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Unified Diff: polymer_1.2.3/bower_components/paper-header-panel/paper-header-panel.html

Issue 1581713003: [third_party] add polymer 1.2.3 (Closed) Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master
Patch Set: 1.2.3 Created 4 years, 11 months ago
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Index: polymer_1.2.3/bower_components/paper-header-panel/paper-header-panel.html
diff --git a/polymer_1.2.3/bower_components/paper-header-panel/paper-header-panel.html b/polymer_1.2.3/bower_components/paper-header-panel/paper-header-panel.html
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index 0000000000000000000000000000000000000000..1453234d1c77d2794ac56b9e17250b71ae97b0d7
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+++ b/polymer_1.2.3/bower_components/paper-header-panel/paper-header-panel.html
@@ -0,0 +1,503 @@
+<!--
+Copyright (c) 2015 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 rel="import" href="../polymer/polymer.html">
+<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
+
+<!--
+`paper-header-panel` contains a header section and a content panel section.
+
+__Important:__ The `paper-header-panel` will not display if its parent does not have a height.
+
+Using layout classes, you can make the `paper-header-panel` fill the screen
+
+ <body class="fullbleed layout vertical">
+ <paper-header-panel class="flex">
+ <paper-toolbar>
+ <div>Hello World!</div>
+ </paper-toolbar>
+ </paper-header-panel>
+ </body>
+
+Special support is provided for scrolling modes when one uses a paper-toolbar or equivalent for the
+header section.
+
+Example:
+
+ <paper-header-panel>
+ <paper-toolbar>Header</paper-toolbar>
+ <div>Content goes here...</div>
+ </paper-header-panel>
+
+If you want to use other than `paper-toolbar` for the header, add `paper-header` class to that
+element.
+
+Example:
+
+ <paper-header-panel>
+ <div class="paper-header">Header</div>
+ <div>Content goes here...</div>
+ </paper-header-panel>
+
+To have the content fit to the main area, use the `fit` class.
+
+ <paper-header-panel>
+ <div class="paper-header">standard</div>
+ <div class="fit">content fits 100% below the header</div>
+ </paper-header-panel>
+
+### Modes
+
+Controls header and scrolling behavior. Options are `standard`, `seamed`, `waterfall`, `waterfall-tall`, `scroll` and
+`cover`. Default is `standard`.
+
+Mode | Description
+----------------|-------------
+`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 `paper-header-panel` including the header. This allows user to style the panel in such a way that the panel is partially covering the header.
+
+Example:
+
+ <paper-header-panel mode="waterfall">
+ <div class="paper-header">standard</div>
+ <div class="content fit">content fits 100% below the header</div>
+ </paper-header-panel>
+
+
+### Styling
+
+To change the shadow that shows up underneath the header:
+
+ paper-header-panel {
+ --paper-header-panel-shadow: {
+ height: 6px;
+ bottom: -6px;
+ box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4);
+ };
+ }
+
+To change the panel container in different modes:
+
+ paper-header-panel {
+ --paper-header-panel-standard-container: {
+ border: 1px solid gray;
+ };
+
+ --paper-header-panel-seamed-container: {
+ border: 1px solid gray;
+ };
+
+ --paper-header-panel-waterfall-container: {
+ border: 1px solid gray;
+ };
+
+ --paper-header-panel-waterfall-tall-container: {
+ border: 1px solid gray;
+ };
+
+ --paper-header-panel-scroll-container: {
+ border: 1px solid gray;
+ };
+
+ --paper-header-panel-cover-container: {
+ border: 1px solid gray;
+ };
+ }
+
+The following custom properties and mixins are available for styling:
+
+Custom property | Description | Default
+----------------|-------------|----------
+`--paper-header-panel` | Mixin applied to the element | `{}`
+`--paper-header-panel-body` | Mixin applied to the element's body (i.e. everything below the toolbar) | `{}`
+`--paper-header-panel-scroll-container` | Mixin applied to the container when in scroll mode | `{}`
