modal.js

'use strict';

var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.0.0-alpha.4): modal.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

var Modal = (function ($) {

  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var NAME = 'modal';
  var VERSION = '4.0.0-alpha.4';
  var DATA_KEY = 'bs.modal';
  var EVENT_KEY = '.' + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var JQUERY_NO_CONFLICT = $.fn[NAME];
  var TRANSITION_DURATION = 300;
  var BACKDROP_TRANSITION_DURATION = 150;
  var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key

  var Default = {
    backdrop: true,
    keyboard: true,
    focus: true,
    show: true
  };

  var DefaultType = {
    backdrop: '(boolean|string)',
    keyboard: 'boolean',
    focus: 'boolean',
    show: 'boolean'
  };

  var Event = {
    HIDE: 'hide' + EVENT_KEY,
    HIDDEN: 'hidden' + EVENT_KEY,
    SHOW: 'show' + EVENT_KEY,
    SHOWN: 'shown' + EVENT_KEY,
    FOCUSIN: 'focusin' + EVENT_KEY,
    RESIZE: 'resize' + EVENT_KEY,
    CLICK_DISMISS: 'click.dismiss' + EVENT_KEY,
    KEYDOWN_DISMISS: 'keydown.dismiss' + EVENT_KEY,
    MOUSEUP_DISMISS: 'mouseup.dismiss' + EVENT_KEY,
    MOUSEDOWN_DISMISS: 'mousedown.dismiss' + EVENT_KEY,
    CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY
  };

  var ClassName = {
    SCROLLBAR_MEASURER: 'modal-scrollbar-measure',
    BACKDROP: 'modal-backdrop',
    OPEN: 'modal-open',
    FADE: 'fade',
    IN: 'in'
  };

  var Selector = {
    DIALOG: '.modal-dialog',
    DATA_TOGGLE: '[data-toggle="modal"]',
    DATA_DISMISS: '[data-dismiss="modal"]',
    FIXED_CONTENT: '.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed'
  };

  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

  var Modal = (function () {
    function Modal(element, config) {
      _classCallCheck(this, Modal);

      this._config = this._getConfig(config);
      this._element = element;
      this._dialog = $(element).find(Selector.DIALOG)[0];
      this._backdrop = null;
      this._isShown = false;
      this._isBodyOverflowing = false;
      this._ignoreBackdropClick = false;
      this._originalBodyPadding = 0;
      this._scrollbarWidth = 0;
    }

    /**
     * ------------------------------------------------------------------------
     * Data Api implementation
     * ------------------------------------------------------------------------
     */

    // getters

    _createClass(Modal, [{
      key: 'toggle',

      // public

      value: function toggle(relatedTarget) {
        return this._isShown ? this.hide() : this.show(relatedTarget);
      }
    }, {
      key: 'show',
      value: function show(relatedTarget) {
        var _this = this;

        var showEvent = $.Event(Event.SHOW, {
          relatedTarget: relatedTarget
        });

        $(this._element).trigger(showEvent);

        if (this._isShown || showEvent.isDefaultPrevented()) {
          return;
        }

        this._isShown = true;

        this._checkScrollbar();
        this._setScrollbar();

        $(document.body).addClass(ClassName.OPEN);

        this._setEscapeEvent();
        this._setResizeEvent();

        $(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, $.proxy(this.hide, this));

        $(this._dialog).on(Event.MOUSEDOWN_DISMISS, function () {
          $(_this._element).one(Event.MOUSEUP_DISMISS, function (event) {
            if ($(event.target).is(_this._element)) {
              _this._ignoreBackdropClick = true;
            }
          });
        });

        this._showBackdrop($.proxy(this._showElement, this, relatedTarget));
      }
    }, {
      key: 'hide',
      value: function hide(event) {
        if (event) {
          event.preventDefault();
        }

        var hideEvent = $.Event(Event.HIDE);

        $(this._element).trigger(hideEvent);

        if (!this._isShown || hideEvent.isDefaultPrevented()) {
          return;
        }

        this._isShown = false;

        this._setEscapeEvent();
        this._setResizeEvent();

        $(document).off(Event.FOCUSIN);

        $(this._element).removeClass(ClassName.IN);

        $(this._element).off(Event.CLICK_DISMISS);
        $(this._dialog).off(Event.MOUSEDOWN_DISMISS);

        if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {

          $(this._element).one(Util.TRANSITION_END, $.proxy(this._hideModal, this)).emulateTransitionEnd(TRANSITION_DURATION);
        } else {
          this._hideModal();
        }
      }
    }, {
      key: 'dispose',
      value: function dispose() {
        $.removeData(this._element, DATA_KEY);

