1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/base/clipboard/clipboard.h"
7 #import <Cocoa/Cocoa.h>
9 #include "base/basictypes.h"
10 #include "base/files/file_path.h"
11 #include "base/logging.h"
12 #include "base/mac/mac_util.h"
13 #include "base/mac/scoped_cftyperef.h"
14 #import "base/mac/scoped_nsexception_enabler.h"
15 #include "base/mac/scoped_nsobject.h"
16 #include "base/stl_util.h"
17 #include "base/strings/sys_string_conversions.h"
18 #include "base/strings/utf_string_conversions.h"
19 #include "skia/ext/skia_utils_mac.h"
20 #import "third_party/mozilla/NSPasteboard+Utils.h"
21 #include "third_party/skia/include/core/SkBitmap.h"
22 #include "ui/base/clipboard/custom_data_helper.h"
23 #include "ui/gfx/canvas.h"
24 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
25 #include "ui/gfx/size.h"
31 // Would be nice if this were in UTCoreTypes.h, but it isn't
32 NSString* const kUTTypeURLName = @"public.url-name";
34 // Tells us if WebKit was the last to write to the pasteboard. There's no
35 // actual data associated with this type.
36 NSString* const kWebSmartPastePboardType = @"NeXT smart paste pasteboard type";
38 // Pepper custom data format type.
39 NSString* const kPepperCustomDataPboardType =
40 @"org.chromium.pepper-custom-data";
42 NSPasteboard* GetPasteboard() {
43 // The pasteboard should not be nil in a UI session, but this handy DCHECK
44 // can help track down problems if someone tries using clipboard code outside
46 NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
53 Clipboard::FormatType::FormatType() : data_(nil) {
56 Clipboard::FormatType::FormatType(NSString* native_format)
57 : data_([native_format retain]) {
60 Clipboard::FormatType::FormatType(const FormatType& other)
61 : data_([other.data_ retain]) {
64 Clipboard::FormatType& Clipboard::FormatType::operator=(
65 const FormatType& other) {
68 data_ = [other.data_ retain];
73 bool Clipboard::FormatType::Equals(const FormatType& other) const {
74 return [data_ isEqualToString:other.data_];
77 Clipboard::FormatType::~FormatType() {
81 std::string Clipboard::FormatType::Serialize() const {
82 return base::SysNSStringToUTF8(data_);
86 Clipboard::FormatType Clipboard::FormatType::Deserialize(
87 const std::string& serialization) {
88 return FormatType(base::SysUTF8ToNSString(serialization));
91 Clipboard::Clipboard() {
92 DCHECK(CalledOnValidThread());
95 Clipboard::~Clipboard() {
96 DCHECK(CalledOnValidThread());
99 void Clipboard::WriteObjects(ClipboardType type, const ObjectMap& objects) {
100 DCHECK(CalledOnValidThread());
101 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
103 NSPasteboard* pb = GetPasteboard();
104 [pb declareTypes:[NSArray array] owner:nil];
106 for (ObjectMap::const_iterator iter = objects.begin();
107 iter != objects.end(); ++iter) {
108 DispatchObject(static_cast<ObjectType>(iter->first), iter->second);
112 void Clipboard::WriteText(const char* text_data, size_t text_len) {
113 std::string text_str(text_data, text_len);
114 NSString *text = base::SysUTF8ToNSString(text_str);
115 NSPasteboard* pb = GetPasteboard();
116 [pb addTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
117 [pb setString:text forType:NSStringPboardType];
120 void Clipboard::WriteHTML(const char* markup_data,
122 const char* url_data,
124 // We need to mark it as utf-8. (see crbug.com/11957)
125 std::string html_fragment_str("<meta charset='utf-8'>");
126 html_fragment_str.append(markup_data, markup_len);
127 NSString *html_fragment = base::SysUTF8ToNSString(html_fragment_str);
129 // TODO(avi): url_data?
130 NSPasteboard* pb = GetPasteboard();
131 [pb addTypes:[NSArray arrayWithObject:NSHTMLPboardType] owner:nil];
132 [pb setString:html_fragment forType:NSHTMLPboardType];
135 void Clipboard::WriteRTF(const char* rtf_data, size_t data_len) {
136 WriteData(GetRtfFormatType(), rtf_data, data_len);
139 void Clipboard::WriteBookmark(const char* title_data,
141 const char* url_data,
143 std::string title_str(title_data, title_len);
144 NSString *title = base::SysUTF8ToNSString(title_str);
145 std::string url_str(url_data, url_len);
146 NSString *url = base::SysUTF8ToNSString(url_str);
148 // TODO(playmobil): In the Windows version of this function, an HTML
149 // representation of the bookmark is also added to the clipboard, to support
150 // drag and drop of web shortcuts. I don't think we need to do this on the
151 // Mac, but we should double check later on.
