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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "signalslotdialog_p.h"
#include "ui_signalslotdialog.h"
#include "metadatabase_p.h"
#include "widgetdatabase_p.h"
#include "qdesigner_formwindowcommand_p.h"
#include "iconloader_p.h"
#include <QtDesigner/QDesignerMemberSheetExtension>
#include <QtDesigner/QExtensionManager>
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerWidgetFactoryInterface>
#include <abstractdialoggui_p.h>
#include <QtGui/QStandardItemModel>
#include <QtGui/QRegExpValidator>
#include <QtGui/QItemDelegate>
#include <QtGui/QLineEdit>
#include <QtGui/QApplication>
#include <QtGui/QMessageBox>
#include <QtCore/QRegExp>
#include <QtCore/QDebug>
QT_BEGIN_NAMESPACE
// Regexp to match a function signature, arguments potentially
// with namespace colons.
static const char *signatureRegExp = "^[\\w+_]+\\(([\\w+:]\\*?,?)*\\)$";
static const char *methodNameRegExp = "^[\\w+_]+$";
static QStandardItem *createEditableItem(const QString &text)
{
QStandardItem *rc = new QStandardItem(text);
rc->setFlags(Qt::ItemIsEnabled|Qt::ItemIsEditable|Qt::ItemIsSelectable);
return rc;
}
static QStandardItem *createDisabledItem(const QString &text)
{
QStandardItem *rc = new QStandardItem(text);
Qt::ItemFlags flags = rc->flags();
rc->setFlags(flags & ~(Qt::ItemIsEnabled|Qt::ItemIsEditable|Qt::ItemIsSelectable));
return rc;
}
static void fakeMethodsFromMetaDataBase(QDesignerFormEditorInterface *core, QObject *o, QStringList &slotList, QStringList &signalList)
{
slotList.clear();
signalList.clear();
if (qdesigner_internal::MetaDataBase *metaDataBase = qobject_cast<qdesigner_internal::MetaDataBase *>(core->metaDataBase()))
if (const qdesigner_internal::MetaDataBaseItem *item = metaDataBase->metaDataBaseItem(o)) {
slotList = item->fakeSlots();
signalList = item->fakeSignals();
}
}
static void fakeMethodsToMetaDataBase(QDesignerFormEditorInterface *core, QObject *o, const QStringList &slotList, const QStringList &signalList)
{
if (qdesigner_internal::MetaDataBase *metaDataBase = qobject_cast<qdesigner_internal::MetaDataBase *>(core->metaDataBase())) {
qdesigner_internal::MetaDataBaseItem *item = metaDataBase->metaDataBaseItem(o);
Q_ASSERT(item);
item->setFakeSlots(slotList);
item->setFakeSignals(signalList);
}
}
static void existingMethodsFromMemberSheet(QDesignerFormEditorInterface *core,
QObject *o,
QStringList &slotList, QStringList &signalList)
{
slotList.clear();
signalList.clear();
QDesignerMemberSheetExtension *msheet = qt_extension<QDesignerMemberSheetExtension*>(core->extensionManager(), o);
if (!msheet)
return;
for (int i = 0, count = msheet->count(); i < count; ++i)
if (msheet->isVisible(i)) {
if (msheet->isSlot(i))
slotList += msheet->signature(i);
else
if (msheet->isSignal(i))
signalList += msheet->signature(i);
}
}
namespace {
// Internal helper class: A Delegate that validates using RegExps and additionally checks
// on closing (adds missing parentheses).
class SignatureDelegate : public QItemDelegate {
public:
SignatureDelegate(QObject * parent = 0);
virtual QWidget * createEditor (QWidget * parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
virtual void setModelData (QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
private:
const QRegExp m_signatureRegexp;
const QRegExp m_methodNameRegexp;
};
SignatureDelegate::SignatureDelegate(QObject * parent) :
QItemDelegate(parent),
m_signatureRegexp(QLatin1String(signatureRegExp)),
m_methodNameRegexp(QLatin1String(methodNameRegExp))
{
Q_ASSERT(m_signatureRegexp.isValid());
Q_ASSERT(m_methodNameRegexp.isValid());
}
QWidget * SignatureDelegate::createEditor ( QWidget * parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{
QWidget *rc = QItemDelegate::createEditor(parent, option, index);
QLineEdit *le = qobject_cast<QLineEdit *>(rc);
Q_ASSERT(le);
le->setValidator(new QRegExpValidator(m_signatureRegexp, le));
return rc;
}
void SignatureDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const
{
QLineEdit *le = qobject_cast<QLineEdit *>(editor);
Q_ASSERT(le);
// Did the user just type a name? .. Add parentheses
QString signature = le->text();
if (!m_signatureRegexp.exactMatch(signature )) {
if (m_methodNameRegexp.exactMatch(signature )) {
signature += QLatin1String("()");
le->setText(signature);
} else {
return;
}
}
QItemDelegate::setModelData(editor, model, index);
}
// ------ FakeMethodMetaDBCommand: Undo Command to change fake methods in the meta DB.
