KDescendantsProxyModel

KDE 4.9 PyKDE API Reference

- KDE's Python API

# KDescendantsProxyModel Class Reference

`from PyKDE4.kdeui import *`

Inherits: QAbstractProxyModel → QAbstractItemModel → QObject

## Detailed Description

Proxy Model for restructuring a Tree into a list.

A KDescendantsProxyModel may be used to alter how the items in the tree are presented.

Given a model which is represented as a tree:

"A plain EntityTreeModel in a view"

The KDescendantsProxyModel restructures the sourceModel to represent it as a flat list.

    // ... Create an entityTreeModel
    KDescendantsProxyModel *descProxy = new KDescendantsProxyModel(this);
    descProxy->setSourceModel(entityTree);
    view->setModel(descProxy);

"A KDescendantsProxyModel."

KDescendantEntitiesProxyModel can also display the ancestors of the index in the source model as part of its display.

    // ... Create an entityTreeModel
    KDescendantsProxyModel *descProxy = new KDescendantsProxyModel(this);
    descProxy->setSourceModel(entityTree);

    // #### This is new
    descProxy->setDisplayAncestorData(true);
    descProxy->setDisplayAncestorSeparator(QString(" / "));

    view->setModel(descProxy);

"A KDescendantsProxyModel with ancestor names."

Since:
  4.6

Author:
  Stephen Kelly <steveire@gmail.com>

## Methods
| __init__ (self, QObject parent=0)
QString | ancestorSeparator (self)
int | columnCount (self, QModelIndex index=QModelIndex())
QVariant | data (self, QModelIndex index, int role=Qt.DisplayRole)
bool | displayAncestorData (self)
Qt::ItemFlags | flags (self, QModelIndex index)
bool | hasChildren (self, QModelIndex parent=QModelIndex())
QVariant | headerData (self, int section, Qt::Orientation orientation, int role)
QModelIndex | index (self, int a0, int a1, QModelIndex parent=QModelIndex())
QModelIndex | mapFromSource (self, QModelIndex sourceIndex)
QModelIndex | mapToSource (self, QModelIndex proxyIndex)
[QModelIndex] | match (self, QModelIndex start, int role, QVariant value, int hits=1, Qt::MatchFlags flags=Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))
QMimeData | mimeData (self, [QModelIndex] indexes)
QStringList | mimeTypes (self)
QModelIndex | parent (self, QModelIndex a0)
int | rowCount (self, QModelIndex parent=QModelIndex())
| setAncestorSeparator (self, QString separator)
| setDisplayAncestorData (self, bool display)
| setRootIndex (self, QModelIndex index)
| setSourceModel (self, QAbstractItemModel model)
Qt::DropActions | supportedDropActions (self)

## Method Documentation

__init__ | ( | self, |
|  | QObject | parent=0
| ) |  |  |

Creates a new descendant entities proxy model.

Parameters:

  | parent | The parent object.

QString ancestorSeparator | ( |  | self ) |

Separator used between data of ancestors.

int columnCount | ( | self, |
|  | QModelIndex | index=QModelIndex()
| ) |  |  |

QVariant data | ( | self, |
|  | QModelIndex | index,
|  | int | role=Qt.DisplayRole
| ) |  |  |

bool displayAncestorData | ( |  | self ) |

Whether ancestor data will be displayed.

Qt::ItemFlags flags | ( | self, |
|  | QModelIndex | index
| ) |  |  |

bool hasChildren | ( | self, |
|  | QModelIndex | parent=QModelIndex()
| ) |  |  |

QVariant headerData | ( | self, |
|  | int | section,
|  | Qt::Orientation | orientation,
|  | int | role
| ) |  |  |

QModelIndex index | ( | self, |
|  | int | a0,
|  | int | a1,
|  | QModelIndex | parent=QModelIndex()
| ) |  |  |

QModelIndex mapFromSource | ( | self, |
|  | QModelIndex | sourceIndex
| ) |  |  |

QModelIndex mapToSource | ( | self, |
|  | QModelIndex | proxyIndex
| ) |  |  |

[QModelIndex] match | ( | self, |
|  | QModelIndex | start,
|  | int | role,
|  | QVariant | value,
|  | int | hits=1,
|  | Qt::MatchFlags | flags=Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap)
| ) |  |  |

Reimplemented to match all descendants.

QMimeData mimeData | ( | self, |
|  | [QModelIndex] | indexes
| ) |  |  |

QStringList mimeTypes | ( |  | self ) |

QModelIndex parent | ( | self, |
|  | QModelIndex | a0
| ) |  |  |

int rowCount | ( | self, |
|  | QModelIndex | parent=QModelIndex()
| ) |  |  |

setAncestorSeparator | ( | self, |
|  | QString | separator
| ) |  |  |

Sets the ancestor separator used between data of ancestors.

setDisplayAncestorData | ( | self, |
|  | bool | display
| ) |  |  |

Set whether to show ancestor data in the model. If display is true, then a source model which is displayed as

      -> "Item 0-0" (this is row-depth)
      -> -> "Item 0-1"
      -> -> "Item 1-1"
      -> -> -> "Item 0-2"
      -> -> -> "Item 1-2"
      -> "Item 1-0"

will be displayed as

      -> *Item 0-0"
      -> "Item 0-0 / Item 0-1"
      -> "Item 0-0 / Item 1-1"
      -> "Item 0-0 / Item 1-1 / Item 0-2"
      -> "Item 0-0 / Item 1-1 / Item 1-2"
      -> "Item 1-0"

If display is false, the proxy will show

      -> *Item 0-0"
      -> "Item 0-1"
      -> "Item 1-1"
      -> "Item 0-2"
      -> "Item 1-2"
      -> "Item 1-0"

Default is false.

setRootIndex | ( | self, |
|  | QModelIndex | index
| ) |  |  |

Deprecated:

This method does nothing.

setSourceModel | ( | self, |
|  | QAbstractItemModel | model
| ) |  |  |

Sets the source model of the proxy.

Qt::DropActions supportedDropActions | ( |  | self ) |