From 8a04c4ce3ba4047fb609d01ac04f7b9728cd7cd2 Mon Sep 17 00:00:00 2001
From: Jonathan Kingston <jonathan@jooped.co.uk>
Date: Sat, 4 Jul 2015 11:16:12 +0100
Subject: [PATCH] Adding in named yield proposal

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+- Start Date: 2015-07-04
+- RFC PR: (leave this empty)
+- Ember Issue: (leave this empty)
+
+# Summary
+
+This RFC adds in named yields into components to match the slots proposal for web components; It allows authors to add named areas to place content into their components.
+
+# Motivation
+
+Components are more than just dumb boxes, creating components that are more than just content is currently difficult.
+So in the modal component case allowing the user of the component to be able to specify what is within the title of the modal. 
+
+# Detailed design
+
+templates/components/my-thing.md
+```
+<div>
+  <div class="heading">{{yield thing}}</div>
+  <div>{{yield}}</div>
+</div>
+```
+
+templates/application.md
+```
+Look at my great thing:
+
+<my-thing>
+  Text
+  <div slot="2">Some text 2</div>
+  
+  <h1 slot="thing">Some text 1</h1>
+</my-thing>
+```
+
+The rendered DOM would look similar to this:
+```
+<my-thing>
+  <div>
+    <div class="heading"><h1>Some text 1</h1></div>
+    <div>Text</div>
+  </div>
+</my-thing>
+```
+
+## Distribution
+
+Should loosely match the definition here: https://github.com/w3c/webcomponents/blob/gh-pages/proposals/Slots-Proposal.md
+
+- Is the node text or missing a slot attribute
+  - Send to **default yield**
+- If the slot attribute matches a named yield
+  - Send node to **specified yield**
+- Else
+  - Discard node
+
+
+# Drawbacks
+
+- Slots is still a proposal
+
+# Alternatives
+
+The alternatives are letting all component users redefine structure in their templates repeatedly as currently is happening.
+
+# Unresolved questions
+
+The JavaScript distribution API is stalling slots however I feel this isn't required for Ember.
+