allow to alter button labels via fluxbox-remote

Command is "RelabelButton button.foo $LABEL"

This is useful to eg. hint the amount of unread mails in a
button to start your MUA, reflect the $USER in a session menu button
etc.

src/Screen.cc

@@ -392,6 +392,7 @@ BScreen::~BScreen() {
         return;
 
     m_toolbar.reset(0);
+    m_toolButtonMap.reset(0);
 
     FbTk::EventManager *evm = FbTk::EventManager::instance();
     evm->remove(rootWindow());
@@ -454,6 +455,7 @@ void BScreen::initWindows() {
 
 #ifdef USE_TOOLBAR
     if (m_opts & Fluxbox::OPT_TOOLBAR) {
+        m_toolButtonMap.reset(new ToolButtonMap());
         Toolbar* tb = new Toolbar(*this, *layerManager().getLayer(::ResourceLayer::NORMAL));
         m_toolbar.reset(tb);
     }
@@ -1293,6 +1295,28 @@ void BScreen::reassociateWindow(FluxboxWindow *w, unsigned int wkspc_id,
     }
 }
 
+#if USE_TOOLBAR
+
+void BScreen::clearToolButtonMap() {
+    m_toolButtonMap->clear();
+}
+
+void BScreen::mapToolButton(std::string name, FbTk::TextButton *button) {
+    m_toolButtonMap->insert(std::pair<std::string, FbTk::TextButton*>(name, button));
+}
+
+bool BScreen::relabelToolButton(std::string button, std::string label) {
+    ToolButtonMap::const_iterator it = m_toolButtonMap->find(button);
+    if (it != m_toolButtonMap->end() && it->second) {
+        it->second->setText(label);
+        m_toolbar->relayout();
+        return true;
+    }
+    return false;
+}
+
+#endif
+
 void BScreen::initMenus() {
     m_workspacemenu.reset(MenuCreator::createMenuType("workspacemenu", screenNumber()));
     m_rootmenu->reloadHelper()->setMainFile(Fluxbox::instance()->getMenuFilename());

src/Screen.hh

@@ -69,8 +69,10 @@ class Menu;
 class ImageControl;
 class LayerItem;
 class FbWindow;
+class TextButton;
 }
 
+typedef std::map<std::string, FbTk::TextButton*> ToolButtonMap;
 
 /// Handles screen connection, screen clients and workspaces
 /**
@@ -343,6 +345,14 @@ public:
     void reassociateWindow(FluxboxWindow *window, unsigned int workspace_id,
                            bool ignore_sticky);
 
+#if USE_TOOLBAR
+    /**
+     * manage a map of named FbTk::TextButton's
+     */
+    void clearToolButtonMap();
+    void mapToolButton(std::string name, FbTk::TextButton *button);
+    bool relabelToolButton(std::string button, std::string label);
+#endif
 
     void reconfigure();
     void reconfigureTabs();
@@ -489,6 +499,7 @@ private:
 
     std::auto_ptr<Slit>     m_slit;
     std::auto_ptr<Toolbar>  m_toolbar;
+    std::auto_ptr<ToolButtonMap> m_toolButtonMap;
 
     Workspace *m_current_workspace;
 

src/ToolFactory.cc

@@ -119,6 +119,7 @@ ToolbarItem *ToolFactory::create(const std::string &name, const FbTk::FbWindow &
         if (label.empty())
             return 0;
         FbTk::TextButton *btn = new FbTk::TextButton(parent, m_button_theme->font(), label);
+        screen().mapToolButton(name, btn);
 
         std::string cmd_str = FbTk::Resource<std::string>
                               (m_screen.resourceManager(), "",

src/Toolbar.cc

@@ -364,6 +364,12 @@ void Toolbar::screenChanged(BScreen &screen) {
     reconfigure();
 }
 
+void Toolbar::relayout() {
+    forAll(m_item_list, std::mem_fun(&ToolbarItem::updateSizing));
+    rearrangeItems();
+    forAll(m_item_list, std::bind2nd(std::mem_fun(&ToolbarItem::renderTheme), alpha()));
+}
+
 void Toolbar::reconfigure() {
 
     updateVisibleState();
@@ -404,6 +410,7 @@ void Toolbar::reconfigure() {
 
         // destroy tools and rebuild them
         deleteItems();
+        screen().clearToolButtonMap();
         // they will be readded later
         menu().removeAll();
         setupMenus(true); // rebuild menu but skip rebuild of placement menu
@@ -489,11 +496,7 @@ void Toolbar::reconfigure() {
     if (theme()->shape() && m_shape.get())
         m_shape->update();
 
-    forAll(m_item_list, std::mem_fun(&ToolbarItem::updateSizing));
-
-    rearrangeItems();
-
-    forAll(m_item_list, std::bind2nd(std::mem_fun(&ToolbarItem::renderTheme), alpha()));
+    relayout();
 
     // we're done with all resizing and stuff now we can request a new
     // area to be reserved on screen

src/Toolbar.hh

@@ -53,6 +53,7 @@ class ToolbarItem;
 namespace FbTk {
 class ImageControl;
 class Shape;
+class TextButton;
 }
 
 /// The toolbar.
@@ -100,6 +101,7 @@ public:
     void handleEvent(XEvent &event);
     //@}
 
+    void relayout();
     void reconfigure();
     void setPlacement(Placement where);
 

src/WorkspaceCmd.cc

@@ -686,3 +686,28 @@ void CloseAllWindowsCmd::execute() {
             windows.end(), std::mem_fun(&FluxboxWindow::close));
 
 }
+
+void RelabelButtonCmd::execute() {
+#if USE_TOOLBAR
+    if (BScreen *screen = Fluxbox::instance()->mouseScreen())
+        screen->relabelToolButton(m_button, m_label);
+#endif
+}
+
+FbTk::Command<void> *RelabelButtonCmd::parse(const std::string &command,
+                                             const std::string &args, bool trusted) {
+    std::string button, label;
+    std::size_t ws = args.find_first_of(" \t\n");
+    if (ws != std::string::npos) {
+        button = args.substr(0, ws);
+        if (button.find("button.") == 0) {
+            label = args.substr(ws + 1, std::string::npos);
+        } else {
+            button.clear();
+        }
+    }
+    return new RelabelButtonCmd(button, label);
+}
+
+REGISTER_COMMAND_PARSER(relabelbutton, RelabelButtonCmd::parse, void);
+

src/WorkspaceCmd.hh

@@ -217,4 +217,15 @@ public:
     void execute();
 };
 
+class RelabelButtonCmd: public FbTk::Command<void> {
+public:
+    explicit RelabelButtonCmd(std::string button, std::string label):
+            m_button(button), m_label(label) {}
+    void execute();
+    static FbTk::Command<void> *parse(const std::string &command,
+                                const std::string &args, bool trusted);
+private:
+    std::string m_button, m_label;
+};
+
 #endif // WORKSPACECMD_HH