config redirect

node_modules/outlayer/item.js

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+/**
+ * Outlayer Item
+ */
+
+( function( window, factory ) {
+  // universal module definition
+  /* jshint strict: false */ /* globals define, module, require */
+  if ( typeof define == 'function' && define.amd ) {
+    // AMD - RequireJS
+    define( [
+        'ev-emitter/ev-emitter',
+        'get-size/get-size'
+      ],
+      factory
+    );
+  } else if ( typeof module == 'object' && module.exports ) {
+    // CommonJS - Browserify, Webpack
+    module.exports = factory(
+      require('ev-emitter'),
+      require('get-size')
+    );
+  } else {
+    // browser global
+    window.Outlayer = {};
+    window.Outlayer.Item = factory(
+      window.EvEmitter,
+      window.getSize
+    );
+  }
+
+}( window, function factory( EvEmitter, getSize ) {
+'use strict';
+
+// ----- helpers ----- //
+
+function isEmptyObj( obj ) {
+  for ( var prop in obj ) {
+    return false;
+  }
+  prop = null;
+  return true;
+}
+
+// -------------------------- CSS3 support -------------------------- //
+
+
+var docElemStyle = document.documentElement.style;
+
+var transitionProperty = typeof docElemStyle.transition == 'string' ?
+  'transition' : 'WebkitTransition';
+var transformProperty = typeof docElemStyle.transform == 'string' ?
+  'transform' : 'WebkitTransform';
+
+var transitionEndEvent = {
+  WebkitTransition: 'webkitTransitionEnd',
+  transition: 'transitionend'
+}[ transitionProperty ];
+
+// cache all vendor properties that could have vendor prefix
+var vendorProperties = {
+  transform: transformProperty,
+  transition: transitionProperty,
+  transitionDuration: transitionProperty + 'Duration',
+  transitionProperty: transitionProperty + 'Property',
+  transitionDelay: transitionProperty + 'Delay'
+};
+
+// -------------------------- Item -------------------------- //
+
+function Item( element, layout ) {
+  if ( !element ) {
+    return;
+  }
+
+  this.element = element;
+  // parent layout class, i.e. Masonry, Isotope, or Packery
+  this.layout = layout;
+  this.position = {
+    x: 0,
+    y: 0
+  };
+
+  this._create();
+}
+
+// inherit EvEmitter
+var proto = Item.prototype = Object.create( EvEmitter.prototype );
+proto.constructor = Item;
+
+proto._create = function() {
+  // transition objects
+  this._transn = {
+    ingProperties: {},
+    clean: {},
+    onEnd: {}
+  };
+
+  this.css({
+    position: 'absolute'
+  });
+};
+
+// trigger specified handler for event type
+proto.handleEvent = function( event ) {
+  var method = 'on' + event.type;
+  if ( this[ method ] ) {
+    this[ method ]( event );
+  }
+};
+
+proto.getSize = function() {
+  this.size = getSize( this.element );
+};
+
+/**
+ * apply CSS styles to element
+ * @param {Object} style
+ */
+proto.css = function( style ) {
+  var elemStyle = this.element.style;
+
+  for ( var prop in style ) {
+    // use vendor property if available
+    var supportedProp = vendorProperties[ prop ] || prop;
+    elemStyle[ supportedProp ] = style[ prop ];
+  }
+};
+
+ // measure position, and sets it
+proto.getPosition = function() {
+  var style = getComputedStyle( this.element );
+  var isOriginLeft = this.layout._getOption('originLeft');
+  var isOriginTop = this.layout._getOption('originTop');
+  var xValue = style[ isOriginLeft ? 'left' : 'right' ];
+  var yValue = style[ isOriginTop ? 'top' : 'bottom' ];
+  var x = parseFloat( xValue );
+  var y = parseFloat( yValue );
+  // convert percent to pixels
+  var layoutSize = this.layout.size;
+  if ( xValue.indexOf('%') != -1 ) {
+    x = ( x / 100 ) * layoutSize.width;
+  }
+  if ( yValue.indexOf('%') != -1 ) {
+    y = ( y / 100 ) * layoutSize.height;
+  }
+  // clean up 'auto' or other non-integer values
+  x = isNaN( x ) ? 0 : x;
