Added "on_check" XUI parameter for checkboxes

indra/llui/llcheckboxctrl.cpp

@@ -53,6 +53,9 @@ LLCheckBoxCtrl::Params::Params()
 :	initial_value("initial_value", false),
 	label_text("label_text"),
 	check_button("check_button"),
+	// <FS:Ansariel> on_check callback parameter
+	on_check("on_check"),
+	// </FS:Ansariel>
 	radio_style("radio_style")
 {}
 
@@ -116,6 +119,13 @@ LLCheckBoxCtrl::LLCheckBoxCtrl(const LLCheckBoxCtrl::Params& p)
 
 	mButton = LLUICtrlFactory::create<LLButton>(params);
 	addChild(mButton);
+
+	// <FS:Ansariel> on_check callback parameter
+	if (p.on_check.isProvided())
+	{
+		setCheckCallback(initEnableCallback(p.on_check));
+	}
+	// </FS:Ansariel>
 }
 
 LLCheckBoxCtrl::~LLCheckBoxCtrl()
@@ -250,3 +260,19 @@ void	LLCheckBoxCtrl::resetDirty()
 		mButton->resetDirty();
 	}
 }
+
+// <FS:Ansariel> on_check callback parameter
+// virtual
+void LLCheckBoxCtrl::draw()
+{
+	if (!mCheckSignal.empty())
+	{
+		bool checked = mCheckSignal(this, LLSD());
+		if (getValue().asBoolean() != checked)
+		{
+			setValue(checked);
+		}
+	}
+	LLUICtrl::draw();
+}
+// </FS:Ansariel>

indra/llui/llcheckboxctrl.h

@@ -57,6 +57,10 @@ public:
 		Optional<LLTextBox::Params> label_text;
 		Optional<LLButton::Params> check_button;
 
+		// <FS:Ansariel> on_check callback parameter
+		Optional<EnableCallbackParam> on_check;
+		// </FS:Ansariel>
+
 		Ignored					radio_style;
 
 		Params();
@@ -108,6 +112,18 @@ public:
 	virtual BOOL		isDirty()	const;		// Returns TRUE if the user has modified this control.
 	virtual void		resetDirty();			// Clear dirty state
 
+// <FS:Ansariel> on_check callback parameter
+	virtual void		draw();
+
+	boost::signals2::connection setCheckCallback( const enable_signal_t::slot_type& cb )
+	{
+		return mCheckSignal.connect(cb);
+	}
+	
+private:
+	enable_signal_t mCheckSignal;
+// </FS:Ansariel>
+
 protected:
 	// note: value is stored in toggle state of button
 	LLButton*		mButton;