MacViews: Implemented Drag & Drop

ui/base/dragdrop/os_exchange_data_provider_mac.mm

 // Copyright 2014 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.
 
 #include "ui/base/dragdrop/os_exchange_data_provider_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/pickle.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #import "third_party/mozilla/NSPasteboard+Utils.h"
 #import "ui/base/clipboard/clipboard_util_mac.h"
+#import "ui/base/dragdrop/cocoa_dnd_util.h"
 #include "url/gurl.h"
 
 namespace ui {
 
 OSExchangeDataProviderMac::OSExchangeDataProviderMac()
     : pasteboard_(new ui::UniquePasteboard) {}
 
 OSExchangeDataProviderMac::OSExchangeDataProviderMac(
     scoped_refptr<ui::UniquePasteboard> pb)
     : pasteboard_(pb) {}
@@ skipping 37 matching lines @@
   NOTIMPLEMENTED();
 }
 
 void OSExchangeDataProviderMac::SetPickledData(
     const Clipboard::FormatType& format,
     const base::Pickle& data) {
   NSData* ns_data = [NSData dataWithBytes:data.data() length:data.size()];
   [pasteboard_->get() setData:ns_data forType:format.ToNSString()];
 }
 
+void OSExchangeDataProviderMac::SetDragImage(const gfx::ImageSkia& image) {
+  drag_image_ = image;
+}
+
+void OSExchangeDataProviderMac::SetNativeEvent(const base::NativeEvent& event) {
+  event_ = event;
+}
+
 bool OSExchangeDataProviderMac::GetString(base::string16* data) const {
   DCHECK(data);
   NSString* item = [pasteboard_->get() stringForType:NSPasteboardTypeString];
   if (item) {
     *data = base::SysNSStringToUTF16(item);
     return true;
   }
-
   // There was no NSString, check for an NSURL.
   GURL url;
   base::string16 title;
   bool result =
       GetURLAndTitle(OSExchangeData::DO_NOT_CONVERT_FILENAMES, &url, &title);
   if (result)
     *data = base::UTF8ToUTF16(url.spec());
 
   return result;
 }
@@ skipping 51 matching lines @@
   DCHECK(data);
   NSData* ns_data = [pasteboard_->get() dataForType:format.ToNSString()];
   if (!ns_data)
     return false;
 
   *data =
       base::Pickle(static_cast<const char*>([ns_data bytes]), [ns_data length]);
   return true;
 }
 
+const gfx::ImageSkia& OSExchangeDataProviderMac::GetDragImage() const {
+  return drag_image_;
+}
+
+const base::NativeEvent& OSExchangeDataProviderMac::GetNativeEvent() const {
+  return event_;
+}
+
+NSData* OSExchangeDataProviderMac::GetNSDataForType(NSString* type) const {
+  return [pasteboard_->get() dataForType:type];
+}
+
 bool OSExchangeDataProviderMac::HasString() const {
   base::string16 string;
   return GetString(&string);
 }
 
 bool OSExchangeDataProviderMac::HasURL(
     OSExchangeData::FilenameToURLPolicy policy) const {
   GURL url;
   base::string16 title;
   return GetURLAndTitle(policy, &url, &title);
 }
 
 bool OSExchangeDataProviderMac::HasFile() const {
   return [[pasteboard_->get() types] containsObject:NSFilenamesPboardType];
 }
 
 bool OSExchangeDataProviderMac::HasCustomFormat(
     const Clipboard::FormatType& format) const {
   return [[pasteboard_->get() types] containsObject:format.ToNSString()];
 }
 
+NSArray* OSExchangeDataProviderMac::GetPasteboardTypes() const {
+  return [pasteboard_->get() types];
+}
+
+OSExchangeData::Provider*
+OSExchangeDataProviderMac::CreateProviderFromPasteboard(
+    NSPasteboard* pasteboard) {
+  OSExchangeDataProviderMac* provider = new OSExchangeDataProviderMac();
+
+  for (NSPasteboardItem* item in [pasteboard pasteboardItems]) {
+    ClipboardUtil::AddDataToPasteboard(provider->pasteboard_->get(), item);
+  }
+
+  return provider;
+}
+
+NSArray* OSExchangeDataProviderMac::SupportedPasteboardTypes() {
+  return @[
+    ui::ClipboardUtil::UTIForWebURLsAndTitles(), NSURLPboardType,
+    NSPasteboardTypeString, NSFilenamesPboardType
+  ];
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // OSExchangeData, public:
 
 // static
 OSExchangeData::Provider* OSExchangeData::CreateProvider() {
   return new OSExchangeDataProviderMac;
 }
 
 }  // namespace ui