link controls auto-add click handler

src/dialogxml/widgets/control.cpp

@@ -434,6 +434,16 @@ std::string cControl::parse(ticpp::Element& who, std::string fname) {
 	frame.height() = height > 0 ? height : bestSz.y;
 	setBounds(frame);
 	validatePostParse(who, fname, foundAttrs, foundNodes);
+
+	// Wire links to function:
+	// TODO links are identified only by having the color 'link', and can only link to their text value.
+	if(is_link){
+		attachClickHandler([](cDialog& self, std::string clicked, eKeyMod) {
+			launchURL(self[clicked].getText());
+			return false;
+		});
+	}
+
 	return id;
 }
 
@@ -540,6 +550,8 @@ bool cControl::parseAttribute(ticpp::Attribute& attr, std::string tagName, std::
 				setColour({0x7f, 0xd7, 0xFF});
 			if(parent->getBg() == cDialog::BG_LIGHT)
 				setColour({0x00, 0x00, 0xFF});
+
+			is_link = true;
 		} else try {
 			sf::Color clr = parseColor(val);
 			setColour(clr);

src/dialogxml/widgets/control.hpp

@@ -32,6 +32,9 @@ namespace ticpp {
 	class Node;
 }
 
+// Hyperlink forward declaration
+void launchURL(std::string url);
+
 /// Formatting properties
 enum eFormat {
 	TXT_FRAME,	///< The control's frame style. Should be an enum from @ref eFrameStyle.
@@ -462,6 +465,7 @@ private:
 	// Transient values only used during parsing
 	ePosition horz = POS_ABS, vert = POS_ABS;
 	std::string anchor;
+	bool is_link = false;
 };
 
 #endif