+  y = isNaN( y ) ? 0 : y;
+  // remove padding from measurement
+  x -= isOriginLeft ? layoutSize.paddingLeft : layoutSize.paddingRight;
+  y -= isOriginTop ? layoutSize.paddingTop : layoutSize.paddingBottom;
+
+  this.position.x = x;
+  this.position.y = y;
+};
+
+// set settled position, apply padding
+proto.layoutPosition = function() {
+  var layoutSize = this.layout.size;
+  var style = {};
+  var isOriginLeft = this.layout._getOption('originLeft');
+  var isOriginTop = this.layout._getOption('originTop');
+
+  // x
+  var xPadding = isOriginLeft ? 'paddingLeft' : 'paddingRight';
+  var xProperty = isOriginLeft ? 'left' : 'right';
+  var xResetProperty = isOriginLeft ? 'right' : 'left';
+
+  var x = this.position.x + layoutSize[ xPadding ];
+  // set in percentage or pixels
+  style[ xProperty ] = this.getXValue( x );
+  // reset other property
+  style[ xResetProperty ] = '';
+
+  // y
+  var yPadding = isOriginTop ? 'paddingTop' : 'paddingBottom';
+  var yProperty = isOriginTop ? 'top' : 'bottom';
+  var yResetProperty = isOriginTop ? 'bottom' : 'top';
+
+  var y = this.position.y + layoutSize[ yPadding ];
+  // set in percentage or pixels
+  style[ yProperty ] = this.getYValue( y );
+  // reset other property
+  style[ yResetProperty ] = '';
+
+  this.css( style );
+  this.emitEvent( 'layout', [ this ] );
+};
+
+proto.getXValue = function( x ) {
+  var isHorizontal = this.layout._getOption('horizontal');
+  return this.layout.options.percentPosition && !isHorizontal ?
+    ( ( x / this.layout.size.width ) * 100 ) + '%' : x + 'px';
+};
+
+proto.getYValue = function( y ) {
+  var isHorizontal = this.layout._getOption('horizontal');
+  return this.layout.options.percentPosition && isHorizontal ?
+    ( ( y / this.layout.size.height ) * 100 ) + '%' : y + 'px';
+};
+
+proto._transitionTo = function( x, y ) {
+  this.getPosition();
+  // get current x & y from top/left
+  var curX = this.position.x;
+  var curY = this.position.y;
+
+  var didNotMove = x == this.position.x && y == this.position.y;
+
+  // save end position
+  this.setPosition( x, y );
+
+  // if did not move and not transitioning, just go to layout
+  if ( didNotMove && !this.isTransitioning ) {
+    this.layoutPosition();
+    return;
+  }
+
+  var transX = x - curX;
+  var transY = y - curY;
+  var transitionStyle = {};
+  transitionStyle.transform = this.getTranslate( transX, transY );
+
+  this.transition({
+    to: transitionStyle,
+    onTransitionEnd: {
+      transform: this.layoutPosition
+    },
+    isCleaning: true
+  });
+};
+
+proto.getTranslate = function( x, y ) {
+  // flip cooridinates if origin on right or bottom
+  var isOriginLeft = this.layout._getOption('originLeft');
+  var isOriginTop = this.layout._getOption('originTop');
+  x = isOriginLeft ? x : -x;
+  y = isOriginTop ? y : -y;
+  return 'translate3d(' + x + 'px, ' + y + 'px, 0)';
+};
+
+// non transition + transform support
+proto.goTo = function( x, y ) {
+  this.setPosition( x, y );
+  this.layoutPosition();
+};
+
+proto.moveTo = proto._transitionTo;
+
+proto.setPosition = function( x, y ) {
+  this.position.x = parseFloat( x );
+  this.position.y = parseFloat( y );
+};
+
+// ----- transition ----- //
+
+/**
+ * @param {Object} style - CSS
+ * @param {Function} onTransitionEnd
+ */
+
+// non transition, just trigger callback
+proto._nonTransition = function( args ) {
+  this.css( args.to );
+  if ( args.isCleaning ) {
+    this._removeStyles( args.to );
+  }
+  for ( var prop in args.onTransitionEnd ) {
+    args.onTransitionEnd[ prop ].call( this );
+  }
+};
+
+/**
+ * proper transition
+ * @param {Object} args - arguments
+ *   @param {Object} to - style to transition to
+ *   @param {Object} from - style to start transition from
+ *   @param {Boolean} isCleaning - removes transition styles after transition