        $(window).off(EVENT_KEY);
        $(document).off(EVENT_KEY);
        $(this._element).off(EVENT_KEY);
        $(this._backdrop).off(EVENT_KEY);

        this._config = null;
        this._element = null;
        this._dialog = null;
        this._backdrop = null;
        this._isShown = null;
        this._isBodyOverflowing = null;
        this._ignoreBackdropClick = null;
        this._originalBodyPadding = null;
        this._scrollbarWidth = null;
      }

      // private

    }, {
      key: '_getConfig',
      value: function _getConfig(config) {
        config = $.extend({}, Default, config);
        Util.typeCheckConfig(NAME, config, DefaultType);
        return config;
      }
    }, {
      key: '_showElement',
      value: function _showElement(relatedTarget) {
        var _this2 = this;

        var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);

        if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
          // don't move modals dom position
          document.body.appendChild(this._element);
        }

        this._element.style.display = 'block';
        this._element.removeAttribute('aria-hidden');
        this._element.scrollTop = 0;

        if (transition) {
          Util.reflow(this._element);
        }

        $(this._element).addClass(ClassName.IN);

        if (this._config.focus) {
          this._enforceFocus();
        }

        var shownEvent = $.Event(Event.SHOWN, {
          relatedTarget: relatedTarget
        });

        var transitionComplete = function transitionComplete() {
          if (_this2._config.focus) {
            _this2._element.focus();
          }
          $(_this2._element).trigger(shownEvent);
        };

        if (transition) {
          $(this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(TRANSITION_DURATION);
        } else {
          transitionComplete();
        }
      }
    }, {
      key: '_enforceFocus',
      value: function _enforceFocus() {
        var _this3 = this;

        $(document).off(Event.FOCUSIN) // guard against infinite focus loop
        .on(Event.FOCUSIN, function (event) {
          if (document !== event.target && _this3._element !== event.target && !$(_this3._element).has(event.target).length) {
            _this3._element.focus();
          }
        });
      }
    }, {
      key: '_setEscapeEvent',
      value: function _setEscapeEvent() {
        var _this4 = this;

        if (this._isShown && this._config.keyboard) {
          $(this._element).on(Event.KEYDOWN_DISMISS, function (event) {
            if (event.which === ESCAPE_KEYCODE) {
              _this4.hide();
            }
          });
        } else if (!this._isShown) {
          $(this._element).off(Event.KEYDOWN_DISMISS);
        }
      }
    }, {
      key: '_setResizeEvent',
      value: function _setResizeEvent() {
        if (this._isShown) {
          $(window).on(Event.RESIZE, $.proxy(this._handleUpdate, this));
        } else {
          $(window).off(Event.RESIZE);
        }
      }
    }, {
      key: '_hideModal',
      value: function _hideModal() {
        var _this5 = this;

        this._element.style.display = 'none';
        this._element.setAttribute('aria-hidden', 'true');
        this._showBackdrop(function () {
          $(document.body).removeClass(ClassName.OPEN);
          _this5._resetAdjustments();
          _this5._resetScrollbar();
          $(_this5._element).trigger(Event.HIDDEN);
        });
      }
    }, {
      key: '_removeBackdrop',
      value: function _removeBackdrop() {
        if (this._backdrop) {
          $(this._backdrop).remove();
          this._backdrop = null;
        }
      }
    }, {
      key: '_showBackdrop',
      value: function _showBackdrop(callback) {
        var _this6 = this;

        var animate = $(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';

        if (this._isShown && this._config.backdrop) {
          var doAnimate = Util.supportsTransitionEnd() && animate;

          this._backdrop = document.createElement('div');
          this._backdrop.className = ClassName.BACKDROP;

          if (animate) {
            $(this._backdrop).addClass(animate);
          }

          $(this._backdrop).appendTo(document.body);

          $(this._element).on(Event.CLICK_DISMISS, function (event) {
            if (_this6._ignoreBackdropClick) {
              _this6._ignoreBackdropClick = false;
              return;
            }
            if (event.target !== event.currentTarget) {
              return;
            }
            if (_this6._config.backdrop === 'static') {
              _this6._element.focus();
            } else {
              _this6.hide();
            }
          });

          if (doAnimate) {
            Util.reflow(this._backdrop);
          }

          $(this._backdrop).addClass(ClassName.IN);

          if (!callback) {
            return;
          }

          if (!doAnimate) {
            callback();
            return;
          }

          $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
        } else if (!this._isShown && this._backdrop) {
          $(this._backdrop).removeClass(ClassName.IN);

          var callbackRemove = function callbackRemove() {
            _this6._removeBackdrop();
            if (callback) {
              callback();
            }
          };

          if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
            $(this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
          } else {
            callbackRemove();
          }
        } else if (callback) {
          callback();
        }
      }