152 NSURL* nsurl = [NSURL URLWithString:url];
154 NSPasteboard* pb = GetPasteboard();
155 // passing UTIs into the pasteboard methods is valid >= 10.5
156 [pb addTypes:[NSArray arrayWithObjects:NSURLPboardType,
160 [nsurl writeToPasteboard:pb];
161 [pb setString:title forType:kUTTypeURLName];
164 void Clipboard::WriteBitmap(const SkBitmap& bitmap) {
165 NSImage* image = gfx::SkBitmapToNSImageWithColorSpace(
166 bitmap, base::mac::GetSystemColorSpace());
167 // An API to ask the NSImage to write itself to the clipboard comes in 10.6 :(
168 // For now, spit out the image as a TIFF.
169 NSPasteboard* pb = GetPasteboard();
170 [pb addTypes:[NSArray arrayWithObject:NSTIFFPboardType] owner:nil];
171 NSData *tiff_data = [image TIFFRepresentation];
172 LOG_IF(ERROR, tiff_data == NULL) << "Failed to allocate image for clipboard";
174 [pb setData:tiff_data forType:NSTIFFPboardType];
178 void Clipboard::WriteData(const FormatType& format,
179 const char* data_data,
181 NSPasteboard* pb = GetPasteboard();
182 [pb addTypes:[NSArray arrayWithObject:format.ToNSString()] owner:nil];
183 [pb setData:[NSData dataWithBytes:data_data length:data_len]
184 forType:format.ToNSString()];
187 // Write an extra flavor that signifies WebKit was the last to modify the
188 // pasteboard. This flavor has no data.
189 void Clipboard::WriteWebSmartPaste() {
190 NSPasteboard* pb = GetPasteboard();
191 NSString* format = GetWebKitSmartPasteFormatType().ToNSString();
192 [pb addTypes:[NSArray arrayWithObject:format] owner:nil];
193 [pb setData:nil forType:format];
196 uint64 Clipboard::GetSequenceNumber(ClipboardType type) {
197 DCHECK(CalledOnValidThread());
198 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
200 NSPasteboard* pb = GetPasteboard();
201 return [pb changeCount];
204 bool Clipboard::IsFormatAvailable(const FormatType& format,
205 ClipboardType type) const {
206 DCHECK(CalledOnValidThread());
207 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
209 NSPasteboard* pb = GetPasteboard();
210 NSArray* types = [pb types];
212 // Safari only places RTF on the pasteboard, never HTML. We can convert RTF
213 // to HTML, so the presence of either indicates success when looking for HTML.
214 if ([format.ToNSString() isEqualToString:NSHTMLPboardType]) {
215 return [types containsObject:NSHTMLPboardType] ||
216 [types containsObject:NSRTFPboardType];
218 return [types containsObject:format.ToNSString()];
221 void Clipboard::Clear(ClipboardType type) {
222 DCHECK(CalledOnValidThread());
223 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
225 NSPasteboard* pb = GetPasteboard();
226 [pb declareTypes:[NSArray array] owner:nil];
229 void Clipboard::ReadAvailableTypes(ClipboardType type,
230 std::vector<base::string16>* types,
231 bool* contains_filenames) const {
232 DCHECK(CalledOnValidThread());
234 if (IsFormatAvailable(Clipboard::GetPlainTextFormatType(), type))
235 types->push_back(base::UTF8ToUTF16(kMimeTypeText));
236 if (IsFormatAvailable(Clipboard::GetHtmlFormatType(), type))
237 types->push_back(base::UTF8ToUTF16(kMimeTypeHTML));
238 if (IsFormatAvailable(Clipboard::GetRtfFormatType(), type))
239 types->push_back(base::UTF8ToUTF16(kMimeTypeRTF));
240 if ([NSImage canInitWithPasteboard:GetPasteboard()])
241 types->push_back(base::UTF8ToUTF16(kMimeTypePNG));
242 *contains_filenames = false;
244 NSPasteboard* pb = GetPasteboard();
245 if ([[pb types] containsObject:kWebCustomDataPboardType]) {
246 NSData* data = [pb dataForType:kWebCustomDataPboardType];
248 ReadCustomDataTypes([data bytes], [data length], types);
252 void Clipboard::ReadText(ClipboardType type, base::string16* result) const {
253 DCHECK(CalledOnValidThread());
254 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
255 NSPasteboard* pb = GetPasteboard();
256 NSString* contents = [pb stringForType:NSStringPboardType];
258 *result = base::SysNSStringToUTF16(contents);
261 void Clipboard::ReadAsciiText(ClipboardType type, std::string* result) const {
262 DCHECK(CalledOnValidThread());
263 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
264 NSPasteboard* pb = GetPasteboard();
265 NSString* contents = [pb stringForType:NSStringPboardType];
270 result->assign([contents UTF8String]);
273 void Clipboard::ReadHTML(ClipboardType type,
274 base::string16* markup,
275 std::string* src_url,
276 uint32* fragment_start,
277 uint32* fragment_end) const {
278 DCHECK(CalledOnValidThread());
279 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
281 // TODO(avi): src_url?
