/* ************************************************************************

   qooxdoo - the new era of web development

   http://qooxdoo.org

   Copyright:
     2004-2006 by 1&1 Internet AG, Germany, http://www.1and1.org

   License:
     LGPL 2.1: http://www.gnu.org/licenses/lgpl.html

   Authors:
     * Sebastian Werner (wpbasti)
     * Andreas Ecker (ecker)

************************************************************************ */

/* ************************************************************************

#module(ui_menu)

************************************************************************ */

qx.OO.defineClass("qx.renderer.layout.MenuButtonLayoutImpl", qx.renderer.layout.HorizontalBoxLayoutImpl,
function(vWidget)
{
  qx.renderer.layout.HorizontalBoxLayoutImpl.call(this, vWidget);

  // We don't need flex support, should make things a bit faster,
  // as this omits some additional loops in qx.renderer.layout.HorizontalBoxLayoutImpl.
  this.setEnableFlexSupport(false);
});


/*!
  Global Structure:
  [01] COMPUTE BOX DIMENSIONS FOR AN INDIVIDUAL CHILD
  [02] COMPUTE NEEDED DIMENSIONS FOR AN INDIVIDUAL CHILD
  [03] COMPUTE NEEDED DIMENSIONS FOR ALL CHILDREN
  [04] UPDATE LAYOUT WHEN A CHILD CHANGES ITS OUTER DIMENSIONS
  [05] UPDATE CHILD ON INNER DIMENSION CHANGES OF LAYOUT
  [06] UPDATE LAYOUT ON JOB QUEUE FLUSH
  [07] UPDATE CHILDREN ON JOB QUEUE FLUSH
  [08] CHILDREN ADD/REMOVE/MOVE HANDLING
  [09] FLUSH LAYOUT QUEUES OF CHILDREN
  [10] LAYOUT CHILD
  [11] DISPOSER


  Inherits from qx.renderer.layout.HorizontalBoxLayoutImpl:
  [01] COMPUTE BOX DIMENSIONS FOR AN INDIVIDUAL CHILD
  [02] COMPUTE NEEDED DIMENSIONS FOR AN INDIVIDUAL CHILD
  [05] UPDATE CHILD ON INNER DIMENSION CHANGES OF LAYOUT
  [06] UPDATE LAYOUT ON JOB QUEUE FLUSH
  [07] UPDATE CHILDREN ON JOB QUEUE FLUSH
  [08] CHILDREN ADD/REMOVE/MOVE HANDLING
  [09] FLUSH LAYOUT QUEUES OF CHILDREN
  [11] DISPOSER
*/





/*
---------------------------------------------------------------------------
  [03] COMPUTE NEEDED DIMENSIONS FOR ALL CHILDREN
---------------------------------------------------------------------------
*/

/*!
  Compute and return the width needed by all children of this widget
*/
qx.Proto.computeChildrenNeededWidth = function()
{
  // Caching the widget reference
  var vWidget = this.getWidget();

  // Ignore the verticalBoxLayout inside qx.ui.menu.Menu
  var vMenu = vWidget.getParent().getParent();

  // Let the menu do the real hard things
  return vMenu.getMenuButtonNeededWidth();
}







/*
---------------------------------------------------------------------------
  [04] UPDATE LAYOUT WHEN A CHILD CHANGES ITS OUTER DIMENSIONS
---------------------------------------------------------------------------
*/

/*!
  Things to do and layout when any of the childs changes its outer width.
  Needed by layouts where the children depends on each-other, like flow- or box-layouts.
*/
qx.Proto.updateSelfOnChildOuterWidthChange = function(vChild)
{
  // Caching the widget reference
  var vWidget = this.getWidget();

  // Ignore the verticalBoxLayout inside qx.ui.menu.Menu
  var vMenu = vWidget.getParent().getParent();

  // Send out invalidate signals
  switch(vChild)
  {
    case vWidget._iconObject:
      vMenu._invalidateMaxIconWidth();
      break;

    case vWidget._labelObject:
      vMenu._invalidateMaxLabelWidth();
      break;

    case vWidget._shortcutObject:
      vMenu._invalidateMaxShortcutWidth();
      break;

    case vWidget._arrowObject:
      vMenu._invalidateMaxArrowWidth();
      break;
  }

  // Call superclass implementation
  return qx.renderer.layout.HorizontalBoxLayoutImpl.prototype.updateSelfOnChildOuterWidthChange.call(this, vChild);
}







/*
---------------------------------------------------------------------------
  [10] LAYOUT CHILD
---------------------------------------------------------------------------
*/

qx.Proto.layoutChild_locationX = function(vChild, vJobs)
{
  // Caching the widget reference
  var vWidget = this.getWidget();

  // Ignore the verticalBoxLayout inside qx.ui.menu.Menu
  var vMenu = vWidget.getParent().getParent();

  // Left position of the child
  var vPos = null;

  // Ask the menu instance for the correct location
  switch(vChild)
  {
    case vWidget._iconObject:
      vPos = vMenu.getIconPosition();
      break;

    case vWidget._labelObject:
      vPos = vMenu.getLabelPosition();
      break;

    case vWidget._shortcutObject:
      vPos = vMenu.getShortcutPosition();
      break;

    case vWidget._arrowObject:
      vPos = vMenu.getArrowPosition();
      break;
  }

  if (vPos != null)
  {
    vPos += vWidget.getPaddingLeft();
    vChild._applyRuntimeLeft(vPos);
  }
}