mirror of
https://github.com/gnustep/libs-gui.git
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More documentation updates and initial implementation of some filtering code
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@17051 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-Macdonald
parent
47bcd510bb
commit
a1336268a7
3 changed files with 317 additions and 87 deletions
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@ -4,7 +4,8 @@
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writing fiels to pastebaords, implemented ([+typesFilterableTo:])
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wrote (partial implementation ...) the unimplemented filters stuff.
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* Source/GSServicesManager.m: helpers for filters.
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* Headers/AppKit/GSPasteboard.h: Removed unused methods.
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* Headers/AppKit/GSPasteboard.h: Removed unused methods, added
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documentation.
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2003-06-26 Ludovic Marcotte <ludovic@Sophos.ca>
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@ -7,6 +7,7 @@
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Author: Scott Christley <scottc@net-community.com>
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Date: 1996
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Author: Richard Frith-Macdonald <rfm@gnu.org>
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This file is part of the GNUstep GUI Library.
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@ -38,137 +39,204 @@
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@class NSData;
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@class NSFileWrapper;
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//
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// Pasteboard Type Globals
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//
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/**
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* Pasteboard contains string data as written by
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* [NSPasteboard-setString:forType:] or [NSPasteboard-setPropertyList:forType:]
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*/
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APPKIT_EXPORT NSString *NSStringPboardType;
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/**
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* Pasteboard contains string color information
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*/
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APPKIT_EXPORT NSString *NSColorPboardType;
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APPKIT_EXPORT NSString *NSFileContentsPboardType;
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APPKIT_EXPORT NSString *NSFilenamesPboardType;
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/**
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* Pasteboard contains font color information
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*/
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APPKIT_EXPORT NSString *NSFontPboardType;
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/**
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* Pasteboard contains ruler color information
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*/
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APPKIT_EXPORT NSString *NSRulerPboardType;
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/**
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* Pasteboard contains postscript code
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*/
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APPKIT_EXPORT NSString *NSPostScriptPboardType;
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/**
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* Pasteboard contains tabular text.
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*/
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APPKIT_EXPORT NSString *NSTabularTextPboardType;
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/**
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* Pasteboard contains text in rich text format.
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*/
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APPKIT_EXPORT NSString *NSRTFPboardType;
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/**
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* Pasteboard contains text in rich text format with additional info
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*/
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APPKIT_EXPORT NSString *NSRTFDPboardType;
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/**
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* Pasteboard contains a TIFF image
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*/
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APPKIT_EXPORT NSString *NSTIFFPboardType;
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/**
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* Pasteboard contains a link to data in some document
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*/
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APPKIT_EXPORT NSString *NSDataLinkPboardType;
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/**
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* Pasteboard contains general binary data
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*/
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APPKIT_EXPORT NSString *NSGeneralPboardType;
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#ifndef STRICT_OPENSTEP
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/**
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* Pasteboard contains a PDF document
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*/
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APPKIT_EXPORT NSString *NSPDFPboardType;
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/**
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* Pasteboard contains a PICT diagram document
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*/
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APPKIT_EXPORT NSString *NSPICTPboardType;
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/**
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* Pasteboard contains a URL
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*/
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APPKIT_EXPORT NSString *NSURLPboardType;
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/**
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* Pasteboard contains HTML data
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*/
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APPKIT_EXPORT NSString *NSHTMLPboardType;
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#endif
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//
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// Pasteboard Name Globals
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//
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/**
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* The pasteboard used for drag and drop information.
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*/
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APPKIT_EXPORT NSString *NSDragPboard;
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/**
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* The pasteboard used search and replace editing operations.
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*/
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APPKIT_EXPORT NSString *NSFindPboard;
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/**
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* The pasteboard used for cutting and pasting font information.
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*/
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APPKIT_EXPORT NSString *NSFontPboard;
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/**
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* The general purpose pasteboard (mostly used for sut and paste)
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*/
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APPKIT_EXPORT NSString *NSGeneralPboard;
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/**
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* The pasteboard used for cutting and pasting ruler information.
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*/
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APPKIT_EXPORT NSString *NSRulerPboard;
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//
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// Pasteboard Exceptions
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//
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/**
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* Exception raised when communication with the pasteboard server fails.
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*/
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APPKIT_EXPORT NSString *NSPasteboardCommunicationException;
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@interface NSPasteboard : NSObject
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{
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NSString* name; // The name of this pasteboard.
