Instant: Use only one hidden WebContents per profile.

chrome/browser/instant/instant_page.cc

 // Copyright 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/browser/instant/instant_page.h"
 
-#include "base/utf_string_conversions.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/browser/instant/instant_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/instant_messages.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/font.h"
 
 InstantPage::Delegate::~Delegate() {
 }
 
+InstantPage::InstantPage(Delegate* delegate, InstantService* service)
+    : delegate_(delegate),
+      service_(service),
+      routing_id_(MSG_ROUTING_NONE),
+      supports_instant_(false),
+      navigated_after_change_(false) {
+}
+
 InstantPage::~InstantPage() {
 }
 
-void InstantPage::Update(const string16& text,
-                         size_t selection_start,
-                         size_t selection_end,
-                         bool verbatim) {
-  Send(new ChromeViewMsg_SearchBoxChange(routing_id(), text, verbatim,
-                                         selection_start, selection_end));
-}
-
-void InstantPage::Submit(const string16& text) {
-  Send(new ChromeViewMsg_SearchBoxSubmit(routing_id(), text));
-}
-
-void InstantPage::Cancel(const string16& text) {
-  Send(new ChromeViewMsg_SearchBoxCancel(routing_id(), text));
-}
-
-void InstantPage::SetPopupBounds(const gfx::Rect& bounds) {
-  Send(new ChromeViewMsg_SearchBoxPopupResize(routing_id(), bounds));
-}
-
-void InstantPage::SetOmniboxBounds(const gfx::Rect& bounds) {
-  Send(new ChromeViewMsg_SearchBoxMarginChange(
-      routing_id(), bounds.x(), bounds.width()));
-}
-
-void InstantPage::InitializeFonts() {
-  // TODO(sail) Remove this once the Mac omnibox font size is updated.
-#if defined(OS_MACOSX)
-  ui::ResourceBundle::FontStyle font_style = ui::ResourceBundle::BaseFont;
-#else
-  ui::ResourceBundle::FontStyle font_style = ui::ResourceBundle::MediumFont;
-#endif
-  const gfx::Font& omnibox_font =
-      ui::ResourceBundle::GetSharedInstance().GetFont(font_style);
-  string16 omnibox_font_name = UTF8ToUTF16(omnibox_font.GetFontName());
-  size_t omnibox_font_size = omnibox_font.GetFontSize();
-  Send(new ChromeViewMsg_SearchBoxFontInformation(
-      routing_id(), omnibox_font_name, omnibox_font_size));
-}
-
-void InstantPage::DetermineIfPageSupportsInstant() {
-  Send(new ChromeViewMsg_DetermineIfPageSupportsInstant(routing_id()));
-}
-
-void InstantPage::SendAutocompleteResults(
-    const std::vector<InstantAutocompleteResult>& results) {
-  Send(new ChromeViewMsg_SearchBoxAutocompleteResults(routing_id(), results));
-}
-
-void InstantPage::UpOrDownKeyPressed(int count) {
-  Send(new ChromeViewMsg_SearchBoxUpOrDownKeyPressed(routing_id(), count));
-}
-
-void InstantPage::CancelSelection(const string16& user_text) {
-  Send(new ChromeViewMsg_SearchBoxCancelSelection(routing_id(), user_text));
-}
-
-void InstantPage::SendThemeBackgroundInfo(
-    const ThemeBackgroundInfo& theme_info) {
-  Send(new ChromeViewMsg_SearchBoxThemeChanged(routing_id(), theme_info));
-}
-
-void InstantPage::SetDisplayInstantResults(bool display_instant_results) {
-  Send(new ChromeViewMsg_SearchBoxSetDisplayInstantResults(
-      routing_id(), display_instant_results));
-}
-
-void InstantPage::KeyCaptureChanged(bool is_key_capture_enabled) {
-  Send(new ChromeViewMsg_SearchBoxKeyCaptureChanged(
-      routing_id(), is_key_capture_enabled));
-}
-
-void InstantPage::SendMostVisitedItems(
-    const std::vector<MostVisitedItem>& items) {
-  Send(new ChromeViewMsg_InstantMostVisitedItemsChanged(routing_id(), items));
-}
-
-InstantPage::InstantPage(Delegate* delegate)
-    : delegate_(delegate),
-      supports_instant_(false) {
-}
-
 void InstantPage::SetContents(content::WebContents* contents) {
   Observe(contents);
 }
 
