Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt	(revision 1105231)
+++ CMakeLists.txt	(working copy)
@@ -34,6 +34,8 @@
 
 add_subdirectory( snippets_tng )
 
+add_subdirectory( tabify )
+
 MESSAGE( STATUS "remember to find maintainers for these plugins and port them to the kate 3.0 interfaces...")
 
 # Example plugin, not meant to be built for production use.
Index: tabify/tabify.cpp
===================================================================
--- tabify/tabify.cpp	(revision 0)
+++ tabify/tabify.cpp	(revision 0)
@@ -0,0 +1,208 @@
+/***************************************************************************
+*   Copyright (C) 2010 by Abhishek Patil <abhishekworld@gmail.com>        *
+*                                                                         *
+*   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 "tabify.h"
+#include <kate/documentmanager.h>
+#include <kate/application.h>
+
+#include <kaction.h>
+#include <klocale.h>
+#include <kstandarddirs.h>
+#include <kglobalsettings.h>
+#include <kglobal.h>
+#include <kpluginfactory.h>
+#include <kpluginloader.h>
+#include <kaboutdata.h>
+
+#include <kiconloader.h>
+#include <ktabbar.h>
+#include <kdebug.h>
+#include <QtGui/QBoxLayout>
+#include <QtCore/QMutex>
+
+K_PLUGIN_FACTORY(TabBarFactory, registerPlugin<TabBarPlugin>();)
+K_EXPORT_PLUGIN(TabBarFactory(KAboutData("tabifyplugin", "katetabifyplugin",
+                              ki18n("TabifyPlguin"), "0.1", ki18n("Tabify Plugin"), KAboutData::License_LGPL_V2)))
+
+///////////////////////////////////////////////////////////////////////////////
+// TabBarPluginView
+///////////////////////////////////////////////////////////////////////////////
+TabBarPluginView::TabBarPluginView(Kate::MainWindow* mainwindow)
+    : Kate::PluginView(mainwindow)
+{
+  m_tabBar = new KTabBar(mainWindow()->centralWidget());
+  m_tabIsDeleting = false;
+
+  m_tabBar->setTabsClosable(true);
+  m_tabBar->setDocumentMode(true);
+
+  QBoxLayout* layout = qobject_cast<QBoxLayout*>(mainWindow()->centralWidget()->layout());
+  layout->insertWidget(0, m_tabBar);
+
+  connect(Kate::application()->documentManager(), SIGNAL(documentCreated(KTextEditor::Document*)),
+          this, SLOT(slotDocumentCreated(KTextEditor::Document*)));
+  connect(Kate::application()->documentManager(), SIGNAL(documentDeleted(KTextEditor::Document*)),
+          this, SLOT(slotDocumentDeleted(KTextEditor::Document*)));
+  connect(mainWindow(), SIGNAL(viewChanged()),
+          this, SLOT(slotViewChanged()));
+
+  connect(m_tabBar, SIGNAL(currentChanged(int)), this, SLOT(slotTabChanged(int)));
+  connect(m_tabBar, SIGNAL(closeRequest(int)), this, SLOT(slotTabCloseRequest(int)));
+
+  foreach(KTextEditor::Document* document, Kate::application()->documentManager()->documents()) {
+    slotDocumentCreated(document);
+  }
+}
+
+TabBarPluginView::~TabBarPluginView()
+{
+  delete m_tabBar;
+}
+
+void TabBarPluginView::slotDocumentCreated(KTextEditor::Document* document)
+{
+  if (!document)
+    return;
+  connect(document, SIGNAL(modifiedChanged(KTextEditor::Document*)),
+          this, SLOT(slotDocumentChanged(KTextEditor::Document*)));
+  connect(document, SIGNAL(modifiedOnDisk(KTextEditor::Document*, bool,
+                                          KTextEditor::ModificationInterface::ModifiedOnDiskReason)),
+          this, SLOT(slotModifiedOnDisc(KTextEditor::Document*, bool,
+                                        KTextEditor::ModificationInterface::ModifiedOnDiskReason)));
+  connect(document, SIGNAL(documentNameChanged(KTextEditor::Document*)),
+          this, SLOT(slotNameChanged(KTextEditor::Document*)));
+
+  int index = m_tabBar->addTab(document->documentName());
+  m_tabDocMap[index] = document;
+  m_docTabMap[document] = index;
+}
+
+void TabBarPluginView::slotTabChanged(int index)
+{
+  if (m_tabIsDeleting) {
+    return;
+  }
+
+  mainWindow()->activateView(m_tabDocMap[index]);
+}
+
+void TabBarPluginView::slotDocumentDeleted(KTextEditor::Document* document)
+{
+  m_tabIsDeleting = true;
+  int index = m_docTabMap[document];
+  m_tabBar->removeTab(index);
+  m_tabDocMap.clear();
+  m_docTabMap.clear();
+  m_tabIsDeleting = false;
+
+  //Rebuild the Map with current tab index...