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int changeCount; // What we think the current count is.
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id target; // Proxy to the object in the server.
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id owner; // Local pasteboard owner.
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BOOL useHistory; // Want strict OPENSTEP?
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NSString *name; // The name of this pasteboard.
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int changeCount; // What we think the current count is.
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id target; // Proxy to the object in the server.
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id owner; // Local pasteboard owner.
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BOOL useHistory; // Want strict OPENSTEP?
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}
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//
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// Creating and Releasing an NSPasteboard Object
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//
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+ (NSPasteboard *)generalPasteboard;
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+ (NSPasteboard *)pasteboardWithName:(NSString *)aName;
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+ (NSPasteboard *)pasteboardWithUniqueName;
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- (void)releaseGlobally;
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+ (NSPasteboard*) generalPasteboard;
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+ (NSPasteboard*) pasteboardWithName: (NSString*)aName;
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+ (NSPasteboard*) pasteboardWithUniqueName;
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- (void) releaseGlobally;
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//
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// Getting Data in Different Formats
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//
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+ (NSPasteboard *)pasteboardByFilteringData:(NSData *)data
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ofType:(NSString *)type;
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+ (NSPasteboard *)pasteboardByFilteringFile:(NSString *)filename;
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+ (NSPasteboard *)pasteboardByFilteringTypesInPasteboard:(NSPasteboard *)pboard;
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+ (NSArray *)typesFilterableTo:(NSString *)type;
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+ (NSPasteboard*) pasteboardByFilteringData: (NSData*)data
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ofType: (NSString*)type;
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+ (NSPasteboard*) pasteboardByFilteringFile: (NSString*)filename;
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+ (NSPasteboard*) pasteboardByFilteringTypesInPasteboard: (NSPasteboard*)pboard;
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+ (NSArray*) typesFilterableTo: (NSString*)type;
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//
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// Referring to a Pasteboard by Name
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//
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- (NSString *)name;
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- (NSString*) name;
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//
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// Writing Data
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//
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- (int)addTypes:(NSArray *)newTypes
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owner:(id)newOwner;
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- (int)declareTypes:(NSArray *)newTypes
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owner:(id)newOwner;
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- (BOOL)setData:(NSData *)data
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forType:(NSString *)dataType;
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- (BOOL)setPropertyList:(id)propertyList
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forType:(NSString *)dataType;
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- (BOOL)setString:(NSString *)string
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forType:(NSString *)dataType;
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- (BOOL)writeFileContents:(NSString *)filename;
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- (BOOL)writeFileWrapper:(NSFileWrapper *)wrapper;
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- (int) addTypes: (NSArray*)newTypes
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owner: (id)newOwner;
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- (int) declareTypes: (NSArray*)newTypes
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owner: (id)newOwner;
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- (BOOL) setData: (NSData*)data
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forType: (NSString*)dataType;
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- (BOOL) setPropertyList: (id)propertyList
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forType: (NSString*)dataType;
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- (BOOL) setString: (NSString*)string
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forType: (NSString*)dataType;
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- (BOOL) writeFileContents: (NSString*)filename;
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- (BOOL) writeFileWrapper: (NSFileWrapper*)wrapper;
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//
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// Determining Types
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//
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- (NSString *)availableTypeFromArray:(NSArray *)types;
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- (NSArray *)types;
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- (NSString*) availableTypeFromArray: (NSArray*)types;
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- (NSArray*) types;
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//
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// Reading Data
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//
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- (int)changeCount;
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- (NSData *)dataForType:(NSString *)dataType;
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- (id)propertyListForType:(NSString *)dataType;
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- (NSString *)readFileContentsType:(NSString *)type
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toFile:(NSString *)filename;
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- (NSFileWrapper *)readFileWrapper;
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- (NSString *)stringForType:(NSString *)dataType;
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- (int) changeCount;
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- (NSData*) dataForType: (NSString*)dataType;
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- (id) propertyListForType: (NSString*)dataType;
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- (NSString*) readFileContentsType: (NSString*)type
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toFile: (NSString*)filename;
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- (NSFileWrapper*) readFileWrapper;
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- (NSString*) stringForType: (NSString*)dataType;
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@end
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@interface NSObject (NSPasteboardOwner)
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//
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// Methods Implemented by the Owner
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//
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- (void)pasteboard:(NSPasteboard *)sender
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provideDataForType:(NSString *)type;
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- (void)pasteboard:(NSPasteboard *)sender
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provideDataForType:(NSString *)type
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andVersion:(int)ver;
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- (void)pasteboardChangedOwner:(NSPasteboard *)sender;
