sessions: add editor part chevron to toggle the secondary side bar#319987
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sandy081 merged 2 commits intoJun 4, 2026
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Add a chevron toggle to the editor part title bar (shown when the editor is in the grid, not as a modal) that expands the editor by collapsing the auxiliary bar (secondary side bar). When the auxiliary bar is visible a chevron-right "Push Editor Right" hides it; once hidden the same slot shows a chevron-left "Show Secondary Side Bar" that restores it. The flip is driven by AuxiliaryBarVisibleContext. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
Adds an editor-titlebar chevron toggle in the Agents window that collapses/expands the secondary side bar (auxiliary bar) to quickly widen the editor area when the editor is shown in the grid.
Changes:
- Register two new editor title-bar actions (chevron right/left) that hide/show the auxiliary bar, switching via
AuxiliaryBarVisibleContext. - Document the new editor-titlebar behavior in
src/vs/sessions/LAYOUT.md. - Add unit tests asserting the new commands call
setPartHidden(..., Parts.AUXILIARYBAR_PART)as expected.
Show a summary per file
| File | Description |
|---|---|
| src/vs/sessions/contrib/editor/browser/editor.contribution.ts | Adds PushEditorRightAction / PullEditorLeftAction to toggle auxiliary bar visibility from the editor title toolbar in the sessions window. |
| src/vs/sessions/contrib/editor/test/browser/editor.contribution.test.ts | Adds tests that validate the new commands hide/show Parts.AUXILIARYBAR_PART. |
| src/vs/sessions/LAYOUT.md | Updates layout spec to describe the new chevron toggle behavior and its context-driven flip. |
Copilot's findings
- Files reviewed: 3/3 changed files
- Comments generated: 0
- Move the auxiliary bar chevron to the right of maximize/restore since it changes the right-hand side of the layout (order 99.5, before close). - Restore the editor's right border and corner radii via a .noauxiliarybar rule so it keeps its card appearance when the auxiliary bar is hidden. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
connor4312
approved these changes
Jun 4, 2026
sandy081
deleted the
agents/implement-a-button-on-the-editor-part-when-ef771f24
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What
Adds a chevron toggle to the editor part title bar in the Agents window (shown when the editor is in the grid, not as a modal) that expands the editor by collapsing the auxiliary bar (secondary side bar).
chevron-rightPush Editor Right hides it.chevron-leftShow Secondary Side Bar that restores it.AuxiliaryBarVisibleContext.The actions live in
MenuId.EditorTitleLayout(right of the tabs) and are gated to the sessions window / main editor group. The auxiliary-bar invariant is only enforced when the editor part becomes visible, so the toggle can collapse the side part while the editor stays open.Why
Gives users a quick way to widen the editor area by hiding the secondary side bar directly from the editor title bar.
Notes for reviewers
src/vs/sessions/contrib/editor/browser/editor.contribution.ts(PushEditorRightAction/PullEditorLeftAction).src/vs/sessions/LAYOUT.md(§5 Editor Modal).editor.contribution.test.ts.compile-check-ts-nativeandvalid-layers-checkpass.Co-authored-by: Copilot 223556219+Copilot@users.noreply.github.com