353 lines
10 KiB
C++
353 lines
10 KiB
C++
/*
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* Copyright 2009 Aaron Seigo <aseigo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "javascriptdataengine.h"
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#include <QScriptEngine>
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#include <Plasma/Package>
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#include "javascriptservice.h"
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#include "common/authorization.h"
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#include "common/scriptenv.h"
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#include "simplebindings/i18n.h"
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#include "simplebindings/dataengine.h"
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void registerNonGuiMetaTypes(QScriptEngine *engine);
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JavaScriptDataEngine::JavaScriptDataEngine(QObject *parent, const QVariantList &args)
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: DataEngineScript(parent)
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{
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Q_UNUSED(args);
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m_qscriptEngine = new QScriptEngine(this);
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m_env = new ScriptEnv(this, m_qscriptEngine);
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connect(m_env, SIGNAL(reportError(ScriptEnv*,bool)), this, SLOT(reportError(ScriptEnv*,bool)));
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}
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bool JavaScriptDataEngine::init()
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{
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QScriptValue global = m_qscriptEngine->globalObject();
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bindI18N(m_qscriptEngine);
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m_iface = m_qscriptEngine->newQObject(this);
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m_iface.setScope(global);
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m_env->addMainObjectProperties(m_iface);
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global.setProperty("engine", m_iface);
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global.setProperty("setData", m_qscriptEngine->newFunction(JavaScriptDataEngine::jsSetData));
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global.setProperty("removeAllData", m_qscriptEngine->newFunction(JavaScriptDataEngine::jsRemoveAllData));
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global.setProperty("removeData", m_qscriptEngine->newFunction(JavaScriptDataEngine::jsRemoveData));
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global.setProperty("removeAllSources", m_qscriptEngine->newFunction(JavaScriptDataEngine::jsRemoveAllSources));
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global.setProperty("Service", m_qscriptEngine->newFunction(JavaScriptDataEngine::serviceCtor));
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registerNonGuiMetaTypes(m_qscriptEngine);
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Authorization auth;
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if (!m_env->importExtensions(description(), m_iface, auth)) {
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return false;
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}
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return m_env->include(mainScript());
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}
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QScriptEngine *JavaScriptDataEngine::engine() const
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{
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return m_qscriptEngine;
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}
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void JavaScriptDataEngine::jsSetMaxSourceCount(int count)
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{
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setMaxSourceCount(count);
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}
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int JavaScriptDataEngine::maxSourceCount() const
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{
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return dataEngine()->maxSourceCount();
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}
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void JavaScriptDataEngine::jsSetMinimumPollingInterval(int interval)
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{
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setMinimumPollingInterval(interval);
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}
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int JavaScriptDataEngine::jsMinimumPollingInterval() const
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{
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return minimumPollingInterval();
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}
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void JavaScriptDataEngine::jsSetPollingInterval(int interval)
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{
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m_pollingInterval = interval;
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setPollingInterval(interval);
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}
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int JavaScriptDataEngine::pollingInterval() const
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{
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return m_pollingInterval;
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}
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QScriptValue JavaScriptDataEngine::jsSetData(QScriptContext *context, QScriptEngine *engine)
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{
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if (context->argumentCount() < 1) {
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return context->throwError(i18n("setData() takes at least one argument"));
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}
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QString error;
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JavaScriptDataEngine *iFace = extractIFace(engine, error);
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if (!iFace) {
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return context->throwError(error);
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}
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const QString source = context->argument(0).toString();
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if (context->argumentCount() == 1) {
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iFace->setData(source, DataEngine::Data());
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} else if (context->argument(1).isArray() || context->argument(1).isObject()) {
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kDebug( )<< "array or object";
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QScriptValueIterator it(context->argument(1));
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DataEngine::Data data;
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while (it.hasNext()) {
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it.next();
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data.insert(it.name(), it.value().toVariant());
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}
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iFace->setData(source, data);
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} else {
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const QString value = context->argument(1).toString();
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if (context->argumentCount() > 2) {
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if (context->argument(2).isArray() || context->argument(2).isObject()) {
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QScriptValueIterator it(context->argument(2));
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DataEngine::Data data;
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while (it.hasNext()) {
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it.next();
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data.insert(it.name(), it.value().toVariant());
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}
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iFace->setData(source, value, data);
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} else {
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iFace->setData(source, value, context->argument(2).toString());
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}
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} else {
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iFace->setData(source, value);
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}
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}
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return engine->newVariant(true);
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}
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JavaScriptDataEngine *JavaScriptDataEngine::extractIFace(QScriptEngine *engine, QString &error)
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{
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JavaScriptDataEngine *interface = 0;
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QScriptValue engineValue = engine->globalObject().property("engine");
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QObject *engineObject = engineValue.toQObject();
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if (!engineObject) {
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error = i18n("Could not extract the DataEngineObject");
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} else {
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interface = qobject_cast<JavaScriptDataEngine *>(engineObject);
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if (!interface) {
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error = i18n("Could not extract the DataEngine");
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}
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}
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return interface;
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}
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QScriptValue JavaScriptDataEngine::jsRemoveAllData(QScriptContext *context, QScriptEngine *engine)
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{
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if (context->argumentCount() < 1) {
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return context->throwError(i18n("removeAllData() takes at least one argument (the source name)"));
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}
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QString source = context->argument(0).toString();
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QString error;
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JavaScriptDataEngine *iFace = extractIFace(engine, error);
