Method attachToWidget

MyGUIEngine/src/MyGUI_Widget.cpp:842–928

	}

	void Widget::attachToWidget(Widget* _parent, WidgetStyle _style, std::string_view _layer)
	{
		MYGUI_ASSERT(_parent, "parent must be valid");
		MYGUI_ASSERT(_parent != this, "cyclic attach (attaching to self)");

		// attach to client if widget have it
		if (_parent->getClientWidget())
			_parent = _parent->getClientWidget();

		Widget* parent = _parent;
		while (parent->getParent())
		{
			MYGUI_ASSERT(parent != this, "cyclic attach");
			parent = parent->getParent();
		}

		detachFromWidget();

		mWidgetStyle = _style;

		if (_style == WidgetStyle::Popup)
		{
			if (mParent == nullptr)
				Gui::getInstance()._unlinkChildWidget(this);
			else
				mParent->_unlinkChildWidget(this);

			mParent = _parent;
			mParent->_linkChildWidget(this);

			mCroppedParent = nullptr;

			if (!_layer.empty())
			{
				LayerManager::getInstance().attachToLayerNode(_layer, this);
			}
		}
		else if (_style == WidgetStyle::Child)
		{
			LayerManager::getInstance().detachFromLayer(this);

			if (mParent == nullptr)
				Gui::getInstance()._unlinkChildWidget(this);
			else
				mParent->_unlinkChildWidget(this);

			mParent = _parent;
			mParent->addChildItem(this);
			mParent->_linkChildWidget(this);

			mCroppedParent = _parent;
			mAbsolutePosition = _parent->getAbsolutePosition() + mCoord.point();

			for (auto& widget : mWidgetChild)
				widget->_updateAbsolutePoint();
			for (auto& widget : mWidgetChildSkin)
				widget->_updateAbsolutePoint();