+ *   @param {Function} onTransitionEnd - callback
+ */
+proto.transition = function( args ) {
+  // redirect to nonTransition if no transition duration
+  if ( !parseFloat( this.layout.options.transitionDuration ) ) {
+    this._nonTransition( args );
+    return;
+  }
+
+  var _transition = this._transn;
+  // keep track of onTransitionEnd callback by css property
+  for ( var prop in args.onTransitionEnd ) {
+    _transition.onEnd[ prop ] = args.onTransitionEnd[ prop ];
+  }
+  // keep track of properties that are transitioning
+  for ( prop in args.to ) {
+    _transition.ingProperties[ prop ] = true;
+    // keep track of properties to clean up when transition is done
+    if ( args.isCleaning ) {
+      _transition.clean[ prop ] = true;
+    }
+  }
+
+  // set from styles
+  if ( args.from ) {
+    this.css( args.from );
+    // force redraw. http://blog.alexmaccaw.com/css-transitions
+    var h = this.element.offsetHeight;
+    // hack for JSHint to hush about unused var
+    h = null;
+  }
+  // enable transition
+  this.enableTransition( args.to );
+  // set styles that are transitioning
+  this.css( args.to );
+
+  this.isTransitioning = true;
+
+};
+
+// dash before all cap letters, including first for
+// WebkitTransform => -webkit-transform
+function toDashedAll( str ) {
+  return str.replace( /([A-Z])/g, function( $1 ) {
+    return '-' + $1.toLowerCase();
+  });
+}
+
+var transitionProps = 'opacity,' + toDashedAll( transformProperty );
+
+proto.enableTransition = function(/* style */) {
+  // HACK changing transitionProperty during a transition
+  // will cause transition to jump
+  if ( this.isTransitioning ) {
+    return;
+  }
+
+  // make `transition: foo, bar, baz` from style object
+  // HACK un-comment this when enableTransition can work
+  // while a transition is happening
+  // var transitionValues = [];
+  // for ( var prop in style ) {
+  //   // dash-ify camelCased properties like WebkitTransition
+  //   prop = vendorProperties[ prop ] || prop;
+  //   transitionValues.push( toDashedAll( prop ) );
+  // }
+  // munge number to millisecond, to match stagger
+  var duration = this.layout.options.transitionDuration;
+  duration = typeof duration == 'number' ? duration + 'ms' : duration;
+  // enable transition styles
+  this.css({
+    transitionProperty: transitionProps,
+    transitionDuration: duration,
+    transitionDelay: this.staggerDelay || 0
+  });
+  // listen for transition end event
+  this.element.addEventListener( transitionEndEvent, this, false );
+};
+
+// ----- events ----- //
+
+proto.onwebkitTransitionEnd = function( event ) {
+  this.ontransitionend( event );
+};
+
+proto.onotransitionend = function( event ) {
+  this.ontransitionend( event );
+};
+
+// properties that I munge to make my life easier
+var dashedVendorProperties = {
+  '-webkit-transform': 'transform'
+};
+
+proto.ontransitionend = function( event ) {
+  // disregard bubbled events from children
+  if ( event.target !== this.element ) {
+    return;
+  }
+  var _transition = this._transn;
+  // get property name of transitioned property, convert to prefix-free
+  var propertyName = dashedVendorProperties[ event.propertyName ] || event.propertyName;
+
+  // remove property that has completed transitioning
+  delete _transition.ingProperties[ propertyName ];
+  // check if any properties are still transitioning
+  if ( isEmptyObj( _transition.ingProperties ) ) {
+    // all properties have completed transitioning
+    this.disableTransition();
+  }
+  // clean style
+  if ( propertyName in _transition.clean ) {
+    // clean up style
+    this.element.style[ event.propertyName ] = '';
+    delete _transition.clean[ propertyName ];
+  }
+  // trigger onTransitionEnd callback
