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/*
This file is part of Akregator.
Copyright (C) 2004 Sashmit Bhaduri <smt@vfemail.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 ARTICLEVIEWER_H
#define ARTICLEVIEWER_H
#include <klocale.h>
#include <tqcolor.h>
#include <tqfont.h>
#include "article.h"
#include "articlefilter.h"
#include "viewer.h"
class QKeyEvent;
namespace Akregator
{
class Feed;
class Folder;
class TreeNode;
/** This HTML viewer is used to display articles.
Use the high-level interface provided by the public slots whereever possible (and extend them when necessary instead of using low-level methods).*/
class ArticleViewer : public Viewer
{
Q_OBJECT
public:
/** Constructor */
ArticleViewer(TQWidget* parent, const char* name);
virtual ~ArticleViewer();
virtual bool openURL(const KURL &url);
/** Repaints the view. */
void reload();
void displayAboutPage();
public slots:
// Commandment: We are your interfaces.
// You shall not use strange interfaces before us.
/** Show single article (normal view)
@param article the article to render */
void slotShowArticle(const Article& article);
/** Shows the articles of the tree node @c node (combined view). Changes in the node will update the view automatically.
@param node The node to observe */
void slotShowNode(TreeNode* node);
/** Set filters @c textFilter and @c statusFilter which will be used if the viewer is in combined view mode
@param textFilter text filter
@param statusFilter status filter */
void slotSetFilter(const Akregator::Filters::ArticleMatcher& textFilter, const Akregator::Filters::ArticleMatcher& statusFilter);
/** Update view if combined view mode is set. Has to be called when the displayed node gets modified. */
void slotUpdateCombinedView();
/** Clears the canvas and disconnects from the currently observed node (if in combined view mode). */
void slotClear();
void slotShowSummary(TreeNode *node);
virtual void slotPaletteOrFontChanged();
protected slots:
void slotArticlesUpdated(TreeNode* node, const TQValueList<Article>& list);
void slotArticlesAdded(TreeNode* node, const TQValueList<Article>& list);
void slotArticlesRemoved(TreeNode* node, const TQValueList<Article>& list);
protected:
virtual void keyPressEvent(TQKeyEvent* e);
virtual void urlSelected (const TQString &url, int button, int state, const TQString &_target, KParts::URLArgs args);
public: // compat with KDE-3.x assertions, remove for KDE 4
// private:
friend class ShowNodeSummaryVisitor;
class ShowSummaryVisitor;
ShowSummaryVisitor* m_showSummaryVisitor;
/** renders @c body. Use this method whereever possible.
@param body html to render, without header and footer */
void renderContent(const TQString& body);
/** Takes an article and renders it as HTML with settings for normal view and widescreen view
@param feed article's feed (used for feed icon atm) -- article.feed() would do. better use a (No)Icon flag. -fo
@param article The article to render
@return the rendered article as HTML */
TQString formatArticleNormalMode(Feed* feed, const Article& article);
/** Takes an article and renders it as HTML with settings for combined view
@param feed article's feed (used for feed icon atm) -- article.feed() would do. better use a (No)Icon flag. -fo
@param article The article to render
@return the rendered article as HTML */
TQString formatArticleCombinedMode(Feed* feed, const Article& article);
/** Resets the canvas and adds writes the HTML header to it.
*/
void beginWriting();
/** Finishes writing to the canvas and completes the HTML (by adding closing tags) */
void endWriting();
/** generates the CSS used for rendering in single article mode (normal and wide screen view) */
void generateNormalModeCSS();
/** generates the CSS for combined view mode */
void generateCombinedModeCSS();
void connectToNode(TreeNode* node);
void disconnectFromNode(TreeNode* node);
TQString m_normalModeCSS;
TQString m_combinedModeCSS;
TQString m_htmlFooter;
TQString m_currentText;
KURL m_imageDir;
TreeNode* m_node;
Article m_article;
KURL m_link;
Akregator::Filters::ArticleMatcher m_textFilter;
Akregator::Filters::ArticleMatcher m_statusFilter;
enum ViewMode { NormalView, CombinedView, SummaryView };
ViewMode m_viewMode;
};
}
#endif // ARTICLEVIEWER_H
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