apps/lib/konq/favicons/favicons.h

   1 /* This file is part of the KDE Project
   2    Copyright (c) 2001 Malte Starostik <malte@kde.org>
   3
   4    This library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public
   6    License version 2 as published by the Free Software Foundation.
   7
   8    This library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Library General Public License for more details.
  12
  13    You should have received a copy of the GNU Library General Public License
  14    along with this library; see the file COPYING.LIB.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18
  19 #ifndef _FAVICONS_H_
  20 #define _FAVICONS_H_
  21
  22 #include <kdedmodule.h>
  23 #include <kurl.h>
  24
  25 class KJob;
  26 namespace KIO { class Job; }
  27
  28 /**
  29  * KDED Module to handle shortcut icons ("favicons")
  30  * FavIconsModule implements a KDED Module that handles the association of
  31  * URLs and hosts with shortcut icons and the icons' downloads in a central
  32  * place.
  33  *
  34  * After a successful download, the DBUS signal iconChanged() is emitted.
  35  * It has the signature void iconChanged(bool, QString, QString);
  36  * The first parameter is true if the icon is a "host" icon, that is it is
  37  * the default icon for all URLs on the given host. In this case, the
  38  * second parameter is a host name, otherwise the second parameter is the
  39  * URL which is associated with the icon. The third parameter is the
  40  * @ref KIconLoader friendly name of the downloaded icon, the same as
  41  * @ref iconForUrl will from now on return for any matching URL.
  42  *
  43  * @short KDED Module for favicons
  44  * @author Malte Starostik <malte@kde.org>
  45  */
  46 class FavIconsModule : public KDEDModule
  47 {
  48     Q_OBJECT
  49 public:
  50     FavIconsModule(QObject* parent, const QList<QVariant>&);
  51     virtual ~FavIconsModule();
  52
  53 public Q_SLOTS: // dbus methods, called by the adaptor
  54     /**
  55      * Looks up an icon name for a given URL. This function does not
  56      * initiate any download. If no icon for the URL or its host has
  57      * been downloaded yet, QString() is returned.
  58      *
  59      * @param url the URL for which the icon is queried
  60      * @return the icon name suitable to pass to @ref KIconLoader or
  61      *         QString() if no icon for this URL was found.
  62      */
  63     QString iconForUrl(const KUrl &url);
  64
  65     /**
  66      * Associates an icon with the given URL. If the icon was not
  67      * downloaded before or the downloaded was too long ago, a
  68      * download attempt will be started and the iconChanged() DBUS
  69      * signal is emitted after the download finished successfully.
  70      *
  71      * @param url the URL which will be associated with the icon
  72      * @param iconURL the URL of the icon to be downloaded
  73      */
  74     void setIconForUrl(const KUrl &url, const KUrl &iconURL);
  75     /**
  76      * Downloads the icon for a given host if it was not downloaded before
  77      * or the download was too long ago. If the download finishes
  78      * successfully, the iconChanged() DBUS signal is emitted.
  79      *
  80      * @param url any URL on the host for which the icon is to be downloaded
  81      */
  82     void downloadHostIcon(const KUrl &url);
  83
  84 signals: // DBUS signals
  85     /**
  86      * Emitting once a new icon is available, for a host or url
  87      */
  88     void iconChanged(bool isHost, QString hostOrURL, QString iconName);
  89     /**
  90      * Progress info while downloading an icon
  91      */
  92     void infoMessage(QString iconURL, QString msg);
  93
  94 private:
  95     void startDownload(const QString &, bool, const KUrl &);
  96     QString simplifyURL(const KUrl &);
  97     QString iconNameFromURL(const KUrl &);
  98     bool isIconOld(const QString &);
  99
 100 private Q_SLOTS:
 101     void slotData(KIO::Job *, const QByteArray &);
 102     void slotResult(KJob *);
 103     void slotInfoMessage(KJob *, const QString &);
 104     void slotKill();
 105
 106 private:
 107     struct FavIconsModulePrivate *d;
 108 };
 109
 110 #endif
 111
 112 // vim: ts=4 sw=4 et