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if (iFace) {
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iFace->removeAllData(source);
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return engine->newVariant(true);
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}
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return context->throwError(error);
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}
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QScriptValue JavaScriptDataEngine::jsRemoveData(QScriptContext *context, QScriptEngine *engine)
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{
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if (context->argumentCount() < 2) {
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return context->throwError(i18n("removeData() takes at least two arguments (the source and key names)"));
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}
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QString source = context->argument(0).toString();
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QString key = context->argument(1).toString();
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QString error;
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JavaScriptDataEngine *iFace = extractIFace(engine, error);
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if (iFace) {
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iFace->removeData(source, key);
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return engine->newVariant(true);
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}
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return context->throwError(error);
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}
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QScriptValue JavaScriptDataEngine::jsRemoveAllSources(QScriptContext *context, QScriptEngine *engine)
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{
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QString error;
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JavaScriptDataEngine *iFace = extractIFace(engine, error);
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if (iFace) {
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iFace->removeAllSources();
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return engine->newVariant(true);
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}
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return context->throwError(error);
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}
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QScriptValue JavaScriptDataEngine::serviceCtor(QScriptContext *context, QScriptEngine *engine)
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{
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QString error;
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JavaScriptDataEngine *iFace = extractIFace(engine, error);
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if (!iFace) {
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return context->throwError(error);
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}
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if (context->argumentCount() < 1) {
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return context->throwError(i18n("Service requires at least one parameter: the name of the service"));
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}
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const QString &serviceName = context->argument(0).toString();
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if (serviceName.isEmpty()) {
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return context->throwError(i18n("Service requires at least one parameter: the name of the service"));
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}
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JavaScriptService *service = new JavaScriptService(serviceName, iFace);
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if (service->wasFound()) {
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QScriptValue v = engine->newQObject(service, QScriptEngine::QtOwnership, QScriptEngine::ExcludeSuperClassContents);
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return v;
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}
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delete service;
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return context->throwError(i18n("Requested service %1 was not found in the Package.", serviceName));
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}
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QScriptValue JavaScriptDataEngine::callFunction(const QString &functionName, const QScriptValueList &args)
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{
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QScriptValue func = m_iface.property(functionName);
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return m_env->callFunction(func, args, m_iface);
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}
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void JavaScriptDataEngine::reportError(ScriptEnv *env, bool fatal) const
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{
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Q_UNUSED(fatal)
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kDebug() << "Error: " << env->engine()->uncaughtException().toString()
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<< " at line " << env->engine()->uncaughtExceptionLineNumber() << endl;
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kDebug() << env->engine()->uncaughtExceptionBacktrace();
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}
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QStringList JavaScriptDataEngine::sources() const
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{
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JavaScriptDataEngine *unconst = const_cast<JavaScriptDataEngine *>(this);
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QScriptValueList args;
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QScriptValue rv = unconst->callFunction("sources", args);
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if (rv.isValid() && (rv.isVariant() || rv.isArray())) {
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return rv.toVariant().toStringList();
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}
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return DataEngineScript::sources();
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}
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bool JavaScriptDataEngine::sourceRequestEvent(const QString &name)
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{
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QScriptValueList args;
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args << name;
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m_env->callEventListeners("sourceRequestEvent", args);
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QScriptValue rv = callFunction("sourceRequestEvent", args);
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if (rv.isValid() && rv.isBool()) {
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return rv.toBool();
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}
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return false;
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}
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bool JavaScriptDataEngine::updateSourceEvent(const QString &source)
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{
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QScriptValueList args;
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args << source;
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m_env->callEventListeners("updateSourcEvent", args);
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QScriptValue rv = callFunction("updateSourceEvent", args);
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if (rv.isValid() && rv.isBool()) {
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return rv.toBool();
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}
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return false;
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}
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Plasma::Service *JavaScriptDataEngine::serviceForSource(const QString &source)
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{
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QScriptValueList args;
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args << source;
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QScriptValue rv = callFunction("serviceForSource", args);
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if (rv.isValid() && rv.isQObject()) {
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Plasma::Service *service = qobject_cast<Plasma::Service *>(rv.toQObject());
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if (service) {
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if (service->destination().isEmpty()) {
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service->setDestination(source);
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}
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return service;
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} else {
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delete rv.toQObject();
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}
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}
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return 0;
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}
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QString JavaScriptDataEngine::filePath(const char *type, const QString &file) const
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{
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const QString path = m_env->filePathFromScriptContext(type, file);
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if (!path.isEmpty()) {
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return path;
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}
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return package()->filePath(type, file);
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}
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bool JavaScriptDataEngine::include(const QString &script)
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{
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const QString path = filePath("scripts", script);
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if (path.isEmpty()) {
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return false;
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}
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return m_env->include(path);
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}
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K_EXPORT_PLASMA_DATAENGINESCRIPTENGINE(javascriptdataengine, JavaScriptDataEngine)
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#include <javascriptdataengine.moc>
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