-bool InstantPage::ShouldProcessRenderViewCreated() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessRenderViewGone() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessAboutToNavigateMainFrame() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessSetSuggestions() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessShowInstantOverlay() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessStartCapturingKeyStrokes() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessStopCapturingKeyStrokes() {
-  return false;
-}
-
-bool InstantPage::ShouldProcessNavigateToURL() {
-  return false;
-}
-
-void InstantPage::RenderViewCreated(content::RenderViewHost* render_view_host) {
-  if (ShouldProcessRenderViewCreated())
-    delegate_->InstantPageRenderViewCreated(contents());
+void InstantPage::DetermineInstantSupport() {
+  SendMessage(scoped_ptr<IPC::Message>(
+      new ChromeViewMsg_SearchBoxDetermineInstantSupport(routing_id())));
+}
+
+void InstantPage::Change(const string16& query,
+                         bool verbatim,
+                         size_t selection_start,
+                         size_t selection_end) {
+  navigated_after_change_ = false;
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxChange(
+      routing_id(), query, verbatim, selection_start, selection_end)));
+}
+
+void InstantPage::Submit(const string16& query) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxSubmit(
+      routing_id(), query)));
+}
+
+void InstantPage::AutocompleteResults(
+    const std::vector<InstantAutocompleteResult>& results) {
+  SendMessage(scoped_ptr<IPC::Message>(
+      new ChromeViewMsg_SearchBoxAutocompleteResults(routing_id(), results)));
+}
+
+void InstantPage::Select(int count) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxSelect(
+      routing_id(), count)));
+}
+
+void InstantPage::Cancel(const string16& query) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxCancel(
+      routing_id(), query)));
+}
+
+void InstantPage::Blur(const string16& query) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxBlur(
+      routing_id(), query)));
+}
+
+void InstantPage::PopupBounds(const gfx::Rect& bounds) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxPopupBounds(
+      routing_id(), bounds)));
+}
+
+void InstantPage::OmniboxBounds(const gfx::Rect& bounds) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxOmniboxBounds(
+      routing_id(), bounds)));
+}
+
+void InstantPage::KeyCaptureChanged(bool is_key_capture_enabled) {
+  SendMessage(scoped_ptr<IPC::Message>(
+      new ChromeViewMsg_SearchBoxKeyCaptureChanged(routing_id(),
+                                                   is_key_capture_enabled)));
+}
+
+void InstantPage::DisplayInstantResults(bool display_instant_results) {
+  SendMessage(scoped_ptr<IPC::Message>(
+      new ChromeViewMsg_SearchBoxDisplayInstantResults(
+          routing_id(), display_instant_results)));
+}
+
+void InstantPage::ThemeChanged(const ThemeBackgroundInfo& theme_info) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxThemeChanged(
+      routing_id(), theme_info)));
+}
+
+void InstantPage::FontChanged(const string16& font, size_t font_size) {
+  SendMessage(scoped_ptr<IPC::Message>(new ChromeViewMsg_SearchBoxFontChanged(
+      routing_id(), font, font_size)));
+}
+
+void InstantPage::MostVisitedItems(const std::vector<MostVisitedItem>& items) {
+  SendMessage(scoped_ptr<IPC::Message>(
+      new ChromeViewMsg_SearchBoxMostVisitedItems(routing_id(), items)));
+}
+
+void InstantPage::RenderViewGone(base::TerminationStatus /* status */) {
+  delegate_->RenderViewGone(contents());
+}
+
+void InstantPage::DidNavigateMainFrame(
+      const content::LoadCommittedDetails& /* details */,
+      const content::FrameNavigateParams& /* params */) {
+  navigated_after_change_ = true;
+  if (routing_id_ != routing_id()) {
+    routing_id_ = routing_id();
+    delegate_->InitSearchBox(contents());
+  }
 }
 
