/*!
 * jQuery Simulate v@VERSION - simulate browser mouse and keyboard events
 * https://github.com/jquery/jquery-simulate
 *
 * Copyright 2012 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * Date: @DATE
 */

;(function ($, undefined) {

  var rkeyEvent = /^key/,
      rmouseEvent = /^(?:mouse|contextmenu)|click/;

  $.fn.simulate = function (type, options) {
    return this.each(function () {
      new $.simulate(this, type, options);
    });
  };

  $.simulate = function (elem, type, options) {
    var method = $.camelCase("simulate-" + type);

    this.target = elem;
    this.options = options;

    if (this[method]) {
      this[method]();
    } else {
      this.simulateEvent(elem, type, options);
    }
  };

  $.extend($.simulate, {

    keyCode: {
      BACKSPACE: 8,
      COMMA: 188,
      DELETE: 46,
      DOWN: 40,
      END: 35,
      ENTER: 13,
      ESCAPE: 27,
      HOME: 36,
      LEFT: 37,
      NUMPAD_ADD: 107,
      NUMPAD_DECIMAL: 110,
      NUMPAD_DIVIDE: 111,
      NUMPAD_ENTER: 108,
      NUMPAD_MULTIPLY: 106,
      NUMPAD_SUBTRACT: 109,
      PAGE_DOWN: 34,
      PAGE_UP: 33,
      PERIOD: 190,
      RIGHT: 39,
      SPACE: 32,
      TAB: 9,
      UP: 38
    },

    buttonCode: {
      LEFT: 0,
      MIDDLE: 1,
      RIGHT: 2
    }
  });

  $.extend($.simulate.prototype, {

    simulateEvent: function simulateEvent(elem, type, options) {
      var event = this.createEvent(type, options);
      this.dispatchEvent(elem, type, event, options);
    },

    createEvent: function createEvent(type, options) {
      if (rkeyEvent.test(type)) {
        return this.keyEvent(type, options);
      }

      if (rmouseEvent.test(type)) {
        return this.mouseEvent(type, options);
      }
    },

    mouseEvent: function mouseEvent(type, options) {
      var event, eventDoc, doc, body;
      options = $.extend({
        bubbles: true,
        cancelable: type !== "mousemove",
        view: window,
        detail: 0,
        screenX: 0,
        screenY: 0,
        clientX: 1,
        clientY: 1,
        ctrlKey: false,
        altKey: false,
        shiftKey: false,
        metaKey: false,
        button: 0,
        relatedTarget: undefined
      }, options);

      if (document.createEvent) {
        event = document.createEvent("MouseEvents");
        event.initMouseEvent(type, options.bubbles, options.cancelable, options.view, options.detail, options.screenX, options.screenY, options.clientX, options.clientY, options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, options.relatedTarget || document.body.parentNode);

        // IE 9+ creates events with pageX and pageY set to 0.
        // Trying to modify the properties throws an error,
        // so we define getters to return the correct values.
        if (event.pageX === 0 && event.pageY === 0 && Object.defineProperty) {
          eventDoc = event.relatedTarget.ownerDocument || document;
          doc = eventDoc.documentElement;
          body = eventDoc.body;

          Object.defineProperty(event, "pageX", {
            get: function get() {
              return options.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
            }
          });
          Object.defineProperty(event, "pageY", {
            get: function get() {
              return options.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
            }
          });
        }
      } else if (document.createEventObject) {

        try {
          event = document.createEventObject(options);
        } catch (e) {
          event = document.createEventObject();
          $.extend(event, options);
        }

        // standards event.button uses constants defined here: http://msdn.microsoft.com/en-us/library/ie/ff974877(v=vs.85).aspx
        // old IE event.button uses constants defined here: http://msdn.microsoft.com/en-us/library/ie/ms533544(v=vs.85).aspx
        // so we actually need to map the standard back to oldIE
        event.button = {
          0: 1,
          1: 4,
          2: 2
        }[event.button] || (event.button === -1 ? 0 : event.button);
      }

      return event;
    },

    keyEvent: function keyEvent(type, options) {
      var event;
      options = $.extend({
        bubbles: true,
        cancelable: true,
        view: window,
        ctrlKey: false,
        altKey: false,
        shiftKey: false,
        metaKey: false,
        keyCode: 0,
        charCode: undefined
      }, options);

