Added tabs to gxsforums.

Moved the thread message part from GxsForumsDialog to GxsForumThreadWidget.
Added placeholder text to existing and new base classes to display for example "Loading".

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5905 b45a01b8-16f6-495d-af2f-9b41ad6348cc

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

@@ -68,6 +68,7 @@ GroupTreeWidget::GroupTreeWidget(QWidget *parent) :
 
 	connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(customContextMenuRequested(QPoint)));
 	connect(ui->treeWidget, SIGNAL(currentItemChanged(QTreeWidgetItem*, QTreeWidgetItem*)), this, SLOT(currentItemChanged(QTreeWidgetItem*, QTreeWidgetItem*)));
+	connect(ui->treeWidget, SIGNAL(itemClicked(QTreeWidgetItem*,int)), this, SLOT(itemClicked(QTreeWidgetItem*,int)));
 
 	/* Add own item delegate */
 	RSItemDelegate *itemDelegate = new RSItemDelegate(this);
@@ -201,6 +202,19 @@ void GroupTreeWidget::currentItemChanged(QTreeWidgetItem *current, QTreeWidgetIt
 	emit treeCurrentItemChanged(id);
 }
 
+void GroupTreeWidget::itemClicked(QTreeWidgetItem *item, int column)
+{
+	Q_UNUSED(column);
+
+	QString id;
+
+	if (item) {
+		id = item->data(COLUMN_DATA, ROLE_ID).toString();
+	}
+
+	emit treeItemClicked(id);
+}
+
 QTreeWidgetItem *GroupTreeWidget::addCategoryItem(const QString &name, const QIcon &icon, bool expand)
 {
 	QFont font = QFont("ARIAL", 10);

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

@@ -82,6 +82,7 @@ public:
 signals:
 	void treeCustomContextMenuRequested(const QPoint &pos);
 	void treeCurrentItemChanged(const QString &id);
+	void treeItemClicked(const QString &id);
 
 protected:
 	void changeEvent(QEvent *e);
@@ -89,6 +90,7 @@ protected:
 private slots:
 	void customContextMenuRequested(const QPoint &pos);
 	void currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
+	void itemClicked(QTreeWidgetItem *item, int column);
 	void filterChanged();
 
 	void sort();

retroshare-gui/src/gui/common/LinkTextBrowser.cpp

@@ -1,4 +1,5 @@
 #include <QDesktopServices>
+#include <QPainter>
 
 #include "LinkTextBrowser.h"
 
@@ -17,3 +18,27 @@ void LinkTextBrowser::linkClicked(const QUrl &url)
 	// so we handle links by our own
 	QDesktopServices::openUrl(url);
 }
+
+void LinkTextBrowser::setPlaceholderText(const QString &text)
+{
+	placeholderText = text;
+	viewport()->repaint();
+}
+
+void LinkTextBrowser::paintEvent(QPaintEvent *event)
+{
+	QTextBrowser::paintEvent(event);
+
+	if (placeholderText.isEmpty() == false && document()->isEmpty()) {
+		QWidget *vieportWidget = viewport();
+		QPainter painter(vieportWidget);
+
+		QPen pen = painter.pen();
+		QColor color = pen.color();
+		color.setAlpha(128);
+		pen.setColor(color);
+		painter.setPen(pen);
+
+		painter.drawText(QRect(QPoint(), vieportWidget->size()), Qt::AlignHCenter | Qt::AlignVCenter | Qt::TextWordWrap, placeholderText);
+	}
+}

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

@@ -10,8 +10,15 @@ class LinkTextBrowser : public QTextBrowser
 public:
 	explicit LinkTextBrowser(QWidget *parent = 0);
 
+	void setPlaceholderText(const QString &text);
+
 private slots:
 	void linkClicked(const QUrl &url);
+
+protected:
+	void paintEvent(QPaintEvent *event);
+
+	QString placeholderText;
 };
 
 #endif // LINKTEXTBROWSER_H

retroshare-gui/src/gui/common/RSTreeWidget.cpp

@@ -0,0 +1,52 @@
+/****************************************************************
+ * This file is distributed under the following license:
+ *
+ * Copyright (c) 2012, 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.
+ ****************************************************************/
+
+#include <QPainter>
+
+#include "RSTreeWidget.h"
+
+RSTreeWidget::RSTreeWidget(QWidget *parent) : QTreeWidget(parent)
+{
+}
+
+void RSTreeWidget::setPlaceholderText(const QString &text)
+{
+	placeholderText = text;
+	viewport()->repaint();
+}
+
+void RSTreeWidget::paintEvent(QPaintEvent *event)
+{
+	QTreeWidget::paintEvent(event);
+
+	if (placeholderText.isEmpty() == false && model() && model()->rowCount() == 0) {
+		QWidget *vieportWidget = viewport();
+		QPainter painter(vieportWidget);
+
+		QPen pen = painter.pen();
+		QColor color = pen.color();
+		color.setAlpha(128);
+		pen.setColor(color);
+		painter.setPen(pen);
+
+		painter.drawText(QRect(QPoint(), vieportWidget->size()), Qt::AlignHCenter | Qt::AlignVCenter | Qt::TextWordWrap, placeholderText);
+	}
+}

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

@@ -0,0 +1,43 @@
+/****************************************************************
+ * This file is distributed under the following license:
+ *
+ * Copyright (c) 2012, 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 _RSTREEWIDGET_H
+#define _RSTREEWIDGET_H
+
+#include <QTreeWidget>
+
+/* Subclassing QTreeWidget */
+class RSTreeWidget : public QTreeWidget
+{
+	Q_OBJECT
+
+public:
+	RSTreeWidget(QWidget *parent = 0);
+
+	void setPlaceholderText(const QString &text);
+
+protected:
+	void paintEvent(QPaintEvent *event);
+
+	QString placeholderText;
+};
+
+#endif