Scrollable Content

components.content-item.js

import Ember from 'ember';

export default Ember.Component.extend({
  attributeBindings: ['index:data-item-index']
});

components.nav-item.js

import Ember from 'ember';

export default Ember.Component.extend({
});

components.scroll-to-item.js

import Ember from 'ember';

export default Ember.Component.extend({
  items: [
    'John',
    'Jane',
    'Sally'
  ],
  
  scrollToCurrentItem () {
    const currentItemIndex = this.get('currentItem');
    
    if (Ember.isNone(currentItemIndex) || currentItemIndex === -1 ) {
      return;
    }

    const itemToBeScrolledTo = this.$(`[data-item-index="${this.get('currentItem')}"]`);

      this.$('.tse-scroll-content').scrollTo(itemToBeScrolledTo, {
        duration: 400,
        interrupt: true,
        offset: {
          top: this.get('offset')
        }
      })
  },
  
  didRender () {
		this.scrollToCurrentItem();
  },
  
  
  didUpdateAttrs () {
    this.scrollToCurrentItem();
  }
});

components.sync-item-parent.js

import Ember from 'ember';

export default Ember.Component.extend({
  currentItem: -1,
  actions: {
    selectItem (index) {
      this.set('currentItem', index)
    }
  }
});

components.vertical-nav.js

import Ember from 'ember';

export default Ember.Component.extend({
  items: ["😍", "💁", "🦄"]
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

li {
  text-align: center;
  font-size: 24px;
  line-height: 2;
  border-bottom: 1px solid darkslateblue;
  cursor: pointer;
}

li:hover {
  background-color: fuchsia;
}

.sidebar {
  position: fixed;
  background-color: darkorchid;
  width: 100px;
  top: 0;
  bottom: 0;
  right: 0;
}

.scrollable-container {
	position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 100px;
  background-color: lavender;
}

.item {
  width: 300px;
  height: 400px;
  margin: 100px auto;
  border: 4px solid plum;
  border-radius: 8px;
  font-size: 96px;
  text-align: center;
  font-weight: bold;
  color: mediumorchid;
}

templates.application.hbs

{{sync-item-parent}}

templates.components.content-item.hbs

<section class="item">
	{{text}}
</section>

{{yield}}

templates.components.nav-item.hbs

<li onclick={{action onItemClick}}>{{icon}}</li>
{{yield}}

templates.components.scroll-to-item.hbs

<section class="scrollable-container">
	{{#ember-scrollable vertical=true}}
		{{#each items as |item index|}}
    	{{content-item text=item index=index}}
    {{/each}}
  {{/ember-scrollable}}
</section>

{{yield}}

templates.components.sync-item-parent.hbs

{{scroll-to-item currentItem=currentItem offset=-40}}
{{vertical-nav navigateToItem=(action 'selectItem')}}
{{yield}}

templates.components.vertical-nav.hbs

<section class="sidebar">
  <ul>
  	{{#each items as |item index|}}
    	{{nav-item icon=item onItemClick=(action navigateToItem index)}}
    {{/each}}
  </ul>
</section>
{{yield}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0",
    "jquery.scrollTo": "https://cdnjs.cloudflare.com/ajax/libs/jquery-scrollTo/2.1.2/jquery.scrollTo.min.js"
  },
  "addons": {
    "ember-data": "2.12.1",
    "ember-scrollable": "*"
  }
}