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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 header panel: | |
| 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-slider { | |
| 92 --paper-header-panel-standard-container: { | |
| 93 border: 1px solid gray; | |
| 94 }; | |
| 95 | |
| 96 --paper-header-panel-cover-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 | |
| 109 @group Paper Elements | |
| 110 @element paper-header-panel | |
| 111 @demo demo/index.html | |
| 112 @hero hero.svg | |
| 113 --> | |
| 114 | |
| 115 <dom-module id="paper-header-panel"> | |
| 116 | |
| 117 <style> | |
| 118 :host { | |
| 119 @apply(--layout); | |
| 120 @apply(--layout-vertical); | |
| 121 | |
| 122 display: block; | |
| 123 position: relative; | |
| 124 height: 100%; | |
| 125 | |
| 126 /* Create a stack context, we will need it for the shadow*/ | |
| 127 z-index: 0; | |
| 128 } | |
| 129 | |
| 130 :root { | |
| 131 /** | |
| 132 * Default paper header panel shadow | |
| 133 */ | |
| 134 --paper-header-panel-shadow: { | |
| 135 height: 6px; | |
| 136 bottom: -6px; | |
| 137 box-shadow: inset 0px 5px 6px -3px rgba(0, 0, 0, 0.4); | |
| 138 }; | |
| 139 } | |
| 140 | |
| 141 #mainContainer { | |
| 142 @apply(--layout-flex); | |
| 143 | |
| 144 position: relative; | |
| 145 overflow-y: auto; | |
| 146 overflow-x: hidden; | |
| 147 -webkit-overflow-scrolling: touch; | |
| 148 flex-basis: 0.0001px; | |
| 149 } | |
| 150 | |
| 151 /* | |
| 152 * mode: scroll | |
| 153 */ | |
| 154 :host([mode=scroll]) #mainContainer { | |
| 155 @apply(--paper-header-panel-scroll-container); | |
| 156 overflow: visible; | |
| 157 } | |
| 158 | |
| 159 :host([mode=scroll]) { | |
| 160 overflow-y: auto; | |
| 161 overflow-x: hidden; | |
| 162 -webkit-overflow-scrolling: touch; | |
| 163 } | |
| 164 | |
| 165 /* | |
| 166 * mode: cover | |
| 167 */ | |
| 168 :host([mode=cover]) #mainContainer { | |
| 169 @apply(--paper-header-panel-cover-container); | |
| 170 position: absolute; | |
| 171 top: 0; | |
| 172 right: 0; | |
| 173 bottom: 0; | |
| 174 left: 0; | |
| 175 } | |
| 176 | |
| 177 /* | |
| 178 * mode: standard | |
| 179 */ | |
| 180 :host([mode=standard]) #mainContainer { | |
| 181 @apply(--paper-header-panel-standard-container); | |
| 182 } | |
| 183 | |
| 184 /* | |
| 185 * mode: waterfall | |
| 186 */ | |
| 187 :host([mode=waterfall]) #mainContainer { | |
| 188 @apply(--paper-header-panel-waterfall-container); | |
| 189 } | |
| 190 | |
| 191 /* | |
| 192 * mode: waterfall-tall | |
| 193 */ | |
| 194 :host([mode=waterfall-tall]) #mainContainer { | |
| 195 @apply(--paper-header-panel-waterfall-tall-container); | |
| 196 } | |
| 197 | |
| 198 :host ::content paper-toolbar, | |
| 199 :host ::content .paper-header { | |
| 200 position: relative; | |
| 201 overflow: visible !important; | |
| 202 } | |
| 203 | |
| 204 :host ::content paper-toolbar:after, | |
| 205 :host ::content .paper-header:after { | |
| 206 @apply(--paper-header-panel-shadow); | |
| 207 | |
| 208 -webkit-transition: opacity 0.5s, -webkit-transform 0.5s; | |
| 209 transition: opacity 0.5s, transform 0.5s; | |
| 210 | |
| 211 opacity: 0; | |
| 212 content: ""; | |
| 213 | |
| 214 width: 100%; | |
| 215 position: absolute; | |
| 216 left: 0px; | |
| 217 right: 0px; | |
| 218 z-index: 1; | |
| 219 | |
| 220 -webkit-transform: scale3d(1, 0, 1); | |
| 221 -webkit-transform-origin: 0% 0%; | |
| 222 | |
| 223 transform: scale3d(1, 0, 1); | |
| 224 transform-origin: 0% 0%; | |
| 225 } | |
| 226 | |
| 227 :host ::content paper-toolbar.has-shadow:after, | |
| 228 :host ::content .paper-header.has-shadow:after { | |
| 229 opacity: 1; | |
| 230 -webkit-transform: scale3d(1, 1, 1); | |
| 231 transform: scale3d(1, 1, 1); | |
| 232 } | |
| 233 </style> | |
| 234 | |
| 235 <template> | |
| 236 <content id="headerContent" select="paper-toolbar, .paper-header"></content> | |
| 237 <div id="mainContainer" class$="[[_computeMainContainerClass(mode)]]"> | |
| 238 <content id="mainContent" select="*"></content> | |
| 239 </div> | |
