KEYBOARD SHORTCUTS

Context

Beta-tester feedback on K3 3.0 beta: there is no quick way to go back one step. To leave a page the user must reach a far-away Close button with the mouse.

This spec binds Esc to the same path as that Close button, without interfering with Esc in dialogs, menus, popups or input-method composition. It adds no new behaviour: Esc is only a second trigger for an action that already exists. Approved by the maintainer on 2026-09-24.

K2 is out of scope: it is built on tabs and has no notion of going back.

Reading the requirement IDs. Each requirement has a permanent ID. IDs are never renumbered or reused; a retired requirement is marked [Removed], not deleted. Status is one of [Implemented] / [Planned] / [Backlog] / [Removed].

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Scope at a glance

In scope: the Esc key in K3 (qt_quick/) as a trigger for the existing Close action of overlay layers and pages, or the existing Cancel action on Device Edit; the guards that leave Esc to open popups and to input-method composition; Ctrl+E (Cmd+E on macOS) on the Search Results page as a second trigger of the existing "Explore folder" row action (SRS-F7/SRS-F8, SpecSearchResults.md), added 2026-10-13.

Out of scope: K2 (qt_widgets/). Any other shortcut. The existing Quit and Find (Ctrl+F) bindings are not specified here. Ctrl+F is an open question, recorded in SpecBacklogNotes.md and not a requirement.

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Operational requirements — why / for whom

ID	Requirement	Status
KBS-O1	A user can go back one step from the page they are on with the keyboard, without moving the mouse to a far-away Close button.	[Implemented]
KBS-O2	A user browsing Search results with the keyboard can jump to the selected result's folder in Explore without opening the context menu. Requested in beta feedback #3; approved by the user on 2026-10-13.	[Implemented]

Functional requirements — what the system does

ID	Requirement	Status
KBS-F1	Esc triggers exactly the action of the visible Close button of the last open page, or of Cancel on Device Edit. The target is chosen in this order: (1) if an overlay layer is open (Settings, About, Backup mapping form, Backup preview form, or Tags opened from Explore by "Tag this folder" — EXP-F23, SpecExplore.md), that layer's Close (Tags layer added 2026-10-10); (2) otherwise the rightmost page in the page stack: Results goes back to Search; Search to Selection; Devices, Explore, Create, Statistics, Tags and Backup to Selection, except Explore opened from Results by "Explore folder" (SRS-F8, SpecSearchResults.md), whose Close goes back to Results (amended 2026-10-03); Device Edit runs its Cancel; (3) with Selection as the only page, Esc does nothing.	[Implemented]
KBS-F2	On Device Edit and Create, Esc discards unsaved input exactly as their Cancel and Close buttons do today. No confirmation is added. This is a deliberate maintainer decision.	[Implemented]
KBS-F3	Esc pressed while a text field has focus still closes the page, per KBS-F1. The exception is input-method composition: while text is being composed, the input method keeps Esc and the page stays open. (The input-method composition exception is not yet verified.)	[Implemented]
KBS-F4	Any open popup keeps its own Esc: a dialog (modal or not), a menu, a combo dropdown, or another popup such as the Search Results catalogs filter. That Esc closes only the popup; the page underneath stays open.	[Implemented]
KBS-F5	On the Search Results page, Ctrl+E (Cmd+E on macOS) triggers exactly the "Explore folder" action (SRS-F8) for the table's selected row. It acts only under the SRS-F7 condition: a row is selected and it belongs to a catalog device. Otherwise it does nothing. It works whether or not the table has focus, and only while Results is the current page. It does not fire while a popup, menu or dialog is open (as KBS-F4).	[Implemented]
KBS-F6	The "Explore folder" entry of the Results row context menu shows the Ctrl+E shortcut hint, in the platform's native shortcut text, where the Qt Quick Controls style displays shortcuts.	[Implemented]

