messageviewer/htmlstatusbar.h

   1 /*  -*- c++ -*-
   2     htmlstatusbar.h
   3
   4     This file is part of KMail, the KDE mail client.
   5     Copyright (c) 2002 Ingo Kloecker <kloecker@kde.org>
   6     Copyright (c) 2003 Marc Mutz <mutz@kde.org>
   7
   8     KMail is free software; you can redistribute it and/or modify it
   9     under the terms of the GNU General Public License, version 2, as
  10     published by the Free Software Foundation.
  11
  12     KMail is distributed in the hope that it will be useful, but
  13     WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  20
  21     In addition, as a special exception, the copyright holders give
  22     permission to link the code of this program with any edition of
  23     the Qt library by Trolltech AS, Norway (or with modified versions
  24     of Qt that use the same license as Qt), and distribute linked
  25     combinations including the two.  You must obey the GNU General
  26     Public License in all respects for all of the code used other than
  27     Qt.  If you modify this file, you may extend this exception to
  28     your version of the file, but you are not obligated to do so.  If
  29     you do not wish to do so, delete this exception statement from
  30     your version.
  31 */
  32 #ifndef _MESSAGEVIEWER_HTMLSTATUSBAR_H_
  33 #define _MESSAGEVIEWER_HTMLSTATUSBAR_H_
  34
  35 #include "util.h"
  36 #include <QLabel>
  37 class QString;
  38 class QColor;
  39 class QMouseEvent;
  40
  41 namespace MessageViewer {
  42
  43 /**
  44   * @short The HTML statusbar widget for use with the reader.
  45   *
  46   * The HTML status bar is a small widget that acts as an indicator
  47   * for the message content. It can be in one of four modes:
  48   *
  49   * <dl>
  50   * <dt><code>Normal</code></dt>
  51   * <dd>Default. No HTML.</dd>
  52   * <dt><code>Html</code></dt>
  53   * <dd>HTML content is being shown. Since HTML mails can mimic all sorts
  54   *     of KMail markup in the reader, this provides out-of-band information
  55   *     about the presence of (rendered) HTML.</dd>
  56   * <dt><code>MultipartPlain</code></dt>
  57   * <dd>Viewed as plain text with HTML part also available.</dd>
  58   * <dt><code>MultipartHtml</code></dt>
  59   * <dd>Viewed as Html with plain text part also available.</dd>
  60   * </dl>
  61   *
  62   * @author Ingo Kloecker <kloecker@kde.org>, Marc Mutz <mutz@kde.org>
  63   **/
  64 class HtmlStatusBar : public QLabel {
  65   Q_OBJECT
  66 public:
  67   enum UpdateMode {
  68     NoUpdate,
  69     Update
  70   };
  71
  72   explicit HtmlStatusBar( QWidget * parent=0, const char * name=0, Qt::WFlags f=0 );
  73   virtual ~HtmlStatusBar();
  74
  75   /** @return current mode. */
  76   Util::HtmlMode mode() const { return mMode ; }
  77   bool isHtml() const { return mode() == Util::Html; }
  78   bool isNormal() const { return mode() == Util::Normal; }
  79   bool isMultipartHtml() const { return mode() == Util::MultipartHtml; }
  80   bool isMultipartPlain() const { return mode() == Util::MultipartPlain; }
  81
  82   // Update the status bar, for example when the color scheme changed.
  83   void update();
  84
  85 public slots:
  86   void setHtmlMode();
  87   /** Switch to "normal mode". */
  88   void setNormalMode();
  89   /** Switch to "multipart html mode". */
  90   void setMultipartHtmlMode();
  91   /** Switch to "multipart plain mode". */
  92   void setMultipartPlainMode();
  93   /** Switch to mode @p m */
  94   void setMode( Util::HtmlMode m, UpdateMode mode = Update );
  95
  96 signals:
  97
  98   /** The user has clicked the status bar. */
  99   void clicked();
 100
 101 protected:
 102
 103   void mousePressEvent( QMouseEvent * event );
 104
 105 private:
 106   QString message() const;
 107   QString toolTip() const;
 108   QColor bgColor() const;
 109   QColor fgColor() const;
 110
 111   Util::HtmlMode mMode;
 112 };
 113
 114 }
 115
 116 #endif // _KMAIL_HTMLSTATUSBAR_H_