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third-party/angularjs/angular-1.6.5/angular-touch.js 1 location


 * (c) 2010-2017 Google, Inc. http://angularjs.org
 * License: MIT
 */
(function(window, angular) {'use strict';

/* global ngTouchClickDirectiveFactory: false */

/**
 * @ngdoc module
 * @name ngTouch
 * @description
 *
 * # ngTouch
 *
 * The `ngTouch` module provides touch events and other helpers for touch-enabled devices.
 * The implementation is based on jQuery Mobile touch event handling
 * ([jquerymobile.com](http://jquerymobile.com/)).
 *
 *
 * See {@link ngTouch.$swipe `$swipe`} for usage.
 *
 * <div doc-module-components="ngTouch"></div>
 *
 */

// define ngTouch module
/* global -ngTouch */
var ngTouch = angular.module('ngTouch', []);

ngTouch.info({ angularVersion: '1.6.5' });

ngTouch.provider('$touch', $TouchProvider);

function nodeName_(element) {
  return angular.lowercase(element.nodeName || (element[0] && element[0].nodeName));
}

/**
 * @ngdoc provider
 * @name $touchProvider
 *
 * @description
 * The `$touchProvider` allows enabling / disabling {@link ngTouch.ngClick ngTouch's ngClick directive}.
 */
$TouchProvider.$inject = ['$provide', '$compileProvider'];
function $TouchProvider($provide, $compileProvider) {

  /**
   * @ngdoc method
   * @name  $touchProvider#ngClickOverrideEnabled
   *
   * @param {boolean=} enabled update the ngClickOverrideEnabled state if provided, otherwise just return the
   * current ngClickOverrideEnabled state
   * @returns {*} current value if used as getter or itself (chaining) if used as setter
   *
   * @kind function
   *
   * @description
   * Call this method to enable/disable {@link ngTouch.ngClick ngTouch's ngClick directive}. If enabled,
   * the default ngClick directive will be replaced by a version that eliminates the 300ms delay for
   * click events on browser for touch-devices.
   *
   * The default is `false`.
   *
   */
  var ngClickOverrideEnabled = false;
  var ngClickDirectiveAdded = false;
  // eslint-disable-next-line no-invalid-this
  this.ngClickOverrideEnabled = function(enabled) {
    if (angular.isDefined(enabled)) {

      if (enabled && !ngClickDirectiveAdded) {
        ngClickDirectiveAdded = true;

        // Use this to identify the correct directive in the delegate
        ngTouchClickDirectiveFactory.$$moduleName = 'ngTouch';
        $compileProvider.directive('ngClick', ngTouchClickDirectiveFactory);

        $provide.decorator('ngClickDirective', ['$delegate', function($delegate) {
          if (ngClickOverrideEnabled) {
            // drop the default ngClick directive
            $delegate.shift();
          } else {
            // drop the ngTouch ngClick directive if the override has been re-disabled (because
            // we cannot de-register added directives)
            var i = $delegate.length - 1;
            while (i >= 0) {
              if ($delegate[i].$$moduleName === 'ngTouch') {
                $delegate.splice(i, 1);
                break;
              }
              i--;
            }
          }

          return $delegate;
        }]);
      }

      ngClickOverrideEnabled = enabled;
      return this;
    }

    return ngClickOverrideEnabled;
  };

  /**
  * @ngdoc service
  * @name $touch
  * @kind object
  *
  * @description
  * Provides the {@link ngTouch.$touch#ngClickOverrideEnabled `ngClickOverrideEnabled`} method.
  *
  */
  // eslint-disable-next-line no-invalid-this
  this.$get = function() {
    return {
      /**
       * @ngdoc method
       * @name  $touch#ngClickOverrideEnabled
       *
       * @returns {*} current value of `ngClickOverrideEnabled` set in the {@link ngTouch.$touchProvider $touchProvider},
       * i.e. if {@link ngTouch.ngClick ngTouch's ngClick} directive is enabled.
       *
       * @kind function
       */
      ngClickOverrideEnabled: function() {
        return ngClickOverrideEnabled;
      }
    };
  };

}

/* global ngTouch: false */

    /**
     * @ngdoc service
     * @name $swipe
     *
     * @description
     * The `$swipe` service is a service that abstracts the messier details of hold-and-drag swipe
     * behavior, to make implementing swipe-related directives more convenient.
     *
     * Requires the {@link ngTouch `ngTouch`} module to be installed.
     *
     * `$swipe` is used by the `ngSwipeLeft` and `ngSwipeRight` directives in `ngTouch`.
     *
     * # Usage
     * The `$swipe` service is an object with a single method: `bind`. `bind` takes an element
     * which is to be watched for swipes, and an object with four handler functions. See the
     * documentation for `bind` below.
     */

ngTouch.factory('$swipe', [function() {
  // The total distance in any direction before we make the call on swipe vs. scroll.
  var MOVE_BUFFER_RADIUS = 10;

  var POINTER_EVENTS = {
    'mouse': {
      start: 'mousedown',
      move: 'mousemove',
      end: 'mouseup'
    },
    'touch': {
      start: 'touchstart',
      move: 'touchmove',
      end: 'touchend',
      cancel: 'touchcancel'
    },
    'pointer': {
      start: 'pointerdown',
      move: 'pointermove',
      end: 'pointerup',
      cancel: 'pointercancel'
    }
  };

  function getCoordinates(event) {
    var originalEvent = event.originalEvent || event;
    var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
    var e = (originalEvent.changedTouches && originalEvent.changedTouches[0]) || touches[0];

    return {
      x: e.clientX,
      y: e.clientY
    };
  }

  function getEvents(pointerTypes, eventType) {
    var res = [];
    angular.forEach(pointerTypes, function(pointerType) {
      var eventName = POINTER_EVENTS[pointerType][eventType];
      if (eventName) {
        res.push(eventName);
      }
    });
    return res.join(' ');
  }

