| OLD | NEW |
|---|
| (Empty) |
| 1 <!-- | |
| 2 @license | |
| 3 Copyright (c) 2014 The Polymer Project Authors. All rights reserved. | |
| 4 This code may only be used under the BSD style license found at http://polymer.g
ithub.io/LICENSE.txt | |
| 5 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt | |
| 6 The complete set of contributors may be found at http://polymer.github.io/CONTRI
BUTORS.txt | |
| 7 Code distributed by Google as part of the polymer project is also | |
| 8 subject to an additional IP rights grant found at http://polymer.github.io/PATEN
TS.txt | |
| 9 --> | |
| 10 <link rel="import" href="style-util.html"> | |
| 11 <link rel="import" href="style-transformer.html"> | |
| 12 <link rel="import" href="style-defaults.html"> | |
| 13 | |
| 14 <!-- | |
| 15 | |
| 16 The `x-style` extension of the native `<style>` element allows defining styles | |
| 17 in the main document that can take advantage of several special features of | |
| 18 Polymer's styling system: | |
| 19 | |
| 20 * Document styles defined in an `x-style` will be shimmed to ensure they do | |
| 21 not leak into local DOM when running on browsers without non-native Shadow DOM. | |
| 22 * Shadow DOM-specific `/deep/` and `::shadow` combinators will be shimmed on | |
| 23 browsers without non-native Shadow DOM. | |
| 24 * Custom properties used by Polymer's experimental shim for cross-scope styling | |
| 25 may be defined in an `x-style`. | |
| 26 | |
| 27 Example: | |
| 28 | |
| 29 ```html | |
| 30 <!doctype html> | |
| 31 <html> | |
| 32 <head> | |
| 33 <script src="components/webcomponentsjs/webcomponents-lite.js"></script> | |
| 34 <link rel="import" href="components/polymer/polymer.html"> | |
| 35 | |
| 36 <style is="x-style"> | |
| 37 | |
| 38 /* Will be prevented from affecting local DOM of Polymer elements */ | |
| 39 * { | |
| 40 box-sizing: border-box; | |
| 41 } | |
| 42 | |
| 43 /* Can use /deep/ and ::shadow combinators */ | |
| 44 body /deep/ .my-special-view::shadow #thing-inside { | |
| 45 background: yellow; | |
| 46 } | |
| 47 | |
| 48 /* Custom properties that inherit down the document tree may be defined */ | |
| 49 body { | |
| 50 --my-toolbar-title-color: green; | |
| 51 } | |
| 52 | |
| 53 </style> | |
| 54 | |
| 55 </head> | |
| 56 <body> | |
| 57 | |
| 58 ... | |
| 59 | |
| 60 </body> | |
| 61 </html> | |
| 62 ``` | |
| 63 | |
| 64 Note, all features of `x-style` are available when defining styles as part of Po
lymer elements (e.g. `<style>` elements within `<dom-module>`'s used for definin
g Polymer elements. The `x-style` extension should only be used for defining doc
ument styles, outside of a custom element's local DOM. | |
| 65 | |
| 66 --> | |
| 67 | |
| 68 <script> | |
| 69 (function() { | |
| 70 | |
| 71 Polymer({ | |
| 72 | |
| 73 is: 'x-style', | |
| 74 extends: 'style', | |
| 75 | |
| 76 created: function() { | |
| 77 var rules = Polymer.StyleUtil.parser.parse(this.textContent); | |
| 78 this.applyProperties(rules); | |
| 79 // TODO(sorvell): since custom rules must match directly, they tend to be | |
| 80 // made with selectors like `*`. | |
| 81 // We *remove them here* so they don't apply too widely and nerf recalc. | |
| 82 // This means that normal properties mixe in rules with custom | |
| 83 // properties will *not* apply. | |
| 84 var cssText = Polymer.StyleUtil.parser.stringify(rules); | |
| 85 this.textContent = this.scopeCssText(cssText); | |
| 86 }, | |
| 87 | |
| 88 scopeCssText: function(cssText) { | |
| 89 return Polymer.Settings.useNativeShadow ? | |
| 90 cssText : | |
| 91 Polymer.StyleUtil.toCssText(cssText, function(rule) { | |
| 92 Polymer.StyleTransformer.rootRule(rule); | |
| 93 }); | |
| 94 }, | |
| 95 | |
| 96 applyProperties: function(rules) { | |
| 97 var cssText = ''; | |
| 98 Polymer.StyleUtil.forEachStyleRule(rules, function(rule) { | |
| 99 if (rule.cssText.match(CUSTOM_RULE)) { | |
| 100 // TODO(sorvell): use parser.stringify, it needs an option not to | |
| 101 // strip custom properties. | |
| 102 cssText += rule.selector + ' {\n' + rule.cssText + '\n}\n'; | |
| 103 } | |
| 104 }); | |
| 105 if (cssText) { | |
| 106 Polymer.StyleDefaults.applyCss(cssText); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 }); | |
| 111 | |
| 112 var CUSTOM_RULE = /--[^;{'"]*\:/; | |
| 113 | |
| 114 })(); | |
| 115 </script> | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1162563004:
Upgrade to 1.0 and switch clients to dom-repeat where needed. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master