├── .npmignore
├── .gitignore
├── index.d.ts
├── .eslintrc.js
├── src
    ├── index.js
    └── sticky.js
├── rollup.config.js
├── examples
    └── basic
    │   ├── app.js
    │   └── index.html
├── .prettierrc
├── package.json
├── LICENSE
└── README.md


/.npmignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | node_modules


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | node_modules
3 | *.log
4 | vue-sticky-directive.js
5 | package-lock.json


--------------------------------------------------------------------------------
/index.d.ts:
--------------------------------------------------------------------------------
1 | import { DirectiveOptions, PluginObject } from 'vue';
2 | declare const Sticky: DirectiveOptions & PluginObject<never>;
3 | export default Sticky;
4 | 


--------------------------------------------------------------------------------
/.eslintrc.js:
--------------------------------------------------------------------------------
 1 | module.exports = {
 2 |   root: true,
 3 |   parser: 'babel-eslint',
 4 |   extends: 'standard',
 5 |   env: {
 6 |     browser: true
 7 |   },
 8 |   globals: {
 9 |     Vue: true
10 |   }
11 | }


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import Sticky from './sticky';
 2 | 
 3 | const install = function(Vue) {
 4 |   Vue.directive('Sticky', Sticky);
 5 | };
 6 | 
 7 | if (window.Vue) {
 8 |   Vue.use(install);
 9 | }
10 | 
11 | Sticky.install = install;
12 | 
13 | export default Sticky;
14 | 


--------------------------------------------------------------------------------
/rollup.config.js:
--------------------------------------------------------------------------------
 1 | import babel from 'rollup-plugin-babel'
 2 | 
 3 | export default {
 4 |   entry: './src/index.js',
 5 |   dest: 'vue-sticky-directive.js',
 6 |   plugins: [
 7 |     babel({
 8 |       exclude: 'node_modules/**',
 9 |       presets: ['es2015-rollup']
10 |     })
11 |   ],
12 |   format: 'umd',
13 |   moduleName: 'VueStickyDirective'
14 | }
15 | 


--------------------------------------------------------------------------------
/examples/basic/app.js:
--------------------------------------------------------------------------------
 1 | /* eslint-disable */
 2 | import Sticky from '../../src/sticky.js';
 3 | 
 4 | Vue.directive('Sticky', Sticky);
 5 | 
 6 | new Vue({
 7 |   el: document.querySelector('.app'),
 8 |   template: '#app-template',
 9 |   data: {
10 |     stickyEnabled: true,
11 |   },
12 |   methods: {
13 |     onStick(data) {
14 |       console.log(data);
15 |     },
16 |   },
17 | });
18 | 


