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bower_components/Materialize/js/waves.js 10.9 KB
74249687   Luigi Serra   Cross browser con...
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  /*!
   * Waves v0.6.4
   * http://fian.my.id/Waves
   *
   * Copyright 2014 Alfiana E. Sibuea and other contributors
   * Released under the MIT license
   * https://github.com/fians/Waves/blob/master/LICENSE
   */
  
  ;(function(window) {
      'use strict';
  
      var Waves = Waves || {};
      var $$ = document.querySelectorAll.bind(document);
  
      // Find exact position of element
      function isWindow(obj) {
          return obj !== null && obj === obj.window;
      }
  
      function getWindow(elem) {
          return isWindow(elem) ? elem : elem.nodeType === 9 && elem.defaultView;
      }
  
      function offset(elem) {
          var docElem, win,
              box = {top: 0, left: 0},
              doc = elem && elem.ownerDocument;
  
          docElem = doc.documentElement;
  
          if (typeof elem.getBoundingClientRect !== typeof undefined) {
              box = elem.getBoundingClientRect();
          }
          win = getWindow(doc);
          return {
              top: box.top + win.pageYOffset - docElem.clientTop,
              left: box.left + win.pageXOffset - docElem.clientLeft
          };
      }
  
      function convertStyle(obj) {
          var style = '';
  
          for (var a in obj) {
              if (obj.hasOwnProperty(a)) {
                  style += (a + ':' + obj[a] + ';');
              }
          }
  
          return style;
      }
  
      var Effect = {
  
          // Effect delay
          duration: 750,
  
          show: function(e, element) {
  
              // Disable right click
              if (e.button === 2) {
                  return false;
              }
  
              var el = element || this;
  
              // Create ripple
              var ripple = document.createElement('div');
              ripple.className = 'waves-ripple';
              el.appendChild(ripple);
  
              // Get click coordinate and element witdh
              var pos         = offset(el);
              var relativeY   = (e.pageY - pos.top);
              var relativeX   = (e.pageX - pos.left);
              var scale       = 'scale('+((el.clientWidth / 100) * 10)+')';
  
              // Support for touch devices
              if ('touches' in e) {
                relativeY   = (e.touches[0].pageY - pos.top);
                relativeX   = (e.touches[0].pageX - pos.left);
              }
  
              // Attach data to element
              ripple.setAttribute('data-hold', Date.now());
              ripple.setAttribute('data-scale', scale);
              ripple.setAttribute('data-x', relativeX);
              ripple.setAttribute('data-y', relativeY);
  
              // Set ripple position
              var rippleStyle = {
                  'top': relativeY+'px',
                  'left': relativeX+'px'
              };
  
              ripple.className = ripple.className + ' waves-notransition';
              ripple.setAttribute('style', convertStyle(rippleStyle));
              ripple.className = ripple.className.replace('waves-notransition', '');
  
              // Scale the ripple
              rippleStyle['-webkit-transform'] = scale;
              rippleStyle['-moz-transform'] = scale;
              rippleStyle['-ms-transform'] = scale;
              rippleStyle['-o-transform'] = scale;
              rippleStyle.transform = scale;
              rippleStyle.opacity   = '1';
  
              rippleStyle['-webkit-transition-duration'] = Effect.duration + 'ms';
              rippleStyle['-moz-transition-duration']    = Effect.duration + 'ms';
              rippleStyle['-o-transition-duration']      = Effect.duration + 'ms';
              rippleStyle['transition-duration']         = Effect.duration + 'ms';
  
              rippleStyle['-webkit-transition-timing-function'] = 'cubic-bezier(0.250, 0.460, 0.450, 0.940)';
              rippleStyle['-moz-transition-timing-function']    = 'cubic-bezier(0.250, 0.460, 0.450, 0.940)';
              rippleStyle['-o-transition-timing-function']      = 'cubic-bezier(0.250, 0.460, 0.450, 0.940)';
              rippleStyle['transition-timing-function']         = 'cubic-bezier(0.250, 0.460, 0.450, 0.940)';
  
              ripple.setAttribute('style', convertStyle(rippleStyle));
          },
  
          hide: function(e) {
              TouchHandler.touchup(e);
  
              var el = this;
              var width = el.clientWidth * 1.4;
  
              // Get first ripple
              var ripple = null;
              var ripples = el.getElementsByClassName('waves-ripple');
              if (ripples.length > 0) {
                  ripple = ripples[ripples.length - 1];
              } else {
                  return false;
              }
  
              var relativeX   = ripple.getAttribute('data-x');
              var relativeY   = ripple.getAttribute('data-y');
              var scale       = ripple.getAttribute('data-scale');
  
              // Get delay beetween mousedown and mouse leave
              var diff = Date.now() - Number(ripple.getAttribute('data-hold'));
              var delay = 350 - diff;
  
              if (delay < 0) {
                  delay = 0;
              }
  
              // Fade out ripple after delay
              setTimeout(function() {
                  var style = {
                      'top': relativeY+'px',
                      'left': relativeX+'px',
                      'opacity': '0',
  
