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Diffstat (limited to 'src/quickcontrols2impl/qquickattachedobject.cpp')
-rw-r--r-- | src/quickcontrols2impl/qquickattachedobject.cpp | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/src/quickcontrols2impl/qquickattachedobject.cpp b/src/quickcontrols2impl/qquickattachedobject.cpp deleted file mode 100644 index 722f22f9..00000000 --- a/src/quickcontrols2impl/qquickattachedobject.cpp +++ /dev/null @@ -1,274 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL3$ -** 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 http://www.qt.io/terms-conditions. For further -** information use the contact form at http://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.LGPLv3 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.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 later 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 2.0 requirements will be -** met: http://www.gnu.org/licenses/gpl-2.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qquickattachedobject_p.h" - -#include <QtCore/qpointer.h> -#include <QtQuick/qquickwindow.h> -#include <QtQuick/private/qquickitem_p.h> -#include <QtQuick/private/qquickitemchangelistener_p.h> -#include <QtQuickTemplates2/private/qquickpopup_p.h> - -QT_BEGIN_NAMESPACE - -static QQuickAttachedObject *attachedObject(const QMetaObject *type, QObject *object, bool create = false) -{ - if (!object) - return nullptr; - auto func = qmlAttachedPropertiesFunction(object, type); - return qobject_cast<QQuickAttachedObject *>(qmlAttachedPropertiesObject(object, func, create)); -} - -static QQuickAttachedObject *findAttachedParent(const QMetaObject *type, QObject *object) -{ - QQuickItem *item = qobject_cast<QQuickItem *>(object); - if (item) { - // lookup parent items and popups - QQuickItem *parent = item->parentItem(); - while (parent) { - QQuickAttachedObject *attached = attachedObject(type, parent); - if (attached) - return attached; - - QQuickPopup *popup = qobject_cast<QQuickPopup *>(parent->parent()); - if (popup) - return attachedObject(type, popup); - - parent = parent->parentItem(); - } - - // fallback to item's window - QQuickAttachedObject *attached = attachedObject(type, item->window()); - if (attached) - return attached; - } else { - // lookup popup's window - QQuickPopup *popup = qobject_cast<QQuickPopup *>(object); - if (popup) - return attachedObject(type, popup->popupItem()->window()); - } - - // lookup parent window - QQuickWindow *window = qobject_cast<QQuickWindow *>(object); - if (window) { - QQuickWindow *parentWindow = qobject_cast<QQuickWindow *>(window->parent()); - if (parentWindow) { - QQuickAttachedObject *attached = attachedObject(type, window); - if (attached) - return attached; - } - } - - // fallback to engine (global) - if (object) { - QQmlEngine *engine = qmlEngine(object); - if (engine) { - QByteArray name = QByteArray("_q_") + type->className(); - QQuickAttachedObject *attached = engine->property(name).value<QQuickAttachedObject *>(); - if (!attached) { - attached = attachedObject(type, engine, true); - engine->setProperty(name, QVariant::fromValue(attached)); - } - return attached; - } - } - - return nullptr; -} - -static QList<QQuickAttachedObject *> findAttachedChildren(const QMetaObject *type, QObject *object) -{ - QList<QQuickAttachedObject *> children; - - QQuickItem *item = qobject_cast<QQuickItem *>(object); - if (!item) { - QQuickWindow *window = qobject_cast<QQuickWindow *>(object); - if (window) { - item = window->contentItem(); - - const auto &windowChildren = window->children(); - for (QObject *child : windowChildren) { - QQuickWindow *childWindow = qobject_cast<QQuickWindow *>(child); - if (childWindow) { - QQuickAttachedObject *attached = attachedObject(type, childWindow); - if (attached) - children += attached; - } - } - } - } - - if (item) { - const auto childItems = item->childItems(); - for (QQuickItem *child : childItems) { - QQuickAttachedObject *attached = attachedObject(type, child); - if (attached) - children += attached; - else - children += findAttachedChildren(type, child); - } - } - - return children; -} - -static QQuickItem *findAttachedItem(QObject *parent) -{ - QQuickItem *item = qobject_cast<QQuickItem *>(parent); - if (!item) { - QQuickPopup *popup = qobject_cast<QQuickPopup *>(parent); - if (popup) - item = popup->popupItem(); - } - return item; -} - -class QQuickAttachedObjectPrivate : public QObjectPrivate, public QQuickItemChangeListener -{ - Q_DECLARE_PUBLIC(QQuickAttachedObject) - -public: - static QQuickAttachedObjectPrivate *get(QQuickAttachedObject *attachedObject) - { - return attachedObject->d_func(); - } - - void attachTo(QObject *object); - void detachFrom(QObject *object); - - void itemWindowChanged(QQuickWindow *window); - void itemParentChanged(QQuickItem *item, QQuickItem *parent) override; - - QList<QQuickAttachedObject *> attachedChildren; - QPointer<QQuickAttachedObject> attachedParent; -}; - -void QQuickAttachedObjectPrivate::attachTo(QObject *object) -{ - QQuickItem *item = findAttachedItem(object); - if (item) { - connect(item, &QQuickItem::windowChanged, this, &QQuickAttachedObjectPrivate::itemWindowChanged); - QQuickItemPrivate::get(item)->addItemChangeListener(this, QQuickItemPrivate::Parent); - } -} - -void QQuickAttachedObjectPrivate::detachFrom(QObject *object) -{ - QQuickItem *item = findAttachedItem(object); - if (item) { - disconnect(item, &QQuickItem::windowChanged, this, &QQuickAttachedObjectPrivate::itemWindowChanged); - QQuickItemPrivate::get(item)->removeItemChangeListener(this, QQuickItemPrivate::Parent); - } -} - -void QQuickAttachedObjectPrivate::itemWindowChanged(QQuickWindow *window) -{ - Q_Q(QQuickAttachedObject); - QQuickAttachedObject *attachedParent = nullptr; - QQuickItem *item = qobject_cast<QQuickItem *>(q->sender()); - if (item) - attachedParent = findAttachedParent(q->metaObject(), item); - if (!attachedParent) - attachedParent = attachedObject(q->metaObject(), window); - q->setAttachedParent(attachedParent); -} - -void QQuickAttachedObjectPrivate::itemParentChanged(QQuickItem *item, QQuickItem *parent) -{ - Q_Q(QQuickAttachedObject); - Q_UNUSED(parent); - q->setAttachedParent(findAttachedParent(q->metaObject(), item)); -} - -QQuickAttachedObject::QQuickAttachedObject(QObject *parent) - : QObject(*(new QQuickAttachedObjectPrivate), parent) -{ - Q_D(QQuickAttachedObject); - d->attachTo(parent); -} - -QQuickAttachedObject::~QQuickAttachedObject() -{ - Q_D(QQuickAttachedObject); - d->detachFrom(parent()); - setAttachedParent(nullptr); -} - -QList<QQuickAttachedObject *> QQuickAttachedObject::attachedChildren() const -{ - Q_D(const QQuickAttachedObject); - return d->attachedChildren; -} - -QQuickAttachedObject *QQuickAttachedObject::attachedParent() const -{ - Q_D(const QQuickAttachedObject); - return d->attachedParent; -} - -void QQuickAttachedObject::setAttachedParent(QQuickAttachedObject *parent) -{ - Q_D(QQuickAttachedObject); - if (d->attachedParent == parent) - return; - - QQuickAttachedObject *oldParent = d->attachedParent; - if (d->attachedParent) - QQuickAttachedObjectPrivate::get(d->attachedParent)->attachedChildren.removeOne(this); - d->attachedParent = parent; - if (parent) - QQuickAttachedObjectPrivate::get(parent)->attachedChildren.append(this); - attachedParentChange(parent, oldParent); -} - -void QQuickAttachedObject::init() -{ - QQuickAttachedObject *attachedParent = findAttachedParent(metaObject(), parent()); - if (attachedParent) - setAttachedParent(attachedParent); - - const QList<QQuickAttachedObject *> attachedChildren = findAttachedChildren(metaObject(), parent()); - for (QQuickAttachedObject *child : attachedChildren) - child->setAttachedParent(this); -} - -void QQuickAttachedObject::attachedParentChange(QQuickAttachedObject *newParent, QQuickAttachedObject *oldParent) -{ - Q_UNUSED(newParent); - Q_UNUSED(oldParent); -} - -QT_END_NAMESPACE |