  return {
    /**
     * @ngdoc method
     * @name $swipe#bind
     *
     * @description
     * The main method of `$swipe`. It takes an element to be watched for swipe motions, and an
     * object containing event handlers.
     * The pointer types that should be used can be specified via the optional
     * third argument, which is an array of strings `'mouse'`, `'touch'` and `'pointer'`. By default,
     * `$swipe` will listen for `mouse`, `touch` and `pointer` events.
     *
     * The four events are `start`, `move`, `end`, and `cancel`. `start`, `move`, and `end`
     * receive as a parameter a coordinates object of the form `{ x: 150, y: 310 }` and the raw
     * `event`. `cancel` receives the raw `event` as its single parameter.
     *
     * `start` is called on either `mousedown`, `touchstart` or `pointerdown`. After this event, `$swipe` is
     * watching for `touchmove`, `mousemove` or `pointermove` events. These events are ignored until the total
     * distance moved in either dimension exceeds a small threshold.
     *
     * Once this threshold is exceeded, either the horizontal or vertical delta is greater.
     * - If the horizontal distance is greater, this is a swipe and `move` and `end` events follow.
     * - If the vertical distance is greater, this is a scroll, and we let the browser take over.
     *   A `cancel` event is sent.
     *
     * `move` is called on `mousemove`, `touchmove` and `pointermove` after the above logic has determined that
     * a swipe is in progress.
     *
     * `end` is called when a swipe is successfully completed with a `touchend`, `mouseup` or `pointerup`.
     *
     * `cancel` is called either on a `touchcancel` or `pointercancel`  from the browser, or when we begin scrolling
     * as described above.
     *
     */
    bind: function(element, eventHandlers, pointerTypes) {
      // Absolute total movement, used to control swipe vs. scroll.
      var totalX, totalY;
      // Coordinates of the start position.
      var startCoords;
      // Last event's position.
      var lastPos;
      // Whether a swipe is active.
      var active = false;

      pointerTypes = pointerTypes || ['mouse', 'touch', 'pointer'];
      element.on(getEvents(pointerTypes, 'start'), function(event) {
        startCoords = getCoordinates(event);
        active = true;
        totalX = 0;
        totalY = 0;
        lastPos = startCoords;
        if (eventHandlers['start']) {
          eventHandlers['start'](startCoords, event);
        }
      });
      var events = getEvents(pointerTypes, 'cancel');
      if (events) {
        element.on(events, function(event) {
          active = false;
          if (eventHandlers['cancel']) {
            eventHandlers['cancel'](event);
          }
        });
      }

      element.on(getEvents(pointerTypes, 'move'), function(event) {
        if (!active) return;

        // Android will send a touchcancel if it thinks we're starting to scroll.
        // So when the total distance (+ or - or both) exceeds 10px in either direction,
        // we either:
        // - On totalX > totalY, we send preventDefault() and treat this as a swipe.
        // - On totalY > totalX, we let the browser handle it as a scroll.

        if (!startCoords) return;
        var coords = getCoordinates(event);

        totalX += Math.abs(coords.x - lastPos.x);
        totalY += Math.abs(coords.y - lastPos.y);

        lastPos = coords;

        if (totalX < MOVE_BUFFER_RADIUS && totalY < MOVE_BUFFER_RADIUS) {
          return;
        }

        // One of totalX or totalY has exceeded the buffer, so decide on swipe vs. scroll.
        if (totalY > totalX) {
          // Allow native scrolling to take over.
          active = false;
          if (eventHandlers['cancel']) {
            eventHandlers['cancel'](event);
          }
          return;
        } else {
          // Prevent the browser from scrolling.
          event.preventDefault();
          if (eventHandlers['move']) {
            eventHandlers['move'](coords, event);
          }
        }
      });

      element.on(getEvents(pointerTypes, 'end'), function(event) {
        if (!active) return;
        active = false;
        if (eventHandlers['end']) {
          eventHandlers['end'](getCoordinates(event), event);
        }
      });
    }
  };
}]);

/* global ngTouch: false,
  nodeName_: false
*/

/**
 * @ngdoc directive
 * @name ngClick
 * @deprecated
 * sinceVersion="v1.5.0"
 * This directive is deprecated and **disabled** by default.
 * The directive will receive no further support and might be removed from future releases.
 * If you need the directive, you can enable it with the {@link ngTouch.$touchProvider $touchProvider#ngClickOverrideEnabled}
 * function. We also recommend that you migrate to [FastClick](https://github.com/ftlabs/fastclick).
 * To learn more about the 300ms delay, this [Telerik article](http://developer.telerik.com/featured/300-ms-click-delay-ios-8/)
 * gives a good overview.
 *
 * @description
 * A more powerful replacement for the default ngClick designed to be used on touchscreen
 * devices. Most mobile browsers wait about 300ms after a tap-and-release before sending
 * the click event. This version handles them immediately, and then prevents the
 * following click event from propagating.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * This directive can fall back to using an ordinary click event, and so works on desktop
 * browsers as well as mobile.
 *
 * This directive also sets the CSS class `ng-click-active` while the element is being held
 * down (by a mouse click or touch) so you can restyle the depressed element if you wish.
 *
 * @element ANY
 * @param {expression} ngClick {@link guide/expression Expression} to evaluate
 * upon tap. (Event object is available as `$event`)
 *
 * @example
    <example module="ngClickExample" deps="angular-touch.js" name="ng-touch-ng-click">
      <file name="index.html">
        <button ng-click="count = count + 1" ng-init="count=0">
          Increment
        </button>
        count: {{ count }}
      </file>
      <file name="script.js">
        angular.module('ngClickExample', ['ngTouch']);
      </file>
    </example>
 */

var ngTouchClickDirectiveFactory = ['$parse', '$timeout', '$rootElement',
    function($parse, $timeout, $rootElement) {
  var TAP_DURATION = 750; // Shorter than 750ms is a tap, longer is a taphold or drag.
  var MOVE_TOLERANCE = 12; // 12px seems to work in most mobile browsers.
  var PREVENT_DURATION = 2500; // 2.5 seconds maximum from preventGhostClick call to click
  var CLICKBUSTER_THRESHOLD = 25; // 25 pixels in any dimension is the limit for busting clicks.

  var ACTIVE_CLASS_NAME = 'ng-click-active';
  var lastPreventedTime;
  var touchCoordinates;
  var lastLabelClickCoordinates;


  // TAP EVENTS AND GHOST CLICKS
  //
  // Why tap events?
  // Mobile browsers detect a tap, then wait a moment (usually ~300ms) to see if you're
  // double-tapping, and then fire a click event.
  //
  // This delay sucks and makes mobile apps feel unresponsive.
  // So we detect touchstart, touchcancel and touchend ourselves and determine when
  // the user has tapped on something.
  //
  // What happens when the browser then generates a click event?
  // The browser, of course, also detects the tap and fires a click after a delay. This results in
  // tapping/clicking twice. We do "clickbusting" to prevent it.
  //
  // How does it work?
  // We attach global touchstart and click handlers, that run during the capture (early) phase.
  // So the sequence for a tap is:
  // - global touchstart: Sets an "allowable region" at the point touched.
  // - element's touchstart: Starts a touch
  // (- touchcancel ends the touch, no click follows)
  // - element's touchend: Determines if the tap is valid (didn't move too far away, didn't hold
  //   too long) and fires the user's tap handler. The touchend also calls preventGhostClick().
  // - preventGhostClick() removes the allowable region the global touchstart created.
  // - The browser generates a click event.
  // - The global click handler catches the click, and checks whether it was in an allowable region.
  //     - If preventGhostClick was called, the region will have been removed, the click is busted.
  //     - If the region is still there, the click proceeds normally. Therefore clicks on links and
  //       other elements without ngTap on them work normally.
  //
  // This is an ugly, terrible hack!
  // Yeah, tell me about it. The alternatives are using the slow click events, or making our users
  // deal with the ghost clicks, so I consider this the least of evils. Fortunately Angular
  // encapsulates this ugly logic away from the user.
  //
  // Why not just put click handlers on the element?
  // We do that too, just to be sure. If the tap event caused the DOM to change,
  // it is possible another element is now in that position. To take account for these possibly
  // distinct elements, the handlers are global and care only about coordinates.

  // Checks if the coordinates are close enough to be within the region.
  function hit(x1, y1, x2, y2) {
    return Math.abs(x1 - x2) < CLICKBUSTER_THRESHOLD && Math.abs(y1 - y2) < CLICKBUSTER_THRESHOLD;
  }

  // Checks a list of allowable regions against a click location.
  // Returns true if the click should be allowed.
  // Splices out the allowable region from the list after it has been used.
  function checkAllowableRegions(touchCoordinates, x, y) {
    for (var i = 0; i < touchCoordinates.length; i += 2) {
      if (hit(touchCoordinates[i], touchCoordinates[i + 1], x, y)) {
        touchCoordinates.splice(i, i + 2);
        return true; // allowable region
      }
    }
    return false; // No allowable region; bust it.
  }

  // Global click handler that prevents the click if it's in a bustable zone and preventGhostClick
  // was called recently.
  function onClick(event) {
    if (Date.now() - lastPreventedTime > PREVENT_DURATION) {
      return; // Too old.
    }

    var touches = event.touches && event.touches.length ? event.touches : [event];
    var x = touches[0].clientX;
    var y = touches[0].clientY;
    // Work around desktop Webkit quirk where clicking a label will fire two clicks (on the label
    // and on the input element). Depending on the exact browser, this second click we don't want
    // to bust has either (0,0), negative coordinates, or coordinates equal to triggering label
    // click event
    if (x < 1 && y < 1) {
      return; // offscreen
    }
    if (lastLabelClickCoordinates &&
        lastLabelClickCoordinates[0] === x && lastLabelClickCoordinates[1] === y) {
      return; // input click triggered by label click
    }
    // reset label click coordinates on first subsequent click
    if (lastLabelClickCoordinates) {
      lastLabelClickCoordinates = null;
    }
    // remember label click coordinates to prevent click busting of trigger click event on input
    if (nodeName_(event.target) === 'label') {
      lastLabelClickCoordinates = [x, y];
    }

    // Look for an allowable region containing this click.
    // If we find one, that means it was created by touchstart and not removed by
    // preventGhostClick, so we don't bust it.
    if (checkAllowableRegions(touchCoordinates, x, y)) {
      return;
    }

    // If we didn't find an allowable region, bust the click.
    event.stopPropagation();
    event.preventDefault();

    // Blur focused form elements
    if (event.target && event.target.blur) {
      event.target.blur();
    }
  }


  // Global touchstart handler that creates an allowable region for a click event.
  // This allowable region can be removed by preventGhostClick if we want to bust it.
  function onTouchStart(event) {
    var touches = event.touches && event.touches.length ? event.touches : [event];
    var x = touches[0].clientX;
    var y = touches[0].clientY;
    touchCoordinates.push(x, y);

    $timeout(function() {
      // Remove the allowable region.
      for (var i = 0; i < touchCoordinates.length; i += 2) {
        if (touchCoordinates[i] === x && touchCoordinates[i + 1] === y) {
          touchCoordinates.splice(i, i + 2);
          return;
        }
      }
    }, PREVENT_DURATION, false);
  }

  // On the first call, attaches some event handlers. Then whenever it gets called, it creates a
  // zone around the touchstart where clicks will get busted.
  function preventGhostClick(x, y) {
    if (!touchCoordinates) {
      $rootElement[0].addEventListener('click', onClick, true);
      $rootElement[0].addEventListener('touchstart', onTouchStart, true);
      touchCoordinates = [];
    }

    lastPreventedTime = Date.now();

    checkAllowableRegions(touchCoordinates, x, y);
  }

  // Actual linking function.
  return function(scope, element, attr) {
    var clickHandler = $parse(attr.ngClick),
        tapping = false,
        tapElement,  // Used to blur the element after a tap.
        startTime,   // Used to check if the tap was held too long.
        touchStartX,
        touchStartY;

    function resetState() {
      tapping = false;
      element.removeClass(ACTIVE_CLASS_NAME);
    }

    element.on('touchstart', function(event) {
      tapping = true;
      tapElement = event.target ? event.target : event.srcElement; // IE uses srcElement.
      // Hack for Safari, which can target text nodes instead of containers.
      if (tapElement.nodeType === 3) {
        tapElement = tapElement.parentNode;
      }

      element.addClass(ACTIVE_CLASS_NAME);

      startTime = Date.now();

      // Use jQuery originalEvent
      var originalEvent = event.originalEvent || event;
      var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
      var e = touches[0];
      touchStartX = e.clientX;
      touchStartY = e.clientY;
    });

    element.on('touchcancel', function(event) {
      resetState();
    });

    element.on('touchend', function(event) {
      var diff = Date.now() - startTime;

      // Use jQuery originalEvent
      var originalEvent = event.originalEvent || event;
      var touches = (originalEvent.changedTouches && originalEvent.changedTouches.length) ?
          originalEvent.changedTouches :
          ((originalEvent.touches && originalEvent.touches.length) ? originalEvent.touches : [originalEvent]);
      var e = touches[0];
      var x = e.clientX;
      var y = e.clientY;
      var dist = Math.sqrt(Math.pow(x - touchStartX, 2) + Math.pow(y - touchStartY, 2));

      if (tapping && diff < TAP_DURATION && dist < MOVE_TOLERANCE) {
        // Call preventGhostClick so the clickbuster will catch the corresponding click.
        preventGhostClick(x, y);

