then
just directly remove the corresponding chat message block from the
ChatSession UI and be done with it.

However if deleting the last (or just before last) message, then
one needs to decide on whether tool call edit/trigger ui is shown
or removed and so... and similarly wrt tool response edit/submit.

tools/server/public_simplechat/readme.md

@@ -760,6 +760,13 @@ sliding window based drop off or even before they kick in, this can help in many
     * have a del button, which allows one to delete the currently in focus chat message.
     * have a copy button, which allows one to copy the textual content into system clipboard.
 
+* MultiChatUI
+  * chat_show takes care of showing or clearing tool call edit / trigger as well as tool response
+    edit / submit. Also show the currently active tool call and its response before it is submit
+    was previously only shown in the edit / trigger and edit / submit ui elements, now instead it
+    also shows as part of the chat session message blocks, so that user can delete or copy these
+    if needed using the same mechanism as other messages in the chat session.
+
 
 #### ToDo
 

tools/server/public_simplechat/simplechat.js

@@ -1212,12 +1212,13 @@ class MultiChatUI {
      */
     show_message(elParent, msg, iFromLast, nextMsg) {
         // Handle ToolTemp
-        if (msg.ns.role === Roles.ToolTemp) {
         if (iFromLast == 0) {
+            if (msg.ns.role === Roles.ToolTemp) {
                 this.elInUser.value = msg.ns.getContent();
-                this.elInUser.dataset.role = Roles.ToolTemp
+            } else {
+                this.elInUser.value = "";
             }
-            return
+            this.elInUser.dataset.role = msg.ns.role
         }
         // Create main section
         let secMain = document.createElement('section')
@@ -1274,7 +1275,7 @@ class MultiChatUI {
             img.src = msg.ns.image_url
             secContents?.append(img)
         }
-        // Handle tool call ui, if reqd
+        // Handle tool call edit/trigger ui, if reqd
         let bTC = false
         let bAuto = false
         if (msg.ns.role === Roles.Assistant) {
@@ -1290,8 +1291,8 @@ class MultiChatUI {
                 this.ui_reset_toolcall_as_needed(msg, bAuto);
             }
         }
-        // Handle tool call non ui
+        // Handle tool call message show
-        if (msg.ns.tool_calls && !bTC) {
+        if (msg.ns.tool_calls) {
             for (const tc of msg.ns.tool_calls) {
                 this.show_message_toolcall(secContents, tc)
             }
@@ -1322,8 +1323,8 @@ class MultiChatUI {
         let chat = this.simpleChats[this.curChatId];
         if (bClear) {
             this.elDivChat.replaceChildren();
-            this.ui_reset_toolcall_as_needed(new ChatMessageEx());
         }
+        this.ui_reset_toolcall_as_needed(new ChatMessageEx());
         this.elLastChatMessage = null
         let chatToShow = chat.recent_chat(this.me.chatProps.iRecentUserMsgCnt);
         for(const [i, x] of chatToShow.entries()) {
@@ -1348,14 +1349,19 @@ class MultiChatUI {
 
     /**
      * Remove the specified ChatMessage block in ui, without needing to show full chat session again.
+     * @param {string} curChatId
      * @param {number} uniqIdChatMsg
      */
-    ui_chatmessage_delete(uniqIdChatMsg) {
+    ui_chatmessage_delete(curChatId, uniqIdChatMsg) {
-        let index = this.simpleChats[this.curChatId].delete(uniqIdChatMsg)
+        let index = this.simpleChats[curChatId].delete(uniqIdChatMsg)
-        if (index >= 0) {
+        if ((index >= 0) && (curChatId == this.curChatId)) {
-            let el = document.querySelector(`[CMUniqId="${uniqIdChatMsg}"`)
+            let el = document.querySelector(`[CMUniqId="${uniqIdChatMsg}"]`)
-            console.log(el)
             el?.remove()
+            if (index >= (this.simpleChats[curChatId].xchat.length-1)) {
+                // so that tool call edit/trigger control etal can be controlled suitably
+                // from a single place - need to add that centrally controlled logic flor still.
+                this.chat_show(curChatId)
+            }
         }
     }
 
@@ -1455,7 +1461,7 @@ class MultiChatUI {
 
         this.elPopoverChatMsgDelBtn.addEventListener('click', (ev) => {
             console.log(`DBUG:MCUI:ChatMsgPO:Del:${this.curChatId}:${this.uniqIdChatMsgPO}`)
-            this.ui_chatmessage_delete(this.uniqIdChatMsgPO)
+            this.ui_chatmessage_delete(this.curChatId, this.uniqIdChatMsgPO)
         })
 
         this.elPopoverChatMsgCopyBtn.addEventListener('click', (ev) => {