/**
  *
  * jPanelMenu 1.3.0 (http://jpanelmenu.com)
  * By Anthony Colangelo (http://acolangelo.com)
  *
* */

(function($){
  $.jPanelMenu = function(options) {
    if ( typeof(options) == "undefined" || options == null ) { options = {}; };

    var jP = {
      options: $.extend({
        menu: '#menu',
        trigger: '.menu-trigger',
        excludedPanelContent: 'style, script',

        direction: 'left',
        openPosition: '250px',
        animated: true,
        closeOnContentClick: true,	

        keyboardShortcuts: [
          {
            code: 27,
            open: false,
            close: true 
          },
          {
            code: 37,
            open: false,
            close: true 
          },
          {
            code: 39,
            open: true,
            close: true 
          },
          {
            code: 77,
            open: true,
            close: true 
          }
        ],

        duration: 150,
        openDuration: options.duration || 150,
        closeDuration: options.duration || 150,

        easing: 'ease-in-out',
        openEasing: options.easing || 'ease-in-out',
        closeEasing: options.easing || 'ease-in-out',

        before: function(){ },
        beforeOpen: function(){ },
        beforeClose: function(){ },

        after: function(){ },
        afterOpen: function(){ },
        afterClose: function(){ },

        beforeOn: function(){ },
        afterOn: function(){ },

        beforeOff: function(){ },
        afterOff: function(){ }
      },options),

      settings: {
        transitionsSupported:	'WebkitTransition' in document.body.style ||
                    'MozTransition' in document.body.style ||
                    'msTransition' in document.body.style ||
                    'OTransition' in document.body.style ||
                    'Transition' in document.body.style
        ,
        shiftFixedChildren: false,
        panelPosition: 'relative',
        positionUnits: 'px'
      },

      menu: '#jPanelMenu-menu',

      panel: '.jPanelMenu-panel',

      fixedChildren: [],

      timeouts: {},

      clearTimeouts: function() {
        clearTimeout(jP.timeouts.open);
        clearTimeout(jP.timeouts.afterOpen);
        clearTimeout(jP.timeouts.afterClose);
      },

      setPositionUnits: function() {
        var foundUnit = false,
          allowedUnits = ['%','px','em']
        ;

        for ( unitID in allowedUnits ) {
          var unit = allowedUnits[unitID];
          if ( jP.options.openPosition.toString().substr(-unit.length) == unit )
          {
            foundUnit = true;
            jP.settings.positionUnits = unit;
          }
        }

        if ( !foundUnit ) { jP.options.openPosition = parseInt(jP.options.openPosition) + jP.settings.positionUnits }
      },

      checkFixedChildren: function() {
        jP.disableTransitions();

        var defaultPanelStyle = { position: $(jP.panel).css('position') };

        defaultPanelStyle[jP.options.direction] = ($(jP.panel).css(jP.options.direction) == 'auto')?0:$(jP.panel).css(jP.options.direction);

        $(jP.panel).find('> *').each(function(){
          if ( $(this).css('position') == 'fixed' && $(this).css(jP.options.direction) == 'auto' ) { jP.fixedChildren.push(this); }
        });
        
        if ( jP.fixedChildren.length > 0 )
        {
          var newPanelStyle = { position: 'relative' };
          newPanelStyle[jP.options.direction] = '1px';
          jP.setPanelStyle(newPanelStyle);

          if ( parseInt($(jP.fixedChildren[0]).offset().left) == 0 ) { jP.settings.shiftFixedChildren = true; }
        }

        jP.setPanelStyle(defaultPanelStyle);
      },

      setjPanelMenuStyles: function() {
        var bgColor = '#fff';
        var htmlBG = $('html').css('background-color');
        var bodyBG = $('body').css('background-color');

        if ( bodyBG != 'transparent' && bodyBG != "rgba(0, 0, 0, 0)") { bgColor = bodyBG; }
        else if ( htmlBG != 'transparent' && htmlBG != "rgba(0, 0, 0, 0)") { bgColor = htmlBG; }
        else { bgColor = '#fff'; }

