Add paper-menu-button and its dependencies to third_party/polymer

third_party/polymer/v1_0/components-chromium/iron-dropdown/iron-dropdown-extracted.js

+
+    (function() {
+      'use strict';
+
+      Polymer({
+        is: 'iron-dropdown',
+
+        behaviors: [
+          Polymer.IronControlState,
+          Polymer.IronA11yKeysBehavior,
+          Polymer.IronOverlayBehavior,
+          Polymer.NeonAnimationRunnerBehavior
+        ],
+
+        properties: {
+          /**
+           * The orientation against which to align the dropdown content
+           * horizontally relative to the dropdown trigger.
+           */
+          horizontalAlign: {
+            type: String,
+            value: 'left',
+            reflectToAttribute: true
+          },
+
+          /**
+           * The orientation against which to align the dropdown content
+           * vertically relative to the dropdown trigger.
+           */
+          verticalAlign: {
+            type: String,
+            value: 'top',
+            reflectToAttribute: true
+          },
+
+          /**
+           * The element that should be used to position the dropdown when
+           * it is opened.
+           */
+          positionTarget: {
+            type: Object,
+            observer: '_positionTargetChanged'
+          },
+
+          /**
+           * An animation config. If provided, this will be used to animate the
+           * opening of the dropdown.
+           */
+          openAnimationConfig: {
+            type: Object
+          },
+
+          /**
+           * An animation config. If provided, this will be used to animate the
+           * closing of the dropdown.
+           */
+          closeAnimationConfig: {
+            type: Object
+          },
+
+          /**
+           * Set to true to disable animations when opening and closing the
+           * dropdown.
+           */
+          noAnimations: {
+            type: Boolean,
+            value: false
+          },
+
+          /**
+           * We memoize the positionTarget bounding rectangle so that we can
+           * limit the number of times it is queried per resize / relayout.
+           * @type {?Object}
+           */
+          _positionRectMemo: {
+            type: Object
+          }
+        },
+
+        listeners: {
+          'neon-animation-finish': '_onNeonAnimationFinish'
+        },
+
+        observers: [
+          '_updateOverlayPosition(verticalAlign, horizontalAlign)'
+        ],
+
+        attached: function() {
+          if (this.positionTarget === undefined) {
+            this.positionTarget = this._defaultPositionTarget;
+          }
+        },
+
+        /**
+         * The element that is contained by the dropdown, if any.
+         */
+        get containedElement() {
+          return Polymer.dom(this.$.content).getDistributedNodes()[0];
+        },
+
+        get _defaultPositionTarget() {
+          var parent = Polymer.dom(this).parentNode;
+
+          if (parent.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
+            parent = parent.host;
+          }
+
+          return parent;
+        },
+
+        get _positionRect() {
+          if (!this._positionRectMemo && this.positionTarget) {
+            this._positionRectMemo = this.positionTarget.getBoundingClientRect();
+          }
+
+          return this._positionRectMemo;
+        },
+
+        get _horizontalAlignTargetValue() {
+          var target;
+
+          if (this.horizontalAlign === 'right') {
+            target = document.documentElement.clientWidth - this._positionRect.right;
+          } else {
+            target = this._positionRect.left;
+          }
+
+          return Math.max(target, 0);
+        },
+
+        get _verticalAlignTargetValue() {
+          var target;
+
+          if (this.verticalAlign === 'bottom') {
+            target = document.documentElement.clientHeight - this._positionRect.bottom;
+          } else {
+            target = this._positionRect.top;
+          }
+
+          return Math.max(target, 0);
+        },
+
+        _openedChanged: function(opened) {
+          if (opened && this.disabled) {
+            this.cancel();
+          } else {
+            this._cancelAnimations();
+            this._prepareDropdown();
+            Polymer.IronOverlayBehaviorImpl._openedChanged.apply(this, arguments);
