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| 1 <!-- |
| 2 Copyright (c) 2015 The Polymer Project Authors. All rights reserved. |
| 3 This code may only be used under the BSD style license found at http://polymer.g
ithub.io/LICENSE.txt |
| 4 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt |
| 5 The complete set of contributors may be found at http://polymer.github.io/CONTRI
BUTORS.txt |
| 6 Code distributed by Google as part of the polymer project is also |
| 7 subject to an additional IP rights grant found at http://polymer.github.io/PATEN
TS.txt |
| 8 --> |
| 9 |
| 10 <link rel="import" href="../polymer/polymer.html"> |
| 11 <link rel="import" href="../iron-flex-layout/iron-flex-layout.html"> |
| 12 |
| 13 <!-- |
| 14 `paper-header-panel` contains a header section and a content panel section. |
| 15 |
| 16 __Important:__ The `paper-header-panel` will not display if its parent does not
have a height. |
| 17 |
| 18 Using layout classes, you can make the `paper-header-panel` fill the screen |
| 19 |
| 20 <body class="fullbleed layout vertical"> |
| 21 <paper-header-panel class="flex"> |
| 22 <paper-toolbar> |
| 23 <div>Hello World!</div> |
| 24 </paper-toolbar> |
| 25 </paper-header-panel> |
| 26 </body> |
| 27 |
| 28 Special support is provided for scrolling modes when one uses a paper-toolbar or
equivalent for the |
| 29 header section. |
| 30 |
| 31 Example: |
| 32 |
| 33 <paper-header-panel> |
| 34 <paper-toolbar>Header</paper-toolbar> |
| 35 <div>Content goes here...</div> |
| 36 </paper-header-panel> |
| 37 |
| 38 If you want to use other than `paper-toolbar` for the header, add `paper-header`
class to that |
| 39 element. |
| 40 |
| 41 Example: |
| 42 |
| 43 <paper-header-panel> |
| 44 <div class="paper-header">Header</div> |
| 45 <div>Content goes here...</div> |
| 46 </paper-header-panel> |
| 47 |
| 48 To have the content fit to the main area, use the `fit` class. |
| 49 |
| 50 <paper-header-panel> |
| 51 <div class="paper-header">standard</div> |
| 52 <div class="fit">content fits 100% below the header</div> |
| 53 </paper-header-panel> |
| 54 |
| 55 ### Modes |
| 56 |
| 57 Controls header and scrolling behavior. Options are `standard`, `seamed`, `water
fall`, `waterfall-tall`, `scroll` and |
| 58 `cover`. Default is `standard`. |
| 59 |
| 60 Mode | Description |
| 61 ----------------|------------- |
| 62 `standard` | The header is a step above the panel. The header will consume the p
anel at the point of entry, preventing it from passing through to the opposite s
ide. |
| 63 `seamed` | The header is presented as seamed with the panel. |
| 64 `waterfall` | Similar to standard mode, but header is initially presented as sea
med with panel, but then separates to form the step. |
| 65 `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 conde
nsing (`tall` class is removed from the header). |
| 66 `scroll` | The header keeps its seam with the panel, and is pushed off screen. |
| 67 `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 co
vering the header. |
| 68 |
| 69 Example: |
| 70 |
| 71 <paper-header-panel mode="waterfall"> |
| 72 <div class="paper-header">standard</div> |
| 73 <div class="content fit">content fits 100% below the header</div> |
| 74 </paper-header-panel> |
| 75 |
| 76 |
| 77 ### Styling |
| 78 |
| 79 To change the shadow that shows up underneath the header: |
| 80 |
| 81 paper-header-panel { |
| 82 --paper-header-panel-shadow: { |
| 83 height: 6px; |
| 84 bottom: -6px; |
| 85 box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4); |
| 86 }; |
| 87 } |
| 88 |
| 89 To change the panel container in different modes: |
| 90 |
| 91 paper-header-panel { |
| 92 --paper-header-panel-standard-container: { |
| 93 border: 1px solid gray; |
| 94 }; |
| 95 |
| 96 --paper-header-panel-seamed-container: { |
| 97 border: 1px solid gray; |
| 98 }; |
| 99 |
| 100 --paper-header-panel-waterfall-container: { |
| 101 border: 1px solid gray; |
| 102 }; |
| 103 |
| 104 --paper-header-panel-waterfall-tall-container: { |