--------------------------------------------------------------------------------
/.prettierrc:
--------------------------------------------------------------------------------
 1 | {
 2 |   "arrowParens": "avoid",
 3 |   "bracketSpacing": true,
 4 |   "htmlWhitespaceSensitivity": "css",
 5 |   "insertPragma": false,
 6 |   "jsxBracketSameLine": false,
 7 |   "jsxSingleQuote": false,
 8 |   "printWidth": 80,
 9 |   "proseWrap": "preserve",
10 |   "requirePragma": false,
11 |   "semi": true,
12 |   "singleQuote": true,
13 |   "tabWidth": 2,
14 |   "trailingComma": "all",
15 |   "useTabs": false
16 | }
17 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "vue-sticky-directive",
 3 |   "version": "0.0.10",
 4 |   "description": "A powerful vue directive make element sticky.",
 5 |   "main": "vue-sticky-directive.js",
 6 |   "module": "./src/index.js",
 7 |   "typings": "./index.d.ts",
 8 |   "directories": {
 9 |     "example": "example"
10 |   },
11 |   "repository": {
12 |     "type": "git",
13 |     "url": "https://github.com/mehwww/vue-sticky-directive.git"
14 |   },
15 |   "scripts": {
16 |     "build": "rollup -c",
17 |     "prepublish": "npm run build"
18 |   },
19 |   "keywords": [
20 |     "vue",
21 |     "sticky"
22 |   ],
23 |   "author": "meh",
24 |   "license": "MIT",
25 |   "devDependencies": {
26 |     "babel-core": "^6.25.0",
27 |     "babel-eslint": "^7.2.3",
28 |     "babel-preset-es2015-rollup": "^3.0.0",
29 |     "eslint": "^4.4.1",
30 |     "eslint-config-standard": "^10.2.1",
31 |     "eslint-plugin-import": "^2.7.0",
32 |     "eslint-plugin-node": "^5.1.1",
33 |     "eslint-plugin-promise": "^3.5.0",
34 |     "eslint-plugin-standard": "^3.0.1",
35 |     "rollup": "^0.47.4",
36 |     "rollup-plugin-babel": "^3.0.2"
37 |   }
38 | }
39 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2017-present Meh
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in
13 | all copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 | THE SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # vue-sticky-directive
 2 | 
 3 | vue-sticky-directive is a powerful vue directive make element sticky.
 4 | 
 5 | # Install
 6 | 
 7 | ```Bash
 8 | npm install vue-sticky-directive --save
 9 | ```
10 | 
11 | ES2015
12 | ```JavaScript
13 | // register globally
14 | import Sticky from 'vue-sticky-directive'
15 | Vue.use(Sticky)
16 | 
17 | // or for a single instance
18 | import Sticky from 'vue-sticky-directive'
19 | new Vue({
20 |   directives: {Sticky}
21 | })
22 | ```
23 | 
24 | # Usage
25 | 
26 | Use `v-sticky` directive to enable element postion sticky, and use `sticky-*` attributes to define its options. Sticky element will find its nearest element with `sticky-container` attribute or its parent node if faild as the releative element.
27 | 
28 | [basic example](https://mehwww.github.io/vue-sticky-directive/examples/basic/)
29 | 
30 | ```HTML
31 | <div sticky-container>
32 |   <div v-sticky sticky-offset="offset" sticky-side="top">
33 |     ...
34 |   </div>
35 | </div>
36 | ```
37 | 
38 | # Options
39 | * `sticky-offset` - set sticky offset, it support a vm variable name or a js expression like `{top: 10, bottom: 20}`
40 |   * `top`_(number)_ - set the top breakpoint (default: `0`)
41 |   * `bottom`_(number)_ - set the bottom breakpoint (default: `0`)
42 | * `sticky-side`_(string)_ - decide which side should be sticky, you can set `top`、`bottom` or `both` (default: `top`)
43 | * `sticky-z-index` _(number)_ - to set the z-index of element to stick
44 | * `on-stick` _(function)_ - callback when sticky and release, receiveing 1 argument with object indicating the state, like:
45 | 
46 | ```javascript
47 | // The element is sticked on top
48 | {
49 |   bottom: false,
50 |   top: true,
51 |   sticked: true
52 | }
53 | ```
54 | 
55 | An expression that evaluates to false set on `v-sticky` can be used to disable stickiness condtionally.
56 | 
57 | ```HTML
58 | <div sticky-container>
59 |   <div v-sticky="shouldStick">
60 |     ...
61 |   </div>
62 | </div>
63 | ```
64 | ```JavaScript
65 | export defaults {
66 |   data () {
67 |     shouldStick: false
68 |   }
69 | }
70 | ```
71 | 
72 | # License
73 | 
74 | MIT
75 | 
76 | 
77 | 


