KDE 4.7 PyKDE API Reference

- KDE's Python API

# KSelectionOwner Class Reference

`from PyKDE4.kdeui import *`

Inherits: QObject

## Detailed Description

This class implements claiming and owning manager selections, as described in the ICCCM, section 2.8. The selection atom is passed to the constructor, claim() attemps to claim ownership of the selection, release() gives up the selection ownership. Signal lostOwnership() is emitted when the selection is claimed by another owner. ICCCM manager selection owner

## Signals

| lostOwnership ()

## Methods

| __init__ (self, long selection, int screen=-1, QObject parent=NULL)
| __init__ (self, QString selection, int screen=-1, QObject parent=NULL)
bool | claim (self, bool force, bool force_kill=1)
bool | genericReply (self, long target, long property, long requestor)
| getAtoms (self)
long | ownerWindow (self)
| release (self)
| replyTargets (self, long property, long requestor)
| setData (self, long extra1, long extra2)

## Signal Documentation

lostOwnership | ( |  | ) |

This signal is emitted if the selection was owned and the ownership has been lost due to another client claiming it, this signal is emitted. IMPORTANT: It's not safe to delete the instance in a slot connected to this signal.

Signal syntax:
  `QObject.connect(source, SIGNAL("lostOwnership()"), target_slot)`

## Method Documentation

__init__ | ( | self, |
|  | long | selection,
|  | int | screen=-1,
|  | QObject | parent=NULL
| ) |  |  |

This constructor accepts the selection name and creates the appropriate atom for it automatically.

Parameters:

  | selection | name of the manager selection
  | screen | X screen, or -1 for default
  | parent | parent object, or NULL if there is none

__init__ | ( | self, |
|  | QString | selection,
|  | int | screen=-1,
|  | QObject | parent=NULL
| ) |  |  |

This constructor accepts the selection name and creates the appropriate atom for it automatically.

Parameters:

  | selection | name of the manager selection
  | screen | X screen, or -1 for default
  | parent | parent object, or NULL if there is none

bool claim | ( | self, |
|  | bool | force,
|  | bool | force_kill=1
| ) |  |  |

This function attemps to claim ownership of the manager selection, using the current X timestamp. If force is false, and the selection is already owned, the selection is not claimed, and false is returned. If claiming is forced and the selection is owned by another client, it is waited for up to 1 second for the previous owner to disown the selection, if force_kill is true, and the previous owner fails to disown the selection in time, it will be forcibly killed. True is returned after successfully claiming ownership of the selection.

bool genericReply | ( | self, |
|  | long | target,
|  | long | property,
|  | long | requestor
| ) |  |  |

Called when a SelectionRequest event is received. A reply should be sent using the selection handling mechanism described in the ICCCM section 2.

Parameters:

  | target | requested target type
  | property | property to use for the reply data
  | requestor | requestor window

getAtoms | ( |  | self ) |

Called to create atoms needed for claiming the selection and communication using the selection handling mechanism. The default implementation must be called if reimplemented. This method may be called repeatedly.

long ownerWindow | ( |  | self ) |

If the selection is owned, returns the window used internally for owning the selection.

release | ( |  | self ) |

If the selection is owned, the ownership is given up.

replyTargets | ( | self, |
|  | long | property,
|  | long | requestor
| ) |  |  |

Called to announce the supported targets, as described in the ICCCM section 2.6. The default implementation announces the required targets MULTIPLE, TIMESTAMP and TARGETS.

setData | ( | self, |
|  | long | extra1,
|  | long | extra2
| ) |  |  |

Sets extra data to be sent in the message sent to root window after successfully claiming a selection. These extra data are in data.l[3] and data.l[4] fields of the XClientMessage.