Akonadi.MimeTypeChecker

KDE 4.5 PyKDE API Reference

- KDE's Python API

# MimeTypeChecker Class Reference

`from PyKDE4.akonadi import *`

Namespace: Akonadi

## Detailed Description

Helper for checking MIME types of Collections and Items.

When it is necessary to decide whether an item has a certain MIME type or whether a collection can contain a certain MIME type, direct string comparison might not render the desired result because MIME types can have aliases and be a node in an "inheritance" hierachy.

For example a check like this

     if ( item.mimeType() == QLatin1String( "text/directory" ) )

would fail to detect "text/x-vcard" as being the same MIME type.

Note:
  KDE deals with this inside the KMimeType framework, this class is just a convenience helper for common Akonadi related checks.

Example: Checking whether an Akonadi.Item is contact MIME type

     Akonadi.MimeTypeChecker checker;
     checker.addWantedMimeType( KABC.Addressee.mimeType() );

     if ( checker.isWantedItem( item ) ){
       // item.mimeType() is equal KABC.Addressee.mimeType(), an aliases
       // or a sub type.
     }

Example: Checking whether an Akonadi.Collection could contain calendar items

     Akonadi.MimeTypeChecker checker;
     checker.addWantedMimeType( QLatin1String( "text/calendar" ) );

     if ( checker.isWantedCollection( collection ) ) {
       // collection.contentMimeTypes() contains @c "text/calendar"
       // or a sub type.
     }

Example: Checking whether an Akonadi.Collection could contain Calendar Event items (i.e. KCal.Event), making use of the respective MIME type "subclassing" provided by Akonadi's MIME type extensions.

     Akonadi.MimeTypeChecker checker;
     checker.addWantedMimeType( QLatin1String( "application/x-vnd.akonadi.calendar.event" ) );

     if ( checker.isWantedCollection( collection ) ) {
       // collection.contentMimeTypes() contains @c "application/x-vnd.akonadi.calendar.event"
       // or a sub type, but just containing @c "text/calendar" would not
       // get here
     }

Example: Checking for items of more than one MIME type and treat one of them specially.

     Akonadi.MimeTypeChecker mimeFilter;
     mimeFilter.setWantedMimeTypes( QStringList() << KABC.Addressee.mimeType()
                                    << KABC.ContactGroup.mimeType() );

     if ( mimeFilter.isWantedItem( item ) ) {
       if ( Akonadi.MimeTypeChecker.isWantedItem( item, KABC.ContactGroup.mimeType() ) {
         // treat contact group's differently
       }
     }

This class is implicitly shared.

Author:
  Kevin Krammer <kevin.krammer@gmx.at>

Since:
  4.3

## Methods
| __init__ (self)
| __init__ (self, Akonadi.MimeTypeChecker other)
| addWantedMimeType (self, QString mimeType)
bool | isWantedCollection (self, Akonadi.Collection collection)
bool | isWantedItem (self, Akonadi.Item item)
| removeWantedMimeType (self, QString mimeType)
| setWantedMimeTypes (self, QStringList mimeTypes)
QStringList | wantedMimeTypes (self)
## Static Methods
bool | isWantedCollection (Akonadi.Collection collection, QString wantedMimeType)
bool | isWantedItem (Akonadi.Item item, QString wantedMimeType)

## Method Documentation

__init__ | ( |  | self ) |

Creates an empty MIME type checker.

An empty checker will not report any items or collections as wanted.

__init__ | ( | self, |
|  | Akonadi.MimeTypeChecker | other
| ) |  |  |

Creates a new MIME type checker from an other.

addWantedMimeType | ( | self, |
|  | QString | mimeType
| ) |  |  |

Adds another MIME type to the list of wanted MIME types this instance checks against.

Parameters:

  | mimeType | The MIME types to add to the checklist.

See also:
  setWantedMimeTypes()

bool isWantedCollection | ( | self, |
|  | Akonadi.Collection | collection
| ) |  |  |

Checks whether a given collection has the given MIME type

Parameters:

  | item | The collection to check the content MIME types of.
  | wantedMimeType | The MIME type to check against.

Returns:
  true if one of the collection content MIME types is the given wanted one, false if it isn't, the collection is invalid or has an empty content MIME type list.

See also:
  setWantedMimeTypes()

See also:
  Collection.contentMimeTypes()

bool isWantedItem | ( | self, |
|  | Akonadi.Item | item
| ) |  |  |

Checks whether a given item has the given wanted MIME type

Parameters:

  | item | The item to check the MIME type of.
  | wantedMimeType | The MIME type to check against.

Returns:
  true if the item MIME type is the given one,

false if it isn't, the item is invalid or has an empty MIME type.

See also:
  setWantedMimeTypes()

See also:
  Item.mimeType()

removeWantedMimeType | ( | self, |
|  | QString | mimeType
| ) |  |  |

Removes a MIME type from the list of wanted MIME types this instance checks against.

Parameters:

  | mimeType | The MIME type to remove from the checklist.

See also:
  addWantedMimeType()

setWantedMimeTypes | ( | self, |
|  | QStringList | mimeTypes
| ) |  |  |

Sets the list of wanted MIME types this instance checks against.

Parameters:

  | mimeTypes | The list of MIME types to check against.

See also:
  wantedMimeTypes()

QStringList wantedMimeTypes | ( |  | self ) |

Returns the list of wanted MIME types this instance checks against.

See also:
  setWantedMimeTypes()

## Static Method Documentation

bool isWantedCollection | ( | Akonadi.Collection | collection,
|  | QString | wantedMimeType
| ) |  |  |

Checks whether a given collection has the given MIME type

Parameters:

  | item | The collection to check the content MIME types of.
  | wantedMimeType | The MIME type to check against.

Returns:
  true if one of the collection content MIME types is the given wanted one, false if it isn't, the collection is invalid or has an empty content MIME type list.

See also:
  setWantedMimeTypes()

See also:
  Collection.contentMimeTypes()

bool isWantedItem | ( | Akonadi.Item | item,
|  | QString | wantedMimeType
| ) |  |  |

Checks whether a given item has the given wanted MIME type

Parameters:

  | item | The item to check the MIME type of.
  | wantedMimeType | The MIME type to check against.

Returns:
  true if the item MIME type is the given one,

false if it isn't, the item is invalid or has an empty MIME type.

See also:
  setWantedMimeTypes()

See also:
  Item.mimeType()