--------------------------------------------------------------------------------
/examples/basic/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | <head>
 4 |   <meta charset="UTF-8">
 5 |   <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 |   <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7 |   <title>Basic</title>
 8 |   <style>
 9 |     h2 {
10 |       margin: auto;
11 |       font-size: 40px;
12 |     }
13 | 
14 |     .app {
15 |       height: 2000px;
16 |       margin: 0 30px;
17 |     }
18 | 
19 |     .header {
20 |       display: flex;
21 |       height: 600px;
22 |       background: #eee;
23 |     }
24 | 
25 |     .footer {
26 |       display: flex;
27 |       height: 1200px;
28 |       background: #eee;
29 |     }
30 | 
31 |     .sticky-container {
32 |       /* height: 600px; */
33 |       overflow: hidden;
34 |       background: #ccc;
35 |     }
36 | 
37 |     .sticky-container p {
38 |       font-size: 20px;
39 |       margin: 20px;
40 |     }
41 | 
42 |     .sticky {
43 |       background: #bbb;
44 |       display: flex;
45 |     }
46 | 
47 |     .toggle-sticky {
48 |       z-index: 20;
49 |     }
50 |   </style>
51 | </head>
52 | <body>
53 |   <div class="app"></div>
54 |   <script type="text/x-template" id="app-template">
55 |     <div class="app">
56 |       <div class="header">
57 |         <h2>Header</h2>
58 |       </div>
59 |       <div class="sticky-container" sticky-container>
60 |         <div :style="{background: '#eee', margin: '20px'}">
61 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
62 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
63 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
64 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
65 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
66 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
67 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
68 |           <p>Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. Text before sticky element. </p>
69 |           <div class="sticky" v-sticky="stickyEnabled" sticky-offset="{top: 10, bottom: 30}" sticky-side="both" on-stick="onStick" sticky-z-index="20">
70 |             <h2>
71 |               <span>{{stickyEnabled ? 'Sticky' : 'Not sticky'}}</span>
72 |               <button class="toggle-sticky" @click="stickyEnabled = !stickyEnabled">toggle sticky</button>
73 |             </h2>
74 |           </div>
75 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
76 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
77 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
78 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
79 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
80 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
81 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
82 |           <p>Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. Text follow sticky element. </p>
83 |         </div>
84 |       </div>
85 |       <div class="footer">
86 |         <h2>Footer</h2>
87 |       </div>
88 |     </div>
89 |   </script>
90 |   <script src="https://unpkg.com/vue@2.4.2"></script>
91 |   <script type="module" src="./app.js"></script>
92 |   <script nomodule>
93 |     document.querySelector('.app').innerHTML = `
94 |     <p>Opps, it seems your browser does not support ES modules, <br/>
95 |     please follow <a href='https://github.com/paulirish/es-modules-todomvc/blob/master/readme.md'>this</a> to get example worked.</p>
96 |     `
97 |   </script>
98 | </body>
99 | </html>