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- (void) pasteboard: (NSPasteboard*)sender
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provideDataForType: (NSString*)type;
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- (void) pasteboard: (NSPasteboard*)sender
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provideDataForType: (NSString*)type
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andVersion: (int)version;
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- (void) pasteboardChangedOwner: (NSPasteboard*)sender;
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@end
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@interface NSPasteboard (GNUstepExtensions)
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+ (NSString *) mimeTypeForPasteboardType: (NSString *)type;
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+ (NSString *) pasteboardTypeForMimeType: (NSString *)mimeType;
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- (void)setChangeCount: (int)count;
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+ (NSString*) mimeTypeForPasteboardType: (NSString*)type;
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+ (NSString*) pasteboardTypeForMimeType: (NSString*)mimeType;
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- (void) setChangeCount: (int)count;
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@end
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#ifndef STRICT_OPENSTEP
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#include <Foundation/NSURL.h>
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@interface NSURL (NSPasteboard)
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+ (NSURL *) URLFromPasteboard: (NSPasteboard *)pasteBoard;
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- (void) writeToPasteboard: (NSPasteboard *)pasteBoard;
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+ (NSURL*) URLFromPasteboard: (NSPasteboard*)pasteBoard;
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- (void) writeToPasteboard: (NSPasteboard*)pasteBoard;
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@end
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#endif
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@ -176,7 +244,7 @@ provideDataForType:(NSString *)type
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// Return File-related Pasteboard Types
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//
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APPKIT_EXPORT NSString *NSCreateFileContentsPboardType(NSString *fileType);
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APPKIT_EXPORT NSString *NSCreateFilenamePboardType(NSString *filename);
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APPKIT_EXPORT NSString *NSCreateFilenamePboardType(NSString *fileType);
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APPKIT_EXPORT NSString *NSGetFileType(NSString *pboardType);
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APPKIT_EXPORT NSArray *NSGetFileTypes(NSArray *pboardTypes);
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@ -55,6 +55,9 @@
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#include "gnustep/gui/GSServicesManager.h"
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#include "gnustep/gui/GSPasteboardServer.h"
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static NSString *contentsPrefix = @"NSTypedFileContentsPboardType:";
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static NSString *namePrefix = @"NSTypedFilenamesPboardType:";
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/*
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* A pasteboard class for lazily filtering data
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*/
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@ -62,8 +65,8 @@
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{
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@public
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NSArray *originalTypes;
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NSData *data;
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NSString *file;
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NSData *data;
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NSPasteboard *pboard;
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}
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@end
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@ -136,7 +139,6 @@
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{
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DESTROY(originalTypes);
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DESTROY(data);
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DESTROY(file);
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DESTROY(pboard);
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[super dealloc];
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}
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@ -205,13 +207,80 @@
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if ([mechanism isEqualToString: @"NSUnixStdio"] == YES)
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{
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// FIXME
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NSMutableData *m = [NSMutableData dataWithCapacity: 1023];
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NSString *filename;
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NSData *d;
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NSPipe *p;
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NSTask *t;
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id o;
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/*
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* The data for an NSUnixStdio filter must be one or more filenames
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*/
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if ([type isEqualToString: NSFilenamesPboardType] == NO
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&& [type hasPrefix: namePrefix] == NO)
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{
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[sender setData: [NSData data] forType: type];
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return; // Not the name of a file to filter.
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}
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if (data != nil)
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{
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d = data;
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}
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else if (file != nil)
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{
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d = [NSData dataWithContentsOfFile: file];
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}
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else
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{
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d = [pboard dataForType: fromType];
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}
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o = [NSDeserializer deserializePropertyListFromData: d
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mutableContainers: NO];
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if ([o isKindOfClass: [NSString class]] == YES)
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{
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filename = o;
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}
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else if ([o isKindOfClass: [NSArray class]] == YES
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&& [o count] > 0
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&& [[o objectAtIndex: 0] isKindOfClass: [NSString class]] == YES)
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{
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filename = [o objectAtIndex: 0];
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}
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else
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{
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[sender setData: [NSData data] forType: type];
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return; // Not the name of a file to filter.
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}
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/*
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* Set up and launch task to filter the named file.
