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KDescendantsProxyModel Class Reference

#include <kdescendantsproxymodel.h>

Inheritance diagram for KDescendantsProxyModel:
Inheritance graph
[legend]

Public Member Functions

 KDescendantsProxyModel (QObject *parent=0)
 
virtual ~KDescendantsProxyModel ()
 
QString ancestorSeparator () const
 
virtual int columnCount (const QModelIndex &index=QModelIndex()) const
 
QVariant data (const QModelIndex &index, int role=Qt::DisplayRole) const
 
int descendantCount (const QModelIndex &index) const
 
bool displayAncestorData () const
 
virtual Qt::ItemFlags flags (const QModelIndex &index) const
 
virtual bool hasChildren (const QModelIndex &parent=QModelIndex()) const
 
virtual QVariant headerData (int section, Qt::Orientation orientation, int role) const
 
virtual QModelIndex index (int, int, const QModelIndex &parent=QModelIndex()) const
 
QModelIndex mapFromSource (const QModelIndex &sourceIndex) const
 
QModelIndex mapToSource (const QModelIndex &proxyIndex) const
 
virtual QModelIndexList match (const QModelIndex &start, int role, const QVariant &value, int hits=1, Qt::MatchFlags flags=Qt::MatchFlags(Qt::MatchStartsWith|Qt::MatchWrap)) const
 
virtual QMimeData * mimeData (const QModelIndexList &indexes) const
 
virtual QStringList mimeTypes () const
 
virtual QModelIndex parent (const QModelIndex &) const
 
virtual int rowCount (const QModelIndex &parent=QModelIndex()) const
 
void setAncestorSeparator (const QString &separator)
 
void setDisplayAncestorData (bool display)
 
void setRootIndex (const QModelIndex &index)
 
virtual void setSourceModel (QAbstractItemModel *model)
 
virtual Qt::DropActions supportedDropActions () const
 

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:

entitytreemodel.png
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);
descendantentitiesproxymodel.png
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);
descendantentitiesproxymodel-withansecnames.png
A KDescendantsProxyModel with ancestor names.
Since
4.6
Author
Stephen Kelly steve.nosp@m.ire@.nosp@m.gmail.nosp@m..com

Definition at line 70 of file kdescendantsproxymodel.h.

Constructor & Destructor Documentation

KDescendantsProxyModel::KDescendantsProxyModel ( QObject *  parent = 0)
explicit

Creates a new descendant entities proxy model.

Parameters
parentThe parent object.

Definition at line 213 of file kdescendantsproxymodel.cpp.

KDescendantsProxyModel::~KDescendantsProxyModel ( )
virtual

Destroys the descendant entities proxy model.

Definition at line 218 of file kdescendantsproxymodel.cpp.

Member Function Documentation

QString KDescendantsProxyModel::ancestorSeparator ( ) const

Separator used between data of ancestors.

Definition at line 251 of file kdescendantsproxymodel.cpp.

int KDescendantsProxyModel::columnCount ( const QModelIndex &  index = QModelIndex()) const
virtual

Definition at line 481 of file kdescendantsproxymodel.cpp.

QVariant KDescendantsProxyModel::data ( const QModelIndex &  index,
int  role = Qt::DisplayRole 
) const

Definition at line 489 of file kdescendantsproxymodel.cpp.

int KDescendantsProxyModel::descendantCount ( const QModelIndex &  index) const

Returns the number of descendant entries for the given model index.

bool KDescendantsProxyModel::displayAncestorData ( ) const

Whether ancestor data will be displayed.

Definition at line 239 of file kdescendantsproxymodel.cpp.

Qt::ItemFlags KDescendantsProxyModel::flags ( const QModelIndex &  index) const
virtual

Definition at line 529 of file kdescendantsproxymodel.cpp.

bool KDescendantsProxyModel::hasChildren ( const QModelIndex &  parent = QModelIndex()) const
virtual

Definition at line 327 of file kdescendantsproxymodel.cpp.

QVariant KDescendantsProxyModel::headerData ( int  section,
Qt::Orientation  orientation,
int  role 
) const
virtual

Definition at line 521 of file kdescendantsproxymodel.cpp.

QModelIndex KDescendantsProxyModel::index ( int  row,
int  column,
const QModelIndex &  parent = QModelIndex() 
) const
virtual

Definition at line 347 of file kdescendantsproxymodel.cpp.

QModelIndex KDescendantsProxyModel::mapFromSource ( const QModelIndex &  sourceIndex) const

Definition at line 419 of file kdescendantsproxymodel.cpp.

QModelIndex KDescendantsProxyModel::mapToSource ( const QModelIndex &  proxyIndex) const

Definition at line 358 of file kdescendantsproxymodel.cpp.

QModelIndexList KDescendantsProxyModel::match ( const QModelIndex &  start,
int  role,
const QVariant &  value,
int  hits = 1,
Qt::MatchFlags  flags = Qt::MatchFlags( Qt::MatchStartsWith | Qt::MatchWrap ) 
) const
virtual

Reimplemented to match all descendants.

Definition at line 228 of file kdescendantsproxymodel.cpp.

QMimeData * KDescendantsProxyModel::mimeData ( const QModelIndexList &  indexes) const
virtual

Definition at line 981 of file kdescendantsproxymodel.cpp.

QStringList KDescendantsProxyModel::mimeTypes ( ) const
virtual

Definition at line 992 of file kdescendantsproxymodel.cpp.

QModelIndex KDescendantsProxyModel::parent ( const QModelIndex &  index) const
virtual

Definition at line 321 of file kdescendantsproxymodel.cpp.

int KDescendantsProxyModel::rowCount ( const QModelIndex &  parent = QModelIndex()) const
virtual

Definition at line 333 of file kdescendantsproxymodel.cpp.

void KDescendantsProxyModel::setAncestorSeparator ( const QString &  separator)

Sets the ancestor separator used between data of ancestors.

Definition at line 245 of file kdescendantsproxymodel.cpp.

void KDescendantsProxyModel::setDisplayAncestorData ( 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.

Definition at line 233 of file kdescendantsproxymodel.cpp.

void KDescendantsProxyModel::setRootIndex ( const QModelIndex &  index)
Deprecated:

This method does nothing.

Definition at line 223 of file kdescendantsproxymodel.cpp.

void KDescendantsProxyModel::setSourceModel ( QAbstractItemModel *  model)
virtual

Sets the source model of the proxy.

Definition at line 258 of file kdescendantsproxymodel.cpp.

Qt::DropActions KDescendantsProxyModel::supportedDropActions ( ) const
virtual

Definition at line 1000 of file kdescendantsproxymodel.cpp.


The documentation for this class was generated from the following files:
  • kdescendantsproxymodel.h
  • kdescendantsproxymodel.cpp
This file is part of the KDE documentation.
Documentation copyright © 1996-2014 The KDE developers.
Generated on Tue Oct 14 2014 22:49:17 by doxygen 1.8.7 written by Dimitri van Heesch, © 1997-2006

KDE's Doxygen guidelines are available online.

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