readmail.cpp

Qtopia下的邮件处理程序

	}

	it++;
    }
    if ( !str.isEmpty() ) {
	out.append( str );
	levelList.append( level );
    }

    str = "<nobr>"; // tell the textview that we're in control of linebreaks
    lastLevel = 0;
    int pos = 0;
    it = out.begin();
    while ( it != out.end() ) {
	if ( levelList[pos] == 0 ) {
	    str += buildParagraph( *it, "" ) + "<br>";
	} else {
	    QString pre = "";
	    QString preString = "";
	    for ( int x = 0; x < (int)levelList[pos]; x++) {
		pre += "&gt ";
		preString += "> ";
	    }

	    // single lines ">" are dropped, so we insert this for better clarity
	    if ( (int)levelList[pos] < lastLevel ) {
		str += "<font color=\"FF0000\">" + pre +"</font> <br>";
	    }

	    p = buildParagraph( *it, preString ).split("<br>" );

	    if ( levelList[pos] % 2 == 0 ) {
		str += "<font color=\"#0000FF\">";
	    } else {
		str += "<font color=\"#FF0000\">";
	    }
	    str += pre + p.join("<br> " + pre) + "</font><br>";
	}

	lastLevel = levelList[pos];
	pos++;
	it++;
    }

    if ( str.indexOf("<br>", -4) != -1 ) {
	str.truncate( str.length() - 4 );   //remove trailing br
    }
    str += "</nobr>";

    return str;
}

QString ReadMail::buildParagraph(QString txt, QString prepend, bool preserveWs)
{
    QStringList out;

    //use escape here so we don't clutter our <br>
    QStringList p;
    if (preserveWs) {
	txt = Qt::escape( txt );
	p = txt.split(" ", QString::KeepEmptyParts);
    } else {
	txt = Qt::escape( txt.simplified() );
        p = txt.split(" ");
    }
    QStringList::Iterator it = p.begin();

    QString str;
    QFontMetrics fm( emailView->font() );
//    int w = emailView->viewport()->width()-20;
    int w = pWidth() - 20;
    while ( it != p.end() ) {

	if ( fm.width( prepend + (*it) + str) > w ) {
	    if ( str.isEmpty() ) {
		out.append( *it );
	    } else {
		out.append( str );
		str = *it;
	    }
	} else if ( str.length() == 0 ) {
	    str = *it;
	} else {
	    str += " " + *it;
	}
	it++;
    }

    if ( !str.isEmpty() )
	out.append( str );

    return out.join("<br>");
}

/*  This one is called after Qt::escape, so if the email address is of type<some@rtg> we
    have to remove the safe characters at the beginning and end.  It's not a foolproof method, but
    it should handle nearly all cases.  To make it foolproof add methods to determine legal/illegal
    characters in the url/email addresses.
*/
QString ReadMail::encodeUrlAndMail(QString txt)
{
    QString emailAddress, url;
    QString str(txt);
    const QString validChars = QString(".!#$%'*+-/=?^_`{|}~");

    // Find and encode email addresses
    int pos = 0;
    while ( ( pos = str.indexOf('@', pos) ) != -1 ) {
	int beg = pos - 1;
	while ( beg >= 0 &&
		( str[beg].isLetterOrNumber() || (validChars.indexOf( str[beg] ) != -1 )))
	    beg--;
	if (beg < 0)
	    beg = 0;
	if ( !str[beg].isLetterOrNumber() && (validChars.indexOf( str[beg] ) == -1 ))
	    beg++;

	int endPos = pos + 1;
	if (endPos >= (int)str.length())
	    endPos = pos;
	while ( endPos < (int)str.length() &&
		( str[endPos].isLetterOrNumber() || (validChars.indexOf( str[endPos] ) != -1 )))
	    endPos++;
	if ( !str[endPos].isLetterOrNumber() && (validChars.indexOf( str[endPos] ) == -1 ))
	    endPos--;
	
	emailAddress = str.mid(beg, endPos - beg + 1);
	if ( emailAddress.startsWith("&lt;") ) {
	    emailAddress = emailAddress.right( emailAddress.length() - 4);
	    beg += 4;
	
	    if ( emailAddress.indexOf("&gt;", -4) != -1 ) {
		emailAddress = emailAddress.left( emailAddress.length() - 4 );
	    	endPos -= 4;
	    }
	}
	
	if ( emailAddress.lastIndexOf('.', -1) > endPos - pos ) {	//Scan for . after @ to verify that it is an email address
	
