Instant: Use only one hidden WebContents per profile.

chrome/renderer/searchbox/searchbox.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/renderer/searchbox/searchbox.h"
 
-#include "base/utf_string_conversions.h"
-#include "chrome/common/render_messages.h"
-#include "chrome/common/url_constants.h"
+#include "chrome/common/instant_messages.h"
 #include "chrome/renderer/searchbox/searchbox_extension.h"
 #include "content/public/renderer/render_view.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
-namespace {
-
-// Prefix for a thumbnail URL.
-const char kThumbnailUrlPrefix[] = "chrome-search://thumb/";
-
-// Prefix for a thumbnail URL.
-const char kFaviconUrlPrefix[] = "chrome-search://favicon/";
-
-}
-
 SearchBox::SearchBox(content::RenderView* render_view)
     : content::RenderViewObserver(render_view),
       content::RenderViewObserverTracker<SearchBox>(render_view),
       verbatim_(false),
       selection_start_(0),
-      selection_end_(0),
-      results_base_(0),
-      start_margin_(0),
-      last_results_base_(0),
-      is_key_capture_enabled_(false),
-      display_instant_results_(false),
-      omnibox_font_size_(0),
-      last_restricted_id_(0) {
+      selection_end_(0) {
 }
 
 SearchBox::~SearchBox() {
 }
 
-void SearchBox::SetSuggestions(
-    const std::vector<InstantSuggestion>& suggestions) {
-  if (!suggestions.empty() &&
-      suggestions[0].behavior == INSTANT_COMPLETE_REPLACE) {
-    query_ = suggestions[0].text;
-    verbatim_ = true;
-    selection_start_ = selection_end_ = query_.size();
-  }
-  // Explicitly allow empty vector to be sent to the browser.
-  render_view()->Send(new ChromeViewHostMsg_SetSuggestions(
-      render_view()->GetRoutingID(), render_view()->GetPageId(), suggestions));
-}
-
-void SearchBox::ShowInstantOverlay(InstantShownReason reason,
-                                   int height,
-                                   InstantSizeUnits units) {
-  render_view()->Send(new ChromeViewHostMsg_ShowInstantOverlay(
-      render_view()->GetRoutingID(), render_view()->GetPageId(), reason,
-      height, units));
-}
-
-void SearchBox::FocusOmnibox() {
-  render_view()->Send(new ChromeViewHostMsg_FocusOmnibox(
-      render_view()->GetRoutingID(), render_view()->GetPageId()));
-}
-
-void SearchBox::StartCapturingKeyStrokes() {
-  render_view()->Send(new ChromeViewHostMsg_StartCapturingKeyStrokes(
-      render_view()->GetRoutingID(), render_view()->GetPageId()));
-}
-
-void SearchBox::StopCapturingKeyStrokes() {
-  render_view()->Send(new ChromeViewHostMsg_StopCapturingKeyStrokes(
-      render_view()->GetRoutingID(), render_view()->GetPageId()));
-}
-
-void SearchBox::NavigateToURL(const GURL& url,
-                              content::PageTransition transition,
-                              WindowOpenDisposition disposition) {
-  render_view()->Send(new ChromeViewHostMsg_SearchBoxNavigate(
-      render_view()->GetRoutingID(), render_view()->GetPageId(),
-      url, transition, disposition));
-}
-
-void SearchBox::DeleteMostVisitedItem(int restrict_id) {
-  string16 url = RestrictedIdToURL(restrict_id);
-  render_view()->Send(new ChromeViewHostMsg_InstantDeleteMostVisitedItem(
-      render_view()->GetRoutingID(), GURL(url)));
-}
-
-void SearchBox::UndoMostVisitedDeletion(int restrict_id) {
-  string16 url = RestrictedIdToURL(restrict_id);
-  render_view()->Send(new ChromeViewHostMsg_InstantUndoMostVisitedDeletion(
-      render_view()->GetRoutingID(), GURL(url)));
-}
-
-void SearchBox::UndoAllMostVisitedDeletions() {
-  render_view()->Send(new ChromeViewHostMsg_InstantUndoAllMostVisitedDeletions(
-      render_view()->GetRoutingID()));
-}
-
-int SearchBox::GetStartMargin() const {
-  return static_cast<int>(start_margin_ / GetZoom());
-}
-
 gfx::Rect SearchBox::GetPopupBounds() const {
   double zoom = GetZoom();
   return gfx::Rect(static_cast<int>(popup_bounds_.x() / zoom),
                    static_cast<int>(popup_bounds_.y() / zoom),
                    static_cast<int>(popup_bounds_.width() / zoom),
                    static_cast<int>(popup_bounds_.height() / zoom));
 }
 
