Automatically save init file when a resource is modified

previously, init was autosaved only when a resource was modified using the menu. I have also
included modifications through lua code.

To avoid wasting resources, the file is not saved immediately, but with a 5 second delay (to
enable saving a bunch of changes in one go)

5 files changed, 59 insertions, 35 deletions

diff --git a/src/FbTk/LResource.cc b/src/FbTk/LResource.cc
index 31362bd..de90b95 100644
--- a/src/FbTk/LResource.cc
+++ b/src/FbTk/LResource.cc
@@ -26,8 +26,11 @@
 
 #include "I18n.hh"
 #include "LuaUtil.hh"
+#include "MemFun.hh"
 #include "Resource.hh"
 
+// defined in LResourceHelper-lua.cc
+// contains the compiled code of LResourceHelper.lua
 extern const char LResourceHelper[];
 extern const unsigned int LResourceHelper_size;
 
@@ -101,8 +104,15 @@ void LResourceManager::convert(ResourceManager &old, const std::string &new_file
     new_rm.save(new_file.c_str(), NULL);
 }
 
-LResourceManager::LResourceManager(const std::string &root, Lua &l)
-        : ResourceManager_base(root), m_l(&l) {
+LResourceManager::LResourceManager(const std::string &root, Lua &l, unsigned int autosave)
+    : ResourceManager_base(root), m_l(&l) {
+
+    m_savetimer.setInterval(autosave);
+    m_savetimer.fireOnce(true);
+    m_savetimer.setFunctor( MemFunBind(*this, &LResourceManager::save,
+                static_cast<const char *>(NULL), static_cast<const char *>(NULL)
+            ) );
+
     setLua(l);
 }
 
@@ -143,6 +153,8 @@ bool LResourceManager::save(const char *filename, const char *) {
     if(filename == NULL)
         filename = m_filename.c_str();
 
+    std::cerr << "XXX SAVING " << filename << std::endl;
+
     m_l->getfield(lua::REGISTRYINDEX, dump_resources);
     m_l->getfield(lua::GLOBALSINDEX, m_root.c_str());
     m_l->pushstring(filename);
@@ -194,6 +206,11 @@ void LResourceManager::doRemoveResource(Resource_base &r) {
     m_l->pop();
 }
 
+void LResourceManager::resourceChanged(Resource_base &r) {
+    if(! m_savetimer.isTiming())
+        m_savetimer.start();
+}
+
 void LResourceManager::setLua(Lua &l) {
     l.checkstack(2);
     lua::stack_sentry s(l);
diff --git a/src/FbTk/LResource.hh b/src/FbTk/LResource.hh
index f0f8050..30f0e02 100644
--- a/src/FbTk/LResource.hh
+++ b/src/FbTk/LResource.hh
@@ -28,6 +28,7 @@
 #include <string>
 
 #include "Resource.hh"
+#include "Timer.hh"
 
 namespace FbTk {
 
@@ -37,11 +38,18 @@ class LResourceManager: public ResourceManager_base {
 public:
     static void convert(ResourceManager &old, const std::string &new_file);
 
-    LResourceManager(const std::string &root, Lua &l);
+    /**
+     * @param root the name of the table where settings will reside
+     * @param l lua context
+     * @param autosave delay (in seconds) for automatic saving of resources. Modifying a resource
+     * starts a timer. If another resource is modified, the timer is restarted. 0 = disabled
+     */
+    LResourceManager(const std::string &root, Lua &l, unsigned int autosave = 0);
     void load(const std::string &filename, const std::string &fallback);
     virtual bool save(const char *filename, const char *);
     virtual void addResource(Resource_base &r);
     virtual void removeResource(Resource_base &r);
+    virtual void resourceChanged(Resource_base &r);
     void setLua(Lua &l);
 
 private:
@@ -50,6 +58,7 @@ private:
 
     Lua *m_l;
     std::string m_filename;
+    Timer m_savetimer;
 };
 
 } // end namespace FbTk
diff --git a/src/FbTk/Resource.hh b/src/FbTk/Resource.hh
index 7a797a1..c4a7951 100644
--- a/src/FbTk/Resource.hh
+++ b/src/FbTk/Resource.hh
@@ -96,8 +96,6 @@ public:
     /// @return true on success
     virtual bool save(const char *filename, const char *mergefilename=0) = 0;
 
-
-
     /// Add resource to list, only used in Resource<T>
     virtual void addResource(Resource_base &r);
 
@@ -106,6 +104,9 @@ public:
         m_resourcelist.remove(&r);
     }
 
+    /// Called by Resources when their value changes
+    virtual void resourceChanged(Resource_base &r) = 0;
+
     /// searches for the resource with the resourcename
     /// @return pointer to resource base on success, else 0.
     Resource_base *findResource(const std::string &resourcename);
@@ -154,6 +155,8 @@ public:
     /// Add resource to list, only used in Resource<T>
     virtual void addResource(Resource_base &r);
 
