In Agent mode: Auto scroll to prompts like 'Continue'.

[raghucssit]

User must be made aware some action is needed from them to continue the work by agent. Usually this happens when "Too many requests" or "Command line run prompt" etc.

see #120

[Copilot]

Pull request overview

This PR improves the Agent-mode chat UX by ensuring the chat view scrolls to the bottom when interactive prompts (e.g., “Continue”, tool confirmations, command-line prompts) appear, so users notice they need to take action.

Changes:

• Force-scroll ChatContentViewer to bottom for Agent-mode (agent rounds) updates, regardless of prior manual scroll state.
• Expose scrollToBottom() publicly and introduce forceScrollToBottom() with delayed follow-up scrolling to handle layout timing.
• Trigger scrolling when tool confirmation dialogs are created/closed so newly revealed controls are visible.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/InvokeToolConfirmationDialog.java	Scrolls the chat viewer after Continue/Cancel actions so follow-up UI is visible.
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/ChatContentViewer.java	Adds forced scrolling behavior for agent rounds; makes scrolling APIs available to child widgets.
com.microsoft.copilot.eclipse.ui/src/com/microsoft/copilot/eclipse/ui/chat/BaseTurnWidget.java	Scrolls the chat viewer to reveal newly created tool confirmation dialogs (prefer showControl).

[raghucssit]

@jdneo I have fixed the copilot review comments..
Please check this PR.

[jdneo]

@raghucssit Thank you. I left some comments.

[iloveeclipse]

@raghucssit: there are checkstyle errors, please check https://github.com/microsoft/copilot-for-eclipse/actions/runs/25695468318/job/75537241263?pr=26

[raghucssit]

I have fixed the problem without changing any existing behavior.
Also I have added a preference for user if they don't want to get notified about any prompt dialog, warning and error they can turn of this auto scroll functionality at preference page Window-->Preferences..-->GitHub Copilot-->General-->Automatically scroll to new confirmation dialogs/prompts in Chat View.

What is the fix ?
All these prompts in question are new widgets on scrolled composite. Whenever they are created we ask scrolled composite to show the newly created windget.

How to test ?
For prompts and warning dialog about too many tool request:

1. Set Agent Max Requests to 2 at Windows-->Preferences..-->GitHub Copilot-->Chat
2. Then use this prompt: I want to reproduce error "Oops, maximum tool attempts reached. You can type "continue" to proceed or rephrase your request." . please run in terminal for 10 seconds each for 3 times. after each command ran print/response some sample 30 lines.
3. This will first ask you to run terminal tool so the prompt dialog appears. Now after first command is ran it prints some lines so cursor may be on top, or you have 10 seconds time you can scroll up and read something for second terminal tool run you will be scrolled down. Before third command runs you should get warning maxiumum tool attempts reached. Again you should be scrolled down to show this warning.

For Error Banner:
It is difficult to reproduce. But used some work around like below.

1. You can launch eclipse run time normally and start doing any work in Chat View.
2. Meanwhile go to command prompt and kill copilot agent.
   search the process: ps aux | grep -i "copilot-agent"
   kill the process: kill -9 <PID from above search>
3. Now return to eclipse and initiate any request at prompt. You should get below dialog.

4. For better checking keep a break point at the beginning of com.microsoft.copilot.eclipse.ui.chat.ChatContentViewer.renderErrorMessage(String) and you can scroll to the top in the Chat View.

[raghucssit]

@jdneo Apologize for the long delay, I was busy at something else.
I have fixed the issue without affecting any existing behavior and also added preference for people to turn off if they don't want.
Build has not run. Please trigger the build if there are any build issues I will fix them.
I have added detailed steps to test the new fix in the above comment.

[raghucssit]

com.microsoft.copilot.eclipse.ui.chat.ChatContentViewer has been redesigned without using scrolled composite. There is a mouse wheel listener is introduced to detect the need of scrolling. The fix which was originally working on this PR needs rework.
However with new design still prompts are not revealed. The problem still remains.
But warning banner like "Maximum tool attempts" is revealed properly. Now I only need to fix the tool prompts.

[raghucssit]

I have fixed the PR by adding new method showControl() basically it will mimic the old showcontrol() fo scrolled composite.

[raghucssit]

@jdneo, Please check this PR. This is pending for long time. There were 2 major refactoring for com.microsoft.copilot.eclipse.ui.chat.ChatContentViewer sincle this PR was created. I had to do lot of refactoring to support it.

[jdneo]

Thank you @raghucssit for your contribution!