/retroshare-gui/src/gui/common/RSTextBrowser.cpp

#include <QDesktopServices>

#include <QPainter>



#include "RSTextBrowser.h"

#include "RSImageBlockWidget.h"



RSTextBrowser::RSTextBrowser(QWidget *parent) :

	QTextBrowser(parent)

{

	setOpenExternalLinks(true);

	setOpenLinks(false);



	mShowImages = true;

	mImageBlockWidget = NULL;

	mLinkClickActive = true;



	connect(this, SIGNAL(anchorClicked(QUrl)), this, SLOT(linkClicked(QUrl)));

}



void RSTextBrowser::linkClicked(const QUrl &url)

{

	if (!mLinkClickActive) {

		return;

	}



	// some links are opened directly in the QTextBrowser with open external links set to true,

	// so we handle links by our own



#ifdef TO_DO

	// If we want extra file links to be anonymous, we need to insert the actual source here.

	if(url.host() == HOST_EXTRAFILE)

	{

		std::cerr << "Extra file link detected. Adding parent id " << _target_sslid << " to sourcelist" << std::endl;



		RetroShareLink link ;

		link.fromUrl(url) ;



		link.createExtraFile( link.name(),link.size(),link.hash(), _target_ssl_id) ;



		QDesktopServices::openUrl(link.toUrl());

	}

	else

#endif

		QDesktopServices::openUrl(url);

}



void RSTextBrowser::setPlaceholderText(const QString &text)

{

	mPlaceholderText = text;

	viewport()->repaint();

}



void RSTextBrowser::paintEvent(QPaintEvent *event)

{

	QTextBrowser::paintEvent(event);



	if (mPlaceholderText.isEmpty() == false && document()->isEmpty()) {

		QWidget *vieportWidget = viewport();

		QPainter painter(vieportWidget);



		QPen pen = painter.pen();

		QColor color = pen.color();

		color.setAlpha(128);

		pen.setColor(color);

		painter.setPen(pen);



		painter.drawText(QRect(QPoint(), vieportWidget->size()), Qt::AlignHCenter | Qt::AlignVCenter | Qt::TextWordWrap, mPlaceholderText);

	}

}



QVariant RSTextBrowser::loadResource(int type, const QUrl &name)

{

	if (mShowImages || type != QTextDocument::ImageResource || name.scheme().compare("data", Qt::CaseInsensitive) != 0) {

		return QTextBrowser::loadResource(type, name);

	}



	if (mImageBlockWidget) {

		mImageBlockWidget->show();

	}



	return QPixmap(":/trolltech/styles/commonstyle/images/file-16.png");

}



void RSTextBrowser::setImageBlockWidget(RSImageBlockWidget *widget)

{

	if (mImageBlockWidget) {

		// disconnect

		disconnect(mImageBlockWidget, SIGNAL(destroyed()), this, SLOT(destroyImageBlockWidget()));

		disconnect(mImageBlockWidget, SIGNAL(showImages()), this, SLOT(showImages()));

	}



	mImageBlockWidget = widget;



	if (mImageBlockWidget) {

		// connect

		connect(mImageBlockWidget, SIGNAL(destroyed()), this, SLOT(destroyImageBlockWidget()));

		connect(mImageBlockWidget, SIGNAL(showImages()), this, SLOT(showImages()));

	}



	resetImagesStatus(false);

}



void RSTextBrowser::destroyImageBlockWidget()

{

	mImageBlockWidget = NULL;

}



void RSTextBrowser::showImages()

{

	if (mImageBlockWidget && sender() == mImageBlockWidget) {

		mImageBlockWidget->hide();

	}



	if (mShowImages) {

		return;

	}



	mShowImages = true;



	QString html = toHtml();

	clear();

	setHtml(html);

}



void RSTextBrowser::resetImagesStatus(bool load)

{

	if (mImageBlockWidget) {

		mImageBlockWidget->hide();

	}

	mShowImages = load;

}



void RSTextBrowser::activateLinkClick(bool active)

{

	mLinkClickActive = active;

}