Chat lobby:

- added new notifier to p3ChatService
GUI:
- list all public and private chat lobbies
- added subscribe/unsubscribe
- added new basic widget ChatTabWidget and use it in PopupChatWindow and ChatLobbyDialog
- added a tabbed dialog for every subscribed chat lobby

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4782 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/chat/ChatTabWidget.h

@@ -0,0 +1,38 @@
+#ifndef CHATTABWIDGET_H
+#define CHATTABWIDGET_H
+
+#include <QTabWidget>
+
+namespace Ui {
+class ChatTabWidget;
+}
+
+class PopupChatDialog;
+
+class ChatTabWidget : public QTabWidget
+{
+	Q_OBJECT
+
+public:
+	explicit ChatTabWidget(QWidget *parent = 0);
+	~ChatTabWidget();
+
+	void addDialog(PopupChatDialog *dialog);
+	void removeDialog(PopupChatDialog *dialog);
+
+	void getInfo(bool &isTyping, bool &hasNewMessage, QIcon *icon);
+
+signals:
+	void tabChanged(PopupChatDialog *dialog);
+	void infoChanged();
+
+private slots:
+    void tabClose(int tab);
+    void tabChanged(int tab);
+    void tabInfoChanged(PopupChatDialog *dialog);
+
+private:
+	Ui::ChatTabWidget *ui;
+};
+
+#endif // CHATTABWIDGET_H