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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "signalslot_utils_p.h"
#include <qdesigner_membersheet_p.h>
#include <widgetdatabase_p.h>
#include <metadatabase_p.h>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerMetaDataBaseInterface>
#include <QtDesigner/QExtensionManager>
#include <QtDesigner/QDesignerLanguageExtension>
#include <QtCore/QPair>
QT_BEGIN_NAMESPACE
typedef QPair<QString, QString> ClassNameSignaturePair;
// Find all member functions that match a predicate on the signature string
// using the member sheet and the fake methods stored in the widget
// database and the meta data base.
// Assign a pair of <classname, signature> to OutputIterator.
template <class SignaturePredicate, class OutputIterator>
static void memberList(QDesignerFormEditorInterface *core,
QObject *object,
qdesigner_internal::MemberType member_type,
bool showAll,
SignaturePredicate predicate,
OutputIterator it)
{
if (!object)
return;
// 1) member sheet
const QDesignerMemberSheetExtension *members = qt_extension<QDesignerMemberSheetExtension*>(core->extensionManager(), object);
Q_ASSERT(members != 0);
const int count = members->count();
for (int i = 0; i < count; ++i) {
if (!members->isVisible(i))
continue;
if (member_type == qdesigner_internal::SignalMember && !members->isSignal(i))
continue;
if (member_type == qdesigner_internal::SlotMember && !members->isSlot(i))
continue;
if (!showAll && members->inheritedFromWidget(i))
continue;
const QString signature = members->signature(i);
if (predicate(signature)) {
*it = ClassNameSignaturePair(members->declaredInClass(i), signature);
++it;
}
}
// 2) fake slots from widget DB
const qdesigner_internal::WidgetDataBase *wdb = qobject_cast<qdesigner_internal::WidgetDataBase *>(core->widgetDataBase());
if (!wdb)
return;
const int idx = wdb->indexOfObject(object);
Q_ASSERT(idx != -1);
// get the promoted class name
const qdesigner_internal::WidgetDataBaseItem *wdbItem = static_cast<qdesigner_internal::WidgetDataBaseItem *>(wdb->item(idx));
const QString className = wdbItem->name();
const QStringList wdbFakeMethods = member_type == qdesigner_internal::SlotMember ? wdbItem->fakeSlots() : wdbItem->fakeSignals();
if (!wdbFakeMethods.empty())
foreach (const QString &fakeMethod, wdbFakeMethods)
if (predicate(fakeMethod)) {
*it = ClassNameSignaturePair(className, fakeMethod);
++it;
}
// 3) fake slots from meta DB
qdesigner_internal::MetaDataBase *metaDataBase = qobject_cast<qdesigner_internal::MetaDataBase *>(core->metaDataBase());
if (!metaDataBase)
return;
const qdesigner_internal::MetaDataBaseItem *mdbItem = metaDataBase->metaDataBaseItem(object);
Q_ASSERT(mdbItem);
const QStringList mdbFakeMethods = member_type == qdesigner_internal::SlotMember ? mdbItem->fakeSlots() : mdbItem->fakeSignals();
if (!mdbFakeMethods.empty())
foreach (const QString &fakeMethod, mdbFakeMethods)
if (predicate(fakeMethod)) {
*it = ClassNameSignaturePair(className, fakeMethod);
++it;
}
}
namespace {
// Predicate that matches the exact signature string
class EqualsPredicate {
public:
EqualsPredicate(const QString &pattern) : m_pattern(pattern) {}
bool operator()(const QString &s) const { return s == m_pattern; }
private:
const QString m_pattern;
};
// Predicate for a QString member signature that matches signals up with slots and vice versa
class SignalMatchesSlotPredicate {
public:
SignalMatchesSlotPredicate(QDesignerFormEditorInterface *core, const QString &peer, qdesigner_internal::MemberType memberType);
bool operator()(const QString &s) const;
private:
bool signalMatchesSlot(const QString &signal, const QString &slot) const;
const QString m_peer;
qdesigner_internal::MemberType m_memberType;
const QDesignerLanguageExtension *m_lang;
};
SignalMatchesSlotPredicate::SignalMatchesSlotPredicate(QDesignerFormEditorInterface *core, const QString &peer, qdesigner_internal::MemberType memberType) :
m_peer(peer),
m_memberType(memberType),
m_lang(qt_extension<QDesignerLanguageExtension*>(core->extensionManager(), core))
{
}
bool SignalMatchesSlotPredicate::operator()(const QString &s) const
{
return m_memberType == qdesigner_internal::SlotMember ? signalMatchesSlot(m_peer, s) : signalMatchesSlot(s, m_peer);
}
bool SignalMatchesSlotPredicate::signalMatchesSlot(const QString &signal, const QString &slot) const
{
if (m_lang)
return m_lang->signalMatchesSlot(signal, slot);
return QDesignerMemberSheet::signalMatchesSlot(signal, slot);
}
// Output iterator for a pair of pair of <classname, signature>
// that builds the reverse class list for reverseClassesMemberFunctions()
// (for the combos of the ToolWindow)
class ReverseClassesMemberIterator {
public:
ReverseClassesMemberIterator(qdesigner_internal::ClassesMemberFunctions *result);
ReverseClassesMemberIterator &operator*() { return *this; }
ReverseClassesMemberIterator &operator++(int) { return *this; }
