Long live Qt 4.5!

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diff --git a/tools/designer/src/lib/shared/qdesigner_promotiondialog.cpp b/tools/designer/src/lib/shared/qdesigner_promotiondialog.cpp
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+/****************************************************************************
+**
+** 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+TRANSLATOR qdesigner_internal::QDesignerPromotionDialog
+*/
+
+#include "qdesigner_promotiondialog_p.h"
+#include "promotionmodel_p.h"
+#include "iconloader_p.h"
+#include "widgetdatabase_p.h"
+#include "signalslotdialog_p.h"
+
+#include <QtDesigner/QDesignerFormEditorInterface>
+#include <QtDesigner/QDesignerFormWindowInterface>
+#include <QtDesigner/QDesignerPromotionInterface>
+#include <QtDesigner/QDesignerWidgetDataBaseItemInterface>
+#include <abstractdialoggui_p.h>
+
+#include <QtCore/QTimer>
+#include <QtGui/QVBoxLayout>
+#include <QtGui/QHBoxLayout>
+#include <QtGui/QFormLayout>
+#include <QtGui/QDialogButtonBox>
+#include <QtGui/QTreeView>
+#include <QtGui/QHeaderView>
+#include <QtGui/QPushButton>
+#include <QtGui/QItemSelectionModel>
+#include <QtGui/QItemSelection>
+#include <QtGui/QComboBox>
+#include <QtGui/QLineEdit>
+#include <QtGui/QCheckBox>
+#include <QtGui/QRegExpValidator>
+#include <QtGui/QLabel>
+#include <QtGui/QSpacerItem>
+#include <QtGui/QMenu>
+#include <QtGui/QAction>
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal {
+    // PromotionParameters
+    struct PromotionParameters {
+        QString m_baseClass;
+        QString m_className;
+        QString m_includeFile;
+    };
+
+    //  NewPromotedClassPanel
+    NewPromotedClassPanel::NewPromotedClassPanel(const QStringList &baseClasses,
+                                                   int selectedBaseClass,
+                                                   QWidget *parent) :
+        QGroupBox(parent),
+        m_baseClassCombo(new  QComboBox),
+        m_classNameEdit(new QLineEdit),
+        m_includeFileEdit(new QLineEdit),
+        m_globalIncludeCheckBox(new QCheckBox),
+        m_addButton(new QPushButton(tr("Add")))
+    {
+        setTitle(tr("New Promoted Class"));
+        setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Maximum);
+        QHBoxLayout *hboxLayout = new QHBoxLayout(this);
+
+        m_classNameEdit->setValidator(new QRegExpValidator(QRegExp(QLatin1String("[_a-zA-Z:][:_a-zA-Z0-9]*")), m_classNameEdit));
+        connect(m_classNameEdit,   SIGNAL(textChanged(QString)), this, SLOT(slotNameChanged(QString)));
+        connect(m_includeFileEdit, SIGNAL(textChanged(QString)), this, SLOT(slotIncludeFileChanged(QString)));
+
+        m_baseClassCombo->setEditable(false);
+        m_baseClassCombo->addItems(baseClasses);
+        if (selectedBaseClass != -1)
+            m_baseClassCombo->setCurrentIndex(selectedBaseClass);
+
+        // Grid
+        QFormLayout *formLayout = new QFormLayout();
+        formLayout->addRow(tr("Base class name:"),     m_baseClassCombo);
+        formLayout->addRow(tr("Promoted class name:"), m_classNameEdit);
+        formLayout->addRow(tr("Header file:"),         m_includeFileEdit);
+        formLayout->addRow(tr("Global include"),       m_globalIncludeCheckBox);
+        hboxLayout->addLayout(formLayout);
+        hboxLayout->addItem(new QSpacerItem(15, 0, QSizePolicy::Fixed, QSizePolicy::Ignored));
+        // Button box
+        QVBoxLayout *buttonLayout = new QVBoxLayout();
+
+        m_addButton->setAutoDefault(false);
+        connect(m_addButton, SIGNAL(clicked()), this, SLOT(slotAdd()));
+        m_addButton->setEnabled(false);
+        buttonLayout->addWidget(m_addButton);
+
+        QPushButton *resetButton = new QPushButton(tr("Reset"));
+        resetButton->setAutoDefault(false);
+        connect(resetButton, SIGNAL(clicked()), this, SLOT(slotReset()));
+
+        buttonLayout->addWidget(resetButton);
+        buttonLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::Expanding));
+        hboxLayout->addLayout(buttonLayout);
+
+        enableButtons();
+    }
+
+    void NewPromotedClassPanel::slotAdd() {
+        bool ok = false;
+        emit newPromotedClass(promotionParameters(), &ok);
+        if (ok)
+            slotReset();
+    }
+
+    void NewPromotedClassPanel::slotReset() {
+        const QString empty;
+        m_classNameEdit->setText(empty);