	    QString s = refMailTo(emailAddress);
	    str.replace(beg, endPos - beg + 1, s);
	
	    pos = beg + s.length();
	} else {
	    pos = endPos + 1;
	}
    }

    // Find and encode http addresses
    pos = 0;
    const QString httpStr = "http://";
    const QString wwwStr = "www.";

    while ( ( ( str.indexOf(httpStr, pos) ) != -1 ) ||
	    ( ( str.indexOf(wwwStr, pos) ) != -1 ) ) {
	int httpPos = str.indexOf(httpStr, pos);
	int wwwPos = str.indexOf(wwwStr, pos);
	int endPos = 0;
	QString urlPrefix;

	if ( (httpPos != -1) && ((wwwPos == -1) || (httpPos < wwwPos)) ) {
	    pos = httpPos;
	    endPos = pos + httpStr.length();
	} else {
	    pos = wwwPos;
	    endPos = pos + wwwStr.length();
	    urlPrefix = "http://";
	}

	while ( endPos < (int)str.length() &&
		( str[endPos].isLetterOrNumber() || (validChars.indexOf( str[endPos] ) != -1 )))
	    endPos++;
	if (endPos >= (int)str.length() ||
	    (!str[endPos].isLetterOrNumber() && (validChars.indexOf( str[endPos] ) == -1 )))
	    endPos--;

	url = str.mid(pos, endPos - pos + 1);

	if ( url.indexOf('.') > -1 ) {	//Scan for . after // to verify that it is an url (weak, I know)
	    QString s = "<a href=\"" + urlPrefix + url + "\"> " + url + " </a>";
	    str.replace(pos, endPos - pos + 1, s);
	
	    pos += s.length();
	} else {
	    pos = endPos + 1;
	}
    }

    return str;
}

QString ReadMail::listRefMailTo(QStringList list)
{
    QString str;
    for (QStringList::Iterator it = list.begin(); it != list.end(); ++it)
    {
	if ( str.isEmpty() ) {
	    str += refMailTo( *it );
	} else {
	    str += ", " + refMailTo( *it );
	}
    }

    return str;
}

QString ReadMail::refMailTo(QString adr)
{
    int type = adr.indexOf("/TYPE=");
    if (type > 0)
	adr.truncate(type);
    return "<a href=\"mailto:" + Qt::escape(adr) + "\"> " + Qt::escape(adr) + " </a>";
}

//update view with current EmailListItem (item)
void ReadMail::update(MailListView *view)
{
    mailView = view;
    EmailListItem *current = (EmailListItem *) view->currentItem();

    if ( !current || !view->isItemSelected( current ) ) {
	close();
	return;
    }

    mail = current->mail();
    lastMailUuid = mail->uuid();
    QString mailbox = mailView->currentMailbox();

#ifdef QTOPIA_PHONE
    context->clear();

    if ( hasGet(mailbox) )
	context->addAction( getThisMailButton );
    else if ( hasSend(mailbox) )
	context->addAction( sendThisMailButton );

    if ( hasReply(mailbox) ) {
	context->addAction( replyButton );
	context->addAction( replyAllAction );
	context->addAction( forwardAction );
    }

    if ( hasEdit(mailbox) )
	context->addAction( modifyButton );

    context->addAction( deleteButton );
    context->addAction( plainTextButton );
    //what about next/prev/attachments/status?
#else
#ifdef QTOPIA4_TODO
    bar->clear();

    if ( hasGet(mailbox) )
	getThisMailButton->addTo(bar);

    if ( hasSend(mailbox) )
	sendThisMailButton->addTo(bar);

    if ( hasReply(mailbox) )
	replyButton->addTo(bar);

    if ( hasEdit(mailbox) )
	modifyButton->addTo(bar);

    previousButton->addTo(bar);
    nextButton->addTo(bar);
    deleteButton->addTo(bar);

    buildMenu(mailbox);
#endif    
#endif

    updateView();
    updateButtons();
}

void ReadMail::buildMenu(const QString &mailbox)
{
#ifdef QTOPIA_PHONE
    QString unused = mailbox;
#else
#ifdef QTOPIA4_TODO
    mailMenu->clear();
    statusMenu->clear();

    if ( hasGet(mailbox) ) {
	getThisMailButton->addTo( mailMenu );
	mailMenu->insertSeparator();
    }

    if ( hasSend(mailbox) ) {
	sendThisMailButton->addTo( mailMenu );
	mailMenu->insertSeparator();
    }

    if ( hasReply(mailbox) ) {
	replyButton->addTo( mailMenu );
	replyAllAction->addTo( mailMenu );
	forwardAction->addTo( mailMenu );
    }

