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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 "chrome/browser/profiles/profile.h"
#include "content/browser/plugin_service.h"
#include "content/public/common/url_constants.h"
#include "googleurl/src/gurl.h"
#include "net/base/mime_util.h"
#include "net/base/net_util.h"
#import "third_party/mozilla/NSPasteboard+Utils.h"
#include "webkit/plugins/npapi/plugin_list.h"
namespace drag_util {
BOOL PopulateURLAndTitleFromPasteBoard(GURL* url,
string16* title,
NSPasteboard* pboard,
BOOL convert_filenames) {
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* url_array = nil;
NSArray* title_array = nil;
[pboard getURLs:&url_array andTitles:&title_array
convertingFilenames:convert_filenames];
DCHECK_EQ([url_array count], [title_array count]);
// It's possible that no URLs were actually provided!
if (![url_array count])
return NO;
NSString* url_string = [url_array objectAtIndex:0];
if ([url_string length]) {
// Check again just to make sure to not assign NULL into a std::string,
// which throws an exception.
const char* utf8_url = [url_string UTF8String];
if (utf8_url) {
*url = GURL(utf8_url);
// Extra paranoia check.
if (title && [title_array count])
*title = base::SysNSStringToUTF16([title_array objectAtIndex:0]);
}
}
return YES;
}
GURL GetFileURLFromDropData(id<NSDraggingInfo> info) {
if ([[info draggingPasteboard] containsURLData]) {
GURL url;
PopulateURLAndTitleFromPasteBoard(&url,
NULL,
[info draggingPasteboard],
YES);
if (url.SchemeIs(chrome::kFileScheme))
return url;
}
return GURL();
}
static BOOL IsSupportedFileURL(Profile* profile, const GURL& url) {
FilePath full_path;
net::FileURLToFilePath(url, &full_path);
std::string mime_type;
net::GetMimeTypeFromFile(full_path, &mime_type);
// This logic mirrors |BufferedResourceHandler::ShouldDownload()|.
// TODO(asvitkine): Refactor this out to a common location instead of
// duplicating code.
if (net::IsSupportedMimeType(mime_type))
return YES;
// Check whether there is a plugin that supports the mime type. (e.g. PDF)
// TODO(bauerb): This possibly uses stale information, but it's guaranteed not
// to do disk access.
bool allow_wildcard = false;
webkit::WebPluginInfo plugin;
return PluginService::GetInstance()->GetPluginInfo(
-1, // process ID
MSG_ROUTING_NONE, // routing ID
profile->GetResourceContext(),
url, GURL(), mime_type, allow_wildcard,
NULL, &plugin, NULL);
}
BOOL IsUnsupportedDropData(Profile* profile, id<NSDraggingInfo> info) {
GURL url = GetFileURLFromDropData(info);
if (!url.is_empty()) {
// If dragging a file, only allow dropping supported file types (that the
// web view can display).
return !IsSupportedFileURL(profile, url);
}
return NO;
}
} // namespace drag_util
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