+        m_includeFileEdit->setText(empty);
+        m_globalIncludeCheckBox->setCheckState(Qt::Unchecked);
+    }
+
+    void NewPromotedClassPanel::grabFocus() {
+        m_classNameEdit->setFocus(Qt::OtherFocusReason);
+    }
+
+    void NewPromotedClassPanel::slotNameChanged(const QString &className) {
+        // Suggest a name
+        if (!className.isEmpty()) {
+            QString suggestedHeader = className.toLower().replace(QLatin1String("::"), QString(QLatin1Char('_')));
+            suggestedHeader += QLatin1String(".h");
+
+            const bool blocked = m_includeFileEdit->blockSignals(true);
+            m_includeFileEdit->setText(suggestedHeader);
+            m_includeFileEdit->blockSignals(blocked);
+        }
+        enableButtons();
+    }
+
+    void NewPromotedClassPanel::slotIncludeFileChanged(const QString &){
+        enableButtons();
+    }
+
+    void NewPromotedClassPanel::enableButtons() {
+        const bool enabled = !m_classNameEdit->text().isEmpty() && !m_includeFileEdit->text().isEmpty();
+        m_addButton->setEnabled(enabled);
+        m_addButton->setDefault(enabled);
+    }
+
+    PromotionParameters NewPromotedClassPanel::promotionParameters() const {
+         PromotionParameters rc;
+         rc.m_baseClass = m_baseClassCombo->currentText();
+         rc.m_className = m_classNameEdit->text();
+         rc.m_includeFile = buildIncludeFile(m_includeFileEdit->text(),
+                                             m_globalIncludeCheckBox->checkState() == Qt::Checked ? IncludeGlobal : IncludeLocal);
+         return rc;
+     }
+
+    void NewPromotedClassPanel::chooseBaseClass(const QString &baseClass) {
+        const int index = m_baseClassCombo->findText (baseClass);
+        if (index != -1)
+            m_baseClassCombo->setCurrentIndex (index);
+    }
+
+    // --------------- QDesignerPromotionDialog
+    QDesignerPromotionDialog::QDesignerPromotionDialog(QDesignerFormEditorInterface *core,
+                                                       QWidget *parent,
+                                                       const QString &promotableWidgetClassName,
+                                                       QString *promoteTo) :
+        QDialog(parent),
+        m_mode(promotableWidgetClassName.isEmpty() || promoteTo == 0 ? ModeEdit : ModeEditChooseClass),
+        m_promotableWidgetClassName(promotableWidgetClassName),
+        m_core(core),
+        m_promoteTo(promoteTo),
+        m_promotion(core->promotion()),
+        m_model(new PromotionModel(core)),
+        m_treeView(new QTreeView),
+        m_buttonBox(0),
+        m_removeButton(new QPushButton(createIconSet(QString::fromUtf8("minus.png")), QString()))
+    {
+        m_buttonBox = createButtonBox();
+        setModal(true);
+        setWindowTitle(tr("Promoted Widgets"));
+        setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
+
+        QVBoxLayout *vboxLayout = new QVBoxLayout(this);
+
+        // tree view group
+        QGroupBox *treeViewGroup = new QGroupBox();
+        treeViewGroup->setTitle(tr("Promoted Classes"));
+        QVBoxLayout *treeViewVBoxLayout = new QVBoxLayout(treeViewGroup);
+        // tree view
+        m_treeView->setModel (m_model);
+        m_treeView->setMinimumWidth(450);
+        m_treeView->setContextMenuPolicy(Qt::CustomContextMenu);
+
+        connect(m_treeView->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
+                this, SLOT(slotSelectionChanged(QItemSelection, QItemSelection)));
+
+        connect(m_treeView, SIGNAL(customContextMenuRequested(QPoint)),
+                this, SLOT(slotTreeViewContextMenu(QPoint)));
+
+        QHeaderView *headerView = m_treeView->header();
+        headerView->setResizeMode(QHeaderView::ResizeToContents);
+        treeViewVBoxLayout->addWidget(m_treeView);
+        // remove button
+        QHBoxLayout *hboxLayout = new QHBoxLayout();
+        hboxLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Ignored));
+
+        m_removeButton->setAutoDefault(false);
+        connect(m_removeButton, SIGNAL(clicked()), this, SLOT(slotRemove()));
+        m_removeButton->setEnabled(false);
+        hboxLayout->addWidget(m_removeButton);
+        treeViewVBoxLayout->addLayout(hboxLayout);
+        vboxLayout->addWidget(treeViewGroup);
+        // Create new panel: Try to be smart and preselect a base class. Default to QFrame
