feat(rules): load a rule into the builder rows

Selecting a rule now parses its stored query and rebuilds the builder
rows from it, and a row edit compiles back onto the query line and into
the working copy.

Populating the form was already able to write the rule just loaded over
whichever rule is current: m_enabled's toggled runs
applyEditsToCurrentRule while m_query still holds the previous rule's
text, which emptied the first rule's query on open. The existing
m_reloading guard now covers the whole load rather than one signal
blocker on the note, which also covers the combo boxes rebuildRows
populates.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/tagrulesdialog.h b/src/tagrulesdialog.h
index b60b095..6676da9 100644
--- a/src/tagrulesdialog.h
+++ b/src/tagrulesdialog.h
@@ -55,6 +55,15 @@ public:
     /// handle and notmuch permits one per process.
     QStringList countQueries() const;
 
+    /// Test seams. The builder's state is otherwise reachable only through
+    /// synthetic clicks on widgets whose geometry the offscreen platform does
+    /// not guarantee.
+    int rowCountForTest() const { return m_rows.size(); }
+    QString queryLineForTest() const;
+
+    /// Selects the rule at `index` as a click on the list would.
+    void selectRuleForTest(int index);
+
 signals:
     /// Asks the owner to run countQueries() through the worker.
     void countsRequested();
@@ -95,6 +104,15 @@ private:
     void updateExclusionsVisibility();
     void syncQueryLine();
 
+    void rebuildRows(const RuleQuery &query);
+    void applyTermToRow(Row *row, const RuleTerm &term);
+    RuleQuery currentQueryFromRows() const;
+
+    /// The query as parsed when the current rule was loaded. Task 10's save
+    /// path compares against this to decide whether the stored string may be
+    /// left alone.
+    RuleQuery m_loadedQuery;
+
     QList<Row> m_rows;
     QList<Row> m_exclusionRows;