WebKit/mac/Misc/WebNSPasteboardExtras.mm
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/mac/Misc/WebNSPasteboardExtras.mm	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,298 @@
+/*
+ * Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "WebNSPasteboardExtras.h"
+
+#import "DOMElementInternal.h"
+#import "WebArchive.h"
+#import "WebFrameInternal.h"
+#import "WebHTMLViewInternal.h"
+#import "WebNSURLExtras.h"
+#import "WebResourcePrivate.h"
+#import "WebURLsWithTitles.h"
+#import "WebViewPrivate.h"
+#import <WebCore/Element.h>
+#import <WebCore/Image.h>
+#import <WebCore/MIMETypeRegistry.h>
+#import <WebCore/RenderImage.h>
+#import <WebKit/DOMExtensions.h>
+#import <WebKit/DOMPrivate.h>
+#import <WebKitSystemInterface.h>
+#import <wtf/Assertions.h>
+#import <wtf/RetainPtr.h>
+#import <wtf/StdLibExtras.h>
+
+@interface NSFilePromiseDragSource : NSObject
+- (id)initWithSource:(id)draggingSource;
+- (void)setTypes:(NSArray *)types onPasteboard:(NSPasteboard *)pboard;
+@end
+
+using namespace WebCore;
+
+NSString *WebURLPboardType = @"public.url";
+NSString *WebURLNamePboardType = @"public.url-name";
+
+@implementation NSPasteboard (WebExtras)
+
++ (NSArray *)_web_writableTypesForURL
+{
+    DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, ([[NSArray alloc] initWithObjects:
+        WebURLsWithTitlesPboardType,
+        NSURLPboardType,
+        WebURLPboardType,
+        WebURLNamePboardType,
+        NSStringPboardType,
+        nil]));
+    return types.get();
+}
+
+static inline NSArray *_createWritableTypesForImageWithoutArchive()
+{
+    NSMutableArray *types = [[NSMutableArray alloc] initWithObjects:NSTIFFPboardType, nil];
+    [types addObjectsFromArray:[NSPasteboard _web_writableTypesForURL]];
+    return types;
+}
+
+static NSArray *_writableTypesForImageWithoutArchive (void)
+{
+    DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, (_createWritableTypesForImageWithoutArchive()));
+    return types.get();
+}
+
+static inline NSArray *_createWritableTypesForImageWithArchive()
+{
+    NSMutableArray *types = [_writableTypesForImageWithoutArchive() mutableCopy];
+    [types addObject:NSRTFDPboardType];
+    [types addObject:WebArchivePboardType];
+    return types;
+}
+
+static NSArray *_writableTypesForImageWithArchive (void)
+{
+    DEFINE_STATIC_LOCAL(RetainPtr<NSArray>, types, (_createWritableTypesForImageWithArchive()));
+    return types.get();
+}
+
++ (NSArray *)_web_writableTypesForImageIncludingArchive:(BOOL)hasArchive
+{
+    return hasArchive 
+        ? _writableTypesForImageWithArchive()
+        : _writableTypesForImageWithoutArchive();
+}
+
++ (NSArray *)_web_dragTypesForURL
+{
+    return [NSArray arrayWithObjects:
+        WebURLsWithTitlesPboardType,
+        NSURLPboardType,
+        WebURLPboardType,
+        WebURLNamePboardType,
+        NSStringPboardType,
+        NSFilenamesPboardType,
+        nil];
+}
+
+- (NSURL *)_web_bestURL
+{
+    NSArray *types = [self types];
+
+    if ([types containsObject:NSURLPboardType]) {
+        NSURL *URLFromPasteboard = [NSURL URLFromPasteboard:self];
+        NSString *scheme = [URLFromPasteboard scheme];
+        if ([scheme isEqualToString:@"http"] || [scheme isEqualToString:@"https"]) {
+            return [URLFromPasteboard _webkit_canonicalize];
+        }
+    }
+
+    if ([types containsObject:NSStringPboardType]) {
+        NSString *URLString = [self stringForType:NSStringPboardType];
+        if ([URLString _webkit_looksLikeAbsoluteURL]) {
+            NSURL *URL = [[NSURL _web_URLWithUserTypedString:URLString] _webkit_canonicalize];
+            if (URL) {
+                return URL;
+            }
+        }
+    }
+
+    if ([types containsObject:NSFilenamesPboardType]) {
+        NSArray *files = [self propertyListForType:NSFilenamesPboardType];
+        // FIXME: Maybe it makes more sense to allow multiple files and only use the first one?
+        if ([files count] == 1) {
+            NSString *file = [files objectAtIndex:0];
+            // FIXME: We are filtering out directories because that's what the original code used to
+            // do. Without this check, if the URL points to a local directory, Safari will open the
+            // parent directory of the directory in Finder. This check should go away as soon as
+            // possible.