+          }
+        },
+
+        _renderOpened: function() {
+          Polymer.IronDropdownScrollManager.pushScrollLock(this);
+          if (!this.noAnimations && this.animationConfig && this.animationConfig.open) {
+            this.$.contentWrapper.classList.add('animating');
+            this.playAnimation('open');
+          } else {
+            this._focusContent();
+            Polymer.IronOverlayBehaviorImpl._renderOpened.apply(this, arguments);
+          }
+        },
+
+        _renderClosed: function() {
+          Polymer.IronDropdownScrollManager.removeScrollLock(this);
+          if (!this.noAnimations && this.animationConfig && this.animationConfig.close) {
+            this.$.contentWrapper.classList.add('animating');
+            this.playAnimation('close');
+          } else {
+            Polymer.IronOverlayBehaviorImpl._renderClosed.apply(this, arguments);
+          }
+        },
+
+        _onNeonAnimationFinish: function() {
+          this.$.contentWrapper.classList.remove('animating');
+          if (this.opened) {
+            Polymer.IronOverlayBehaviorImpl._renderOpened.apply(this);
+          } else {
+            Polymer.IronOverlayBehaviorImpl._renderClosed.apply(this);
+          }
+        },
+
+        _onIronResize: function() {
+          var containedElement = this.containedElement;
+          var scrollTop;
+          var scrollLeft;
+
+          if (containedElement) {
+            scrollTop = containedElement.scrollTop;
+            scrollLeft = containedElement.scrollLeft;
+          }
+
+          if (this.opened) {
+            this._updateOverlayPosition();
+          }
+
+          Polymer.IronOverlayBehaviorImpl._onIronResize.apply(this, arguments);
+
+          if (containedElement) {
+            containedElement.scrollTop = scrollTop;
+            containedElement.scrollLeft = scrollLeft;
+          }
+        },
+
+        _positionTargetChanged: function() {
+          this._updateOverlayPosition();
+        },
+
+        _cancelAnimations: function() {
+          this.cancelAnimation();
+        },
+
+        _updateAnimationConfig: function() {
+          var animationConfig = {};
+          var animations = [];
+
+          if (this.openAnimationConfig) {
+            // NOTE(cdata): When making `display:none` elements visible in Safari,
+            // the element will paint once in a fully visible state, causing the
+            // dropdown to flash before it fades in. We prepend an
+            // `opaque-animation` to fix this problem:
+            animationConfig.open = [{
+              name: 'opaque-animation',
+            }].concat(this.openAnimationConfig);
+            animations = animations.concat(animationConfig.open);
+          }
+
+          if (this.closeAnimationConfig) {
+            animationConfig.close = this.closeAnimationConfig;
+            animations = animations.concat(animationConfig.close);
+          }
+
+          animations.forEach(function(animation) {
+            animation.node = this.containedElement;
+          }, this);
+
+          this.animationConfig = animationConfig;
+        },
+
+        _prepareDropdown: function() {
+          this.sizingTarget = this.containedElement || this.sizingTarget;
+          this._updateAnimationConfig();
+          this._updateOverlayPosition();
+        },
+
+        _updateOverlayPosition: function() {
+          this._positionRectMemo = null;
+
+          if (!this.positionTarget) {
+            return;
+          }
+
+          this.style[this.horizontalAlign] =
+            this._horizontalAlignTargetValue + 'px';
+
+          this.style[this.verticalAlign] =
+            this._verticalAlignTargetValue + 'px';
+
+          // NOTE(cdata): We re-memoize inline styles here, otherwise
+          // calling `refit` from `IronFitBehavior` will reset inline styles
+          // to whatever they were when the dropdown first opened.
+          if (this._fitInfo) {
+            this._fitInfo.inlineStyle[this.horizontalAlign] =
+              this.style[this.horizontalAlign];
+
+            this._fitInfo.inlineStyle[this.verticalAlign] =
+              this.style[this.verticalAlign];
+          }
+        },
+
+        _focusContent: function() {
+          if (this.containedElement) {
+            this.containedElement.focus();
+          }
+        }
+      });
+    })();
+