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Unified Diff: chrome/browser/instant/instant_overlay.h

Issue 11824050: InstantExtended: Committed NTP (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Address comments. Created 7 years, 11 months ago
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Index: chrome/browser/instant/instant_overlay.h
diff --git a/chrome/browser/instant/instant_overlay.h b/chrome/browser/instant/instant_overlay.h
new file mode 100644
index 0000000000000000000000000000000000000000..64561711e09ca6d31b7eec0e920e847ea2fe3fc3
--- /dev/null
+++ b/chrome/browser/instant/instant_overlay.h
@@ -0,0 +1,104 @@
+// 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_OVERLAY_H_
+#define CHROME_BROWSER_INSTANT_INSTANT_OVERLAY_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string16.h"
+#include "chrome/browser/history/history_types.h"
+#include "chrome/browser/instant/instant_controller.h"
+#include "chrome/browser/instant/instant_loader.h"
+#include "chrome/browser/instant/instant_page.h"
+
+class Profile;
+
+// InstantOverlay is used to communicate with a preview WebContents that it owns
+// and loads the "Instant URL" into. This preview can appear and disappear at
+// will as the user types in the omnibox.
+class InstantOverlay : public InstantPage,
+ public InstantLoader::Delegate {
+ public:
+ // Returns the InstantOverlay for |contents| if it's used for Instant.
+ static InstantOverlay* FromWebContents(const content::WebContents* contents);
+
+ InstantOverlay(InstantController* controller,
+ const std::string& instant_url);
+ virtual ~InstantOverlay();
+
+ // Creates a new WebContents and loads |instant_url_| into it. Uses
+ // |active_tab|, if non-NULL, to initialize the size of the WebContents.
+ void InitContents(Profile* profile,
+ const content::WebContents* active_tab);
+
+ // Releases the overlay WebContents. This should be called when the overlay
+ // is committed.
+ scoped_ptr<content::WebContents> ReleaseContents() WARN_UNUSED_RESULT;
+
+ // Returns the URL that we're loading.
+ const std::string& instant_url() const { return instant_url_; }
+
+ // Returns whether the underlying contents is stale (i.e. was loaded too long
+ // ago).
+ bool is_stale() const { return is_stale_; }
+
+ // Returns true if the mouse or a touch pointer is down due to activating the
+ // preview contents.
+ bool is_pointer_down_from_activate() const {
+ return is_pointer_down_from_activate_;
+ }
+
+ // Returns info about the last navigation by the Instant page. If the page
+ // hasn't navigated since the last Update(), the URL is empty.
+ const history::HistoryAddPageArgs& last_navigation() const {
+ return last_navigation_;
+ }
+
+ // Called by the history tab helper with information that it would have added
+ // to the history service had this WebContents not been used for Instant.
+ void DidNavigate(const history::HistoryAddPageArgs& add_page_args);
+
+ // Returns true if the overlay is using
+ // InstantController::kLocalOmniboxPopupURL as the |instant_url_|.
+ bool IsUsingLocalPreview() const;
+
+ // Overridden from InstantPage:
+ virtual void Update(const string16& text,
+ size_t selection_start,
+ size_t selection_end,
+ bool verbatim) OVERRIDE;
+
+ private:
+ FRIEND_TEST_ALL_PREFIXES(InstantTest, InstantOverlayRefresh);
+
+ // Helper to access delegate() as an InstantController object.
+ InstantController* instant_controller() const {
+ return static_cast<InstantController*>(delegate());
+ }
+
+ // Overriden from InstantLoader::Delegate:
+ virtual scoped_ptr<content::WebContents> SwapContents(
+ scoped_ptr<content::WebContents> new_contents) OVERRIDE;
+ virtual void OnFocus() OVERRIDE;
+ virtual bool OnOpenURL() OVERRIDE;
+ virtual void OnMouseDown() OVERRIDE;
+ virtual void OnMouseUp() OVERRIDE;
+
+ // Called when the underlying page becomes stale.
+ void HandleStalePage();
+
+ InstantLoader loader_;
+ const std::string instant_url_;
+ bool is_stale_;
+ bool is_pointer_down_from_activate_;
+ history::HistoryAddPageArgs last_navigation_;
+
+ DISALLOW_COPY_AND_ASSIGN(InstantOverlay);
+};
+
+#endif // CHROME_BROWSER_INSTANT_INSTANT_OVERLAY_H_

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