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// Copyright (c) 2009 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 APP_GTK_DND_UTIL_H_
#define APP_GTK_DND_UTIL_H_
#include <gtk/gtk.h>
#include <vector>
#include "base/string16.h"
class GURL;
class GtkDndUtil {
public:
// Registry of all internal int codes for drag and drop.
enum {
// Intra-application types.
CHROME_TAB = 1 << 0,
CHROME_BOOKMARK_ITEM = 1 << 1,
CHROME_WEBDROP_FILE_CONTENTS = 1 << 2,
CHROME_NAMED_URL = 1 << 3,
// Standard types.
TEXT_PLAIN = 1 << 4,
TEXT_URI_LIST = 1 << 5,
TEXT_HTML = 1 << 6,
INVALID_TARGET = 1 << 7,
};
// Get the atom for a given target (of the above enum type). Will return NULL
// for non-custom targets, such as CHROME_TEXT_PLAIN.
static GdkAtom GetAtomForTarget(int target);
// Creates a target list from the given mask. The mask should be an OR of
// CHROME_* values. The target list is returned with ref count 1; the caller
// is responsible for unreffing it when it is no longer needed.
// Since the MIME type for WEBDROP_FILE_CONTENTS depends on the file's
// contents, that flag is ignored by this function. It is the responsibility
// of the client code to do the right thing.
static GtkTargetList* GetTargetListFromCodeMask(int code_mask);
// Set the drag target list for |source| with the target list that
// corresponds to |code_mask|.
static void SetSourceTargetListFromCodeMask(GtkWidget* source, int code_mask);
// Set the accepted targets list for |dest|. The |target_codes| array should
// be sorted in preference order and should be terminated with -1.
static void SetDestTargetList(GtkWidget* dest, const int* target_codes);
// Write a URL to the selection in the given type.
static void WriteURLWithName(GtkSelectionData* selection_data,
const GURL& url,
const string16& title,
int type);
// Extracts data of type CHROME_NAMED_URL from |selection_data| into
// |url| and |title|. Returns true if the url/title were safely extracted
// and the url is valid.
static bool ExtractNamedURL(GtkSelectionData* selection_data,
GURL* url,
string16* title);
// Extracts data of type TEXT_URI_LIST from |selection_data| into |urls|.
static bool ExtractURIList(GtkSelectionData* selection_data,
std::vector<GURL>* urls);
private:
GtkDndUtil();
static void AddTargetToList(GtkTargetList* targets, int target_code);
};
#endif // APP_GTK_DND_UTIL_H_
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