Last active
July 14, 2016 02:24
-
-
Save uchcode/4e65574693e40966d2f4d82356777904 to your computer and use it in GitHub Desktop.
State Action Model Patterm(SAM) example
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <h1>Hello world</h1> | |
| <div id="present"></div> | |
| <script> | |
| //////////////////////////////////////////////////////////////////////////////// | |
| // MODEL | |
| class Model { | |
| constructor(view) { | |
| this.view = view; | |
| this.ready = false; | |
| this.complete = false; | |
| } | |
| // | |
| isReady() { | |
| return ( | |
| !this.ready | |
| && !this.complete | |
| ); | |
| } | |
| isComplete() { | |
| return ( | |
| this.ready | |
| && this.complete | |
| ); | |
| } | |
| // SAM pattern | |
| reactive(data) { | |
| this.present(data); | |
| this.render(); | |
| this.nap(); | |
| } | |
| present(data) { | |
| if (data.ready !== undefined) { | |
| this.ready = data.ready; | |
| } | |
| if (data.complete !== undefined) { | |
| this.complete = data.complete; | |
| } | |
| } | |
| render() { | |
| const {view} = this; | |
| view.render( view.present(this), this ); | |
| } | |
| nap() { | |
| if (!this.isReady() && !this.isComplete()) { | |
| this.stop({}); | |
| } | |
| } | |
| // | |
| init(data) { | |
| this.reactive(data); | |
| } | |
| reset(data) { | |
| data.ready = false; | |
| data.complete = false; | |
| this.reactive(data); | |
| } | |
| start(data) { | |
| data.ready = true; | |
| this.reactive(data); | |
| } | |
| stop(data) { | |
| data.complete = true; | |
| this.reactive(data); | |
| } | |
| } | |
| //////////////////////////////////////////////////////////////////////////////// | |
| // VIEW | |
| class View { | |
| present(model) { | |
| var contents = {template:'<div>oops... something went wrong, the system is in an invalid state</div>'}; | |
| if (model.isReady()) { | |
| contents = this.ready({}); | |
| } | |
| if (model.isComplete()) { | |
| contents = this.complete({}); | |
| } | |
| if (!model.isReady() && !model.isComplete()) { | |
| contents = {template:'<div></div>'}; | |
| } | |
| return contents; | |
| } | |
| // | |
| render(contents, intents) { | |
| const callback = (action, parameter) => { | |
| return evt => { | |
| intents[action](parameter); | |
| evt.preventDefault(); | |
| evt.stopPropagation(); | |
| return false; | |
| } | |
| } | |
| const {template, action, parameter} = contents; | |
| const newElement = document.createElement('div'); | |
| newElement.innerHTML = template.trim(); | |
| const form = newElement.getElementsByTagName('form')[0]; | |
| if (form && action && parameter) { | |
| form.addEventListener('submit', callback(action, parameter)); | |
| } | |
| const element = document.getElementById('present'); | |
| if (element.childNodes.length) { | |
| element.replaceChild(newElement.childNodes[0], element.childNodes[0]); | |
| } else { | |
| element.appendChild(newElement.childNodes[0]); | |
| } | |
| } | |
| // | |
| ready(data) { | |
| return { | |
| template: ` | |
| <div> | |
| <p>Ready?</p> | |
| <form> | |
| <div class="form-group"> | |
| <input type="submit" value="Start"> | |
| </div> | |
| </form> | |
| </div>`, | |
| action: 'start', | |
| parameter: {} | |
| }; | |
| } | |
| complete(data) { | |
| return { | |
| template: ` | |
| <div> | |
| <p>Hello! Welcome to the reactive world.</p> | |
| <form> | |
| <div class="form-group"> | |
| <input type="submit" value="Reset"> | |
| </div> | |
| </form> | |
| </div>`, | |
| action: 'reset', | |
| parameter: {} | |
| }; | |
| } | |
| } | |
| //////////////////////////////////////////////////////////////////////////////// | |
| // APPLICATION | |
| (() => { | |
| const view = new View(); | |
| const model = new Model(view); | |
| model.init({}); | |
| })(); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment