Working MultipleChoiceValueEditor for checklist style

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@228 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/value/multiple_choice.cpp

@@ -7,6 +7,7 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <gui/value/multiple_choice.hpp>
+#include <data/action/value.hpp>
 
 // ----------------------------------------------------------------------------- : MultipleChoiceValueEditor
 
@@ -14,7 +15,45 @@ IMPLEMENT_VALUE_EDITOR(MultipleChoice) {}
 
 void MultipleChoiceValueEditor::determineSize(bool force_fit) {
 	if (!nativeLook()) return;
+	// item height
+	item_height = 16;
 	// height depends on number of items and item height
 	int item_count = field().choices->lastId();
-	style().height = item_count * 20;
+	style().height = item_count * item_height;
+}
+
+bool MultipleChoiceValueEditor::onLeftDown(const RealPoint& pos, wxMouseEvent& ev) {
+	// find item under cursor
+	if (style().render_style && RENDER_CHECKLIST) {
+		int id = (pos.y - style().top) / item_height;
+		int end = field().choices->lastId();
+		if (id >= 0 && id < end) {
+			toggle(id);
+			return true;
+		}
+	} else {
+		// TODO
+	}
+	return false;
+}
+
+void MultipleChoiceValueEditor::toggle(int id) {
+	String new_value;
+	// old selection
+	vector<String> selected;
+	value().get(selected);
+	vector<String>::iterator select_it = selected.begin();
+	// copy selected choices to new value
+	int end = field().choices->lastId();
+	for (int i = 0 ; i < end ; ++i) {
+		String choice = field().choices->choiceName(i);
+		bool active = select_it != selected.end() && *select_it == choice;
+		if (active) select_it++;
+		if (active != (i == id)) {
+			if (!new_value.empty()) new_value += _(", ");
+			new_value += choice;
+		}
+	}
+	// store value
+	getSet().actions.add(value_action(valueP(), new_value));
 }