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Re: LSIsAppleDefaultForType

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Re: LSIsAppleDefaultForType

Subject: Re: LSIsAppleDefaultForType
From: Matt Gough <email@hidden>
Date: Wed, 14 Jun 2006 00:07:02 +0100


On 13 Jun 2006, at 23:32, Matt Neuburg wrote:

I did a search at developer.apple.com on "LSIsAppleDefaultForType". The results included only one document, which *uses* this as an info.plist key but does not explain what it does. Does anyone know what it does? Thx -

This is my interpretation (A snippet from Preview's plist is helpful here:)

	<key>CFBundleDocumentTypes</key>
	<array>
		<dict>
			<key>CFBundleTypeExtensions</key>
			<array>
				<string>pdf</string>
				<string>PDF</string>
			</array>
			<key>CFBundleTypeIconFile</key>
			<string>pdf.icns</string>
			<key>CFBundleTypeMIMETypes</key>
			<array>
				<string>application/pdf</string>
			</array>
			<key>CFBundleTypeName</key>
			<string>NSPDFPboardType</string>
			<key>CFBundleTypeOSTypes</key>
			<array>
				<string>PDF </string>
			</array>
			<key>CFBundleTypeRole</key>
			<string>Editor</string>
			<key>LSIsAppleDefaultForType</key>
			<true/>
			<key>LSItemContentTypes</key>
			<array>
				<string>com.adobe.pdf</string>
			</array>
			<key>NSDocumentClass</key>
			<string>PVPDFDocument</string>
		</dict>
		<dict>
			<key>CFBundleTypeExtensions</key>
			<array>
				<string>ai</string>
				<string>AI</string>
			</array>
			<key>CFBundleTypeIconFile</key>
			<string>pdf.icns</string>
			<key>CFBundleTypeMIMETypes</key>
			<array>
				<string>application/pdf</string>
			</array>
			<key>CFBundleTypeName</key>
			<string>NSPDFPboardType</string>
			<key>CFBundleTypeRole</key>
			<string>Viewer</string>
			<key>LSIsAppleDefaultForType</key>
			<false/>
			<key>NSDocumentClass</key>
			<string>PVPDFDocument</string>
		</dict>
		....

You can see that for pdf files, it is true, but for ai (Illustrator files) it is false. Basically this is a way for Launch Services to 'know' which application should be considered the default default app for a given type without having to hard-code that info into the system. AFAIK it is only ever set on Apple's own Apps and should probably be considered private.

You might want to repost to carbon-dev as some of the Launch Services guys hang out over there.

Matt Gough

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  >LSIsAppleDefaultForType (From: Matt Neuburg <email@hidden>)




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