Method onProcessMessage

src/ui/listbox.cpp:141–278

}

bool ListBox::onProcessMessage(Message* msg)
{
  switch (msg->type()) {

    case kOpenMessage:
      centerScroll();
      break;

    case kMouseDownMessage:
      captureMouse();

    case kMouseMoveMessage:
      if (hasCapture()) {
        gfx::Point mousePos = static_cast<MouseMessage*>(msg)->position();
        int select = getSelectedIndex();
        View* view = View::getView(this);
        bool pick_item = true;

        if (view) {
          gfx::Rect vp = view->viewportBounds();

          if (mousePos.y < vp.y) {
            int num = MAX(1, (vp.y - mousePos.y) / 8);
            selectIndex(select-num);
            pick_item = false;
          }
          else if (mousePos.y >= vp.y + vp.h) {
            int num = MAX(1, (mousePos.y - (vp.y+vp.h-1)) / 8);
            selectIndex(select+num);
            pick_item = false;
          }
        }

        if (pick_item) {
          Widget* picked;

          if (view) {
            picked = view->viewport()->pick(mousePos);
          }
          else {
            picked = pick(mousePos);
          }

          /* if the picked widget is a child of the list, select it */
          if (picked && hasChild(picked)) {
            if (ListItem* pickedItem = dynamic_cast<ListItem*>(picked))
              selectChild(pickedItem);
          }
        }

        return true;
      }
      break;

    case kMouseUpMessage:
      releaseMouse();
      break;