class FakeMethodMetaDBCommand : public qdesigner_internal::QDesignerFormWindowCommand {
public:
explicit FakeMethodMetaDBCommand(QDesignerFormWindowInterface *formWindow);
void init(QObject *o,
const QStringList &oldFakeSlots, const QStringList &oldFakeSignals,
const QStringList &newFakeSlots, const QStringList &newFakeSignals);
virtual void undo() { fakeMethodsToMetaDataBase(core(), m_object, m_oldFakeSlots, m_oldFakeSignals); }
virtual void redo() { fakeMethodsToMetaDataBase(core(), m_object, m_newFakeSlots, m_newFakeSignals); }
private:
QObject *m_object;
QStringList m_oldFakeSlots;
QStringList m_oldFakeSignals;
QStringList m_newFakeSlots;
QStringList m_newFakeSignals;
};
FakeMethodMetaDBCommand::FakeMethodMetaDBCommand(QDesignerFormWindowInterface *formWindow) :
qdesigner_internal::QDesignerFormWindowCommand(QApplication::translate("Command", "Change signals/slots"), formWindow),
m_object(0)
{
}
void FakeMethodMetaDBCommand::init(QObject *o,
const QStringList &oldFakeSlots, const QStringList &oldFakeSignals,
const QStringList &newFakeSlots, const QStringList &newFakeSignals)
{
m_object = o;
m_oldFakeSlots = oldFakeSlots;
m_oldFakeSignals = oldFakeSignals;
m_newFakeSlots = newFakeSlots;
m_newFakeSignals = newFakeSignals;
}
}
namespace qdesigner_internal {
// ------ SignalSlotDialogData
void SignalSlotDialogData::clear()
{
m_existingMethods.clear();
m_fakeMethods.clear();
}
// ------ SignatureModel
SignatureModel::SignatureModel(QObject *parent) :
QStandardItemModel(parent)
{
}
bool SignatureModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (role != Qt::EditRole)
return QStandardItemModel::setData(index, value, role);
// check via signal (unless it is the same), in which case we can't be bothered.
const QStandardItem *item = itemFromIndex(index);
Q_ASSERT(item);
const QString signature = value.toString();
if (item->text() == signature)
return true;
bool ok = true;
emit checkSignature(signature, &ok);
if (!ok)
return false;
return QStandardItemModel::setData(index, value, role);
}
// ------ SignaturePanel
SignaturePanel::SignaturePanel(QObject *parent, QListView *listView, QToolButton *addButton, QToolButton *removeButton, const QString &newPrefix) :
QObject(parent),
m_newPrefix(newPrefix),
m_model(new SignatureModel(this)),
m_listView(listView),
m_removeButton(removeButton)
{
m_removeButton->setEnabled(false);
connect(addButton, SIGNAL(clicked()), this, SLOT(slotAdd()));
connect(m_removeButton, SIGNAL(clicked()), this, SLOT(slotRemove()));
m_listView->setModel(m_model);
SignatureDelegate *delegate = new SignatureDelegate(this);
m_listView->setItemDelegate(delegate);
connect(m_model, SIGNAL(checkSignature(QString,bool*)), this, SIGNAL(checkSignature(QString,bool*)));
connect(m_listView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
this, SLOT(slotSelectionChanged(QItemSelection,QItemSelection)));
}
void SignaturePanel::slotAdd()
{
m_listView->selectionModel()->clearSelection();
// find unique name
for (int i = 1; ; i++) {
QString newSlot = m_newPrefix;
newSlot += QString::number(i); // Always add number, Avoid setting 'slot' for first entry
newSlot += QLatin1Char('(');
// check for function name independent of parameters
if (m_model->findItems(newSlot, Qt::MatchStartsWith, 0).empty()) {
newSlot += QLatin1Char(')');
QStandardItem * item = createEditableItem(newSlot);
m_model->appendRow(item);
const QModelIndex index = m_model->indexFromItem (item);
m_listView->setCurrentIndex (index);
m_listView->edit(index);
return;
}
}
}
int SignaturePanel::count(const QString &signature) const
{
return m_model->findItems(signature).size();
}
void SignaturePanel::slotRemove()
