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// 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_EXTENSIONS_EXTENSION_VIEW_HOST_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_HOST_H_
#include "base/memory/scoped_ptr.h"
#include "components/web_modal/web_contents_modal_dialog_host.h"
#include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
#include "extensions/browser/extension_host.h"
#if defined(TOOLKIT_VIEWS)
#include "chrome/browser/ui/views/extensions/extension_view_views.h"
#elif defined(OS_MACOSX)
#include "chrome/browser/ui/cocoa/extensions/extension_view_mac.h"
#elif defined(OS_ANDROID)
#include "chrome/browser/ui/android/extensions/extension_view_android.h"
#endif
class Browser;
namespace content {
class SiteInstance;
class WebContents;
}
namespace extensions {
// The ExtensionHost for an extension that backs a view in the browser UI. For
// example, this could be an extension popup, infobar or dialog, but not a
// background page.
class ExtensionViewHost
: public ExtensionHost,
public web_modal::WebContentsModalDialogManagerDelegate,
public web_modal::WebContentsModalDialogHost {
public:
ExtensionViewHost(const Extension* extension,
content::SiteInstance* site_instance,
const GURL& url,
ViewType host_type);
virtual ~ExtensionViewHost();
// TODO(jamescook): Create platform specific subclasses?
#if defined(TOOLKIT_VIEWS)
typedef ExtensionViewViews PlatformExtensionView;
#elif defined(OS_MACOSX)
typedef ExtensionViewMac PlatformExtensionView;
#elif defined(OS_ANDROID)
// Android does not support extensions.
typedef ExtensionViewAndroid PlatformExtensionView;
#endif
PlatformExtensionView* view() { return view_.get(); }
const PlatformExtensionView* view() const { return view_.get(); }
// Create an ExtensionView and tie it to this host and |browser|. Note NULL
// is a valid argument for |browser|. Extension views may be bound to
// tab-contents hosted in ExternalTabContainer objects, which do not
// instantiate Browser objects.
void CreateView(Browser* browser);
void SetAssociatedWebContents(content::WebContents* web_contents);
// Handles keyboard events that were not handled by HandleKeyboardEvent().
// Platform specific implementation may override this method to handle the
// event in platform specific way.
virtual void UnhandledKeyboardEvent(
content::WebContents* source,
const content::NativeWebKeyboardEvent& event);
// ExtensionHost
virtual void OnDidStopLoading() OVERRIDE;
virtual void OnDocumentAvailable() OVERRIDE;
virtual void LoadInitialURL() OVERRIDE;
virtual bool IsBackgroundPage() const OVERRIDE;
// content::WebContentsDelegate
virtual content::WebContents* OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params) OVERRIDE;
virtual bool PreHandleKeyboardEvent(
content::WebContents* source,
const content::NativeWebKeyboardEvent& event,
bool* is_keyboard_shortcut) OVERRIDE;
virtual void HandleKeyboardEvent(
content::WebContents* source,
const content::NativeWebKeyboardEvent& event) OVERRIDE;
virtual bool PreHandleGestureEvent(
content::WebContents* source,
const blink::WebGestureEvent& event) OVERRIDE;
virtual content::ColorChooser* OpenColorChooser(
content::WebContents* web_contents,
SkColor color,
const std::vector<content::ColorSuggestion>& suggestions) OVERRIDE;
virtual void RunFileChooser(
content::WebContents* tab,
const content::FileChooserParams& params) OVERRIDE;
virtual void ResizeDueToAutoResize(content::WebContents* source,
const gfx::Size& new_size) OVERRIDE;
// content::WebContentsObserver
virtual void RenderViewCreated(
content::RenderViewHost* render_view_host) OVERRIDE;
// web_modal::WebContentsModalDialogManagerDelegate
virtual web_modal::WebContentsModalDialogHost*
GetWebContentsModalDialogHost() OVERRIDE;
virtual bool IsWebContentsVisible(
content::WebContents* web_contents) OVERRIDE;
// web_modal::WebContentsModalDialogHost
virtual gfx::NativeView GetHostView() const OVERRIDE;
virtual gfx::Point GetDialogPosition(const gfx::Size& size) OVERRIDE;
virtual gfx::Size GetMaximumDialogSize() OVERRIDE;
virtual void AddObserver(
web_modal::ModalDialogHostObserver* observer) OVERRIDE;
virtual void RemoveObserver(
web_modal::ModalDialogHostObserver* observer) OVERRIDE;
// extensions::ExtensionFunctionDispatcher::Delegate
virtual WindowController* GetExtensionWindowController() const OVERRIDE;
virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
virtual content::WebContents* GetVisibleWebContents() const OVERRIDE;
// content::NotificationObserver
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
// Insert a default style sheet for Extension Infobars.
void InsertInfobarCSS();
// Optional view that shows the rendered content in the UI.
scoped_ptr<PlatformExtensionView> view_;
// The relevant WebContents associated with this ExtensionViewHost, if any.
content::WebContents* associated_web_contents_;
// Observer to detect when the associated web contents is destroyed.
class AssociatedWebContentsObserver;
scoped_ptr<AssociatedWebContentsObserver> associated_web_contents_observer_;
DISALLOW_COPY_AND_ASSIGN(ExtensionViewHost);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_HOST_H_
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