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#include "scriptadapter.h"
#include "optionsitem.h"
#include <QtCore/QMetaEnum>
#include <QtCore/QCoreApplication>
#include <QtCore/QTimer>
#include <QtCore/QTime>
#include <QtCore/QFile>
#include <QtCore/QDir>
#include <QtCore/QDebug>
#include <QtGui/QMessageBox>
template <typename Enum>
static void scriptToEnum(const QScriptValue &obj, Enum &e)
{
e = static_cast<Enum>(obj.toInt32());
}
template <typename Enum>
static QScriptValue enumToScript(QScriptEngine *engine, const Enum &e)
{
QScriptValue obj = engine->newVariant(e);
return obj;
}
// Adds a property 'name' to 'to' that contains all the values of the enum 'name',
// which must be registered in 'mo'. Also registers the type 'Enum' to the QScriptEngine.
template <typename Enum>
static void exposeEnum(QScriptEngine *engine, QScriptValue *to, const char *name, const QMetaObject *mo)
{
qScriptRegisterMetaType<Enum>(engine, &enumToScript<Enum>, &scriptToEnum<Enum>);
QScriptValue enumvals = engine->newObject();
int enumIndex = mo->indexOfEnumerator(name);
Q_ASSERT(enumIndex != -1 && "enum not found in meta object");
QMetaEnum metaEnum = mo->enumerator(enumIndex);
for (int i = 0; i < metaEnum.keyCount(); ++i)
enumvals.setProperty(metaEnum.key(i), metaEnum.value(i));
to->setProperty(name, enumvals);
}
ScriptAdapter::ScriptAdapter(QObject *parent)
: QObject(parent)
{
mScriptRunner = new QTimer(this);
mScriptRunner->setSingleShot(true);
mScriptRunner->setInterval(100);
connect(mScriptRunner, SIGNAL(timeout()), this, SLOT(continueScripts()));
mScriptRunner->start();
mMessageBox = new QMessageBox;
}
ScriptAdapter::~ScriptAdapter()
{
delete mMessageBox;
}
void ScriptAdapter::addScriptInterface(const QString &name, QObject *interface)
{
mScriptInterfaces.insert(name, interface);
}
ScriptFiber *ScriptAdapter::script(int index)
{
if (index >= 0 && index < mActiveScripts.length())
return mActiveScripts[index];
else
return 0;
}
void ScriptAdapter::runAutostartScripts()
{
QDir dir(QCoreApplication::applicationDirPath());
dir.cd(QLatin1String("scripts"));
dir.cd(QLatin1String("autostart"));
QStringList scriptPatterns;
scriptPatterns << "*.js" << "*.qs";
foreach (const QFileInfo &file, dir.entryInfoList(scriptPatterns, QDir::Files)) {
run(file.filePath());
}
}
ScriptFiber *ScriptAdapter::run(const QString &filePath)
{
QFile file(filePath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "Could not read script file: " << filePath;
return 0;
}
QFileInfo fileInfo(file);
ScriptFiber *script = new ScriptFiber(fileInfo.baseName(), file.readAll(), this);
mActiveScripts += script;
emit scriptStart(script);
return script;
}
void ScriptAdapter::continueScripts() {
for (int i = 0; i < mActiveScripts.length(); ++i) {
ScriptFiber *script = mActiveScripts[i];
if (script->status() == Fiber::Terminated) {
emit scriptStop(i);
mActiveScripts.removeOne(script);
delete script;
break;
}
if (!script->isPaused() || script->isTerminating()) {
script->cont();
}
}
mScriptRunner->start();
}
void ScriptAdapter::yield(int ms)
{
ScriptFiber *scriptFiber = dynamic_cast<ScriptFiber *>(Fiber::currentFiber());
if (!scriptFiber)
return;
QTime timer;
timer.start();
while (timer.elapsed() < ms && !scriptFiber->isTerminating()) {
scriptFiber->suspend();
}
}
void ScriptAdapter::messageBox(const QString &text)
{
mMessageBox->setText(text);
// message boxes should block
ScriptFiber *fiber = dynamic_cast<ScriptFiber *>(Fiber::currentFiber());
fiber->beginBlocking();
mMessageBox->exec();
fiber->endBlocking();
}
ScriptFiber::ScriptFiber(const QString &name, const QString &scriptCode,
ScriptAdapter *adapter)
: Fiber(524228) // FIXME: 131072 was not big enough...
, mName(name)
, mScriptCode(scriptCode)
, mAdapter(adapter)
, mPaused(false)
, mTerminate(false)
{
mStopTimer.setInterval(10);
connect(&mStopTimer, SIGNAL(timeout()), this, SLOT(suspend()));
// trigger event processing during script evaluation
mEngine.setProcessEventsInterval(10);
// inject the ScriptAdapters functions into the global scope
QScriptValue adapterValue = mEngine.newQObject(adapter);
adapterValue.setPrototype(mEngine.globalObject());
mEngine.setGlobalObject(adapterValue);
QHashIterator<QString, QObject *> iter(mAdapter->mScriptInterfaces);
while (iter.hasNext()) {
iter.next();
QScriptValue interface = mEngine.newQObject(iter.value());
mEngine.globalObject().setProperty(iter.key(), interface);
}
}
void ScriptFiber::run()
{
mStopTimer.start();
QScriptValue value = mEngine.evaluate(mScriptCode);
if (value.isError()) {
qWarning() << "Script execution resulted in an error:" << value.toString();
}
mStopTimer.stop();
}
void ScriptFiber::requestTerminate()
{
mTerminate = true;
}
void ScriptFiber::togglePause()
{
mPaused = !mPaused;
}
void ScriptFiber::suspend()
{
if (Fiber::currentFiber() == this) {
Fiber::yield();
if (mTerminate) {
mEngine.abortEvaluation(mEngine.currentContext()->throwError("Aborted"));
mStopTimer.stop();
}
}
}
void ScriptFiber::beginBlocking()
{
mStopTimer.stop();
}
void ScriptFiber::endBlocking()
{
mStopTimer.start();
}
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