Add JsonWizard

This is a generalization of the customwizard (using Json for its
configuration files since that is so easy to handle in Qt 5 and
since it is incompatible with the customwizard anyway).

It allows to define an arbitrary number of pages and generators to
generate the actual files.

Change-Id: I45a01cf7fb906701b627fa1471a898cad472f679
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.h

@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef JSONWIZARDFACTORY_H
+#define JSONWIZARDFACTORY_H
+
+#include "../projectexplorer_export.h"
+
+#include <coreplugin/iwizardfactory.h>
+
+#include <utils/fileutils.h>
+
+#include <QMap>
+
+QT_BEGIN_NAMESPACE
+class QDir;
+QT_END_NAMESPACE
+
+namespace ProjectExplorer {
+
+class JsonWizardFactory;
+class JsonWizardPageFactory;
+class JsonWizardGeneratorFactory;
+class ProjectExplorerPlugin;
+
+// Documentation inside.
+class PROJECTEXPLORER_EXPORT JsonWizardFactory : public Core::IWizardFactory
+{
+    Q_OBJECT
+
+public:
+    // Add search paths for wizard.json files. All subdirs are going to be checked.
+    static void addWizardPath(const Utils::FileName &path);
+
+    // actual interface of the wizard factory:
+    class Generator {
+    public:
+        bool isValid() const { return typeId.isValid(); }
+
+        Core::Id typeId;
+        QVariant data;
+    };
+
+    class Page {
+    public:
+        bool isValid() const { return typeId.isValid(); }
+        QString title;
+        QString subTitle;
+        QString shortTitle;
+        int index; // page index in the wizard
+        Core::Id typeId;
+        QVariant data;
+    };
+
+    static void registerPageFactory(JsonWizardPageFactory *factory);
+    static void registerGeneratorFactory(JsonWizardGeneratorFactory *factory);
+
+    ~JsonWizardFactory();
+
+    void runWizard(const QString &path, QWidget *parent, const QString &platform,
+                   const QVariantMap &variables);
+
+    static QList<QVariant> objectOrList(const QVariant &data, QString *errorMessage);
+    static QString localizedString(const QVariant &value);
+
+private:
+    // Create all wizards. As other plugins might register factories for derived
+    // classes. Called when the new file dialog is shown for the first time.
+    static QList<JsonWizardFactory *> createWizardFactories();
+    static JsonWizardFactory *createWizardFactory(const QVariantMap &data, const QDir &baseDir,
+                                                  QString *errorMessage);
+
+    static void setVerbose(int level);
+    static int verbose();
+
+    static void destroyAllFactories();
+    bool initialize(const QVariantMap &data, const QDir &baseDir, QString *errorMessage);
+
+    QString m_wizardDir;
+    QList<Generator> m_generators;
+
+    QList<Page> m_pages;
+    QMap<QString, QString> m_options;
+
+    Core::FeatureSet m_preferredFeatures;
+
+    static QList<Utils::FileName> m_searchPaths;
+    static int m_verbose;
+
+    friend class ProjectExplorerPlugin;
+};
+
+} //namespace ProjectExplorer
+
+#endif // JSONWIZARDFACTORY_H