                      // Duration
                      '-webkit-transition-duration': Effect.duration + 'ms',
                      '-moz-transition-duration': Effect.duration + 'ms',
                      '-o-transition-duration': Effect.duration + 'ms',
                      'transition-duration': Effect.duration + 'ms',
                      '-webkit-transform': scale,
                      '-moz-transform': scale,
                      '-ms-transform': scale,
                      '-o-transform': scale,
                      'transform': scale,
                  };
  
                  ripple.setAttribute('style', convertStyle(style));
  
                  setTimeout(function() {
                      try {
                          el.removeChild(ripple);
                      } catch(e) {
                          return false;
                      }
                  }, Effect.duration);
              }, delay);
          },
  
          // Little hack to make <input> can perform waves effect
          wrapInput: function(elements) {
              for (var a = 0; a < elements.length; a++) {
                  var el = elements[a];
  
                  if (el.tagName.toLowerCase() === 'input') {
                      var parent = el.parentNode;
  
                      // If input already have parent just pass through
                      if (parent.tagName.toLowerCase() === 'i' && parent.className.indexOf('waves-effect') !== -1) {
                          continue;
                      }
  
                      // Put element class and style to the specified parent
                      var wrapper = document.createElement('i');
                      wrapper.className = el.className + ' waves-input-wrapper';
  
                      var elementStyle = el.getAttribute('style');
  
                      if (!elementStyle) {
                          elementStyle = '';
                      }
  
                      wrapper.setAttribute('style', elementStyle);
  
                      el.className = 'waves-button-input';
                      el.removeAttribute('style');
  
                      // Put element as child
                      parent.replaceChild(wrapper, el);
                      wrapper.appendChild(el);
                  }
              }
          }
      };
  
  
      /**
       * Disable mousedown event for 500ms during and after touch
       */
      var TouchHandler = {
          /* uses an integer rather than bool so there's no issues with
           * needing to clear timeouts if another touch event occurred
           * within the 500ms. Cannot mouseup between touchstart and
           * touchend, nor in the 500ms after touchend. */
          touches: 0,
          allowEvent: function(e) {
              var allow = true;
  
              if (e.type === 'touchstart') {
                  TouchHandler.touches += 1; //push
              } else if (e.type === 'touchend' || e.type === 'touchcancel') {
                  setTimeout(function() {
                      if (TouchHandler.touches > 0) {
                          TouchHandler.touches -= 1; //pop after 500ms
                      }
                  }, 500);
              } else if (e.type === 'mousedown' && TouchHandler.touches > 0) {
                  allow = false;
              }
  
              return allow;
          },
          touchup: function(e) {
              TouchHandler.allowEvent(e);
          }
      };
  
  
      /**
       * Delegated click handler for .waves-effect element.
       * returns null when .waves-effect element not in "click tree"
       */
      function getWavesEffectElement(e) {
          if (TouchHandler.allowEvent(e) === false) {
              return null;
          }
  
          var element = null;
          var target = e.target || e.srcElement;
  
          while (target.parentElement !== null) {
              if (!(target instanceof SVGElement) && target.className.indexOf('waves-effect') !== -1) {
                  element = target;
                  break;
              } else if (target.classList.contains('waves-effect')) {
                  element = target;
                  break;
              }
              target = target.parentElement;
          }
  
          return element;
      }
  
      /**
       * Bubble the click and show effect if .waves-effect elem was found
       */
      function showEffect(e) {
          var element = getWavesEffectElement(e);
  
          if (element !== null) {
              Effect.show(e, element);
  
              if ('ontouchstart' in window) {
                  element.addEventListener('touchend', Effect.hide, false);
                  element.addEventListener('touchcancel', Effect.hide, false);
              }
  
              element.addEventListener('mouseup', Effect.hide, false);
              element.addEventListener('mouseleave', Effect.hide, false);
          }
      }
  
      Waves.displayEffect = function(options) {
          options = options || {};
  
          if ('duration' in options) {
              Effect.duration = options.duration;
          }
  
          //Wrap input inside <i> tag
          Effect.wrapInput($$('.waves-effect'));
  
          if ('ontouchstart' in window) {
              document.body.addEventListener('touchstart', showEffect, false);
          }
  
          document.body.addEventListener('mousedown', showEffect, false);
      };
  
      /**
       * Attach Waves to an input element (or any element which doesn't
       * bubble mouseup/mousedown events).
       *   Intended to be used with dynamically loaded forms/inputs, or
       * where the user doesn't want a delegated click handler.
       */
      Waves.attach = function(element) {
          //FUTURE: automatically add waves classes and allow users
          // to specify them with an options param? Eg. light/classic/button
          if (element.tagName.toLowerCase() === 'input') {
              Effect.wrapInput([element]);
              element = element.parentElement;
          }
  
          if ('ontouchstart' in window) {
              element.addEventListener('touchstart', showEffect, false);
          }
  
          element.addEventListener('mousedown', showEffect, false);
      };
  
      window.Waves = Waves;
  
      document.addEventListener('DOMContentLoaded', function() {
          Waves.displayEffect();
      }, false);
  
  })(window);