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/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 292 insertions, 0 deletions

diff --git a/akregator/src/feed.h b/akregator/src/feed.h
new file mode 100644
index 000000000..e3e63da06
--- /dev/null
+++ b/akregator/src/feed.h
@@ -0,0 +1,292 @@
+/*
+    This file is part of Akregator.
+
+    Copyright (C) 2004 Stanislav Karchebny <Stanislav.Karchebny@kdemail.net>
+                  2005 Frank Osterfeld <frank.osterfeld at kdemail.net>
+
+    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.
+
+    As a special exception, permission is given to link this program
+    with any edition of Qt, and distribute the resulting executable,
+    without including the source code for Qt in the source distribution.
+*/
+
+#ifndef AKREGATORFEED_H
+#define AKREGATORFEED_H
+
+#include "treenode.h"
+#include "librss/librss.h"
+
+class QDomElement;
+class QPixmap;
+class QString;
+class QStringList;
+class KURL;
+
+
+namespace KPIM {
+    class ProgressItem;
+}
+
+// needed for slot fetchCompleted()
+using RSS::Document;
+using RSS::Loader;
+using RSS::Status;
+
+namespace Akregator
+{
+    class Article;
+    class FetchQueue;
+    class Folder;
+    class TreeNodeVisitor;
+
+    namespace Backend
+    {
+        class FeedStorage;
+    }
+    /**
+        represents a feed
+     */
+    class Feed : public TreeNode
+    {
+        friend class Article;
+        
+        Q_OBJECT
+        public:
+            /** the archiving modes:
+                - globalDefault: use default from Settings (default)
+                - keepAllArticles: Don't delete any articles
+                - disableArchiving: Don't save any articles except articles with keep flag set (equal to maxArticleNumber() == 0)
+                - limitArticleNumber: Save maxArticleNumber() articles, plus the ones with keep flag set
+                - limitArticleAge: Save articles not older than maxArticleAge() (or keep flag set)
+             */
+            enum ArchiveMode { globalDefault, keepAllArticles, disableArchiving, limitArticleNumber, limitArticleAge };
+
+            // class methods
+            /** converts strings to ArchiveMode value
+             if parsing fails, it returns ArchiveMode::globalDefault
+             */
+            static ArchiveMode stringToArchiveMode(const QString& str);
+
+            /** converts ArchiveMode values to corresponding strings */
+            static QString archiveModeToString(ArchiveMode mode);
+
+            /** creates a Feed object from a description in OPML format */
+            static Feed* fromOPML(QDomElement e);
+
+            /** default constructor */
+            Feed();
+
+            virtual ~Feed();
+
+            virtual bool accept(TreeNodeVisitor* visitor);
+
+            /** exports the feed settings to OPML */
+            virtual QDomElement toOPML( QDomElement parent, QDomDocument document ) const;
+
+            /**
+              returns whether this feed uses its own fetch interval or the global setting
+              @return @c true iff this feed has a custom fetch interval
+             */
+            bool useCustomFetchInterval() const;
+
+            /** set if the feed has its custom fetch interval or uses the
+                global setting
+                @param enabled @c true: use custom interval, @c false: use global default
+             */
+            void setCustomFetchIntervalEnabled(bool enabled);
+
+            // FIXME is it -1 or 0 to disable interval fetching?
+            /** Returns custom auto fetch interval of this feed.
+            @return custom fetch interval in minutes, 0 if disabled */
+            int fetchInterval() const;
+
+            /** Sets custom auto fetch interval.
