mirror of
https://github.com/Nheko-Reborn/nheko.git
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140 lines
3.5 KiB
C++
140 lines
3.5 KiB
C++
// SPDX-FileCopyrightText: Nheko Contributors
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include "DelegateChooser.h"
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#include "Logging.h"
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// uses private API, which moved between versions
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#include <QQmlEngine>
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#include <QtGlobal>
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QQmlComponent *
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DelegateChoice::delegate() const
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{
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return delegate_;
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}
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void
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DelegateChoice::setDelegate(QQmlComponent *delegate)
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{
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if (delegate != delegate_) {
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delegate_ = delegate;
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emit delegateChanged();
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emit changed();
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}
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}
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QVariant
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DelegateChoice::roleValue() const
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{
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return roleValue_;
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}
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void
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DelegateChoice::setRoleValue(const QVariant &value)
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{
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if (value != roleValue_) {
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roleValue_ = value;
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emit roleValueChanged();
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emit changed();
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}
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}
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QVariant
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DelegateChooser::roleValue() const
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{
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return roleValue_;
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}
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void
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DelegateChooser::setRoleValue(const QVariant &value)
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{
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if (value != roleValue_) {
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roleValue_ = value;
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if (isComponentComplete())
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recalcChild();
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emit roleValueChanged();
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}
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}
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QQmlListProperty<DelegateChoice>
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DelegateChooser::choices()
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{
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return QQmlListProperty<DelegateChoice>(this,
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this,
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&DelegateChooser::appendChoice,
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&DelegateChooser::choiceCount,
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&DelegateChooser::choice,
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&DelegateChooser::clearChoices);
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}
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void
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DelegateChooser::appendChoice(QQmlListProperty<DelegateChoice> *p, DelegateChoice *c)
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{
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DelegateChooser *dc = static_cast<DelegateChooser *>(p->object);
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dc->choices_.append(c);
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}
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qsizetype
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DelegateChooser::choiceCount(QQmlListProperty<DelegateChoice> *p)
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{
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return static_cast<DelegateChooser *>(p->object)->choices_.count();
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}
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DelegateChoice *
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DelegateChooser::choice(QQmlListProperty<DelegateChoice> *p, qsizetype index)
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{
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return static_cast<DelegateChooser *>(p->object)->choices_.at(index);
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}
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void
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DelegateChooser::clearChoices(QQmlListProperty<DelegateChoice> *p)
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{
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static_cast<DelegateChooser *>(p->object)->choices_.clear();
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}
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void
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DelegateChooser::recalcChild()
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{
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for (const auto choice : qAsConst(choices_)) {
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const auto &choiceValue = choice->roleValueRef();
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if (choiceValue == roleValue_ || (!choiceValue.isValid() && !roleValue_.isValid())) {
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if (child_) {
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child_->setParentItem(nullptr);
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child_ = nullptr;
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}
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choice->delegate()->create(incubator, QQmlEngine::contextForObject(this));
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return;
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}
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}
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}
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void
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DelegateChooser::componentComplete()
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{
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QQuickItem::componentComplete();
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recalcChild();
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}
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void
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DelegateChooser::DelegateIncubator::statusChanged(QQmlIncubator::Status status)
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{
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if (status == QQmlIncubator::Ready) {
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chooser.child_ = qobject_cast<QQuickItem *>(object());
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if (chooser.child_ == nullptr) {
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nhlog::ui()->error("Delegate has to be derived of Item!");
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return;
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}
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chooser.child_->setParentItem(&chooser);
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QQmlEngine::setObjectOwnership(chooser.child_,
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QQmlEngine::ObjectOwnership::JavaScriptOwnership);
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emit chooser.childChanged();
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} else if (status == QQmlIncubator::Error) {
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auto errors_ = errors();
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for (const auto &e : qAsConst(errors_))
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nhlog::ui()->error("Error instantiating delegate: {}", e.toString().toStdString());
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}
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}
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