got basic title metadata extraction working

h/js/host.coffee

@@ -64,6 +64,8 @@ class Annotator.Host extends Annotator
           parsed[k] = v
         parsed
 
+    this.addPlugin 'Document'
+
     # Build a channel for the publish API
     @api = Channel.build
       origin: '*'
@@ -158,6 +160,10 @@ class Annotator.Host extends Annotator
           @drag.last = null
         )
 
+        .bind('getDocumentMetadata', =>
+          return @plugins.Document.getDocumentMetadata()
+        )
+
   scanDocument: (reason = "something happened") =>
     try
       console.log "Analyzing host frame, because " + reason + "..."
@@ -263,4 +269,4 @@ class Annotator.Host extends Annotator
   addToken: (token) =>
     @api.notify
       method: 'addToken'
-      params: token
\ No newline at end of file
+      params: token

h/js/plugin/document.coffee

@@ -4,9 +4,15 @@ class Annotator.Plugin.Document extends Annotator.Plugin
     'beforeAnnotationCreated': 'beforeAnnotationCreated'
 
   pluginInit: ->
-    console.log "initializing Document plugin!"
+    @metadata = null
 
   beforeAnnotationCreated: (annotation) =>
-    debugger
-    alert "creating annotation #{annotation}"
+    if not @metadata
+      @metadata = this.getDocumentMetadata()
+    annotation.document = @metadata
 
+  getDocumentMetadata: =>
+    $ = jQuery
+    @metadata =
+      title: $("head title").text()
+    return @metadata

h/js/services.coffee

@@ -365,6 +365,11 @@ class Hypothesis extends Annotator
       console.log "Also loading annotations for: " + href
       this.plugins.Store.loadAnnotationsFromSearch uri: href
 
+    # get metadata for the annotated document
+    @provider.call
+      method: 'getDocumentMetadata'
+      success: (metadata) =>
+        this.plugins.Document.metadata = metadata
 
 class DraftProvider
   drafts: []