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// Copyright (c) 2012 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 CONTENT_PUBLIC_RENDERER_RENDER_VIEW_H_
#define CONTENT_PUBLIC_RENDERER_RENDER_VIEW_H_
#include <string>
#include "base/basictypes.h"
#include "base/strings/string16.h"
#include "content/common/content_export.h"
#include "content/public/common/top_controls_state.h"
#include "ipc/ipc_sender.h"
#include "third_party/WebKit/public/web/WebNavigationPolicy.h"
#include "third_party/WebKit/public/web/WebPageVisibilityState.h"
#include "ui/gfx/native_widget_types.h"
struct WebPreferences;
namespace blink {
class WebFrame;
class WebNode;
class WebString;
class WebURLRequest;
class WebView;
struct WebContextMenuData;
}
namespace gfx {
class Size;
}
namespace content {
class ContextMenuClient;
class RenderViewVisitor;
struct ContextMenuParams;
struct SSLStatus;
class CONTENT_EXPORT RenderView : public IPC::Sender {
public:
// Returns the RenderView containing the given WebView.
static RenderView* FromWebView(blink::WebView* webview);
// Returns the RenderView for the given routing ID.
static RenderView* FromRoutingID(int routing_id);
// Visit all RenderViews with a live WebView (i.e., RenderViews that have
// been closed but not yet destroyed are excluded).
static void ForEach(RenderViewVisitor* visitor);
// Get the routing ID of the view.
virtual int GetRoutingID() const = 0;
// Page IDs allow the browser to identify pages in each renderer process for
// keeping back/forward history in sync.
// Note that this is NOT updated for every main frame navigation, only for
// "regular" navigations that go into session history. In particular, client
// redirects, like the page cycler uses (document.location.href="foo") do not
// count as regular navigations and do not increment the page id.
virtual int GetPageId() const = 0;
// Returns the size of the view.
virtual gfx::Size GetSize() const = 0;
// Gets WebKit related preferences associated with this view.
virtual WebPreferences& GetWebkitPreferences() = 0;
// Overrides the WebKit related preferences associated with this view. Note
// that the browser process may update the preferences at any time.
virtual void SetWebkitPreferences(const WebPreferences& preferences) = 0;
// Returns the associated WebView. May return NULL when the view is closing.
virtual blink::WebView* GetWebView() = 0;
// Gets the focused node. If no such node exists then the node will be isNull.
virtual blink::WebNode GetFocusedNode() const = 0;
// Gets the node that the context menu was pressed over.
virtual blink::WebNode GetContextMenuNode() const = 0;
// Returns true if the parameter node is a textfield, text area, a content
// editable div, or has an ARIA role of textbox.
virtual bool IsEditableNode(const blink::WebNode& node) const = 0;
// Evaluates a string of JavaScript in a particular frame.
virtual void EvaluateScript(const base::string16& frame_xpath,
const base::string16& jscript,
int id,
bool notify_result) = 0;
// Returns true if we should display scrollbars for the given view size and
// false if the scrollbars should be hidden.
virtual bool ShouldDisplayScrollbars(int width, int height) const = 0;
// Bitwise-ORed set of extra bindings that have been enabled. See
// BindingsPolicy for details.
virtual int GetEnabledBindings() const = 0;
// Whether content state (such as form state, scroll position and page
// contents) should be sent to the browser immediately. This is normally
// false, but set to true by some tests.
virtual bool GetContentStateImmediately() const = 0;
// Filtered time per frame based on UpdateRect messages.
virtual float GetFilteredTimePerFrame() const = 0;
// Shows a context menu with the given information. The given client will
// be called with the result.
//
// The request ID will be returned by this function. This is passed to the
// client functions for identification.
//
// If the client is destroyed, CancelContextMenu() should be called with the
// request ID returned by this function.
//
// Note: if you end up having clients outliving the RenderView, we should add
// a CancelContextMenuCallback function that takes a request id.
virtual int ShowContextMenu(ContextMenuClient* client,
const ContextMenuParams& params) = 0;
// Cancels a context menu in the event that the client is destroyed before the
// menu is closed.
virtual void CancelContextMenu(int request_id) = 0;
// Returns the current visibility of the WebView.
virtual blink::WebPageVisibilityState GetVisibilityState() const = 0;
// Displays a modal alert dialog containing the given message. Returns
// once the user dismisses the dialog.
virtual void RunModalAlertDialog(blink::WebFrame* frame,
const blink::WebString& message) = 0;
// The client should handle the navigation externally.
virtual void LoadURLExternally(
blink::WebFrame* frame,
const blink::WebURLRequest& request,
blink::WebNavigationPolicy policy) = 0;
// Used by plugins that load data in this RenderView to update the loading
// notifications.
virtual void DidStartLoading() = 0;
virtual void DidStopLoading() = 0;
// Notifies the renderer that a paint is to be generated for the size
// passed in.
virtual void Repaint(const gfx::Size& size) = 0;
// Inject edit commands to be used for the next keyboard event.
virtual void SetEditCommandForNextKeyEvent(const std::string& name,
const std::string& value) = 0;
virtual void ClearEditCommands() = 0;
// Returns a collection of security info about |frame|.
virtual SSLStatus GetSSLStatusOfFrame(blink::WebFrame* frame) const = 0;
// Returns |renderer_preferences_.accept_languages| value.
virtual const std::string& GetAcceptLanguages() const = 0;
#if defined(OS_ANDROID)
virtual void UpdateTopControlsState(TopControlsState constraints,
TopControlsState current,
bool animate) = 0;
#endif
protected:
virtual ~RenderView() {}
private:
// This interface should only be implemented inside content.
friend class RenderViewImpl;
RenderView() {}
};
} // namespace content
#endif // CONTENT_PUBLIC_RENDERER_RENDER_VIEW_H_
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