update components
This commit is contained in:
Luke Pulverenti
parent
1f41a29864
commit
ba749de15d
18 changed files with 482 additions and 369 deletions
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@ -15,197 +15,244 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
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/**
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* @struct
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* @constructor
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* @private
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*/
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Polymer.IronOverlayManagerClass = function() {
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/**
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* Used to keep track of the opened overlays.
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* @private {Array<Element>}
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*/
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this._overlays = [];
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// Used to keep track of the last focused node before an overlay gets opened.
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/**
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* Used to keep track of the last focused node before an overlay gets opened.
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* @private {Array<Element>}
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*/
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this._lastFocusedNodes = [];
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/**
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* iframes have a default z-index of 100, so this default should be at least
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* that.
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* iframes have a default z-index of 100,
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* so this default should be at least that.
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* @private {number}
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*/
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this._minimumZ = 101;
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/**
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* Used to keep track of the opened overlays with backdrop.
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* @private {Array<Element>}
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*/
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this._backdrops = [];
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/**
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* Memoized backdrop element.
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* @private {Element|null}
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*/
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this._backdropElement = null;
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Object.defineProperty(this, 'backdropElement', {
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get: function() {
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if (!this._backdropElement) {
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this._backdropElement = document.createElement('iron-overlay-backdrop');
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}
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return this._backdropElement;
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}.bind(this)
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});
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};
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Polymer.IronOverlayManagerClass.prototype = {
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constructor: Polymer.IronOverlayManagerClass,
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/**
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* The shared backdrop element.
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* @type {Element} backdropElement
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*/
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get backdropElement() {
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if (!this._backdropElement) {
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this._backdropElement = document.createElement('iron-overlay-backdrop');
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}
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return this._backdropElement;
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},
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/**
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* The deepest active element.
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* returns {?Node} element the active element
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* @type {Element|undefined} activeElement the active element
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*/
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this.deepActiveElement = null;
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Object.defineProperty(this, 'deepActiveElement', {
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get: function() {
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var active = document.activeElement;
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// document.activeElement can be null
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// https://developer.mozilla.org/en-US/docs/Web/API/Document/activeElement
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while (active && active.root && Polymer.dom(active.root).activeElement) {
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active = Polymer.dom(active.root).activeElement;
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get deepActiveElement() {
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var active = document.activeElement;
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// document.activeElement can be null
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// https://developer.mozilla.org/en-US/docs/Web/API/Document/activeElement
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while (active && active.root && Polymer.dom(active.root).activeElement) {
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active = Polymer.dom(active.root).activeElement;
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}
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return active;
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},
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/**
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* If a node is contained in an overlay.
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* @param {Element=} node
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* @return {boolean}
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* @private
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*/
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_isChildOfOverlay: function(node) {
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while (node && node !== document.body) {
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// Use logical parentNode, or native ShadowRoot host.
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node = Polymer.dom(node).parentNode || node.host;
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// Check if it is an overlay.
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if (node && node.behaviors && node.behaviors.indexOf(Polymer.IronOverlayBehaviorImpl) !== -1) {
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return true;
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}
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return active;
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}.bind(this)
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});
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};
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/**
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* If a node is contained in an overlay.
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* @private
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* @param {Node} node
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* @returns {Boolean}
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*/
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Polymer.IronOverlayManagerClass.prototype._isChildOfOverlay = function(node) {
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while (node && node !== document.body) {
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// Use logical parentNode, or native ShadowRoot host.
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node = Polymer.dom(node).parentNode || node.host;
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// Check if it is an overlay.
