code: protected void openGalleryDialog() {
  
          String title = org.opencms.gwt.client.Messages.get().key(
              org.opencms.gwt.client.Messages.GUI_GALLERY_SELECT_DIALOG_TITLE_0);
          final CmsFramePopup popup = new CmsFramePopup(title, buildGalleryUrl());
          popup.setCloseHandler(new Runnable() {
  
              public void run() {
  
                  m_textbox.setGhostMode(false);
  
              }
  
          });
          popup.setId(m_id);
          popup.getFrame().setSize("700px", "490px");
          popup.center();
  
          CmsPushButton button = new CmsPushButton(I_CmsButton.DELETE_SMALL);
          button.setButtonStyle(ButtonStyle.FONT_ICON, null);
          button.setSize(Size.small);
          Style style = button.getElement().getStyle();
          style.setRight(4, Unit.PX);
          style.setTop(0, Unit.PX);
          style.setPosition(Position.ABSOLUTE);
          style.setCursor(Cursor.POINTER);
          button.addClickHandler(new ClickHandler() {
  
              /**
               * @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent)
               */
              public void onClick(ClickEvent event) {
  
                  popup.hide();
              }
          });
  
          popup.insertFront(button);
      }
docs: Internal method which opens the gallery dialog.<p>