Add "Show saved copy" button in dino page when there's offline copy

chrome/renderer/net/net_error_helper.cc

 // Copyright (c) 2013 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/renderer/net/net_error_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
@@ skipping 32 matching lines @@
 using base::JSONWriter;
 using content::DocumentState;
 using content::RenderFrame;
 using content::RenderFrameObserver;
 using content::RenderThread;
 using content::kUnreachableWebDataURL;
 using error_page::DnsProbeStatus;
 using error_page::DnsProbeStatusToString;
 using error_page::ErrorPageParams;
 using error_page::NetErrorHelperCore;
+using error_page::OfflinePageStatus;
 
 namespace {
 
 // Number of seconds to wait for the navigation correction service to return
 // suggestions.  If it takes too long, just use the local error page.
 const int kNavigationCorrectionFetchTimeoutSec = 3;
 
 NetErrorHelperCore::PageType GetLoadingPageType(RenderFrame* render_frame) {
   blink::WebFrame* web_frame = render_frame->GetWebFrame();
   GURL url = web_frame->provisionalDataSource()->request().url();
@@ skipping 76 matching lines @@
 bool NetErrorHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
 
   IPC_BEGIN_MESSAGE_MAP(NetErrorHelper, message)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_NetErrorInfo, OnNetErrorInfo)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetCanShowNetworkDiagnosticsDialog,
                         OnSetCanShowNetworkDiagnosticsDialog);
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetNavigationCorrectionInfo,
                         OnSetNavigationCorrectionInfo);
 #if defined(OS_ANDROID)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetHasOfflinePages, OnSetHasOfflinePages)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetOfflinePageInfo, OnSetOfflinePageInfo)
 #endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void NetErrorHelper::NetworkStateChanged(bool enabled) {
   core_->NetworkStateChanged(enabled);
 }
 
 void NetErrorHelper::GetErrorHTML(const blink::WebURLError& error,
                                   bool is_failed_post,
                                   bool is_ignoring_cache,
                                   std::string* error_html) {
   core_->GetErrorHTML(GetFrameType(render_frame()), error, is_failed_post,
                       is_ignoring_cache, error_html);
 }
 
 bool NetErrorHelper::ShouldSuppressErrorPage(const GURL& url) {
   return core_->ShouldSuppressErrorPage(GetFrameType(render_frame()), url);
 }
 
 void NetErrorHelper::GenerateLocalizedErrorPage(
     const blink::WebURLError& error,
     bool is_failed_post,
     bool can_show_network_diagnostics_dialog,
-    bool has_offline_pages,
+    OfflinePageStatus offline_page_status,
     scoped_ptr<ErrorPageParams> params,
     bool* reload_button_shown,
     bool* show_saved_copy_button_shown,
     bool* show_cached_copy_button_shown,
-    bool* show_saved_pages_button_shown,
+    bool* show_offline_pages_button_shown,
+    bool* show_offline_copy_button_shown,
     std::string* error_html) const {
   error_html->clear();
 
   int resource_id = IDR_NET_ERROR_HTML;
   const base::StringPiece template_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id));
   if (template_html.empty()) {
     NOTREACHED() << "unable to load template.";
   } else {
     base::DictionaryValue error_strings;
-    LocalizedError::GetStrings(error.reason, error.domain.utf8(),
-                               error.unreachableURL, is_failed_post,
-                               error.staleCopyInCache,
-                               can_show_network_diagnostics_dialog,
-                               has_offline_pages,
-                               RenderThread::Get()->GetLocale(),
-                               render_frame()->GetRenderView()->
-                                   GetAcceptLanguages(),
-                               params.Pass(), &error_strings);
+    LocalizedError::GetStrings(
+        error.reason,
+        error.domain.utf8(),
+        error.unreachableURL,
+        is_failed_post,
+        error.staleCopyInCache,
+        can_show_network_diagnostics_dialog,
+        offline_page_status,
+        RenderThread::Get()->GetLocale(),
+        render_frame()->GetRenderView()->GetAcceptLanguages(),
+        params.Pass(),
+        &error_strings);
     *reload_button_shown = error_strings.Get("reloadButton", nullptr);
     *show_saved_copy_button_shown =
         error_strings.Get("showSavedCopyButton", nullptr);
     *show_cached_copy_button_shown =
         error_strings.Get("cacheButton", nullptr);
-    *show_saved_pages_button_shown =
-        error_strings.Get("showSavedPagesButton", nullptr);
+    *show_offline_pages_button_shown =
+        error_strings.Get("showOfflinePagesButton", nullptr);
+    *show_offline_copy_button_shown =
+        error_strings.Get("showOfflineCopyButton", nullptr);
     // "t" is the id of the template's root node.
     *error_html = webui::GetTemplatesHtml(template_html, &error_strings, "t");
   }
 }
 