+  if ( propertyName in _transition.onEnd ) {
+    var onTransitionEnd = _transition.onEnd[ propertyName ];
+    onTransitionEnd.call( this );
+    delete _transition.onEnd[ propertyName ];
+  }
+
+  this.emitEvent( 'transitionEnd', [ this ] );
+};
+
+proto.disableTransition = function() {
+  this.removeTransitionStyles();
+  this.element.removeEventListener( transitionEndEvent, this, false );
+  this.isTransitioning = false;
+};
+
+/**
+ * removes style property from element
+ * @param {Object} style
+**/
+proto._removeStyles = function( style ) {
+  // clean up transition styles
+  var cleanStyle = {};
+  for ( var prop in style ) {
+    cleanStyle[ prop ] = '';
+  }
+  this.css( cleanStyle );
+};
+
+var cleanTransitionStyle = {
+  transitionProperty: '',
+  transitionDuration: '',
+  transitionDelay: ''
+};
+
+proto.removeTransitionStyles = function() {
+  // remove transition
+  this.css( cleanTransitionStyle );
+};
+
+// ----- stagger ----- //
+
+proto.stagger = function( delay ) {
+  delay = isNaN( delay ) ? 0 : delay;
+  this.staggerDelay = delay + 'ms';
+};
+
+// ----- show/hide/remove ----- //
+
+// remove element from DOM
+proto.removeElem = function() {
+  this.element.parentNode.removeChild( this.element );
+  // remove display: none
+  this.css({ display: '' });
+  this.emitEvent( 'remove', [ this ] );
+};
+
+proto.remove = function() {
+  // just remove element if no transition support or no transition
+  if ( !transitionProperty || !parseFloat( this.layout.options.transitionDuration ) ) {
+    this.removeElem();
+    return;
+  }
+
+  // start transition
+  this.once( 'transitionEnd', function() {
+    this.removeElem();
+  });
+  this.hide();
+};
+
+proto.reveal = function() {
+  delete this.isHidden;
+  // remove display: none
+  this.css({ display: '' });
+
+  var options = this.layout.options;
+
+  var onTransitionEnd = {};
+  var transitionEndProperty = this.getHideRevealTransitionEndProperty('visibleStyle');
+  onTransitionEnd[ transitionEndProperty ] = this.onRevealTransitionEnd;
+
+  this.transition({
+    from: options.hiddenStyle,
+    to: options.visibleStyle,
+    isCleaning: true,
+    onTransitionEnd: onTransitionEnd
+  });
+};
+
+proto.onRevealTransitionEnd = function() {
+  // check if still visible
+  // during transition, item may have been hidden
+  if ( !this.isHidden ) {
+    this.emitEvent('reveal');
+  }
+};
+
+/**
+ * get style property use for hide/reveal transition end
+ * @param {String} styleProperty - hiddenStyle/visibleStyle
+ * @returns {String}
+ */
+proto.getHideRevealTransitionEndProperty = function( styleProperty ) {
+  var optionStyle = this.layout.options[ styleProperty ];
+  // use opacity
+  if ( optionStyle.opacity ) {
+    return 'opacity';
+  }
+  // get first property
+  for ( var prop in optionStyle ) {
+    return prop;
+  }
+};
+
+proto.hide = function() {
+  // set flag
+  this.isHidden = true;
+  // remove display: none
+  this.css({ display: '' });
+
+  var options = this.layout.options;
+
+  var onTransitionEnd = {};
+  var transitionEndProperty = this.getHideRevealTransitionEndProperty('hiddenStyle');
+  onTransitionEnd[ transitionEndProperty ] = this.onHideTransitionEnd;
+
+  this.transition({
+    from: options.visibleStyle,
+    to: options.hiddenStyle,
+    // keep hidden stuff hidden
+    isCleaning: true,
+    onTransitionEnd: onTransitionEnd
+  });
+};
+
+proto.onHideTransitionEnd = function() {
+  // check if still hidden
+  // during transition, item may have been un-hidden
+  if ( this.isHidden ) {
+    this.css({ display: 'none' });
+    this.emitEvent('hide');
+  }
+};
+
+proto.destroy = function() {
+  this.css({
+    position: '',
+    left: '',
+    right: '',
+    top: '',
+    bottom: '',
+    transition: '',
+    transform: ''
+  });
+};
+
+return Item;
+
+}));