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| 1 <!-- | |
| 2 Copyright (c) 2014 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 <!-- | |
| 11 `<core-layout-trbl>` arranges nodes horizontally via absolute positioning. | |
| 12 Set the `vertical` attribute (boolean) to arrange vertically instead. | |
| 13 | |
| 14 `<core-layout-trbl>` arranges it's <b>sibling elements</b>, not | |
| 15 it's children. | |
| 16 | |
| 17 One arranged node may be marked as elastic by giving it a `flex` | |
| 18 attribute (boolean). | |
| 19 | |
| 20 You may remove a node from layout by giving it a `nolayout` | |
| 21 attribute (boolean). | |
| 22 | |
| 23 CSS Notes: | |
| 24 | |
| 25 `padding` is ignored on the parent node. | |
| 26 `margin` is ignored on arranged nodes. | |
| 27 `min-width` is ignored on arranged nodes, use `min-width` on the parent node | |
| 28 instead. | |
| 29 | |
| 30 Example: | |
| 31 | |
| 32 Arrange three `div` into columns. `flex` attribute on Column Two makes that | |
| 33 column elastic. | |
| 34 | |
| 35 <core-layout-trbl></core-layout-trbl> | |
| 36 <div>Column One</div> | |
| 37 <div flex>Column Two</div> | |
| 38 <div>Column Three</div> | |
| 39 | |
| 40 Remember that `<core-layout-trbl>` arranges it's sibling elements, not it's chil
dren. | |
| 41 | |
| 42 If body has width 52 device pixels (in this case, ascii characters), call that 5
2px. | |
| 43 Column One has it's natural width of 12px (including border), Column Three has i
t's | |
| 44 natural width of 14px, body border uses 2px, and Column Two automatically uses t
he | |
| 45 remaining space: 24px. | |
| 46 | |
| 47 |- 52px -| | |
| 48 ---------------------------------------------------- | |
| 49 ||Column One|| Column Two ||Column Three|| | |
| 50 ---------------------------------------------------- | |
| 51 |- 12px -||- (24px) -|| 14px -| | |
| 52 | |
| 53 As the parent node resizes, the elastic column reacts via CSS to adjust it's siz
e. | |
| 54 No javascript is used during parent resizing, for best performance. | |
| 55 | |
| 56 Changes in content or sibling size are not handled automatically. | |
| 57 | |
| 58 ---------------------------------------------------------------- | |
| 59 ||Column One| Column Two |Column Three|| | |
| 60 ---------------------------------------------------------------- | |
| 61 | |
| 62 -------------------------------------- | |
| 63 ||Column One|Column Two|Column Three|| | |
| 64 -------------------------------------- | |
| 65 | |
| 66 Arrange in rows by adding the `vertical` attribute. | |
| 67 | |
| 68 Example: | |
| 69 | |
| 70 <core-layout-trbl vertical></core-layout-trbl> | |
| 71 <div>Row One</div> | |
| 72 <div flex>Row Two</div> | |
| 73 <div>Row Three</div> | |
| 74 | |
| 75 This setup will cause Row Two to stretch to fill the container. | |
| 76 | |
| 77 ----------- ----------- | |
| 78 |---------| |---------| | |
| 79 | | | | | |
| 80 |Row One | |Row One | | |
| 81 | | | | | |
| 82 |---------| |---------| | |
| 83 | | | | | |
| 84 |Row Two | |Row Two | | |
| 85 | | | | | |
| 86 |---------| | | | |
| 87 | | | | | |
| 88 |Row Three| | | | |
| 89 | | |---------| | |
| 90 |---------| | | | |
| 91 ----------- |Row Three| | |
| 92 | | | |
| 93 |---------| | |
| 94 |---------| | |
| 95 | |
| 96 Layouts can be nested arbitrarily. | |
| 97 | |
| 98 <core-layout-trbl></core-layout-trbl> | |
| 99 <div>Menu</div> | |
| 100 <div flex> | |
| 101 <core-layout-trbl vertical></core-layout-trbl> | |
| 102 <div>Title</div> | |
| 103 <div>Toolbar</div> | |
| 104 <div flex>Main</div> | |
| 105 <div>Footer</div> | |
| 106 </div> | |
| 107 | |
| 108 Renders something like this | |
| 109 | |
| 110 -------------------------------- | |
| 111 ||Menu ||Title || | |
| 112 || ||-----------------|| | |
| 113 || ||Toolbar || | |
| 114 || ||-----------------|| | |
| 115 || ||Main || | |
| 116 || || || | |
| 117 || ||-----------------|| | |
| 118 || ||Footer || | |
| 119 -------------------------------- | |
| 120 | |
| 121 @group Polymer Core Elements | |
| 122 @element core-layout-trbl | |
| 123 --> | |
| 124 <link rel="import" href="../polymer/polymer.html"> | |
| 125 | |
| 126 <polymer-element name="core-layout-trbl" attributes="vertical"> | |
| 127 | |
| 128 <template> | |
| 129 | |
| 130 <style> | |
| 131 :host { | |
| 132 display: none; | |
| 133 } | |
| 134 </style> | |
| 135 | |
