Add expand/collapse on additional clicks!

Action.c

@@ -530,6 +530,7 @@ void Action_setBindings(Htop_Action* keys) {
    keys['a'] = actionSetAffinity;
    keys[KEY_F(9)] = actionKill;
    keys['k'] = actionKill;
+   keys[KEY_RECLICK] = actionExpandOrCollapse;
    keys['+'] = actionExpandOrCollapse;
    keys['='] = actionExpandOrCollapse;
    keys['-'] = actionExpandOrCollapse;

CRT.c

@@ -31,6 +31,7 @@ in the source distribution for its full text.
 
 #define KEY_WHEELUP KEY_F(20)
 #define KEY_WHEELDOWN KEY_F(21)
+#define KEY_RECLICK KEY_F(22)
 
 //#link curses
 

CRT.h

@@ -22,6 +22,7 @@ in the source distribution for its full text.
 
 #define KEY_WHEELUP KEY_F(20)
 #define KEY_WHEELDOWN KEY_F(21)
+#define KEY_RECLICK KEY_F(22)
 
 //#link curses
 

ScreenManager.c

@@ -208,12 +208,16 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
                            ch = EVENT_HEADER_CLICK(mevent.x - panel->x);
                            break;
                         } else if (mevent.y > panel->y && mevent.y <= panel->y+panel->h) {
+                           ch = KEY_MOUSE;
                            if (panel == panelFocus || this->allowFocusChange) {
                               focus = i;
                               panelFocus = setCurrentPanel(panel);
+                              Object* oldSelection = Panel_getSelected(panel);
                               Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1);
+                              if (Panel_getSelected(panel) == oldSelection) {
+                                 ch = KEY_RECLICK;
+                              }
                            }
-                           ch = KEY_MOUSE;
                            break;
                         }
                      }