npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

bower_components/core-animated-pages/transitions/core-transition-pages.html

-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<link href="../../polymer/polymer.html" rel="import">
-<link href="../../core-style/core-style.html" rel="import">
-<link href="../../core-transition/core-transition.html" rel="import">
-
-<!--
-
-`core-transition-pages` represents a page transition, which may include CSS and/or
-script. It will look for a `core-style` element with the same `id` to install in the
-scope of the `core-animated-pages` that's using the transition.
-
-Example:
-
-    <core-style id="fooTransition">
-        // some CSS here
-    </core-style>
-    <core-transition-pages id="fooTransition"></core-transition-pages>
-
-There are three stages to a page transition:
-
-1. `prepare`: Called to set up the incoming and outgoing pages to the "before" state,
-  e.g. setting the incoming page to `opacity: 0` for `cross-fade` or find and
-  measure hero elements for `hero-transition`.
-
-2. `go`: Called to run the transition. For CSS-based transitions, this generally
-  applies a CSS `transition` property.
-
-3. `complete`: Called when the elements are finished transitioning.
-
-See the individual transition documentation for specific details.
-
-@element core-transition-pages
-@extends core-transition
-@status beta
-@homepage github.io
--->
-<!--
-Fired when the transition completes.
-
-@event core-transitionend
--->
-<polymer-element name="core-transition-pages" extends="core-transition">
-<script>
-
-(function () {
-
-// create some basic transition styling data.
-var transitions = CoreStyle.g.transitions = CoreStyle.g.transitions || {};
-transitions.duration = '500ms';
-transitions.heroDelay = '50ms';
-transitions.scaleDelay = '500ms';
-transitions.cascadeFadeDuration = '250ms';
-
-Polymer({
-
-  publish: {
-    /**
-     * This class will be applied to the scope element in the `prepare` function.
-     * It is removed in the `complete` function. Used to activate a set of CSS
-     * rules that need to apply before the transition runs, e.g. a default opacity
-     * or transform for the non-active pages.
-     *
-     * @attribute scopeClass
-     * @type string
-     * @default ''
-     */
-    scopeClass: '',
-
-    /**
-     * This class will be applied to the scope element in the `go` function. It is
-     * remoived in the `complete' function. Generally used to apply a CSS transition
-     * rule only during the transition.
-     *
-     * @attribute activeClass
-     * @type string
-     * @default ''
-     */
-    activeClass: '',
-
-    /**
-     * Specifies which CSS property to look for when it receives a `transitionEnd` event
-     * to determine whether the transition is complete. If not specified, the first
-     * transitionEnd event received will complete the transition.
-     *
-     * @attribute transitionProperty
-     * @type string
-     * @default ''
-     */
-    transitionProperty: ''
-  },
-
-  /**
-   * True if this transition is complete.
-   *
-   * @attribute completed
-   * @type boolean
-   * @default false
-   */
-  completed: false,
-
-  prepare: function(scope, options) {
-    this.boundCompleteFn = this.complete.bind(this, scope);
-    if (this.scopeClass) {
-      scope.classList.add(this.scopeClass);
-    }
-  },
-
-  go: function(scope, options) {
-    this.completed = false;
-    if (this.activeClass) {
-      scope.classList.add(this.activeClass);
-    }
-    scope.addEventListener('transitionend', this.boundCompleteFn, false);
-  },
-
-  setup: function(scope) {
-    if (!scope._pageTransitionStyles) {
-      scope._pageTransitionStyles = {};
-    }
-
-    var name = this.calcStyleName();
-    
-    if (!scope._pageTransitionStyles[name]) {
-      this.installStyleInScope(scope, name);
-      scope._pageTransitionStyles[name] = true;
-    }
-  },
-
-  calcStyleName: function() {
-    return this.id || this.localName;
-  },
-
-  installStyleInScope: function(scope, id) {
-    if (!scope.shadowRoot) {
-      scope.createShadowRoot().innerHTML = '<content></content>';
-    }
-    var root = scope.shadowRoot;
-    var scopeStyle = document.createElement('core-style');
-    root.insertBefore(scopeStyle, root.firstChild);
-    scopeStyle.applyRef(id);
-  },
-
-  complete: function(scope, e) {
-    // TODO(yvonne): hack, need to manage completion better
-    if (e.propertyName !== 'box-shadow' && (!this.transitionProperty || e.propertyName.indexOf(this.transitionProperty) !== -1)) {
-      this.completed = true;
-      this.fire('core-transitionend', this, scope);
-    }
-  },
-
-  // TODO(sorvell): ideally we do this in complete.
-  ensureComplete: function(scope) {
-    scope.removeEventListener('transitionend', this.boundCompleteFn, false);
-    if (this.scopeClass) {
-      scope.classList.remove(this.scopeClass);
-    }
-    if (this.activeClass) {
-      scope.classList.remove(this.activeClass);
-    }
-  }
-
-});
-
-})();
-
-</script>
-</polymer-element>