      if (document.createEvent) {
        try {
          event = document.createEvent("KeyEvents");
          event.initKeyEvent(type, options.bubbles, options.cancelable, options.view, options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.keyCode, options.charCode);
          // initKeyEvent throws an exception in WebKit
          // see: http://stackoverflow.com/questions/6406784/initkeyevent-keypress-only-works-in-firefox-need-a-cross-browser-solution
          // and also https://bugs.webkit.org/show_bug.cgi?id=13368
          // fall back to a generic event until we decide to implement initKeyboardEvent
        } catch (err) {
          event = document.createEvent("Events");
          event.initEvent(type, options.bubbles, options.cancelable);
          $.extend(event, {
            view: options.view,
            ctrlKey: options.ctrlKey,
            altKey: options.altKey,
            shiftKey: options.shiftKey,
            metaKey: options.metaKey,
            keyCode: options.keyCode,
            charCode: options.charCode
          });
        }
      } else if (document.createEventObject) {
        event = document.createEventObject();
        $.extend(event, options);
      }

      if (!!/msie [\w.]+/.exec(navigator.userAgent.toLowerCase()) || {}.toString.call(window.opera) === "[object Opera]") {
        event.keyCode = options.charCode > 0 ? options.charCode : options.keyCode;
        event.charCode = undefined;
      }

      return event;
    },

    dispatchEvent: function dispatchEvent(elem, type, event) {
      if (elem[type]) {
        elem[type]();
      } else if (elem.dispatchEvent) {
        elem.dispatchEvent(event);
      } else if (elem.fireEvent) {
        elem.fireEvent("on" + type, event);
      }
    },

    simulateFocus: function simulateFocus() {
      var focusinEvent,
          triggered = false,
          element = $(this.target);

      function trigger() {
        triggered = true;
      }

      element.bind("focus", trigger);
      element[0].focus();

      if (!triggered) {
        focusinEvent = $.Event("focusin");
        focusinEvent.preventDefault();
        element.trigger(focusinEvent);
        element.triggerHandler("focus");
      }
      element.unbind("focus", trigger);
    },

    simulateBlur: function simulateBlur() {
      var focusoutEvent,
          triggered = false,
          element = $(this.target);

      function trigger() {
        triggered = true;
      }

      element.bind("blur", trigger);
      element[0].blur();

      // blur events are async in IE
      setTimeout(function () {
        // IE won't let the blur occur if the window is inactive
        if (element[0].ownerDocument.activeElement === element[0]) {
          element[0].ownerDocument.body.focus();
        }

        // Firefox won't trigger events if the window is inactive
        // IE doesn't trigger events if we had to manually focus the body
        if (!triggered) {
          focusoutEvent = $.Event("focusout");
          focusoutEvent.preventDefault();
          element.trigger(focusoutEvent);
          element.triggerHandler("blur");
        }
        element.unbind("blur", trigger);
      }, 1);
    }
  });

  /** complex events **/

  function findCenter(elem) {
    var offset,
        document = $(elem.ownerDocument);
    elem = $(elem);
    offset = elem.offset();

    return {
      x: offset.left + elem.outerWidth() / 2 - document.scrollLeft(),
      y: offset.top + elem.outerHeight() / 2 - document.scrollTop()
    };
  }

  function findCorner(elem) {
    var offset,
        document = $(elem.ownerDocument);
    elem = $(elem);
    offset = elem.offset();

    return {
      x: offset.left - document.scrollLeft(),
      y: offset.top - document.scrollTop()
    };
  }

  $.extend($.simulate.prototype, {
    simulateDrag: function simulateDrag() {
      var i = 0,
          target = this.target,
          options = this.options,
          center = options.handle === "corner" ? findCorner(target) : findCenter(target),
          x = Math.floor(center.x),
          y = Math.floor(center.y),
          coord = { clientX: x, clientY: y },
          dx = options.dx || (options.x !== undefined ? options.x - x : 0),
          dy = options.dy || (options.y !== undefined ? options.y - y : 0),
          moves = options.moves || 3;

      this.simulateEvent(target, "mousedown", coord);

      for (; i < moves; i++) {
        x += dx / moves;
        y += dy / moves;

        coord = {
          clientX: Math.round(x),
          clientY: Math.round(y)
        };

        this.simulateEvent(target.ownerDocument, "mousemove", coord);
      }

      if ($.contains(document, target)) {
        this.simulateEvent(target, "mouseup", coord);
        this.simulateEvent(target, "click", coord);
      } else {
        this.simulateEvent(document, "mouseup", coord);
      }
    }
  });
})(jQuery);