+`--paper-header-panel-cover-container` | Mixin applied to the container when in cover mode | `{}`
+`--paper-header-panel-standard-container` | Mixin applied to the container when in standard mode | `{}`
+`--paper-header-panel-seamed-container` | Mixin applied to the container when in seamed mode | `{}`
+`--paper-header-panel-waterfall-container` | Mixin applied to the container when in waterfall mode | `{}`
+`--paper-header-panel-waterfall-tall-container` | Mixin applied to the container when in tall waterfall mode | `{}`
+
+@group Paper Elements
+@element paper-header-panel
+@demo demo/index.html
+@hero hero.svg
+-->
+
+<dom-module id="paper-header-panel">
+ <template>
+ <style>
+ :host {
+ --paper-header-panel-shadow: {
+ height: 6px;
+ bottom: -6px;
+ box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4);
+ };
+
+ @apply(--layout-vertical);
+
+ position: relative;
+ height: 100%;
+
+ @apply(--paper-header-panel);
+ }
+
+ #mainContainer {
+ @apply(--layout-flex);
+
+ position: relative;
+ overflow-y: auto;
+ overflow-x: hidden;
+ -webkit-overflow-scrolling: touch;
+ }
+
+ #mainPanel {
+ @apply(--layout-vertical);
+ @apply(--layout-flex);
+
+ position: relative;
+ min-height: 0;
+
+ @apply(--paper-header-panel-body);
+ }
+
+ /*
+ * mode: scroll
+ */
+ :host([mode=scroll]) #mainContainer {
+ @apply(--paper-header-panel-scroll-container);
+
+ overflow: visible;
+ }
+
+ :host([mode=scroll]) {
+ overflow-y: auto;
+ overflow-x: hidden;
+ -webkit-overflow-scrolling: touch;
+ }
+
+ /*
+ * mode: cover
+ */
+ :host([mode=cover]) #mainContainer {
+ @apply(--paper-header-panel-cover-container);
+
+ position: absolute;
+ top: 0;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ }
+
+ :host([mode=cover]) #mainPanel {
+ position: static;
+ }
+
+ /*
+ * mode: standard
+ */
+ :host([mode=standard]) #mainContainer {
+ @apply(--paper-header-panel-standard-container);
+ }
+
+ /*
+ * mode: seamed
+ */
+ :host([mode=seamed]) #mainContainer {
+ @apply(--paper-header-panel-seamed-container);
+ }
+
+
+ /*
+ * mode: waterfall
+ */
+ :host([mode=waterfall]) #mainContainer {
+ @apply(--paper-header-panel-waterfall-container);
+ }
+
+ /*
+ * mode: waterfall-tall
+ */
+ :host([mode=waterfall-tall]) #mainContainer {
+ @apply(--paper-header-panel-waterfall-tall-container);
+ }
+
+ #dropShadow {
+ @apply(--paper-header-panel-shadow);
+
+ position: absolute;
+ top: 0;
+ left: 0;
+ right: 0;
+ height: 6px;
+ pointer-events: none;
+
+ -webkit-transition: opacity 0.5s;
+ transition: opacity 0.5s;
+
+ opacity: 0;
+ }
+
+ #dropShadow.has-shadow {
+ opacity: 1;
+ }
+ </style>
+
+ <content id="headerContent" select="paper-toolbar, .paper-header"></content>
+
+ <div id="mainPanel">
+ <div id="mainContainer" class$="[[_computeMainContainerClass(mode)]]">
+ <content id="mainContent" select="*"></content>
+ </div>
+ <div id="dropShadow"></div>
+ </div>
+ </template>
+
+ <script>
+ (function() {
+ 'use strict';
+
+ var SHADOW_WHEN_SCROLLING = 1;
+ var SHADOW_ALWAYS = 2;
+ var MODE_CONFIGS = {
+ outerScroll: {
+ 'scroll': true
+ },
+
+ shadowMode: {
+ 'standard': SHADOW_ALWAYS,
+ 'waterfall': SHADOW_WHEN_SCROLLING,
+ 'waterfall-tall': SHADOW_WHEN_SCROLLING
+ },
+
+ tallMode: {
+ 'waterfall-tall': true
+ }
+ };
+
+ Polymer({
+ is: 'paper-header-panel',
+
+ /**
+ * Fired when the content has been scrolled. `event.detail.target` returns
+ * the scrollable element which you can use to access scroll info such as
+ * `scrollTop`.
+ *
+ * <paper-header-panel on-content-scroll="scrollHandler">
+ * ...
+ * </paper-header-panel>
+ *
+ *
+ * scrollHandler: function(event) {
+ * var scroller = event.detail.target;
+ * console.log(scroller.scrollTop);
+ * }
+ *
+ * @event content-scroll
+ */
+
+ properties: {
+ /**
+ * Controls header and scrolling behavior. Options are
+ * `standard`, `seamed`, `waterfall`, `waterfall-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 `paper-header-panel` including the
+ * header. This allows user to style the panel in such a way that the panel is
+ * partially covering the header.