        // Blur the focused element (the button, probably) before firing the callback.
        // This doesn't work perfectly on Android Chrome, but seems to work elsewhere.
        // I couldn't get anything to work reliably on Android Chrome.
        if (tapElement) {
          tapElement.blur();
        }

        if (!angular.isDefined(attr.disabled) || attr.disabled === false) {
          element.triggerHandler('click', [event]);
        }
      }

      resetState();
    });

    // Hack for iOS Safari's benefit. It goes searching for onclick handlers and is liable to click
    // something else nearby.
    element.onclick = function(event) { };

    // Actual click handler.
    // There are three different kinds of clicks, only two of which reach this point.
    // - On desktop browsers without touch events, their clicks will always come here.
    // - On mobile browsers, the simulated "fast" click will call this.
    // - But the browser's follow-up slow click will be "busted" before it reaches this handler.
    // Therefore it's safe to use this directive on both mobile and desktop.
    element.on('click', function(event, touchend) {
      scope.$apply(function() {
        clickHandler(scope, {$event: (touchend || event)});
      });
    });

    element.on('mousedown', function(event) {
      element.addClass(ACTIVE_CLASS_NAME);
    });

    element.on('mousemove mouseup', function(event) {
      element.removeClass(ACTIVE_CLASS_NAME);
    });

  };
}];

/* global ngTouch: false */

/**
 * @ngdoc directive
 * @name ngSwipeLeft
 *
 * @description
 * Specify custom behavior when an element is swiped to the left on a touchscreen device.
 * A leftward swipe is a quick, right-to-left slide of the finger.
 * Though ngSwipeLeft is designed for touch-based devices, it will work with a mouse click and drag
 * too.
 *
 * To disable the mouse click and drag functionality, add `ng-swipe-disable-mouse` to
 * the `ng-swipe-left` or `ng-swipe-right` DOM Element.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * @element ANY
 * @param {expression} ngSwipeLeft {@link guide/expression Expression} to evaluate
 * upon left swipe. (Event object is available as `$event`)
 *
 * @example
    <example module="ngSwipeLeftExample" deps="angular-touch.js" name="ng-swipe-left">
      <file name="index.html">
        <div ng-show="!showActions" ng-swipe-left="showActions = true">
          Some list content, like an email in the inbox
        </div>
        <div ng-show="showActions" ng-swipe-right="showActions = false">
          <button ng-click="reply()">Reply</button>
          <button ng-click="delete()">Delete</button>
        </div>
      </file>
      <file name="script.js">
        angular.module('ngSwipeLeftExample', ['ngTouch']);
      </file>
    </example>
 */

/**
 * @ngdoc directive
 * @name ngSwipeRight
 *
 * @description
 * Specify custom behavior when an element is swiped to the right on a touchscreen device.
 * A rightward swipe is a quick, left-to-right slide of the finger.
 * Though ngSwipeRight is designed for touch-based devices, it will work with a mouse click and drag
 * too.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * @element ANY
 * @param {expression} ngSwipeRight {@link guide/expression Expression} to evaluate
 * upon right swipe. (Event object is available as `$event`)
 *
 * @example
    <example module="ngSwipeRightExample" deps="angular-touch.js" name="ng-swipe-right">
      <file name="index.html">
        <div ng-show="!showActions" ng-swipe-left="showActions = true">
          Some list content, like an email in the inbox
        </div>
        <div ng-show="showActions" ng-swipe-right="showActions = false">
          <button ng-click="reply()">Reply</button>
          <button ng-click="delete()">Delete</button>
        </div>
      </file>
      <file name="script.js">
        angular.module('ngSwipeRightExample', ['ngTouch']);
      </file>
    </example>
 */

function makeSwipeDirective(directiveName, direction, eventName) {
  ngTouch.directive(directiveName, ['$parse', '$swipe', function($parse, $swipe) {
    // The maximum vertical delta for a swipe should be less than 75px.
    var MAX_VERTICAL_DISTANCE = 75;
    // Vertical distance should not be more than a fraction of the horizontal distance.
    var MAX_VERTICAL_RATIO = 0.3;
    // At least a 30px lateral motion is necessary for a swipe.
    var MIN_HORIZONTAL_DISTANCE = 30;

    return function(scope, element, attr) {
      var swipeHandler = $parse(attr[directiveName]);

      var startCoords, valid;

      function validSwipe(coords) {
        // Check that it's within the coordinates.
        // Absolute vertical distance must be within tolerances.
        // Horizontal distance, we take the current X - the starting X.
        // This is negative for leftward swipes and positive for rightward swipes.
        // After multiplying by the direction (-1 for left, +1 for right), legal swipes
        // (ie. same direction as the directive wants) will have a positive delta and
        // illegal ones a negative delta.
        // Therefore this delta must be positive, and larger than the minimum.
        if (!startCoords) return false;
        var deltaY = Math.abs(coords.y - startCoords.y);
        var deltaX = (coords.x - startCoords.x) * direction;
        return valid && // Short circuit for already-invalidated swipes.
            deltaY < MAX_VERTICAL_DISTANCE &&
            deltaX > 0 &&
            deltaX > MIN_HORIZONTAL_DISTANCE &&
            deltaY / deltaX < MAX_VERTICAL_RATIO;
      }

      var pointerTypes = ['touch'];
      if (!angular.isDefined(attr['ngSwipeDisableMouse'])) {
        pointerTypes.push('mouse');
      }
      $swipe.bind(element, {
        'start': function(coords, event) {
          startCoords = coords;
          valid = true;
        },
        'cancel': function(event) {
          valid = false;
        },
        'end': function(coords, event) {
          if (validSwipe(coords)) {
            scope.$apply(function() {
              element.triggerHandler(eventName);
              swipeHandler(scope, {$event: event});
            });
          }
        }
      }, pointerTypes);
    };
  }]);
}

// Left is negative X-coordinate, right is positive.
makeSwipeDirective('ngSwipeLeft', -1, 'swipeleft');
makeSwipeDirective('ngSwipeRight', 1, 'swiperight');



