1 files changed, 98 insertions, 0 deletions
diff --git a/src/tagrulesdialog.h b/src/tagrulesdialog.h
new file mode 100644
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--- /dev/null
+++ b/src/tagrulesdialog.h
@@ -0,0 +1,98 @@
+/*
+ * qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
+ * Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <QDialog>
+
+#include "tagrules.h"
+
+class QCheckBox;
+class QLabel;
+class QLineEdit;
+class QPlainTextEdit;
+class QPushButton;
+class QSpinBox;
+class QTreeWidget;
+class QTreeWidgetItem;
+
+/// Views and edits the shared auto-tagging rules.
+///
+/// Does NOT apply rules to existing mail. The counts are shown so a rule can be
+/// judged before it runs, but the only thing that tags mail is the notmuch
+/// post-new hook. Backfill is deliberately out of this version: a rule that is
+/// safe against arrivals is not automatically safe unscoped, and the
+/// confirmation story for a bulk write does not exist yet.
+class TagRulesDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit TagRulesDialog(QWidget *parent = nullptr);
+
+    /// The queries whose message counts the dialog wants, in the order its
+    /// rows appear. MainWindow hands these to the worker; the dialog never
+    /// touches the database itself, because NotmuchWorker owns the only
+    /// handle and notmuch permits one per process.
+    QStringList countQueries() const;
+
+signals:
+    /// Asks the owner to run countQueries() through the worker.
+    void countsRequested();
+
+public slots:
+    /// Corpus counts, positionally paired with countQueries().
+    void setCounts(const QVector<int> &counts);
+
+private slots:
+    void onSelectionChanged();
+    void onAddRule();
+    void onCopyRule();
+    void onDeleteRule();
+    void applyEditsToCurrentRule();
+    void onSave();
+
+private:
+    void reloadList();
+    void showWarnings();
+    int currentIndex() const;
+
+    /// Writes one rule's summary onto its row. Shared by reloadList() and
+    /// applyEditsToCurrentRule() so the two cannot render a rule differently.
+    void fillItem(QTreeWidgetItem *item, const TagRule &rule) const;
+
+    TagRules m_rules;
+    QList<TagRule> m_working;   ///< Edited copy; written only on Save.
+
+    /// True while reloadList() is repopulating the tree. The row it selects
+    /// afterwards emits currentItemChanged, and onSelectionChanged() would
+    /// then load a rule into the form while the form still holds the previous
+    /// row's text, which applyEditsToCurrentRule() has no chance to flush.
+    bool m_reloading = false;
+
+    QTreeWidget *m_list = nullptr;
+    QLineEdit *m_id = nullptr;
+    QLineEdit *m_add = nullptr;
+    QLineEdit *m_remove = nullptr;
+    QLineEdit *m_query = nullptr;
+    QPlainTextEdit *m_note = nullptr;
+    QSpinBox *m_stage = nullptr;
+    QCheckBox *m_enabled = nullptr;
+    QLabel *m_warningLabel = nullptr;
+    QPushButton *m_saveButton = nullptr;
+};