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if (node && node.behaviors && node.behaviors.indexOf(Polymer.IronOverlayBehaviorImpl) !== -1) {
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return true;
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}
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}
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return false;
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};
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return false;
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},
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Polymer.IronOverlayManagerClass.prototype._applyOverlayZ = function(overlay, aboveZ) {
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this._setZ(overlay, aboveZ + 2);
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};
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/**
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* @param {Element} overlay
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* @param {number} aboveZ
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* @private
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*/
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_applyOverlayZ: function(overlay, aboveZ) {
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this._setZ(overlay, aboveZ + 2);
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},
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Polymer.IronOverlayManagerClass.prototype._setZ = function(element, z) {
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element.style.zIndex = z;
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};
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/**
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* @param {Element} element
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* @param {number|string} z
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* @private
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*/
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_setZ: function(element, z) {
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element.style.zIndex = z;
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},
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/**
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* track overlays for z-index and focus managemant
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*/
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Polymer.IronOverlayManagerClass.prototype.addOverlay = function(overlay) {
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var minimumZ = Math.max(this.currentOverlayZ(), this._minimumZ);
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this._overlays.push(overlay);
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var newZ = this.currentOverlayZ();
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if (newZ <= minimumZ) {
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this._applyOverlayZ(overlay, minimumZ);
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}
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var element = this.deepActiveElement;
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// If already in other overlay, don't reset focus there.
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if (this._isChildOfOverlay(element)) {
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element = null;
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}
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this._lastFocusedNodes.push(element);
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};
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Polymer.IronOverlayManagerClass.prototype.removeOverlay = function(overlay) {
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var i = this._overlays.indexOf(overlay);
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if (i >= 0) {
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this._overlays.splice(i, 1);
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this._setZ(overlay, '');
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var node = this._lastFocusedNodes[i];
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// Focus only if still contained in document.body
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if (overlay.restoreFocusOnClose && node && Polymer.dom(document.body).deepContains(node)) {
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node.focus();
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/**
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* Tracks overlays for z-index and focus management.
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* @param {Element} overlay
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*/
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addOverlay: function(overlay) {
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var minimumZ = Math.max(this.currentOverlayZ(), this._minimumZ);
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this._overlays.push(overlay);
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var newZ = this.currentOverlayZ();
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if (newZ <= minimumZ) {
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this._applyOverlayZ(overlay, minimumZ);
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}
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this._lastFocusedNodes.splice(i, 1);
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}
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};
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Polymer.IronOverlayManagerClass.prototype.currentOverlay = function() {
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var i = this._overlays.length - 1;
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while (this._overlays[i] && !this._overlays[i].opened) {
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--i;
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}
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return this._overlays[i];
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};
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Polymer.IronOverlayManagerClass.prototype.currentOverlayZ = function() {
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return this._getOverlayZ(this.currentOverlay());
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};
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/**
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* Ensures that the minimum z-index of new overlays is at least `minimumZ`.
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* This does not effect the z-index of any existing overlays.
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*
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* @param {number} minimumZ
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*/
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Polymer.IronOverlayManagerClass.prototype.ensureMinimumZ = function(minimumZ) {
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this._minimumZ = Math.max(this._minimumZ, minimumZ);
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};
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Polymer.IronOverlayManagerClass.prototype.focusOverlay = function() {
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var current = this.currentOverlay();
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// We have to be careful to focus the next overlay _after_ any current
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// transitions are complete (due to the state being toggled prior to the
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// transition). Otherwise, we risk infinite recursion when a transitioning
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// (closed) overlay becomes the current overlay.
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//
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// NOTE: We make the assumption that any overlay that completes a transition
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// will call into focusOverlay to kick the process back off. Currently:
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// transitionend -> _applyFocus -> focusOverlay.
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if (current && !current.transitioning) {
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current._applyFocus();
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}
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};
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Polymer.IronOverlayManagerClass.prototype.trackBackdrop = function(element) {
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// backdrops contains the overlays with a backdrop that are currently
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// visible
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var index = this._backdrops.indexOf(element);
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if (element.opened && element.withBackdrop) {
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// no duplicates
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if (index === -1) {
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this._backdrops.push(element);
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var element = this.deepActiveElement;
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// If already in other overlay, don't reset focus there.
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if (this._isChildOfOverlay(element)) {
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element = null;
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}
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} else if (index >= 0) {
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this._backdrops.splice(index, 1);
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}
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};
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this._lastFocusedNodes.push(element);
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},
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Polymer.IronOverlayManagerClass.prototype.getBackdrops = function() {
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return this._backdrops;
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};
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/**
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* @param {Element} overlay
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*/
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removeOverlay: function(overlay) {
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var i = this._overlays.indexOf(overlay);
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if (i >= 0) {
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this._overlays.splice(i, 1);
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this._setZ(overlay, '');
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/**
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* Returns the z-index for the backdrop.
