/**
 * @copyright	Copyright (C) 2005 - 2017 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */

/**
 * JavaScript behavior to add front-end hover edit icons with tooltips for modules and menu items.
 *
 */
(function ($) {

   $.fn.extend({
      /**
       * This jQuery custom method makes the elements absolute, and with true argument moves them to end of body to avoid CSS inheritence
       *
       * @param   rebase boolean
       * @returns {jQuery}
       */
      jEditMakeAbsolute: function (rebase) {

         return this.each(function () {

            var el = $(this);
            var pos;

            if (rebase) {
               pos = el.offset();
            } else {
               pos = el.position();
            }

            el.css({position: "absolute",
               marginLeft: 0, marginTop: 0,
               top: pos.top, left: pos.left,
               bottom: 'auto', right: 'auto'
            });

            if (rebase) {
               el.detach().appendTo("body");
            }
         });

      }
   });

   $(document).ready(function () {

      // Tooltip maximal dimensions for intelligent placement:
      var actualWidth = 200;
      var actualHeight = 100;
      // Tooltip smart tooltip placement function:
      var tooltipPlacer = function (tip, element) {
         var $element, above, below, boundBottom, boundLeft, boundRight, boundTop, elementAbove, elementBelow, elementLeft, elementRight, isWithinBounds, left, pos, right;
         isWithinBounds = function (elementPosition) {
            return boundTop < elementPosition.top && boundLeft < elementPosition.left && boundRight > (elementPosition.left + actualWidth) && boundBottom > (elementPosition.top + actualHeight);
         };
         $element = $(element);
         pos = $.extend({}, $element.offset(), {
            width: element.offsetWidth,
            height: element.offsetHeight
         });
         boundTop = $(document).scrollTop();
         boundLeft = $(document).scrollLeft();
         boundRight = boundLeft + $(window).width();
         boundBottom = boundTop + $(window).height();
         elementAbove = {
            top: pos.top - actualHeight,
            left: pos.left + pos.width / 2 - actualWidth / 2
         };
         elementBelow = {
            top: pos.top + pos.height,
            left: pos.left + pos.width / 2 - actualWidth / 2
         };
         elementLeft = {
            top: pos.top + pos.height / 2 - actualHeight / 2,
            left: pos.left - actualWidth
         };
         elementRight = {
            top: pos.top + pos.height / 2 - actualHeight / 2,
            left: pos.left + pos.width
         };
         above = isWithinBounds(elementAbove);
         below = isWithinBounds(elementBelow);
         left = isWithinBounds(elementLeft);
         right = isWithinBounds(elementRight);
         if (above) {
            return "top";
         } else {
            if (below) {
               return "bottom";
            } else {
               if (left) {
                  return "left";
               } else {
                  if (right) {
                     return "right";
                  } else {
                     return "right";
                  }
               }
            }
         }
      };

      // Modules edit icons:

      $('.jmoddiv').on({
         mouseenter: function () {

            // Get module editing URL and tooltip for module edit:
            var moduleEditUrl = $(this).data('jmodediturl');
            var moduleTip = $(this).data('jmodtip');
            var moduleTarget = $(this).data('target');

            // Stop timeout on previous tooltip and remove it:
            try {
               $('body>.btn.jmodedit').clearQueue().tooltip('dispose').remove();
               $('body>.btn.jmodedit').clearQueue().tooltip('destroy').remove();
               next();
            } catch (e) {
            }

            // Add editing button with tooltip:
            $(this).addClass('jmodinside')
                    .prepend('<a class="btn jmodedit" href="#" target="' + moduleTarget + '"><span class="icon-edit"></span></a>')
                    .children(":first").attr('href', moduleEditUrl).attr('title', moduleTip)
                    .tooltip({"container": false, html: true, placement: tooltipPlacer})
                    .jEditMakeAbsolute(true);

            $('.btn.jmodedit')
                    .on({
                       mouseenter: function () {
                          // Stop delayed removal programmed by mouseleave of .jmoddiv or of this one:
                          $(this).clearQueue();
                       },
                       mouseleave: function () {
                          // Delay remove editing button if not hovering it:
                          $(this).delay(500).queue(function (next) {
                             try {
                                $(this).tooltip('dispose').remove();
                                $(this).tooltip('destroy').remove();
                                next();
                             } catch (e) {
                             }
                          });
                       }
                    });
         },
         mouseleave: function () {

            // Delay remove editing button if not hovering it:
            $('body>.btn.jmodedit').delay(500).queue(function (next) {
               try {
                  $(this).tooltip('dispose').remove();
                  $(this).tooltip('destroy').remove();
                  next();
               } catch (e) {
               }
            });
         }
      });

      // Menu items edit icons:

      var activePopover = null;

      $('.jmoddiv[data-jmenuedittip] .nav li,.jmoddiv[data-jmenuedittip].nav li,.jmoddiv[data-jmenuedittip] .nav .nav-child li,.jmoddiv[data-jmenuedittip].nav .nav-child li').on({
         mouseenter: function () {

            // Get menu ItemId from the item-nnn class of the li element of the menu:
            var itemids = /\bitem-(\d+)\b/.exec($(this).attr('class'));
            if (typeof itemids[1] == 'string') {
               // Find module editing URL from enclosing module:
               var enclosingModuleDiv = $(this).closest('.jmoddiv');
               var moduleEditUrl = enclosingModuleDiv.data('jmodediturl');
               // Transform module editing URL into Menu Item editing url:
               var menuitemEditUrl = moduleEditUrl.replace(/\/index.php\?option=com_config&controller=config.display.modules([^\d]+).+$/, '/administrator/index.php?option=com_menus&view=item&layout=edit$1' + itemids[1]);

            }

            // Get tooltip for menu items from enclosing module
            var menuEditTip = enclosingModuleDiv.data('jmenuedittip').replace('%s', itemids[1]);

            var content = $('<div><a class="btn jfedit-menu" href="#" target="_blank"><span class="icon-edit"></span></a></div>');
            content.children('a.jfedit-menu').prop('href', menuitemEditUrl).prop('title', menuEditTip);

            if (activePopover) {
               $(activePopover).popover('hide');
            }
            $(this).popover({html: true, content: content.html(), container: 'body', trigger: 'manual', animation: false, placement: 'bottom'}).popover('show');
            activePopover = this;

            $('body>div.popover')
                    .on({
                       mouseenter: function () {
                          if (activePopover) {
                             $(activePopover).clearQueue();
                          }
                       },
                       mouseleave: function () {
                          if (activePopover) {
                             $(activePopover).popover('hide');
                          }
                       }
                    })
                    .find('a.jfedit-menu').tooltip({"container": false, html: true, placement: 'bottom'});
         },
         mouseleave: function () {
            $(this).delay(1500).queue(function (next) {
               $(this).popover('hide');
               next()
            });
         }
      });
   });
})(jQuery);