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router.html
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<!DOCTYPE html>
<html>
<head>
<title>router.coffee</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
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<li id="title">
<div class="annotation">
<h1>router.coffee</h1>
</div>
</li>
<li id="section-1">
<div class="annotation">
<div class="pilwrap ">
<a class="pilcrow" href="#section-1">¶</a>
</div>
</div>
<div class="content"><div class='highlight'><pre><span class="string">'use strict'</span>
_ = <span class="built_in">require</span> <span class="string">'underscore'</span>
Backbone = <span class="built_in">require</span> <span class="string">'backbone'</span>
mediator = <span class="built_in">require</span> <span class="string">'chaplin/mediator'</span>
EventBroker = <span class="built_in">require</span> <span class="string">'chaplin/lib/event_broker'</span>
History = <span class="built_in">require</span> <span class="string">'chaplin/lib/history'</span>
Route = <span class="built_in">require</span> <span class="string">'chaplin/lib/route'</span>
utils = <span class="built_in">require</span> <span class="string">'chaplin/lib/utils'</span></pre></div></div>
</li>
<li id="section-2">
<div class="annotation">
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<a class="pilcrow" href="#section-2">¶</a>
</div>
<p>The router which is a replacement for Backbone.Router.
Like the standard router, it creates a Backbone.History
instance and registers routes on it.</p>
</div>
<div class="content"><div class='highlight'><pre>module.<span class="built_in">exports</span> = <span class="class"><span class="keyword">class</span> <span class="title">Router</span> # <span class="title">This</span> <span class="title">class</span> <span class="title">does</span> <span class="title">not</span> <span class="title">extend</span> <span class="title">Backbone</span>.<span class="title">Router</span>.</span></pre></div></div>
</li>
<li id="section-3">
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<a class="pilcrow" href="#section-3">¶</a>
</div>
<p>Borrow the static extend method from Backbone.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="property">@extend</span> = Backbone.Model.extend</pre></div></div>
</li>
<li id="section-4">
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</div>
<p>Mixin an EventBroker.</p>
</div>
<div class="content"><div class='highlight'><pre> _.extend <span class="property">@prototype</span>, EventBroker
<span class="attribute">constructor</span>: <span class="function"><span class="params">(<span class="property">@options</span> = {})</span> -></span></pre></div></div>
</li>
<li id="section-5">
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<a class="pilcrow" href="#section-5">¶</a>
</div>
<p>Enable pushState by default for HTTP(s).
Disable it for file:// schema.</p>
</div>
<div class="content"><div class='highlight'><pre> isWebFile = window.location.protocol <span class="keyword">isnt</span> <span class="string">'file:'</span>
_.defaults <span class="property">@options</span>,
<span class="attribute">pushState</span>: isWebFile
<span class="attribute">root</span>: <span class="string">'/'</span>
<span class="attribute">trailing</span>: <span class="literal">no</span></pre></div></div>
</li>
<li id="section-6">
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<p>Cached regex for stripping a leading subdir and hash/slash.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="property">@removeRoot</span> = <span class="keyword">new</span> RegExp(<span class="string">'^'</span> + utils.escapeRegExp(<span class="property">@options</span>.root) + <span class="string">'(#)?'</span>)
<span class="property">@subscribeEvent</span> <span class="string">'!router:route'</span>, <span class="property">@oldEventError</span>
<span class="property">@subscribeEvent</span> <span class="string">'!router:routeByName'</span>, <span class="property">@oldEventError</span>
<span class="property">@subscribeEvent</span> <span class="string">'!router:changeURL'</span>, <span class="property">@oldURLEventError</span>
<span class="property">@subscribeEvent</span> <span class="string">'dispatcher:dispatch'</span>, <span class="property">@changeURL</span>
mediator.setHandler <span class="string">'router:route'</span>, <span class="property">@route</span>, <span class="keyword">this</span>
mediator.setHandler <span class="string">'router:reverse'</span>, <span class="property">@reverse</span>, <span class="keyword">this</span>
<span class="property">@createHistory</span>()
<span class="attribute">oldEventError</span>:<span class="function"> -></span>
<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'!router:route and !router:routeByName events were removed.
Use `Chaplin.utils.redirectTo`'</span>
<span class="attribute">oldURLEventError</span>:<span class="function"> -></span>
<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'!router:changeURL event was removed.'</span></pre></div></div>
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<li id="section-7">
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<p>Create a Backbone.History instance.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="attribute">createHistory</span>:<span class="function"> -></span>
Backbone.history = <span class="keyword">new</span> History()
<span class="attribute">startHistory</span>:<span class="function"> -></span></pre></div></div>
</li>
<li id="section-8">
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<p>Start the Backbone.History instance to start routing.
