InstantExtended: Committed NTP

chrome/browser/instant/instant_page.h

+// 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.
+
+#ifndef CHROME_BROWSER_INSTANT_INSTANT_PAGE_H_
+#define CHROME_BROWSER_INSTANT_INSTANT_PAGE_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/instant/instant_api_wrapper.h"
+#include "chrome/browser/instant/instant_controller.h"
+
+class InstantController;
+
+// InstantController interacts with a page that implements the Instant API
+// through one of the derived classes of InstantPage (InstantOverlay, InstantNTP
+// or InstantTab).
+//
+// InstantPage is a simple wrapper around InstantAPIWrapper::Controller that
+// adds some more common state and methods shared by all the implementors.
+class InstantPage : public InstantAPIWrapper::Controller {
+ public:
+  virtual ~InstantPage() {}
+
+  // Pointer to the InstantAPIWrapper object owned by InstantPage.
+  InstantAPIWrapper* api() { return &api_; }
+
+  // The WebContents corresponding to the page we're talking to. May be NULL.
+  virtual content::WebContents* contents() const = 0;
+
+  // Overriden from InstantAPIWrapper::Controller.
+  virtual bool supports_instant() const OVERRIDE { return supports_instant_; }
+  virtual void set_supports_instant(bool supports_instant) OVERRIDE {
+    supports_instant_ = supports_instant;
+  }
+
+ protected:
+  explicit InstantPage(InstantController* controller)
+      : controller_(controller),
+        api_(ALLOW_THIS_IN_INITIALIZER_LIST(this), controller),
+        supports_instant_(false) {}
+
+  InstantController* const controller_;
+  InstantAPIWrapper api_;
+  bool supports_instant_;
+};
+
+#endif  // CHROME_BROWSER_INSTANT_INSTANT_PAGE_H_