Implement GNOME's 4-tier destructive-action pattern: undo toasts instead of confirmation dialogs, AdwAlertDialog for irreversible actions. Use when adding delete, remove, clear, or other destructive actions.
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Python:
toast = Adw.Toast.new("Image moved to trash")
toast.set_button_label("Undo")
toast.set_priority(Adw.ToastPriority.HIGH)
toast.connect("button-clicked", lambda t: restore_from_trash())
toast_overlay.add_toast(toast)
Rust (Loupe pattern):
let toast = adw::Toast::builder()
.title(gettext("Image moved to trash"))
.button_label(gettext("Undo"))
.priority(adw::ToastPriority::High)
.build();
toast.connect_button_clicked(move |_| { restore_file(); });
self.window_add_toast(toast);
Rules: Toast at bottom-center. Short title. Only Undo button. Priority HIGH. NO confirmation dialog first.
Blueprint:
Adw.PreferencesGroup {
Adw.ButtonRow {
title: _("_Clear History");
use-underline: true;
styles ["destructive-action"];
activated => $on_clear_cb(template);
}
}
XML:
<object class="AdwButtonRow">
<property name="title" translatable="yes">_Clear History</property>
<property name="use-underline">True</property>
<style><class name="destructive-action"/></style>
</object>
Blueprint:
Button remove_button {
label: _("Remove");
styles ["destructive-action", "pill"];
}
XML:
<object class="GtkButton">
<property name="label" translatable="yes">Remove</property>
<style><class name="destructive-action"/><class name="pill"/></style>
</object>
Blueprint:
Button {
icon-name: "window-close-symbolic";
tooltip-text: _("Remove");
styles ["circular", "flat"];
}
XML:
<object class="GtkButton">
<property name="icon-name">window-close-symbolic</property>
<property name="tooltip-text" translatable="yes">Remove</property>
<style><class name="circular"/><class name="flat"/></style>
</object>
<item>
<attribute name="label" translatable="yes">_Clear History</attribute>
<attribute name="action">win.clear</attribute>
<attribute name="hidden-when">action-disabled</attribute>
</item>
<object class="GtkInfoBar">
<property name="message-type">warning</property>
<property name="revealed">True</property>
<property name="show-close-button">True</property>
<!-- Bold title label + subtitle label -->
<child type="action">
<object class="GtkButton">
<property name="label" translatable="yes">_Discard…</property>
<property name="use-underline">True</property>
</object>
</child>
</object>
| Action | Icon |
|---|---|
| Remove from list | window-close-symbolic |
| Delete permanently | edit-delete-symbolic |
| Clear all | edit-clear-all-symbolic |
| Move to trash | user-trash-symbolic |
Prefer undo over confirmation. Only use confirmation dialogs when undo is truly impossible.
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Add a standard AdwAboutDialog wired to app metadata, plus the AppStream metainfo file it should share data with. Use when adding an About entry, release notes, credits, or preparing app metadata.
中文简介正在准备中。当前显示原文说明。
Make a GTK4/libadwaita app accessible — accessible labels and roles, tooltips on icon-only buttons, keyboard navigation, contrast, and testing with Orca/Accerciser. Use when fixing a11y issues or running the accessibility category of a HIG audit.
中文简介正在准备中。当前显示原文说明。
Responsive GNOME layouts: AdwBreakpoint conditions, BreakpointBin, MultiLayoutView, BottomSheet, narrow/wide layout swaps. Use when making an app work on phones or narrow windows.
中文简介正在准备中。当前显示原文说明。
Onboarding tour with AdwCarousel and navigation dots, skippable welcome screens. Use when adding a first-run tour or feature showcase to a GNOME app.
中文简介正在准备中。当前显示原文说明。
Loading, empty, and error states with AdwStatusPage and AdwSpinner — placeholder icons, titles, action buttons. Use when an app view can be empty, loading, or failed.
中文简介正在准备中。当前显示原文说明。
Package a GNOME app as a Flatpak — manifest for the GNOME runtime, sandbox permissions, build/run/test loop, and Flathub submission checklist. Use when packaging, distributing, or preparing a GNOME app for Flathub.
中文简介正在准备中。当前显示原文说明。