dynamic_view_controller.cpp
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#include <escher/dynamic_view_controller.h>
#include <escher/app.h>
#include <assert.h>
DynamicViewController::DynamicViewController(Responder * parentResponder) :
ViewController(parentResponder),
m_view(nullptr)
{
}
DynamicViewController::~DynamicViewController() {
assert(m_view == nullptr);
}
View * DynamicViewController::view() {
loadViewIfNeeded();
return m_view;
}
void DynamicViewController::viewWillAppear() {
loadViewIfNeeded();
}
void DynamicViewController::viewDidDisappear() {
unloadViewIfNeeded();
}
void DynamicViewController::loadViewIfNeeded() {
if (m_view == nullptr) {
m_view = loadView();
assert(m_view != nullptr);
}
}
void DynamicViewController::unloadViewIfNeeded() {
if (m_view != nullptr) {
unloadView(m_view);
m_view = nullptr;
}
}