I need to copy the complete content of general NSPasteboard to a pasteboard with specified name. I tried this code:
- (void)copyFromGeneralPasteboard {
NSMutableArray *archive = [[NSMutableArray alloc] init];
NSArray *typeArray = [[NSPasteboard generalPasteboard] types];
NSPasteboard *myPasteboard = [NSPasteboard pasteboardWithName:#"SpecialPb"];
[myPasteboard declareTypes:typeArray owner:self];
for (NSPasteboardItem *item in [[NSPasteboard generalPasteboard] pasteboardItems])
{
NSPasteboardItem *archivedItem = [[NSPasteboardItem alloc] init];
for (NSString *type in [item types])
{
NSData *data=[[item dataForType:type] mutableCopy];
if (data) {
[archivedItem setData:data forType:type];
}
}
[archive addObject:archivedItem];
}
[[NSPasteboard generalPasteboard] clearContents];
[myPasteboard writeObjects:archive];
[archive removeAllObjects];}
and I am using this code to check.
- (void)SendToGeneralPasteboard {
NSMutableArray *archive = [[NSMutableArray alloc] init];
for (NSPasteboardItem *item in [[NSPasteboard pasteboardWithName:#"SpecialPb"] pasteboardItems])
{
NSPasteboardItem *archivedItem = [[NSPasteboardItem alloc] init];
for (NSString *type in [item types])
{
NSData *data=[[item dataForType:type] mutableCopy];
if (data) {
[archivedItem setData:data forType:type];
}
}
[archive addObject:archivedItem];
}
[[NSPasteboard generalPasteboard] writeObjects:archive];}
So, I performed a test using IWork Pages and it works with text and attributed text. But, when I tried to run with text and image, the program just copy and paste the text. Besides, I tried to run using just image, it woks too.
Could you tell me how can I use my code with any type of data? Thanks.
I realize this is an old question, but I was working with similar stuff today so I thought I'd answer this in case anybody else is looking.
Since you're just trying to copy the complete contents from one pasteboard to another, there's no need to mess around with NSPasteboardItem. Just iterate all the typed data in one pasteboard and write it to another. Concise example in Swift:
func copyItemsFromPasteboard(_ fromPasteboard: NSPasteboard, toPasteboard: NSPasteboard) {
for thisType in fromPasteboard.types ?? [] {
let thisData = fromPasteboard.data(forType: thisType) ?? Data()
toPasteboard.setData(thisData, forType: thisType)
}
}
let generalPB = NSPasteboard(name: .generalPboard)
let customPB = NSPasteboard(name: NSPasteboard.Name(rawValue: "com.example.custom"))
copyItemsFromPasteboard(generalPB, toPasteboard: customPB)
I hope this helps somebody!
Related
I'm using a WebView in edit mode. I have implemented this method from WebUIDelegate Procotol:
- (void)webView:(WebView *)sender willPerformDragDestinationAction:(WebDragDestinationAction)action forDraggingInfo:(id < NSDraggingInfo >)draggingInfo
and use it to catch the drops of elements on my WebView. When I detect a file being dragged from outside my app, and containing a picture, I build in this method the img DOM element and add it to my document.
This works fine, but as the method's name implies, I am only informed that the drag will happen, and I have no control over it.
As the Finder always does file drag operation, what normally happens when dropping a file on a WebView in editing mode is the webview displays the path of the file.
I end up having the file path string added to my webview, and the image too, but I would like to prevent the text from being added.
Is there any way to configure this without subclassing webview?
I tried it and while it works, it breaks plenty of other things like caret moving for the drop and such.
Answering this myself for a change!
- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
{
if ([sender draggingSource] == nil)
{
NSPasteboard *pboard = [sender draggingPasteboard];
if ( [[pboard types] containsObject:NSFilenamesPboardType] ) {
NSURL* fileURL;
fileURL=[NSURL URLFromPasteboard: [sender draggingPasteboard]];
NSArray *dragTypes = [NSArray arrayWithObject:NSFileContentsPboardType];
[[sender draggingPasteboard] declareTypes:dragTypes owner:nil];
NSImage *content = [[NSImage alloc] initWithContentsOfURL:fileURL];
[[sender draggingPasteboard] setData:[content TIFFRepresentation] forType:NSPasteboardTypeTIFF];
}
}
return [super performDragOperation:sender];
}
Actually, what I did was indeed to subclass the WebView and intercept the performDragOperation to change the content of the dragging pasteboard, if the dragging source is outside of my app and doesn't contain already an image but only a filename.
