From eb6509c6f3eddbd00ac59d89892209518ede53f5 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Sat, 17 Oct 2026 03:36:29 +0800
Subject: feat(tui): add document model and host message interfaces

---
 include/ricochet/tui/view.hh | 69 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 include/ricochet/tui/view.hh

(limited to 'include/ricochet/tui/view.hh')

diff --git a/include/ricochet/tui/view.hh b/include/ricochet/tui/view.hh
new file mode 100644
index 0000000..d259cf3
--- /dev/null
+++ b/include/ricochet/tui/view.hh
@@ -0,0 +1,69 @@
+/*
+ * Ricochet - A minimalist CLI web browser for fast, distraction-free navigation.
+ * Copyright (C) 2026  Richard Qin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "ricochet/tui/position.hh"
+
+#include <cstddef>
+#include <cstdint>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace ricochet::tui {
+
+enum class SelectionDirection : std::uint8_t
+{
+  Forward,
+  Backward
+};
+
+struct SelectionSnapshot
+{
+  // The normalized half-open range also covers any controls between its endpoints.
+  DocumentRange range {};
+  SelectionDirection direction { SelectionDirection::Forward };
+};
+
+struct HorizontalScroll
+{
+  BlockId block {};
+  std::size_t columns { 0 };
+};
+
+struct SearchSnapshot
+{
+  std::string query {};
+  std::optional<DocumentRange> current_match {};
+};
+
+// All positions and ranges belong to scope and draft_revision.
+// Editing sessions and control values (including passwords) are not exported here.
+struct ViewSnapshot
+{
+  DocumentScope scope {};
+  DraftRevision draft_revision {};
+  DisplayPosition cursor {};
+  DisplayPosition viewport_anchor {};
+  std::optional<SelectionSnapshot> selection {};
+  std::vector<HorizontalScroll> horizontal_scroll {};
+  SearchSnapshot search {};
+};
+
+} // namespace ricochet::tui
-- 
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