mghtml_part.cpp

monqueror一个很具有参考价值的源玛

bool MGHTMLPart::restoreURL( const KURL &url )
{
//	d->m_redirectionTimer.stop();
//	kdDebug( 6050 ) << "closing old URL" << endl;
	closeURL();
	d->m_bComplete = false;
	d->m_workingURL = url;
  // set the java(script) flags according to the current host.
//	d->m_bJScriptEnabled = KHTMLFactory::defaultHTMLSettings()->isJavaScriptEnabled(url.host());
	d->m_bJScriptEnabled = false;
//	d->m_bJavaEnabled = KHTMLFactory::defaultHTMLSettings()->isJavaEnabled(url.host());
	d->m_bJavaEnabled = false;
	m_url = url;
//	KHTMLPageCache::self()->fetchData( d->m_cacheId, this, SLOT(slotRestoreData(const QByteArray &)));
//	emit started( 0L );
	slotChildStarted(0L);
	return true;
}


void MGHTMLPart::checkCompleted()
{
	int requests = 0;
	ConstFrameIt it = d->m_frames.begin();
	ConstFrameIt end = d->m_frames.end();
	for (; it != end; ++it )
		if ( !(*it).m_bCompleted )
			return;

//	requests = khtml::Cache::loader()->numRequests( m_url.url() );
  //kdDebug( 6060 ) << "number of loader requests: " << requests << endl;
//	if ( requests > 0 )
//		return;
	if ( d->m_bParsing || d->m_bComplete )
		return;
	d->m_bComplete = true;
//	if (!parentPart())
//		emit setStatusBarText(i18n("Done."));

//	if ( !d->m_redirectURL.isEmpty() )
//		d->m_redirectionTimer.start( 1000 * d->m_delayRedirect, true );

//	if ( !d->m_redirectURL.isEmpty() )
	{
		return; // We don't emit completed as long as we have a redirection pending.
		// We might want to add a message to the statusbar when we are not i18n-frozen.
	}
//	emit completed();
	updateActions();
}

void MGHTMLPart::slotChildStarted( KIO::Job *job )				//	!!!!! modify job
{
	khtml::ChildFrame *child = frame( sender() );
	assert( child );
	child->m_bCompleted = false;
	if ( d->m_bComplete )
	{
#if 0
	// WABA: Looks like this belongs somewhere else
		if ( !parentPart() ) 
		{
			emit d->m_extension->openURLNotify();				// !!!!! modify it
		}
#endif
		d->m_bComplete = false;
//		emit started( job );
		slotChildStarted(job);
	}
}

void MGHTMLPart::slotChildCompleted()
{
	khtml::ChildFrame *child = frame( sender() );
	assert( child );
	child->m_bCompleted = true;
	child->m_args = KParts::URLArgs();
	checkCompleted();
}

void MGHTMLPart::updateFontSize( int add )
{
	resetFontSizes();
	QValueList<int> sizes = fontSizes();
	QValueList<int>::Iterator it = sizes.begin();
	QValueList<int>::Iterator end = sizes.end();
	for (; it != end; ++it )
		(*it) += add;
	setFontSizes( sizes );
//	QApplication::setOverrideCursor( waitCursor );
	if(d->m_doc)
		d->m_doc->applyChanges();
//	QApplication::restoreOverrideCursor();
}


void MGHTMLPart::slotIncFontSizes()
{
	updateFontSize( ++d->m_fontBase );
	if ( !d->m_paDecFontSizes->isEnabled() )
		d->m_paDecFontSizes->setEnabled( true );
}

void MGHTMLPart::slotDecFontSizes()
{
	if ( d->m_fontBase >= 1 )
		updateFontSize( --d->m_fontBase );
	if ( d->m_fontBase == 0 )
		d->m_paDecFontSizes->setEnabled( false );
}


void MGHTMLPart::slotFinishedParsing()
{
	d->m_bParsing = false;
	d->m_doc->close();
//	disconnect(d->m_doc,SIGNAL(finishedParsing()),this,SLOT(slotFinishedParsing()));

	if (!d->m_view)
		return;

	d->m_view->restoreScrollBar();

	if ( !m_url.htmlRef().isEmpty() )
		gotoAnchor( m_url.htmlRef() );
	else if (d->m_view->contentsY()==0) // check that the view has not been moved by the use
	{
//		d->m_view->setContentsPos( d->m_extension->urlArgs().xOffset, d->m_extension->urlArgs().yOffset );
		d->m_view->setContentsPos(0, 0);
	}

