Add the onBeforeNavigate and onErrorOccured events to the webNavigation API.

Also, rewrite the onCommitted event such that AUTO_SUBFRAME events are also registered.

The frameId and the requestId fields are still unimplemented.

Also, there occur navigation events after an error is reported.

BUG=50943
TEST=WebNavigationEvents

Review URL: http://codereview.chromium.org/3436002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@59641 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 126 insertions, 19 deletions

diff --git a/chrome/browser/extensions/extension_webnavigation_api.cc b/chrome/browser/extensions/extension_webnavigation_api.cc
index 4a545fd..de2442f 100644
--- a/chrome/browser/extensions/extension_webnavigation_api.cc
+++ b/chrome/browser/extensions/extension_webnavigation_api.cc
@@ -13,9 +13,11 @@
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/extensions/extension_webnavigation_api_constants.h"
 #include "chrome/browser/profile.h"
-#include "chrome/browser/tab_contents/navigation_entry.h"
+#include "chrome/browser/tab_contents/navigation_controller.h"
+#include "chrome/browser/tab_contents/provisional_load_details.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/notification_service.h"
+#include "net/base/net_errors.h"
 
 namespace keys = extension_webnavigation_api_constants;
 
@@ -28,7 +30,13 @@ ExtensionWebNavigationEventRouter::GetInstance() {
 void ExtensionWebNavigationEventRouter::Init() {
   if (registrar_.IsEmpty()) {
     registrar_.Add(this,
-                   NotificationType::NAV_ENTRY_COMMITTED,
+                   NotificationType::FRAME_PROVISIONAL_LOAD_START,
+                   NotificationService::AllSources());
+    registrar_.Add(this,
+                   NotificationType::FRAME_PROVISIONAL_LOAD_COMMITTED,
+                   NotificationService::AllSources());
+    registrar_.Add(this,
+                   NotificationType::FAIL_PROVISIONAL_LOAD_WITH_ERROR,
                    NotificationService::AllSources());
   }
 }
@@ -38,35 +46,64 @@ void ExtensionWebNavigationEventRouter::Observe(
     const NotificationSource& source,
     const NotificationDetails& details) {
   switch (type.value) {
-    case NotificationType::NAV_ENTRY_COMMITTED:
-      NavEntryCommitted(
+    case NotificationType::FRAME_PROVISIONAL_LOAD_START:
+      FrameProvisionalLoadStart(
+          Source<NavigationController>(source).ptr(),
+          Details<ProvisionalLoadDetails>(details).ptr());
+      break;
+    case NotificationType::FRAME_PROVISIONAL_LOAD_COMMITTED:
+      FrameProvisionalLoadCommitted(
+          Source<NavigationController>(source).ptr(),
+          Details<ProvisionalLoadDetails>(details).ptr());
+      break;
+    case NotificationType::FAIL_PROVISIONAL_LOAD_WITH_ERROR:
+      FailProvisionalLoadWithError(
           Source<NavigationController>(source).ptr(),
-          Details<NavigationController::LoadCommittedDetails>(details).ptr());
+          Details<ProvisionalLoadDetails>(details).ptr());
       break;
 
     default:
       NOTREACHED();
   }
 }
+void ExtensionWebNavigationEventRouter::FrameProvisionalLoadStart(
+    NavigationController* controller,
+    ProvisionalLoadDetails* details) {
+  ListValue args;
+  DictionaryValue* dict = new DictionaryValue();
+  dict->SetInteger(keys::kTabIdKey,
+                   ExtensionTabUtil::GetTabId(controller->tab_contents()));
+  dict->SetString(keys::kUrlKey,
+                  details->url().spec());
+  dict->SetInteger(keys::kFrameIdKey, 0);
+  dict->SetInteger(keys::kRequestIdKey, 0);
+  dict->SetReal(keys::kTimeStampKey,
+                (base::Time::Now() - base::Time::UnixEpoch()).InMilliseconds());
+  args.Append(dict);
 