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/src/sticky.js:
--------------------------------------------------------------------------------
  1 | const namespace = '@@vue-sticky-directive';
  2 | const events = [
  3 |   'resize',
  4 |   'scroll',
  5 |   'touchstart',
  6 |   'touchmove',
  7 |   'touchend',
  8 |   'pageshow',
  9 |   'load',
 10 | ];
 11 | 
 12 | const batchStyle = (el, style = {}, className = {}) => {
 13 |   for (let k in style) {
 14 |     el.style[k] = style[k];
 15 |   }
 16 |   for (let k in className) {
 17 |     if (className[k] && !el.classList.contains(k)) {
 18 |       el.classList.add(k);
 19 |     } else if (!className[k] && el.classList.contains(k)) {
 20 |       el.classList.remove(k);
 21 |     }
 22 |   }
 23 | };
 24 | 
 25 | class Sticky {
 26 |   constructor(el, vm) {
 27 |     this.el = el;
 28 |     this.vm = vm;
 29 |     this.unsubscribers = [];
 30 |     this.isPending = false;
 31 |     this.state = {
 32 |       isTopSticky: null,
 33 |       isBottomSticky: null,
 34 |       height: null,
 35 |       width: null,
 36 |       xOffset: null,
 37 |     };
 38 | 
 39 |     this.lastState = {
 40 |       top: null,
 41 |       bottom: null,
 42 |       sticked: false,
 43 |     };
 44 | 
 45 |     const offset = this.getAttribute('sticky-offset') || {};
 46 |     const side = this.getAttribute('sticky-side') || 'top';
 47 |     const zIndex = this.getAttribute('sticky-z-index') || '10';
 48 |     const onStick = this.getAttribute('on-stick') || null;
 49 | 
 50 |     this.options = {
 51 |       topOffset: Number(offset.top) || 0,
 52 |       bottomOffset: Number(offset.bottom) || 0,
 53 |       shouldTopSticky: side === 'top' || side === 'both',
 54 |       shouldBottomSticky: side === 'bottom' || side === 'both',
 55 |       zIndex: zIndex,
 56 |       onStick: onStick,
 57 |     };
 58 |   }
 59 | 
 60 |   doBind() {
 61 |     if (this.unsubscribers.length > 0) {
 62 |       return;
 63 |     }
 64 |     const { el, vm } = this;
 65 |     vm.$nextTick(() => {
 66 |       this.placeholderEl = document.createElement('div');
 67 |       this.containerEl = this.getContainerEl();
 68 |       el.parentNode.insertBefore(this.placeholderEl, el);
 69 |       events.forEach(event => {
 70 |         const fn = this.update.bind(this);
 71 |         this.unsubscribers.push(() => window.removeEventListener(event, fn));
 72 |         this.unsubscribers.push(() =>
 73 |           this.containerEl.removeEventListener(event, fn),
 74 |         );
 75 |         window.addEventListener(event, fn, { passive: true });
 76 |         this.containerEl.addEventListener(event, fn, { passive: true });
 77 |       });
 78 |     });
 79 |   }
 80 | 
 81 |   doUnbind() {
 82 |     this.unsubscribers.forEach(fn => fn());
 83 |     this.unsubscribers = [];
 84 |     this.resetElement();
 85 |   }
 86 | 
 87 |   update() {
 88 |     if (!this.isPending) {
 89 |       requestAnimationFrame(() => {
 90 |         this.isPending = false;
 91 |         this.recomputeState();
 92 |         this.updateElements();
 93 |       });
 94 |       this.isPending = true;
 95 |     }
 96 |   }
 97 | 
 98 |   isTopSticky() {
 99 |     if (!this.options.shouldTopSticky) return false;
100 |     const fromTop = this.state.placeholderElRect.top;
101 |     const fromBottom = this.state.containerElRect.bottom;
102 | 
103 |     const topBreakpoint = this.options.topOffset;
104 |     const bottomBreakpoint = this.options.bottomOffset;
105 | 
106 |     return fromTop <= topBreakpoint && fromBottom >= bottomBreakpoint;
107 |   }
108 | 
109 |   isBottomSticky() {
110 |     if (!this.options.shouldBottomSticky) return false;
111 |     const fromBottom =
112 |       window.innerHeight - this.state.placeholderElRect.top - this.state.height;
113 |     const fromTop = window.innerHeight - this.state.containerElRect.top;
114 | 
115 |     const topBreakpoint = this.options.topOffset;
116 |     const bottomBreakpoint = this.options.bottomOffset;
117 | 
118 |     return fromBottom <= bottomBreakpoint && fromTop >= topBreakpoint;
119 |   }
120 | 
121 |   recomputeState() {
122 |     this.state = Object.assign({}, this.state, {
123 |       height: this.getHeight(),
124 |       width: this.getWidth(),
125 |       xOffset: this.getXOffset(),
126 |       placeholderElRect: this.getPlaceholderElRect(),
127 |       containerElRect: this.getContainerElRect(),
128 |     });
129 |     this.state.isTopSticky = this.isTopSticky();
130 |     this.state.isBottomSticky = this.isBottomSticky();
131 |   }
132 | 
133 |   fireEvents() {
134 |     if (
135 |       typeof this.options.onStick === 'function' &&
136 |       (this.lastState.top !== this.state.isTopSticky ||
137 |         this.lastState.bottom !== this.state.isBottomSticky ||
138 |         this.lastState.sticked !==
139 |           (this.state.isTopSticky || this.state.isBottomSticky))
140 |     ) {
141 |       this.lastState = {
142 |         top: this.state.isTopSticky,
143 |         bottom: this.state.isBottomSticky,
