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// 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.
#import "chrome/browser/ui/cocoa/drag_util.h"
#include "base/basictypes.h"
#include "base/logging.h"
#include "base/sys_string_conversions.h"
#include "content/common/url_constants.h"
#include "googleurl/src/gurl.h"
#include "net/base/mime_util.h"
#include "net/base/net_util.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
#import "third_party/mozilla/NSPasteboard+Utils.h"
#include "webkit/glue/webcursor.h"
namespace drag_util {
BOOL PopulateURLAndTitleFromPasteBoard(GURL* url,
string16* title,
NSPasteboard* pboard,
BOOL convertFilenames) {
CHECK(url);
// Bail out early if there's no URL data.
if (![pboard containsURLData])
return NO;
// -getURLs:andTitles:convertingFilenames: will already validate URIs so we
// don't need to again. The arrays returned are both of NSStrings.
NSArray* urlArray = nil;
NSArray* titleArray = nil;
[pboard getURLs:&urlArray andTitles:&titleArray
convertingFilenames:convertFilenames];
DCHECK_EQ([urlArray count], [titleArray count]);
// It's possible that no URLs were actually provided!
if (![urlArray count])
return NO;
NSString* urlString = [urlArray objectAtIndex:0];
if ([urlString length]) {
// Check again just to make sure to not assign NULL into a std::string,
// which throws an exception.
const char* utf8Url = [urlString UTF8String];
if (utf8Url) {
*url = GURL(utf8Url);
// Extra paranoia check.
if (title && [titleArray count])
*title = base::SysNSStringToUTF16([titleArray objectAtIndex:0]);
}
}
return YES;
}
BOOL IsUnsupportedDropData(id<NSDraggingInfo> info) {
if ([[info draggingPasteboard] containsURLData]) {
GURL url;
PopulateURLAndTitleFromPasteBoard(&url,
NULL,
[info draggingPasteboard],
YES);
// If dragging a file, only allow dropping supported file types (that the
// web view can display).
if (url.SchemeIs(chrome::kFileScheme)) {
FilePath full_path;
net::FileURLToFilePath(url, &full_path);
std::string mime_type;
net::GetMimeTypeFromFile(full_path, &mime_type);
if (!net::IsSupportedMimeType(mime_type))
return YES;
}
}
return NO;
}
void SetNoDropCursor() {
WebKit::WebCursorInfo cursorInfo(WebKit::WebCursorInfo::TypeNoDrop);
[WebCursor(cursorInfo).GetCursor() set];
}
} // namespace drag_util
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