+        const QStringList &baseClassNameList = baseClassNames(m_promotion);
+        int preselectedBaseClass = -1;
+        if (m_mode == ModeEditChooseClass) {
+            preselectedBaseClass = baseClassNameList.indexOf(m_promotableWidgetClassName);
+        }
+        if (preselectedBaseClass == -1)
+            preselectedBaseClass = baseClassNameList.indexOf(QLatin1String("QFrame"));
+
+        NewPromotedClassPanel *newPromotedClassPanel = new NewPromotedClassPanel(baseClassNameList, preselectedBaseClass);
+        connect(newPromotedClassPanel, SIGNAL(newPromotedClass(PromotionParameters, bool *)), this, SLOT(slotNewPromotedClass(PromotionParameters, bool *)));
+        connect(this, SIGNAL(selectedBaseClassChanged(QString)),
+                newPromotedClassPanel, SLOT(chooseBaseClass(QString)));
+        vboxLayout->addWidget(newPromotedClassPanel);
+        // button box
+        vboxLayout->addWidget(m_buttonBox);
+        // connect model
+        connect(m_model, SIGNAL(includeFileChanged(QDesignerWidgetDataBaseItemInterface*, QString)),
+                this, SLOT(slotIncludeFileChanged(QDesignerWidgetDataBaseItemInterface*, QString)));
+
+        connect(m_model, SIGNAL(classNameChanged(QDesignerWidgetDataBaseItemInterface*, QString)),
+                this, SLOT(slotClassNameChanged(QDesignerWidgetDataBaseItemInterface*, QString)));
+
+        // focus
+        if (m_mode == ModeEditChooseClass)
+            newPromotedClassPanel->grabFocus();
+
+        slotUpdateFromWidgetDatabase();
+    }
+
+    QDialogButtonBox *QDesignerPromotionDialog::createButtonBox() {
+        QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Close);
+
+        connect(buttonBox , SIGNAL(accepted()), this, SLOT(slotAcceptPromoteTo()));
+        buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Promote"));
+        buttonBox->button(QDialogButtonBox::Ok)->setEnabled(false);
+
+        connect(buttonBox , SIGNAL(rejected()), this, SLOT(reject()));
+        return buttonBox;
+    }
+
+    void QDesignerPromotionDialog::slotUpdateFromWidgetDatabase() {
+        m_model->updateFromWidgetDatabase();
+        m_treeView->expandAll();
+        m_removeButton->setEnabled(false);
+    }
+
+    void QDesignerPromotionDialog::delayedUpdateFromWidgetDatabase() {
+        QTimer::singleShot(0, this, SLOT(slotUpdateFromWidgetDatabase()));
+    }
+
+    const QStringList &QDesignerPromotionDialog::baseClassNames(const QDesignerPromotionInterface *promotion) {
+        typedef QList<QDesignerWidgetDataBaseItemInterface *> WidgetDataBaseItemList;
+        static QStringList rc;
+        if (rc.empty()) {
+            // Convert the item list into a string list.
+            const WidgetDataBaseItemList dbItems =  promotion->promotionBaseClasses();
+            const WidgetDataBaseItemList::const_iterator cend =  dbItems.constEnd();
+            for (WidgetDataBaseItemList::const_iterator it = dbItems.constBegin() ; it != cend; ++it) {
+                rc.push_back( (*it)->name());
+            }
+        }
+        return rc;
+    }
+
+    void  QDesignerPromotionDialog::slotAcceptPromoteTo() {
+        Q_ASSERT(m_mode == ModeEditChooseClass);
+        unsigned flags;
+        // Ok pressed: Promote to selected class
+        if (QDesignerWidgetDataBaseItemInterface *dbItem = databaseItemAt(m_treeView->selectionModel()->selection(), flags)) {
+            if (flags & CanPromote) {
+                *m_promoteTo = dbItem ->name();
+                accept();
+            }
+        }
+    }
+
+    void QDesignerPromotionDialog::slotRemove() {
+        unsigned flags;
+        QDesignerWidgetDataBaseItemInterface *dbItem = databaseItemAt(m_treeView->selectionModel()->selection(), flags);
+        if (!dbItem || (flags & Referenced))
+            return;
+
+        QString errorMessage;
+        if (m_promotion->removePromotedClass(dbItem->name(), &errorMessage)) {
+            slotUpdateFromWidgetDatabase();
+        } else {
+            displayError(errorMessage);
+        }
+    }
+
+    void QDesignerPromotionDialog::slotSelectionChanged(const QItemSelection &selected, const QItemSelection &) {
+        // Enable deleting non-referenced items
+        unsigned flags;
+        const QDesignerWidgetDataBaseItemInterface *dbItem = databaseItemAt(selected, flags);
+        m_removeButton->setEnabled(dbItem && !(flags & Referenced));
+        // In choose mode, can we promote to the class?