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*/
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Polymer.IronOverlayManagerClass.prototype.backdropZ = function() {
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return this._getOverlayZ(this._overlayWithBackdrop()) - 1;
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};
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/**
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* Returns the first opened overlay that has a backdrop.
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*/
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Polymer.IronOverlayManagerClass.prototype._overlayWithBackdrop = function() {
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for (var i = 0; i < this._overlays.length; i++) {
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if (this._overlays[i].opened && this._overlays[i].withBackdrop) {
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return this._overlays[i];
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var node = this._lastFocusedNodes[i];
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// Focus only if still contained in document.body
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if (overlay.restoreFocusOnClose && node && Polymer.dom(document.body).deepContains(node)) {
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node.focus();
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}
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this._lastFocusedNodes.splice(i, 1);
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}
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}
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};
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},
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/**
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* Calculates the minimum z-index for the overlay.
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*/
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Polymer.IronOverlayManagerClass.prototype._getOverlayZ = function(overlay) {
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var z = this._minimumZ;
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if (overlay) {
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var z1 = Number(window.getComputedStyle(overlay).zIndex);
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// Check if is a number
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// Number.isNaN not supported in IE 10+
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if (z1 === z1) {
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z = z1;
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/**
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* @return {Element|undefined} overlay The current overlay.
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*/
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currentOverlay: function() {
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var i = this._overlays.length - 1;
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while (this._overlays[i] && !this._overlays[i].opened) {
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--i;
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}
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return this._overlays[i];
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},
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/**
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* @return {number} zIndex the current overlay z-index.
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*/
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currentOverlayZ: function() {
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return this._getOverlayZ(this.currentOverlay());
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},
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/**
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* Ensures that the minimum z-index of new overlays is at least `minimumZ`.
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* This does not effect the z-index of any existing overlays.
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* @param {number} minimumZ
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*/
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ensureMinimumZ: function(minimumZ) {
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this._minimumZ = Math.max(this._minimumZ, minimumZ);
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},
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focusOverlay: function() {
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var current = /** @type {?} */ (this.currentOverlay());
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// We have to be careful to focus the next overlay _after_ any current
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// transitions are complete (due to the state being toggled prior to the
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// transition). Otherwise, we risk infinite recursion when a transitioning
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// (closed) overlay becomes the current overlay.
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//
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// NOTE: We make the assumption that any overlay that completes a transition
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// will call into focusOverlay to kick the process back off. Currently:
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// transitionend -> _applyFocus -> focusOverlay.
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if (current && !current.transitioning) {
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current._applyFocus();
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}
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},
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/**
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* @param {Element} overlay The overlay that updated its withBackdrop.
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*/
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trackBackdrop: function(overlay) {
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var index = this._backdrops.indexOf(overlay);
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if (overlay.opened && overlay.withBackdrop) {
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// no duplicates
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if (index === -1) {
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this._backdrops.push(overlay);
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}
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} else if (index >= 0) {
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this._backdrops.splice(index, 1);
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}
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},
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/**
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* @return {Array<Element>} backdrops
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*/
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getBackdrops: function() {
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return this._backdrops;
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},
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/**
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* @return {number} index The z-index for the backdrop.
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*/
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backdropZ: function() {
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return this._getOverlayZ(this._overlayWithBackdrop()) - 1;
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},
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/**
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* @return {Element|undefined} overlay The first opened overlay that has a backdrop.
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* @private
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*/
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_overlayWithBackdrop: function() {
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for (var i = 0; i < this._overlays.length; i++) {
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if (this._overlays[i].opened && this._overlays[i].withBackdrop) {
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return this._overlays[i];
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}
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}
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},
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/**
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* Calculates the minimum z-index for the overlay.
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* @param {Element=} overlay
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* @private
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*/
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_getOverlayZ: function(overlay) {
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var z = this._minimumZ;
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if (overlay) {
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var z1 = Number(window.getComputedStyle(overlay).zIndex);
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// Check if is a number
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// Number.isNaN not supported in IE 10+
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if (z1 === z1) {
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z = z1;
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}
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}
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return z;
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}
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return z;
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};
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Polymer.IronOverlayManager = new Polymer.IronOverlayManagerClass();
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</script>
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