Scope

A scope represents an isolation within templates. Often times, you have many different areas that have completely different scoping then others.

Common examples are iterations, sub-views, directives, etc... Each scope may have many child scopes, and a single parent scope, creating a tree. This allows scopes to bubble up, and could possibly lead to certain bubble rules.

Getting Started

Get started by installing it through components:

component install viewjs-scope --save

Require it:

var scope = require('scope');

Usage

Create a new scope through the exported function:

scope(); // new scope.Scope();

Attach a parent to it:

scope()
  .parent(scope());

Childrens:

scope()
  .child(scope());

Finally, add attributes:

scope()
  .set('foo', 123)
  .set('name', 'John')

Getter

The .get() method on any scope will, if the key is not found on the immediate scope, bubble up to the parents until it finds it, otherwise it'll return undefined.

var parentA = scope().attr('foo', 55);
var parentB = scope()
  .parent(parentA)
  .attr('world', 'hello');
var child   = scope()
  .parent(parentB)
  .attr('five', 5);

Now we can grab any one of those attributes by only touching the child scope:

scope.get('five'); // 5
scope.get('world'); // 'hello'
scope.get('foo'); // 55

Note that .attr(key, value) is an alias to .set(key, value).

Testing

Run with mocha

component build --dev

Then:

open test/index.html

License

The MIT License (MIT)

Copyright (c) 2014 Daniel Fagnan dnfagnan@gmail.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.