| 105 border: 1px solid gray; |
| 106 }; |
| 107 |
| 108 --paper-header-panel-scroll-container: { |
| 109 border: 1px solid gray; |
| 110 }; |
| 111 |
| 112 --paper-header-panel-cover-container: { |
| 113 border: 1px solid gray; |
| 114 }; |
| 115 } |
| 116 |
| 117 The following custom properties and mixins are available for styling: |
| 118 |
| 119 Custom property | Description | Default |
| 120 ----------------|-------------|---------- |
| 121 `--paper-header-panel` | Mixin applied to the element | `{}` |
| 122 `--paper-header-panel-body` | Mixin applied to the element's body (i.e. everythi
ng below the toolbar) | `{}` |
| 123 `--paper-header-panel-scroll-container` | Mixin applied to the container when in
scroll mode | `{}` |
| 124 `--paper-header-panel-cover-container` | Mixin applied to the container when in
cover mode | `{}` |
| 125 `--paper-header-panel-standard-container` | Mixin applied to the container when
in standard mode | `{}` |
| 126 `--paper-header-panel-seamed-container` | Mixin applied to the container when in
seamed mode | `{}` |
| 127 `--paper-header-panel-waterfall-container` | Mixin applied to the container when
in waterfall mode | `{}` |
| 128 `--paper-header-panel-waterfall-tall-container` | Mixin applied to the container
when in tall waterfall mode | `{}` |
| 129 |
| 130 @group Paper Elements |
| 131 @element paper-header-panel |
| 132 @demo demo/index.html |
| 133 @hero hero.svg |
| 134 --> |
| 135 |
| 136 <dom-module id="paper-header-panel"> |
| 137 <template> |
| 138 <style> |
| 139 :host { |
| 140 --paper-header-panel-shadow: { |
| 141 height: 6px; |
| 142 bottom: -6px; |
| 143 box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4); |
| 144 }; |
| 145 |
| 146 @apply(--layout-vertical); |
| 147 |
| 148 position: relative; |
| 149 height: 100%; |
| 150 |
| 151 @apply(--paper-header-panel); |
| 152 } |
| 153 |
| 154 #mainContainer { |
| 155 @apply(--layout-flex); |
| 156 |
| 157 position: relative; |
| 158 overflow-y: auto; |
| 159 overflow-x: hidden; |
| 160 -webkit-overflow-scrolling: touch; |
| 161 } |
| 162 |
| 163 #mainPanel { |
| 164 @apply(--layout-vertical); |
| 165 @apply(--layout-flex); |
| 166 |
| 167 position: relative; |
| 168 min-height: 0; |
| 169 |
| 170 @apply(--paper-header-panel-body); |
| 171 } |
| 172 |
| 173 /* |
| 174 * mode: scroll |
| 175 */ |
| 176 :host([mode=scroll]) #mainContainer { |
| 177 @apply(--paper-header-panel-scroll-container); |
| 178 |
| 179 overflow: visible; |
| 180 } |
| 181 |
| 182 :host([mode=scroll]) { |
| 183 overflow-y: auto; |
| 184 overflow-x: hidden; |
| 185 -webkit-overflow-scrolling: touch; |
| 186 } |
| 187 |
| 188 /* |
| 189 * mode: cover |
| 190 */ |
| 191 :host([mode=cover]) #mainContainer { |
| 192 @apply(--paper-header-panel-cover-container); |
| 193 |
| 194 position: absolute; |
| 195 top: 0; |
| 196 right: 0; |
| 197 bottom: 0; |
| 198 left: 0; |
| 199 } |
| 200 |
| 201 :host([mode=cover]) #mainPanel { |
| 202 position: static; |
| 203 } |
| 204 |
| 205 /* |
| 206 * mode: standard |
| 207 */ |
| 208 :host([mode=standard]) #mainContainer { |
| 209 @apply(--paper-header-panel-standard-container); |
| 210 } |
| 211 |
| 212 /* |
| 213 * mode: seamed |
| 214 */ |
| 215 :host([mode=seamed]) #mainContainer { |
| 216 @apply(--paper-header-panel-seamed-container); |
| 217 } |
| 218 |
| 219 |
| 220 /* |
| 221 * mode: waterfall |
| 222 */ |
| 223 :host([mode=waterfall]) #mainContainer { |
| 224 @apply(--paper-header-panel-waterfall-container); |
| 225 } |
| 226 |
| 227 /* |
| 228 * mode: waterfall-tall |
| 229 */ |
| 230 :host([mode=waterfall-tall]) #mainContainer { |
| 231 @apply(--paper-header-panel-waterfall-tall-container); |
| 232 } |
| 233 |
| 234 #dropShadow { |
| 235 @apply(--paper-header-panel-shadow); |
| 236 |
| 237 position: absolute; |
| 238 top: 0; |
| 239 left: 0; |
| 240 right: 0; |
| 241 height: 6px; |
| 242 pointer-events: none; |
| 243 |
| 244 -webkit-transition: opacity 0.5s; |
| 245 transition: opacity 0.5s; |