{
const QModelIndexList selectedIndexes = m_listView->selectionModel()->selectedIndexes ();
if (selectedIndexes.empty())
return;
closeEditor();
// scroll to previous
if (const int row = selectedIndexes.front().row())
m_listView->setCurrentIndex (selectedIndexes.front().sibling(row - 1, 0));
for (int i = selectedIndexes.size() - 1; i >= 0; i--)
qDeleteAll(m_model->takeRow(selectedIndexes[i].row()));
}
void SignaturePanel::slotSelectionChanged(const QItemSelection &selected, const QItemSelection &)
{
m_removeButton->setEnabled(!selected.indexes().empty());
}
void SignaturePanel::setData(const SignalSlotDialogData &d)
{
m_model->clear();
QStandardItem *lastExisting = 0;
foreach(const QString &s, d.m_existingMethods) {
lastExisting = createDisabledItem(s);
m_model->appendRow(lastExisting);
}
foreach(const QString &s, d.m_fakeMethods)
m_model->appendRow(createEditableItem(s));
if (lastExisting)
m_listView->scrollTo(m_model->indexFromItem(lastExisting));
}
QStringList SignaturePanel::fakeMethods() const
{
QStringList rc;
if (const int rowCount = m_model->rowCount())
for (int i = 0; i < rowCount; i++) {
const QStandardItem *item = m_model->item(i);
if (item->flags() & Qt::ItemIsEditable)
rc += item->text();
}
return rc;
}
void SignaturePanel::closeEditor()
{
const QModelIndex idx = m_listView->currentIndex();
if (idx.isValid())
m_listView->closePersistentEditor(idx);
}
// ------ SignalSlotDialog
SignalSlotDialog::SignalSlotDialog(QDesignerDialogGuiInterface *dialogGui, QWidget *parent, FocusMode mode) :
QDialog(parent),
m_focusMode(mode),
m_ui(new Ui::SignalSlotDialogClass),
m_dialogGui(dialogGui)
{
setModal(true);
m_ui->setupUi(this);
const QIcon plusIcon = qdesigner_internal::createIconSet(QString::fromUtf8("plus.png"));
const QIcon minusIcon = qdesigner_internal::createIconSet(QString::fromUtf8("minus.png"));
m_ui->addSlotButton->setIcon(plusIcon);
m_ui->removeSlotButton->setIcon(minusIcon);
m_ui->addSignalButton->setIcon(plusIcon);
m_ui->removeSignalButton->setIcon(minusIcon);
m_slotPanel = new SignaturePanel(this, m_ui->slotListView, m_ui->addSlotButton, m_ui->removeSlotButton, QLatin1String("slot"));
m_signalPanel = new SignaturePanel(this, m_ui->signalListView, m_ui->addSignalButton, m_ui->removeSignalButton, QLatin1String("signal"));
connect(m_slotPanel, SIGNAL(checkSignature(QString,bool*)), this, SLOT(slotCheckSignature(QString,bool*)));
connect(m_signalPanel, SIGNAL(checkSignature(QString,bool*)), this, SLOT(slotCheckSignature(QString,bool*)));
connect(m_ui->buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
connect(m_ui->buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
switch(m_focusMode) {
case FocusSlots:
m_ui->slotListView->setFocus(Qt::OtherFocusReason);
break;
case FocusSignals:
m_ui->signalListView->setFocus(Qt::OtherFocusReason);
break;
}
}
SignalSlotDialog::~SignalSlotDialog()
{
delete m_ui;
}
void SignalSlotDialog::slotCheckSignature(const QString &signature, bool *ok)
{
QString errorMessage;
do {
if (m_slotPanel->count(signature)) {
errorMessage = tr("There is already a slot with the signature '%1'.").arg(signature);
*ok = false;
break;
}
if (m_signalPanel->count(signature)) {
errorMessage = tr("There is already a signal with the signature '%1'.").arg(signature);
*ok = false;
break;
}
} while (false);
if (!*ok)
m_dialogGui->message(this, QDesignerDialogGuiInterface::SignalSlotDialogMessage,
QMessageBox::Warning, tr("%1 - Duplicate Signature").arg(windowTitle()), errorMessage, QMessageBox::Close);
}
QDialog::DialogCode SignalSlotDialog::showDialog(SignalSlotDialogData &slotData, SignalSlotDialogData &signalData)
{