        if ( $('#jPanelMenu-style-master').length == 0 )
        {
          $('body').append('<style id="jPanelMenu-style-master">@media only screen and (max-width: 767px) { body{width:100%}.jPanelMenu,body{overflow-x:hidden}#jPanelMenu-menu{display:block;position:fixed;top:0;'+jP.options.direction+':0;height:100%;z-index:-1;overflow-x:hidden;overflow-y:scroll;-webkit-overflow-scrolling:touch}.jPanelMenu-panel{position:static;'+jP.options.direction+':0;top:0;z-index:2;width:100%;min-height:100%;background:' + bgColor + '}}</style>');
        }
      },

      setMenuState: function(open) {
        var position = (open)?'open':'closed';
        $('body').attr('data-menu-position', position);
      },

      getMenuState: function() {
        return $('body').attr('data-menu-position');
      },

      menuIsOpen: function() {
        if ( jP.getMenuState() == 'open' ) return true;
        else return false;
      },

      setMenuStyle: function(styles) {
        $(jP.menu).css(styles);
      },

      setPanelStyle: function(styles) {
        $(jP.panel).css(styles);
      },

      showMenu: function() {
        jP.setMenuStyle({
          display: 'block'
        });
        jP.setMenuStyle({
          'z-index': '1'
        });
      },

      hideMenu: function() {
        jP.setMenuStyle({
          'z-index': '-1'
        });
        jP.setMenuStyle({
          display: 'none'
        });
      },

      enableTransitions: function(duration, easing) {
        var formattedDuration = duration/1000;
        var formattedEasing = jP.getCSSEasingFunction(easing);
        jP.disableTransitions();
        $('body').append('<style id="jPanelMenu-style-transitions">.jPanelMenu-panel{-webkit-transition: all ' + formattedDuration + 's ' + formattedEasing + '; -moz-transition: all ' + formattedDuration + 's ' + formattedEasing + '; -o-transition: all ' + formattedDuration + 's ' + formattedEasing + '; transition: all ' + formattedDuration + 's ' + formattedEasing + ';}</style>');
      },

      disableTransitions: function() {
        $('#jPanelMenu-style-transitions').remove();
      },

      enableFixedTransitions: function(selector, id, duration, easing) {
        var formattedDuration = duration/1000;
        var formattedEasing = jP.getCSSEasingFunction(easing);
        jP.disableFixedTransitions(id);
        $('body').append('<style id="jPanelMenu-style-fixed-' + id + '">' + selector + '{-webkit-transition: all ' + formattedDuration + 's ' + formattedEasing + '; -moz-transition: all ' + formattedDuration + 's ' + formattedEasing + '; -o-transition: all ' + formattedDuration + 's ' + formattedEasing + '; transition: all ' + formattedDuration + 's ' + formattedEasing + ';}</style>');
      },

      disableFixedTransitions: function(id) {
        $('#jPanelMenu-style-fixed-' + id).remove();
      },

      getCSSEasingFunction: function(name) {
        switch ( name )
        {
          case 'linear':
            return name;
            break;

          case 'ease':
            return name;
            break;

          case 'ease-in':
            return name;
            break;

          case 'ease-out':
            return name;
            break;

          case 'ease-in-out':
            return name;
            break;

          default:
            return 'ease-in-out';
            break;
        }
      },

      getJSEasingFunction: function(name) {
        switch ( name )
        {
          case 'linear':
            return name;
            break;

          default:
            return 'swing';
            break;
        }
      },

      openMenu: function(animated) {
        if ( typeof(animated) == "undefined" || animated == null ) { animated = jP.options.animated };
        
        jP.clearTimeouts();

        jP.options.before();
        jP.options.beforeOpen();

        jP.setMenuState(true);

        jP.setPanelStyle({ position: 'relative' });
        
        jP.showMenu();

        var animationChecks = {
          none: (!animated)?true:false,
          transitions: (animated && jP.settings.transitionsSupported)?true:false
        };

        if ( animationChecks.transitions || animationChecks.none ) {
          if ( animationChecks.none ) jP.disableTransitions();
          if ( animationChecks.transitions ) jP.enableTransitions(jP.options.openDuration, jP.options.openEasing);

          var newPanelStyle = {};
          newPanelStyle[jP.options.direction] = jP.options.openPosition;
          jP.setPanelStyle(newPanelStyle);

          if ( jP.settings.shiftFixedChildren )
          {
            $(jP.fixedChildren).each(function(){
              var id = $(this).prop("tagName").toLowerCase() + ' ' + $(this).attr('class'),
                selector = id.replace(' ','.'),
                id = id.replace(' ','-')
              ;

