plasma-framework/scriptengines/javascript/simplejavascriptapplet.cpp
Aaron J. Seigo e0e01efa94 qtscript->javascript
svn path=/trunk/KDE/kdebase/workspace/plasma/scriptengines/javascript/; revision=905822
2009-01-05 08:08:38 +00:00

589 lines
18 KiB
C++

/*
* Copyright 2007-2008 Richard J. Moore <rich@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "simplejavascriptapplet.h"
#include <QScriptEngine>
#include <QFile>
#include <QUiLoader>
#include <QGraphicsLayout>
#include <QWidget>
#include <KDebug>
#include <KLocale>
#include <KStandardDirs>
#include <Plasma/Applet>
#include <Plasma/Svg>
#include <Plasma/FrameSvg>
#include <Plasma/Package>
#include <Plasma/UiLoader>
#include "appletinterface.h"
using namespace Plasma;
#include "bind_dataengine.h"
Q_DECLARE_METATYPE(QPainter*)
Q_DECLARE_METATYPE(QStyleOptionGraphicsItem*)
Q_DECLARE_METATYPE(SimpleJavaScriptApplet*)
Q_DECLARE_METATYPE(AppletInterface*)
Q_DECLARE_METATYPE(Applet*)
Q_DECLARE_METATYPE(QGraphicsWidget*)
Q_DECLARE_METATYPE(QGraphicsLayout*)
Q_SCRIPT_DECLARE_QMETAOBJECT(AppletInterface, SimpleJavaScriptApplet*)
QScriptValue constructPainterClass(QScriptEngine *engine);
QScriptValue constructGraphicsItemClass(QScriptEngine *engine);
QScriptValue constructTimerClass(QScriptEngine *engine);
QScriptValue constructFontClass(QScriptEngine *engine);
QScriptValue constructQRectFClass(QScriptEngine *engine);
QScriptValue constructQPointClass(QScriptEngine *engine);
QScriptValue constructQSizeFClass(QScriptEngine *engine);
/*
* Workaround the fact that QtScripts handling of variants seems a bit broken.
*/
QScriptValue variant2ScriptValue(QScriptEngine *engine, QVariant var)
{
if (var.isNull()) {
return engine->nullValue();
}
switch(var.type())
{
case QVariant::Invalid:
return engine->nullValue();
case QVariant::Bool:
return QScriptValue(engine, var.toBool());
case QVariant::Date:
return engine->newDate(var.toDateTime());
case QVariant::DateTime:
return engine->newDate(var.toDateTime());
case QVariant::Double:
return QScriptValue(engine, var.toDouble());
case QVariant::Int:
case QVariant::LongLong:
return QScriptValue(engine, var.toInt());
case QVariant::String:
return QScriptValue(engine, var.toString());
case QVariant::Time:
return engine->newDate(var.toDateTime());
case QVariant::UInt:
return QScriptValue(engine, var.toUInt());
default:
break;
}
return qScriptValueFromValue(engine, var);
}
QScriptValue qScriptValueFromData(QScriptEngine *engine, const DataEngine::Data &data)
{
DataEngine::Data::const_iterator begin = data.begin();
DataEngine::Data::const_iterator end = data.end();
DataEngine::Data::const_iterator it;
QScriptValue obj = engine->newObject();
for (it = begin; it != end; ++it) {
obj.setProperty(it.key(), variant2ScriptValue(engine, it.value()));
}
return obj;
}
SimpleJavaScriptApplet::SimpleJavaScriptApplet(QObject *parent, const QVariantList &args)
: Plasma::AppletScript(parent)
{
kDebug() << "Script applet launched, args" << args;
m_engine = new QScriptEngine(this);
importExtensions();
}
SimpleJavaScriptApplet::~SimpleJavaScriptApplet()
{
}
void SimpleJavaScriptApplet::reportError()
{
kDebug() << "Error: " << m_engine->uncaughtException().toString()
<< " at line " << m_engine->uncaughtExceptionLineNumber() << endl;
kDebug() << m_engine->uncaughtExceptionBacktrace();
}
void SimpleJavaScriptApplet::showConfigurationInterface()
{
kDebug() << "Script: showConfigurationInterface";
// Here we'll load a ui file...
