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ember-scroll-operator

v0.0.8

Published

Handle the preservation of scrolling positions when traversing routes via the browser's back and forward buttons.

Downloads

3

Readme

ember-scroll-operator

npm version npm Ember Observer Score

This ember-cli addon provides two route mixins that will handle scroll preservation and resetting. Read more for details.

Theme Music

https://www.youtube.com/embed/cA9gUspn6gc

(Recommended listening; please mentally replace the word 'smooth' with 'scroll'.)

ScrollOperatorMixin

This will save the scrolling position of a route. When the route is re-entered, it will automatically scroll to the previously saved position only if accessed by the browser's forward and back buttons. Accessing the route via link-to or address bar will not trigger this behavior. This is by design in order to more closely emulate the HTML experience.

import ScrollOperatorMixin from 'ember-scroll-operator/mixins/scroll-operator';

export default Ember.Route.extend(ScrollOperatorMixin, {

  // If any of the following methods are implemented in your route, be sure to
  // include a call to the parent to make sure the mixin is included.

  activate() {
    this._super(...arguments);
    // existing code
  },

  deactivate() {
    this._super(...arguments);
    // existing code
  },

  beforeModel() {
    this._super(...arguments);
    // existing code
  },

  setupController() {
    this._super(...arguments);
    // existing code
  },

});

ResetScrollMixin

A simple mixin to ensure that a route is always scrolled to the top when accessed.

import ResetScrollMixin from 'ember-scroll-operator/mixins/reset-scroll';

export default Ember.Route.extend(ResetScrollMixin, {

  // If the following methods are implemented in your route, be sure to include
  // a call to the parent to make sure the mixin is included.

  activate() {
    this._super(...arguments);
    // existing code
  },

});

Development Setup

Installation

  • git clone this repository
  • npm install
  • bower install

Running

  • ember server
  • Visit your app at http://localhost:4200.

Running Tests

  • npm test (Runs ember try:testall to test your addon against multiple Ember versions)
  • ember test
  • ember test --server

Building

  • ember build

For more information on using ember-cli, visit http://www.ember-cli.com/.

Credits

Thanks to @gdub22 for their insight on determining when transitions are triggered by the browser's back/forward buttons (related).