	HTMLCollectionImpl imgColl( d->m_doc, HTMLCollectionImpl::DOC_IMAGES );
	d->m_totalImageCount = 0;
	KURL::List imageURLs;
	unsigned long i = 0;
	unsigned long len = imgColl.length();
	for (; i < len; i++ )
	{
		NodeImpl *node = imgColl.item( i );
		if ( node->id() != ID_IMG )
			continue;
		QString imgURL = static_cast<DOM::ElementImpl *>( node )->getAttribute( ATTR_SRC ).string();
		KURL url;
		if ( KURL::isRelativeURL( imgURL ) )
			url = completeURL( imgURL );
		else
			url = KURL( imgURL );
		if ( !imageURLs.contains( url ) )
		{
			d->m_totalImageCount++;
			imageURLs.append( url );
		}
	}
	checkCompleted();
}
void MGHTMLPart::slotLoaderRequestDone(const DOM::DOMString &baseURL, khtml::CachedObject *obj )
{
	if ( baseURL != m_url.url() )
		return;
	if (obj && obj->type() == khtml::CachedObject::Image && !d->m_bParsing )		// !!!!! user our method
	{
		d->m_loadedImages++;
//		if ( d->m_loadedImages <= d->m_totalImageCount )
//		emit d->m_extension->infoMessage(i18n( "%1 of %2 Images loaded").arg(d->m_loadedImages).arg(d->m_totalImageCount));
	}
	checkCompleted();
}



//--------------------- modified completely ----------------------------------------
*/




//----------------------ignore these functions now ---------------------------------
/*
void MGHTMLPart::slotSetEncoding()
{
	if(d->m_paSetEncoding->currentItem() == 0)
		setEncoding(QString::null, false);
	else
		setEncoding(d->m_paSetEncoding->currentText(), true);
}

bool MGHTMLPart::setEncoding( const QString &name, bool override )
{
	d->m_encoding = name;
	d->m_haveEncoding = override;
	if(!d->m_settings->charset() == QFont::Unicode)
		d->m_settings->setCharset( KGlobal::charsets()->charsetForEncoding(name) );
	if( !m_url.isEmpty() ) {
		closeURL();
		KURL url = m_url;
		m_url = 0;
		openURL(url);
	}
	return true;
}
KJSProxy *MGHTMLPart::jScript()
{
	if ( d->m_bJScriptOverride && !d->m_bJScriptForce || !d->m_bJScriptOverride && !d->m_bJScriptEnabled)
		return 0;
	if ( !d->m_jscript )
	{
		KLibrary *lib = KLibLoader::self()->library("kjs_html");
		if ( !lib )
			return 0;
		void *sym = lib->symbol("kjs_html_init");
		if ( !sym ) 
		{
			delete lib;
			return 0;
		}
		typedef KJSProxy* (*initFunction)(KHTMLPart *);
		initFunction initSym = (initFunction) sym;
		d->m_jscript = (*initSym)(this);
		d->m_kjs_lib = lib;
		kjs_lib_count++;
	}
	return d->m_jscript;
}


KJavaAppletContext *MGHTMLPart::javaContext()
{
	return d->m_javaContext;
}

KJavaAppletContext *MGHTMLPart::createJavaContext()
{
	if ( !d->m_javaContext ) 
	{
		d->m_javaContext = new KJavaAppletContext();
		connect( d->m_javaContext, SIGNAL(showStatus(const QString&)),
				this, SIGNAL(setStatusBarText(const QString&)) );
		connect( d->m_javaContext, SIGNAL(showDocument(const QString&, const QString&)),
				this, SLOT(slotShowDocument(const QString&, const QString&)) );
	}
	return d->m_javaContext;
}

