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/*******************************************************************************
 * Copyright (c) 2014-2015 BSI Business Systems Integration AG.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     BSI Business Systems Integration AG - initial API and implementation
 ******************************************************************************/
scout.PopupWithHeadLayout = function(popup) {
  scout.PopupWithHeadLayout.parent.call(this, popup);
  this.popup = popup;
};
scout.inherits(scout.PopupWithHeadLayout, scout.PopupLayout);

scout.PopupWithHeadLayout.prototype.layout = function($container) {
  scout.PopupWithHeadLayout.parent.prototype.layout.call(this, $container);

  var htmlComp = this.popup.htmlComp,
    popupSize = htmlComp.getSize();

  //while animating the body animation sets the size.
  if (!this.popup.bodyAnimating) {
    // Set size of body
    popupSize = popupSize.subtract(htmlComp.getInsets());
    if (this._headVisible) {
      var headSize = scout.graphics.getSize(this.popup.$head, true);
      //adjust popupsize if head changed size
      if (popupSize.width < headSize.width) {
        popupSize.width = headSize.width;
        scout.graphics.setSize(htmlComp.$comp, popupSize);
      }
    }

    scout.graphics.setSize(this.popup.$body, popupSize);
  }
};

/**
 * @override
 */
scout.PopupWithHeadLayout.prototype._calcMaxSizeAroundAnchor = function() {
  // Position the popup at the desired location before doing any calculations,
  // but do no try to switch the position if there is not enough space
  this.popup.position(false);

  var maxWidthLeft, maxWidthRight, maxHeightDown, maxHeightUp,
    htmlComp = this.popup.htmlComp,
    windowPaddingX = this.popup.windowPaddingX,
    windowPaddingY = this.popup.windowPaddingY,
    popupBounds = scout.graphics.offsetBounds(htmlComp.$comp),
    popupMargins = htmlComp.getMargins(),
    popupHeadSize = new scout.Dimension(0, 0),
    $window = this.popup.$container.window(),
    windowSize = new scout.Dimension($window.width(), $window.height());

  if (this.popup.$head) {
    popupHeadSize = scout.graphics.getSize(this.popup.$head);
  }

  maxWidthRight = (windowSize.width - popupBounds.x - windowPaddingX);
  maxWidthLeft = (popupBounds.x + popupHeadSize.width - popupMargins.horizontal() - windowPaddingX);
  maxHeightDown = (windowSize.height - popupBounds.y - windowPaddingY);
  // head height is irrelevant because popup has a margin as height as the header
  maxHeightUp = (popupBounds.y - popupMargins.vertical() - windowPaddingY);

  return new scout.Insets(maxHeightUp, maxWidthRight, maxHeightDown, maxWidthLeft);
};

scout.PopupWithHeadLayout.prototype.preferredLayoutSize = function($container) {
  var htmlComp = this.popup.htmlComp,
    prefSize;

  if (!this.popup.bodyAnimating) {
    var popupStyleBackup = this.popup.$container.attr('style');
    this.popup.$container.css({
      width: 'auto',
      height: 'auto'
    });
    prefSize = scout.graphics.prefSize(this.popup.$body, true)
      .add(htmlComp.getInsets());
    this.popup.$container.attr('style', popupStyleBackup);
  } else {
    prefSize = scout.graphics.getSize(this.popup.$body, true);
  }

  if (this.popup._headVisible) {
    var headSize = scout.graphics.getSize(this.popup.$head, true);
    prefSize.width = prefSize.width < headSize.width ? headSize.width : prefSize.width;
  }
  return prefSize;
};