-const std::vector<InstantAutocompleteResult>&
-    SearchBox::GetAutocompleteResults() {
-  // Remember the last requested autocomplete_results to account for race
-  // conditions between autocomplete providers returning new data and the user
-  // clicking on a suggestion.
-  last_autocomplete_results_ = autocomplete_results_;
-  last_results_base_ = results_base_;
-  return autocomplete_results_;
-}
-
-const InstantAutocompleteResult* SearchBox::GetAutocompleteResultWithId(
-    size_t restricted_id) const {
-  if (restricted_id < last_results_base_ ||
-      restricted_id >= last_results_base_ + last_autocomplete_results_.size())
-    return NULL;
-  return &last_autocomplete_results_[restricted_id - last_results_base_];
-}
-
-const ThemeBackgroundInfo& SearchBox::GetThemeBackgroundInfo() {
-  return theme_info_;
+void SearchBox::SetSuggestion(const InstantSuggestion& suggestion) {
+  Send(new ChromeViewHostMsg_SearchBoxSetSuggestion(
+               routing_id(), render_view()->GetPageId(), suggestion));
 }
 
 bool SearchBox::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SearchBox, message)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxDetermineInstantSupport,
+                        OnDetermineInstantSupport)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxChange, OnChange)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSubmit, OnSubmit)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxCancel, OnCancel)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxPopupResize, OnPopupResize)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxMarginChange, OnMarginChange)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_DetermineIfPageSupportsInstant,
-                        OnDetermineIfPageSupportsInstant)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxAutocompleteResults,
-                        OnAutocompleteResults)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxUpOrDownKeyPressed,
-                        OnUpOrDownKeyPressed)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxCancelSelection,
-                        OnCancelSelection)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSetDisplayInstantResults,
-                        OnSetDisplayInstantResults)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxKeyCaptureChanged,
-                        OnKeyCaptureChange)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxThemeChanged,
-                        OnThemeChanged)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxFontInformation,
-                        OnFontInformationReceived)
-    IPC_MESSAGE_HANDLER(
-        ChromeViewMsg_SearchBoxGrantChromeSearchAccessFromOrigin,
-        OnGrantChromeSearchAccessFromOrigin)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_InstantMostVisitedItemsChanged,
-                        OnMostVisitedChanged)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxBlur, OnBlur)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxPopupBounds, OnPopupBounds)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-void SearchBox::DidClearWindowObject(WebKit::WebFrame* frame) {
-  extensions_v8::SearchBoxExtension::DispatchOnWindowReady(frame);
+void SearchBox::OnDetermineInstantSupport() {
+  bool supports_instant =
+      extensions_v8::SearchBoxExtension::DetermineInstantSupport(render_view());
+  Send(new ChromeViewHostMsg_SearchBoxInstantSupportDetermined(
+               routing_id(), render_view()->GetPageId(), supports_instant));
 }
 
