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/*
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "Identifier.h"
#include "qt_class.h"
#include "qt_instance.h"
#include "qt_runtime.h"
#include <qmetaobject.h>
#include <qdebug.h>
namespace JSC {
namespace Bindings {
QtClass::QtClass(const QMetaObject* mo)
: m_metaObject(mo)
{
}
QtClass::~QtClass()
{
}
typedef HashMap<const QMetaObject*, QtClass*> ClassesByMetaObject;
static ClassesByMetaObject* classesByMetaObject = 0;
QtClass* QtClass::classForObject(QObject* o)
{
if (!classesByMetaObject)
classesByMetaObject = new ClassesByMetaObject;
const QMetaObject* mo = o->metaObject();
QtClass* aClass = classesByMetaObject->get(mo);
if (!aClass) {
aClass = new QtClass(mo);
classesByMetaObject->set(mo, aClass);
}
return aClass;
}
const char* QtClass::name() const
{
return m_metaObject->className();
}
// We use this to get at signals (so we can return a proper function object,
// and not get wrapped in RuntimeMethod). Also, use this for methods,
// so we can cache the object and return the same object for the same
// identifier.
JSValue QtClass::fallbackObject(ExecState* exec, Instance* inst, const Identifier& identifier)
{
QtInstance* qtinst = static_cast<QtInstance*>(inst);
QByteArray name(identifier.ascii());
// First see if we have a cache hit
JSObject* val = qtinst->m_methods.value(name);
if (val)
return val;
// Nope, create an entry
QByteArray normal = QMetaObject::normalizedSignature(name.constData());
// See if there is an exact match
int index = -1;
if (normal.contains('(') && (index = m_metaObject->indexOfMethod(normal)) != -1) {
QMetaMethod m = m_metaObject->method(index);
if (m.access() != QMetaMethod::Private) {
QtRuntimeMetaMethod* val = new (exec) QtRuntimeMetaMethod(exec, identifier, static_cast<QtInstance*>(inst), index, normal, false);
qtinst->m_methods.insert(name, val);
return val;
}
}
// Nope.. try a basename match
int count = m_metaObject->methodCount();
for (index = count - 1; index >= 0; --index) {
const QMetaMethod m = m_metaObject->method(index);
if (m.access() == QMetaMethod::Private)
continue;
QByteArray signature = m.signature();
signature.truncate(signature.indexOf('('));
if (normal == signature) {
QtRuntimeMetaMethod* val = new (exec) QtRuntimeMetaMethod(exec, identifier, static_cast<QtInstance*>(inst), index, normal, false);
qtinst->m_methods.insert(name, val);
return val;
}
}
return jsUndefined();
}
// This functionality is handled by the fallback case above...
MethodList QtClass::methodsNamed(const Identifier&, Instance*) const
{
return MethodList();
}
// ### we may end up with a different search order than QtScript by not
// folding this code into the fallbackMethod above, but Fields propagate out
// of the binding code
Field* QtClass::fieldNamed(const Identifier& identifier, Instance* instance) const
{
// Check static properties first
QtInstance* qtinst = static_cast<QtInstance*>(instance);
QObject* obj = qtinst->getObject();
UString ustring = identifier.ustring();
QString objName((const QChar*)ustring.rep()->data(), ustring.size());
QByteArray ba = objName.toAscii();
// First check for a cached field
QtField* f = qtinst->m_fields.value(objName);
if (obj) {
if (f) {
// We only cache real metaproperties, but we do store the
// other types so we can delete them later
if (f->fieldType() == QtField::MetaProperty)
return f;
else if (f->fieldType() == QtField::DynamicProperty) {
if (obj->dynamicPropertyNames().indexOf(ba) >= 0)
return f;
else {
// Dynamic property that disappeared
qtinst->m_fields.remove(objName);
delete f;
}
} else {
QList<QObject*> children = obj->children();
for (int index = 0; index < children.count(); ++index) {
QObject *child = children.at(index);
if (child->objectName() == objName)
return f;
}
// Didn't find it, delete it from the cache
qtinst->m_fields.remove(objName);
delete f;
}
}
int index = m_metaObject->indexOfProperty(identifier.ascii());
if (index >= 0) {
QMetaProperty prop = m_metaObject->property(index);
if (prop.isScriptable(obj)) {
f = new QtField(prop);
qtinst->m_fields.insert(objName, f);
return f;
}
}
// Dynamic properties
index = obj->dynamicPropertyNames().indexOf(ba);
if (index >= 0) {
f = new QtField(ba);
qtinst->m_fields.insert(objName, f);
return f;
}
// Child objects
QList<QObject*> children = obj->children();
for (index = 0; index < children.count(); ++index) {
QObject *child = children.at(index);
if (child->objectName() == objName) {
f = new QtField(child);
qtinst->m_fields.insert(objName, f);
return f;
}
}
// Nothing named this
return 0;
} else {
QByteArray ba(identifier.ascii());
// For compatibility with qtscript, cached methods don't cause
// errors until they are accessed, so don't blindly create an error
// here.
if (qtinst->m_methods.contains(ba))
return 0;
// deleted qobject, but can't throw an error from here (no exec)
// create a fake QtField that will throw upon access
if (!f) {
f = new QtField(ba);
qtinst->m_fields.insert(objName, f);
}
return f;
}
}
}
}
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