 void InstantPage::DidFinishLoad(
-    int64 /* frame_id */,
-    const GURL& /* validated_url */,
-    bool is_main_frame,
-    content::RenderViewHost* /* render_view_host */) {
+      int64 /* frame_id */,
+      const GURL& /* validated_url */,
+      bool is_main_frame,
+      content::RenderViewHost* /* render_view_host */) {
   if (is_main_frame && !supports_instant_)
-    DetermineIfPageSupportsInstant();
+    DetermineInstantSupport();
 }
 
 bool InstantPage::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(InstantPage, message)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SetSuggestions, OnSetSuggestions)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantSupportDetermined,
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxInstantSupportDetermined,
                         OnInstantSupportDetermined)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_ShowInstantOverlay,
-                        OnShowInstantOverlay)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_StartCapturingKeyStrokes,
-                        OnStartCapturingKeyStrokes);
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_StopCapturingKeyStrokes,
-                        OnStopCapturingKeyStrokes);
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxNavigate,
-                        OnSearchBoxNavigate);
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantDeleteMostVisitedItem,
-                        OnDeleteMostVisitedItem);
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantUndoMostVisitedDeletion,
-                        OnUndoMostVisitedDeletion);
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantUndoAllMostVisitedDeletions,
-                        OnUndoAllMostVisitedDeletions);
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxSetSuggestion,
+                        OnSetSuggestion)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxNavigateToURL,
+                        OnNavigateToURL)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxShowOverlay, OnShowOverlay)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxStartKeyCapture,
+                        OnStartKeyCapture)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxStopKeyCapture,
+                        OnStopKeyCapture)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxDeleteMostVisitedItem,
+                        OnDeleteMostVisitedItem)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxUndoMostVisitedItemDeletion,
+                        OnUndoMostVisitedItemDeletion)
+    IPC_MESSAGE_HANDLER(
+        ChromeViewHostMsg_SearchBoxUndoAllMostVisitedItemDeletions,
+        OnUndoAllMostVisitedItemDeletions)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-void InstantPage::RenderViewGone(base::TerminationStatus /* status */) {
-  if (ShouldProcessRenderViewGone())
-    delegate_->InstantPageRenderViewGone(contents());
-}
-
-void InstantPage::DidCommitProvisionalLoadForFrame(
-    int64 /* frame_id */,
-    bool is_main_frame,
-    const GURL& url,
-    content::PageTransition /* transition_type */,
-    content::RenderViewHost* /* render_view_host */) {
-  if (is_main_frame && ShouldProcessAboutToNavigateMainFrame())
-    delegate_->InstantPageAboutToNavigateMainFrame(contents(), url);
-}
-
-void InstantPage::OnSetSuggestions(
-    int page_id,
-    const std::vector<InstantSuggestion>& suggestions) {
-  if (contents()->IsActiveEntry(page_id)) {
-    OnInstantSupportDetermined(page_id, true);
-    if (ShouldProcessSetSuggestions())
-      delegate_->SetSuggestions(contents(), suggestions);
-  }
+void InstantPage::SendMessage(scoped_ptr<IPC::Message> message) {
+  if (!contents())
+    return;
+
+  content::RenderProcessHost* process = contents()->GetRenderProcessHost();
+  if (!process)
+    return;
+
+  if (service_->IsInstantProcess(process->GetID()))
+    Send(message.release());
 }
 