 void SearchBox::OnChange(const string16& query,
                          bool verbatim,
                          size_t selection_start,
                          size_t selection_end) {
+  if (query_ == query && verbatim_ == verbatim &&
+      selection_start_ == selection_start && selection_end_ == selection_end)
+    return;
+
   query_ = query;
   verbatim_ = verbatim;
   selection_start_ = selection_start;
   selection_end_ = selection_end;
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnChange";
-    extensions_v8::SearchBoxExtension::DispatchChange(
-        render_view()->GetWebView()->mainFrame());
-  }
+  extensions_v8::SearchBoxExtension::Change(render_view());
 }
 
 void SearchBox::OnSubmit(const string16& query) {
   query_ = query;
   verbatim_ = true;
-  selection_start_ = selection_end_ = query_.size();
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnSubmit";
-    extensions_v8::SearchBoxExtension::DispatchSubmit(
-        render_view()->GetWebView()->mainFrame());
-  }
+  selection_start_ = query_.size();
+  selection_end_ = query_.size();
+  extensions_v8::SearchBoxExtension::Submit(render_view());
   Reset();
 }
 
-void SearchBox::OnCancel(const string16& query) {
+void SearchBox::OnBlur(const string16& query) {
   query_ = query;
   verbatim_ = true;
-  selection_start_ = selection_end_ = query_.size();
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnCancel";
-    extensions_v8::SearchBoxExtension::DispatchCancel(
-        render_view()->GetWebView()->mainFrame());
-  }
+  selection_start_ = query_.size();
+  selection_end_ = query_.size();
+  extensions_v8::SearchBoxExtension::Blur(render_view());
   Reset();
 }
 
-void SearchBox::OnPopupResize(const gfx::Rect& bounds) {
+void SearchBox::OnPopupBounds(const gfx::Rect& bounds) {
+  if (popup_bounds_ == bounds)
+    return;
+
   popup_bounds_ = bounds;
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnPopupResize";
-    extensions_v8::SearchBoxExtension::DispatchResize(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnMarginChange(int margin, int width) {
-  start_margin_ = margin;
-
-  // Override only the width parameter of the popup bounds.
-  popup_bounds_.set_width(width);
-
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    extensions_v8::SearchBoxExtension::DispatchMarginChange(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnDetermineIfPageSupportsInstant() {
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    bool result = extensions_v8::SearchBoxExtension::PageSupportsInstant(
-        render_view()->GetWebView()->mainFrame());
-    DVLOG(1) << render_view() << " PageSupportsInstant: " << result;
-    render_view()->Send(new ChromeViewHostMsg_InstantSupportDetermined(
-        render_view()->GetRoutingID(), render_view()->GetPageId(), result));
-  }
-}
-
-void SearchBox::OnAutocompleteResults(
-    const std::vector<InstantAutocompleteResult>& results) {
-  results_base_ += autocomplete_results_.size();
-  autocomplete_results_ = results;
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnAutocompleteResults";
-    extensions_v8::SearchBoxExtension::DispatchAutocompleteResults(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnUpOrDownKeyPressed(int count) {
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnKeyPress: " << count;
-    extensions_v8::SearchBoxExtension::DispatchUpOrDownKeyPress(
-        render_view()->GetWebView()->mainFrame(), count);
-  }
-}
-
-void SearchBox::OnCancelSelection(const string16& query) {
-  // TODO(sreeram): crbug.com/176101 The state reset below are somewhat wrong.
-  query_ = query;
-  verbatim_ = true;
-  selection_start_ = selection_end_ = query_.size();
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    DVLOG(1) << render_view() << " OnKeyPress ESC";
-    extensions_v8::SearchBoxExtension::DispatchEscKeyPress(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnKeyCaptureChange(bool is_key_capture_enabled) {
-  if (is_key_capture_enabled != is_key_capture_enabled_ &&
-      render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    is_key_capture_enabled_ = is_key_capture_enabled;
-    DVLOG(1) << render_view() << " OnKeyCaptureChange";
-    extensions_v8::SearchBoxExtension::DispatchKeyCaptureChange(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnSetDisplayInstantResults(bool display_instant_results) {
-  display_instant_results_ = display_instant_results;
-}
-
-void SearchBox::OnThemeChanged(const ThemeBackgroundInfo& theme_info) {
-  theme_info_ = theme_info;
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    extensions_v8::SearchBoxExtension::DispatchThemeChange(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-void SearchBox::OnFontInformationReceived(const string16& omnibox_font,
-                                          size_t omnibox_font_size) {
-  omnibox_font_ = omnibox_font;
-  omnibox_font_size_ = omnibox_font_size;
-}
-
-void SearchBox::OnGrantChromeSearchAccessFromOrigin(const GURL& origin_url) {
-  string16 chrome_search_scheme(ASCIIToUTF16(chrome::kChromeSearchScheme));
-  WebKit::WebSecurityPolicy::addOriginAccessWhitelistEntry(
-      origin_url,
-      chrome_search_scheme,
-      ASCIIToUTF16(chrome::kChromeUIFaviconHost),
-      false);
-  WebKit::WebSecurityPolicy::addOriginAccessWhitelistEntry(
-      origin_url,
-      chrome_search_scheme,
-      ASCIIToUTF16(chrome::kChromeUIThemeHost),
-      false);
-  WebKit::WebSecurityPolicy::addOriginAccessWhitelistEntry(
-      origin_url,
-      chrome_search_scheme,
-      ASCIIToUTF16(chrome::kChromeUIThumbnailHost),
-      false);
+  extensions_v8::SearchBoxExtension::PopupBounds(render_view());
 }
 