I ran into the same issue.
What I found is that subclassing the view is the best place for this to insert the image data into the pasteboard. Here is how I am doing it for multiple files:
- (BOOL) performDragOperation:(id<NSDraggingInfo>)sender {
if ( [sender draggingSource] == nil ) {
NSPasteboard *pboard = [sender draggingPasteboard];
NSArray *classes = #[ [NSURL class] ];
NSDictionary *options = #{ NSPasteboardURLReadingFileURLsOnlyKey: [NSNumber numberWithBool:YES],
NSPasteboardURLReadingContentsConformToTypesKey: [NSImage imageTypes] };
NSArray *fileURLs = [pboard readObjectsForClasses:classes options:options];
if ( fileURLs ) {
NSMutableArray *images = [NSMutableArray arrayWithCapacity:[fileURLs count]];
for ( NSURL *fileURL in fileURLs )
[images addObject:[[NSImage alloc] initWithContentsOfURL:fileURL]];
[pboard declareTypes:[NSImage imageTypes] owner:nil];
[pboard clearContents]; [pboard writeObjects:images];
}
} return [super performDragOperation:sender];
}
What I noticed is the following sequence:
1. WebView captures drag operation.
2. Internal WebCore created document fragment
3. Node is inserted into a DOMRange
4. Editing Delegate is called
5. Lastly UI Delegate is called where it is too late to do anything
Also, I suggest setting the following via the UI Delegate:
- (NSUInteger) webView:(WebView *)webView dragDestinationActionMaskForDraggingInfo:(id <NSDraggingInfo>)draggingInfo {
return WebDragDestinationActionEdit;
}
Ok, now the ISSUE I am running into and I really hope you might have an answer for me. When I select one file no problem. When I select multiple files, I get them and add all of them into the pasteboard properly. Even when I get to (5) for the UIDelegate and inspect the draggingPasteboard for its count I get what is expected. But unfortunately the document fragment is only being created once and likewise only one node gets inserted.
Any ideas how to get multiple fragments to be created so that they can all be inserted?
Thank you in advance.
Fixed version for the previous replies, this code works for multiple images dragged in the web view.
- (BOOL)performDragOperation:(id<NSDraggingInfo>)sender
{
if ( [sender draggingSource] == nil )
{
NSPasteboard *pboard = [sender draggingPasteboard];
NSArray *classes = #[ [NSURL class] ];
NSDictionary *options = #{ NSPasteboardURLReadingFileURLsOnlyKey: [NSNumber numberWithBool:YES],
NSPasteboardURLReadingContentsConformToTypesKey: [NSImage imageTypes] };
NSArray *fileURLs = [pboard readObjectsForClasses:classes options:options];
if(fileURLs)
{
NSArray* filenames = [pboard propertyListForType: NSFilenamesPboardType];
NSMutableString* html = [NSMutableString string];
for(NSString* filename in filenames) {
[html appendFormat: #"<img src=\"%#\"/>", [[[NSURL alloc] initFileURLWithPath: filename] absoluteString]];
}
[pboard declareTypes: [NSArray arrayWithObject: NSHTMLPboardType] owner: self];
[pboard setString: html forType: NSHTMLPboardType];
}
} return [super performDragOperation:sender];
}
we are working on a C++ Qt applciation that copies selected text and/or images from external applications, modifies it and then paste it back. Since we are on Mac, we are doing this part with Objective-C.
We are having problems trying to get an image from the Pasteboard. It works fine for text, but we are not sure about how to handle images or combination of text+image.
Since we dont know what the user might select, we should be able to perform a generic retrieval of content of the pasteboard to modify it and putting it back in the pasteboard.