+            @param interval interval in minutes, -1 for disabling auto fetching */
+            void setFetchInterval(int interval);
+
+            /** returns the archiving mode which is used for this feed */
+            ArchiveMode archiveMode() const;
+
+            /** sets the archiving mode for this feed */
+            void setArchiveMode(ArchiveMode archiveMode);
+
+            /** returns the maximum age of articles used for expiration by age (used in @c limitArticleAge archive mode)
+            @return expiry age in days */
+            int maxArticleAge() const;
+
+            /** sets the maximum age of articles used for expiration by age (used in @c limitArticleAge archive mode)
+            @param maxArticleAge expiry age in days */
+            void setMaxArticleAge(int maxArticleAge);
+            
+
+            /** returns the article count limit used in @c limitArticleNumber archive mode **/
+            int maxArticleNumber() const;
+
+            /** sets the article count limit used in @c limitArticleNumber archive mode **/
+            void setMaxArticleNumber(int maxArticleNumber);
+
+            /** if @c true, new articles are marked immediately as read instead of new/unread. Useful for high-traffic feeds. */
+            bool markImmediatelyAsRead() const;
+
+            void setMarkImmediatelyAsRead(bool enabled);
+
+            void setUseNotification(bool enabled);
+
+            bool useNotification() const;
+
+            /** if true, the linked URL is loaded directly in the article viewer instead of showing the description */
+            void setLoadLinkedWebsite(bool enabled);
+
+            bool loadLinkedWebsite() const;
+            
+            /** returns the favicon */
+            const QPixmap& favicon() const;
+
+            /** sets the favicon (used in the tree view) */
+            void setFavicon(const QPixmap& p);
+
+            /** returns the feed image */
+            const QPixmap& image() const;
+
+            /** returns the url of the actual feed source (rss/rdf/atom file) */
+            const QString& xmlUrl() const;
+            /** sets the url of the actual feed source (rss/rdf/atom file) */
+            void setXmlUrl(const QString& s);
+
+            /** returns the URL of the HTML page of this feed */
+            const QString& htmlUrl() const;
+            /** sets the URL of the HTML page of this feed */
+            void setHtmlUrl(const QString& s);
+
+            /** returns the description of this feed */
+            const QString& description() const;
+
+            /** sets the description of this feed */
+            void setDescription(const QString& s);
+
+            virtual QValueList<Article> articles(const QString& tag=QString::null);
+
+            /** returns the article with the given @c guid, or a null article if it not exists */
+            virtual Article findArticle(const QString& guid) const;
+            
+            virtual QStringList tags() const;
+            
+            /** returns whether a fetch error has occurred */
+            bool fetchErrorOccurred();
+
+            /** returns the unread count for this feed */
+            virtual int unread() const;
+
+            /** returns the number of total articles in this feed
+            @return number of articles */
+
+            virtual int totalCount() const;
+
+            /** returns if the article archive of this feed is loaded */
+            bool isArticlesLoaded() const;
+
+           /** returns if this node is a feed group (@c false here) */
+            virtual bool isGroup() const { return false; }
+
+            /** returns the next node in the tree.
+            Calling next() unless it returns 0 iterates through the tree in pre-order
+            */
+            virtual TreeNode* next();
+
+            /** downloads the favicon */
+            void loadFavicon();
+            
+            /** load the image from the cache if it is in there */
+            void loadImage();
+            
+        public slots:
+            /** starts fetching */
+            void fetch(bool followDiscovery=false);
+
+            void slotAbortFetch();
+
+            /** deletes expired articles */
+            virtual void slotDeleteExpiredArticles();
+
+            /** mark all articles in this feed as read */
+            virtual void slotMarkAllArticlesAsRead();
+
+            /** add this feed to the fetch queue @c queue */
+            virtual void slotAddToFetchQueue(FetchQueue* queue, bool intervalFetchOnly=false);
+
+        signals:
+            /** emitted when fetching started */
+            void fetchStarted(Feed*);
+            /** emitted when feed finished fetching */
+            void fetched(Feed *);
+            /** emitted when a fetch error occurred */
+            void fetchError(Feed *);
+            /** emitted when a feed URL was found by auto discovery */
+            void fetchDiscovery(Feed *);
+            /** emitted when a fetch is aborted */
+            void fetchAborted(Feed *);
+           
+        protected:
+            /** loads articles from archive **/
+            void loadArticles();
+
+            void recalcUnreadCount();
+
+            virtual void doArticleNotification();
+
+            /** sets the unread count for this feed */
+            void setUnread(int unread);
+
+            
+        private slots:
+
+            void fetchCompleted(Loader *loader, Document doc, Status status);
+            void slotImageFetched(const QPixmap& image);
+
+        private:
+            
+            /** notifies that article @c mya was set to "deleted".
+                To be called by @ref Article
+             */
+            void setArticleDeleted(Article& a);
+
+            /** notifies that article @c mya was changed
+                @param oldStatus if the status was changed, it contains the old status, -1 otherwise
+                To be called by @ref Article
+             */
+            void setArticleChanged(Article& a, int oldStatus=-1);
+            
+            void enforceLimitArticleNumber();
+
+            void appendArticles(const RSS::Document &d);
+            /** appends article @c a to the article list */
+            void appendArticle(const Article& a);
+
+            /** checks whether article @c a is expired (considering custom and global archive mode settings) */
+            bool isExpired(const Article& a) const;
+
+            /** returns @c true if either this article uses @c limitArticleAge as custom setting or uses the global default, which is @c limitArticleAge */
+            bool usesExpiryByAge() const;
+
+            /** executes the actual fetch action */
+            void tryFetch();
+
+            class FeedPrivate;
+            FeedPrivate* d;
+    };
+}
+
+#endif