+    virtual void resourceChanged(Resource_base &r) {};
+
     // this marks the database as "in use" and will avoid reloading
     // resources unless it is zero.
     // It returns this resource manager. Useful for passing to
@@ -211,12 +214,14 @@ public:
 
     void setDefaultValue() {
         m_value = m_defaultval;
+        m_rm.resourceChanged(*this);
         m_modified_sig.emit(m_value);
     }
     /// sets resource from string, specialized, must be implemented
     void setFromString(const char *strval) {
         try {
             m_value = Traits::fromString(strval);
+            m_rm.resourceChanged(*this);
             m_modified_sig.emit(m_value);
         }
         catch(ConversionError &e) {
@@ -226,6 +231,7 @@ public:
     }
     Accessor<T> &operator =(const T& newvalue) {
         m_value = newvalue;
+        m_rm.resourceChanged(*this);
         m_modified_sig.emit(m_value);
         return *this;
     }
@@ -236,6 +242,7 @@ public:
     virtual void setFromLua(lua::state &l) {
         try {
             m_value = Traits::fromLua(l);
+            m_rm.resourceChanged(*this);
             m_modified_sig.emit(m_value);
         }
         catch(ConversionError &e) {
diff --git a/src/Screen.cc b/src/Screen.cc
index e504a9b..250857b 100644
--- a/src/Screen.cc
+++ b/src/Screen.cc
@@ -184,9 +184,8 @@ int calcSquareDistance(int x1, int y1, int x2, int y2) {
 class TabPlacementMenuItem: public FbTk::RadioMenuItem {
 public:
     TabPlacementMenuItem(const FbTk::FbString & label, BScreen &screen,
-                         FbWinFrame::TabPlacement place,
-                         FbTk::RefCount<FbTk::Command<void> > &cmd):
-        FbTk::RadioMenuItem(label, cmd),
+                         FbWinFrame::TabPlacement place):
+        FbTk::RadioMenuItem(label),
         m_screen(screen),
         m_place(place) {
         setCloseOnClick(false);
@@ -1491,15 +1490,8 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
 
     menu.removeAll();
 
-    FbTk::MacroCommand *s_a_reconf_macro = new FbTk::MacroCommand();
-    FbTk::RefCount<FbTk::Command<void> > saverc_cmd(new FbTk::SimpleCommand<Fluxbox>(
-                                                 *Fluxbox::instance(),
-                                                 &Fluxbox::save_rc));
     FbTk::RefCount<FbTk::Command<void> > reconf_cmd(FbTk::CommandParser<void>::instance().parse("reconfigure"));
 
-    s_a_reconf_macro->add(saverc_cmd);
-    s_a_reconf_macro->add(reconf_cmd);
-    FbTk::RefCount<FbTk::Command<void> > save_and_reconfigure(s_a_reconf_macro);
     // create focus menu
     // we don't set this to internal menu so will
     // be deleted toghether with the parent
@@ -1508,12 +1500,12 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
                                           "Method used to give focus to windows");
     FbTk::RefCount<FbTk::Menu> focus_menu( createMenu(focusmenu_label) );
 
-#define _BOOLITEM(m,a, b, c, d, e, f) (m).insert(new FbTk::BoolMenuItem(_FB_XTEXT(a, b, c, d), e, f))
+#define _BOOLITEM(m,a, b, c, d, e) (m).insert(new FbTk::BoolMenuItem(_FB_XTEXT(a, b, c, d), e))
 
 
 #define _FOCUSITEM(a, b, c, d, e) \
     focus_menu->insert(new FocusModelMenuItem(_FB_XTEXT(a, b, c, d), focusControl(), \
-                                              e, save_and_reconfigure))
+                                              e, reconf_cmd))
 
     _FOCUSITEM(Configmenu, ClickFocus,
                "Click To Focus", "Click to focus",
@@ -1531,10 +1523,10 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
     focus_menu->insert(new FbTk::MenuSeparator());
     focus_menu->insert(new TabFocusModelMenuItem(_FB_XTEXT(Configmenu,
         ClickTabFocus, "ClickTabFocus", "Click tab to focus windows"),
-        focusControl(), FocusControl::CLICKTABFOCUS, save_and_reconfigure));
+        focusControl(), FocusControl::CLICKTABFOCUS, reconf_cmd));
     focus_menu->insert(new TabFocusModelMenuItem(_FB_XTEXT(Configmenu,
         MouseTabFocus, "MouseTabFocus", "Hover over tab to focus windows"),
-        focusControl(), FocusControl::MOUSETABFOCUS, save_and_reconfigure));
+        focusControl(), FocusControl::MOUSETABFOCUS, reconf_cmd));
     focus_menu->insert(new FbTk::MenuSeparator());
 
     try {
@@ -1548,10 +1540,10 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
 
     _BOOLITEM(*focus_menu, Configmenu, AutoRaise,
               "Auto Raise", "Auto Raise windows on sloppy",
-              resource.auto_raise, saverc_cmd);
+              resource.auto_raise);
     _BOOLITEM(*focus_menu, Configmenu, ClickRaises,
               "Click Raises", "Click Raises",
-              resource.click_raises, saverc_cmd);
+              resource.click_raises);
 
     focus_menu->updateMenu();
 
