More work on LibreOffice support.

internal/presentation/libreoffice.go

@@ -49,3 +49,30 @@ func libreOfficeFocusSnapshot(snapshot atspi.Snapshot, options Options) atspi.Sn
 	}
 	return snapshot
 }
+
+// LibreOfficeCellFormula limits Office presentation to verified Calc cells.
+func LibreOfficeCellFormula(snapshot atspi.Snapshot) string {
+	context := snapshot.LibreOffice
+	if !atspi.IsLibreOfficeProcess(snapshot.ApplicationProcess) || snapshot.Defunct ||
+		snapshot.Role != "table cell" || context == nil || !context.InSpreadsheet || !context.Cell {
+		return ""
+	}
+	return context.Formula
+}
+
+// LibreOfficeFormulaText follows Orca's explicit formula command: non-formula
+// cells report their value, including "empty" when there is no value.
+func LibreOfficeFormulaText(snapshot atspi.Snapshot) string {
+	context := snapshot.LibreOffice
+	if !atspi.IsLibreOfficeProcess(snapshot.ApplicationProcess) || snapshot.Defunct ||
+		snapshot.Role != "table cell" || context == nil || !context.InSpreadsheet || !context.Cell {
+		return "Not in a table."
+	}
+	if formula := LibreOfficeCellFormula(snapshot); formula != "" {
+		return formula
+	}
+	if strings.TrimSpace(context.CellText) != "" {
+		return context.CellText
+	}
+	return "empty"
+}

internal/presentation/libreoffice_test.go

@@ -44,3 +44,49 @@ func TestLibreOfficePresentationRequiresVerifiedCellContext(t *testing.T) {
 		}
 	}
 }
+
+func TestLibreOfficeFormulaPresentation(t *testing.T) {
+	for _, value := range []string{"43", ""} {
+		snapshot := atspi.Snapshot{Role: "table cell", ApplicationProcess: "soffice.bin",
+			LibreOffice: &atspi.LibreOfficeContext{InSpreadsheet: true, Cell: true,
+				Coordinates: "C1", CellText: value, Formula: "=B1+1"}}
+		want := value + ", C1, has formula"
+		if value == "" {
+			want = "blank, C1, has formula"
+		}
+		if got := FocusText(snapshot); got != want {
+			t.Fatalf("formula cell = %q, want %q", got, want)
+		}
+		if got := LibreOfficeFormulaText(snapshot); got != "=B1+1" {
+			t.Fatalf("formula command = %q", got)
+		}
+		options := DefaultOptions()
+		reading := config.DefaultSettings().Reading
+		reading.OnlySpeakDisplayedText = true
+		options.Reading = &reading
+		if got := FocusTextWithOptions(snapshot, options); got != value {
+			t.Fatalf("displayed text includes formula metadata: %q", got)
+		}
+		snapshot.LibreOffice.Formula = ""
+		want = value
+		if value == "" {
+			want = "empty"
+		}
+		if got := LibreOfficeFormulaText(snapshot); got != want {
+			t.Fatalf("non-formula command = %q, want %q", got, want)
+		}
+	}
+	for _, snapshot := range []atspi.Snapshot{
+		{},
+		{Role: "paragraph", ApplicationProcess: "soffice.bin"},
+		{Role: "table cell", ApplicationProcess: "chromium", LibreOffice: &atspi.LibreOfficeContext{InSpreadsheet: true, Cell: true, Formula: "wrong"}},
+		{Role: "table cell", Defunct: true, ApplicationProcess: "soffice.bin", LibreOffice: &atspi.LibreOfficeContext{InSpreadsheet: true, Cell: true, Formula: "wrong"}},
+	} {
+		if got := LibreOfficeFormulaText(snapshot); got != "Not in a table." {
+			t.Fatalf("unverified cell = %q", got)
+		}
+		if got := LibreOfficeCellFormula(snapshot); got != "" {
+			t.Fatalf("unverified formula = %q", got)
+		}
+	}
+}

internal/presentation/presentation.go

@@ -173,6 +173,9 @@ func FocusSpeechWithOptions(snapshot atspi.Snapshot, options Options) Speech {
 	if reading.SpeakMisspelledIndicator && snapshot.Misspelled {
 		fields = append(fields, "misspelled")
 	}
+	if LibreOfficeCellFormula(snapshot) != "" {
+		fields = append(fields, "has formula")
+	}
 	for _, part := range fields {
 		if part != "" && !contains(parts, part) {
 			parts = append(parts, part)