| 246 |
| 247 opacity: 0; |
| 248 } |
| 249 |
| 250 #dropShadow.has-shadow { |
| 251 opacity: 1; |
| 252 } |
| 253 </style> |
| 254 |
| 255 <content id="headerContent" select="paper-toolbar, .paper-header"></content> |
| 256 |
| 257 <div id="mainPanel"> |
| 258 <div id="mainContainer" class$="[[_computeMainContainerClass(mode)]]"> |
| 259 <content id="mainContent" select="*"></content> |
| 260 </div> |
| 261 <div id="dropShadow"></div> |
| 262 </div> |
| 263 </template> |
| 264 |
| 265 <script> |
| 266 (function() { |
| 267 'use strict'; |
| 268 |
| 269 var SHADOW_WHEN_SCROLLING = 1; |
| 270 var SHADOW_ALWAYS = 2; |
| 271 var MODE_CONFIGS = { |
| 272 outerScroll: { |
| 273 'scroll': true |
| 274 }, |
| 275 |
| 276 shadowMode: { |
| 277 'standard': SHADOW_ALWAYS, |
| 278 'waterfall': SHADOW_WHEN_SCROLLING, |
| 279 'waterfall-tall': SHADOW_WHEN_SCROLLING |
| 280 }, |
| 281 |
| 282 tallMode: { |
| 283 'waterfall-tall': true |
| 284 } |
| 285 }; |
| 286 |
| 287 Polymer({ |
| 288 is: 'paper-header-panel', |
| 289 |
| 290 /** |
| 291 * Fired when the content has been scrolled. `event.detail.target` retu
rns |
| 292 * the scrollable element which you can use to access scroll info such a
s |
| 293 * `scrollTop`. |
| 294 * |
| 295 * <paper-header-panel on-content-scroll="scrollHandler"> |
| 296 * ... |
| 297 * </paper-header-panel> |
| 298 * |
| 299 * |
| 300 * scrollHandler: function(event) { |
| 301 * var scroller = event.detail.target; |
| 302 * console.log(scroller.scrollTop); |
| 303 * } |
| 304 * |
| 305 * @event content-scroll |
| 306 */ |
| 307 |
| 308 properties: { |
| 309 /** |
| 310 * Controls header and scrolling behavior. Options are |
| 311 * `standard`, `seamed`, `waterfall`, `waterfall-tall`, `scroll` and |
| 312 * `cover`. Default is `standard`. |
| 313 * |
| 314 * `standard`: The header is a step above the panel. The header will c
onsume the |
| 315 * panel at the point of entry, preventing it from passing through to
the |
| 316 * opposite side. |
| 317 * |
| 318 * `seamed`: The header is presented as seamed with the panel. |
| 319 * |
| 320 * `waterfall`: Similar to standard mode, but header is initially pres
ented as |
| 321 * seamed with panel, but then separates to form the step. |
| 322 * |
| 323 * `waterfall-tall`: The header is initially taller (`tall` class is a
dded to |
| 324 * the header). As the user scrolls, the header separates (forming an
edge) |
| 325 * while condensing (`tall` class is removed from the header). |
| 326 * |
| 327 * `scroll`: The header keeps its seam with the panel, and is pushed o
ff screen. |
| 328 * |
| 329 * `cover`: The panel covers the whole `paper-header-panel` including
the |
| 330 * header. This allows user to style the panel in such a way that the
panel is |
| 331 * partially covering the header. |
| 332 * |
| 333 * <paper-header-panel mode="cover"> |
| 334 * <paper-toolbar class="tall"> |
| 335 * <paper-icon-button icon="menu"></paper-icon-button> |
| 336 * </paper-toolbar> |
| 337 * <div class="content"></div> |
| 338 * </paper-header-panel> |
| 339 */ |
| 340 mode: { |
| 341 type: String, |
| 342 value: 'standard', |
| 343 observer: '_modeChanged', |
| 344 reflectToAttribute: true |
| 345 }, |
| 346 |
| 347 /** |
| 348 * If true, the drop-shadow is always shown no matter what mode is set
to. |
| 349 */ |
| 350 shadow: { |
| 351 type: Boolean, |
| 352 value: false |
| 353 }, |
| 354 |
| 355 /** |
| 356 * The class used in waterfall-tall mode. Change this if the header |
| 357 * accepts a different class for toggling height, e.g. "medium-tall" |
| 358 */ |
| 359 tallClass: { |
| 360 type: String, |
| 361 value: 'tall' |
| 362 }, |
| 363 |
| 364 /** |
| 365 * If true, the scroller is at the top |
| 366 */ |
| 367 atTop: { |
| 368 type: Boolean, |
| 369 value: true, |
| 370 readOnly: true |
| 371 } |
| 372 }, |
| 373 |
| 374 observers: [ |
| 375 '_computeDropShadowHidden(atTop, mode, shadow)' |
| 376 ], |
| 377 |
| 378 ready: function() { |
| 379 this.scrollHandler = this._scroll.bind(this); |
