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tdepim/knode/articlewidget.h

270 lines
7.8 KiB

/*
KNode, the KDE newsreader
Copyright (c) 2005 Volker Krause <volker.krause@rwth-aachen.de>
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.
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, US
*/
#ifndef KNODE_ARTICLEWIDGET_H
#define KNODE_ARTICLEWIDGET_H
#include <tqmap.h>
#include <tqvaluelist.h>
#include <tqwidget.h>
#include <kurl.h>
#include <kmime_content.h>
#include "knjobdata.h"
class TQStringList;
class TQTimer;
class KAction;
class KActionCollection;
class KActionMenu;
class KHTMLPart;
class KURL;
class KSelectAction;
class KToggleAction;
class KXMLGUIClient;
namespace Kpgp {
class Block;
}
class KNArticle;
class KNArticleCollection;
namespace KNode {
class CSSHelper;
/**
Widget to display a news article
*/
class ArticleWidget : public TQWidget, public KNJobConsumer {
Q_OBJECT
public:
/// Construct a new article widget
ArticleWidget( TQWidget *parent,
KXMLGUIClient *guiClient,
KActionCollection *actionCollection,
const char *name = 0 );
~ArticleWidget();
/// read config settings
void readConfig();
/// write config settings (call only for the main viewer)
void writeConfig();
/// display the given article
void setArticle( KNArticle *article );
/// returns the currently shown article
KNArticle *article() const { return mArticle; }
KAction* setCharsetKeyboardAction() const { return mCharsetSelectKeyb; }
/// notify all instances about a config change
static void configChanged();
/// check wether the given article is displayed in any instance
static bool articleVisible( KNArticle *article );
/// notify all instances that the given article has been removed
static void articleRemoved( KNArticle *article );
/// notify all instances that the given article has changed
static void articleChanged( KNArticle *article );
/// notify all instances about an error during loading the given article
static void articleLoadError( KNArticle *article, const TQString &error );
/// notify all instances that the given collection has been removed
static void collectionRemoved( KNArticleCollection *coll );
/// cleanup all instances
static void cleanup();
/// checks wether the readers is scrolled down to the bottom
bool atBottom() const;
public slots:
void scrollUp();
void scrollDown();
void scrollPrior();
void scrollNext();
signals:
void focusChanged( TQFocusEvent* );
void focusChangeRequest( TQWidget* );
protected:
/// process download jobs for view source action
void processJob( KNJobData *j );
virtual void focusInEvent( TQFocusEvent *e );
virtual void focusOutEvent( TQFocusEvent *e );
virtual bool eventFilter( TQObject *o, TQEvent *e );
private:
void initActions();
/// enable article dependent actions
void enableActions();
/// disable article dependent actions
void disableActions();
/// clears the article viewer
void clear();
/// displays the current article or clears the view if no article is set
void displayArticle();
/// displays the given error message in the viewer
void displayErrorMessage( const TQString &msg );
/// display the message header (should be replaced by KMail's HeaderStyle class)
void displayHeader();
/** displays the given text block, including quote and signature handling
* @param lines A list of lines to display.
*/
void displayBodyBlock( const TQStringList &lines );
/// displays a signature block header
TQString displaySigHeader( Kpgp::Block* block );
/// displays a signature footer
void displaySigFooter( const TQString &signClass );
/// displays the given attachment
void displayAttachment( KMime::Content *att, int partNum );
/// HTML conversion flags for toHtmlString()
enum ConversionFlags {
None = 0,
ParseURL = 1,
FancyFormatting = 2,
AllowROT13 = 4
};
/// convert the given string into an HTML string
TQString toHtmlString( const TQString &line, int flags = ParseURL );
/// convert the given image into a data:/ URL
static TQString imgToDataUrl( const TQImage &image, const char* fmt );
/** calculates the quoting depth of the given line
* @returns -1 if no quoting was found, the quoting level otherwise
*/
static int quotingDepth( const TQString &line, const TQString &quoteChars );
/// checks wether the given attachment can be shown inline
bool inlinePossible( KMime::Content *c );
/// checks if the given charset is supported
bool canDecodeText( const TQCString &charset ) const;
/// regenerated viewer content without changing scrollbar position
void updateContents();
/** stores the given attachment into a temporary file
* @returns the filename the attachment has been stored to
*/
TQString writeAttachmentToTempFile( KMime::Content *att, int partNum );
/// removes all temporary files
void removeTempFiles();
private slots:
/// called if the user clicked on an URL
void slotURLClicked( const KURL &url, bool forceOpen = false );
/// called if the user RMB clicked on an URL
void slotURLPopup( const TQString &url, const TQPoint &point );
/// mark as read timeout
void slotTimeout();
void slotSave();
void slotPrint();
void slotCopySelection();
void slotSelectAll();
void slotFind();
void slotViewSource();
void slotReply();
void slotRemail();
void slotForward();
void slotCancel();
void slotSupersede();
void slotToggleFixedFont();
void slotToggleFancyFormating();
void slotToggleRot13();
void slotFancyHeaders();
void slotStandardHeaders();
void slotAllHeaders();
void slotIconAttachments();
void slotInlineAttachments();
void slotHideAttachments();
void slotSetCharset( const TQString &charset );
void slotSetCharsetKeyboard();
void slotOpenURL();
void slotCopyURL();
void slotAddBookmark();
void slotAddToAddressBook();
void slotOpenInAddressBook();
void slotOpenAttachment();
void slotSaveAttachment();
private:
/// the currently shown article
KNArticle *mArticle;
/// attachments of the current article
KMime::Content::List mAttachments;
/// mapping of temporary file names to part numbers
TQMap<TQString, int> mAttachementMap;
KHTMLPart *mViewer;
CSSHelper *mCSSHelper;
TQStringList mTempDirs, mTempFiles;
TQString mHeaderStyle;
TQString mAttachmentStyle;
bool mShowHtml;
bool mRot13;
bool mForceCharset;
TQCString mOverrideCharset;
/// mark as read timer
TQTimer *mTimer;
/// the last RMB clicked URL
KURL mCurrentURL;
/// list of all instances of this class
static TQValueList<ArticleWidget*> mInstances;
KXMLGUIClient *mGuiClient;
KActionCollection *mActionCollection;
KAction *mSaveAction;
KAction *mPrintAction;
KAction *mCopySelectionAction;
KAction *mSelectAllAction;
KAction *mFindAction;
KAction *mViewSourceAction;
KAction *mCharsetSelectKeyb;
KAction *mReplyAction;
KAction *mRemailAction;
KAction *mForwardAction;
KAction *mCancelAction;
KAction *mSupersedeAction;
KActionMenu *mHeaderStyleMenu;
KActionMenu *mAttachmentStyleMenu;
KToggleAction *mFixedFontToggle;
KToggleAction *mFancyToggle;
KToggleAction *mRot13Toggle;
KSelectAction *mCharsetSelect;
};
}
#endif