QScriptValue global = m_engine->globalObject();
QScriptValue fun = m_self.property("showConfigurationInterface");
if (!fun.isFunction()) {
kDebug() << "Script: ShowConfiguratioInterface is not a function, " << fun.toString();
return;
}
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}
void SimpleJavaScriptApplet::configAccepted()
{
QScriptValue fun = m_self.property("configAccepted");
if (!fun.isFunction()) {
kDebug() << "Script: configAccepted is not a function, " << fun.toString();
return;
}
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}
void SimpleJavaScriptApplet::dataUpdated(const QString &name, const DataEngine::Data &data)
{
QScriptValue fun = m_self.property("dataUpdated");
if (!fun.isFunction()) {
kDebug() << "Script: dataUpdated is not a function, " << fun.toString();
return;
}
QScriptValueList args;
args << m_engine->toScriptValue(name) << m_engine->toScriptValue(data);
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self, args);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}
void SimpleJavaScriptApplet::executeAction(const QString &name)
{
callFunction("action_" + name);
/*
QScriptValue fun = m_self.property("action_" + name);
if (fun.isFunction()) {
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}*/
}
void SimpleJavaScriptApplet::paintInterface(QPainter *p, const QStyleOptionGraphicsItem *option, const QRect &contentsRect)
{
Q_UNUSED(option)
Q_UNUSED(contentsRect)
//kDebug() << "paintInterface() (c++)";
QScriptValue fun = m_self.property("paintInterface");
if (!fun.isFunction()) {
kDebug() << "Script: paintInterface is not a function, " << fun.toString();
AppletScript::paintInterface(p, option, contentsRect);
return;
}
QScriptValueList args;
args << m_engine->toScriptValue(p);
args << m_engine->toScriptValue(const_cast<QStyleOptionGraphicsItem*>(option));
args << m_engine->toScriptValue(contentsRect);
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self, args);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}
QList<QAction*> SimpleJavaScriptApplet::contextualActions()
{
return m_interface->contextualActions();
}
void SimpleJavaScriptApplet::callFunction(const QString &functionName, const QScriptValueList &args)
{
QScriptValue fun = m_self.property(functionName);
if (fun.isFunction()) {
QScriptContext *ctx = m_engine->pushContext();
ctx->setActivationObject(m_self);
fun.call(m_self, args);
m_engine->popContext();
if (m_engine->hasUncaughtException()) {
reportError();
}
}
}
void SimpleJavaScriptApplet::constraintsEvent(Plasma::Constraints constraints)
{
QString functionName;
if (constraints & Plasma::FormFactorConstraint) {
callFunction("formFactorChanged");
}
if (constraints & Plasma::LocationConstraint) {
callFunction("locationChanged");
}
if (constraints & Plasma::ContextConstraint) {
callFunction("contextChanged");
}
}
bool SimpleJavaScriptApplet::init()
{
setupObjects();
kDebug() << "ScriptName:" << applet()->name();
kDebug() << "ScriptCategory:" << applet()->category();
applet()->resize(200, 200);
QFile file(mainScript());
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
kWarning() << "Unable to load script file";
return false;
}
QString script = file.readAll();
kDebug() << "Script says" << script;
m_engine->evaluate(script);
if (m_engine->hasUncaughtException()) {
reportError();
return false;
}
return true;
}
void SimpleJavaScriptApplet::importExtensions()
{
return; // no extension, so do bother wasting cycles
QStringList extensions;
//extensions << "qt.core" << "qt.gui" << "qt.svg" << "qt.xml" << "qt.plasma";
//extensions << "qt.core" << "qt.gui" << "qt.xml";
foreach (const QString &ext, extensions) {
kDebug() << "importing " << ext << "...";
QScriptValue ret = m_engine->importExtension(ext);
if (ret.isError()) {
kDebug() << "failed to import extension" << ext << ":" << ret.toString();
}
}
kDebug() << "done importing extensions.";
