added isEmpty() methods to String and List class; fixed crasher that occured when saving/loading in NewGUI when nothing was selected

svn-id: r4655

2 files changed, 6 insertions, 2 deletions

diff --git a/gui/dialog.cpp b/gui/dialog.cpp
index 88c9cecc51..c4f53892c7 100644
--- a/gui/dialog.cpp
+++ b/gui/dialog.cpp
@@ -304,7 +304,7 @@ void SaveLoadDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 dat
 {
 	switch (cmd) {
 	case kSaveCmd:
-		if (_savegameList->getSelectedString()[0] != 0) {
+		if (_savegameList->getSelected() > 0 && !_savegameList->getSelectedString().isEmpty()) {
 			Scumm *s = _gui->getScumm();
 			s->_saveLoadSlot = _savegameList->getSelected();
 			s->_saveLoadCompatible = false;
@@ -314,7 +314,7 @@ void SaveLoadDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 dat
 		}
 		break;
 	case kLoadCmd:
-		if (_savegameList->getSelectedString()[0] != 0) {
+		if (_savegameList->getSelected() > 0 && !_savegameList->getSelectedString().isEmpty()) {
 			Scumm *s = _gui->getScumm();
 			s->_saveLoadSlot = _savegameList->getSelected();
 			s->_saveLoadCompatible = false;
diff --git a/util.h b/util.h
index 1873b0bb58..43410dcba5 100644
--- a/util.h
+++ b/util.h
@@ -103,6 +103,8 @@ public:
 		_size = 0;
 		_capacity = 0;
 	}
+	
+	bool isEmpty() const	{ return (_size == 0); }
 
 protected:
 	void ensureCapacity(int new_len)
@@ -150,6 +152,8 @@ public:
 	void deleteLastChar();
 	void clear();
 
+	bool isEmpty() const	{ return (_len == 0); }
+
 protected:
 	void ensureCapacity(int new_len, bool keep_old);
 	void decRefCount();