 double SearchBox::GetZoom() const {
   WebKit::WebView* web_view = render_view()->GetWebView();
   if (web_view) {
     double zoom = WebKit::WebView::zoomLevelToZoomFactor(web_view->zoomLevel());
     if (zoom != 0)
       return zoom;
   }
   return 1.0;
 }
 
 void SearchBox::Reset() {
   query_.clear();
   verbatim_ = false;
   selection_start_ = 0;
   selection_end_ = 0;
-  results_base_ = 0;
   popup_bounds_ = gfx::Rect();
-  start_margin_ = 0;
-  autocomplete_results_.clear();
-  is_key_capture_enabled_ = false;
-  theme_info_ = ThemeBackgroundInfo();
-  // Don't reset display_instant_results_ to prevent clearing it on committed
-  // results pages in extended mode. Otherwise resetting it is a no-op because
-  // a new loader is created when it changes; see crbug.com/164662.
-  // Also don't reset omnibox_font_ or omnibox_font_size_ since it never
-  // changes.
 }
-
-void SearchBox::OnMostVisitedChanged(
-    const std::vector<MostVisitedItem>& items) {
-  most_visited_items_ = items;
-
-  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
-    extensions_v8::SearchBoxExtension::DispatchMostVisitedChanged(
-        render_view()->GetWebView()->mainFrame());
-  }
-}
-
-const std::vector<MostVisitedItem>& SearchBox::GetMostVisitedItems() {
-  return most_visited_items_;
-}
-
-int SearchBox::UrlToRestrictedId(string16 url) {
-  if (url_to_restricted_id_map_[url])
-    return url_to_restricted_id_map_[url];
-
-  last_restricted_id_++;
-  url_to_restricted_id_map_[url] = last_restricted_id_;
-  restricted_id_to_url_map_[last_restricted_id_] = url;
-
-  return last_restricted_id_;
-}
-
-string16 SearchBox::RestrictedIdToURL(int id) {
-  return restricted_id_to_url_map_[id];
-}
-
-string16 SearchBox::GenerateThumbnailUrl(int id) {
-  std::ostringstream ostr;
-  ostr << kThumbnailUrlPrefix << id;
-  GURL url = GURL(ostr.str());
-  return UTF8ToUTF16(url.spec());
-}
-
-string16 SearchBox::GenerateFaviconUrl(int id) {
-  std::ostringstream ostr;
-  ostr << kFaviconUrlPrefix << id;
-  GURL url = GURL(ostr.str());
-  return UTF8ToUTF16(url.spec());
-}