WindowServer+LibGUI: Add per-window progress

Each window now has an associated progress integer that can be updated
via the SetWindowProgress IPC call.

This can be used by clients to indicate the progress of ongoing tasks.
Any number in the range 0 through 100 indicate a progress percentage.
Any other number means "no progress"

12 files changed, 47 insertions, 4 deletions

diff --git a/Libraries/LibGUI/Event.h b/Libraries/LibGUI/Event.h
index 1dd6dec569..b8dbe6d73e 100644
--- a/Libraries/LibGUI/Event.h
+++ b/Libraries/LibGUI/Event.h
@@ -111,7 +111,7 @@ public:
 
 class WMWindowStateChangedEvent : public WMEvent {
 public:
-    WMWindowStateChangedEvent(int client_id, int window_id, const StringView& title, const Gfx::Rect& rect, bool is_active, WindowType window_type, bool is_minimized, bool is_frameless)
+    WMWindowStateChangedEvent(int client_id, int window_id, const StringView& title, const Gfx::Rect& rect, bool is_active, WindowType window_type, bool is_minimized, bool is_frameless, int progress)
         : WMEvent(Event::Type::WM_WindowStateChanged, client_id, window_id)
         , m_title(title)
         , m_rect(rect)
@@ -119,6 +119,7 @@ public:
         , m_active(is_active)
         , m_minimized(is_minimized)
         , m_frameless(is_frameless)
+        , m_progress(progress)
     {
     }
 
@@ -128,6 +129,7 @@ public:
     WindowType window_type() const { return m_window_type; }
     bool is_minimized() const { return m_minimized; }
     bool is_frameless() const { return m_frameless; }
+    int progress() const { return m_progress; }
 
 private:
     String m_title;
@@ -136,6 +138,7 @@ private:
     bool m_active;
     bool m_minimized;
     bool m_frameless;
+    int m_progress;
 };
 
 class WMWindowRectChangedEvent : public WMEvent {
diff --git a/Libraries/LibGUI/Window.cpp b/Libraries/LibGUI/Window.cpp
index 805c8353f0..91d435c68b 100644
--- a/Libraries/LibGUI/Window.cpp
+++ b/Libraries/LibGUI/Window.cpp
@@ -779,4 +779,10 @@ void Window::did_remove_widget(Badge<Widget>, Widget& widget)
         m_automatic_cursor_tracking_widget = nullptr;
 }
 
+void Window::set_progress(int progress)
+{
+    ASSERT(m_window_id);
+    WindowServerConnection::the().post_message(Messages::WindowServer::SetWindowProgress(m_window_id, progress));
+}
+
 }
diff --git a/Libraries/LibGUI/Window.h b/Libraries/LibGUI/Window.h
index c2ca561f60..f8d8428a64 100644
--- a/Libraries/LibGUI/Window.h
+++ b/Libraries/LibGUI/Window.h
@@ -188,6 +188,8 @@ public:
 
     Window* find_parent_window();
 
+    void set_progress(int);
+
 protected:
     Window(Core::Object* parent = nullptr);
     virtual void wm_event(WMEvent&);
diff --git a/Libraries/LibGUI/WindowServerConnection.cpp b/Libraries/LibGUI/WindowServerConnection.cpp
index 38ef7f0f8b..afa94e5768 100644
--- a/Libraries/LibGUI/WindowServerConnection.cpp
+++ b/Libraries/LibGUI/WindowServerConnection.cpp
@@ -266,7 +266,7 @@ void WindowServerConnection::handle(const Messages::WindowClient::MenuItemActiva
 void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowStateChanged& message)
 {
     if (auto* window = Window::from_window_id(message.wm_id()))
-        Core::EventLoop::current().post_event(*window, make<WMWindowStateChangedEvent>(message.client_id(), message.window_id(), message.title(), message.rect(), message.is_active(), static_cast<WindowType>(message.window_type()), message.is_minimized(), message.is_frameless()));
+        Core::EventLoop::current().post_event(*window, make<WMWindowStateChangedEvent>(message.client_id(), message.window_id(), message.title(), message.rect(), message.is_active(), static_cast<WindowType>(message.window_type()), message.is_minimized(), message.is_frameless(), message.progress()));
 }
 