})(window, window.angular);


third-party/angularjs/angular-1.6.4/angular-touch.js 1 location


 * (c) 2010-2017 Google, Inc. http://angularjs.org
 * License: MIT
 */
(function(window, angular) {'use strict';

/* global ngTouchClickDirectiveFactory: false */

/**
 * @ngdoc module
 * @name ngTouch
 * @description
 *
 * # ngTouch
 *
 * The `ngTouch` module provides touch events and other helpers for touch-enabled devices.
 * The implementation is based on jQuery Mobile touch event handling
 * ([jquerymobile.com](http://jquerymobile.com/)).
 *
 *
 * See {@link ngTouch.$swipe `$swipe`} for usage.
 *
 * <div doc-module-components="ngTouch"></div>
 *
 */

// define ngTouch module
/* global -ngTouch */
var ngTouch = angular.module('ngTouch', []);

ngTouch.info({ angularVersion: '1.6.4' });

ngTouch.provider('$touch', $TouchProvider);

function nodeName_(element) {
  return angular.lowercase(element.nodeName || (element[0] && element[0].nodeName));
}

/**
 * @ngdoc provider
 * @name $touchProvider
 *
 * @description
 * The `$touchProvider` allows enabling / disabling {@link ngTouch.ngClick ngTouch's ngClick directive}.
 */
$TouchProvider.$inject = ['$provide', '$compileProvider'];
function $TouchProvider($provide, $compileProvider) {

  /**
   * @ngdoc method
   * @name  $touchProvider#ngClickOverrideEnabled
   *
   * @param {boolean=} enabled update the ngClickOverrideEnabled state if provided, otherwise just return the
   * current ngClickOverrideEnabled state
   * @returns {*} current value if used as getter or itself (chaining) if used as setter
   *
   * @kind function
   *
   * @description
   * Call this method to enable/disable {@link ngTouch.ngClick ngTouch's ngClick directive}. If enabled,
   * the default ngClick directive will be replaced by a version that eliminates the 300ms delay for
   * click events on browser for touch-devices.
   *
   * The default is `false`.
   *
   */
  var ngClickOverrideEnabled = false;
  var ngClickDirectiveAdded = false;
  // eslint-disable-next-line no-invalid-this
  this.ngClickOverrideEnabled = function(enabled) {
    if (angular.isDefined(enabled)) {

      if (enabled && !ngClickDirectiveAdded) {
        ngClickDirectiveAdded = true;

        // Use this to identify the correct directive in the delegate
        ngTouchClickDirectiveFactory.$$moduleName = 'ngTouch';
        $compileProvider.directive('ngClick', ngTouchClickDirectiveFactory);

        $provide.decorator('ngClickDirective', ['$delegate', function($delegate) {
          if (ngClickOverrideEnabled) {
            // drop the default ngClick directive
            $delegate.shift();
          } else {
            // drop the ngTouch ngClick directive if the override has been re-disabled (because
            // we cannot de-register added directives)
            var i = $delegate.length - 1;
            while (i >= 0) {
              if ($delegate[i].$$moduleName === 'ngTouch') {
                $delegate.splice(i, 1);
                break;
              }
              i--;
            }
          }

          return $delegate;
        }]);
      }

      ngClickOverrideEnabled = enabled;
      return this;
    }

    return ngClickOverrideEnabled;
  };

  /**
  * @ngdoc service
  * @name $touch
  * @kind object
  *
  * @description
  * Provides the {@link ngTouch.$touch#ngClickOverrideEnabled `ngClickOverrideEnabled`} method.
  *
  */
  // eslint-disable-next-line no-invalid-this
  this.$get = function() {
    return {
      /**
       * @ngdoc method
       * @name  $touch#ngClickOverrideEnabled
       *
       * @returns {*} current value of `ngClickOverrideEnabled` set in the {@link ngTouch.$touchProvider $touchProvider},
       * i.e. if {@link ngTouch.ngClick ngTouch's ngClick} directive is enabled.
       *
       * @kind function
       */
      ngClickOverrideEnabled: function() {
        return ngClickOverrideEnabled;
      }
    };
  };

}

/* global ngTouch: false */

    /**
     * @ngdoc service
     * @name $swipe
     *
     * @description
     * The `$swipe` service is a service that abstracts the messier details of hold-and-drag swipe
     * behavior, to make implementing swipe-related directives more convenient.
     *
     * Requires the {@link ngTouch `ngTouch`} module to be installed.
     *
     * `$swipe` is used by the `ngSwipeLeft` and `ngSwipeRight` directives in `ngTouch`.
     *
     * # Usage
     * The `$swipe` service is an object with a single method: `bind`. `bind` takes an element
     * which is to be watched for swipes, and an object with four handler functions. See the
     * documentation for `bind` below.
     */

ngTouch.factory('$swipe', [function() {
  // The total distance in any direction before we make the call on swipe vs. scroll.
  var MOVE_BUFFER_RADIUS = 10;

  var POINTER_EVENTS = {
    'mouse': {
      start: 'mousedown',
      move: 'mousemove',
      end: 'mouseup'
    },
    'touch': {
      start: 'touchstart',
      move: 'touchmove',
      end: 'touchend',
      cancel: 'touchcancel'
    },
    'pointer': {
      start: 'pointerdown',
      move: 'pointermove',
      end: 'pointerup',
      cancel: 'pointercancel'
    }
  };

  function getCoordinates(event) {
    var originalEvent = event.originalEvent || event;
    var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
    var e = (originalEvent.changedTouches && originalEvent.changedTouches[0]) || touches[0];

    return {
      x: e.clientX,
      y: e.clientY
    };
  }

  function getEvents(pointerTypes, eventType) {
    var res = [];
    angular.forEach(pointerTypes, function(pointerType) {
      var eventName = POINTER_EVENTS[pointerType][eventType];
      if (eventName) {
        res.push(eventName);
      }
    });
    return res.join(' ');
  }