| 240 </template> | |
| 241 | |
| 242 </dom-module> | |
| 243 | |
| 244 <script> | |
| 245 | |
| 246 (function() { | |
| 247 | |
| 248 'use strict'; | |
| 249 | |
| 250 var SHADOW_WHEN_SCROLLING = 1; | |
| 251 var SHADOW_ALWAYS = 2; | |
| 252 | |
| 253 | |
| 254 var MODE_CONFIGS = { | |
| 255 | |
| 256 outerScroll: { | |
| 257 scroll: true | |
| 258 }, | |
| 259 | |
| 260 shadowMode: { | |
| 261 standard: SHADOW_ALWAYS, | |
| 262 waterfall: SHADOW_WHEN_SCROLLING, | |
| 263 'waterfall-tall': SHADOW_WHEN_SCROLLING | |
| 264 }, | |
| 265 | |
| 266 tallMode: { | |
| 267 'waterfall-tall': true | |
| 268 } | |
| 269 }; | |
| 270 | |
| 271 Polymer({ | |
| 272 | |
| 273 is: 'paper-header-panel', | |
| 274 | |
| 275 /** | |
| 276 * Fired when the content has been scrolled. `event.detail.target` return
s | |
| 277 * the scrollable element which you can use to access scroll info such as | |
| 278 * `scrollTop`. | |
| 279 * | |
| 280 * <paper-header-panel on-content-scroll="{{scrollHandler}}"> | |
| 281 * ... | |
| 282 * </paper-header-panel> | |
| 283 * | |
| 284 * | |
| 285 * scrollHandler: function(event) { | |
| 286 * var scroller = event.detail.target; | |
| 287 * console.log(scroller.scrollTop); | |
| 288 * } | |
| 289 * | |
| 290 * @event content-scroll | |
| 291 */ | |
| 292 | |
| 293 properties: { | |
| 294 | |
| 295 /** | |
| 296 * Controls header and scrolling behavior. Options are | |
| 297 * `standard`, `seamed`, `waterfall`, `waterfall-tall`, `scroll` and | |
| 298 * `cover`. Default is `standard`. | |
| 299 * | |
| 300 * `standard`: The header is a step above the panel. The header will con
sume the | |
| 301 * panel at the point of entry, preventing it from passing through to th
e | |
| 302 * opposite side. | |
| 303 * | |
| 304 * `seamed`: The header is presented as seamed with the panel. | |
| 305 * | |
| 306 * `waterfall`: Similar to standard mode, but header is initially presen
ted as | |
| 307 * seamed with panel, but then separates to form the step. | |
| 308 * | |
| 309 * `waterfall-tall`: The header is initially taller (`tall` class is add
ed to | |
| 310 * the header). As the user scrolls, the header separates (forming an e
dge) | |
| 311 * while condensing (`tall` class is removed from the header). | |
| 312 * | |
| 313 * `scroll`: The header keeps its seam with the panel, and is pushed off
screen. | |
| 314 * | |
| 315 * `cover`: The panel covers the whole `paper-header-panel` including th
e | |
| 316 * header. This allows user to style the panel in such a way that the pa
nel is | |
| 317 * partially covering the header. | |
| 318 * | |
| 319 * <paper-header-panel mode="cover"> | |
| 320 * <paper-toolbar class="tall"> | |
| 321 * <core-icon-button icon="menu"></core-icon-button> | |
| 322 * </paper-toolbar> | |
| 323 * <div class="content"></div> | |
| 324 * </paper-header-panel> | |
| 325 */ | |
| 326 mode: { | |
| 327 type: String, | |
| 328 value: 'standard', | |
| 329 observer: '_modeChanged', | |
| 330 reflectToAttribute: true | |
| 331 }, | |
| 332 | |
| 333 /** | |
| 334 * If true, the drop-shadow is always shown no matter what mode is set t
o. | |
| 335 */ | |
| 336 shadow: { | |
| 337 type: Boolean, | |
| 338 value: false | |
| 339 }, | |
| 340 | |
| 341 /** | |
| 342 * The class used in waterfall-tall mode. Change this if the header | |
| 343 * accepts a different class for toggling height, e.g. "medium-tall" | |
| 344 */ | |
| 345 tallClass: { | |
| 346 type: String, | |
| 347 value: 'tall' | |
| 348 }, | |
| 349 | |
| 350 /** | |
| 351 * If true, the scroller is at the top | |
| 352 */ | |
| 353 atTop: { | |
| 354 type: Boolean, | |
| 355 value: true, | |
| 356 readOnly: true | |
| 357 } | |
| 358 }, | |
| 359 | |
| 360 observers: [ | |
| 361 '_computeDropShadowHidden(atTop, mode, shadow)' | |
| 362 ], | |
| 363 | |
| 364 ready: function() { | |
| 365 this.scrollHandler = this._scroll.bind(this); | |
| 366 this._addListener(); | |
| 367 | |
| 368 // Run `scroll` logic once to initialze class names, etc. | |
| 369 this._keepScrollingState(); | |
| 370 }, | |