 void WindowServerConnection::handle(const Messages::WindowClient::WM_WindowRectChanged& message)
diff --git a/Services/WindowServer/ClientConnection.cpp b/Services/WindowServer/ClientConnection.cpp
index e476124b9d..51d645d578 100644
--- a/Services/WindowServer/ClientConnection.cpp
+++ b/Services/WindowServer/ClientConnection.cpp
@@ -810,4 +810,14 @@ void ClientConnection::notify_display_link(Badge<Compositor>)
     post_message(Messages::WindowClient::DisplayLinkNotification());
 }
 
+void ClientConnection::handle(const Messages::WindowServer::SetWindowProgress& message)
+{
+    auto it = m_windows.find(message.window_id());
+    if (it == m_windows.end()) {
+        did_misbehave("SetWindowProgress with bad window ID");
+        return;
+    }
+    it->value->set_progress(message.progress());
+}
+
 }
diff --git a/Services/WindowServer/ClientConnection.h b/Services/WindowServer/ClientConnection.h
index 3ae22199b2..a871b636e8 100644
--- a/Services/WindowServer/ClientConnection.h
+++ b/Services/WindowServer/ClientConnection.h
@@ -133,6 +133,7 @@ private:
     virtual OwnPtr<Messages::WindowServer::SetWindowBaseSizeAndSizeIncrementResponse> handle(const Messages::WindowServer::SetWindowBaseSizeAndSizeIncrement&) override;
     virtual void handle(const Messages::WindowServer::EnableDisplayLink&) override;
     virtual void handle(const Messages::WindowServer::DisableDisplayLink&) override;
+    virtual void handle(const Messages::WindowServer::SetWindowProgress&) override;
 
     Window* window_from_id(i32 window_id);
 
diff --git a/Services/WindowServer/Window.cpp b/Services/WindowServer/Window.cpp
index 874f518ef5..e816935da8 100644
--- a/Services/WindowServer/Window.cpp
+++ b/Services/WindowServer/Window.cpp
@@ -537,4 +537,13 @@ void Window::set_parent_window(Window& parent_window)
     parent_window.add_child_window(*this);
 }
 
+void Window::set_progress(int progress)
+{
+    if (m_progress == progress)
+        return;
+
+    m_progress = progress;
+    WindowManager::the().notify_progress_changed(*this);
+}
+
 }
diff --git a/Services/WindowServer/Window.h b/Services/WindowServer/Window.h
index 09856c96dd..b931b93955 100644
--- a/Services/WindowServer/Window.h
+++ b/Services/WindowServer/Window.h
@@ -232,6 +232,9 @@ public:
     void set_frameless(bool frameless) { m_frameless = frameless; }
     bool is_frameless() const { return m_frameless; }
 
+    int progress() const { return m_progress; }
+    void set_progress(int);
+
 private:
     void handle_mouse_event(const MouseEvent&);
     void update_menu_item_text(PopupMenuItem item);
@@ -281,6 +284,7 @@ private:
     MenuItem* m_window_menu_minimize_item { nullptr };
     MenuItem* m_window_menu_maximize_item { nullptr };
     int m_minimize_animation_step { -1 };
+    int m_progress { -1 };
 };
 
 }
diff --git a/Services/WindowServer/WindowClient.ipc b/Services/WindowServer/WindowClient.ipc
index 37e369de7e..ddcdcb6cf7 100644
--- a/Services/WindowServer/WindowClient.ipc
+++ b/Services/WindowServer/WindowClient.ipc
@@ -21,7 +21,7 @@ endpoint WindowClient = 4
     ScreenRectChanged(Gfx::Rect rect) =|
 