  return {
    /**
     * @ngdoc method
     * @name $swipe#bind
     *
     * @description
     * The main method of `$swipe`. It takes an element to be watched for swipe motions, and an
     * object containing event handlers.
     * The pointer types that should be used can be specified via the optional
     * third argument, which is an array of strings `'mouse'`, `'touch'` and `'pointer'`. By default,
     * `$swipe` will listen for `mouse`, `touch` and `pointer` events.
     *
     * The four events are `start`, `move`, `end`, and `cancel`. `start`, `move`, and `end`
     * receive as a parameter a coordinates object of the form `{ x: 150, y: 310 }` and the raw
     * `event`. `cancel` receives the raw `event` as its single parameter.
     *
     * `start` is called on either `mousedown`, `touchstart` or `pointerdown`. After this event, `$swipe` is
     * watching for `touchmove`, `mousemove` or `pointermove` events. These events are ignored until the total
     * distance moved in either dimension exceeds a small threshold.
     *
     * Once this threshold is exceeded, either the horizontal or vertical delta is greater.
     * - If the horizontal distance is greater, this is a swipe and `move` and `end` events follow.
     * - If the vertical distance is greater, this is a scroll, and we let the browser take over.
     *   A `cancel` event is sent.
     *
     * `move` is called on `mousemove`, `touchmove` and `pointermove` after the above logic has determined that
     * a swipe is in progress.
     *
     * `end` is called when a swipe is successfully completed with a `touchend`, `mouseup` or `pointerup`.
     *
     * `cancel` is called either on a `touchcancel` or `pointercancel`  from the browser, or when we begin scrolling
     * as described above.
     *
     */
    bind: function(element, eventHandlers, pointerTypes) {
      // Absolute total movement, used to control swipe vs. scroll.
      var totalX, totalY;
      // Coordinates of the start position.
      var startCoords;
      // Last event's position.
      var lastPos;
      // Whether a swipe is active.
      var active = false;

      pointerTypes = pointerTypes || ['mouse', 'touch', 'pointer'];
      element.on(getEvents(pointerTypes, 'start'), function(event) {
        startCoords = getCoordinates(event);
        active = true;
        totalX = 0;
        totalY = 0;
        lastPos = startCoords;
        if (eventHandlers['start']) {
          eventHandlers['start'](startCoords, event);
        }
      });
      var events = getEvents(pointerTypes, 'cancel');
      if (events) {
        element.on(events, function(event) {
          active = false;
          if (eventHandlers['cancel']) {
            eventHandlers['cancel'](event);
          }
        });
      }

      element.on(getEvents(pointerTypes, 'move'), function(event) {
        if (!active) return;

        // Android will send a touchcancel if it thinks we're starting to scroll.
        // So when the total distance (+ or - or both) exceeds 10px in either direction,
        // we either:
        // - On totalX > totalY, we send preventDefault() and treat this as a swipe.
        // - On totalY > totalX, we let the browser handle it as a scroll.

        if (!startCoords) return;
        var coords = getCoordinates(event);

        totalX += Math.abs(coords.x - lastPos.x);
        totalY += Math.abs(coords.y - lastPos.y);

        lastPos = coords;

        if (totalX < MOVE_BUFFER_RADIUS && totalY < MOVE_BUFFER_RADIUS) {
          return;
        }

        // One of totalX or totalY has exceeded the buffer, so decide on swipe vs. scroll.
        if (totalY > totalX) {
          // Allow native scrolling to take over.
          active = false;
          if (eventHandlers['cancel']) {
            eventHandlers['cancel'](event);
          }
          return;
        } else {
          // Prevent the browser from scrolling.
          event.preventDefault();
          if (eventHandlers['move']) {
            eventHandlers['move'](coords, event);
          }
        }
      });

      element.on(getEvents(pointerTypes, 'end'), function(event) {
        if (!active) return;
        active = false;
        if (eventHandlers['end']) {
          eventHandlers['end'](getCoordinates(event), event);
        }
      });
    }
  };
}]);

/* global ngTouch: false,
  nodeName_: false
*/

/**
 * @ngdoc directive
 * @name ngClick
 * @deprecated
 * sinceVersion="v1.5.0"
 * This directive is deprecated and **disabled** by default.
 * The directive will receive no further support and might be removed from future releases.
 * If you need the directive, you can enable it with the {@link ngTouch.$touchProvider $touchProvider#ngClickOverrideEnabled}
 * function. We also recommend that you migrate to [FastClick](https://github.com/ftlabs/fastclick).
 * To learn more about the 300ms delay, this [Telerik article](http://developer.telerik.com/featured/300-ms-click-delay-ios-8/)
 * gives a good overview.
 *
 * @description
 * A more powerful replacement for the default ngClick designed to be used on touchscreen
 * devices. Most mobile browsers wait about 300ms after a tap-and-release before sending
 * the click event. This version handles them immediately, and then prevents the
 * following click event from propagating.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * This directive can fall back to using an ordinary click event, and so works on desktop
 * browsers as well as mobile.
 *
 * This directive also sets the CSS class `ng-click-active` while the element is being held
 * down (by a mouse click or touch) so you can restyle the depressed element if you wish.
 *
 * @element ANY
 * @param {expression} ngClick {@link guide/expression Expression} to evaluate
 * upon tap. (Event object is available as `$event`)
 *
 * @example
    <example module="ngClickExample" deps="angular-touch.js" name="ng-touch-ng-click">
      <file name="index.html">
        <button ng-click="count = count + 1" ng-init="count=0">
          Increment
        </button>
        count: {{ count }}
      </file>
      <file name="script.js">
        angular.module('ngClickExample', ['ngTouch']);
      </file>
    </example>
 */

var ngTouchClickDirectiveFactory = ['$parse', '$timeout', '$rootElement',
    function($parse, $timeout, $rootElement) {
  var TAP_DURATION = 750; // Shorter than 750ms is a tap, longer is a taphold or drag.
  var MOVE_TOLERANCE = 12; // 12px seems to work in most mobile browsers.
  var PREVENT_DURATION = 2500; // 2.5 seconds maximum from preventGhostClick call to click
  var CLICKBUSTER_THRESHOLD = 25; // 25 pixels in any dimension is the limit for busting clicks.

  var ACTIVE_CLASS_NAME = 'ng-click-active';
  var lastPreventedTime;
  var touchCoordinates;
  var lastLabelClickCoordinates;


