Add a hidden option for the ping timeout before the dialog offering

killing the app appears (for #69211).

svn path=/trunk/kdebase/kwin/; revision=319659

client.cpp

@@ -973,11 +973,13 @@ void Client::pingWindow()
     {
     if( !Pping )
         return; // can't ping :(
+    if( options->killPingTimeout == 0 )
+        return; // turned off
     if( ping_timer != NULL )
         return; // pinging already
     ping_timer = new QTimer( this );
     connect( ping_timer, SIGNAL( timeout()), SLOT( pingTimeout()));
-    ping_timer->start( 5000, true ); // give it 5 seconds
+    ping_timer->start( options->killPingTimeout, true );
     ping_timestamp = qt_x_time;
     workspace()->sendPingToWindow( window(), ping_timestamp );
     }

kwin.kcfg

@@ -55,6 +55,7 @@
   <entry key="ElectricBorders" type="Int" />
   <entry key="ElectricBorderDelay" type="Int" />
   <entry key="IgnorePositionClasses" type="StringList" />
+  <entry key="KillPingTimeout" type="Int" />
  </group>
  <group name="WM" >
   <entry key="frame" type="Color" />

options.cpp

@@ -141,6 +141,8 @@ unsigned long Options::updateSettings()
          ++it )
         (*it) = (*it).lower();
 
+    killPingTimeout = config->readNumEntry( "KillPingTimeout", 5000 );
+
     // Mouse bindings
     config->setGroup( "MouseBindings");
     CmdActiveTitlebar1 = mouseCommand(config->readEntry("CommandActiveTitlebar1","Raise"), true );

options.h

@@ -252,6 +252,9 @@ class Options : public KDecorationOptions
         
         bool topMenuEnabled() const { return topmenus; }
         bool desktopTopMenu() const { return desktop_topmenu; }
+        
+        // timeout before non-responding application will be killed after attempt to close
+        int killPingTimeout;
 
     private:
         WindowOperation OpTitlebarDblClick;