Solved
List Layout Callback not firing
I am trying to create a language selection menu. I have managed to inflate the list. However, the callback for element selection is not firing. Please advise. Following is my code.
#ifndef CONTAINER_MENU_HPP
#define CONTAINER_MENU_HPP
#include <gui_generated/containers/Container_MenuBase.hpp>
#include <texts/TextKeysAndLanguages.hpp>
class Container_Menu : public Container_MenuBase
{
public:
Container_Menu();
virtual ~Container_Menu() {}
virtual void setupListElement(TEXTS iconTextID, int index);
virtual void setAction(GenericCallback< Container_Menu& >& callback);
virtual void setSelection(int selected);
virtual int getIndex();
virtual void selectAction();
virtual void initialize();
protected:
int index = 0;
GenericCallback< Container_Menu& >* viewCallback;
};
#endif // CONTAINER_MENU_HPP#include <gui/containers/Container_Menu.hpp>
#include <touchgfx/Color.hpp>
Container_Menu::Container_Menu() : viewCallback(0)
{
}
void Container_Menu::initialize()
{
Container_MenuBase::initialize();
}
void Container_Menu::setupListElement(TEXTS iconTextID, int _index)
{
index = _index;
text_menu.setTypedText(TypedText(iconTextID));
text_menu.resizeToCurrentText();
invalidate();
}
void Container_Menu::setSelection(int selected)
{
bg_selected.setVisible(index == selected);
text_menu.setColor(index == selected? Color::getColorFrom24BitRGB(255, 255, 255) : Color::getColorFrom24BitRGB(0, 0, 0));
invalidate();
}
int Container_Menu::getIndex(){ return index; }
void Container_Menu::setAction(GenericCallback< Container_Menu& >& callback)
{
viewCallback = &callback;
}
void Container_Menu::selectAction()
{
// Inform the view of the event
if (viewCallback->isValid())
{
viewCallback->execute(*this);
}
}#ifndef SCREEN_LANGUAGEVIEW_HPP
#define SCREEN_LANGUAGEVIEW_HPP
#include <gui_generated/screen_language_screen/Screen_LanguageViewBase.hpp>
#include <gui/screen_language_screen/Screen_LanguagePresenter.hpp>
#include <gui/containers/Container_Menu.hpp>
class Screen_LanguageView : public Screen_LanguageViewBase
{
public:
Screen_LanguageView();
virtual ~Screen_LanguageView() {}
virtual void setupScreen();
virtual void tearDownScreen();
virtual void updateList();
virtual void listElementClicked(Container_Menu& element);
protected:
static const int item_count = 5;
int selected = 0;
Container_Menu listElements[item_count];
Callback<Screen_LanguageView, Container_Menu&> listElementClickedCallback;
};
#endif // SCREEN_LANGUAGEVIEW_HPP#include <gui/screen_language_screen/Screen_LanguageView.hpp>
Screen_LanguageView::Screen_LanguageView() : listElementClickedCallback(this, &Screen_LanguageView::listElementClicked)
{
}
void Screen_LanguageView::setupScreen()
{
Screen_LanguageViewBase::setupScreen();
list_language.setDirection(touchgfx::SOUTH);
listElements[0].setupListElement(T_LIST_LANGUAGE_0, 0);
listElements[1].setupListElement(T_LIST_LANGUAGE_1, 1);
listElements[2].setupListElement(T_LIST_LANGUAGE_2, 2);
listElements[3].setupListElement(T_LIST_LANGUAGE_3, 3);
listElements[4].setupListElement(T_LIST_LANGUAGE_4, 4);
for (uint8_t i = 0; i < item_count; ++i)
{
listElements[i].setSelection(selected);
listElements[i].setAction(listElementClickedCallback);
list_language.add(listElements[i]);
}
}
void Screen_LanguageView::tearDownScreen()
{
Screen_LanguageViewBase::tearDownScreen();
}
void Screen_LanguageView::listElementClicked(Container_Menu& element)
{
selected = element.getIndex();
touchgfx_printf("Item Selected = %d\n" ,selected);
updateList();
}
void Screen_LanguageView::updateList()
{
list_language.removeAll();
for (uint8_t i = 0; i < item_count; ++i)
{
listElements[i].setSelection(selected);
listElements[i].setAction(listElementClickedCallback);
list_language.add(listElements[i]);
}
list_language.invalidate();
}