-void ExtensionWebNavigationEventRouter::NavEntryCommitted(
+  std::string json_args;
+  base::JSONWriter::Write(&args, false, &json_args);
+  DispatchEvent(controller->profile(), keys::kOnBeforeNavigate, json_args);
+}
+
+void ExtensionWebNavigationEventRouter::FrameProvisionalLoadCommitted(
     NavigationController* controller,
-    NavigationController::LoadCommittedDetails* details) {
+    ProvisionalLoadDetails* details) {
   ListValue args;
   DictionaryValue* dict = new DictionaryValue();
   dict->SetInteger(keys::kTabIdKey,
                    ExtensionTabUtil::GetTabId(controller->tab_contents()));
   dict->SetString(keys::kUrlKey,
-                  details->entry->url().spec());
-  dict->SetInteger(keys::kFrameIdKey,
-                   details->is_main_frame ? 0 : details->entry->page_id());
+                  details->url().spec());
+  dict->SetInteger(keys::kFrameIdKey, 0);
   dict->SetString(keys::kTransitionTypeKey,
                   PageTransition::CoreTransitionString(
-                      details->entry->transition_type()));
+                      details->transition_type()));
   dict->SetString(keys::kTransitionQualifiersKey,
                   PageTransition::QualifierString(
-                      details->entry->transition_type()));
-  dict->SetReal(keys::kTimeStampKey, base::Time::Now().ToDoubleT());
+                      details->transition_type()));
+  dict->SetReal(keys::kTimeStampKey,
+                (base::Time::Now() - base::Time::UnixEpoch()).InMilliseconds());
   args.Append(dict);
 
   std::string json_args;
@@ -74,6 +111,27 @@ void ExtensionWebNavigationEventRouter::NavEntryCommitted(
   DispatchEvent(controller->profile(), keys::kOnCommitted, json_args);
 }
 
+void ExtensionWebNavigationEventRouter::FailProvisionalLoadWithError(
+    NavigationController* controller,
+    ProvisionalLoadDetails* details) {
+  ListValue args;
+  DictionaryValue* dict = new DictionaryValue();
+  dict->SetInteger(keys::kTabIdKey,
+                   ExtensionTabUtil::GetTabId(controller->tab_contents()));
+  dict->SetString(keys::kUrlKey,
+                  details->url().spec());
+  dict->SetInteger(keys::kFrameIdKey, 0);
+  dict->SetString(keys::kErrorKey,
+                  std::string(net::ErrorToString(details->error_code())));
+  dict->SetReal(keys::kTimeStampKey,
+                (base::Time::Now() - base::Time::UnixEpoch()).InMilliseconds());
+  args.Append(dict);
+
+  std::string json_args;
+  base::JSONWriter::Write(&args, false, &json_args);
+  DispatchEvent(controller->profile(), keys::kOnErrorOccurred, json_args);
+}
+
 void ExtensionWebNavigationEventRouter::DispatchEvent(
     Profile* profile,
     const char* event_name,
diff --git a/chrome/browser/extensions/extension_webnavigation_api.h b/chrome/browser/extensions/extension_webnavigation_api.h
index 77182e1..95ba032 100644
--- a/chrome/browser/extensions/extension_webnavigation_api.h
+++ b/chrome/browser/extensions/extension_webnavigation_api.h
@@ -12,10 +12,13 @@
 
 #include "base/singleton.h"
 #include "chrome/browser/extensions/extension_function.h"
-#include "chrome/browser/tab_contents/navigation_controller.h"
+#include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
+class NavigationController;
+class ProvisionalLoadDetails;
+
 // Observes navigation notifications and routes them as events to the extension
 // system.
 class ExtensionWebNavigationEventRouter : public NotificationObserver {
@@ -36,11 +39,23 @@ class ExtensionWebNavigationEventRouter : public NotificationObserver {
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
-  // Handler for the NAV_ENTRY_COMMITTED event. The method takes the details of
-  // such an event and constructs a suitable JSON formatted extension event
-  // from it.
-  void NavEntryCommitted(NavigationController* controller,
-                         NavigationController::LoadCommittedDetails* details);
+  // Handler for the FRAME_PROVISIONAL_LOAD_START event. The method takes the
+  // details of such an event and constructs a suitable JSON formatted extension
+  // event from it.
+  void FrameProvisionalLoadStart(NavigationController* controller,
+                                 ProvisionalLoadDetails* details);
+
+  // Handler for the FRAME_PROVISIONAL_LOAD_COMMITTED event. The method takes
+  // the details of such an event and constructs a suitable JSON formatted
+  // extension event from it.
+  void FrameProvisionalLoadCommitted(NavigationController* controller,
+                                     ProvisionalLoadDetails* details);
+
+  // Handler for the FAIL_PROVISIONAL_LOAD_WITH_ERROR event. The method takes
+  // the details of such an event and constructs a suitable JSON formatted
+  // extension event from it.
+  void FailProvisionalLoadWithError(NavigationController* controller,
+                                    ProvisionalLoadDetails* details);
 