  // TAP EVENTS AND GHOST CLICKS
  //
  // Why tap events?
  // Mobile browsers detect a tap, then wait a moment (usually ~300ms) to see if you're
  // double-tapping, and then fire a click event.
  //
  // This delay sucks and makes mobile apps feel unresponsive.
  // So we detect touchstart, touchcancel and touchend ourselves and determine when
  // the user has tapped on something.
  //
  // What happens when the browser then generates a click event?
  // The browser, of course, also detects the tap and fires a click after a delay. This results in
  // tapping/clicking twice. We do "clickbusting" to prevent it.
  //
  // How does it work?
  // We attach global touchstart and click handlers, that run during the capture (early) phase.
  // So the sequence for a tap is:
  // - global touchstart: Sets an "allowable region" at the point touched.
  // - element's touchstart: Starts a touch
  // (- touchcancel ends the touch, no click follows)
  // - element's touchend: Determines if the tap is valid (didn't move too far away, didn't hold
  //   too long) and fires the user's tap handler. The touchend also calls preventGhostClick().
  // - preventGhostClick() removes the allowable region the global touchstart created.
  // - The browser generates a click event.
  // - The global click handler catches the click, and checks whether it was in an allowable region.
  //     - If preventGhostClick was called, the region will have been removed, the click is busted.
  //     - If the region is still there, the click proceeds normally. Therefore clicks on links and
  //       other elements without ngTap on them work normally.
  //
  // This is an ugly, terrible hack!
  // Yeah, tell me about it. The alternatives are using the slow click events, or making our users
  // deal with the ghost clicks, so I consider this the least of evils. Fortunately Angular
  // encapsulates this ugly logic away from the user.
  //
  // Why not just put click handlers on the element?
  // We do that too, just to be sure. If the tap event caused the DOM to change,
  // it is possible another element is now in that position. To take account for these possibly
  // distinct elements, the handlers are global and care only about coordinates.

  // Checks if the coordinates are close enough to be within the region.
  function hit(x1, y1, x2, y2) {
    return Math.abs(x1 - x2) < CLICKBUSTER_THRESHOLD && Math.abs(y1 - y2) < CLICKBUSTER_THRESHOLD;
  }

  // Checks a list of allowable regions against a click location.
  // Returns true if the click should be allowed.
  // Splices out the allowable region from the list after it has been used.
  function checkAllowableRegions(touchCoordinates, x, y) {
    for (var i = 0; i < touchCoordinates.length; i += 2) {
      if (hit(touchCoordinates[i], touchCoordinates[i + 1], x, y)) {
        touchCoordinates.splice(i, i + 2);
        return true; // allowable region
      }
    }
    return false; // No allowable region; bust it.
  }

  // Global click handler that prevents the click if it's in a bustable zone and preventGhostClick
  // was called recently.
  function onClick(event) {
    if (Date.now() - lastPreventedTime > PREVENT_DURATION) {
      return; // Too old.
    }

    var touches = event.touches && event.touches.length ? event.touches : [event];
    var x = touches[0].clientX;
    var y = touches[0].clientY;
    // Work around desktop Webkit quirk where clicking a label will fire two clicks (on the label
    // and on the input element). Depending on the exact browser, this second click we don't want
    // to bust has either (0,0), negative coordinates, or coordinates equal to triggering label
    // click event
    if (x < 1 && y < 1) {
      return; // offscreen
    }
    if (lastLabelClickCoordinates &&
        lastLabelClickCoordinates[0] === x && lastLabelClickCoordinates[1] === y) {
      return; // input click triggered by label click
    }
    // reset label click coordinates on first subsequent click
    if (lastLabelClickCoordinates) {
      lastLabelClickCoordinates = null;
    }
    // remember label click coordinates to prevent click busting of trigger click event on input
    if (nodeName_(event.target) === 'label') {
      lastLabelClickCoordinates = [x, y];
    }

    // Look for an allowable region containing this click.
    // If we find one, that means it was created by touchstart and not removed by
    // preventGhostClick, so we don't bust it.
    if (checkAllowableRegions(touchCoordinates, x, y)) {
      return;
    }

    // If we didn't find an allowable region, bust the click.
    event.stopPropagation();
    event.preventDefault();

    // Blur focused form elements
    if (event.target && event.target.blur) {
      event.target.blur();
    }
  }


  // Global touchstart handler that creates an allowable region for a click event.
  // This allowable region can be removed by preventGhostClick if we want to bust it.
  function onTouchStart(event) {
    var touches = event.touches && event.touches.length ? event.touches : [event];
    var x = touches[0].clientX;
    var y = touches[0].clientY;
    touchCoordinates.push(x, y);

    $timeout(function() {
      // Remove the allowable region.
      for (var i = 0; i < touchCoordinates.length; i += 2) {
        if (touchCoordinates[i] === x && touchCoordinates[i + 1] === y) {
          touchCoordinates.splice(i, i + 2);
          return;
        }
      }
    }, PREVENT_DURATION, false);
  }

  // On the first call, attaches some event handlers. Then whenever it gets called, it creates a
  // zone around the touchstart where clicks will get busted.
  function preventGhostClick(x, y) {
    if (!touchCoordinates) {
      $rootElement[0].addEventListener('click', onClick, true);
      $rootElement[0].addEventListener('touchstart', onTouchStart, true);
      touchCoordinates = [];
    }

    lastPreventedTime = Date.now();

    checkAllowableRegions(touchCoordinates, x, y);
  }

  // Actual linking function.
  return function(scope, element, attr) {
    var clickHandler = $parse(attr.ngClick),
        tapping = false,
        tapElement,  // Used to blur the element after a tap.
        startTime,   // Used to check if the tap was held too long.
        touchStartX,
        touchStartY;

    function resetState() {
      tapping = false;
      element.removeClass(ACTIVE_CLASS_NAME);
    }

    element.on('touchstart', function(event) {
      tapping = true;
      tapElement = event.target ? event.target : event.srcElement; // IE uses srcElement.
      // Hack for Safari, which can target text nodes instead of containers.
      if (tapElement.nodeType === 3) {
        tapElement = tapElement.parentNode;
      }

      element.addClass(ACTIVE_CLASS_NAME);

      startTime = Date.now();

      // Use jQuery originalEvent
      var originalEvent = event.originalEvent || event;
      var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
      var e = touches[0];
      touchStartX = e.clientX;
      touchStartY = e.clientY;
    });

    element.on('touchcancel', function(event) {
      resetState();
    });

    element.on('touchend', function(event) {
      var diff = Date.now() - startTime;

      // Use jQuery originalEvent
      var originalEvent = event.originalEvent || event;
      var touches = (originalEvent.changedTouches && originalEvent.changedTouches.length) ?
          originalEvent.changedTouches :
          ((originalEvent.touches && originalEvent.touches.length) ? originalEvent.touches : [originalEvent]);
      var e = touches[0];
      var x = e.clientX;
      var y = e.clientY;
      var dist = Math.sqrt(Math.pow(x - touchStartX, 2) + Math.pow(y - touchStartY, 2));

      if (tapping && diff < TAP_DURATION && dist < MOVE_TOLERANCE) {
        // Call preventGhostClick so the clickbuster will catch the corresponding click.
        preventGhostClick(x, y);

