update clickable urls in terminal also when visible terminal has no focus * QTerminal.h: virtual slot for handling changes in the visibility of the terminal * QUnixTerminalImp.cpp (handle_visibility_changed): implementation of the virtual slot, calling function TerminalView::visibility_changed for doing required actions * QUnixTerminalImpl.h: new slothandle_visibility_changed * TerminalView.cpp (TerminalView): create timer for processing the filters; (blinkCursorEvent): do not update the filters here; (visibility_changed): function called from the visibility changed slot, en-/disabling cyclic timer for processing the filter chain * TerminalView.h: make processFilters a slot allowing to connect the new timer to it, new function visibility_changed, new class variable holding the time for processing the filter chain * terminal_dock_widget.cc (terminal_dock_widget): connect the signal for changed visibility to the new slot of the terminal

--- a/libgui/src/terminal-dock-widget.cc	Fri Jul 28 15:40:00 2017 -0700
+++ b/libgui/src/terminal-dock-widget.cc	Sat Jul 29 09:17:53 2017 +0200
@@ -42,6 +42,10 @@
 
   connect (terminal, SIGNAL (interrupt_signal (void)),
            this, SLOT (terminal_interrupt ()));
+
+  // Connect the visibility signal to the terminal for dis-/enabling timers
+  connect (this, SIGNAL (visibilityChanged (bool)),
+           terminal, SLOT (handle_visibility_changed (bool)));
 }
 
 bool