   // This method dispatches events to the extension message service.
   void DispatchEvent(Profile* context,
diff --git a/chrome/browser/tab_contents/provisional_load_details.cc b/chrome/browser/tab_contents/provisional_load_details.cc
index 3bea977..e1e85d2 100644
--- a/chrome/browser/tab_contents/provisional_load_details.cc
+++ b/chrome/browser/tab_contents/provisional_load_details.cc
@@ -13,6 +13,7 @@ ProvisionalLoadDetails::ProvisionalLoadDetails(bool is_main_frame,
                                                const std::string& security_info,
                                                bool is_content_filtered)
       : error_code_(net::OK),
+        transition_type_(PageTransition::LINK),
         url_(url),
         is_main_frame_(is_main_frame),
         is_in_page_navigation_(is_in_page_navigation),
diff --git a/chrome/browser/tab_contents/provisional_load_details.h b/chrome/browser/tab_contents/provisional_load_details.h
index 92ac9b1..2073db0 100644
--- a/chrome/browser/tab_contents/provisional_load_details.h
+++ b/chrome/browser/tab_contents/provisional_load_details.h
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "chrome/common/page_transition_types.h"
 #include "googleurl/src/gurl.h"
 
 // This class captures some of the information associated to the provisional
@@ -32,6 +33,13 @@ class ProvisionalLoadDetails {
   void set_error_code(int error_code) { error_code_ = error_code; }
   int error_code() const { return error_code_; }
 
+  void set_transition_type(PageTransition::Type transition_type) {
+    transition_type_ = transition_type;
+  }
+  PageTransition::Type transition_type() const {
+    return transition_type_;
+  }
+
   const GURL& url() const { return url_; }
 
   bool main_frame() const { return is_main_frame_; }
@@ -50,6 +58,7 @@ class ProvisionalLoadDetails {
 
  private:
   int error_code_;
+  PageTransition::Type transition_type_;
   GURL url_;
   bool is_main_frame_;
   bool is_in_page_navigation_;
diff --git a/chrome/browser/tab_contents/tab_contents.cc b/chrome/browser/tab_contents/tab_contents.cc
index 67428ce..1d702bd 100644
--- a/chrome/browser/tab_contents/tab_contents.cc
+++ b/chrome/browser/tab_contents/tab_contents.cc
@@ -2452,6 +2452,30 @@ void TabContents::DidNavigate(RenderViewHost* rvh,
   bool did_navigate = controller_.RendererDidNavigate(
       params, extra_invalidate_flags, &details);
 
+  // Send notification about committed provisional loads. This notification is
+  // different from the NAV_ENTRY_COMMITTED notification which doesn't include
+  // the actual URL navigated to and isn't sent for AUTO_SUBFRAME navigations.
+  if (details.type != NavigationType::NAV_IGNORE) {
+    ProvisionalLoadDetails load_details(details.is_main_frame,
+                                        details.is_in_page,
+                                        params.url, std::string(), false);
+    load_details.set_transition_type(params.transition);
+    // Whether or not a page transition was triggered by going backward or
+    // forward in the history is only stored in the navigation controller's
+    // entry list.
+    if (did_navigate &&
+        (controller_.GetActiveEntry()->transition_type() &
+            PageTransition::FORWARD_BACK)) {
+      load_details.set_transition_type(
+          params.transition | PageTransition::FORWARD_BACK);
+    }
+    NotificationService::current()->Notify(
+        NotificationType::FRAME_PROVISIONAL_LOAD_COMMITTED,
+        Source<NavigationController>(&controller_),
+        Details<ProvisionalLoadDetails>(&load_details));
+
+  }
+
   // Update history. Note that this needs to happen after the entry is complete,
   // which WillNavigate[Main,Sub]Frame will do before this function is called.
   if (params.should_update_history) {