Instant API: tell page whether the browser is capturing key strokes.

chrome/browser/instant/instant_controller.cc

 // Copyright 2012 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/instant/instant_controller.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 134 matching lines @@
 
 InstantController::InstantController(chrome::BrowserInstantController* browser,
                                      bool extended_enabled)
     : browser_(browser),
       extended_enabled_(extended_enabled),
       instant_enabled_(false),
       model_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
       last_verbatim_(false),
       last_transition_type_(content::PAGE_TRANSITION_LINK),
       last_match_was_search_(false),
-      is_omnibox_focused_(false) {
+      is_omnibox_focused_(false),
+      is_omnibox_invisibly_focused_(false) {
 }
 
 InstantController::~InstantController() {
 }
 
 bool InstantController::Update(const AutocompleteMatch& match,
                                const string16& user_text,
                                const string16& full_text,
                                const bool verbatim,
                                const bool user_input_in_progress,
@@ skipping 304 matching lines @@
   // Try to create another loader immediately so that it is ready for the next
   // user interaction.
   CreateDefaultLoader();
 
   return true;
 }
 
 void InstantController::OmniboxLostFocus(gfx::NativeView view_gaining_focus) {
   DVLOG(1) << "OmniboxLostFocus";
   is_omnibox_focused_ = false;
+  is_omnibox_invisibly_focused_ = false;
 
   if (!extended_enabled_ && !instant_enabled_)
     return;
 
   // If the preview isn't showing search suggestions, nothing to do. The check
   // for GetPreviewContents() (which normally is redundant, given IsCurrent())
   // is to handle the case when we get here during a commit.
   if (!IsCurrent() || !GetPreviewContents()) {
     OnStaleLoader();
     return;
   }
 
+  loader_->OnStoppedCapturingKeyStrokes();

[Jered, 2012/11/28 17:50:16]

OnStopKeyCapture

[samarth, 2012/11/28 19:33:09]

Now just OnKeyCaptureChange.

+
 #if defined(OS_MACOSX)
   if (!loader_->IsPointerDownFromActivate())
     Hide(true);
 #else
   if (IsViewInContents(GetViewGainingFocus(view_gaining_focus),
                        GetPreviewContents()->web_contents()))
     CommitIfCurrent(INSTANT_COMMIT_FOCUS_LOST);
   else
     Hide(true);
 #endif
 }
 
-void InstantController::OmniboxGotFocus() {
+void InstantController::OmniboxGotFocus(bool focus_is_visible) {
   DVLOG(1) << "OmniboxGotFocus";
   is_omnibox_focused_ = true;
+  is_omnibox_invisibly_focused_ = !focus_is_visible;
 
   if (!extended_enabled_ && !instant_enabled_)
     return;
 
+  if (is_omnibox_invisibly_focused_)
+    loader_->OnStartedCapturingKeyStrokes();

[Jered, 2012/11/28 17:50:16]

OnStartKeyCapture

[samarth, 2012/11/28 19:33:09]

Now just OnKeyCaptureChange.

[samarth, 2012/11/28 19:33:09]

Now just OnKeyCaptureChange.

+  else
+    loader_->OnStoppedCapturingKeyStrokes();
+
   if (!GetPreviewContents())
     CreateDefaultLoader();
 }
 
 void InstantController::SearchModeChanged(
     const chrome::search::Mode& old_mode,
     const chrome::search::Mode& new_mode) {
   if (!extended_enabled_)
     return;
 
@@ skipping 183 matching lines @@
     DeleteLoader();
 
   if (!GetPreviewContents()) {
     loader_.reset(new InstantLoader(this, instant_url, active_tab));
     loader_->Init();
 
     // Ensure the searchbox API has the correct theme-related info and context.
     if (extended_enabled_) {
       browser_->UpdateThemeInfoForPreview();
       loader_->SearchModeChanged(search_mode_);
+      if (is_omnibox_invisibly_focused_)
+        loader_->OnStartedCapturingKeyStrokes();
+      else
+        loader_->OnStoppedCapturingKeyStrokes();
     }
 
     // Reset the loader timer.
     stale_loader_timer_.Start(
         FROM_HERE,
         base::TimeDelta::FromMilliseconds(kStaleLoaderTimeoutMS), this,
         &InstantController::OnStaleLoader);
   }
 
   return true;
@@ skipping 170 matching lines @@
   }
 
   std::map<std::string, int>::const_iterator iter =
       blacklisted_urls_.find(*instant_url);
   if (iter != blacklisted_urls_.end() &&
       iter->second > kMaxInstantSupportFailures)
     return false;
 
   return true;
 }