Add Search Service in Enhanced Bookmark Bridge

chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java
index 20b930a6a5da660478b1ee618c7efe7bdb5e3c68..50d601c9002f88c72581af242266cda3d54fb2a2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/EnhancedBookmarksBridge.java
@@ -20,20 +20,32 @@ import java.util.List;
 @JNINamespace("enhanced_bookmarks::android")
 public final class EnhancedBookmarksBridge {
     private long mNativeEnhancedBookmarksBridge;
-    private final ObserverList<FiltersObserver> mObservers =
+    private final ObserverList<FiltersObserver> mFilterObservers =
             new ObserverList<FiltersObserver>();
+    private final ObserverList<SearchServiceObserver> mSearchObservers =
+            new ObserverList<SearchServiceObserver>();
 
     /**
      * Interface to provide consumers notifications to changes in clusters
      */
     public interface FiltersObserver {
         /**
-         * Invoked when client detects that filters have been
-         * added / removed from the server.
+         * Invoked when client detects that filters have been added/removed from the server.
          */
         void onFiltersChanged();
     }
 
+    /**
+     * Interface to provide consumers notifications to changes in search service results.
+     */
+    public interface SearchServiceObserver {
+        /**
+         * Invoked when client detects that search results have been updated. This callback is
+         * guaranteed to be called only once and only for the most recent query.
+         */
+        void onSearchResultsReturned();
+    }
+
     public EnhancedBookmarksBridge(Profile profile) {
         mNativeEnhancedBookmarksBridge = nativeInit(profile);
     }
@@ -59,7 +71,7 @@ public final class EnhancedBookmarksBridge {
      * @param observer Observer to add
      */
     public void addFiltersObserver(FiltersObserver observer) {
-        mObservers.addObserver(observer);
+        mFilterObservers.addObserver(observer);
     }
 
     /**
@@ -67,7 +79,7 @@ public final class EnhancedBookmarksBridge {
      * @param observer Observer to remove
      */
     public void removeFiltersObserver(FiltersObserver observer) {
-        mObservers.removeObserver(observer);
+        mFilterObservers.removeObserver(observer);
     }
 
     /**
@@ -82,6 +94,42 @@ public final class EnhancedBookmarksBridge {
     }
 
     /**
+     * Sends request to search server for querying related bookmarks.
+     * @param query Keyword used to find related bookmarks.
+     */
+    public void sendSearchRequest(String query) {
+        nativeSendSearchRequest(mNativeEnhancedBookmarksBridge, query);
+    }
+
+    /**
+     * Get list of bookmarks as result of a search request that was sent before in
+     * {@link EnhancedBookmarksBridge#sendSearchRequest(String)}. Normally this function should be
+     * called after {@link SearchServiceObserver#onSearchResultsReturned()}
+     * @param query Keyword used to find related bookmarks.
+     * @return List of BookmarkIds that are related to query. It will be null if the request is
+     *         still on the fly, or empty list if there are no results for the query.
+     */
+    public List<BookmarkId> getSearchResultsForQuery(String query) {
+        return nativeGetSearchResults(mNativeEnhancedBookmarksBridge, query);
+    }
+
+    /**
+     * Registers a SearchObserver that listens to search request updates.
+     * @param observer Observer to add
+     */
+    public void addSearchObserver(SearchServiceObserver observer) {
+        mSearchObservers.addObserver(observer);
+    }
+
+    /**
+     * Unregisters a SearchObserver that listens to search request updates.
+     * @param observer Observer to remove
+     */
+    public void removeSearchObserver(SearchServiceObserver observer) {
+        mSearchObservers.removeObserver(observer);
+    }
+
+    /**
      * @return Current set of known auto-filters for bookmarks.
      */
     public List<String> getFilters() {
@@ -92,12 +140,24 @@ public final class EnhancedBookmarksBridge {
 
     @CalledByNative
     private void onFiltersChanged() {
-        for (FiltersObserver observer : mObservers) {
+        for (FiltersObserver observer : mFilterObservers) {
             observer.onFiltersChanged();
         }
     }
 
     @CalledByNative
+    private void onSearchResultReturned() {
+        for (SearchServiceObserver observer : mSearchObservers) {
+            observer.onSearchResultsReturned();
+        }
+    }
+
+    @CalledByNative
+    private static List<BookmarkId> createBookmarkIdList() {
+        return new ArrayList<BookmarkId>();
+    }
+
+    @CalledByNative
     private static void addToBookmarkIdList(List<BookmarkId> bookmarkIdList, long id, int type) {
         bookmarkIdList.add(new BookmarkId(id, type));
     }
@@ -110,5 +170,8 @@ public final class EnhancedBookmarksBridge {
             int type, String description);
     private native void nativeGetBookmarksForFilter(long nativeEnhancedBookmarksBridge,
             String filter, List<BookmarkId> list);
+    private native List<BookmarkId> nativeGetSearchResults(long nativeEnhancedBookmarksBridge,
+            String query);
     private native String[] nativeGetFilters(long nativeEnhancedBookmarksBridge);
+    private native void nativeSendSearchRequest(long nativeEnhancedBookmarksBridge, String query);
 }