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*/
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t = [NSTask new];
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[t setLaunchPath: [info objectForKey: @"NSPortName"]];
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[t setArguments: [NSArray arrayWithObject: filename]];
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p = [NSPipe pipe];
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[t setStandardOutput: p];
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[t launch];
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/*
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* Read all the data that the task writes.
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*/
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while ((d = [[p fileHandleForReading] availableData]) != nil)
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{
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[m appendData: d];
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}
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[t waitUntilExit];
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RELEASE(t);
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/*
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* And send it on.
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*/
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[sender setData: m forType: type];
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}
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else if ([mechanism isEqualToString: @"NSMapFile"] == YES)
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{
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// FIXME
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}
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else if ([mechanism isEqualToString: @"NSIdentity"] == YES)
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else if ([mechanism isEqualToString: @"NSIdentity"] == YES
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|| [mechanism isEqualToString: @"NSMapFile"] == YES)
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{
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/*
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* An 'identity' filter simply places the required data on the
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@ -278,6 +347,38 @@
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- (id) _target;
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@end
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/**
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* <p>The pasteboard system is the primary mechanism for data exchange
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* between OpenStep applications. It is used for cut and paste of data,
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* as the exchange mechanism for <em>services</em> (as listed on the
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* services menu), for communicating with a spelling server in order to
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* perform spell checking, and for <em>filter services</em> which convert
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* data of one typ to another transparently.
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* </p>
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* <p>Pasteboards are identified by names, some of which are standard
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* and are intended to exist permenantly and be shared between all
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* applications, others are temporary or private and are used to handle
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* specific services.
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* </p>
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* <p>All data transferred to/from pasteboards is <em>typed</em>. Mostly
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* using one of several standard types for common data or using standardised
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* names which identify particular kinds of files and their contents
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* (see the NSCreateFileContentsPboardType() an
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* NSCreateFilenamePboardType() functions for details). It is also possible
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* for cooperating applications to use their own private types ... any string
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||||
* value will do.
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||||
* </p>
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||||
* <p>Each pasteboard has an <em>owner</em> ... an object which declares the
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* types of data it can provide. That object is responsible for producing
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* the data for the pasteboard when it is called for (or it may send all
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* formats of data it supports to the pastebaord system before any other
|
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* application calls for it).<br />
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* The pasteboard owner needs to implement the
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* -pasteboard:provideDataForType: and -pasteboardChangedOwner: methods,
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* and for extended (GNUstep specific) pastebaord support may implement
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* -pasteboard:provideDataForType:andVersion: too.
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* </p>
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||||
*/
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@implementation NSPasteboard
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static NSLock *dictionary_lock = nil;
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@ -577,12 +678,13 @@ static NSMapTable *mimeMap = NULL;
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}
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/**
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* <p>Returns a pasteboard from which the data (of the specified type)
|
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* can be read in all the types to which it can be converted by
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* filter services.
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* <p>Creates and returns a pasteboard from which the data in the named
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* file can be read in all the types to which it can be converted by
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* filter services.<br />
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* The type of data in the file is inferred from the file extension.
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* </p>
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||||
* <p>Also registers the pasteboard as providing information of the
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* specified type.
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||||
* <p>No filtering is actually performed until some object asks the
|
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* pasteboard for the data, so calling this method is quite inexpensive.
|
||||
* </p>
|
||||
*/
|
||||
+ (NSPasteboard*) pasteboardByFilteringData: (NSData*)data
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|
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@ -1152,26 +1254,51 @@ static NSMapTable *mimeMap = NULL;
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return s;
|
||||
}
|
||||
|
||||
/*
|
||||
* Methods Implemented by the Owner
|
||||
@end
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Methods to be implemented by pastebaord owners.
|
||||
*/
|
||||
@implementation NSObject (NSPasteboardOwner)
|
||||
/**
|
||||
* This method is called by the pasteboard system when it does not have
|
||||
* the data that has been asked for ... the pasteboard owner should
|
||||
* supply the data to the pasteboard by calling -setData:forType: or one
|
||||
* of the related methods.
|
||||
*/
|
||||
- (void) pasteboard: (NSPasteboard*)sender
|
||||
provideDataForType: (NSString*)type
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* Implemented where GNUstep pasteboard extensions are required.<br />
|
||||
* This method is called by the pasteboard system when it does not have
|
||||
* the data that has been asked for ... the pasteboard owner should
|
||||
* supply the data to the pasteboard by calling -setData:forType: or one
|
||||
* of the related methods.
