Method showPopup

Engine/source/gui/editor/popupMenu.cpp:297–458

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void PopupMenu::showPopup(GuiCanvas *owner, S32 x /* = -1 */, S32 y /* = -1 */)
{
   if (owner == NULL)
      return;

   GuiPopupMenuBackgroundCtrl* backgroundCtrl;
   Sim::findObject("PopUpMenuControl", backgroundCtrl);

   GuiControlProfile* profile;
   Sim::findObject("ToolsGuiMenuBarProfile", profile);

   if (!profile)
      return;

   if (mTextList == nullptr)
   {
      mTextList = new GuiPopupMenuTextListCtrl();
      mTextList->registerObject();
      mTextList->setControlProfile(profile);
      mTextList->mRowHeightPadding = 5;

      mTextList->mPopup = this;
      mTextList->mMenuBar = getMenuBarCtrl();
   }

   if (!backgroundCtrl)
   {
      backgroundCtrl = new GuiPopupMenuBackgroundCtrl();

      backgroundCtrl->registerObject("PopUpMenuControl");
   }

   if (!backgroundCtrl || !mTextList)
      return;

   if (!mIsSubmenu)
   {
      //if we're a 'parent' menu, then tell the background to clear out all existing other popups

      backgroundCtrl->clearPopups();
   }

   //find out if we're doing a first-time add
   S32 popupIndex = backgroundCtrl->findPopupMenu(this);

   if (popupIndex == -1)
   {
      backgroundCtrl->addObject(mTextList);
      backgroundCtrl->mPopups.push_back(this);
   }

   mTextList->mBackground = backgroundCtrl;

   owner->pushDialogControl(backgroundCtrl, 10);

   //Set the background control's menubar, if any, and if it's not already set
   if(backgroundCtrl->mMenuBarCtrl == nullptr)
      backgroundCtrl->mMenuBarCtrl = getMenuBarCtrl();