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Diffstat (limited to 'tools/designer/src/lib/shared/signalslotdialog.cpp')
| -rw-r--r-- | tools/designer/src/lib/shared/signalslotdialog.cpp | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/tools/designer/src/lib/shared/signalslotdialog.cpp b/tools/designer/src/lib/shared/signalslotdialog.cpp new file mode 100644 index 0000000..a23d228 --- /dev/null +++ b/tools/designer/src/lib/shared/signalslotdialog.cpp @@ -0,0 +1,526 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |