MenuBar yui example

MenuBar-yui.cc

/*
 *  Copyright 2020 by Angelo Naselli <anaselli at linux dot it>
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as
 *  published by the Free Software Foundation; either version 2.1 of the
 *  License, or (at your option) version 3.0 of the License. This library
 *  is distributed in the hope that it will be useful, but WITHOUT ANY
 *  WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 *  License for more details. You should have received a copy of the GNU
 *  Lesser General Public License along with this library; if not, write
 *  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 *  Floor, Boston, MA 02110-1301 USA
 */


// Menu Button example demonstrating also shortcut resolver.
//
// Compile with:
//
//     g++ -I/usr/include/yui -lyui MenuBar-yui.cc -o MenuBar-yui

#include "YUI.h"
#include "YWidgetFactory.h"
#include "YDialog.h"
#include "YLayoutBox.h"
#include "YEvent.h"
#include "YExternalWidgets.h"
#include "YMenuButton.h"
#include "YPushButton.h"
#include "YLabel.h"
#include "YMenuItem.h"
#include "YExternalWidgets.h"
#include "YMenuBar.h"
#define YUILogComponent "YMenuBar"
#include "YUILog.h"


int main( int argc, char **argv )
{
  // If you need logging uncommment next two lines
  YUILog::setLogFileName( "/tmp/libyui-mga-examples.log" );
  YUILog::enableDebugLogging();

  YDialog    * dialog = YUI::widgetFactory()->createPopupDialog();
  YLayoutBox * vbox   = YUI::widgetFactory()->createVBox( dialog );

  YMenuBar *menuBar = YUI::widgetFactory()->createMenuBar(vbox);
  YMenuItem *top = new YMenuItem("&Menu");

  // "Enable submenu4" is disabled
  YMenuItem *m1 = new YMenuItem(top, "&Enable submenu4");
  m1->setEnabled(false);

  YMenuItem *enM1Item = new YMenuItem(top, "&Enabler/disable Menu 1");
  new YMenuItem(top, "submenu&3");
  YMenuItem *m4 = new YMenuItem(top, "Enable &submen1");
  YMenuItem *hideM2Item = new YMenuItem(top, "&Hide/Show Menu 2");
  menuBar->addItem(top);

  // "Menu 1" is disabled
  YMenuItem *menu1Item = new YMenuItem("Menu &1");
  new YMenuItem( new YMenuItem(menu1Item, "m&1"), "sm1" );
  new YMenuItem(menu1Item, "m&2");
  new YMenuItem(menu1Item, "m&3");
  menu1Item->setEnabled(false);
  menuBar->addItem(menu1Item);

  // "Menu 2" is hidden at startup
  YMenuItem *hiddenMenu = new YMenuItem("Menu &2");
  YMenuItem *showNextMenuItem = new YMenuItem(hiddenMenu, "&Show/Hide next item");
  YMenuItem *hiddenMenuItem = new YMenuItem( hiddenMenu, "&Hidden menu" );
  hiddenMenuItem->setVisible(false);
  hiddenMenu->setVisible(false);
  menuBar->addItem(hiddenMenu);

  YMenuItem* mItem = new YMenuItem("Menu &3");
  YMenuItem *tmi = new YMenuItem(mItem, "m3 &1");
  new YMenuItem( tmi, "sm1" );
  new YMenuItem( tmi, "m3 sm2" );
  new YMenuItem(mItem, "m3 &2");
  new YMenuItem(mItem, "m3 &3");
  new YMenuItem(mItem, "m3 &4");
  new YMenuItem(mItem, "m3 &5");
  new YMenuItem(mItem, "m3 &6");
  new YMenuItem(mItem, "m3 &7");
  new YMenuItem(mItem, "m3 &8");
  new YMenuItem(mItem, "m3 &9");
  new YMenuItem(mItem, "m3 &10");
  new YMenuItem(mItem, "m3 &11");
  new YMenuItem(mItem, "m3 &12");
  menuBar->addItem(mItem);

  mItem = new YMenuItem("Menu &4");
  new YMenuItem(mItem, "m4 &1");
  new YMenuItem(mItem, "m4 &2");
  menuBar->addItem(mItem);
  menuBar->resolveShortcutConflicts();
  menuBar->rebuildMenuTree();
  YLabel *label = YUI::widgetFactory()->createLabel( vbox, "Here you'll see chosen menu item  " );
  YLayoutBox * hbox   = YUI::widgetFactory()->createHBox( vbox );
  YPushButton* changeMenuButton = YUI::widgetFactory()->createPushButton( hbox, "&Change Menu");
  YPushButton* quitButton = YUI::widgetFactory()->createPushButton( hbox, "&Quit");
  YMenuItem *quitMenu = NULL;

  while ( true )
  {
    YEvent * event = dialog->waitForEvent();
    YEvent::EventType eventType = event->eventType();
    if (eventType == YEvent::CancelEvent)
      break;
    else if (eventType == YEvent::MenuEvent)
    {
      YItem *item = event->item();
      if (item)
      {
        label->setValue(item->label());
        if (item == enM1Item)
        {
          menuBar->setItemEnabled(menu1Item, !menu1Item->isEnabled());
        }
        else if (item == m1)
        {
          menuBar->setItemEnabled(m4, true);
          menuBar->setItemEnabled(m1, false);
        }
        else if (item == m4)
        {
          menuBar->setItemEnabled(m1, true);
          menuBar->setItemEnabled(m4, false);
        }
        else if (item == showNextMenuItem)
        {
          menuBar->setItemVisible(hiddenMenuItem, !hiddenMenuItem->isVisible());
        }
        else if (item == hideM2Item)
        {
          menuBar->setItemVisible(hiddenMenu, !hiddenMenu->isVisible());
        }
        else if (item == quitMenu)
          break;
      }
    }
    else if (eventType == YEvent::WidgetEvent)
    {
      YWidget *wdg = event->widget();
      if (wdg == (YWidget*)quitButton)
        break;
      else if (wdg == (YWidget*)changeMenuButton)
      {
        menuBar->startMultipleChanges();
        menuBar->deleteAllItems();
        menuBar->doneMultipleChanges();
        changeMenuButton->setEnabled(false);

        // next items have been removed but are still managed into loop
        // this is a simple exmaple so let's avoid to test them wrongly
        // setting to NULL
        enM1Item = NULL;
        hiddenMenu = NULL;
        hiddenMenuItem = NULL;
        showNextMenuItem = NULL;
        m1 = m4 = NULL;
        menu1Item = hideM2Item = NULL;

        YItemCollection itemCollection;
        YMenuItem* mItem = new YMenuItem("&File");
        YMenuItem *tmi = new YMenuItem(mItem, "&New");
        new YMenuItem( tmi, "New &1" , "document-new");
        new YMenuItem( tmi, "New &2" , "contact-new");
        mItem->addSeparator();
        new YMenuItem(mItem, "&Open", "document-open.png");
        mItem->addSeparator();
        new YMenuItem(mItem, "&Save", "document-save.png");
        new YMenuItem(mItem, "&Save as", "document-save-as");
        mItem->addSeparator();
        quitMenu = new YMenuItem(mItem, "&Quit", "application-exit");
        itemCollection.push_back(mItem);

        YMenuItem* mItem1 = new YMenuItem("&Edit");
        new YMenuItem(mItem1, "&Undo", "edit-undo.png");
        new YMenuItem(mItem1, "&Redo", "edit-redo.png");
        mItem1->addSeparator();
        new YMenuItem(mItem1, "Cu&t", "edit-cut.png");
        new YMenuItem(mItem1, "&Copy", "edit-copy.png");
        new YMenuItem(mItem1, "&Paste", "edit-paste.png");
        itemCollection.push_back(mItem1);

        menuBar->addItems(itemCollection);
        menuBar->rebuildMenuTree();
      }
    }

  }

  dialog->destroy();
}