              if ( animationChecks.none ) jP.disableFixedTransitions(id);
              if ( animationChecks.transitions ) jP.enableFixedTransitions(selector, id, jP.options.openDuration, jP.options.openEasing);

              var newChildrenStyle = {};
              newChildrenStyle[jP.options.direction] = jP.options.openPosition;
              $(this).css(newChildrenStyle);
            });
          }

          jP.timeouts.afterOpen = setTimeout(function(){
            jP.disableTransitions();
            if ( jP.settings.shiftFixedChildren )
            {
              $(jP.fixedChildren).each(function(){
                var id = $(this).prop("tagName").toLowerCase() + ' ' + $(this).attr('class'),
                  id = id.replace(' ','-')
                ;

                jP.disableFixedTransitions(id);
              });
            }

            jP.options.after();
            jP.options.afterOpen();
            jP.initiateContentClickListeners();
          }, jP.options.openDuration);
        }
        else {
          var formattedEasing = jP.getJSEasingFunction(jP.options.openEasing);

          var animationOptions = {};
          animationOptions[jP.options.direction] = jP.options.openPosition;
          $(jP.panel).stop().animate(animationOptions, jP.options.openDuration, formattedEasing, function(){
            jP.options.after();
            jP.options.afterOpen();
            jP.initiateContentClickListeners();
          });

          if ( jP.settings.shiftFixedChildren )
          {
            $(jP.fixedChildren).each(function(){
              var childrenAnimationOptions = {};
              childrenAnimationOptions[jP.options.direction] = jP.options.openPosition;
              $(this).stop().animate(childrenAnimationOptions, jP.options.openDuration, formattedEasing);
            });
          }
        }
      },

      closeMenu: function(animated) {
        if ( typeof(animated) == "undefined" || animated == null ) { animated = jP.options.animated };

        jP.clearTimeouts();

        jP.options.before();
        jP.options.beforeClose();

        jP.setMenuState(false);

        var animationChecks = {
          none: (!animated)?true:false,
          transitions: (animated && jP.settings.transitionsSupported)?true:false
        };

        if ( animationChecks.transitions || animationChecks.none ) {
          if ( animationChecks.none ) jP.disableTransitions();
          if ( animationChecks.transitions ) jP.enableTransitions(jP.options.closeDuration, jP.options.closeEasing);

          var newPanelStyle = {};
          newPanelStyle[jP.options.direction] = 0 + jP.settings.positionUnits;
          jP.setPanelStyle(newPanelStyle);

          if ( jP.settings.shiftFixedChildren )
          {
            $(jP.fixedChildren).each(function(){
              var id = $(this).prop("tagName").toLowerCase() + ' ' + $(this).attr('class'),
                selector = id.replace(' ','.'),
                id = id.replace(' ','-')
              ;

              if ( animationChecks.none ) jP.disableFixedTransitions(id);
              if ( animationChecks.transitions ) jP.enableFixedTransitions(selector, id, jP.options.closeDuration, jP.options.closeEasing);

              var newChildrenStyle = {};
              newChildrenStyle[jP.options.direction] = 0 + jP.settings.positionUnits;
              $(this).css(newChildrenStyle);
            });
          }

          jP.timeouts.afterClose = setTimeout(function(){
            jP.setPanelStyle({ position: jP.settings.panelPosition });

            jP.disableTransitions();
            if ( jP.settings.shiftFixedChildren )
            {
              $(jP.fixedChildren).each(function(){
                var id = $(this).prop("tagName").toLowerCase() + ' ' + $(this).attr('class'),
                  id = id.replace(' ','-')
                ;

                jP.disableFixedTransitions(id);
              });
            }

            jP.hideMenu();
            jP.options.after();
            jP.options.afterClose();
            jP.destroyContentClickListeners();
          }, jP.options.closeDuration);
        }
        else {
          var formattedEasing = jP.getJSEasingFunction(jP.options.closeEasing);

          var animationOptions = {};
          animationOptions[jP.options.direction] = 0 + jP.settings.positionUnits;
          $(jP.panel).stop().animate(animationOptions, jP.options.closeDuration, formattedEasing, function(){
            jP.setPanelStyle({ position: jP.settings.panelPosition });

            jP.hideMenu();
            jP.options.after();
            jP.options.afterClose();
            jP.destroyContentClickListeners();
          });