We've try this:
//we thought about retrieving some generic item from pasteboard, using NSPasteboardItem
NSArray *classes = [[NSArray alloc] initWithObjects:[NSPasteboardItem class], nil];
NSDictionary *options = [NSDictionary dictionary];
NSArray *auxArray = [[NSPasteboard generalPasteboard] readObjectsForClasses:classes options:options];
NSData *archived_data = [auxArray objectAtIndex:0];
Our solution for handling text was:
NSString *text = [[NSPasteoard generalPasteboard] stringForType:NSStringPboardType];
string text_str = string([text UTF8String]);
It didnt work, so, How can we get the user selection from the pasteboard?
We need to get the raw bytes or rtf content in order to modify it as we need, and then putting it back in the pasteboard and paste it back replacing the original user selection.
Thanks!
I think this function will help you
- (IBAction)paste:sender
{
NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
NSArray *classArray = [NSArray arrayWithObject:[NSImage class]];
NSDictionary *options = [NSDictionary dictionary];
BOOL ok = [pasteboard canReadObjectForClasses:classArray options:options];
if (ok)
{
NSArray *objectsToPaste = [pasteboard readObjectsForClasses:classArray options:options];
NSImage *image = [objectsToPaste objectAtIndex:0];
[imageView setImage:image];
}
}
I'm using the function below to set new rtfd data to an attribute of type binary in a core data entity.
If its not equal, then I set the data to the managed object.
The problem here is that the equality only works when the rtfd data is only text. When there are pictures attached this method is returning false.
-(BOOL)setRTFData:(NSData*)data forKey:(NSString*)key
{
NSData *actualData = [self getDataValueForKey:key];
NSDictionary *dict = nil;
NSAttributedString *actualAttribString = [[NSAttributedString alloc] initWithRTFD:actualData documentAttributes:&dict];
NSAttributedString *newAttribString = [[NSAttributedString alloc] initWithRTFD:data documentAttributes:&dict];
BOOL isEqual = [actualAttribString isEqualToAttributedString:newAttribString];
[actualAttribString release];
[newAttribString release];
if (!isEqual)
{
[self willChangeValueForKey:key];
[self setPrimitiveValue:data forKey:key];
[self didChangeValueForKey:key];
return TRUE;
}
return FALSE;
}
this is how I get my *rtfd data*from a NSTextView:
NSData* data = [notesTextField RTFDFromRange:NSMakeRange(0,[[notesTextField textStorage] length])];
I'm using sdk 10.7
I have a Cocoa Webview subclass, and I need to make all text copied from it be plaintext only. I have tried overriding -copy and -pasteboardTypesForSelection, but no luck, and debugging code seems to indicate that those methods are never called. I've also tried setting -webkit-user-modify to read-write-plaintext-only in the css (this would also work in this situation) but that seemed to have no effect.
Any ideas?
Okay this seems to work (with the subclass instance as its own editing delegate):
- (BOOL)webView:(WebView *)webView doCommandBySelector:(SEL)command
{
if (command == #selector(copy:)) {
NSString *markup = [[self selectedDOMRange] markupString];
NSData *data = [markup dataUsingEncoding: NSUTF8StringEncoding];
NSNumber *n = [NSNumber numberWithUnsignedInteger: NSUTF8StringEncoding];
NSDictionary *options = [NSDictionary dictionaryWithObject:n forKey: NSCharacterEncodingDocumentOption];
NSAttributedString *as = [[NSAttributedString alloc] initWithHTML:data options:options documentAttributes: NULL];
NSString *selectedString = [as string];
[as autorelease];
NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
[pasteboard clearContents];
NSArray *objectsToCopy = [NSArray arrayWithObject: selectedString];
[pasteboard writeObjects:objectsToCopy];
return YES;
}
return NO;
}
Not sure if this is the best way.
