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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 ActiveQt framework of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qaxselect.h"

#ifndef QT_NO_WIN_ACTIVEQT

#include <qt_windows.h>

QT_BEGIN_NAMESPACE

class ControlList : public QAbstractListModel
{
public:
    ControlList(QObject *parent=0)
    : QAbstractListModel(parent) 
    {
        HKEY classes_key;
        QT_WA_INLINE(
            RegOpenKeyExW(HKEY_CLASSES_ROOT, L"CLSID", 0, KEY_READ, &classes_key),
            RegOpenKeyExA(HKEY_CLASSES_ROOT, "CLSID", 0, KEY_READ, &classes_key));
        if (!classes_key)
            return;

        DWORD index = 0;
        LONG result = 0;
        TCHAR buffer[256];
        DWORD szBuffer = sizeof(buffer);
        FILETIME ft;
        do {
            result = QT_WA_INLINE(
                RegEnumKeyExW(classes_key, index, (wchar_t*)&buffer, &szBuffer, 0, 0, 0, &ft),
                RegEnumKeyExA(classes_key, index, (char*)&buffer, &szBuffer, 0, 0, 0, &ft));
            szBuffer = sizeof(buffer);
            if (result == ERROR_SUCCESS) {
                HKEY sub_key;
                QString clsid = QT_WA_INLINE(QString::fromUtf16((ushort*)buffer), QString::fromLocal8Bit((char*)buffer));
                result = QT_WA_INLINE(
                    RegOpenKeyExW(classes_key, reinterpret_cast<const wchar_t *>(QString(clsid + "\\Control").utf16()), 0, KEY_READ, &sub_key),
                    RegOpenKeyA(classes_key, QString(clsid + QLatin1String("\\Control")).toLocal8Bit(), &sub_key));
                if (result == ERROR_SUCCESS) {
                    RegCloseKey(sub_key);
                    QT_WA_INLINE(
                        RegistryQueryValueW(classes_key, buffer, (LPBYTE)buffer, &szBuffer),
                        RegQueryValueA(classes_key, (char*)buffer, (char*)buffer, (LONG*)&szBuffer));
                    QString name = QT_WA_INLINE(QString::fromUtf16((ushort*)buffer, szBuffer / sizeof(TCHAR)) , QString::fromLocal8Bit((char*)buffer, szBuffer));

                    controls << name;
                    clsids.insert(name, clsid);
                }
                result = ERROR_SUCCESS;
            }
            szBuffer = sizeof(buffer);
            ++index;
        } while (result == ERROR_SUCCESS);
        RegCloseKey(classes_key);
        controls.sort();
    }

    LONG RegistryQueryValueW(HKEY hKey, LPCWSTR lpSubKey, LPBYTE lpData, LPDWORD lpcbData)
    {
        LONG ret = ERROR_FILE_NOT_FOUND;
        HKEY hSubKey = NULL;
        RegOpenKeyExW(hKey, lpSubKey, 0, KEY_READ, &hSubKey);
        if (hSubKey) {
            ret = RegQueryValueExW(hSubKey, 0, 0, 0, lpData, lpcbData);
            RegCloseKey(hSubKey);
        }
        return ret;
    }

    int rowCount(const QModelIndex & = QModelIndex()) const { return controls.count(); }
    QVariant data(const QModelIndex &index, int role) const;
    
private:
    QStringList controls;
    QMap<QString, QString> clsids;
};

QVariant ControlList::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();

    if (role == Qt::DisplayRole)
        return controls.at(index.row());
    if (role == Qt::UserRole)
        return clsids.value(controls.at(index.row()));

    return QVariant();
}

QAxSelect::QAxSelect(QWidget *parent, Qt::WindowFlags f)
: QDialog(parent, f)
{
#ifndef QT_NO_CURSOR
    QApplication::setOverrideCursor(Qt::WaitCursor);
#endif

    setupUi(this);
    ActiveXList->setModel(new ControlList(this));
    connect(ActiveXList->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
        this, SLOT(on_ActiveXList_clicked(QModelIndex)));
#ifndef QT_NO_CURSOR
    QApplication::restoreOverrideCursor();
#endif
    ActiveXList->setFocus();

    connect(buttonOk, SIGNAL(clicked()), this, SLOT(accept()));
    connect(buttonCancel, SIGNAL(clicked()), this, SLOT(reject()));
}

void QAxSelect::on_ActiveXList_clicked(const QModelIndex &index)
{
    QVariant clsid = ActiveXList->model()->data(index, Qt::UserRole);
    ActiveX->setText(clsid.toString());
}

void QAxSelect::on_ActiveXList_doubleClicked(const QModelIndex &index)
{
    QVariant clsid = ActiveXList->model()->data(index, Qt::UserRole);
    ActiveX->setText(clsid.toString());

    accept();
}

QT_END_NAMESPACE
#endif // QT_NO_WIN_ACTIVEQT