path: root/src/fbgui/javascriptinterface.cpp

#include "fbgui.h"
#include "ndgui.h"
#include "javascriptinterface.h"
#include "sysinfo.h"

#include <log4cxx/logger.h>
#include "qlog4cxx.h"

using namespace log4cxx;
using namespace log4cxx::helpers;
LoggerPtr jsiLogger(Logger::getLogger("fbgui.jsi"));

//-------------------------------------------------------------------------------------------------------
//                                         Initialisation
//-------------------------------------------------------------------------------------------------------
/**
 * A constructor.
 *
 * @param parent
 *   Is of type QWebFrame.
 */
JavascriptInterface::JavascriptInterface(QWebFrame *parent) {
	LOG4CXX_DEBUG(jsiLogger, "Initializing javascript interface...");
	_targetFrame = parent;
}
//-------------------------------------------------------------------------------------------------------
/**
 * An empty destructor.
 */
JavascriptInterface::~JavascriptInterface() { /* destructor dummy */
}
//-------------------------------------------------------------------------------------------------------
/**
 * Attaches an instance of this class to the DOM of the HTML page.
 *
 * Attaches an instance of this class to the DOM of the HTML page.
 * This enables the possibility to call slots/methods of this class in
 * JavaScript functions of HTML page. It also calls the
 * JavascriptInterface::loadJQuery() method.
 *
 * @see JavascriptInterface::loadJQuery()
 */
void JavascriptInterface::attachToDOM() {
	_targetFrame->addToJavaScriptWindowObject(QString("fbgui"), this);
	loadJQuery();
}
//-------------------------------------------------------------------------------------------------------
/**
 * This method load the required jQuery libraries into the HTML page.
 *
 * This method load the required jQuery libraries into the HTML page.
 * The libraries are contained in the fbgui.qrc file.
 * The Path to the files is: ":/html/js".
 * Each library will be read and loaded into the HTML page via
 * the evaluateJavaScript() method.
 *
 * @see JavascriptInterface::attachToDOM()
 */
void JavascriptInterface::loadJQuery() {
	// to test if this actually works...
	QString js;
	QString pathToJsDir(DEFAULT_QRC_HTML_DIR);
	pathToJsDir.append("/js");

	QDir qrcJSDir(pathToJsDir);
	QFileInfoList fiList = qrcJSDir.entryInfoList();
	QFileInfo fi;

	foreach(fi, fiList) {
		if (fi.suffix() == "js") {
			QFile file;
			file.setFileName(pathToJsDir + "/" + fi.fileName());
			file.open(QIODevice::ReadOnly);
			js = file.readAll();
			file.close();

			_targetFrame->evaluateJavaScript(js);
			//LOG4CXX_DEBUG(jsiLogger, "evaluated " + fi.fileName());
		}
	}
}

//-------------------------------------------------------------------------------------------------------
/**
 * This method quits the whole program.
 *
 * This method quits the whole program.
 * Can be called from inside a JavaScript function of the HTML page.
 * Emits JavascriptInterface::quitFbgui() signal
 */
void JavascriptInterface::quit() {
	emit quitFbgui();
}

//-------------------------------------------------------------------------------------------------------
/**
 * This method performs a shutdown of the client.
 *
 * This method performs a shutdown of the client.
 * Emits the JavascriptInterface::shutDownClient() signal.It is
 * connected with the fbgui::performShutDown() method.
 *
 * @see fbgui::performShutDown()
 */
void JavascriptInterface::shutDown() {
	emit shutDownClient();
}
//-------------------------------------------------------------------------------------------------------
/**
 * This method performs a reboot of the client.
 *
 * This method performs a reboot of the client.
 * Emits the JavascriptInterface::rebootClient() signal. It is
 * connected with the fbgui::performReboot() method.
 *
 * @see fbgui::performReboot()
 */
void JavascriptInterface::reboot() {
	emit rebootClient();
}

//-------------------------------------------------------------------------------------------------------
/**
 * This method sends out messages to Javascript. A corresponding function must be implemented
 * on the webpage to receive these.
 */
void JavascriptInterface::notify(const QString& msg) {
LOG4CXX_DEBUG(jsiLogger, "Notifying: " << msg);
QString code = QString("notify('\%1')").arg(msg);
_targetFrame->evaluateJavaScript(code);
}