delay title updates

Notably shells will cause brief interim titles when calling
short-lived commands (try "ls"...)
This covers such by waiting 100ms after every title update before
reacting (the title will have returned in the mentioned cases, the UI
remains steady)

src/IconButton.cc

@@ -51,8 +51,12 @@ IconButton::IconButton(const FbTk::FbWindow &parent,
     m_theme(win, focused_theme, unfocused_theme),
     m_pm(win.screen().imageControl()) {
 
+    m_title_update_timer.setTimeout(100 * FbTk::FbTime::IN_MILLISECONDS);
+    m_title_update_timer.fireOnce(true);
+    FbTk::RefCount<FbTk::Command<void> > ets(new FbTk::SimpleCommand<IconButton>(*this, &IconButton::clientTitleChanged));
+    m_title_update_timer.setCommand(ets);
     m_signals.join(m_win.titleSig(),
-                   MemFunIgnoreArgs(*this, &IconButton::clientTitleChanged));
+                   MemFunIgnoreArgs(m_title_update_timer, &FbTk::Timer::start));
 
     m_signals.join(m_win.focusSig(),
                    MemFunIgnoreArgs(*this, &IconButton::reconfigAndClear));

src/IconButton.hh

@@ -28,6 +28,7 @@
 #include "FbTk/CachedPixmap.hh"
 #include "FbTk/FbPixmap.hh"
 #include "FbTk/TextButton.hh"
+#include "FbTk/Timer.hh"
 #include "FbTk/Signal.hh"
 
 class IconbarTheme;
@@ -92,6 +93,7 @@ private:
     FbTk::CachedPixmap m_pm;
     FbTk::SignalTracker m_signals;
     FbTk::Signal<> m_title_changed;
+    FbTk::Timer m_title_update_timer;
 };
 
 #endif // ICONBUTTON_HH

src/WinClient.cc

@@ -119,6 +119,11 @@ WinClient::WinClient(Window win, BScreen &screen, FluxboxWindow *fbwin):
         s_transient_wait.erase(win);
     }
 
+    m_title_update_timer.setTimeout(100 * FbTk::FbTime::IN_MILLISECONDS);
+    m_title_update_timer.fireOnce(true);
+    FbTk::RefCount<FbTk::Command<void> > ets(new FbTk::SimpleCommand<WinClient>(*this, &WinClient::emitTitleSig));
+    m_title_update_timer.setCommand(ets);
+
     // also check if this window is a transient
     // this needs to be done before creating an fbwindow, so this doesn't get
     // tabbed using the apps file
@@ -314,13 +319,17 @@ void WinClient::updateTitle() {
         return;
 
     m_title.setLogical(FbTk::FbString(Xutil::getWMName(window()), 0, 512));
+    m_title_update_timer.start();
+}
+
+void WinClient::emitTitleSig() {
     titleSig().emit(m_title.logical(), *this);
 }
 
 void WinClient::setTitle(const FbTk::FbString &title) {
     m_title.setLogical(title);
     m_title_override = true;
-    titleSig().emit(m_title.logical(), *this);
+    m_title_update_timer.start();
 }
 
 void WinClient::setIcon(const FbTk::PixmapWithMask& pm) {

src/WinClient.hh

@@ -149,6 +149,9 @@ private:
     // some transient (or us) is no longer modal
     void removeModal() { --m_modal_count; }
 
+    FbTk::Timer m_title_update_timer;
+    void emitTitleSig();
+
     // number of transients which we are modal for
     int m_modal_count;
     bool m_modal;