Implement chrome.experimental.downloads.search()

content/browser/download/download_manager.cc

 // Copyright (c) 2011 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 "content/browser/download/download_manager.h"
 
 #include <iterator>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/stringprintf.h"
 #include "base/synchronization/lock.h"
 #include "base/sys_string_conversions.h"
 #include "base/task.h"
 #include "build/build_config.h"
 #include "content/browser/browser_context.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/content_browser_client.h"
 #include "content/browser/download/download_create_info.h"
 #include "content/browser/download/download_file_manager.h"
 #include "content/browser/download/download_item.h"
 #include "content/browser/download/download_manager_delegate.h"
 #include "content/browser/download/download_persistent_store_info.h"
+#include "content/browser/download/download_query.h"
 #include "content/browser/download/download_stats.h"
 #include "content/browser/download/download_status_updater.h"
 #include "content/browser/download/interrupt_reasons.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/notification_service.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 129 matching lines @@
   DCHECK(result);
 
   for (DownloadMap::iterator it = history_downloads_.begin();
        it != history_downloads_.end(); ++it) {
     if (!it->second->is_temporary() &&
         (dir_path.empty() || it->second->full_path().DirName() == dir_path))
       result->push_back(it->second);
   }
 }
 
+void DownloadManager::Search(const download_util::DownloadQuery& query,
+                             DownloadVector* results) const {
+  query.Search(downloads_.begin(), downloads_.end(), results);
+}
+
 void DownloadManager::SearchDownloads(const string16& query,
                                       DownloadVector* result) {
   string16 query_lower(base::i18n::ToLower(query));
 
   for (DownloadMap::iterator it = history_downloads_.begin();
        it != history_downloads_.end(); ++it) {
     DownloadItem* download_item = it->second;
 
     if (download_item->is_temporary())
       continue;
@@ skipping 633 matching lines @@
 
 // The history service has retrieved all download entries. 'entries' contains
 // 'DownloadPersistentStoreInfo's in sorted order (by ascending start_time).
 void DownloadManager::OnPersistentStoreQueryComplete(
     std::vector<DownloadPersistentStoreInfo>* entries) {
   // TODO(rdsmith): Remove this and related logic when
   // http://crbug.com/85408 is fixed.
   largest_db_handle_in_history_ = 0;
 
   for (size_t i = 0; i < entries->size(); ++i) {
-    DownloadItem* download = new DownloadItem(this, entries->at(i));
+    DownloadItem* download = new DownloadItem(this, entries->at(i), -1 - i);

[cbentzel, 2011/10/20 18:18:53]

Why -1 - i? 

     // TODO(rdsmith): Remove after http://crbug.com/85408 resolved.
     CHECK(!ContainsKey(history_downloads_, download->db_handle()));
     downloads_.insert(download);
     history_downloads_[download->db_handle()] = download;
     VLOG(20) << __FUNCTION__ << "()" << i << ">"
              << " download = " << download->DebugString(true);
 
     if (download->db_handle() > largest_db_handle_in_history_)
       largest_db_handle_in_history_ = download->db_handle();
   }
@@ skipping 242 matching lines @@
 void DownloadManager::MarkDownloadOpened(DownloadItem* download) {
   delegate_->UpdateItemInPersistentStore(download);
   int num_unopened = 0;
   for (DownloadMap::iterator it = history_downloads_.begin();
        it != history_downloads_.end(); ++it) {
     if (it->second->IsComplete() && !it->second->opened())
       ++num_unopened;
   }
   download_stats::RecordOpensOutstanding(num_unopened);
 }