void UIWidget::addChild(const UIWidgetPtr& child)
{
if(!child) {
logWarning("attempt to add a null child into a UIWidget");
return;
}
if(hasChild(child)) {
logWarning("attempt to add a child again into a UIWidget");
return;
}
m_children.push_back(child);
child->setParent(asUIWidget());
// create default layout
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
}
void UIWidget::removeChild(UIWidgetPtr child)
{
// remove from children list
if(hasChild(child)) {
// defocus if needed
bool focusAnother = false;
if(m_focusedChild == child) {
focusChild(nullptr, Fw::ActiveFocusReason);
focusAnother = true;
}
if(isChildLocked(child))
unlockChild(child);
auto it = std::find(m_children.begin(), m_children.end(), child);
m_children.erase(it);
// reset child parent
assert(child->getParent() == static_self_cast<UIWidget>());
child->setParent(nullptr);
m_layout->removeWidget(child);
// update child states
child->updateStates();
updateChildrenIndexStates();
if(m_autoFocusPolicy != Fw::AutoFocusNone && focusAnother && !m_focusedChild)
focusPreviousChild(Fw::ActiveFocusReason, true);
g_ui.onWidgetDisappear(child);
} else
g_logger.traceError("attempt to remove an unknown child from a UIWidget");
}
void UIWidget::removeChild(const UIWidgetPtr& child)
{
// remove from children list
if(hasChild(child)) {
// defocus if needed
bool focusAnother = false;
if(m_focusedChild == child) {
focusChild(nullptr, Fw::ActiveFocusReason);
focusAnother = true;
}
if(isChildLocked(child))
unlockChild(child);
auto it = std::find(m_children.begin(), m_children.end(), child);
m_children.erase(it);
// reset child parent
assert(child->getParent() == asUIWidget());
child->setParent(nullptr);
m_layout->removeWidget(child);
// update child states
child->updateStates();
updateChildrenIndexStates();
if(focusAnother && !m_focusedChild)
focusPreviousChild(Fw::ActiveFocusReason);
} else
logError("Attempt to remove an unknown child from a UIWidget");
}
void UIWidget::insertChild(int index, const UIWidgetPtr& child)
{
if(!child) {
logWarning("attempt to insert a null child into a UIWidget");
return;
}
if(hasChild(child)) {
logWarning("attempt to insert a child again into a UIWidget");
return;
}
index = index <= 0 ? (m_children.size() + index) : index-1;
assert(index >= 0 && (uint)index <= m_children.size());
// retrieve child by index
auto it = m_children.begin() + index;
m_children.insert(it, child);
child->setParent(asUIWidget());
// create default layout if needed
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
}
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::addChild(const UIWidgetPtr& child)
{
if(!child) {
g_logger.traceWarning("attempt to add a null child into a UIWidget");
return;
}
if(child->isDestroyed()) {
g_logger.traceWarning("attemp to add a destroyed child into a UIWidget");
return;
}
if(hasChild(child)) {
g_logger.traceWarning("attempt to add a child again into a UIWidget");
return;
}
UIWidgetPtr oldLastChild = getLastChild();
m_children.push_back(child);
child->setParent(static_self_cast<UIWidget>());
// create default layout
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(static_self_cast<UIWidget>()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
// update old child index states
if(oldLastChild) {
oldLastChild->updateState(Fw::MiddleState);
oldLastChild->updateState(Fw::LastState);
}
g_ui.onWidgetAppear(child);
}
void UIWidget::insertChild(int index, const UIWidgetPtr& child)
{
if(!child) {
g_logger.traceWarning("attempt to insert a null child into a UIWidget");
return;
}
if(hasChild(child)) {
g_logger.traceWarning("attempt to insert a child again into a UIWidget");
return;
}
index = index <= 0 ? (m_children.size() + index) : index-1;
if(!(index >= 0 && (uint)index <= m_children.size())) {
//g_logger.traceWarning("attempt to insert a child UIWidget into an invalid index, using nearest index...");
index = std::min(std::max(index, 0), (int)m_children.size());
}
// retrieve child by index
auto it = m_children.begin() + index;
m_children.insert(it, child);
child->setParent(static_self_cast<UIWidget>());
// create default layout if needed
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(static_self_cast<UIWidget>()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
g_ui.onWidgetAppear(child);
}