+        if (m_mode == ModeEditChooseClass) {
+            const bool enablePromoted = flags & CanPromote;
+            m_buttonBox->button(QDialogButtonBox::Ok)->setEnabled(enablePromoted);
+            m_buttonBox->button(QDialogButtonBox::Ok)->setDefault(enablePromoted);
+        }
+        // different base?
+        if (dbItem) {
+            const QString baseClass = dbItem->extends();
+            if (baseClass !=  m_lastSelectedBaseClass) {
+                m_lastSelectedBaseClass = baseClass;
+                emit selectedBaseClassChanged(m_lastSelectedBaseClass);
+            }
+        }
+    }
+
+    QDesignerWidgetDataBaseItemInterface *QDesignerPromotionDialog::databaseItemAt(const QItemSelection &selected, unsigned &flags) const {
+        flags = 0;
+        const QModelIndexList indexes = selected.indexes();
+        if (indexes.empty())
+            return 0;
+
+        bool referenced;
+        QDesignerWidgetDataBaseItemInterface *dbItem = m_model->databaseItemAt(indexes.front(), &referenced);
+
+        if (dbItem) {
+            if (referenced)
+                flags |= Referenced;
+            // In choose mode, can we promote to the class?
+            if (m_mode == ModeEditChooseClass &&  dbItem && dbItem->isPromoted() && dbItem->extends() ==  m_promotableWidgetClassName)
+                flags |= CanPromote;
+
+        }
+        return dbItem;
+    }
+
+    void QDesignerPromotionDialog::slotNewPromotedClass(const PromotionParameters &p, bool *ok) {
+        QString  errorMessage;
+        *ok = m_promotion->addPromotedClass(p.m_baseClass, p.m_className, p.m_includeFile, &errorMessage);
+        if (*ok) {
+            // update and select
+            slotUpdateFromWidgetDatabase();
+            const QModelIndex newClassIndex = m_model->indexOfClass(p.m_className);
+            if (newClassIndex.isValid()) {
+                m_treeView->selectionModel()->select(newClassIndex, QItemSelectionModel::SelectCurrent|QItemSelectionModel::Rows);
+            }
+        } else {
+            displayError(errorMessage);
+        }
+    }
+
+    void QDesignerPromotionDialog::slotIncludeFileChanged(QDesignerWidgetDataBaseItemInterface *dbItem, const QString &includeFile) {
+        if (includeFile.isEmpty()) {
+            delayedUpdateFromWidgetDatabase();
+            return;
+        }
+
+        if (dbItem->includeFile() == includeFile)
+            return;
+
+        QString errorMessage;
+        if (!m_promotion->setPromotedClassIncludeFile(dbItem->name(), includeFile, &errorMessage)) {
+            displayError(errorMessage);
+            delayedUpdateFromWidgetDatabase();
+        }
+    }
+
+    void  QDesignerPromotionDialog::slotClassNameChanged(QDesignerWidgetDataBaseItemInterface *dbItem, const QString &newName) {
+        if (newName.isEmpty()) {
+            delayedUpdateFromWidgetDatabase();
+            return;
+        }
+        const QString oldName = dbItem->name();
+        if (newName == oldName)
+            return;
+
+        QString errorMessage;
+        if (!m_promotion->changePromotedClassName(oldName , newName, &errorMessage)) {
+            displayError(errorMessage);
+            delayedUpdateFromWidgetDatabase();
+        }
+    }
+
+    void QDesignerPromotionDialog::slotTreeViewContextMenu(const QPoint &pos) {
+        unsigned flags;
+        const QDesignerWidgetDataBaseItemInterface *dbItem = databaseItemAt(m_treeView->selectionModel()->selection(), flags);
+        if (!dbItem)
+            return;
+
+        QMenu menu;
+        QAction *signalSlotAction = menu.addAction(tr("Change signals/slots..."));
+        connect(signalSlotAction, SIGNAL(triggered()), this, SLOT(slotEditSignalsSlots()));
+
+        menu.exec(m_treeView->viewport()->mapToGlobal(pos));
+    }
+
+    void  QDesignerPromotionDialog::slotEditSignalsSlots() {
+        unsigned flags;
+        const QDesignerWidgetDataBaseItemInterface *dbItem = databaseItemAt(m_treeView->selectionModel()->selection(), flags);
+        if (!dbItem)
+            return;
+
+        SignalSlotDialog::editPromotedClass(m_core, dbItem->name(), this);
+    }
+
+    void QDesignerPromotionDialog::displayError(const QString &message) {
+        m_core->dialogGui()->message(this, QDesignerDialogGuiInterface::PromotionErrorMessage, QMessageBox::Warning,
+                                     tr("%1 - Error").arg(windowTitle()), message,  QMessageBox::Close);
+    }
+} // namespace qdesigner_internal
+
+QT_END_NAMESPACE