From 2dfcd17ea485484cedf636a94b9c89c527e2e0b7 Mon Sep 17 00:00:00 2001
From: Stephen Blott
Date: Fri, 8 May 2015 09:03:56 +0100
Subject: Search completion; add front end cache.

---
 background_scripts/completion.coffee         | 15 ++++++++++-----
 background_scripts/completion_engines.coffee |  8 ++++++--
 background_scripts/main.coffee               | 18 +++++++++---------
 3 files changed, 25 insertions(+), 16 deletions(-)

(limited to 'background_scripts')

diff --git a/background_scripts/completion.coffee b/background_scripts/completion.coffee
index 746e662d..f17ca28c 100644
--- a/background_scripts/completion.coffee
+++ b/background_scripts/completion.coffee
@@ -491,22 +491,27 @@ class MultiCompleter
               # (ie. a SearchEngineCompleter).  This prevents hiding the vomnibar briefly before showing it
               # again, which looks ugly.
               unless shouldRunContinuation and suggestions.length == 0
-                onComplete @prepareSuggestions queryTerms, suggestions
+                onComplete
+                  results: @prepareSuggestions queryTerms, suggestions
+                  callerMayCacheResults: not shouldRunContinuation
               # Allow subsequent queries to begin.
               @filterInProgress = false
               if shouldRunContinuation
                 continuation suggestions, (newSuggestions) =>
                   if 0 < newSuggestions.length
-                    onComplete @prepareSuggestions queryTerms, suggestions.concat newSuggestions
+                    suggestions.push newSuggestions...
+                    onComplete
+                      results: @prepareSuggestions queryTerms, suggestions
+                      callerMayCacheResults: true
               else
                 @filter @mostRecentQuery.queryTerms, @mostRecentQuery.onComplete if @mostRecentQuery
 
   prepareSuggestions: (queryTerms, suggestions) ->
     suggestion.computeRelevancy queryTerms for suggestion in suggestions
     suggestions.sort (a, b) -> b.relevancy - a.relevancy
-    suggestions = suggestions[0...@maxResults]
-    suggestion.generateHtml() for suggestion in suggestions
-    suggestions
+    for suggestion in suggestions[0...@maxResults]
+      suggestion.generateHtml()
+      suggestion
 
 # Utilities which help us compute a relevancy score for a given item.
 RankingUtils =
diff --git a/background_scripts/completion_engines.coffee b/background_scripts/completion_engines.coffee
index 19a18ecd..52db90d0 100644
--- a/background_scripts/completion_engines.coffee
+++ b/background_scripts/completion_engines.coffee
@@ -209,9 +209,13 @@ CompletionEngines =
 
     # We pause in case the user is still typing.
     Utils.setTimeout @delay, handler = @mostRecentHandler = =>
-      if handler != @mostRecentHandler # Bail if another completion has begun, or the user is typing.
+      if handler != @mostRecentHandler
+        # Bail! Another completion has begun, or the user is typing.
+        # NOTE: We do *not* call the callback (because we are not providing results, and we don't want allow
+        # any higher-level component to cache the results -- specifically, the vomnibar itself, via
+        # callerMayCacheResults).
         console.log "bail", completionCacheKey if @debug
-        return callback []
+        return
       @mostRecentHandler = null
       # Don't allow duplicate identical active requests.  This can happen, for example, when the user enters or
       # removes a space, or when they enter a character and immediately delete it.
diff --git a/background_scripts/main.coffee b/background_scripts/main.coffee
index a3ddb48c..1a3281bf 100644
--- a/background_scripts/main.coffee
+++ b/background_scripts/main.coffee
@@ -43,26 +43,26 @@ chrome.storage.local.set
   vimiumSecret: Math.floor Math.random() * 2000000000
 
 completionSources =
-  bookmarks: new BookmarkCompleter()
-  history: new HistoryCompleter()
-  domains: new DomainCompleter()
-  tabs: new TabCompleter()
-  searchEngines: new SearchEngineCompleter()
+  bookmarks: new BookmarkCompleter
+  history: new HistoryCompleter
+  domains: new DomainCompleter
+  tabs: new TabCompleter
+  searchEngines: new SearchEngineCompleter
 
 completers =
   omni: new MultiCompleter [
     completionSources.bookmarks
     completionSources.history
     completionSources.domains
-    # This comes last, because it delivers additional, asynchronous results.
     completionSources.searchEngines
     ]
-  bookmarks: new MultiCompleter([completionSources.bookmarks])
-  tabs: new MultiCompleter([completionSources.tabs])
+  bookmarks: new MultiCompleter [completionSources.bookmarks]
+  tabs: new MultiCompleter [completionSources.tabs]
 
 completionHandlers =
   filter: (completer, args, port) ->
-      completer.filter args.queryTerms, (results) -> port.postMessage id: args.id, results: results
+    completer.filter args.queryTerms, (response) ->
+      port.postMessage extend args, response
 
   refresh: (completer) -> completer.refresh()
   cancel: (completer) -> completer.cancel()
-- 
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