message boxes for errors

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@19 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/error.cpp

@@ -19,3 +19,31 @@ Error::~Error() {}
 String Error::what() const {
 	return message;
 }
+
+// ----------------------------------------------------------------------------- : Error handling
+
+// Errors for which a message box was already shown
+vector<String> previous_errors;
+String pending_error;
+DECLARE_TYPEOF_COLLECTION(String);
+
+void handle_error(const String& e, bool allow_duplicate = true, bool now = true) {
+	// Check duplicates
+	if (!allow_duplicate) {
+		FOR_EACH(pe, previous_errors) {
+			if (e == pe)  return;
+		}
+		previous_errors.push_back(e);
+	}
+	// Only show errors in the main thread
+	if (!now || !wxThread::IsMain()) {
+		pending_error = e;
+		return;
+	}
+	// show message
+	wxMessageBox(e, _("Error"), wxOK | wxICON_ERROR);
+}
+
+void handle_error(const Error& e, bool allow_duplicate, bool now) {
+	handle_error(e.what(), allow_duplicate, now);
+}

src/util/error.hpp

@@ -80,5 +80,17 @@ class ScriptError : public Error {
 	inline ScriptError(const String& str) : Error(str) {}
 };
 
+// ----------------------------------------------------------------------------- : Error handling
+
+/// Handle an error by showing a message box
+/** If !allow_duplicate and the error is the same as the previous error, does nothing.
+ *  If !now the error is handled by a later call to handle_pending_errors()
+ */
+void handle_error(const Error& e, bool allow_duplicate = true, bool now = true);
+
+/// Handle errors that were not handled immediatly in handleError
+/** Should be called repeatedly (e.g. in an onIdle event handler) */
+void handle_pending_errors();
+
 // ----------------------------------------------------------------------------- : EOF
 #endif

src/util/io/reader.cpp

@@ -91,7 +91,7 @@ template <> void Reader::handle(String& s) {
 		// read all lines that are indented enough
 		readLine();
 		while (indent >= expected_indent) {
-			if (!first) value += '\n';
+			if (!first) multi_line_str += _('\n');
 			first = false;
 			multi_line_str += line.substr(expected_indent); // strip expected indent
 			readLine();