+            BOOL isDirectory;
+            if ([[NSFileManager defaultManager] fileExistsAtPath:file isDirectory:&isDirectory] && isDirectory)
+                return nil;
+            return [[NSURL fileURLWithPath:file] _webkit_canonicalize];
+        }
+    }
+
+    return nil;
+}
+
+- (void)_web_writeURL:(NSURL *)URL andTitle:(NSString *)title types:(NSArray *)types
+{
+    ASSERT(URL);
+
+    if ([title length] == 0) {
+        title = [[URL path] lastPathComponent];
+        if ([title length] == 0)
+            title = [URL _web_userVisibleString];
+    }
+    
+    if ([types containsObject:NSURLPboardType])
+        [URL writeToPasteboard:self];
+    if ([types containsObject:WebURLPboardType])
+        [self setString:[URL _web_originalDataAsString] forType:WebURLPboardType];
+    if ([types containsObject:WebURLNamePboardType])
+        [self setString:title forType:WebURLNamePboardType];
+    if ([types containsObject:NSStringPboardType])
+        [self setString:[URL _web_userVisibleString] forType:NSStringPboardType];
+    if ([types containsObject:WebURLsWithTitlesPboardType])
+        [WebURLsWithTitles writeURLs:[NSArray arrayWithObject:URL] andTitles:[NSArray arrayWithObject:title] toPasteboard:self];
+}
+
++ (int)_web_setFindPasteboardString:(NSString *)string withOwner:(id)owner
+{
+    NSPasteboard *findPasteboard = [NSPasteboard pasteboardWithName:NSFindPboard];
+    [findPasteboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:owner];
+    [findPasteboard setString:string forType:NSStringPboardType];
+    return [findPasteboard changeCount];
+}
+
+- (void)_web_writeFileWrapperAsRTFDAttachment:(NSFileWrapper *)wrapper
+{
+    NSTextAttachment *attachment = [[NSTextAttachment alloc] initWithFileWrapper:wrapper];
+    
+    NSAttributedString *string = [NSAttributedString attributedStringWithAttachment:attachment];
+    [attachment release];
+    
+    NSData *RTFDData = [string RTFDFromRange:NSMakeRange(0, [string length]) documentAttributes:nil];
+    [self setData:RTFDData forType:NSRTFDPboardType];
+}
+
+
+- (void)_web_writePromisedRTFDFromArchive:(WebArchive*)archive containsImage:(BOOL)containsImage
+{
+    ASSERT(archive);
+    // This image data is either the only subresource of an archive (HTML image case)
+    // or the main resource (standalone image case).
+    NSArray *subresources = [archive subresources];
+    WebResource *resource = [archive mainResource];
+    if (containsImage && [subresources count] > 0 
+        && MIMETypeRegistry::isSupportedImageResourceMIMEType([[subresources objectAtIndex:0] MIMEType]))
+        resource = (WebResource *)[subresources objectAtIndex:0];
+    ASSERT(resource != nil);
+    
+    ASSERT(!containsImage || MIMETypeRegistry::isSupportedImageResourceMIMEType([resource MIMEType]));
+    if (!containsImage || MIMETypeRegistry::isSupportedImageResourceMIMEType([resource MIMEType]))
+        [self _web_writeFileWrapperAsRTFDAttachment:[resource _fileWrapperRepresentation]];
+    
+}
+
+static CachedImage* imageFromElement(DOMElement *domElement)
+{
+    Element* element = core(domElement);
+    if (!element)
+        return 0;
+    
+    RenderObject* renderer = element->renderer();
+    RenderImage* imageRenderer = toRenderImage(renderer);
+    if (!imageRenderer->cachedImage() || imageRenderer->cachedImage()->errorOccurred()) 
+        return 0;        
+    return imageRenderer->cachedImage();
+}
+
+- (void)_web_writeImage:(NSImage *)image
+                element:(DOMElement *)element
+                    URL:(NSURL *)URL 
+                  title:(NSString *)title
+                archive:(WebArchive *)archive
+                  types:(NSArray *)types
+                 source:(WebHTMLView *)source
+{
+    ASSERT(image || element);
+    ASSERT(URL);
+
+    [self _web_writeURL:URL andTitle:title types:types];
+    
+    if ([types containsObject:NSTIFFPboardType]) {
+        if (image)
+            [self setData:[image TIFFRepresentation] forType:NSTIFFPboardType];
+        else if (source && element)
+            [source setPromisedDragTIFFDataSource:imageFromElement(element)];
+        else if (element)
+            [self setData:[element _imageTIFFRepresentation] forType:NSTIFFPboardType];
+    }
+    
+    if (archive)
+        if ([types containsObject:WebArchivePboardType])
+            [self setData:[archive data] forType:WebArchivePboardType];
+    else {
+        // We should not have declared types that we aren't going to write (4031826).
+        ASSERT(![types containsObject:NSRTFDPboardType]);
+        ASSERT(![types containsObject:WebArchivePboardType]);
+    }
+}
+
+- (id)_web_declareAndWriteDragImageForElement:(DOMElement *)element
+                                       URL:(NSURL *)URL 
+                                     title:(NSString *)title
+                                   archive:(WebArchive *)archive
+                                    source:(WebHTMLView *)source
+{
+    ASSERT(self == [NSPasteboard pasteboardWithName:NSDragPboard]);
+
+    NSString *extension = @"";
+    if (RenderObject* renderer = core(element)->renderer()) {
+        if (renderer->isImage()) {
+            if (CachedImage* image = toRenderImage(renderer)->cachedImage()) {
+                extension = image->image()->filenameExtension();
+                if (![extension length])
+                    return 0;
+            }
+        }
+    }
+
+    NSMutableArray *types = [[NSMutableArray alloc] initWithObjects:NSFilesPromisePboardType, nil];
+    [types addObjectsFromArray:[NSPasteboard _web_writableTypesForImageIncludingArchive:(archive != nil)]];
+    [self declareTypes:types owner:source];    
+    [self _web_writeImage:nil element:element URL:URL title:title archive:archive types:types source:source];
+    [types release];
+
+    NSArray *extensions = [[NSArray alloc] initWithObjects:extension, nil];
+    [self setPropertyList:extensions forType:NSFilesPromisePboardType];
+    [extensions release];
+
+    return source;
+}
+
+@end