+ *
+ * <paper-header-panel mode="cover">
+ * <paper-toolbar class="tall">
+ * <paper-icon-button icon="menu"></paper-icon-button>
+ * </paper-toolbar>
+ * <div class="content"></div>
+ * </paper-header-panel>
+ */
+ mode: {
+ type: String,
+ value: 'standard',
+ observer: '_modeChanged',
+ reflectToAttribute: true
+ },
+
+ /**
+ * If true, the drop-shadow is always shown no matter what mode is set to.
+ */
+ shadow: {
+ type: Boolean,
+ value: false
+ },
+
+ /**
+ * The class used in waterfall-tall mode. Change this if the header
+ * accepts a different class for toggling height, e.g. "medium-tall"
+ */
+ tallClass: {
+ type: String,
+ value: 'tall'
+ },
+
+ /**
+ * If true, the scroller is at the top
+ */
+ atTop: {
+ type: Boolean,
+ value: true,
+ readOnly: true
+ }
+ },
+
+ observers: [
+ '_computeDropShadowHidden(atTop, mode, shadow)'
+ ],
+
+ ready: function() {
+ this.scrollHandler = this._scroll.bind(this);
+ },
+
+ attached: function() {
+ this._addListener();
+ // Run `scroll` logic once to initialize class names, etc.
+ this._keepScrollingState();
+ },
+
+ detached: function() {
+ this._removeListener();
+ },
+
+ /**
+ * Returns the header element
+ *
+ * @property header
+ * @type Object
+ */
+ get header() {
+ return Polymer.dom(this.$.headerContent).getDistributedNodes()[0];
+ },
+
+ /**
+ * Returns the scrollable element.
+ *
+ * @property scroller
+ * @type Object
+ */
+ get scroller() {
+ return this._getScrollerForMode(this.mode);
+ },
+
+ /**
+ * Returns true if the scroller has a visible shadow.
+ *
+ * @property visibleShadow
+ * @type Boolean
+ */
+ get visibleShadow() {
+ return this.$.dropShadow.classList.contains('has-shadow');
+ },
+
+ _computeDropShadowHidden: function(atTop, mode, shadow) {
+ var shadowMode = MODE_CONFIGS.shadowMode[mode];
+
+ if (this.shadow) {
+ this.toggleClass('has-shadow', true, this.$.dropShadow);
+ } else if (shadowMode === SHADOW_ALWAYS) {
+ this.toggleClass('has-shadow', true, this.$.dropShadow);
+ } else if (shadowMode === SHADOW_WHEN_SCROLLING && !atTop) {
+ this.toggleClass('has-shadow', true, this.$.dropShadow);
+ } else {
+ this.toggleClass('has-shadow', false, this.$.dropShadow);
+ }
+ },
+
+ _computeMainContainerClass: function(mode) {
+ // TODO: It will be useful to have a utility for classes
+ // e.g. Polymer.Utils.classes({ foo: true });
+
+ var classes = {};
+
+ classes['flex'] = mode !== 'cover';
+
+ return Object.keys(classes).filter(
+ function(className) {
+ return classes[className];
+ }).join(' ');
+ },
+
+ _addListener: function() {
+ this.scroller.addEventListener('scroll', this.scrollHandler, false);
+ },
+
+ _removeListener: function() {
+ this.scroller.removeEventListener('scroll', this.scrollHandler);
+ },
+
+ _modeChanged: function(newMode, oldMode) {
+ var configs = MODE_CONFIGS;
+ var header = this.header;
+ var animateDuration = 200;
+
+ if (header) {
+ // in tallMode it may add tallClass to the header; so do the cleanup
+ // when mode is changed from tallMode to not tallMode
+ if (configs.tallMode[oldMode] && !configs.tallMode[newMode]) {
+ header.classList.remove(this.tallClass);
+ this.async(function() {
+ header.classList.remove('animate');
+ }, animateDuration);
+ } else {
+ header.classList.toggle('animate', configs.tallMode[newMode]);
+ }
+ }
+ this._keepScrollingState();
+ },
+
+ _keepScrollingState: function() {
+ var main = this.scroller;
+ var header = this.header;
+
+ this._setAtTop(main.scrollTop === 0);
+
+ if (header && this.tallClass && MODE_CONFIGS.tallMode[this.mode]) {
+ this.toggleClass(this.tallClass, this.atTop ||
+ header.classList.contains(this.tallClass) &&
+ main.scrollHeight < this.offsetHeight, header);
+ }
+ },
+
+ _scroll: function() {
+ this._keepScrollingState();
+ this.fire('content-scroll', {target: this.scroller}, {bubbles: false});
+ },
+
+ _getScrollerForMode: function(mode) {
+ return MODE_CONFIGS.outerScroll[mode] ?
+ this : this.$.mainContainer;
+ }
+ });
+ })();
+ </script>
+</dom-module>
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