}
void SimpleJavaScriptApplet::setupObjects()
{
QScriptValue global = m_engine->globalObject();
// Expose applet interface
m_interface = new AppletInterface(this);
m_self = m_engine->newQObject(m_interface);
m_self.setScope(global);
global.setProperty("plasmoid", m_self);
//manually create enum values. ugh
QMetaObject meta = AppletInterface::staticMetaObject;
for (int i=0; i < meta.enumeratorCount(); ++i) {
QMetaEnum e = meta.enumerator(i);
kDebug() << e.name();
for (int i=0; i < e.keyCount(); ++i) {
kDebug() << e.key(i) << e.value(i);
global.setProperty(e.key(i), QScriptValue(m_engine, e.value(i)));
}
}
// global.setProperty("Planar", QScriptValue(m_engine, Plasma::Planar));
// m_metaObject = m_engine->newQMetaObject(&AppletInterface::staticMetaObject);
// m_metaObject.setScope(global);
// global.setProperty("meta", m_metaObject);
// Add a global loadui method for ui files
QScriptValue fun = m_engine->newFunction(SimpleJavaScriptApplet::loadui);
global.setProperty("loadui", fun);
fun = m_engine->newFunction(SimpleJavaScriptApplet::print);
global.setProperty("print", fun);
// Work around bug in 4.3.0
qMetaTypeId<QVariant>();
// Add constructors
global.setProperty("PlasmaSvg", m_engine->newFunction(SimpleJavaScriptApplet::newPlasmaSvg));
global.setProperty("PlasmaFrameSvg", m_engine->newFunction(SimpleJavaScriptApplet::newPlasmaFrameSvg));
// Add stuff from 4.4
global.setProperty("QPainter", constructPainterClass(m_engine));
global.setProperty("QGraphicsItem", constructGraphicsItemClass(m_engine));
global.setProperty("QTimer", constructTimerClass(m_engine));
global.setProperty("QFont", constructFontClass(m_engine));
global.setProperty("QRectF", constructQRectFClass(m_engine));
global.setProperty("QSizeF", constructQSizeFClass(m_engine));
global.setProperty("QPoint", constructQPointClass(m_engine));
// Bindings for data engine
m_engine->setDefaultPrototype(qMetaTypeId<DataEngine*>(), m_engine->newQObject(new DataEngine()));
#if 0
fun = m_engine->newFunction(SimpleJavaScriptApplet::dataEngine);
m_self.setProperty("dataEngine", fun);
#endif
global.setProperty("dataEngine", m_engine->newFunction(SimpleJavaScriptApplet::dataEngine));
qScriptRegisterMapMetaType<DataEngine::Dict>(m_engine);
// qScriptRegisterMapMetaType<DataEngine::Data>(m_engine);
qScriptRegisterMetaType<DataEngine::Data>(m_engine, qScriptValueFromData, 0, QScriptValue());
installWidgets(m_engine);
}
QString SimpleJavaScriptApplet::findDataResource(const QString &filename)
{
QString path("plasma-script/%1");
return KGlobal::dirs()->findResource("data", path.arg(filename));
}
void SimpleJavaScriptApplet::debug(const QString &msg)
{
kDebug() << msg;
}
#if 0
QScriptValue SimpleJavaScriptApplet::dataEngine(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() != 1)
return context->throwError("dataEngine takes one argument");
QString dataEngine = context->argument(0).toString();
Script *self = engine->fromScriptValue<Script*>(context->thisObject());
DataEngine *data = self->dataEngine(dataEngine);
return engine->newQObject(data);
}
#endif
QScriptValue SimpleJavaScriptApplet::dataEngine(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() != 1) {
return context->throwError("dataEngine takes one argument");
}
QString dataEngine = context->argument(0).toString();
QScriptValue appletValue = engine->globalObject().property("plasmoid");
//kDebug() << "appletValue is " << appletValue.toString();
QObject *appletObject = appletValue.toQObject();
if (!appletObject) {
return context->throwError(i18n("Could not extract the AppletObject"));
}
AppletInterface *interface = qobject_cast<AppletInterface*>(appletObject);
if (!interface) {
return context->throwError(i18n("Could not extract the Applet"));
}
DataEngine *data = interface->dataEngine(dataEngine);
return engine->newQObject(data);
}
QScriptValue SimpleJavaScriptApplet::loadui(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() != 1) {