Constructional requirements — how it is built / limits / MUST-NOTs

ID	Requirement	Status
KBS-C1	Esc MUST call the existing Close or Cancel handler of its target, for example closeFeaturePage() or the Search and Results Close actions in qt_quick/Main.qml. The close logic MUST NOT be duplicated or reimplemented.	[Implemented]
KBS-C2	No user-visible string is added, changed or removed.	[Implemented]
KBS-C3	One press of Esc closes at most one layer or page. Kirigami's own handling MUST NOT also close something on the same press. (Measured on 2026-09-24 with an offscreen QtTest probe on Qt 6.11.2 and the installed Kirigami: Kirigami does not pop a layer on Esc by itself.)	[Implemented]
KBS-C4	Esc MUST NOT stop or cancel a running operation. It never triggers the Create page's Stop, the Backup page footer's Cancel for a running preview, or the activity panel's Stop. Closing a page leaves the work running, as OPQ-O6 requires.	[Implemented]
KBS-C5	K2 (qt_widgets/) MUST NOT change. Its only shortcut remains Quit (qt_widgets/mainwindow.cpp:127).	[Implemented]
KBS-C6	Ctrl+E MUST call the same handler and use the same enable condition as the "Explore folder" menu entry (pageSearchResults_column.exploreFolderRequested, appManager1.searchRowDeviceId(row) > 0). It MUST NOT duplicate or reimplement the Explore opening (SRS-C3). It adds no user-visible string (the hint is Qt's native key text). It changes nothing in core/ or qt_widgets/, creates no new file and adds no settings key.	[Implemented]

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Evidence

An offscreen QtTest probe on Qt 6.11.2 with the installed Kirigami (2026-09-24) showed the following:

• A window-level Shortcut for Esc does not fire while a Menu, a modal or non-modal Dialog, or a ComboBox popup is open. The popup closes instead, which matches KBS-F4.
• The same shortcut does fire when a TextField has focus, which matches KBS-F3.
• Kirigami does not pop a layer on Esc by itself, which matches KBS-C3.
• Input-method composition was not tested. The KBS-F3 exception is still unverified.

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Manual test charter

• KBS-F1 (layers): open Settings, then press Esc: Settings closes. Repeat for About, the Backup mapping form and the Backup preview form. From Explore, use "Tag this folder" on a directory tree row, then press Esc: the Tags layer closes and you are back on Explore, same folder (EXP-F23).
• KBS-F1 (pages): open Search, run a search to open Results, then press Esc three times. You land on Search, then Selection, then nothing more happens. Open each of Devices, Explore, Create, Statistics, Tags and Backup: Esc returns to Selection. From Results, use "Explore folder", then press Esc: you are back on Results, unchanged. With Selection alone, Esc does nothing.
• KBS-F2: type into Device Edit, then press Esc: the edit is discarded as with Cancel. Repeat on Create.
• KBS-F3: focus a text field on Search, then press Esc: the page closes. With an input method (for example a CJK IME), start composing and press Esc: the composition is cancelled and the page stays open.
• KBS-F4: with a dialog, a context menu, a combo dropdown and the Search Results catalogs filter each open in turn, press Esc. Only the popup closes.
• KBS-C1 / C2: grep qt_quick/ for the Esc binding. It calls the existing handlers and nothing else. ninja translations_lupdate shows no new source text.
• KBS-C3: on every layer and page, one Esc goes back exactly one step.
• KBS-C4: start a catalog creation and press Esc on Create. The page closes and the creation carries on in the activity panel. Repeat on Backup while a preview runs.
• KBS-C5: K2's diff is empty.
• KBS-F5: on Results, select (by mouse or arrow keys) a catalog result and press Ctrl+E (Cmd+E on macOS). Explore opens on its folder, as with the menu entry. Press Esc: you are back on Results. Select a result of a search run directly on a disk folder and press Ctrl+E: nothing happens. Click outside the table so it loses focus, then press Ctrl+E: it still works. With the context menu or the catalogs filter open, Ctrl+E does nothing. On any page other than Results, Ctrl+E does nothing.
• KBS-F6: right-click a result. "Explore folder" shows Ctrl+E (⌘E on macOS) where the style supports it.
• KBS-C6: ninja translations_lupdate shows no new source text. The core/ and qt_widgets/ diffs are empty. The shortcut's handler is the menu entry's handler.