Help me please with the following problem:
- (NSDictionary *)getGamesList
{
NSMutableDictionary *gamesDictionary = [[NSMutableDictionary dictionary] retain];
// I was trying to change this on the commented code below, but did have no effect
// NSMutableDictionary *gamesDictionary = [[NSMutableDictionary alloc] init];
// [gamesDictionary retain];
while (sqlite3_step(statement) == SQLITE_ROW)
{
NSString *key = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)];
NSArray *gameDate = [key componentsSeparatedByString:#" "];
NSNumber *_id = [[NSNumber alloc] initWithInt:sqlite3_column_int(statement, 0)];
NSString *date_time = [NSString stringWithFormat:#"%#, %#",[gameDate objectAtIndex:0],[gameDate objectAtIndex:2]];
if (![gamesDictionary valueForKey:date_time]) [gamesDictionary setValue:[NSMutableArray array] forKey:date_time];
[[gamesDictionary valueForKey:date_time] addObject:[[_id copy] autorelease]];
[_id release];
}
sqlite3_reset(statement);
return gamesDictionary;
}
The leak starts in another method of another class, there the getGamesList method is called, like this:
NSMutableDictionary *gamesDictionary;
gamesDictionary = [[NSMutableDictionary dictionaryWithDictionary:[appDelegate getGamesList]] retain];
After that there are a lot of leaks that points to NSCFArray in the string:
NSArray *keys = [[NSArray arrayWithArray:[gamesDictionary allKeys]] retain];
in this method:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSArray *keys = [[NSArray arrayWithArray:[gamesDictionary allKeys]] retain];
if ([keys count] != 0) return [[keys objectAtIndex:section] uppercaseString];
return #"";
}
I assume these things are connected to each other, but I still can not understand all of the memory management tips.
Thanks a lot!
Didn't use Cocoa for years (that's why I can't tell you an exact answer :/). But I guess your problem is that you systematically use retain on your objects.
Since the object reference count never get to 0, all dictionaries are keep in memory and not freed.
Try to remove the retain on [NSArray arrayWithArray] and [NSMutableDictionary dictionaryWithDictionary
http://en.wikibooks.org/wiki/Programming_Mac_OS_X_with_Cocoa_for_beginners/Some_Cocoa_essential_principles#Retain_and_Release
It does look like you are over-retaining your array.
When you create the gamesDictionary it is created with an retain count of +1. You then retain it (count becomes +2). When you get the value outside this function you retain again (count becomes +3).
You are correct that if you create an object you are responsible for it's memory management. Also, when you get an object from a method, you should retain it if you want to keep it around for longer than the span of the function. In your case, you just want to get at some of the properties of the object, so you don't need to retain it.
Here is a suggestion:
- (NSDictionary *)getGamesList
{
NSMutableDictionary *gamesDictionary = [NSMutableDictionary dictionary]; // Remove the retain.
while (sqlite3_step(statement) == SQLITE_ROW)
{
NSString *key = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)];
NSArray *gameDate = [key componentsSeparatedByString:#" "];
NSNumber *_id = [[NSNumber alloc] initWithInt:sqlite3_column_int(statement, 0)];
NSString *date_time = [NSString stringWithFormat:#"%#, %#",[gameDate objectAtIndex:0],[gameDate objectAtIndex:2]];
if (![gamesDictionary valueForKey:date_time]) [gamesDictionary setValue:[NSMutableArray array] forKey:date_time];
[[gamesDictionary valueForKey:date_time] addObject:[[_id copy] autorelease]];
[_id release];
}
sqlite3_reset(statement);
return gamesDictionary;
}
This next bit is messy. you create a new dictionary and retain it. The original dictionary is not autoreleased, so the count isn't decremented and it always hangs around. Just assign the dictionary rather than create a new one.
NSMutableDictionary *gamesDictionary = [[appDelegate getGamesList] retain];
// Retaining it, becuase it looks like it's used elsewhere.
Now, in this method:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSString *returnString;
// Don't need to retain the keys because you are only using it within the function
// and since you didn't alloc, copy or retain the array it contains, you aren't responsible for it's memory management.
NSArray *keys = [NSArray arrayWithArray:[gamesDictionary allKeys]];
if ([keys count] != 0) {
returnString = [[NSString alloc] initWithString:[[keys objectAtIndex:section] uppercaseString]];
return [returnString autorelease];
}
return #"";
}