286 NSPasteboard* pb = GetPasteboard();
287 NSArray* supportedTypes = [NSArray arrayWithObjects:NSHTMLPboardType,
291 NSString* bestType = [pb availableTypeFromArray:supportedTypes];
293 NSString* contents = [pb stringForType:bestType];
294 if ([bestType isEqualToString:NSRTFPboardType])
295 contents = [pb htmlFromRtf];
296 *markup = base::SysNSStringToUTF16(contents);
300 DCHECK(markup->length() <= kuint32max);
301 *fragment_end = static_cast<uint32>(markup->length());
304 void Clipboard::ReadRTF(ClipboardType type, std::string* result) const {
305 DCHECK(CalledOnValidThread());
306 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
308 return ReadData(GetRtfFormatType(), result);
311 SkBitmap Clipboard::ReadImage(ClipboardType type) const {
312 DCHECK(CalledOnValidThread());
313 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE);
315 // If the pasteboard's image data is not to its liking, the guts of NSImage
316 // may throw, and that exception will leak. Prevent a crash in that case;
317 // a blank image is better.
318 base::scoped_nsobject<NSImage> image(base::mac::RunBlockIgnoringExceptions(^{
319 return [[NSImage alloc] initWithPasteboard:GetPasteboard()];
323 bitmap = gfx::NSImageToSkBitmapWithColorSpace(
324 image.get(), /*is_opaque=*/ false, base::mac::GetSystemColorSpace());
329 void Clipboard::ReadCustomData(ClipboardType clipboard_type,
330 const base::string16& type,
331 base::string16* result) const {
332 DCHECK(CalledOnValidThread());
333 DCHECK_EQ(clipboard_type, CLIPBOARD_TYPE_COPY_PASTE);
335 NSPasteboard* pb = GetPasteboard();
336 if ([[pb types] containsObject:kWebCustomDataPboardType]) {
337 NSData* data = [pb dataForType:kWebCustomDataPboardType];
339 ReadCustomDataForType([data bytes], [data length], type, result);
343 void Clipboard::ReadBookmark(base::string16* title, std::string* url) const {
344 DCHECK(CalledOnValidThread());
345 NSPasteboard* pb = GetPasteboard();
348 NSString* contents = [pb stringForType:kUTTypeURLName];
349 *title = base::SysNSStringToUTF16(contents);
353 NSString* url_string = [[NSURL URLFromPasteboard:pb] absoluteString];
357 url->assign([url_string UTF8String]);
361 void Clipboard::ReadData(const FormatType& format, std::string* result) const {
362 DCHECK(CalledOnValidThread());
363 NSPasteboard* pb = GetPasteboard();
364 NSData* data = [pb dataForType:format.ToNSString()];
366 result->assign(static_cast<const char*>([data bytes]), [data length]);
370 Clipboard::FormatType Clipboard::GetFormatType(
371 const std::string& format_string) {
372 return FormatType::Deserialize(format_string);
376 const Clipboard::FormatType& Clipboard::GetUrlFormatType() {
377 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSURLPboardType));
382 const Clipboard::FormatType& Clipboard::GetUrlWFormatType() {
383 return GetUrlFormatType();
387 const Clipboard::FormatType& Clipboard::GetPlainTextFormatType() {
388 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSStringPboardType));
393 const Clipboard::FormatType& Clipboard::GetPlainTextWFormatType() {
394 return GetPlainTextFormatType();
398 const Clipboard::FormatType& Clipboard::GetFilenameFormatType() {
399 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSFilenamesPboardType));
404 const Clipboard::FormatType& Clipboard::GetFilenameWFormatType() {
405 return GetFilenameFormatType();
409 const Clipboard::FormatType& Clipboard::GetHtmlFormatType() {
410 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSHTMLPboardType));
415 const Clipboard::FormatType& Clipboard::GetRtfFormatType() {
416 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSRTFPboardType));
421 const Clipboard::FormatType& Clipboard::GetBitmapFormatType() {
422 CR_DEFINE_STATIC_LOCAL(FormatType, type, (NSTIFFPboardType));
427 const Clipboard::FormatType& Clipboard::GetWebKitSmartPasteFormatType() {
428 CR_DEFINE_STATIC_LOCAL(FormatType, type, (kWebSmartPastePboardType));
433 const Clipboard::FormatType& Clipboard::GetWebCustomDataFormatType() {
434 CR_DEFINE_STATIC_LOCAL(FormatType, type, (kWebCustomDataPboardType));
439 const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() {
440 CR_DEFINE_STATIC_LOCAL(FormatType, type, (kPepperCustomDataPboardType));