| 380 }, |
| 381 |
| 382 attached: function() { |
| 383 this._addListener(); |
| 384 // Run `scroll` logic once to initialize class names, etc. |
| 385 this._keepScrollingState(); |
| 386 }, |
| 387 |
| 388 detached: function() { |
| 389 this._removeListener(); |
| 390 }, |
| 391 |
| 392 /** |
| 393 * Returns the header element |
| 394 * |
| 395 * @property header |
| 396 * @type Object |
| 397 */ |
| 398 get header() { |
| 399 return Polymer.dom(this.$.headerContent).getDistributedNodes()[0]; |
| 400 }, |
| 401 |
| 402 /** |
| 403 * Returns the scrollable element. |
| 404 * |
| 405 * @property scroller |
| 406 * @type Object |
| 407 */ |
| 408 get scroller() { |
| 409 return this._getScrollerForMode(this.mode); |
| 410 }, |
| 411 |
| 412 /** |
| 413 * Returns true if the scroller has a visible shadow. |
| 414 * |
| 415 * @property visibleShadow |
| 416 * @type Boolean |
| 417 */ |
| 418 get visibleShadow() { |
| 419 return this.$.dropShadow.classList.contains('has-shadow'); |
| 420 }, |
| 421 |
| 422 _computeDropShadowHidden: function(atTop, mode, shadow) { |
| 423 var shadowMode = MODE_CONFIGS.shadowMode[mode]; |
| 424 |
| 425 if (this.shadow) { |
| 426 this.toggleClass('has-shadow', true, this.$.dropShadow); |
| 427 } else if (shadowMode === SHADOW_ALWAYS) { |
| 428 this.toggleClass('has-shadow', true, this.$.dropShadow); |
| 429 } else if (shadowMode === SHADOW_WHEN_SCROLLING && !atTop) { |
| 430 this.toggleClass('has-shadow', true, this.$.dropShadow); |
| 431 } else { |
| 432 this.toggleClass('has-shadow', false, this.$.dropShadow); |
| 433 } |
| 434 }, |
| 435 |
| 436 _computeMainContainerClass: function(mode) { |
| 437 // TODO: It will be useful to have a utility for classes |
| 438 // e.g. Polymer.Utils.classes({ foo: true }); |
| 439 |
| 440 var classes = {}; |
| 441 |
| 442 classes['flex'] = mode !== 'cover'; |
| 443 |
| 444 return Object.keys(classes).filter( |
| 445 function(className) { |
| 446 return classes[className]; |
| 447 }).join(' '); |
| 448 }, |
| 449 |
| 450 _addListener: function() { |
| 451 this.scroller.addEventListener('scroll', this.scrollHandler, false); |
| 452 }, |
| 453 |
| 454 _removeListener: function() { |
| 455 this.scroller.removeEventListener('scroll', this.scrollHandler); |
| 456 }, |
| 457 |
| 458 _modeChanged: function(newMode, oldMode) { |
| 459 var configs = MODE_CONFIGS; |
| 460 var header = this.header; |
| 461 var animateDuration = 200; |
| 462 |
| 463 if (header) { |
| 464 // in tallMode it may add tallClass to the header; so do the cleanup |
| 465 // when mode is changed from tallMode to not tallMode |
| 466 if (configs.tallMode[oldMode] && !configs.tallMode[newMode]) { |
| 467 header.classList.remove(this.tallClass); |
| 468 this.async(function() { |
| 469 header.classList.remove('animate'); |
| 470 }, animateDuration); |
| 471 } else { |
| 472 header.classList.toggle('animate', configs.tallMode[newMode]); |
| 473 } |
| 474 } |
| 475 this._keepScrollingState(); |
| 476 }, |
| 477 |
| 478 _keepScrollingState: function() { |
| 479 var main = this.scroller; |
| 480 var header = this.header; |
| 481 |
| 482 this._setAtTop(main.scrollTop === 0); |
| 483 |
| 484 if (header && this.tallClass && MODE_CONFIGS.tallMode[this.mode]) { |
| 485 this.toggleClass(this.tallClass, this.atTop || |
| 486 header.classList.contains(this.tallClass) && |
| 487 main.scrollHeight < this.offsetHeight, header); |
| 488 } |
| 489 }, |
| 490 |
| 491 _scroll: function() { |
| 492 this._keepScrollingState(); |
| 493 this.fire('content-scroll', {target: this.scroller}, {bubbles: false})
; |
| 494 }, |
| 495 |
| 496 _getScrollerForMode: function(mode) { |
| 497 return MODE_CONFIGS.outerScroll[mode] ? |
| 498 this : this.$.mainContainer; |
| 499 } |
| 500 }); |
| 501 })(); |
| 502 </script> |
| 503 </dom-module> |
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Chromium Code Reviews
Issue 1581713003:
[third_party] add polymer 1.2.3 (Closed)
Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master