This should be called after all routes have been registered.</p>
</div>
<div class="content"><div class='highlight'><pre> Backbone.history.start <span class="property">@options</span></pre></div></div>
</li>
<li id="section-9">
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<p>Stop the current Backbone.History instance from observing URL changes.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="attribute">stopHistory</span>:<span class="function"> -></span>
Backbone.history.stop() <span class="keyword">if</span> Backbone.History.started</pre></div></div>
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<p>Search through backbone history handlers.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="attribute">findHandler</span>: <span class="function"><span class="params">(predicate)</span> -></span>
<span class="keyword">for</span> handler <span class="keyword">in</span> Backbone.history.handlers <span class="keyword">when</span> predicate handler
<span class="keyword">return</span> handler</pre></div></div>
</li>
<li id="section-11">
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<p>Connect an address with a controller action.
Creates a route on the Backbone.History instance.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="attribute">match</span>: <span class="function"><span class="params">(pattern, target, options = {})</span> =></span>
<span class="keyword">if</span> arguments.length <span class="keyword">is</span> <span class="number">2</span> <span class="keyword">and</span> <span class="keyword">typeof</span> target <span class="keyword">is</span> <span class="string">'object'</span></pre></div></div>
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<p>Handles cases like <code>match 'url', controller: 'c', action: 'a'</code>.</p>
</div>
<div class="content"><div class='highlight'><pre> options = target
{controller, action} = options
<span class="keyword">unless</span> controller <span class="keyword">and</span> action
<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'Router#match must receive either target or '</span> +
<span class="string">'options.controller & options.action'</span>
<span class="keyword">else</span></pre></div></div>
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<p>Handles <code>match 'url', 'c#a'</code>.</p>
</div>
<div class="content"><div class='highlight'><pre> {controller, action} = options
<span class="keyword">if</span> controller <span class="keyword">or</span> action
<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'Router#match cannot use both target and '</span> +
<span class="string">'options.controller / options.action'</span></pre></div></div>
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<p>Separate target into controller and controller action.</p>
</div>
<div class="content"><div class='highlight'><pre> [controller, action] = target.split(<span class="string">'#'</span>)</pre></div></div>
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<p>Let each match call provide its own trailing option to appropriate Route.
Pass trailing value from the Router by default.</p>
</div>
<div class="content"><div class='highlight'><pre> _.defaults options, <span class="attribute">trailing</span>: <span class="property">@options</span>.trailing</pre></div></div>
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<p>Create the route.</p>
</div>
<div class="content"><div class='highlight'><pre> route = <span class="keyword">new</span> Route pattern, controller, action, options</pre></div></div>
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<p>Register the route at the Backbone.History instance.
Don’t use Backbone.history.route here because it calls
handlers.unshift, inserting the handler at the top of the list.
Since we want routes to match in the order they were specified,
we’re appending the route at the end.</p>
</div>
<div class="content"><div class='highlight'><pre> Backbone.history.handlers.push {route, <span class="attribute">callback</span>: route.handler}
route</pre></div></div>
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<p>Route a given URL path manually. Returns whether a route matched.
This looks quite like Backbone.History::loadUrl but it
accepts an absolute URL with a leading slash (e.g. /foo)
and passes the routing options to the callback function.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="attribute">route</span>: <span class="function"><span class="params">(pathDesc, params, options)</span> -></span></pre></div></div>
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<p>Try to extract an URL from the pathDesc if it's a hash.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="keyword">if</span> <span class="keyword">typeof</span> pathDesc <span class="keyword">is</span> <span class="string">'object'</span>
path = pathDesc.url
params = pathDesc.params <span class="keyword">if</span> <span class="keyword">not</span> params <span class="keyword">and</span> pathDesc.params
params = <span class="keyword">if</span> params
<span class="keyword">if</span> utils.isArray(params) <span class="keyword">then</span> params.slice() <span class="keyword">else</span> _.extend {}, params
<span class="keyword">else</span>
{}</pre></div></div>
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<p>Accept path to be given via URL wrapped in object,
or implicitly via route name, or explicitly via object.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="keyword">if</span> path?</pre></div></div>
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<p>Remove leading subdir and hash or slash.</p>
</div>
<div class="content"><div class='highlight'><pre> path = path.replace <span class="property">@removeRoot</span>, <span class="string">''</span></pre></div></div>
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<p>Find a matching route.</p>
</div>
<div class="content"><div class='highlight'><pre> handler = <span class="property">@findHandler</span> <span class="function"><span class="params">(handler)</span> -></span> handler.route.test path</pre></div></div>
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<p>Options is the second argument in this case.</p>
</div>
<div class="content"><div class='highlight'><pre> options = params
params = <span class="literal">null</span>
<span class="keyword">else</span>
options = <span class="keyword">if</span> options <span class="keyword">then</span> _.extend {}, options <span class="keyword">else</span> {}</pre></div></div>
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<p>Find a route using a passed via pathDesc string route name.</p>
</div>
<div class="content"><div class='highlight'><pre> handler = <span class="property">@findHandler</span> <span class="function"><span class="params">(handler)</span> -></span>
<span class="keyword">if</span> handler.route.matches pathDesc
params = handler.route.normalizeParams(params)
<span class="keyword">return</span> <span class="literal">true</span> <span class="keyword">if</span> params
<span class="literal">false</span>
<span class="keyword">if</span> handler</pre></div></div>
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<p>Update the URL programmatically after routing.</p>
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<div class="content"><div class='highlight'><pre> _.defaults options, <span class="attribute">changeURL</span>: <span class="literal">true</span>
handler.callback path <span class="keyword">or</span> params, options
<span class="literal">true</span>
<span class="keyword">else</span>
<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'Router#route: request was not routed'</span></pre></div></div>
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<p>Find the URL for given criteria using the registered routes and
provided parameters. The criteria may be just the name of a route
or an object containing the name, controller, and/or action.