+  QList<KTextEditor::Document*>documentList =  Kate::application()->documentManager()->documents();
+  for (int i = 0; i <  documentList.count(); i++) {
+    m_tabDocMap[i] = documentList.at(i);
+    m_docTabMap[documentList.at(i)] = i;
+  }
+}
+
+void TabBarPluginView::slotViewChanged()
+{
+  if (m_tabIsDeleting) {
+    return;
+  }
+
+  KTextEditor::View* view = mainWindow()->activeView();
+  if (!view) {
+    return;
+  }
+
+  int tabID = m_docTabMap[view->document()];
+  m_tabBar->setCurrentIndex(tabID);
+}
+
+void TabBarPluginView::slotTabCloseRequest(int tabId)
+{
+  Kate::application()->documentManager()->closeDocument(m_tabDocMap[tabId]);
+}
+
+void TabBarPluginView::slotDocumentChanged(KTextEditor::Document* document)
+{
+
+  int tabID = m_docTabMap[document];
+  if (document->isModified()) {
+    m_tabBar->setTabIcon(tabID, KIconLoader::global()
+                         ->loadIcon("modified", KIconLoader::Small, 16));
+  } else {
+    m_tabBar->setTabIcon(tabID, QIcon());
+  }
+}
+
+void TabBarPluginView::slotModifiedOnDisc(KTextEditor::Document* document, bool modified,
+    KTextEditor::ModificationInterface::ModifiedOnDiskReason reason)
+{
+  int tabID = m_docTabMap[document];
+
+  if (!modified) {
+    m_tabBar->setTabIcon(tabID, QIcon());
+  } else {
+    switch (reason) {
+    case KTextEditor::ModificationInterface::OnDiskModified:
+      m_tabBar->setTabIcon(tabID, KIconLoader::global()
+                           ->loadIcon("cancel", KIconLoader::Small));
+      break;
+    case KTextEditor::ModificationInterface::OnDiskCreated:
+      m_tabBar->setTabIcon(tabID, KIconLoader::global()
+                           ->loadIcon("modified", KIconLoader::Small));
+      break;
+    case KTextEditor::ModificationInterface::OnDiskDeleted:
+      m_tabBar->setTabIcon(tabID, KIconLoader::global()
+                           ->loadIcon("cancel", KIconLoader::Small));
+    default:
+      m_tabBar->setTabIcon(tabID, KIconLoader::global()
+                           ->loadIcon("cancel", KIconLoader::Small));
+    }
+  }
+}
+
+void TabBarPluginView::slotNameChanged(KTextEditor::Document* document)
+{
+
+  if (!document) {
+    return;
+  }
+
+  int tabID = m_docTabMap[document];
+  m_tabBar->setTabText(tabID, document->documentName());
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// TabBarPlugin
+///////////////////////////////////////////////////////////////////////////////
+TabBarPlugin::TabBarPlugin(QObject* parent , const QList<QVariant>&)
+    : Kate::Plugin((Kate::Application*)parent)
+{
+}
+
+TabBarPlugin::~TabBarPlugin()
+{
+}
+
+Kate::PluginView *TabBarPlugin::createView(Kate::MainWindow *mainWindow)
+{
+  TabBarPluginView *view = new TabBarPluginView(mainWindow);
+  return view;
+}
+
Index: tabify/ui.rc
===================================================================
--- tabify/ui.rc	(revision 0)
+++ tabify/ui.rc	(revision 0)
@@ -0,0 +1,7 @@
+<!DOCTYPE kpartgui>
+<gui name="tabifyplugin" library="katetabifyplugin" version="1">
+<ToolBar>
+  <text>Tabify Plugin</text>
+  <Action name="tabbar_widget"/>
+</ToolBar>
+</gui>
Index: tabify/tabify.h
===================================================================
