components/omnibox/browser/history_provider.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/omnibox/browser/history_provider.h"
   6
   7 #include <string>
   8
   9 #include "base/strings/string_util.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "components/bookmarks/browser/bookmark_model.h"
  12 #include "components/history/core/browser/history_service.h"
  13 #include "components/omnibox/browser/autocomplete_input.h"
  14 #include "components/omnibox/browser/autocomplete_match.h"
  15 #include "components/omnibox/browser/in_memory_url_index_types.h"
  16 #include "url/url_util.h"
  17
  18 using bookmarks::BookmarkModel;
  19
  20 void HistoryProvider::DeleteMatch(const AutocompleteMatch& match) {
  21   DCHECK(done_);
  22   DCHECK(client_);
  23   DCHECK(match.deletable);
  24
  25   history::HistoryService* const history_service = client_->GetHistoryService();
  26
  27   // Delete the underlying URL along with all its visits from the history DB.
  28   // The resulting HISTORY_URLS_DELETED notification will also cause all caches
  29   // and indices to drop any data they might have stored pertaining to the URL.
  30   DCHECK(history_service);
  31   DCHECK(match.destination_url.is_valid());
  32   history_service->DeleteURL(match.destination_url);
  33
  34   DeleteMatchFromMatches(match);
  35 }
  36
  37 // static
  38 bool HistoryProvider::PreventInlineAutocomplete(
  39     const AutocompleteInput& input) {
  40   return input.prevent_inline_autocomplete() ||
  41       (!input.text().empty() &&
  42        base::IsUnicodeWhitespace(input.text()[input.text().length() - 1]));
  43 }
  44
  45 HistoryProvider::HistoryProvider(AutocompleteProvider::Type type,
  46                                  AutocompleteProviderClient* client)
  47     : AutocompleteProvider(type), client_(client) {
  48 }
  49
  50 HistoryProvider::~HistoryProvider() {}
  51
  52 void HistoryProvider::DeleteMatchFromMatches(const AutocompleteMatch& match) {
  53   bool found = false;
  54   BookmarkModel* bookmark_model = client_->GetBookmarkModel();
  55   for (ACMatches::iterator i(matches_.begin()); i != matches_.end(); ++i) {
  56     if (i->destination_url == match.destination_url && i->type == match.type) {
  57       found = true;
  58       if ((i->type == AutocompleteMatchType::URL_WHAT_YOU_TYPED) ||
  59           (bookmark_model &&
  60            bookmark_model->IsBookmarked(i->destination_url))) {
  61         // We can't get rid of What-You-Typed or Bookmarked matches,
  62         // but we can make them look like they have no backing data.
  63         i->deletable = false;
  64         i->description.clear();
  65         i->description_class.clear();
  66       } else {
  67         matches_.erase(i);
  68       }
  69       break;
  70     }
  71   }
  72   DCHECK(found) << "Asked to delete a URL that isn't in our set of matches";
  73 }
  74
  75 // static
  76 ACMatchClassifications HistoryProvider::SpansFromTermMatch(
  77     const TermMatches& matches,
  78     size_t text_length,
  79     bool is_url) {
  80   ACMatchClassification::Style url_style =
  81       is_url ? ACMatchClassification::URL : ACMatchClassification::NONE;
  82   ACMatchClassifications spans;
  83   if (matches.empty()) {
  84     if (text_length)
  85       spans.push_back(ACMatchClassification(0, url_style));
  86     return spans;
  87   }
  88   if (matches[0].offset)
  89     spans.push_back(ACMatchClassification(0, url_style));
  90   size_t match_count = matches.size();
  91   for (size_t i = 0; i < match_count;) {
  92     size_t offset = matches[i].offset;
  93     spans.push_back(ACMatchClassification(offset,
  94         ACMatchClassification::MATCH | url_style));
  95     // Skip all adjacent matches.
  96     do {
  97       offset += matches[i].length;
  98       ++i;
  99     } while ((i < match_count) && (offset == matches[i].offset));
 100     if (offset < text_length)
 101       spans.push_back(ACMatchClassification(offset, url_style));
 102   }
 103
 104   return spans;
 105 }