// Copyright (c) 2011 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 WEBKIT_GLUE_WEBKIT_GLUE_H_
#define WEBKIT_GLUE_WEBKIT_GLUE_H_

#include "base/basictypes.h"

#if defined(OS_WIN)
#include <windows.h>
#endif

#include <string>
#include <vector>

#include "base/file_path.h"
#include "base/platform_file.h"
#include "base/string16.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileError.h"
#include "webkit/glue/webkit_glue_export.h"

class GURL;
class SkBitmap;

namespace base {
class StringPiece;
}

namespace skia {
class PlatformCanvas;
}

namespace WebKit {
class WebFrame;
class WebString;
}

namespace webkit_glue {

WEBKIT_GLUE_EXPORT void SetJavaScriptFlags(const std::string& flags);

// Turn on logging for flags in the provided comma delimited list.
WEBKIT_GLUE_EXPORT void EnableWebCoreLogChannels(const std::string& channels);

// Returns the text of the document element.
WEBKIT_GLUE_EXPORT string16 DumpDocumentText(WebKit::WebFrame* web_frame);

// Returns the text of the document element and optionally its child frames.
// If recursive is false, this is equivalent to DumpDocumentText followed by
// a newline.  If recursive is true, it recursively dumps all frames as text.
string16 DumpFramesAsText(WebKit::WebFrame* web_frame, bool recursive);

// Returns the renderer's description of its tree (its externalRepresentation).
WEBKIT_GLUE_EXPORT string16 DumpRenderer(WebKit::WebFrame* web_frame);

// Fill the value of counter in the element specified by the id into
// counter_value.  Return false when the specified id doesn't exist.
bool CounterValueForElementById(WebKit::WebFrame* web_frame,
                                const std::string& id,
                                string16* counter_value);

// Returns the number of page where the specified element will be put.
int PageNumberForElementById(WebKit::WebFrame* web_frame,
                             const std::string& id,
                             float page_width_in_pixels,
                             float page_height_in_pixels);

// Returns the number of pages to be printed.
int NumberOfPages(WebKit::WebFrame* web_frame,
                  float page_width_in_pixels,
                  float page_height_in_pixels);

// Returns a dump of the scroll position of the webframe.
string16 DumpFrameScrollPosition(WebKit::WebFrame* web_frame, bool recursive);

// Returns a dump of the given history state suitable for implementing the
// dumpBackForwardList command of the layoutTestController.
WEBKIT_GLUE_EXPORT string16 DumpHistoryState(const std::string& history_state,
                                             int indent,
                                             bool is_current);

// Sets the user agent.  Pass true for overriding if this is a custom
// user agent instead of the default one (in order to turn off any browser
// sniffing workarounds). This must be called before GetUserAgent() can
// be called.
WEBKIT_GLUE_EXPORT void SetUserAgent(const std::string& user_agent,
                                     bool overriding);

// Returns the user agent to use for the given URL. SetUserAgent() must
// be called prior to calling this function.
WEBKIT_GLUE_EXPORT const std::string& GetUserAgent(const GURL& url);

// Creates serialized state for the specified URL. This is a variant of
// HistoryItemToString (in glue_serialize) that is used during session restore
// if the saved state is empty.
WEBKIT_GLUE_EXPORT std::string CreateHistoryStateForURL(const GURL& url);

// Removes any form data state from the history state string |content_state|.
WEBKIT_GLUE_EXPORT std::string RemoveFormDataFromHistoryState(
    const std::string& content_state);

// Removes scroll offset from the history state string |content_state|.
WEBKIT_GLUE_EXPORT std::string RemoveScrollOffsetFromHistoryState(
    const std::string& content_state);

#ifndef NDEBUG
// Checks various important objects to see if there are any in memory, and
// calls AppendToLog with any leaked objects. Designed to be called on
// shutdown.
WEBKIT_GLUE_EXPORT void CheckForLeaks();
#endif

// Decodes the image from the data in |image_data| into |image|.
// Returns false if the image could not be decoded.
WEBKIT_GLUE_EXPORT bool DecodeImage(const std::string& image_data,
                                    SkBitmap* image);

// Tells the plugin thread to terminate the process forcefully instead of
// exiting cleanly.
void SetForcefullyTerminatePluginProcess(bool value);

// Returns true if the plugin thread should terminate the process forcefully
// instead of exiting cleanly.
WEBKIT_GLUE_EXPORT bool ShouldForcefullyTerminatePluginProcess();

// File path string conversions.
WEBKIT_GLUE_EXPORT FilePath::StringType WebStringToFilePathString(
    const WebKit::WebString& str);
WEBKIT_GLUE_EXPORT WebKit::WebString FilePathStringToWebString(
    const FilePath::StringType& str);
WEBKIT_GLUE_EXPORT FilePath WebStringToFilePath(const WebKit::WebString& str);
WEBKIT_GLUE_EXPORT WebKit::WebString FilePathToWebString(
    const FilePath& file_path);

// File error conversion
WEBKIT_GLUE_EXPORT WebKit::WebFileError PlatformFileErrorToWebFileError(
    base::PlatformFileError error_code);

// Returns a WebCanvas pointer associated with the given Skia canvas.
WEBKIT_GLUE_EXPORT WebKit::WebCanvas* ToWebCanvas(skia::PlatformCanvas*);

// Returns the number of currently-active glyph pages this process is using.
// There can be many such pages (maps of 256 character -> glyph) so this is
// used to get memory usage statistics.
WEBKIT_GLUE_EXPORT int GetGlyphPageCount();

// Returns WebKit Web Inspector protocol version.
std::string GetInspectorProtocolVersion();

// Tells caller whether the given protocol version is supported by the.
WEBKIT_GLUE_EXPORT bool IsInspectorProtocolVersionSupported(
    const std::string& version);

}  // namespace webkit_glue

#endif  // WEBKIT_GLUE_WEBKIT_GLUE_H_