| 136 </template> | |
| 137 | |
| 138 <script> | |
| 139 | |
| 140 Polymer('core-layout-trbl', { | |
| 141 | |
| 142 vertical: false, | |
| 143 | |
| 144 ready: function() { | |
| 145 this.setAttribute('nolayout', ''); | |
| 146 }, | |
| 147 | |
| 148 attached: function() { | |
| 149 this.asyncMethod(function() { | |
| 150 this.prepare(); | |
| 151 this.layout(); | |
| 152 }); | |
| 153 }, | |
| 154 | |
| 155 prepare: function() { | |
| 156 var parent = this.parentNode.host || this.parentNode; | |
| 157 // explicit position harmful on <body> | |
| 158 if (parent.localName !== 'body') { | |
| 159 // may recalc | |
| 160 var cs = window.getComputedStyle(parent); | |
| 161 if (cs.position === 'static') { | |
| 162 parent.style.position = 'relative'; | |
| 163 } | |
| 164 //parent.style.overflow = 'hidden'; | |
| 165 } | |
| 166 // changes will cause another recalc at next validation step | |
| 167 var stylize = this.stylize, vertical; | |
| 168 this.parentNode.childNodes.array().forEach(function(c, i) { | |
| 169 if (c.nodeType === Node.ELEMENT_NODE && !c.hasAttribute('nolayout')) { | |
| 170 stylize(c, { | |
| 171 position: 'absolute', | |
| 172 boxSizing: 'border-box', | |
| 173 MozBoxSizing: 'border-box', | |
| 174 }); | |
| 175 // test for auto-vertical | |
| 176 if (vertical === undefined) { | |
| 177 vertical = (c.offsetWidth == 0 && c.offsetHeight !== 0); | |
| 178 } | |
| 179 } | |
| 180 }); | |
| 181 this.vertical = this.vertical || vertical; | |
| 182 }, | |
| 183 | |
| 184 /** | |
| 185 * Arrange sibling nodes end-to-end in one dimension. | |
| 186 * | |
| 187 * Arrangement is horizontal unless the `vertical` | |
| 188 * attribute is applied on this node. | |
| 189 * | |
| 190 * @method layout | |
| 191 */ | |
| 192 layout: function() { | |
| 193 var parent = this.parentNode.host || this.parentNode; | |
| 194 var vertical = this.vertical; | |
| 195 var ww = 0, hh = 0, pre = [], fit, post = []; | |
| 196 var list = pre; | |
| 197 // gather element information (at most one recalc) | |
| 198 this.parentNode.childNodes.array().forEach(function(c, i) { | |
| 199 if (c.nodeType===Node.ELEMENT_NODE && !c.hasAttribute('nolayout')) { | |
| 200 var info = { | |
| 201 element: c, | |
| 202 w: c.offsetWidth, | |
| 203 h: c.offsetHeight | |
| 204 }; | |
| 205 if (!c.hasAttribute('fit') && !c.hasAttribute('flex')) { | |
| 206 ww += c.offsetWidth; | |
| 207 hh += c.offsetHeight; | |
| 208 list.push(info); | |
| 209 } else { | |
| 210 fit = c; | |
| 211 list = post; | |
| 212 ww = hh = 0; | |
| 213 } | |
| 214 } | |
| 215 }); | |
| 216 // update layout styles (invalidate, no recalc) | |
| 217 var v = 0; | |
| 218 var mxp = 0, myp = 0; | |
| 219 var stylize = this.stylize; | |
| 220 pre.forEach(function(info) { | |
| 221 if (vertical) { | |
| 222 stylize(info.element, { | |
| 223 top: v + 'px', right: mxp, height: info.h + 'px', left: mxp | |
| 224 }); | |
| 225 } else { | |
| 226 stylize(info.element, { | |
| 227 top: myp, width: info.w + 'px', bottom: myp, left: v + 'px' | |
| 228 }); | |
| 229 } | |
| 230 v += vertical ? info.h : info.w; | |
| 231 }); | |
| 232 if (fit) { | |
| 233 if (vertical) { | |
| 234 stylize(fit, { | |
| 235 top: v + 'px', right: mxp, bottom: hh + 'px', left: mxp | |
| 236 }); | |
| 237 } else { | |
| 238 stylize(fit, { | |
| 239 top: myp, right: ww + 'px', bottom: myp, left: v + 'px' | |
| 240 }); | |
| 241 } | |
| 242 v = vertical ? hh : ww; | |
| 243 post.forEach(function(info) { | |
| 244 v -= vertical ? info.h : info.w; | |
| 245 if (vertical) { | |
| 246 stylize(info.element, { | |
| 247 height: info.h + 'px', right: mxp, bottom: v + 'px', left: mxp | |
| 248 }); | |
| 249 } else { | |
| 250 stylize(info.element, { | |
| 251 top: myp, right: v + 'px', bottom: myp, width: info.w + 'px' | |
| 252 }); | |
| 253 } | |
| 254 }); | |
| 255 } | |
| 256 }, | |
| 257 | |
| 258 stylize: function(element, styles) { | |
| 259 var style = element.style; | |
| 260 Object.keys(styles).forEach(function(k){ | |
| 261 style[k] = styles[k]; | |
| 262 }); | |
| 263 } | |
| 264 | |
| 265 }); | |
| 266 | |
| 267 </script> | |
| 268 | |
| 269 </polymer-element> | |
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Chromium Code Reviews
Issue 786953007:
npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions (Closed)
Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master