m_slotPanel->setData(slotData);
m_signalPanel->setData(signalData);
const DialogCode rc = static_cast<DialogCode>(exec());
if (rc == Rejected)
return rc;
slotData.m_fakeMethods = m_slotPanel->fakeMethods();
signalData.m_fakeMethods = m_signalPanel->fakeMethods();
return rc;
}
bool SignalSlotDialog::editMetaDataBase(QDesignerFormWindowInterface *fw, QObject *object, QWidget *parent, FocusMode mode)
{
QDesignerFormEditorInterface *core = fw->core();
SignalSlotDialog dlg(core->dialogGui(), parent, mode);
dlg.setWindowTitle(tr("Signals/Slots of %1").arg(object->objectName()));
SignalSlotDialogData slotData;
SignalSlotDialogData signalData;
existingMethodsFromMemberSheet(core, object, slotData.m_existingMethods, signalData.m_existingMethods);
fakeMethodsFromMetaDataBase(core, object, slotData.m_fakeMethods, signalData.m_fakeMethods);
const QStringList oldSlots = slotData.m_fakeMethods;
const QStringList oldSignals = signalData.m_fakeMethods;
if (dlg.showDialog(slotData, signalData) == QDialog::Rejected)
return false;
if (oldSlots == slotData.m_fakeMethods && oldSignals == signalData.m_fakeMethods)
return false;
FakeMethodMetaDBCommand *cmd = new FakeMethodMetaDBCommand(fw);
cmd->init(object, oldSlots, oldSignals, slotData.m_fakeMethods, signalData.m_fakeMethods);
fw->commandHistory()->push(cmd);
return true;
}
bool SignalSlotDialog::editPromotedClass(QDesignerFormEditorInterface *core, const QString &promotedClassName, QWidget *parent, FocusMode mode)
{
const int index = core->widgetDataBase()->indexOfClassName(promotedClassName);
if (index == -1)
return false;
const QString baseClassName = core->widgetDataBase()->item(index)->extends();
if (baseClassName.isEmpty())
return false;
QWidget *widget = core->widgetFactory()->createWidget(baseClassName, 0);
if (!widget)
return false;
const bool rc = editPromotedClass(core, promotedClassName, widget, parent, mode);
widget->deleteLater();
return rc;
}
bool SignalSlotDialog::editPromotedClass(QDesignerFormEditorInterface *core, QObject *baseObject, QWidget *parent, FocusMode mode)
{
if (!baseObject->isWidgetType())
return false;
const QString promotedClassName = promotedCustomClassName(core, qobject_cast<QWidget*>(baseObject));
if (promotedClassName.isEmpty())
return false;
return editPromotedClass(core, promotedClassName, baseObject, parent, mode);
}
bool SignalSlotDialog::editPromotedClass(QDesignerFormEditorInterface *core, const QString &promotedClassName, QObject *object, QWidget *parent, FocusMode mode)
{
WidgetDataBase *db = qobject_cast<WidgetDataBase *>(core->widgetDataBase());
if (!db)
return false;
const int index = core->widgetDataBase()->indexOfClassName(promotedClassName);
if (index == -1)
return false;
WidgetDataBaseItem* item = static_cast<WidgetDataBaseItem*>(db->item(index));
SignalSlotDialogData slotData;
SignalSlotDialogData signalData;
existingMethodsFromMemberSheet(core, object, slotData.m_existingMethods, signalData.m_existingMethods);
slotData.m_fakeMethods = item->fakeSlots();
signalData.m_fakeMethods = item->fakeSignals();
const QStringList oldSlots = slotData.m_fakeMethods;
const QStringList oldSignals = signalData.m_fakeMethods;
SignalSlotDialog dlg(core->dialogGui(), parent, mode);
dlg.setWindowTitle(tr("Signals/Slots of %1").arg(promotedClassName));
if (dlg.showDialog(slotData, signalData) == QDialog::Rejected)
return false;
if (oldSlots == slotData.m_fakeMethods && oldSignals == signalData.m_fakeMethods)
return false;
item->setFakeSlots(slotData.m_fakeMethods);
item->setFakeSignals(signalData.m_fakeMethods);
return true;
}
}
QT_END_NAMESPACE
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