/*!
 * Bootstrap Confirmation
 * Copyright 2013 Nimit Suwannagate <ethaizone@hotmail.com>
 * Copyright 2014 Damien "Mistic" Sorel <http://www.strangeplanet.fr>
 * Licensed under the Apache License, Version 2.0 (the "License")
 */

(function ($) {
  'use strict';

  // Confirmation extends popover.js
  if (!$.fn.popover) throw new Error('Confirmation requires popover.js');

  // CONFIRMATION PUBLIC CLASS DEFINITION
  // ===============================
  var Confirmation = function (element, options) {
    this.init('confirmation', element, options);

    var that = this;

    if (!this.options.selector) {
      // get existing href and target
      if (this.$element.attr('href')) {
        this.options.href = this.$element.attr('href');
        this.$element.removeAttr('href');
        if (this.$element.attr('target')) {
          this.options.target = this.$element.attr('target');
        }
      }

      // cancel original event
      this.$element.on(that.options.trigger, function(e, ack) {
        if (!ack) {
          e.preventDefault();
          e.stopPropagation();
          e.stopImmediatePropagation();
        }
      });

      // trigger original event on confirm
      this.$element.on('confirmed.bs.confirmation', function(e) {
        $(this).trigger(that.options.trigger, [true]);
      });

      // manage singleton
      this.$element.on('show.bs.confirmation', function(e) {
        if (that.options.singleton) {
          // close all other popover already initialized
          $(that.options._selector).not($(this)).filter(function() {
            return $(this).data('bs.confirmation') !== undefined;
          }).confirmation('hide');
        }
      });
    }

    if (!this.options._isDelegate) {
      // manage popout
      this.eventBody = false;
      this.uid = this.$element[0].id || this.getUID('group_');

      this.$element.on('shown.bs.confirmation', function(e) {
        if (that.options.popout && !that.eventBody) {
          var $this = $(this);
          that.eventBody = $('body').on('click.bs.confirmation.'+that.uid, function(e) {
            if ($(that.options._selector).is(e.target)) {
              return;
            }
  
            // close all popover already initialized
            $(that.options._selector).filter(function() {
              return $(this).data('bs.confirmation') !== undefined;
            }).confirmation('hide');

            $('body').off('click.bs.'+that.uid);
            that.eventBody = false;
          });
        }
      });
    }
  };

  Confirmation.DEFAULTS = $.extend({}, $.fn.popover.Constructor.DEFAULTS, {
    placement: 'top',
    title: 'Are you sure?',
    html: true,
    href: false,
    popout: false,
    singleton: false,
    target: '_self',
    onConfirm: $.noop,
    onCancel: $.noop,
    btnOkClass: 'btn-xs btn-primary',
    btnOkIcon: 'glyphicon glyphicon-ok',
    btnOkLabel: 'Yes',
    btnCancelClass: 'btn-xs btn-default',
    btnCancelIcon: 'glyphicon glyphicon-remove',
    btnCancelLabel: 'No',
    template:
      '<div class="popover confirmation">' +
        '<div class="arrow"></div>' +
        '<h3 class="popover-title"></h3>' +
        '<div class="popover-content text-center">'+
          '<div class="btn-group">'+
            '<a class="btn" data-apply="confirmation"></a>'+
            '<a class="btn" data-dismiss="confirmation"></a>'+
          '</div>'+
        '</div>'+
      '</div>'
  });

  Confirmation.prototype = $.extend({}, $.fn.popover.Constructor.prototype);

  Confirmation.prototype.constructor = Confirmation;

  Confirmation.prototype.getDefaults = function () {
    return Confirmation.DEFAULTS;
  };

  // custom init keeping trace of selectors
  Confirmation.prototype.init = function(type, element, options) {
    $.fn.popover.Constructor.prototype.init.call(this, type, element, options);

    this.options._isDelegate = false;
    if (options.selector) { // container of buttons
      this.options._selector = this._options._selector = options._root_selector +' '+ options.selector;
    }
    else if (options._selector) { // children of container
      this.options._selector = options._selector;
      this.options._isDelegate = true;
    }
    else { // standalone
      this.options._selector = options._root_selector;
    }
  };

  Confirmation.prototype.setContent = function () {
    var that = this,
        $tip = this.tip(),
        o = this.options;

    $tip.find('.popover-title')[o.html ? 'html' : 'text'](this.getTitle());

    // configure 'ok' button
    $tip.find('[data-apply="confirmation"]')
      .addClass(o.btnOkClass)
      .html(o.btnOkLabel)
      .prepend($('<i></i>').addClass(o.btnOkIcon), ' ')
      .off('click')
      .one('click', function(e) {
        that.getOnConfirm.call(that).call(that.$element);
        that.$element.trigger('confirmed.bs.confirmation');
        that.leave(that);
      });

    // add href to confirm button if needed
    if (o.href && o.href != "#") {
      $tip.find('[data-apply="confirmation"]').attr({
        href: o.href,
        target: o.target
      });
    }

    // configure 'cancel' button
    $tip.find('[data-dismiss="confirmation"]')
      .addClass(o.btnCancelClass)
      .html(o.btnCancelLabel)
      .prepend($('<i></i>').addClass(o.btnCancelIcon), ' ')
      .off('click')
      .one('click', function(e) {
        that.getOnCancel.call(that).call(that.$element);
        that.$element.trigger('canceled.bs.confirmation');
        that.leave(that);
      });

    $tip.removeClass('fade top bottom left right in');

    // IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
    // this manually by checking the contents.
    if (!$tip.find('.popover-title').html()) {
      $tip.find('.popover-title').hide();
    }
  };

  Confirmation.prototype.getOnConfirm = function() {
    if (this.$element.attr('data-on-confirm')) {
      return getFunctionFromString(this.$element.attr('data-on-confirm'));
    }
    else {
      return this.options.onConfirm;
    }
  };

  Confirmation.prototype.getOnCancel = function() {
    if (this.$element.attr('data-on-cancel')) {
      return getFunctionFromString(this.$element.attr('data-on-cancel'));
    }
    else {
      return this.options.onCancel;
    }
  };

  /*
   * Generates an anonymous function from a function name
   * function name may contain dots (.) to navigate through objects
   * root context is window
   */
  function getFunctionFromString(functionName) {
    var context = window,
        namespaces = functionName.split('.'),
        func = namespaces.pop();

    for (var i=0, l=namespaces.length; i<l; i++) {
      context = context[namespaces[i]];
    }

    return function() {
      context[func].call(this);
    };
  }


  // CONFIRMATION PLUGIN DEFINITION
  // =========================

  var old = $.fn.confirmation;

  $.fn.confirmation = function (option) {
    var options = (typeof option == 'object' && option) || {};
    options._root_selector = this.selector;

    return this.each(function () {
      var $this = $(this),
          data  = $this.data('bs.confirmation');

      if (!data && option == 'destroy') {
        return;
      }
      if (!data) {
        $this.data('bs.confirmation', (data = new Confirmation(this, options)));
      }
      if (typeof option == 'string') {
        data[option]();
      }
    });
  };

  $.fn.confirmation.Constructor = Confirmation;


  // CONFIRMATION NO CONFLICT
  // ===================

  $.fn.confirmation.noConflict = function () {
    $.fn.confirmation = old;
    return this;
  };

}(jQuery));
