A src/FbTk/DefaultValue.hh

@@ -0,0 +1,82 @@
+// DefaultValue.hh
+// Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef FBTK_DEFAULTVALUE_HH
+#define FBTK_DEFAULTVALUE_HH
+
+namespace FbTk {
+
+// classes for overriding default values without having to listen for changes
+template <typename T>
+class DefaultValue {
+public:
+    DefaultValue(const T &def):
+        m_default(def), m_actual(def), m_use_default(true) { }
+
+    inline const T &get() const { return m_use_default ? m_default : m_actual; }
+    inline void set(const T &val) { m_use_default = false; m_actual = val; }
+    inline void restoreDefault() { m_use_default = true; }
+    inline void isDefault() const { return m_use_default; }
+
+    inline DefaultValue<T> &operator =(const T &val) {
+        set(val); return *this;
+    }
+
+    inline operator T() const { return get(); }
+
+private:
+    const T &m_default;
+    T m_actual;
+    bool m_use_default;
+};
+
+// designed for use with built-in types T, thus no need to return references
+template <typename T, typename Receiver>
+class DefaultAccessor {
+public:
+    typedef T (Receiver:: *Accessor)() const;
+    DefaultAccessor(const Receiver &r, Accessor a):
+        m_receiver(r), m_accessor(a), m_actual((r.*a)()),
+        m_use_default(true) { }
+
+    inline const T get() const {
+        return m_use_default ? (m_receiver.*m_accessor)() : m_actual;
+    }
+    inline void set(const T &val) { m_use_default = false; m_actual = val; }
+    inline void restoreDefault() { m_use_default = true; }
+    inline void isDefault() const { return m_use_default; }
+
+    inline DefaultAccessor<T, Receiver> &operator =(const T &val) {
+        set(val); return *this;
+    }
+
+    inline operator T() const { return get(); }
+
+private:
+    const Receiver &m_receiver;
+    Accessor m_accessor;
+    T m_actual;
+    bool m_use_default;
+};
+
+}; // end namespace FbTk
+
+#endif // FBTK_DEFAULTVALUE_HH

M src/FbTk/Makefile.am → src/FbTk/Makefile.am

@@ -16,7 +16,7 @@ imlib2_SOURCE= ImageImlib2.hh ImageImlib2.cc
 endif
 
 libFbTk_a_SOURCES = App.hh App.cc Color.cc Color.hh Command.hh \
-	ObjectRegistry.hh \
+	ObjectRegistry.hh DefaultValue.hh \
 	FileUtil.hh FileUtil.cc \
 	EventHandler.hh EventManager.hh EventManager.cc \
 	FbWindow.hh FbWindow.cc Font.cc Font.hh FontImp.hh \

M src/Window.cc → src/Window.cc

@@ -264,8 +264,8 @@ m_client(&client),
     m_toggled_decos(false),
     m_icon_hidden(false),
     m_focus_hidden(false),
-    m_focus_new(screen().focusControl().focusNew()),
-    m_mouse_focus(screen().focusControl().isMouseFocus()),
+    m_focus_new(screen().focusControl(), &FocusControl::focusNew),
+    m_mouse_focus(screen().focusControl(), &FocusControl::isMouseFocus),
     m_click_focus(true),
     m_old_pos_x(0), m_old_pos_y(0),
     m_old_width(1),  m_old_height(1),

M src/Window.hh → src/Window.hh

@@ -27,6 +27,7 @@
 #ifndef	 WINDOW_HH
 #define	 WINDOW_HH
 
+#include "FbTk/DefaultValue.hh"
 #include "FbTk/Timer.hh"
 #include "FbTk/Subject.hh"
 #include "FbTk/Observer.hh"
@@ -49,6 +50,7 @@ class WinClient;
 class FbWinFrameTheme;
 class BScreen;
 class FbWinFrame;
+class FocusControl;
 
 namespace FbTk {
 class TextButton;
@@ -609,8 +611,10 @@ } functions;
 
     bool m_icon_hidden;  ///< if the window is in the iconbar
     bool m_focus_hidden; ///< if the window is in the NextWindow list
-    bool m_focus_new;    ///< if the window is normally focused when mapped
-    bool m_mouse_focus;  ///< if the window is focused with EnterNotify
+    /// if the window is normally focused when mapped
+    FbTk::DefaultAccessor<bool, FocusControl> m_focus_new;
+    /// if the window is focused with EnterNotify
+    FbTk::DefaultAccessor<bool, FocusControl> m_mouse_focus;
     bool m_click_focus;  ///< if the window is focused by clicking
     int m_old_pos_x, m_old_pos_y; ///< old position so we can restore from maximized
     unsigned int m_old_width, m_old_height; ///< old size so we can restore from maximized state