KDE 4.2 PyKDE API Reference
KMimeTypeTrader Class Reference
from PyKDE4.kdecore import *
Detailed Description
KDE's trader for services associated to a given mimetype.
Example: say that you want to the list of all KParts components that can handle HTML. Our code would look like:
KServiceOfferList lst = KMimeTypeTrader.self()->query("text/html",
"KParts/ReadOnlyPart");
If you want to get the preferred KParts component for text/html you could use preferredService("text/html", "KParts/ReadOnlyPart"), although if this is about loading that component you would use createPartInstanceFromQuery directly.
- See also:
- KServiceTypeTrader, KService
Methods | |
| __init__ (self) | |
| __init__ (self, KMimeTypeTrader other) | |
| KService.Ptr | preferredService (self, QString mimeType, QString genericServiceType=QString.fromLatin1("Application")) |
| KService.List | query (self, QString mimeType, QString genericServiceType=QString.fromLatin1("Application"), QString constraint=QString()) |
Static Methods | |
| KMimeTypeTrader | self () |
Method Documentation
| __init__ | ( | self ) |
- Internal:
| __init__ | ( | self, | ||
| KMimeTypeTrader | other | |||
| ) |
| KService.Ptr preferredService | ( | self, | ||
| QString | mimeType, | |||
| QString | genericServiceType=QString.fromLatin1("Application") | |||
| ) |
Returns the preferred service for mimeType and genericServiceType
This is almost like offers().first(), except that it also checks if the service is allowed as a preferred service (see KService.allowAsDefault).
- Parameters:
-
mimeType the mime type (see offers()) genericServiceType the service type (see offers())
- Returns:
- the preferred service, or 0 if no service is available
| KService.List query | ( | self, | ||
| QString | mimeType, | |||
| QString | genericServiceType=QString.fromLatin1("Application"), | |||
| QString | constraint=QString() | |||
| ) |
This method returns a list of services which are associated with a given mimetype.
Example usage: To get list of applications that can handle a given mimetype, set genericServiceType to "Application" (which is the default). To get list of embeddable components that can handle a given mimetype, set genericServiceType to "KParts/ReadOnlyPart".
The constraint parameter is used to limit the possible choices returned based on the constraints you give it.
The constraint language is rather full. The most common keywords are AND, OR, NOT, IN, and EXIST, all used in an almost spoken-word form. An example is:
(Type == 'Service') and (('Browser/View' in ServiceTypes) and (exist Library))
The keys used in the query (Type, ServiceTypes, Library) are all fields found in the .desktop files.
- Parameters:
-
mimeType A mime type like 'text/plain' or 'text/html'. genericServiceType a basic service type, like 'KParts/ReadOnlyPart' or 'Application' constraint A constraint to limit the choices returned, QString() to get all services that can handle the given mimetype
- Returns:
- A list of services that satisfy the query, sorted by preference (preferred service first)
- See also:
- http://techbase.kde.org/Development/Tutorials/Services/Traders#The_KTrader_Query_Language
| KMimeTypeTrader self | ( | ) |
This is a static pointer to the KMimeTypeTrader singleton.
You will need to use this to access the KMimeTypeTrader functionality since the constructors are protected.
- Returns:
- Static KMimeTypeTrader instance