KParts::BrowserExtension *MGHTMLPart::browserExtension() const
{
	return d->m_extension;
}

void MGHTMLPart::popupMenu( const QString &url )
{
	KURL u( m_url );
	if ( !url.isEmpty() )
		u = KURL( m_url, url );
	mode_t mode = S_IFDIR; 
	KXMLGUIClient *client = new KHTMLPopupGUIClient( this, d->m_popupMenuXML, url.isEmpty() ? KURL() : u );
	emit d->m_extension->popupMenu( client, QCursor::pos(), u, QString::fromLatin1( "text/html" ), mode );
	delete client;
	emit popupMenu(url, QCursor::pos());
}

void MGHTMLPart::slotFind()
{
	KHTMLPart *part = this;
	f ( d->m_frames.count() > 0 )
		part = static_cast<KHTMLPart *>( partManager()->activePart() );
	assert( part->inherits( "KHTMLPart" ) );
	assert( d->m_findDialog == 0 );
	KHTMLFind *findDlg = new KHTMLFind( part, part->widget(), "khtmlfind" );
	findDlg->setText( part->d->m_lastFindState.text );
	findDlg->setCaseSensitive( part->d->m_lastFindState.caseSensitive );
	findDlg->setDirection( part->d->m_lastFindState.direction );
	findDlg->show();
	connect( findDlg, SIGNAL( done() ), this, SLOT( slotFindDone() ) );
	connect( findDlg, SIGNAL( destroyed() ), this, SLOT( slotFindDialogDestroyed() ) );
	d->m_findDialog = findDlg;
	d->m_paFind->setEnabled( false );
}

void MGHTMLPart::slotFindDone()
{
	assert( d->m_findDialog );
	KHTMLPart *part = d->m_findDialog->part();
	part->d->m_lastFindState.text = d->m_findDialog->getText();
	part->d->m_lastFindState.caseSensitive = d->m_findDialog->case_sensitive();
	part->d->m_lastFindState.direction = d->m_findDialog->get_direction();
	delete d->m_findDialog;
}

void MGHTMLPart::slotFindDialogDestroyed()
{
    assert( sender() == d->m_findDialog );

    d->m_findDialog = 0;
    d->m_paFind->setEnabled( true );
}

void MGHTMLPart::selectAll()
{
	NodeImpl *first = d->m_doc->body();
	NodeImpl *next;
	while ( first && first->id() != ID_TEXT )
	{
		next = first->firstChild();
		if ( !next ) 
			next = first->nextSibling();
		while( first && !next )
		{
			first = first->parentNode();
			if ( first )
			next = first->nextSibling();
		}
		first = next;
	}
	NodeImpl *last = d->m_doc->body();
	while ( last && last->id() != ID_TEXT )
	{
		next = last->lastChild();
		if ( !next ) 
			next = last->previousSibling();
		while ( last && !next )
		{
			last = last->parentNode();
			if ( last )
				next = last->previousSibling();
		}
		last = next;
	}
	if ( !first || !last )
		return;
	d->m_selectionStart = first;
	d->m_startOffset = 0;
	d->m_selectionEnd = last;
	d->m_endOffset = static_cast<TextImpl *>( last )->string()->l;
	d->m_startBeforeEnd = true;
	d->m_doc->setSelection( d->m_selectionStart.handle(), d->m_startOffset,
							d->m_selectionEnd.handle(), d->m_endOffset );
	 emitSelectionChanged();
}

void MGHTMLPart::slotSelectAll()
{
	KHTMLPart *part = this;
	if ( d->m_frames.count() > 0 )
		part = static_cast<KHTMLPart *>( partManager()->activePart() );
	assert( part );
	part->selectAll();
}