 void InstantPage::OnInstantSupportDetermined(int page_id,
                                              bool supports_instant) {
-  if (!contents()->IsActiveEntry(page_id) || supports_instant_) {
-    // Nothing to do if the page already supports Instant.
-    return;
-  }
-
-  supports_instant_ = supports_instant;
-  delegate_->InstantSupportDetermined(contents(), supports_instant);
-
-  // If the page doesn't support Instant, stop listening to it.
-  if (!supports_instant)
-    Observe(NULL);
-}
-
-void InstantPage::OnShowInstantOverlay(int page_id,
-                                       InstantShownReason reason,
-                                       int height,
-                                       InstantSizeUnits units) {
-  if (contents()->IsActiveEntry(page_id)) {
-    OnInstantSupportDetermined(page_id, true);
-    if (ShouldProcessShowInstantOverlay())
-      delegate_->ShowInstantOverlay(contents(), reason, height, units);
-  }
-}
-
-void InstantPage::OnStartCapturingKeyStrokes(int page_id) {
-  if (contents()->IsActiveEntry(page_id)) {
-    OnInstantSupportDetermined(page_id, true);
-    if (ShouldProcessStartCapturingKeyStrokes())
-      delegate_->StartCapturingKeyStrokes(contents());
-  }
-}
-
-void InstantPage::OnStopCapturingKeyStrokes(int page_id) {
-  if (contents()->IsActiveEntry(page_id)) {
-    OnInstantSupportDetermined(page_id, true);
-    if (ShouldProcessStopCapturingKeyStrokes())
-      delegate_->StopCapturingKeyStrokes(contents());
-  }
-}
-
-void InstantPage::OnSearchBoxNavigate(int page_id,
-                                      const GURL& url,
-                                      content::PageTransition transition,
-                                      WindowOpenDisposition disposition) {
-  if (contents()->IsActiveEntry(page_id)) {
-    OnInstantSupportDetermined(page_id, true);
-    if (ShouldProcessNavigateToURL())
-      delegate_->NavigateToURL(contents(), url, transition, disposition);
-  }
-}
-
-void InstantPage::OnDeleteMostVisitedItem(const GURL& url) {
-  delegate_->DeleteMostVisitedItem(url);
-}
-
-void InstantPage::OnUndoMostVisitedDeletion(const GURL& url) {
-  delegate_->UndoMostVisitedDeletion(url);
-}
-
-void InstantPage::OnUndoAllMostVisitedDeletions() {
-  delegate_->UndoAllMostVisitedDeletions();
-}
+  if (contents()->IsActiveEntry(page_id) && !supports_instant_) {
+    supports_instant_ = supports_instant;
+    delegate_->InstantSupportDetermined(contents());
+  }
+}
+
+void InstantPage::OnSetSuggestion(int page_id,
+                                  const InstantSuggestion& suggestion) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->SetSuggestion(contents(), suggestion);
+  }
+}
+
+void InstantPage::OnNavigateToURL(int page_id,
+                                  const GURL& url,
+                                  content::PageTransition transition,
+                                  WindowOpenDisposition disposition) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->NavigateToURL(contents(), url, transition, disposition);
+  }
+}
+
+void InstantPage::OnShowOverlay(int page_id,
+                                int height,
+                                bool is_height_in_pixels) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->ShowOverlay(contents(), height, is_height_in_pixels);
+  }
+}
+
+void InstantPage::OnStartKeyCapture(int page_id) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->StartKeyCapture(contents());
+  }
+}
+
+void InstantPage::OnStopKeyCapture(int page_id) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->StopKeyCapture(contents());
+  }
+}
+
+void InstantPage::OnDeleteMostVisitedItem(int page_id, const GURL& url) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->DeleteMostVisitedItem(contents(), url);
+  }
+}
+
+void InstantPage::OnUndoMostVisitedItemDeletion(int page_id, const GURL& url) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->UndoMostVisitedItemDeletion(contents(), url);
+  }
+}
+
+void InstantPage::OnUndoAllMostVisitedItemDeletions(int page_id) {
+  if (contents()->IsActiveEntry(page_id)) {
+    OnInstantSupportDetermined(page_id, true);
+    delegate_->UndoAllMostVisitedItemDeletions(contents());
+  }
+}