|
||||
*/
|
||||
- (void) pasteboard: (NSPasteboard*)sender
|
||||
provideDataForType: (NSString*)type
|
||||
andVersion: (int)version
|
||||
{
|
||||
}
|
||||
|
||||
/**
|
||||
* This method is called by the pasteboard system when another object
|
||||
* takes ownership of the pasteboard ... it lets the previous owner
|
||||
* know that it is no longer required to supply data.
|
||||
*/
|
||||
- (void) pasteboardChangedOwner: (NSPasteboard*)sender
|
||||
{
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
|
||||
@implementation NSPasteboard (GNUstepExtensions)
|
||||
|
||||
/**
|
||||
|
|
@ -1292,35 +1419,65 @@ static NSMapTable *mimeMap = NULL;
|
|||
- (void) writeToPasteboard: (NSPasteboard *)pasteBoard
|
||||
{
|
||||
[pasteBoard setString: [self absoluteString]
|
||||
forType: NSURLPboardType];
|
||||
forType: NSURLPboardType];
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
static NSString* contentsPrefix = @"NSTypedFileContentsPboardType:";
|
||||
static NSString* namePrefix = @"NSTypedFilenamesPboardType:";
|
||||
|
||||
/**
|
||||
* Returns a standardised pasteboard type for file contents,
|
||||
* <p>Returns a standardised pasteboard type for file contents,
|
||||
* formed from the supplied file extension.
|
||||
* </p>
|
||||
* <p>Data written to a pastebaord with a file contents type should
|
||||
* be written using the [NSPasteboard-writeFileContents:] or
|
||||
* [NSPasteboard-writeFileWrapper:] method. Similarly, the data should
|
||||
* be read using the [NSPasteboard-readFileContentsType:toFile:] or
|
||||
* [NSPasteboard-readFileWrapper] method.
|
||||
*/
|
||||
NSString*
|
||||
NSCreateFileContentsPboardType(NSString *fileType)
|
||||
{
|
||||
return [NSString stringWithFormat: @"%@%@", contentsPrefix, fileType];
|
||||
NSString *ext = [fileType pathExtension];
|
||||
|
||||
if ([ext length] == 0)
|
||||
{
|
||||
ext = fileType;
|
||||
}
|
||||
return [NSString stringWithFormat: @"%@%@", contentsPrefix, ext];
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a standardised pasteboard type for file names,
|
||||
* <p>Returns a standardised pasteboard type for file names,
|
||||
* formed from the supplied file extension.
|
||||
* </p>
|
||||
* <p>Data written to a pastebaord with a file names type should
|
||||
* be a single name writen using [NSPasteboard-setString:forType:] or
|
||||
* an array of strings written using
|
||||
* [NSPasteboard-setPropertyList:forType:].<br />
|
||||
* Similarly, the data should be read using
|
||||
* the [NSPasteboard-stringForType:] or
|
||||
* [NSPasteboard-propertyListForType:] method.
|
||||
* </p>
|
||||
* <p>See also the NSGetFileType() and NSGetFileTypes() functions.
|
||||
*/
|
||||
NSString*
|
||||
NSCreateFilenamePboardType(NSString *filename)
|
||||
NSCreateFilenamePboardType(NSString *fileType)
|
||||
{
|
||||
return [NSString stringWithFormat: @"%@%@", namePrefix, filename];
|
||||
NSString *ext = [fileType pathExtension];
|
||||
|
||||
if ([ext length] == 0)
|
||||
{
|
||||
ext = fileType;
|
||||
}
|
||||
return [NSString stringWithFormat: @"%@%@", namePrefix, ext];
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the file type (fileType extension) corresponding to the
|
||||
* pasteboard type given.<br />
|
||||
* This is a counterpart to the NSCreateFilenamePboardType() function.
|
||||
*/
|
||||
NSString*
|
||||
NSGetFileType(NSString *pboardType)
|
||||
{
|
||||
|
|
@ -1335,6 +1492,10 @@ NSGetFileType(NSString *pboardType)
|
|||
return nil;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the file types (filename extensions) corresponding to the
|
||||
* pasteboard types given.
|
||||
*/
|
||||
NSArray*
|
||||
NSGetFileTypes(NSArray *pboardTypes)
|
||||
{
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue