From d3aff03062a344f8ec0387d7c514747ee97fc69b Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Mon, 9 May 2016 13:48:48 +0100
Subject: [PATCH] Keep a pointer to current client in windows so that window
 hooks can access it

---
 src/client.cc | 5 +++++
 src/window.cc | 3 +++
 src/window.hh | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/src/client.cc b/src/client.cc
index 3dc3ea07..6d875c39 100644
--- a/src/client.cc
+++ b/src/client.cc
@@ -28,6 +28,8 @@ Client::Client(std::unique_ptr<UserInterface>&& ui,
                       std::move(name)},
       m_env_vars(env_vars)
 {
+    m_window->set_client(this);
+
     context().set_client(*this);
     context().set_window(*m_window);
 
@@ -42,6 +44,7 @@ Client::Client(std::unique_ptr<UserInterface>&& ui,
 Client::~Client()
 {
     m_window->options().unregister_watcher(*this);
+    m_window->set_client(nullptr);
 }
 
 Optional<Key> Client::get_next_key(EventMode mode)
@@ -149,11 +152,13 @@ void Client::change_buffer(Buffer& buffer)
 
     auto& client_manager = ClientManager::instance();
     m_window->options().unregister_watcher(*this);
+    m_window->set_client(nullptr);
     client_manager.add_free_window(std::move(m_window),
                                    std::move(context().selections()));
     WindowAndSelections ws = client_manager.get_free_window(buffer);
 
     m_window = std::move(ws.window);
+    m_window->set_client(this);
     m_window->options().register_watcher(*this);
     m_ui->set_ui_options(m_window->options()["ui_options"].get<UserInterface::Options>());
 
diff --git a/src/window.cc b/src/window.cc
index 6dea389c..0e7c3b96 100644
--- a/src/window.cc
+++ b/src/window.cc
@@ -377,6 +377,9 @@ void Window::run_hook_in_own_context(StringView hook_name, StringView param)
 {
     InputHandler hook_handler({ *m_buffer, Selection{} }, Context::Flags::Transient);
     hook_handler.context().set_window(*this);
+    if (m_client)
+        hook_handler.context().set_client(*m_client);
+
     hooks().run_hook(hook_name, param, hook_handler.context());
 }
 }
diff --git a/src/window.hh b/src/window.hh
index 40e0fef8..ef9af667 100644
--- a/src/window.hh
+++ b/src/window.hh
@@ -1,6 +1,7 @@
 #ifndef window_hh_INCLUDED
 #define window_hh_INCLUDED
 
+#include "client.hh"
 #include "display_buffer.hh"
 #include "highlighter_group.hh"
 #include "option_manager.hh"
@@ -46,6 +47,8 @@ public:
     ByteCoord offset_coord(ByteCoord coord, CharCount offset);
     ByteCoordAndTarget offset_coord(ByteCoordAndTarget coord, LineCount offset);
 
+    void set_client(Client* client) { m_client = client; }
+
     void clear_display_buffer();
 private:
     Window(const Window&) = delete;
@@ -56,6 +59,7 @@ private:
     void run_hook_in_own_context(StringView hook_name, StringView param);
 
     SafePtr<Buffer> m_buffer;
+    SafePtr<Client> m_client;
 
     CharCoord m_position;
     CharCoord m_dimensions;