| 371 | |
| 372 detached: function() { | |
| 373 this._removeListener(); | |
| 374 }, | |
| 375 | |
| 376 /** | |
| 377 * Returns the header element | |
| 378 * | |
| 379 * @property header | |
| 380 * @type Object | |
| 381 */ | |
| 382 get header() { | |
| 383 return Polymer.dom(this.$.headerContent).getDistributedNodes()[0]; | |
| 384 }, | |
| 385 | |
| 386 /** | |
| 387 * Returns the scrollable element. | |
| 388 * | |
| 389 * @property scroller | |
| 390 * @type Object | |
| 391 */ | |
| 392 get scroller() { | |
| 393 return this._getScrollerForMode(this.mode); | |
| 394 }, | |
| 395 | |
| 396 /** | |
| 397 * Returns true if the scroller has a visible shadow. | |
| 398 * | |
| 399 * @property visibleShadow | |
| 400 * @type Boolean | |
| 401 */ | |
| 402 get visibleShadow() { | |
| 403 return this.header.classList.contains('has-shadow'); | |
| 404 }, | |
| 405 | |
| 406 _computeDropShadowHidden: function(atTop, mode, shadow) { | |
| 407 | |
| 408 var shadowMode = MODE_CONFIGS.shadowMode[mode]; | |
| 409 | |
| 410 if (this.shadow) { | |
| 411 this.toggleClass('has-shadow', true, this.header); | |
| 412 | |
| 413 } else if (shadowMode === SHADOW_ALWAYS) { | |
| 414 this.toggleClass('has-shadow', true, this.header); | |
| 415 | |
| 416 } else if (shadowMode === SHADOW_WHEN_SCROLLING && !atTop) { | |
| 417 this.toggleClass('has-shadow', true, this.header); | |
| 418 | |
| 419 } else { | |
| 420 this.toggleClass('has-shadow', false, this.header); | |
| 421 | |
| 422 } | |
| 423 }, | |
| 424 | |
| 425 _computeMainContainerClass: function(mode) { | |
| 426 // TODO: It will be useful to have a utility for classes | |
| 427 // e.g. Polymer.Utils.classes({ foo: true }); | |
| 428 | |
| 429 var classes = {}; | |
| 430 | |
| 431 classes['flex'] = mode !== 'cover'; | |
| 432 | |
| 433 return Object.keys(classes).filter( | |
| 434 function(className) { | |
| 435 return classes[className]; | |
| 436 }).join(' '); | |
| 437 }, | |
| 438 | |
| 439 _addListener: function() { | |
| 440 this.scroller.addEventListener('scroll', this.scrollHandler, false); | |
| 441 }, | |
| 442 | |
| 443 _removeListener: function() { | |
| 444 this.scroller.removeEventListener('scroll', this.scrollHandler); | |
| 445 }, | |
| 446 | |
| 447 _modeChanged: function(newMode, oldMode) { | |
| 448 var configs = MODE_CONFIGS; | |
| 449 var header = this.header; | |
| 450 var animateDuration = 200; | |
| 451 | |
| 452 if (header) { | |
| 453 // in tallMode it may add tallClass to the header; so do the cleanup | |
| 454 // when mode is changed from tallMode to not tallMode | |
| 455 if (configs.tallMode[oldMode] && !configs.tallMode[newMode]) { | |
| 456 header.classList.remove(this.tallClass); | |
| 457 this.async(function() { | |
| 458 header.classList.remove('animate'); | |
| 459 }, animateDuration); | |
| 460 } else { | |
| 461 header.classList.toggle('animate', configs.tallMode[newMode]); | |
| 462 } | |
| 463 } | |
| 464 this._keepScrollingState(); | |
| 465 }, | |
| 466 | |
| 467 _keepScrollingState: function () { | |
| 468 var main = this.scroller; | |
| 469 var header = this.header; | |
| 470 | |
| 471 this._setAtTop(main.scrollTop === 0); | |
| 472 | |
| 473 if (header && MODE_CONFIGS.tallMode[this.mode]) { | |
| 474 this.toggleClass(this.tallClass, this.atTop || | |
| 475 header.classList.contains(this.tallClass) && | |
| 476 main.scrollHeight < this.offsetHeight, header); | |
| 477 } | |
| 478 }, | |
| 479 | |
| 480 _scroll: function(e) { | |
| 481 this._keepScrollingState(); | |
| 482 this.fire('content-scroll', {target: this.scroller}, {bubbles: false}); | |
| 483 }, | |
| 484 | |
| 485 _getScrollerForMode: function(mode) { | |
| 486 return MODE_CONFIGS.outerScroll[mode] ? | |
| 487 this : this.$.mainContainer; | |
| 488 } | |
| 489 | |
| 490 }); | |
| 491 | |
| 492 })(); | |
| 493 | |
| 494 </script> | |
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Chromium Code Reviews
Issue 1269803005:
Remove third_party/polymer from .gitignore (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master