Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 178 insertions, 0 deletions

diff --git a/kparts/statusbarextension.cpp b/kparts/statusbarextension.cpp
new file mode 100644
index 000000000..bd4e09b61
--- /dev/null
+++ b/kparts/statusbarextension.cpp
@@ -0,0 +1,178 @@
+/* This file is part of the KDE project
+   Copyright (C) 2003 Daniel Molkentin <[email protected]>
+   Copyright (C) 2003 David Faure <[email protected]>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+ */
+
+#include "statusbarextension.h"
+
+#include <qvaluelist.h>
+#include <qobjectlist.h>
+
+#include <kstatusbar.h>
+#include <kmainwindow.h>
+#include <kdebug.h>
+#include <kdelibs_export.h>
+#include <kparts/part.h>
+#include <kparts/event.h>
+
+using namespace KParts;
+
+///////////////////////////////////////////////////////////////////
+// Helper Classes
+///////////////////////////////////////////////////////////////////
+
+class KParts::StatusBarItem {
+  public:
+    StatusBarItem() // for QValueList
+      : m_widget(0), m_visible(false)
+      {}
+    StatusBarItem( QWidget * widget, int stretch, bool permanent )
+      : m_widget(widget), m_stretch(stretch), m_permanent(permanent), m_visible(false)
+      {}
+
+    QWidget * widget() const { return m_widget; }
+
+    void ensureItemShown( KStatusBar * sb )
+    {
+      if ( !m_visible )
+      {
+        sb->addWidget( m_widget, m_stretch, m_permanent );
+        m_visible = true;
+        m_widget->show();
+      }
+    }
+    void ensureItemHidden( KStatusBar * sb )
+    {
+      if ( m_visible )
+      {
+        sb->removeWidget( m_widget );
+        m_visible = false;
+        m_widget->hide();
+      }
+    }
+  private:
+    QWidget * m_widget;
+    int m_stretch;
+    bool m_permanent;
+    bool m_visible;  // true when the item has been added to the statusbar
+};
+
+///////////////////////////////////////////////////////////////////
+
+
+StatusBarExtension::StatusBarExtension(KParts::ReadOnlyPart *parent, const char* name)
+  : QObject(parent, name), m_statusBar(0), d(0)
+{
+  parent->installEventFilter(this);
+}
+
+StatusBarExtension::~StatusBarExtension()
+{
+}
+
+
+StatusBarExtension *StatusBarExtension::childObject( QObject *obj )
+{
+    if ( !obj || !obj->children() )
+        return 0L;
+
+    // we try to do it on our own, in hope that we are faster than
+    // queryList, which looks kind of big :-)
+    const QObjectList *children = obj->children();
+    QObjectListIt it( *children );
+    for (; it.current(); ++it )
+        if ( it.current()->inherits( "KParts::StatusBarExtension" ) )
+            return static_cast<KParts::StatusBarExtension *>( it.current() );
+
+    return 0L;
+}
+
+bool StatusBarExtension::eventFilter(QObject * watched, QEvent* ev)
+{
+  if ( !GUIActivateEvent::test( ev ) ||
+      !watched->inherits("KParts::ReadOnlyPart")  )
+      return QObject::eventFilter(watched, ev);
+
+  KStatusBar * sb = statusBar();
+  if ( !sb )
+      return QObject::eventFilter(watched, ev);
+
+  GUIActivateEvent *gae = static_cast<GUIActivateEvent*>(ev);
+
+  if ( gae->activated() )
+  {
+    QValueListIterator<StatusBarItem> it = m_statusBarItems.begin();
+    for ( ; it != m_statusBarItems.end() ; ++it )
+      (*it).ensureItemShown( sb );
+  }
+  else
+  {
+    QValueListIterator<StatusBarItem> it = m_statusBarItems.begin();
+    for ( ; it != m_statusBarItems.end() ; ++it )
+      (*it).ensureItemHidden( sb );
+  }
+
+  return false;
+
+}
+
+KStatusBar * StatusBarExtension::statusBar() const
+{
+  if ( !m_statusBar )  {
+    QWidget* w = static_cast<KParts::ReadOnlyPart*>(parent())->widget();
+    KMainWindow* mw = dynamic_cast<KMainWindow *>( w->topLevelWidget() );
+    if ( mw )
+      m_statusBar = mw->statusBar();
+  }
+  return m_statusBar;
+}
+
+void StatusBarExtension::setStatusBar( KStatusBar* status )
+{
+  m_statusBar = status;
+}
+
+void StatusBarExtension::addStatusBarItem( QWidget * widget, int stretch, bool permanent )
+{
+  m_statusBarItems.append( StatusBarItem( widget, stretch, permanent ) );
+  QValueListIterator<StatusBarItem> it = m_statusBarItems.fromLast();
+  KStatusBar * sb = statusBar();
+  Q_ASSERT(sb);
+  if (sb)
+    (*it).ensureItemShown( sb );
+}
+
+void StatusBarExtension::removeStatusBarItem( QWidget * widget )
+{
+  KStatusBar * sb = statusBar();
+  QValueListIterator<StatusBarItem> it = m_statusBarItems.begin();
+  for ( ; it != m_statusBarItems.end() ; ++it )
+    if ( (*it).widget() == widget )
+    {
+      if ( sb )
+        (*it).ensureItemHidden( sb );
+      m_statusBarItems.remove( it );
+      break;
+    }
+  if ( it == m_statusBarItems.end() )
+    kdWarning(1000) << "StatusBarExtension::removeStatusBarItem. Widget not found : " << widget << endl;
+}
+
+#include "statusbarextension.moc"
+
+// vim: ts=2 sw=2 et