@@ -1567,17 +1559,17 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
 
     _BOOLITEM(*maxmenu, Configmenu, FullMax,
               "Full Maximization", "Maximise over slit, toolbar, etc",
-              resource.full_max, saverc_cmd);
+              resource.full_max);
     _BOOLITEM(*maxmenu, Configmenu, MaxIgnoreInc,
               "Ignore Resize Increment",
               "Maximizing Ignores Resize Increment (e.g. xterm)",
-              resource.max_ignore_inc, saverc_cmd);
+              resource.max_ignore_inc);
     _BOOLITEM(*maxmenu, Configmenu, MaxDisableMove,
               "Disable Moving", "Don't Allow Moving While Maximized",
-              resource.max_disable_move, saverc_cmd);
+              resource.max_disable_move);
     _BOOLITEM(*maxmenu, Configmenu, MaxDisableResize,
               "Disable Resizing", "Don't Allow Resizing While Maximized",
-              resource.max_disable_resize, saverc_cmd);
+              resource.max_disable_resize);
 
     maxmenu->updateMenu();
     menu.insert(maxmenu_label, maxmenu);
@@ -1597,13 +1589,13 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
 
     _BOOLITEM(*tab_menu,Configmenu, TabsInTitlebar,
               "Tabs in Titlebar", "Tabs in Titlebar",
-              resource.default_internal_tabs, saverc_cmd);
+              resource.default_internal_tabs);
     tab_menu->insert(new FbTk::BoolMenuItem(_FB_XTEXT(Common, MaximizeOver,
               "Maximize Over", "Maximize over this thing when maximizing"),
-              resource.max_over_tabs, save_and_reconfigure));
+              resource.max_over_tabs, reconf_cmd));
     tab_menu->insert(new FbTk::BoolMenuItem(_FB_XTEXT(Toolbar, ShowIcons,
               "Show Pictures", "chooses if little icons are shown next to title in the iconbar"),
-              resource.tabs_use_pixmap, save_and_reconfigure));
+              resource.tabs_use_pixmap, reconf_cmd));
 
     FbTk::MenuItem *tab_width_item =
         new FbTk::IntMenuItem(_FB_XTEXT(Configmenu, ExternalTabWidth,
@@ -1611,7 +1603,6 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
                                        "Width of external-style tabs"),
                                resource.tab_width, 10, 3000, /* silly number */
                                *tab_menu);
-    tab_width_item->setCommand(saverc_cmd);
     tab_menu->insert(tab_width_item);
 
     // menu is 3 wide, 5 down
@@ -1646,7 +1637,7 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
             tabplacement_menu->insert(p.label);
             tabplacement_menu->setItemEnabled(i, false);
         } else
-            tabplacement_menu->insert(new TabPlacementMenuItem(p.label, *this, p.placement, saverc_cmd));
+            tabplacement_menu->insert(new TabPlacementMenuItem(p.label, *this, p.placement));
     }
     tabplacement_menu->updateMenu();
 
@@ -1665,13 +1656,13 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
             alpha_menu->insert(new FbTk::BoolMenuItem(_FB_XTEXT(Configmenu, ForcePseudoTrans,
                                "Force Pseudo-Transparency",
                                "When composite is available, still use old pseudo-transparency"),
-                    Fluxbox::instance()->getPseudoTransResource(), save_and_reconfigure));
+                    Fluxbox::instance()->getPseudoTransResource(), reconf_cmd));
         }
 
         // in order to save system resources, don't save or reconfigure alpha
         // settings until after the user is done changing them
         FbTk::RefCount<FbTk::Command<void> > delayed_save_and_reconf(
-            new FbTk::DelayedCmd(save_and_reconfigure));
+            new FbTk::DelayedCmd(reconf_cmd));
 
         FbTk::MenuItem *focused_alpha_item =
             new FbTk::IntMenuItem(_FB_XTEXT(Configmenu, FocusedAlpha,
@@ -1711,11 +1702,11 @@ void BScreen::setupConfigmenu(FbTk::Menu &menu) {
     _BOOLITEM(menu, Configmenu, OpaqueMove,
               "Opaque Window Moving",
               "Window Moving with whole window visible (as opposed to outline moving)",
-              resource.opaque_move, saverc_cmd);
+              resource.opaque_move);
     _BOOLITEM(menu, Configmenu, WorkspaceWarping,
               "Workspace Warping",
               "Workspace Warping - dragging windows to the edge and onto the next workspace",
-              resource.workspace_warping, saverc_cmd);
+              resource.workspace_warping);
 
 #undef _BOOLITEM
 
diff --git a/src/fluxbox.cc b/src/fluxbox.cc
index a26fd66..75f38d7 100644
--- a/src/fluxbox.cc
+++ b/src/fluxbox.cc
@@ -230,7 +230,7 @@ Fluxbox::Fluxbox(int argc, char **argv,
     : FbTk::App(dpy_name.c_str()),
       m_l(new Lua),
       m_fbatoms(FbAtoms::instance()),
-      m_resourcemanager("session", *m_l),
+      m_resourcemanager("session", *m_l, 5),
 
       m_RC_PATH(rc_path),
       m_RC_INIT_FILE("init"),