void MGHTMLPart::findTextBegin()
{
	d->m_findPos = -1;
	d->m_findNode = 0;
}

bool MGHTMLPart::findTextNext( const QRegExp &exp, bool forward )
{
	if(!d->m_findNode) d->m_findNode = d->m_doc->body();
	if ( !d->m_findNode || d->m_findNode->id() == ID_FRAMESET )
		return false;
	while(1)
	{
		if(d->m_findNode->id() == ID_TEXT && d->m_findNode->renderer() )
		{
			DOMStringImpl *t = (static_cast<TextImpl *>(d->m_findNode))->string();
			QConstString s(t->s, t->l);
			d->m_findPos = s.string().find(exp, d->m_findPos+1);
			if(d->m_findPos != -1)
			{
				int x = 0, y = 0;
				khtml::RenderText *text = static_cast<khtml::RenderText *>(d->m_findNode->renderer());
				text->posOfChar(d->m_findPos, x, y);
				d->m_view->setContentsPos(x-50, y-50);
				return true;
			}
		}
		d->m_findPos = -1;
		NodeImpl *next;
		if ( forward )
		{
			next = d->m_findNode->firstChild();
			if(!next)
				next = d->m_findNode->nextSibling();
			while(d->m_findNode && !next) 
			{
				d->m_findNode = d->m_findNode->parentNode();
				if( d->m_findNode ) 
				{
					next = d->m_findNode->nextSibling();
				}
			}
		}
		else
		{
			next = d->m_findNode->lastChild();
			if (!next )
				next = d->m_findNode->previousSibling();
			while ( d->m_findNode && !next )
			{
				d->m_findNode = d->m_findNode->parentNode();
				if( d->m_findNode )
				{
					next = d->m_findNode->previousSibling();
				}
			}
		}
		d->m_findNode = next;
		if(!d->m_findNode) return false;
	}
}

bool MGHTMLPart::findTextNext( const QString &str, bool forward, bool caseSensitive )
{
	if(!d->m_findNode) 
		d->m_findNode = d->m_doc->body();
	if ( !d->m_findNode || d->m_findNode->id() == ID_FRAMESET )
		return false;
	while(1)
	{
		if(d->m_findNode->id() == ID_TEXT && d->m_findNode->renderer() )
		{
			DOMStringImpl *t = (static_cast<TextImpl *>(d->m_findNode))->string();
			QConstString s(t->s, t->l);
			d->m_findPos = s.string().find(str, d->m_findPos+1, caseSensitive);
			if(d->m_findPos != -1)
			{
				int x = 0, y = 0;
				static_cast<khtml::RenderText *>(d->m_findNode->renderer())->posOfChar(d->m_findPos, x, y);
				d->m_view->setContentsPos(x-50, y-50);
				d->m_selectionStart = d->m_findNode;
				d->m_startOffset = d->m_findPos;
				d->m_selectionEnd = d->m_findNode;
				d->m_endOffset = d->m_findPos + str.length();
				d->m_startBeforeEnd = true;
				d->m_doc->setSelection( d->m_selectionStart.handle(), d->m_startOffset,
										d->m_selectionEnd.handle(), d->m_endOffset );
				emitSelectionChanged();
				return true;
			}
		}
		d->m_findPos = -1;
		NodeImpl *next;
		if ( forward )
		{
			next = d->m_findNode->firstChild();
			if(!next) 
				next = d->m_findNode->nextSibling();
			while(d->m_findNode && !next) 
			{
				d->m_findNode = d->m_findNode->parentNode();
				if( d->m_findNode ) 
				{
					next = d->m_findNode->nextSibling();
				}
			}
		}
		else
		{
			next = d->m_findNode->lastChild();
			if (!next ) next = d->m_findNode->previousSibling();
			while ( d->m_findNode && !next )
			{
				d->m_findNode = d->m_findNode->parentNode();
				if( d->m_findNode )
				{
					next = d->m_findNode->previousSibling();
				}
			}
		}
		d->m_findNode = next;
		if(!d->m_findNode) return false;
	}
}

QString MGHTMLPart::selectedText() const
{
	QString text;
	DOM::Node n = d->m_selectionStart;
	while(!n.isNull()) 
	{
		if(n.nodeType() == DOM::Node::TEXT_NODE) 
		{
			QString str = static_cast<TextImpl *>(n.handle())->data().string();
			if(n == d->m_selectionStart && n == d->m_selectionEnd)
				text = str.mid(d->m_startOffset, d->m_endOffset - d->m_startOffset);
			else if(n == d->m_selectionStart)
				text = str.mid(d->m_startOffset);
			else if(n == d->m_selectionEnd)
				text += str.left(d->m_endOffset);
			else
				text += str;
		}
		else if(n.elementId() == ID_BR)
			text += "\n";
		else if(n.elementId() == ID_P || n.elementId() == ID_TD)
			text += "\n\n";
		if(n == d->m_selectionEnd) 
			break;
		DOM::Node next = n.firstChild();
		if(next.isNull()) 
			next = n.nextSibling();
		while( next.isNull() && !n.parentNode().isNull() )