 void NetErrorHelper::LoadErrorPage(const std::string& html,
                                    const GURL& failed_url) {
   render_frame()->GetWebFrame()->loadHTMLString(
       html, GURL(kUnreachableWebDataURL), failed_url, true);
 }
 
 void NetErrorHelper::EnablePageHelperFunctions() {
   NetErrorPageController::Install(
       render_frame(), weak_controller_delegate_factory_.GetWeakPtr());
 }
 
 void NetErrorHelper::UpdateErrorPage(const blink::WebURLError& error,
                                      bool is_failed_post,
                                      bool can_show_network_diagnostics_dialog,
-                                     bool has_offline_pages) {
+                                     OfflinePageStatus offline_page_status) {
   base::DictionaryValue error_strings;
-  LocalizedError::GetStrings(error.reason,
-                             error.domain.utf8(),
-                             error.unreachableURL,
-                             is_failed_post,
-                             error.staleCopyInCache,
-                             can_show_network_diagnostics_dialog,
-                             has_offline_pages,
-                             RenderThread::Get()->GetLocale(),
-                             render_frame()->GetRenderView()->
-                                 GetAcceptLanguages(),
-                             scoped_ptr<ErrorPageParams>(),
-                             &error_strings);
+  LocalizedError::GetStrings(
+      error.reason,
+      error.domain.utf8(),
+      error.unreachableURL,
+      is_failed_post,
+      error.staleCopyInCache,
+      can_show_network_diagnostics_dialog,
+      offline_page_status,
+      RenderThread::Get()->GetLocale(),
+      render_frame()->GetRenderView()->GetAcceptLanguages(),
+      scoped_ptr<ErrorPageParams>(),
+      &error_strings);
 
   std::string json;
   JSONWriter::Write(error_strings, &json);
 
   std::string js = "if (window.updateForDnsProbe) "
                    "updateForDnsProbe(" + json + ");";
   base::string16 js16;
   if (!base::UTF8ToUTF16(js.c_str(), js.length(), &js16)) {
     NOTREACHED();
     return;
@@ skipping 65 matching lines @@
 
 void NetErrorHelper::DiagnoseError(const GURL& page_url) {
   render_frame()->Send(new ChromeViewHostMsg_RunNetworkDiagnostics(
       render_frame()->GetRoutingID(), page_url));
 }
 
 void NetErrorHelper::ShowOfflinePages() {
 #if defined(OS_ANDROID)
   render_frame()->Send(new ChromeViewHostMsg_ShowOfflinePages(
       render_frame()->GetRoutingID()));
-#endif
+#endif  // defined(OS_ANDROID)
+}
+
+void NetErrorHelper::LoadOfflineCopy(const GURL& page_url) {
+#if defined(OS_ANDROID)
+  render_frame()->Send(new ChromeViewHostMsg_LoadOfflineCopy(
+      render_frame()->GetRoutingID(), page_url));
+#endif  // defined(OS_ANDROID)
 }
 
 void NetErrorHelper::OnNetErrorInfo(int status_num) {
   DCHECK(status_num >= 0 && status_num < error_page::DNS_PROBE_MAX);
 
   DVLOG(1) << "Received status " << DnsProbeStatusToString(status_num);
 
   core_->OnNetErrorInfo(static_cast<DnsProbeStatus>(status_num));
 }
 
@@ skipping 27 matching lines @@
       base::i18n::IsRTL());
 }
 
 void NetErrorHelper::OnTrackingRequestComplete(
     const blink::WebURLResponse& response,
     const std::string& data) {
   tracking_fetcher_.reset();
 }
 
 #if defined(OS_ANDROID)
-void NetErrorHelper::OnSetHasOfflinePages(bool has_offline_pages) {
-  core_->OnSetHasOfflinePages(has_offline_pages);
+void NetErrorHelper::OnSetOfflinePageInfo(
+    OfflinePageStatus offline_page_status) {
+  core_->OnSetOfflinePageInfo(offline_page_status);
 }
-#endif
+#endif  // defined(OS_ANDROID)