CComponentsItem/CComponentsForm: add property focus

Specifies that some certain operations especially eg. exec events for
that item are possible.

src/gui/components/cc_base.h

@@ -241,6 +241,8 @@ class CComponentsItem : public CComponents
 		///property: page number, this defines current item page location, means: this item is embedded in a parent container on page number n, see also setPageNumber()
 		///default value is 0 for page one, any value > 0 causes handling for mutilple pages at parent container
 		uint8_t cc_page_number;
+		///specifies that some certain operations especially eg. exec events for that item are possible, see also setFocus(), hasFocus()
+		bool cc_has_focus;
 
 		///Pointer to the form object in which this item is embedded.
 		///Is typically the type CComponentsForm or derived classes, default intialized with NULL
@@ -269,6 +271,10 @@ class CComponentsItem : public CComponents
 		virtual CComponentsForm* getParent(){return cc_parent;};
 		///property: returns true if item is added to a form
 		virtual bool isAdded();
+		///indicates wether item has focus
+		virtual bool hasFocus(){return cc_has_focus;}
+		///set or unset focus of item, stand alone items without parent have always set focus to true, inside of a parent form object, always the last added item has focus
+		virtual void setFocus(bool focus);
 
 		///abstract: paint item, arg: do_save_bg see paintInit() above
 		virtual void paint(bool do_save_bg = CC_SAVE_SCREEN_YES) = 0;

src/gui/components/cc_frm.cpp

@@ -111,6 +111,7 @@ void CComponentsForm::addCCItem(CComponentsItem* cc_Item)
 		//assign item index
 		int new_index = genIndex();
 		cc_Item->setIndex(new_index);
+		cc_Item->setFocus(true);
 
 		dprintf(DEBUG_DEBUG, "\t%s-%d parent index = %d, assigned index ======> %d\n", __func__, __LINE__, cc_item_index, new_index);
 

src/gui/components/cc_item.cpp

@@ -50,6 +50,7 @@ CComponentsItem::CComponentsItem(CComponentsForm* parent)
 	cc_item_enabled 	= true;
 	cc_item_selected 	= false;
 	cc_page_number		= 0;
+	cc_has_focus		= true;
 	initParent(parent);
 }
 
@@ -214,3 +215,14 @@ void CComponentsItem::setWidthP(const uint8_t& w_percent)
 {
 	width = cc_parent ? w_percent*cc_parent->getWidth()/100 : w_percent*frameBuffer->getScreenWidth(true)/100;
 }
+
+void CComponentsItem::setFocus(bool focus)
+{
+	if(cc_parent){
+		for(size_t i=0; i<cc_parent->size(); i++){
+			if (focus)
+				cc_parent->getCCItem(i)->setFocus(false);
+		}
+	}
+	cc_has_focus = focus;
+}