ReverseClassesMemberIterator &operator++() { return *this; }
void operator=(const ClassNameSignaturePair &classNameSignature);
private:
qdesigner_internal::ClassesMemberFunctions *m_result;
QString m_lastClassName;
QStringList *m_memberList;
};
ReverseClassesMemberIterator::ReverseClassesMemberIterator(qdesigner_internal::ClassesMemberFunctions *result) :
m_result(result),
m_memberList(0)
{
}
void ReverseClassesMemberIterator::operator=(const ClassNameSignaturePair &classNameSignature)
{
// prepend a new entry if class changes
if (!m_memberList || classNameSignature.first != m_lastClassName) {
m_lastClassName = classNameSignature.first;
m_result->push_front(qdesigner_internal::ClassMemberFunctions(m_lastClassName));
m_memberList = &(m_result->front().m_memberList);
}
m_memberList->push_back(classNameSignature.second);
}
// Output iterator for a pair of pair of <classname, signature>
// that adds the signatures to a string list
class SignatureIterator {
public:
SignatureIterator(QMap<QString, QString> *result) : m_result(result) {}
SignatureIterator &operator*() { return *this; }
SignatureIterator &operator++(int) { return *this; }
SignatureIterator &operator++() { return *this; }
void operator=(const ClassNameSignaturePair &classNameSignature) {
m_result->insert(classNameSignature.second, classNameSignature.first);
}
private:
QMap<QString, QString> *m_result;
};
}
static inline bool truePredicate(const QString &) { return true; }
namespace qdesigner_internal {
ClassMemberFunctions::ClassMemberFunctions(const QString &class_name) :
m_className(class_name)
{
}
bool signalMatchesSlot(QDesignerFormEditorInterface *core, const QString &signal, const QString &slot)
{
const SignalMatchesSlotPredicate predicate(core, signal, qdesigner_internal::SlotMember);
return predicate(slot);
}
// return classes and members in reverse class order to
// populate of the combo of the ToolWindow
ClassesMemberFunctions reverseClassesMemberFunctions(const QString &obj_name, MemberType member_type,
const QString &peer, QDesignerFormWindowInterface *form)
{
QObject *object = form->findChild<QObject*>(obj_name);
if (!object)
return ClassesMemberFunctions();
QDesignerFormEditorInterface *core = form->core();
ClassesMemberFunctions rc;
memberList(form->core(), object, member_type, true, SignalMatchesSlotPredicate(core, peer, member_type),
ReverseClassesMemberIterator(&rc));
return rc;
}
QMap<QString, QString> getSignals(QDesignerFormEditorInterface *core, QObject *object, bool showAll)
{
QMap<QString, QString> rc;
memberList(core, object, SignalMember, showAll, truePredicate, SignatureIterator(&rc));
return rc;
}
bool isQt3Signal(QDesignerFormEditorInterface *core,
QObject *object, const QString &signalSignature)
{
if (const QDesignerMemberSheetExtension *members
= qt_extension<QDesignerMemberSheetExtension*>(core->extensionManager(), object)) {
const int count = members->count();
for (int i = 0; i < count; ++i)
if (members->isSignal(i) && members->signature(i) == signalSignature) {
const QDesignerMemberSheet *memberSheet
= qobject_cast<QDesignerMemberSheet*>(core->extensionManager()->extension(object,
Q_TYPEID(QDesignerMemberSheetExtension)));
return (memberSheet && memberSheet->isQt3Signal(i));
}
}
return false;
}
bool isQt3Slot(QDesignerFormEditorInterface *core,
QObject *object, const QString &slotSignature)
{
if (const QDesignerMemberSheetExtension *members
= qt_extension<QDesignerMemberSheetExtension*>(core->extensionManager(), object)) {
Q_ASSERT(members != 0);
const int count = members->count();
for (int i = 0; i < count; ++i)
if (members->isSlot(i) && members->signature(i) == slotSignature) {
const QDesignerMemberSheet *memberSheet
= qobject_cast<QDesignerMemberSheet*>(core->extensionManager()->extension(object,
Q_TYPEID(QDesignerMemberSheetExtension)));
return (memberSheet && memberSheet->isQt3Slot(i));
}
}
return false;
}
QMap<QString, QString> getMatchingSlots(QDesignerFormEditorInterface *core, QObject *object, const QString &signalSignature, bool showAll)
{
QMap<QString, QString> rc;
memberList(core, object, SlotMember, showAll, SignalMatchesSlotPredicate(core, signalSignature, qdesigner_internal::SlotMember), SignatureIterator(&rc));
return rc;
}
bool memberFunctionListContains(QDesignerFormEditorInterface *core, QObject *object, MemberType type, const QString &signature)
{
QMap<QString, QString> rc;
memberList(core, object, type, true, EqualsPredicate(signature), SignatureIterator(&rc));
return !rc.empty();
}
// ### deprecated
QString realObjectName(QDesignerFormEditorInterface *core, QObject *object)
{
if (!object)
return QString();
const QDesignerMetaDataBaseInterface *mdb = core->metaDataBase();
if (const QDesignerMetaDataBaseItemInterface *item = mdb->item(object))
return item->name();
return object->objectName();
}
} // namespace qdesigner_internal
QT_END_NAMESPACE
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