     WM_WindowRemoved(i32 wm_id, i32 client_id, i32 window_id) =|
-    WM_WindowStateChanged(i32 wm_id, i32 client_id, i32 window_id, bool is_active, bool is_minimized, bool is_frameless, i32 window_type, [UTF8] String title, Gfx::Rect rect) =|
+    WM_WindowStateChanged(i32 wm_id, i32 client_id, i32 window_id, bool is_active, bool is_minimized, bool is_frameless, i32 window_type, [UTF8] String title, Gfx::Rect rect, i32 progress) =|
     WM_WindowIconBitmapChanged(i32 wm_id, i32 client_id, i32 window_id, i32 icon_buffer_id, Gfx::Size icon_size) =|
     WM_WindowRectChanged(i32 wm_id, i32 client_id, i32 window_id, Gfx::Rect rect) =|
 
diff --git a/Services/WindowServer/WindowManager.cpp b/Services/WindowServer/WindowManager.cpp
index 977f892d7d..5d900fd930 100644
--- a/Services/WindowServer/WindowManager.cpp
+++ b/Services/WindowServer/WindowManager.cpp
@@ -253,7 +253,7 @@ void WindowManager::tell_wm_listener_about_window(Window& listener, Window& wind
         return;
     if (window.is_internal())
         return;
-    listener.client()->post_message(Messages::WindowClient::WM_WindowStateChanged(listener.window_id(), window.client_id(), window.window_id(), window.is_active(), window.is_minimized(), window.is_frameless(), (i32)window.type(), window.title(), window.rect()));
+    listener.client()->post_message(Messages::WindowClient::WM_WindowStateChanged(listener.window_id(), window.client_id(), window.window_id(), window.is_active(), window.is_minimized(), window.is_frameless(), (i32)window.type(), window.title(), window.rect(), window.progress()));
 }
 
 void WindowManager::tell_wm_listener_about_window_rect(Window& listener, Window& window)
@@ -359,6 +359,11 @@ void WindowManager::notify_occlusion_state_changed(Window& window)
         window.client()->post_message(Messages::WindowClient::WindowStateChanged(window.window_id(), window.is_minimized(), window.is_occluded()));
 }
 
+void WindowManager::notify_progress_changed(Window& window)
+{
+    tell_wm_listeners_window_state_changed(window);
+}
+
 void WindowManager::pick_new_active_window()
 {
     bool new_window_picked = false;
diff --git a/Services/WindowServer/WindowManager.h b/Services/WindowServer/WindowManager.h
index a3bb68d084..14688e0a26 100644
--- a/Services/WindowServer/WindowManager.h
+++ b/Services/WindowServer/WindowManager.h
@@ -92,6 +92,7 @@ public:
     void notify_minimization_state_changed(Window&);
     void notify_opacity_changed(Window&);
     void notify_occlusion_state_changed(Window&);
+    void notify_progress_changed(Window&);
     void notify_client_changed_app_menubar(ClientConnection&);
 
     Gfx::Rect maximized_window_rect(const Window&) const;
diff --git a/Services/WindowServer/WindowServer.ipc b/Services/WindowServer/WindowServer.ipc
index dbd3c06957..3b08a7dd83 100644
--- a/Services/WindowServer/WindowServer.ipc
+++ b/Services/WindowServer/WindowServer.ipc
@@ -49,6 +49,8 @@ endpoint WindowServer = 2
     SetWindowTitle(i32 window_id, [UTF8] String title) => ()
     GetWindowTitle(i32 window_id) => ([UTF8] String title)
 
+    SetWindowProgress(i32 window_id, i32 progress) =|
+
     SetWindowRect(i32 window_id, Gfx::Rect rect) => (Gfx::Rect rect)
     GetWindowRect(i32 window_id) => (Gfx::Rect rect)