Created a basic widget of the group tree with the filter out of the channels and used it in the forums tree too.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3937 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/common/GroupTreeWidget.h

@@ -0,0 +1,102 @@
+/****************************************************************
+ * This file is distributed under the following license:
+ *
+ * Copyright (c) 2010, RetroShare Team
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ ****************************************************************/
+
+#ifndef GROUPTREEWIDGET_H
+#define GROUPTREEWIDGET_H
+
+#include <QWidget>
+#include <QIcon>
+#include <QTreeWidgetItem>
+#include <QDateTime>
+
+namespace Ui {
+	class GroupTreeWidget;
+}
+
+class GroupItemInfo
+{
+public:
+	GroupItemInfo()
+	{
+		popularity = 0;
+		privatekey = false;
+	}
+
+public:
+	QString   id;
+	QString   name;
+	QString   description;
+	int       popularity;
+	QDateTime lastpost;
+	QIcon     icon;
+	bool      privatekey;
+};
+
+class GroupTreeWidget : public QWidget
+{
+	Q_OBJECT
+
+public:
+	GroupTreeWidget(QWidget *parent = 0);
+	~GroupTreeWidget();
+
+	// Add a new category item
+	QTreeWidgetItem *addCategoryItem(const QString &name, const QIcon &icon, bool expand);
+	// Get id of item
+	QString itemId(QTreeWidgetItem *item);
+	// Fill items of a group
+	void fillGroupItems(QTreeWidgetItem *categoryItem, const QList<GroupItemInfo> &itemList);
+	// Set the unread count of an item
+	void setUnreadCount(QTreeWidgetItem *item, int unreadCount);
+
+signals:
+    void treeCustomContextMenuRequested(const QPoint &pos);
+    void treeCurrentItemChanged(const QString &id);
+
+protected:
+	void changeEvent(QEvent *e);
+
+private slots:
+	void customContextMenuRequested(const QPoint &pos);
+    void currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
+	void filterChanged();
+	void clearFilter();
+
+private:
+	void calculateScore(QTreeWidgetItem *item);
+
+private:
+	Ui::GroupTreeWidget *ui;
+};
+
+class GroupTreeWidgetItem : public QTreeWidgetItem
+{
+public:
+	GroupTreeWidgetItem();
+
+	/**
+	 * reimplementing comparison operator so GroupTreeWidgetItem can be ordered in terms
+	 * of occurences of property filterText in its data columns
+	 */
+	bool operator<(const QTreeWidgetItem &other) const;
+};
+
+#endif // GROUPTREEWIDGET_H