          if ( jP.settings.shiftFixedChildren )
          {
            $(jP.fixedChildren).each(function(){
              var childrenAnimationOptions = {};
              childrenAnimationOptions[jP.options.direction] = 0 + jP.settings.positionUnits;
              $(this).stop().animate(childrenAnimationOptions, jP.options.closeDuration, formattedEasing);
            });
          }
        }
      },

      triggerMenu: function(animated) {
        if ( jP.menuIsOpen() ) jP.closeMenu(animated);
        else jP.openMenu(animated);
      },

      initiateClickListeners: function() {
        $(document).on('click',jP.options.trigger,function(){ jP.triggerMenu(jP.options.animated); return false; });
      },

      destroyClickListeners: function() {
        $(document).off('click',jP.options.trigger,null);
      },

      initiateContentClickListeners: function() {
        if ( !jP.options.closeOnContentClick ) return false;

        $(document).on('click',jP.panel,function(e){
          if ( jP.menuIsOpen() ) jP.closeMenu(jP.options.animated);
        });
        
        $(document).on('touchend',jP.panel,function(e){
          if ( jP.menuIsOpen() ) jP.closeMenu(jP.options.animated);
        });
      },

      destroyContentClickListeners: function() {
        if ( !jP.options.closeOnContentClick ) return false;

        $(document).off('click',jP.panel,null);
        $(document).off('touchend',jP.panel,null);
      },

      initiateKeyboardListeners: function() {
        var preventKeyListeners = ['input', 'textarea'];
        $(document).on('keydown',function(e){
          var target = $(e.target),
          prevent = false;
          $.each(preventKeyListeners, function(){
            if (target.is(this.toString())) { prevent = true; }
          });
          if ( prevent ) { return true; }

          for ( mapping in jP.options.keyboardShortcuts ) {
            if ( e.which == jP.options.keyboardShortcuts[mapping].code )
            {
              var key = jP.options.keyboardShortcuts[mapping];

              if ( key.open && key.close ) { jP.triggerMenu(jP.options.animated); }
              else if ( (key.open && !key.close) && !jP.menuIsOpen() ) { jP.openMenu(jP.options.animated); }
              else if ( (!key.open && key.close) && jP.menuIsOpen() ) { jP.closeMenu(jP.options.animated); }

              return false;
            }
          }
        });
      },

      destroyKeyboardListeners: function() {
        $(document).off('keydown',null);
      },

      setupMarkup: function() {
        $('html').addClass('jPanelMenu');
        $('body > *').not(jP.menu + ', ' + jP.options.excludedPanelContent).wrapAll('<div class="' + jP.panel.replace('.','') + '"/>');
        $(jP.options.menu).clone().attr('id', jP.menu.replace('#','')).insertAfter('body > ' + jP.panel);
      },

      resetMarkup: function() {
        $('html').removeClass('jPanelMenu');
        $('body > ' + jP.panel + ' > *').unwrap();
        $(jP.menu).remove();
      },

      init: function() {
        jP.options.beforeOn();

        jP.initiateClickListeners();
        if ( Object.prototype.toString.call(jP.options.keyboardShortcuts) === '[object Array]' ) { jP.initiateKeyboardListeners(); }

        jP.setjPanelMenuStyles();
        jP.setMenuState(false);
        jP.setupMarkup();

        jP.setMenuStyle({ width: jP.options.openPosition });

        jP.checkFixedChildren();
        jP.setPositionUnits();

        jP.closeMenu(false);

        jP.options.afterOn();
      },

      destroy: function() {
        jP.options.beforeOff();

        jP.closeMenu();
        jP.destroyClickListeners();
        if ( Object.prototype.toString.call(jP.options.keyboardShortcuts) === '[object Array]' ) { jP.destroyKeyboardListeners(); }

        jP.resetMarkup();
        var childrenStyles = {};
        childrenStyles[jP.options.direction] = 'auto';
        $(jP.fixedChildren).each(function(){ $(this).css(childrenStyles); });
        jP.fixedChildren = [];

        jP.options.afterOff();
      }
    };

    return {
      on: jP.init,
      off: jP.destroy,
      trigger: jP.triggerMenu,
      open: jP.openMenu,
      close: jP.closeMenu,
      isOpen: jP.menuIsOpen,
      menu: jP.menu,
      getMenu: function() { return $(jP.menu); },
      panel: jP.panel,
      getPanel: function() { return $(jP.panel); }
    };
  };
})(jQuery);