Created
June 20, 2012 01:40
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Cake Pattern
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// You create the trait. | |
trait JavaScriptCompilerComponent { | |
def compiler: JavaScriptCompiler | |
// You add the abstract method to get all javascript files. | |
def jsFiles: Seq[Source] | |
def getCompiledJavaScript = compiler.compile(jsFiles) | |
trait JavaScriptCompiler { | |
def compile(files: Seq[Source]): String | |
} | |
} | |
// You implement it. | |
trait DummyJavaScriptParserComponent extends JavaScriptCompilerComponent { | |
override val compiler = new DummyJavaScriptCompiler | |
class DummyJavaScriptCompiler extends JavaScriptCompiler { | |
override def compile(files: Seq[Source]) = { | |
... | |
} | |
} | |
} | |
trait PageRenderer { | |
def render: Elem | |
} | |
// You add the dependecy. | |
class MyPageRenderer extends PageRenderer { this: JavaScriptCompilerComponent => | |
override val jsFiles = Source.fromFile("test") :: Nil | |
override def render = | |
<html> | |
<script> | |
{getCompiledJavaScript} | |
</script> | |
</html> | |
} | |
// And you inject it. | |
val page = new MyPageRenderer with DummyJavaScriptParserComponent | |
... | |
page.render |
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