--- tabify/tabify.h	(revision 0)
+++ tabify/tabify.h	(revision 0)
@@ -0,0 +1,82 @@
+/***************************************************************************
+ *   Copyright (C) 2010 by Abhishek Patil <abhishekworld@gmail.com>        *
+ *                                                                         *
+ *   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 TABIFY_H
+#define TABIFY_H
+
+#include <kate/application.h>
+#include <kate/documentmanager.h>
+#include <kate/mainwindow.h>
+#include <kate/plugin.h>
+#include <ktexteditor/document.h>
+#include <ktexteditor/modificationinterface.h>
+#include <ktexteditor/plugin.h>
+#include <ktexteditor/view.h>
+#include <klocalizedstring.h>
+#include <ktabbar.h>
+
+#include <QtCore/QEvent>
+#include <QtCore/QMutex>
+#include <QtCore/QObject>
+#include <QtCore/QList>
+#include <QtGui/QTabBar>
+
+class TabBarPluginView
+      : public Kate::PluginView
+{
+  Q_OBJECT
+
+public:
+  explicit TabBarPluginView(Kate::MainWindow* mainwindow);
+  virtual ~TabBarPluginView();
+
+public slots:
+  void slotDocumentCreated(KTextEditor::Document* doc);
+  void slotTabChanged(int);
+  void slotDocumentDeleted(KTextEditor::Document*);
+  void slotViewChanged();
+  void slotTabCloseRequest(int);
+  void slotDocumentChanged(KTextEditor::Document*);
+  void slotModifiedOnDisc(KTextEditor::Document*, bool,
+                          KTextEditor::ModificationInterface::ModifiedOnDiskReason);
+  void slotNameChanged(KTextEditor::Document*);
+
+private:
+  KTabBar* m_tabBar;
+  QMap<int, KTextEditor::Document*> m_tabDocMap;
+  QMap<KTextEditor::Document*, int> m_docTabMap;
+  bool m_tabIsDeleting;
+};
+
+class TabBarPlugin
+      : public Kate::Plugin
+{
+  Q_OBJECT
+
+
+public:
+  explicit TabBarPlugin(QObject* parent = 0, const QList<QVariant>& = QList<QVariant>());
+  virtual ~TabBarPlugin();
+
+  Kate::PluginView *createView(Kate::MainWindow *mainWindow);
+
+private:
+  QList<TabBarPluginView*> m_views;
+};
+
+#endif // TABIFY_H
Index: tabify/katetabifyplugin.desktop
===================================================================
--- tabify/katetabifyplugin.desktop	(revision 0)
+++ tabify/katetabifyplugin.desktop	(revision 0)
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Encoding=UTF-8
+X-Kate-Version=2.8
+X-KDE-Library=katetabifyplugin
+ServiceTypes=Kate/Plugin
+Type=Service
+Icon=korganizer
+Name=Tabify
+Comment=Adds a tab bar to Kate's main window
Index: tabify/CMakeLists.txt
===================================================================
--- tabify/CMakeLists.txt	(revision 0)
+++ tabify/CMakeLists.txt	(revision 0)
@@ -0,0 +1,13 @@
+find_package(KDE4 REQUIRED)
+include (KDE4Defaults)
+include_directories(${KDE4_INCLUDES})
+
+kde4_add_plugin(katetabifyplugin tabify.cpp)
+
+target_link_libraries(katetabifyplugin  ${KDE4_KDEUI_LIBS} ${KDE4_KPARTS_LIBS} kateinterfaces)
+
+install(TARGETS katetabifyplugin DESTINATION ${PLUGIN_INSTALL_DIR})
+
+####################### install files #########################################
+install(FILES ui.rc DESTINATION ${DATA_INSTALL_DIR}/kate/plugins/katetabify)
+install(FILES  katetabifyplugin.desktop DESTINATION ${SERVICES_INSTALL_DIR})