      // ----------------------------------------------------------------------
      // the following methods are used to handle overflowing modals
      // todo (fat): these should probably be refactored out of modal.js
      // ----------------------------------------------------------------------

    }, {
      key: '_handleUpdate',
      value: function _handleUpdate() {
        this._adjustDialog();
      }
    }, {
      key: '_adjustDialog',
      value: function _adjustDialog() {
        var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;

        if (!this._isBodyOverflowing && isModalOverflowing) {
          this._element.style.paddingLeft = this._scrollbarWidth + 'px';
        }

        if (this._isBodyOverflowing && !isModalOverflowing) {
          this._element.style.paddingRight = this._scrollbarWidth + 'px';
        }
      }
    }, {
      key: '_resetAdjustments',
      value: function _resetAdjustments() {
        this._element.style.paddingLeft = '';
        this._element.style.paddingRight = '';
      }
    }, {
      key: '_checkScrollbar',
      value: function _checkScrollbar() {
        this._isBodyOverflowing = document.body.clientWidth < window.innerWidth;
        this._scrollbarWidth = this._getScrollbarWidth();
      }
    }, {
      key: '_setScrollbar',
      value: function _setScrollbar() {
        var bodyPadding = parseInt($(Selector.FIXED_CONTENT).css('padding-right') || 0, 10);

        this._originalBodyPadding = document.body.style.paddingRight || '';

        if (this._isBodyOverflowing) {
          document.body.style.paddingRight = bodyPadding + this._scrollbarWidth + 'px';
        }
      }
    }, {
      key: '_resetScrollbar',
      value: function _resetScrollbar() {
        document.body.style.paddingRight = this._originalBodyPadding;
      }
    }, {
      key: '_getScrollbarWidth',
      value: function _getScrollbarWidth() {
        // thx d.walsh
        var scrollDiv = document.createElement('div');
        scrollDiv.className = ClassName.SCROLLBAR_MEASURER;
        document.body.appendChild(scrollDiv);
        var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
        document.body.removeChild(scrollDiv);
        return scrollbarWidth;
      }

      // static

    }], [{
      key: '_jQueryInterface',
      value: function _jQueryInterface(config, relatedTarget) {
        return this.each(function () {
          var data = $(this).data(DATA_KEY);
          var _config = $.extend({}, Modal.Default, $(this).data(), typeof config === 'object' && config);

          if (!data) {
            data = new Modal(this, _config);
            $(this).data(DATA_KEY, data);
          }

          if (typeof config === 'string') {
            if (data[config] === undefined) {
              throw new Error('No method named "' + config + '"');
            }
            data[config](relatedTarget);
          } else if (_config.show) {
            data.show(relatedTarget);
          }
        });
      }
    }, {
      key: 'VERSION',
      get: function get() {
        return VERSION;
      }
    }, {
      key: 'Default',
      get: function get() {
        return Default;
      }
    }]);

    return Modal;
  })();

  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
    var _this7 = this;

    var target = undefined;
    var selector = Util.getSelectorFromElement(this);

    if (selector) {
      target = $(selector)[0];
    }

    var config = $(target).data(DATA_KEY) ? 'toggle' : $.extend({}, $(target).data(), $(this).data());

    if (this.tagName === 'A') {
      event.preventDefault();
    }

    var $target = $(target).one(Event.SHOW, function (showEvent) {
      if (showEvent.isDefaultPrevented()) {
        // only register focus restorer if modal will actually get shown
        return;
      }

      $target.one(Event.HIDDEN, function () {
        if ($(_this7).is(':visible')) {
          _this7.focus();
        }
      });
    });

    Modal._jQueryInterface.call($(target), config, this);
  });

  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   */

  $.fn[NAME] = Modal._jQueryInterface;
  $.fn[NAME].Constructor = Modal;
  $.fn[NAME].noConflict = function () {
    $.fn[NAME] = JQUERY_NO_CONFLICT;
    return Modal._jQueryInterface;
  };

  return Modal;
})(jQuery);
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