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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