InstantExtended: Committed NTP

chrome/browser/instant/instant_overlay.cc

+// Copyright 2012 The Chromium Authors. All rights reserved.

[dhollowa, 2013/01/22 22:34:58]

nit: 2013

+// 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_overlay.h"
+
+#include "base/supports_user_data.h"
+#include "chrome/browser/instant/instant_controller.h"
+#include "content/public/browser/web_contents.h"
+
+namespace {
+
+const int kStalePageTimeoutMS = 3 * 3600 * 1000;  // 3 hours

[dhollowa, 2013/01/22 22:34:58]

DRY violation.  Move to instant_page.h?

[samarth, 2013/01/25 21:08:40]

I was leaving open the possibility that ntp and overlay could have different
timeouts.  But we can do this if/when that ever happens.  Moved to
InstantLoader.

+
+int kUserDataKey;
+
+class InstantOverlayUserData : public base::SupportsUserData::Data {
+ public:
+  explicit InstantOverlayUserData(InstantOverlay* overlay)
+      : overlay_(overlay) {}
+
+  InstantOverlay* overlay() const { return overlay_; }
+
+ private:
+  ~InstantOverlayUserData() {}
+
+  InstantOverlay* const overlay_;
+
+  DISALLOW_COPY_AND_ASSIGN(InstantOverlayUserData);
+};
+
+}  // namespace
+
+// static
+InstantOverlay* InstantOverlay::FromWebContents(
+    const content::WebContents* web_contents) {
+  InstantOverlayUserData* data = static_cast<InstantOverlayUserData*>(
+      web_contents->GetUserData(&kUserDataKey));
+  return data ? data->overlay() : NULL;
+}
+
+InstantOverlay::InstantOverlay(InstantPage::Delegate* delegate,
+                               const std::string& instant_url)
+    : InstantPage(delegate),
+      loader_(new InstantLoader(ALLOW_THIS_IN_INITIALIZER_LIST(this))),
+      instant_url_(instant_url),
+      is_stale_(false),
+      is_pointer_down_from_activate_(false) {
+}
+
+InstantOverlay::~InstantOverlay() {
+}
+
+void InstantOverlay::InitContents(Profile* profile,
+                                  const content::WebContents* active_tab) {
+  loader_->Load(GURL(instant_url_), profile, active_tab, kStalePageTimeoutMS);
+  SetContents(loader_->contents());
+  contents()->SetUserData(&kUserDataKey, new InstantOverlayUserData(this));
+}
+
+content::WebContents* InstantOverlay::ReleaseContents() {
+  SetContents(NULL);
+  contents()->RemoveUserData(&kUserDataKey);
+  return loader_->ReleaseContents();
+}
+
+void InstantOverlay::DidNavigate(
+    const history::HistoryAddPageArgs& add_page_args) {
+  last_navigation_ = add_page_args;
+}
+
+bool InstantOverlay::IsUsingLocalPreview() const {
+  return instant_url_ == InstantController::kLocalOmniboxPopupURL;
+}
+
+void InstantOverlay::Update(const string16& text,
+                            size_t selection_start,
+                            size_t selection_end,
+                            bool verbatim) {
+  last_navigation_ = history::HistoryAddPageArgs();
+  InstantPage::Update(text, selection_start, selection_end, verbatim);
+}
+
+content::WebContents* InstantOverlay::ReplaceAndReleaseContents(
+    content::WebContents* new_contents) {
+  content::WebContents* old_contents = ReleaseContents();
+  loader_->SetContents(new_contents);
+  SetContents(new_contents);
+  contents()->SetUserData(&kUserDataKey, new InstantOverlayUserData(this));
+  delegate()->InstantPageSwappedContents(new_contents);
+  return old_contents;
+}
+
+void InstantOverlay::OnFocus() {
+  // The preview is getting focus. Equivalent to it being clicked.
+  bool tmp = is_pointer_down_from_activate_;
+  is_pointer_down_from_activate_ = true;
+  delegate()->InstantPageFocused(contents());
+  is_pointer_down_from_activate_ = tmp;
+}
+
+bool InstantOverlay::OnOpenURL() {
+  // The delegate determines if this navigation can continue.
+  return delegate()->InstantPageAboutToOpenURL(contents());
+}
+
+void InstantOverlay::OnPointerDown() {
+  is_pointer_down_from_activate_ = true;
+}
+
+void InstantOverlay::OnPointerRelease() {
+  if (is_pointer_down_from_activate_) {
+    is_pointer_down_from_activate_ = false;
+    delegate()->InstantPageClicked(contents());
+  }
+}
+
+void InstantOverlay::OnStalePage() {
+  is_stale_ = true;
+  delegate()->OnStalePage(contents());
+}