        // Blur the focused element (the button, probably) before firing the callback.
        // This doesn't work perfectly on Android Chrome, but seems to work elsewhere.
        // I couldn't get anything to work reliably on Android Chrome.
        if (tapElement) {
          tapElement.blur();
        }

        if (!angular.isDefined(attr.disabled) || attr.disabled === false) {
          element.triggerHandler('click', [event]);
        }
      }

      resetState();
    });

    // Hack for iOS Safari's benefit. It goes searching for onclick handlers and is liable to click
    // something else nearby.
    element.onclick = function(event) { };

    // Actual click handler.
    // There are three different kinds of clicks, only two of which reach this point.
    // - On desktop browsers without touch events, their clicks will always come here.
    // - On mobile browsers, the simulated "fast" click will call this.
    // - But the browser's follow-up slow click will be "busted" before it reaches this handler.
    // Therefore it's safe to use this directive on both mobile and desktop.
    element.on('click', function(event, touchend) {
      scope.$apply(function() {
        clickHandler(scope, {$event: (touchend || event)});
      });
    });

    element.on('mousedown', function(event) {
      element.addClass(ACTIVE_CLASS_NAME);
    });

    element.on('mousemove mouseup', function(event) {
      element.removeClass(ACTIVE_CLASS_NAME);
    });

  };
}];

/* global ngTouch: false */

/**
 * @ngdoc directive
 * @name ngSwipeLeft
 *
 * @description
 * Specify custom behavior when an element is swiped to the left on a touchscreen device.
 * A leftward swipe is a quick, right-to-left slide of the finger.
 * Though ngSwipeLeft is designed for touch-based devices, it will work with a mouse click and drag
 * too.
 *
 * To disable the mouse click and drag functionality, add `ng-swipe-disable-mouse` to
 * the `ng-swipe-left` or `ng-swipe-right` DOM Element.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * @element ANY
 * @param {expression} ngSwipeLeft {@link guide/expression Expression} to evaluate
 * upon left swipe. (Event object is available as `$event`)
 *
 * @example
    <example module="ngSwipeLeftExample" deps="angular-touch.js" name="ng-swipe-left">
      <file name="index.html">
        <div ng-show="!showActions" ng-swipe-left="showActions = true">
          Some list content, like an email in the inbox
        </div>
        <div ng-show="showActions" ng-swipe-right="showActions = false">
          <button ng-click="reply()">Reply</button>
          <button ng-click="delete()">Delete</button>
        </div>
      </file>
      <file name="script.js">
        angular.module('ngSwipeLeftExample', ['ngTouch']);
      </file>
    </example>
 */

/**
 * @ngdoc directive
 * @name ngSwipeRight
 *
 * @description
 * Specify custom behavior when an element is swiped to the right on a touchscreen device.
 * A rightward swipe is a quick, left-to-right slide of the finger.
 * Though ngSwipeRight is designed for touch-based devices, it will work with a mouse click and drag
 * too.
 *
 * Requires the {@link ngTouch `ngTouch`} module to be installed.
 *
 * @element ANY
 * @param {expression} ngSwipeRight {@link guide/expression Expression} to evaluate
 * upon right swipe. (Event object is available as `$event`)
 *
 * @example
    <example module="ngSwipeRightExample" deps="angular-touch.js" name="ng-swipe-right">
      <file name="index.html">
        <div ng-show="!showActions" ng-swipe-left="showActions = true">
          Some list content, like an email in the inbox
        </div>
        <div ng-show="showActions" ng-swipe-right="showActions = false">
          <button ng-click="reply()">Reply</button>
          <button ng-click="delete()">Delete</button>
        </div>
      </file>
      <file name="script.js">
        angular.module('ngSwipeRightExample', ['ngTouch']);
      </file>
    </example>
 */

function makeSwipeDirective(directiveName, direction, eventName) {
  ngTouch.directive(directiveName, ['$parse', '$swipe', function($parse, $swipe) {
    // The maximum vertical delta for a swipe should be less than 75px.
    var MAX_VERTICAL_DISTANCE = 75;
    // Vertical distance should not be more than a fraction of the horizontal distance.
    var MAX_VERTICAL_RATIO = 0.3;
    // At least a 30px lateral motion is necessary for a swipe.
    var MIN_HORIZONTAL_DISTANCE = 30;

    return function(scope, element, attr) {
      var swipeHandler = $parse(attr[directiveName]);

      var startCoords, valid;

      function validSwipe(coords) {
        // Check that it's within the coordinates.
        // Absolute vertical distance must be within tolerances.
        // Horizontal distance, we take the current X - the starting X.
        // This is negative for leftward swipes and positive for rightward swipes.
        // After multiplying by the direction (-1 for left, +1 for right), legal swipes
        // (ie. same direction as the directive wants) will have a positive delta and
        // illegal ones a negative delta.
        // Therefore this delta must be positive, and larger than the minimum.
        if (!startCoords) return false;
        var deltaY = Math.abs(coords.y - startCoords.y);
        var deltaX = (coords.x - startCoords.x) * direction;
        return valid && // Short circuit for already-invalidated swipes.
            deltaY < MAX_VERTICAL_DISTANCE &&
            deltaX > 0 &&
            deltaX > MIN_HORIZONTAL_DISTANCE &&
            deltaY / deltaX < MAX_VERTICAL_RATIO;
      }

      var pointerTypes = ['touch'];
      if (!angular.isDefined(attr['ngSwipeDisableMouse'])) {
        pointerTypes.push('mouse');
      }
      $swipe.bind(element, {
        'start': function(coords, event) {
          startCoords = coords;
          valid = true;
        },
        'cancel': function(event) {
          valid = false;
        },
        'end': function(coords, event) {
          if (validSwipe(coords)) {
            scope.$apply(function() {
              element.triggerHandler(eventName);
              swipeHandler(scope, {$event: event});
            });
          }
        }
      }, pointerTypes);
    };
  }]);
}

// Left is negative X-coordinate, right is positive.
makeSwipeDirective('ngSwipeLeft', -1, 'swipeleft');
makeSwipeDirective('ngSwipeRight', 1, 'swiperight');



})(window, window.angular);


Otaku-Projects / AngularJS-CRUD-PHP

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