    if ( hasEdit(mailbox) ) {
	modifyButton->addTo( mailMenu );
    }

    mailMenu->insertSeparator();
    mailMenu->insertItem(tr("Set status"), statusMenu);
    mailMenu->insertSeparator();
    deleteButton->addTo(mailMenu);

    statusMenu->insertItem(tr("Unread"), this, SLOT( setStatus(int) ), 0, 1);
    statusMenu->insertItem(tr("Replied"), this, SLOT( setStatus(int) ), 0, 2);
    statusMenu->insertItem(tr("Forwarded"), this, SLOT( setStatus(int) ), 0, 3);

    statusMenu->insertItem(tr("Sent"), this, SLOT( setStatus(int) ), 0, 4);
    statusMenu->insertItem(tr("Unsent"), this, SLOT( setStatus(int) ), 0, 5);
#endif
#endif
}

void ReadMail::mailUpdated(Email *mailIn)
{
    if ( lastMailUuid == mailIn->uuid() ) {
	mail = mailIn;
	updateView();
	updateButtons();
    } else {
	updateButtons();
    }
}

#ifdef QTOPIA_PHONE
bool ReadMail::eventFilter( QObject *obj, QEvent *e )
{
    if (obj == emailView && e->type() == QEvent::KeyPress) {
	QKeyEvent *keyEvent = (QKeyEvent*)e;
	switch( keyEvent->key() ) {
	case Qt::Key_Left:
	    emailView->scrollBy(-100,0);
	    keyEvent->accept();
	    return true;
	    break;
	case Qt::Key_Right:
	    emailView->scrollBy(100,0);
	    keyEvent->accept();
	    return true;
	    break;
	default:
	    break;
	}
#ifndef QTOPIA_NO_MMS
    } else if (smilView && obj == smilView && e->type() == QEvent::KeyPress) {
	QKeyEvent *keyEvent = (QKeyEvent*)e;
	switch( keyEvent->key() ) {
	    case Qt::Key_Select:
		advanceMmsSlide();
		break;
	}
#endif
    }
    return QMainWindow::eventFilter( obj, e );
}
#endif

void ReadMail::closeEvent( QCloseEvent *e )
{
    //check for read reply flag
    
#ifdef QTOPIA_PHONE
#ifndef QTOPIA_NO_MMS
    QString mmsType = mail->header("X-Mms-Message-Type");
    QString msgClass = mail->header("X-Mms-Message-Class");
    QString readReply = mail->header("X-Mms-Read-Reply");

    if (mmsType.contains("m-retrieve-conf") && !msgClass.contains("Auto")
        && readReply.contains("Yes") && firstRead) {
        emit readReplyRequested(mail);
        }
        
    if (smilView && views->currentWidget() == smilView) {
        views->setCurrentWidget(emailView);
        smilView->reset();
        e->ignore();
        return;
}
#endif
#endif
    cleanup();
    emit cancelView();
}

void ReadMail::cleanup()
{
    emailView->setPlainText("");
}

//gets next item in listview, exits if there is no next
void ReadMail::next()
{
    EmailListItem *item = (EmailListItem *) mailView->currentItem();
    if (item && mailView->isItemSelected(item) && 
	mailView->row( item ) + 1 < mailView->rowCount() )
	item = (EmailListItem* )mailView->item( mailView->row( item ) + 1, 0 );
    else
       item = 0;

    if (item != NULL) {
	mailView->clearSelection();
        mailView->setItemSelected( item, true );
        mailView->setCurrentItem( item );

        bool inbox = mail->status(EFlag_Incoming) > 0;
        mail = item->mail();
	lastMailUuid = mail->uuid();
	
        if ( inbox == (mail->status(EFlag_Incoming) > 0) ) {
	    updateView();
        } else {
	    update( mailView );
        }

        updateButtons();
    }
}

//gets previous item in listview, exits if there is no previous
void ReadMail::previous()
{
    EmailListItem *item = (EmailListItem *) mailView->currentItem();
    if (item && mailView->isItemSelected(item) &&
	mailView->row( item ) > 0 )
	item = (EmailListItem* )mailView->item( mailView->row( item ) - 1, 0 );
    else
	item = 0;

    if (item != NULL) {
	mailView->clearSelection();
	mailView->setItemSelected( item, true );
        mailView->setCurrentItem( item );

        bool inbox = mail->status(EFlag_Incoming) > 0;
        mail = item->mail();
	lastMailUuid = mail->uuid();