Utils: Make wizard pages derive from Utils::WizardPage

Utils::WizardPage has a bit of helper code to the Utils::Wizard to
query registered fields later on. Without this code it will print
warnings whenever something tries to read a field that does not
exist.

Make the wizard pages defined in Utils export some fields.

Change-Id: I907be327a8b1b8691f90773470630582503d294a
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/libs/utils/wizardpage.cpp

@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#include "wizardpage.h"
+
+#include "wizard.h"
+
+/*! \class Utils::WizardPage
+
+  \brief QWizardPage with a couple of improvements
+
+  Adds a way to register fields so that a Utils::Wizard can check
+  whether those fields are actually defined and a new method
+  that is called once the page was added to the wizard.
+*/
+
+namespace Utils {
+
+WizardPage::WizardPage(QWidget *parent) : QWizardPage(parent)
+{ }
+
+void WizardPage::pageWasAdded()
+{
+    Wizard *wiz = qobject_cast<Wizard *>(wizard());
+    if (!wiz)
+        return;
+
+    for (auto i = m_toRegister.constBegin(); i != m_toRegister.constEnd(); ++i)
+        wiz->registerFieldName(*i);
+
+    m_toRegister.clear();
+}
+
+void WizardPage::registerFieldWithName(const QString &name, QWidget *widget,
+                                       const char *property, const char *changedSignal)
+{
+    Wizard *wiz = qobject_cast<Wizard *>(wizard());
+    if (wiz)
+        wiz->registerFieldName(name);
+    else
+        m_toRegister.insert(name);
+
+    registerField(name, widget, property, changedSignal);
+}
+
+} // namespace Utils