Index: third_party/polymer/components-chromium/core-header-panel/core-header-panel-extracted.js |
diff --git a/third_party/polymer/components-chromium/core-header-panel/core-header-panel-extracted.js b/third_party/polymer/components-chromium/core-header-panel/core-header-panel-extracted.js |
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index 0000000000000000000000000000000000000000..8a0c7bcd814b0ce5d5ef6d08d5e6535602cb8850 |
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+++ b/third_party/polymer/components-chromium/core-header-panel/core-header-panel-extracted.js |
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+ |
+ |
+ Polymer('core-header-panel', { |
+ |
+ /** |
+ * Fired when the content has been scrolled. `details.target` returns |
+ * the scrollable element which you can use to access scroll info such as |
+ * `scrollTop`. |
+ * |
+ * @event scroll |
+ */ |
+ |
+ publish: { |
+ /** |
+ * Controls header and scrolling behavior. Options are |
+ * `standard`, `seamed`, `waterfall`, `waterfall-tall`, |
+ * `waterfall-medium-tall`, `scroll` and `cover`. |
+ * Default is `standard`. |
+ * |
+ * `standard`: The header is a step above the panel. The header will consume the |
+ * panel at the point of entry, preventing it from passing through to the |
+ * opposite side. |
+ * |
+ * `seamed`: The header is presented as seamed with the panel. |
+ * |
+ * `waterfall`: Similar to standard mode, but header is initially presented as |
+ * seamed with panel, but then separates to form the step. |
+ * |
+ * `waterfall-tall`: The header is initially taller (`tall` class is added to |
+ * the header). As the user scrolls, the header separates (forming an edge) |
+ * while condensing (`tall` class is removed from the header). |
+ * |
+ * `scroll`: The header keeps its seam with the panel, and is pushed off screen. |
+ * |
+ * `cover`: The panel covers the whole `core-header-panel` including the |
+ * header. This allows user to style the panel in such a way that the panel is |
+ * partially covering the header. |
+ * |
+ * <style> |
+ * core-header-panel[mode=cover]::shadow #mainContainer { |
+ * left: 80px; |
+ * } |
+ * .content { |
+ * margin: 60px 60px 60px 0; |
+ * } |
+ * </style> |
+ * |
+ * <core-header-panel mode="cover"> |
+ * <core-appbar class="tall"> |
+ * <core-icon-button icon="menu"></core-icon-button> |
+ * </core-appbar> |
+ * <div class="content"></div> |
+ * </core-header-panel> |
+ * |
+ * @attribute mode |
+ * @type string |
+ * @default '' |
+ */ |
+ mode: {value: '', reflect: true}, |
+ |
+ /** |
+ * The class used in waterfall-tall mode. Change this if the header |
+ * accepts a different class for toggling height, e.g. "medium-tall" |
+ * |
+ * @attribute tallClass |
+ * @type string |
+ * @default 'tall' |
+ */ |
+ tallClass: 'tall', |
+ |
+ /** |
+ * If true, the drop-shadow is always shown no matter what mode is set to. |
+ * |
+ * @attribute shadow |
+ * @type boolean |
+ * @default false |
+ */ |
+ shadow: false |
+ }, |
+ |
+ domReady: function() { |
+ this.async('scroll'); |
+ }, |
+ |
+ modeChanged: function() { |
+ this.scroll(); |
+ }, |
+ |
+ get header() { |
+ return this.$.headerContent.getDistributedNodes()[0]; |
+ }, |
+ |
+ /** |
+ * Returns the scrollable element. |
+ * |
+ * @property scroller |
+ * @type Object |
+ */ |
+ get scroller() { |
+ return this.mode === 'scroll' ? |
+ this.$.outerContainer : this.$.mainContainer; |
+ }, |
+ |
+ scroll: function() { |
+ var shadowMode = {'waterfall': 1, 'waterfall-tall': 1}; |
+ var noShadow = {'seamed': 1, 'cover': 1, 'scroll': 1}; |
+ var tallMode = {'waterfall-tall': 1}; |
+ |
+ var main = this.$.mainContainer; |
+ var header = this.header; |
+ |
+ var sTop = main.scrollTop; |
+ var atTop = sTop === 0; |
+ |
+ if (header) { |
+ this.$.dropShadow.classList.toggle('hidden', !this.shadow && |
+ (atTop && shadowMode[this.mode] || noShadow[this.mode])); |
+ |
+ if (tallMode[this.mode]) { |
+ header.classList.toggle(this.tallClass, atTop || |
+ main.scrollHeight < this.$.outerContainer.offsetHeight); |
+ } |
+ |
+ header.classList.toggle('animate', tallMode[this.mode]); |
+ } |
+ |
+ this.fire('scroll', {target: this.scroller}, this, false); |
+ } |
+ |
+ }); |
+ |