Refresh the history page if history entries get deleted, except for when currently editing entries

chrome/browser/ui/webui/history_ui.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 "chrome/browser/ui/webui/history_ui.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/callback.h"
@@ skipping 14 matching lines @@
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/webui/chrome_web_ui_data_source.h"
 #include "chrome/browser/ui/webui/favicon_source.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/time_format.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_delegate.h"
 #include "content/browser/user_metrics.h"
+#include "content/common/notification_source.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "grit/theme_resources.h"
 #include "net/base/escape.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 // Maximum number of search results to return in a given search. We should
@@ skipping 83 matching lines @@
   cancelable_search_consumer_.CancelAllRequests();
   cancelable_delete_consumer_.CancelAllRequests();
 }
 
 WebUIMessageHandler* BrowsingHistoryHandler::Attach(WebUI* web_ui) {
   // Create our favicon data source.
   Profile* profile = web_ui->GetProfile();
   profile->GetChromeURLDataManager()->AddDataSource(
       new FaviconSource(profile, FaviconSource::FAVICON));
 
+  // Get notifications when history is cleared.
+  registrar_.Add(this, NotificationType::HISTORY_URLS_DELETED,
+      Source<Profile>(profile->GetOriginalProfile()));
   return WebUIMessageHandler::Attach(web_ui);
 }
 
 void BrowsingHistoryHandler::RegisterMessages() {
   web_ui_->RegisterMessageCallback("getHistory",
       NewCallback(this, &BrowsingHistoryHandler::HandleGetHistory));
   web_ui_->RegisterMessageCallback("searchHistory",
       NewCallback(this, &BrowsingHistoryHandler::HandleSearchHistory));
   web_ui_->RegisterMessageCallback("removeURLsOnOneDay",
       NewCallback(this, &BrowsingHistoryHandler::HandleRemoveURLsOnOneDay));
@@ skipping 205 matching lines @@
     } else {
       exploded.month = 12;
       exploded.year--;
     }
     options.begin_time = base::Time::FromLocalExploded(exploded);
   }
 
   return options;
 }
 
+void BrowsingHistoryHandler::Observe(NotificationType type,
+                                     const NotificationSource& source,
+                                     const NotificationDetails& details) {
+  if (type != NotificationType::HISTORY_URLS_DELETED) {
+    NOTREACHED();
+    return;
+  }
+
+  // Some URLs were deleted from history. Reload the list.
+  web_ui_->CallJavascriptFunction("historyDeleted");
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 //
 // HistoryUI
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 HistoryUI::HistoryUI(TabContents* contents) : ChromeWebUI(contents) {
   AddMessageHandler((new BrowsingHistoryHandler())->Attach(this));
 
   HistoryUIHTMLSource* html_source = new HistoryUIHTMLSource();
 
   // Set up the chrome://history/ source.
   contents->profile()->GetChromeURLDataManager()->AddDataSource(html_source);
 }
 
 // static
 const GURL HistoryUI::GetHistoryURLWithSearchText(const string16& text) {
   return GURL(std::string(chrome::kChromeUIHistoryURL) + "#q=" +
               EscapeQueryParamValue(UTF16ToUTF8(text), true));
 }
 
 // static
 RefCountedMemory* HistoryUI::GetFaviconResourceBytes() {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytes(IDR_HISTORY_FAVICON);
 }