return context->throwError("loadui takes one argument");
}
QString filename = context->argument(0).toString();
QFile f(filename);
if (!f.open(QIODevice::ReadOnly)) {
return context->throwError(i18n("Unable to open '%1'",filename));
}
QUiLoader loader;
QWidget *w = loader.load(&f);
f.close();
return engine->newQObject(w);
}
QString SimpleJavaScriptApplet::findSvg(QScriptEngine *engine, const QString &file)
{
QScriptValue appletValue = engine->globalObject().property("plasmoid");
//kDebug() << "appletValue is " << appletValue.toString();
QObject *appletObject = appletValue.toQObject();
if (!appletObject) {
return file;
}
AppletInterface *interface = qobject_cast<AppletInterface*>(appletObject);
if (!interface) {
return file;
}
QString path = interface->package()->filePath("images", file + ".svg");
if (path.isEmpty()) {
path = interface->package()->filePath("images", file + ".svgz");
if (path.isEmpty()) {
return file;
}
}
return path;
}
QScriptValue SimpleJavaScriptApplet::newPlasmaSvg(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() == 0) {
return context->throwError(i18n("Constructor takes at least 1 argument"));
}
QString filename = context->argument(0).toString();
QObject *parent = 0;
if (context->argumentCount() == 2) {
parent = qscriptvalue_cast<QObject *>(context->argument(1));
}
Svg *svg = new Svg(parent);
svg->setImagePath(findSvg(engine, filename));
return engine->newQObject(svg);
}
QScriptValue SimpleJavaScriptApplet::newPlasmaFrameSvg(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() == 0) {
return context->throwError(i18n("Constructor takes at least 1 argument"));
}
QString filename = context->argument(0).toString();
QObject *parent = 0;
if (context->argumentCount() == 2) {
parent = qscriptvalue_cast<QObject *>(context->argument(1));
}
FrameSvg *frameSvg = new FrameSvg(parent);
frameSvg->setImagePath(findSvg(engine, filename));
return engine->newQObject(frameSvg);
}
void SimpleJavaScriptApplet::installWidgets(QScriptEngine *engine)
{
QScriptValue globalObject = engine->globalObject();
UiLoader loader;
QStringList widgets = loader.availableWidgets();
for (int i=0; i < widgets.size(); ++i) {
QScriptValue fun = engine->newFunction(createWidget);
QScriptValue name = engine->toScriptValue(widgets[i]);
fun.setProperty(QString("functionName"), name,
QScriptValue::ReadOnly | QScriptValue::Undeletable | QScriptValue::SkipInEnumeration);
fun.setProperty(QString("prototype"), createPrototype(engine, name.toString()));
globalObject.setProperty(widgets[i], fun);
}
}
QScriptValue SimpleJavaScriptApplet::createWidget(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() > 1) {
return context->throwError("Create widget takes one argument");
}
QGraphicsWidget *parent = 0;
if (context->argumentCount()) {
parent = qscriptvalue_cast<QGraphicsWidget*>(context->argument(0));
if (!parent) {
return context->throwError(i18n("The parent must be a QGraphicsWidget"));
}
}
QString self = context->callee().property("functionName").toString();
UiLoader loader;
QGraphicsWidget *w = loader.createWidget(self, parent);
if (!w) {
return QScriptValue();
}
QScriptValue fun = engine->newQObject(w);
fun.setPrototype(context->callee().property("prototype"));
return fun;
}
QScriptValue SimpleJavaScriptApplet::print(QScriptContext *context, QScriptEngine *engine)
{
if (context->argumentCount() != 1) {
return context->throwError(i18n("print takes one argument"));
}
kDebug() << context->argument(0).toString();
return engine->undefinedValue();
}
QScriptValue SimpleJavaScriptApplet::createPrototype(QScriptEngine *engine, const QString &name)
{
Q_UNUSED(name)
QScriptValue proto = engine->newObject();
// Hook for adding extra properties/methods
return proto;
}
K_EXPORT_PLASMA_APPLETSCRIPTENGINE(qscriptapplet, SimpleJavaScriptApplet)
#include "simplejavascriptapplet.moc"