Warning: this is usually <strong>hot</strong> code in terms of performance.
Returns the URL string or false.</p>
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<div class="content"><div class='highlight'><pre> <span class="attribute">reverse</span>: <span class="function"><span class="params">(criteria, params, query)</span> -></span>
root = <span class="property">@options</span>.root
<span class="keyword">if</span> params? <span class="keyword">and</span> <span class="keyword">typeof</span> params <span class="keyword">isnt</span> <span class="string">'object'</span>
<span class="keyword">throw</span> <span class="keyword">new</span> TypeError <span class="string">'Router#reverse: params must be an array or an '</span> +
<span class="string">'object'</span></pre></div></div>
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<p>First filter the route handlers to those that are of the same name.</p>
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<div class="content"><div class='highlight'><pre> handlers = Backbone.history.handlers
<span class="keyword">for</span> handler <span class="keyword">in</span> handlers <span class="keyword">when</span> handler.route.matches criteria</pre></div></div>
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<p>Attempt to reverse using the provided parameter hash.</p>
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<div class="content"><div class='highlight'><pre> reversed = handler.route.reverse params, query</pre></div></div>
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<p>Return the url if we got a valid one; else we continue on.</p>
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<div class="content"><div class='highlight'><pre> <span class="keyword">if</span> reversed <span class="keyword">isnt</span> <span class="literal">false</span>
url = <span class="keyword">if</span> root <span class="keyword">then</span> root + reversed <span class="keyword">else</span> reversed
<span class="keyword">return</span> url</pre></div></div>
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<p>We didn't get anything.</p>
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<div class="content"><div class='highlight'><pre> <span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">'Router#reverse: invalid route specified'</span></pre></div></div>
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<p>Change the current URL, add a history entry.</p>
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<div class="content"><div class='highlight'><pre> <span class="attribute">changeURL</span>: <span class="function"><span class="params">(controller, params, route, options)</span> -></span>
<span class="keyword">return</span> <span class="keyword">unless</span> route.path? <span class="keyword">and</span> options.changeURL
url = route.path + <span class="keyword">if</span> route.query <span class="keyword">then</span> <span class="string">"?<span class="subst">#{route.query}</span>"</span> <span class="keyword">else</span> <span class="string">""</span>
navigateOptions =</pre></div></div>
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<p>Do not trigger or replace per default.</p>
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<div class="content"><div class='highlight'><pre> <span class="attribute">trigger</span>: options.trigger <span class="keyword">is</span> <span class="literal">true</span>
<span class="attribute">replace</span>: options.replace <span class="keyword">is</span> <span class="literal">true</span></pre></div></div>
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<p>Navigate to the passed URL and forward options to Backbone.</p>
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<div class="content"><div class='highlight'><pre> Backbone.history.navigate url, navigateOptions</pre></div></div>
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<h2 id="disposal">Disposal</h2>
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<div class="content"><div class='highlight'><pre> <span class="attribute">disposed</span>: <span class="literal">false</span>
<span class="attribute">dispose</span>:<span class="function"> -></span>
<span class="keyword">return</span> <span class="keyword">if</span> <span class="property">@disposed</span></pre></div></div>
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<p>Stop Backbone.History instance and remove it.</p>
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<div class="content"><div class='highlight'><pre> <span class="property">@stopHistory</span>()
<span class="keyword">delete</span> Backbone.history
<span class="property">@unsubscribeAllEvents</span>()
mediator.removeHandlers <span class="keyword">this</span></pre></div></div>
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<p>Finished.</p>
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<div class="content"><div class='highlight'><pre> <span class="property">@disposed</span> = <span class="literal">true</span></pre></div></div>
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<p>You’re frozen when your heart’s not open.</p>
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<div class="content"><div class='highlight'><pre> Object.freeze? <span class="keyword">this</span></pre></div></div>
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