144 |         sticked: this.state.isBottomSticky || this.state.isTopSticky,
145 |       };
146 |       this.options.onStick(this.lastState);
147 |     }
148 |   }
149 | 
150 |   updateElements() {
151 |     const placeholderStyle = { paddingTop: 0 };
152 |     const elStyle = {
153 |       position: 'static',
154 |       top: 'auto',
155 |       bottom: 'auto',
156 |       left: 'auto',
157 |       width: 'auto',
158 |       zIndex: this.options.zIndex,
159 |     };
160 |     const placeholderClassName = { 'vue-sticky-placeholder': true };
161 |     const elClassName = {
162 |       'vue-sticky-el': true,
163 |       'top-sticky': false,
164 |       'bottom-sticky': false,
165 |     };
166 | 
167 |     if (this.state.isTopSticky) {
168 |       elStyle.position = 'fixed';
169 |       elStyle.top = this.options.topOffset + 'px';
170 |       elStyle.left = this.state.xOffset + 'px';
171 |       elStyle.width = this.state.width + 'px';
172 |       const bottomLimit =
173 |         this.state.containerElRect.bottom -
174 |         this.state.height -
175 |         this.options.bottomOffset -
176 |         this.options.topOffset;
177 |       if (bottomLimit < 0) {
178 |         elStyle.top = bottomLimit + this.options.topOffset + 'px';
179 |       }
180 |       placeholderStyle.paddingTop = this.state.height + 'px';
181 |       elClassName['top-sticky'] = true;
182 |     } else if (this.state.isBottomSticky) {
183 |       elStyle.position = 'fixed';
184 |       elStyle.bottom = this.options.bottomOffset + 'px';
185 |       elStyle.left = this.state.xOffset + 'px';
186 |       elStyle.width = this.state.width + 'px';
187 |       const topLimit =
188 |         window.innerHeight -
189 |         this.state.containerElRect.top -
190 |         this.state.height -
191 |         this.options.bottomOffset -
192 |         this.options.topOffset;
193 |       if (topLimit < 0) {
194 |         elStyle.bottom = topLimit + this.options.bottomOffset + 'px';
195 |       }
196 |       placeholderStyle.paddingTop = this.state.height + 'px';
197 |       elClassName['bottom-sticky'] = true;
198 |     } else {
199 |       placeholderStyle.paddingTop = 0;
200 |     }
201 | 
202 |     batchStyle(this.el, elStyle, elClassName);
203 |     batchStyle(this.placeholderEl, placeholderStyle, placeholderClassName);
204 | 
205 |     this.fireEvents();
206 |   }
207 | 
208 |   resetElement() {
209 |     ['position', 'top', 'bottom', 'left', 'width', 'zIndex'].forEach(attr => {
210 |       this.el.style.removeProperty(attr);
211 |     });
212 |     this.el.classList.remove('bottom-sticky', 'top-sticky');
213 |     const { parentNode } = this.placeholderEl;
214 |     if (parentNode) {
215 |       parentNode.removeChild(this.placeholderEl);
216 |     }
217 |   }
218 | 
219 |   getContainerEl() {
220 |     let node = this.el.parentNode;
221 |     while (
222 |       node &&
223 |       node.tagName !== 'HTML' &&
224 |       node.tagName !== 'BODY' &&
225 |       node.nodeType === 1
226 |     ) {
227 |       if (node.hasAttribute('sticky-container')) {
228 |         return node;
229 |       }
230 |       node = node.parentNode;
231 |     }
232 |     return this.el.parentNode;
233 |   }
234 | 
235 |   getXOffset() {
236 |     return this.placeholderEl.getBoundingClientRect().left;
237 |   }
238 | 
239 |   getWidth() {
240 |     return this.placeholderEl.getBoundingClientRect().width;
241 |   }
242 | 
243 |   getHeight() {
244 |     return this.el.getBoundingClientRect().height;
245 |   }
246 | 
247 |   getPlaceholderElRect() {
248 |     return this.placeholderEl.getBoundingClientRect();
249 |   }
250 | 
251 |   getContainerElRect() {
252 |     return this.containerEl.getBoundingClientRect();
253 |   }
254 | 
255 |   getAttribute(name) {
256 |     const expr = this.el.getAttribute(name);
257 |     let result = undefined;
258 |     if (expr) {
259 |       if (this.vm[expr]) {
260 |         result = this.vm[expr];
261 |       } else {
262 |         try {
263 |           result = eval(`(${expr})`);
264 |         } catch (error) {
265 |           result = expr;
266 |         }
267 |       }
268 |     }
269 |     return result;
270 |   }
271 | }
272 | 
273 | export default {
274 |   inserted(el, bind, vnode) {
275 |     if (typeof bind.value === 'undefined' || bind.value) {
276 |       el[namespace] = new Sticky(el, vnode.context);
277 |       el[namespace].doBind();
278 |     }
279 |   },
280 |   unbind(el, bind, vnode) {
281 |     if (el[namespace]) {
282 |       el[namespace].doUnbind();
283 |       el[namespace] = undefined;
284 |     }
285 |   },
286 |   componentUpdated(el, bind, vnode) {
287 |     if (typeof bind.value === 'undefined' || bind.value) {
288 |       if (!el[namespace]) {
289 |         el[namespace] = new Sticky(el, vnode.context);
290 |       }
291 |       el[namespace].doBind();
292 |     } else {
293 |       if (el[namespace]) {
294 |         el[namespace].doUnbind();
295 |       }
296 |     }
297 |   },
298 | };
299 | 


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