void UIWidget::setLayout(const UILayoutPtr& layout)
{
if(!layout)
stdext::throw_exception("attempt to set a nil layout to a widget");
if(m_layout)
m_layout->disableUpdates();
layout->setParent(static_self_cast<UIWidget>());
layout->disableUpdates();
for(const UIWidgetPtr& child : m_children) {
if(m_layout)
m_layout->removeWidget(child);
layout->addWidget(child);
}
if(m_layout) {
m_layout->enableUpdates();
m_layout->setParent(nullptr);
m_layout->update();
}
layout->enableUpdates();
m_layout = layout;
}
void UIWidget::destroyChildren()
{
UILayoutPtr layout = getLayout();
if(layout)
layout->disableUpdates();
m_focusedChild = nullptr;
m_lockedChildren.clear();
while(!m_children.empty()) {
UIWidgetPtr child = m_children.front();
m_children.pop_front();
child->setParent(nullptr);
m_layout->removeWidget(child);
child->destroy();
}
layout->enableUpdates();
}
void UIWidget::setLayout(const UILayoutPtr& layout)
{
if(m_layout)
m_layout->disableUpdates();
layout->setParent(asUIWidget());
layout->disableUpdates();
for(const UIWidgetPtr& child : m_children) {
if(m_layout)
m_layout->removeWidget(child);
layout->addWidget(child);
}
if(m_layout) {
m_layout->enableUpdates();
m_layout->setParent(nullptr);
m_layout->update();
}
layout->enableUpdates();
m_layout = layout;
}