Omnibox: Make HistoryURL Highlight Titles like HistoryQuick Provider

chrome/browser/autocomplete/history_provider.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autocomplete/history_provider.h"
 
 #include <string>
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_input.h"
 #include "chrome/browser/autocomplete/autocomplete_match.h"
 #include "chrome/browser/autocomplete/autocomplete_provider_listener.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/history/history_service_factory.h"
+#include "chrome/browser/history/in_memory_url_index_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/net/url_fixer_upper.h"
 #include "chrome/common/url_constants.h"
 #include "url/url_util.h"
 
 HistoryProvider::HistoryProvider(AutocompleteProviderListener* listener,
                                  Profile* profile,
                                  AutocompleteProvider::Type type)
     : AutocompleteProvider(listener, profile, type) {
 }
@@ skipping 124 matching lines @@
   return (scheme_pos == 0) ? prefix_end : 0;
 }
 
 // static
 bool HistoryProvider::PreventInlineAutocomplete(
     const AutocompleteInput& input) {
   return input.prevent_inline_autocomplete() ||
       (!input.text().empty() &&
        IsWhitespace(input.text()[input.text().length() - 1]));
 }
+
+// static
+ACMatchClassifications HistoryProvider::SpansFromTermMatch(
+    const history::TermMatches& matches,
+    size_t text_length,
+    bool is_url) {
+  ACMatchClassification::Style url_style =
+      is_url ? ACMatchClassification::URL : ACMatchClassification::NONE;
+  ACMatchClassifications spans;
+  if (matches.empty()) {
+    if (text_length)
+      spans.push_back(ACMatchClassification(0, url_style));
+    return spans;
+  }
+  if (matches[0].offset)
+    spans.push_back(ACMatchClassification(0, url_style));
+  size_t match_count = matches.size();
+  for (size_t i = 0; i < match_count;) {
+    size_t offset = matches[i].offset;
+    spans.push_back(ACMatchClassification(offset,
+        ACMatchClassification::MATCH | url_style));
+    // Skip all adjacent matches.
+    do {
+      offset += matches[i].length;
+      ++i;
+    } while ((i < match_count) && (offset == matches[i].offset));
+    if (offset < text_length)
+      spans.push_back(ACMatchClassification(offset, url_style));
+  }
+
+  return spans;
+}
+