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Diffstat (limited to 'src/imports/statemachine/childrenprivate.h')
| -rw-r--r-- | src/imports/statemachine/childrenprivate.h | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/src/imports/statemachine/childrenprivate.h b/src/imports/statemachine/childrenprivate.h deleted file mode 100644 index 2dcecd6531..0000000000 --- a/src/imports/statemachine/childrenprivate.h +++ /dev/null @@ -1,188 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 Ford Motor Company -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/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 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QQMLCHILDRENPRIVATE_H -#define QQMLCHILDRENPRIVATE_H - -#include <QAbstractState> -#include <QAbstractTransition> -#include <QStateMachine> -#include <QQmlInfo> -#include <QQmlListProperty> - -enum class ChildrenMode { - None = 0x0, - State = 0x1, - Transition = 0x2, - StateOrTransition = State | Transition -}; - -template<typename T> -static T *parentObject(QQmlListProperty<QObject> *prop) { return static_cast<T *>(prop->object); } - -template<class T, ChildrenMode Mode> -struct ParentHandler -{ - static bool unparentItem(QQmlListProperty<QObject> *prop, QObject *oldItem); - static bool parentItem(QQmlListProperty<QObject> *prop, QObject *item); -}; - -template<class T> -struct ParentHandler<T, ChildrenMode::None> -{ - static bool unparentItem(QQmlListProperty<QObject> *, QObject *) { return true; } - static bool parentItem(QQmlListProperty<QObject> *, QObject *) { return true; } -}; - -template<class T> -struct ParentHandler<T, ChildrenMode::State> -{ - static bool parentItem(QQmlListProperty<QObject> *prop, QObject *item) - { - if (QAbstractState *state = qobject_cast<QAbstractState *>(item)) { - state->setParent(parentObject<T>(prop)); - return true; - } - return false; - } - - static bool unparentItem(QQmlListProperty<QObject> *, QObject *oldItem) - { - if (QAbstractState *state = qobject_cast<QAbstractState *>(oldItem)) { - state->setParent(nullptr); - return true; - } - return false; - } -}; - -template<class T> -struct ParentHandler<T, ChildrenMode::Transition> -{ - static bool parentItem(QQmlListProperty<QObject> *prop, QObject *item) - { - if (QAbstractTransition *trans = qobject_cast<QAbstractTransition *>(item)) { - parentObject<T>(prop)->addTransition(trans); - return true; - } - return false; - } - - static bool unparentItem(QQmlListProperty<QObject> *prop, QObject *oldItem) - { - if (QAbstractTransition *trans = qobject_cast<QAbstractTransition *>(oldItem)) { - parentObject<T>(prop)->removeTransition(trans); - return true; - } - return false; - } -}; - -template<class T> -struct ParentHandler<T, ChildrenMode::StateOrTransition> -{ - static bool parentItem(QQmlListProperty<QObject> *prop, QObject *oldItem) - { - return ParentHandler<T, ChildrenMode::State>::parentItem(prop, oldItem) - || ParentHandler<T, ChildrenMode::Transition>::parentItem(prop, oldItem); - } - - static bool unparentItem(QQmlListProperty<QObject> *prop, QObject *oldItem) - { - return ParentHandler<T, ChildrenMode::State>::unparentItem(prop, oldItem) - || ParentHandler<T, ChildrenMode::Transition>::unparentItem(prop, oldItem); - } -}; - -template <class T, ChildrenMode Mode> -class ChildrenPrivate -{ -public: - static void append(QQmlListProperty<QObject> *prop, QObject *item) - { - Handler::parentItem(prop, item); - static_cast<Self *>(prop->data)->children.append(item); - emit parentObject<T>(prop)->childrenChanged(); - } - - static int count(QQmlListProperty<QObject> *prop) - { - return static_cast<Self *>(prop->data)->children.count(); - } - - static QObject *at(QQmlListProperty<QObject> *prop, int index) - { - return static_cast<Self *>(prop->data)->children.at(index); - } - - static void clear(QQmlListProperty<QObject> *prop) - { - auto &children = static_cast<Self *>(prop->data)->children; - for (QObject *oldItem : qAsConst(children)) - Handler::unparentItem(prop, oldItem); - - children.clear(); - emit parentObject<T>(prop)->childrenChanged(); - } - - static void replace(QQmlListProperty<QObject> *prop, int index, QObject *item) - { - auto &children = static_cast<Self *>(prop->data)->children; - - Handler::unparentItem(prop, children.at(index)); - Handler::parentItem(prop, item); - - children.replace(index, item); - emit parentObject<T>(prop)->childrenChanged(); - } - - static void removeLast(QQmlListProperty<QObject> *prop) - { - Handler::unparentItem(prop, static_cast<Self *>(prop->data)->children.takeLast()); - emit parentObject<T>(prop)->childrenChanged(); - } - -private: - using Self = ChildrenPrivate<T, Mode>; - using Handler = ParentHandler<T, Mode>; - - QList<QObject *> children; -}; - -#endif |