Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/ui/views/omnibox/omnibox_view_views.cc

 // Copyright (c) 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/ui/views/omnibox/omnibox_view_views.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 206 matching lines @@
                                    bool popup_window_mode,
                                    LocationBarView* location_bar)
     : OmniboxView(profile, controller, toolbar_model, command_updater),
       textfield_(NULL),
       popup_window_mode_(popup_window_mode),
       security_level_(ToolbarModel::NONE),
       ime_composing_before_change_(false),
       delete_at_end_pressed_(false),
       location_bar_view_(location_bar),
       ime_candidate_window_open_(false),
-      select_all_on_mouse_release_(false) {
+      select_all_on_mouse_release_(false),
+      visible_caret_color_(SK_ColorBLACK) {
 }
 
 OmniboxViewViews::~OmniboxViewViews() {
 #if defined(OS_CHROMEOS)
   chromeos::input_method::InputMethodManager::GetInstance()->
       RemoveCandidateWindowObserver(this);
 #endif
 
   // Explicitly teardown members which have a reference to us.  Just to be safe
   // we want them to be destroyed before destroying any other internal state.
@@ skipping 123 matching lines @@
     model()->OnControlKeyChanged(false);
     return true;
   }
   return false;
 }
 
 void OmniboxViewViews::HandleMousePressEvent(const ui::MouseEvent& event) {
   select_all_on_mouse_release_ =
       (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
       !textfield_->HasFocus();
+  // Restore caret visibility whenever the user clicks in the the omnibox. This
+  // is not always covered by OnSetFocus() because when clicking while the
+  // omnibox has invisible focus does not trigger a new OnSetFocus() call.
+  model()->SetCaretVisibility(true);
 }
 
 void OmniboxViewViews::HandleMouseDragEvent(const ui::MouseEvent& event) {
   select_all_on_mouse_release_ = false;
 }
 
 void OmniboxViewViews::HandleMouseReleaseEvent(const ui::MouseEvent& event) {
   if ((event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
       select_all_on_mouse_release_) {
     // Select all in the reverse direction so as not to scroll the caret
@@ skipping 57 matching lines @@
 std::string OmniboxViewViews::GetClassName() const {
   return kViewClassName;
 }
 
 void OmniboxViewViews::OnBoundsChanged(const gfx::Rect& previous_bounds) {
   if (popup_view_->IsOpen())
     popup_view_->UpdatePopupAppearance();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// OmniboxViewViews, AutocopmleteEditView implementation:
+// OmniboxViewViews, OmniboxView implementation:
 
 void OmniboxViewViews::SaveStateToTab(WebContents* tab) {
   DCHECK(tab);
 
   // We don't want to keep the IME status, so force quit the current
   // session here.  It may affect the selection status, so order is
   // also important.
   if (textfield_->IsIMEComposing()) {
     textfield_->GetTextInputClient()->ConfirmCompositionText();
     textfield_->GetInputMethod()->CancelComposition(textfield_);
@@ skipping 108 matching lines @@
   // the text, or in the middle of composition.
   ui::Range sel;
   textfield_->GetSelectedRange(&sel);
   bool no_inline_autocomplete =
       sel.GetMax() < GetTextLength() || textfield_->IsIMEComposing();
 
   model()->StartAutocomplete(!sel.is_empty(), no_inline_autocomplete);
 }
 
 void OmniboxViewViews::SetFocus() {
+  // Restore caret visibility if focused explicitly. We need to do this here
+  // because if we already have invisible focus, the RequestFocus() call below
+  // will short-circuit, preventing us from reaching
+  // OmniboxEditModel::OnSetFocus(), which handles restoring visibility when we
+  // didn't previously have focus.
+  model()->SetCaretVisibility(true);
   // In views-implementation, the focus is on textfield rather than OmniboxView.
   textfield_->RequestFocus();
 }
 
+void OmniboxViewViews::ApplyCaretVisibility() {
+  if (textfield_->cursor_color() != textfield_->background_color())
+    visible_caret_color_ = textfield_->cursor_color();
+  // Setting the color of the text cursor (caret) to the background color
+  // effectively hides it.
+  textfield_->SetCursorColor(model()->is_caret_visible() ?
+      visible_caret_color_ : textfield_->background_color());
+}
+
 void OmniboxViewViews::OnTemporaryTextMaybeChanged(
     const string16& display_text,
     bool save_original_selection) {
   if (save_original_selection)
     textfield_->GetSelectedRange(&saved_temporary_selection_);
 
   SetWindowTextAndCaretPos(display_text, display_text.length(), false, true);
 }
 
 bool OmniboxViewViews::OnInlineAutocompleteTextMaybeChanged(
@@ skipping 343 matching lines @@
   if (!text.empty()) {
     // Record this paste, so we can do different behavior.
     model()->on_paste();
     // Force a Paste operation to trigger the text_changed code in
     // OnAfterPossibleChange(), even if identical contents are pasted into the
     // text box.
     text_before_change_.clear();
     textfield_->ReplaceSelection(text);
   }
 }