# class KConfigDialogManager

###

Module | kdeui
Namespace |
Class | KConfigDialogManager
Inherits | QObject

Provides a means of automatically retrieving, saving and resetting KConfigSkeleton based settings in a dialog.

The KConfigDialogManager class provides a means of automatically retrieving, saving and resetting basic settings. It also can emit signals when settings have been changed (settings were saved) or modified (the user changes a checkbox from on to off).

The names of the widgets to be managed have to correspond to the names of the configuration entries in the KConfigSkeleton object plus an additional "kcfg_" prefix. For example a widget named "kcfg_MyOption" would be associated to the configuration entry "MyOption".

New widgets can be added to the map using the static functions propertyMap() and changedMap(). Note that you can't just add any class. The class must have a matching Q_PROPERTY(...) macro defined, and a signal which emitted when the property changed. Note: by default, the property which defined as "USER true" is used.

For example (note that KColorButton is already added and it doesn't need to manually added):

kcolorbutton.h defines the following property:

    Q_PROPERTY( QColor color READ color WRITE setColor USER true )

and signal:

    void changed( const QColor &newColor );

To add KColorButton the following code would be inserted in the main:

    KConfigDialogManager.changedMap()->insert("KColorButton", SIGNAL(changed(const QColor &)));

Author Benjamin C Meyer <ben+kdelibs at meyerhome dot net> Author Waldo Bastian <bastian@kde.org>

### methods

- KConfigDialogManager (parent, conf)

  returns ctor

  Argument | Type | Default
  --- | --- | ---
  parent | QWidget |
  conf | KConfigSkeleton |

  Constructor.

  parent - Dialog widget to manage

  conf - Object that contains settings

- KConfigDialogManager (a0)

  returns ctor
  Not implemented

  Argument | Type | Default
  --- | --- | ---
  a0 | KConfigDialogManager |

- addWidget (widget)

  returns Nothing

  Argument | Type | Default
  --- | --- | ---
  widget | QWidget |

  Add additional widgets to manage

  widget - Additional widget to manage, inlcuding all its children

- changedMap ( )

  returns QHash<QString,QByteArray>
  static

  Retrieve the widget change map

- getUserProperty (widget)

  returns QByteArray

  Argument | Type | Default
  --- | --- | ---
  widget | QWidget |

  Finds the USER property name using Qt's MetaProperty system, and caches it in the property map (the cache could be retrieved by propertyMap() ).

- hasChanged ( )

  returns bool

  Returns whether the current state of the known widgets are different from the state in the config object.

- init (trackChanges)

  returns Nothing

  Argument | Type | Default
  --- | --- | ---
  trackChanges | bool |

  trackChanges - - If any changes by the widgets should be tracked set true. This causes the emitting the modified() signal when something changes. TODO: Returns bool - True if any setting was changed from the default.

- initMaps ( )

  returns Nothing
  static

  Initializes the property maps

- isDefault ( )

  returns bool

  Returns whether the current state of the known widgets are the same as the default state in the config object.

- parseChildren (widget, trackChanges)

  returns bool

  Argument | Type | Default
  --- | --- | ---
  widget | QWidget |
  trackChanges | bool |

  Recursive function that finds all known children. Goes through the children of widget and if any are known and not being ignored, stores them in currentGroup. Also checks if the widget should be disabled because it is set immutable.

  widget - - Parent of the children to look at.

  trackChanges - - If true then tracks any changes to the children of widget that are known. Returns bool - If a widget was set to something other then its default.

- property (w)

  returns QVariant

  Argument | Type | Default
  --- | --- | ---
  w | QWidget |

  Retrieve a property

- propertyMap ( )

  returns QHash<QString,QByteArray>
  static

  Retrieve the property map

- setProperty (w, v)

  returns Nothing

  Argument | Type | Default
  --- | --- | ---
  w | QWidget |
  v | QVariant |

  Set a property

- settingsChanged ( )

  returns Nothing
  SIGNAL ("settingsChanged ()")

  One or more of the settings have been saved (such as when the user clicks on the Apply button). This is only emitted by updateSettings() whenever one or more setting were changed and consequently saved.

- settingsChanged (widget)

  returns Nothing
  SIGNAL ("settingsChanged (QWidget*)")

  Argument | Type | Default
  --- | --- | ---
  widget | QWidget |

  TODO: Verify One or more of the settings have been changed.

  widget - - The widget group (pass in via addWidget()) that contains the one or more modified setting.

  See also settingsChanged()

- setupWidget (widget, item)

  returns Nothing

  Argument | Type | Default
  --- | --- | ---
  widget | QWidget |
  item | KConfigSkeletonItem |

  Setup secondary widget properties

- updateSettings ( )

  returns Nothing

  Traverse the specified widgets, saving the settings of all known widgets in the settings object.

  Example use: User clicks Ok or Apply button in a configure dialog.

- updateWidgets ( )

  returns Nothing

  Traverse the specified widgets, sets the state of all known widgets according to the state in the settings object.

  Example use: Initialisation of dialog. Example use: User clicks Reset button in a configure dialog.

- updateWidgetsDefault ( )

  returns Nothing

  Traverse the specified widgets, sets the state of all known widgets according to the default state in the settings object.

  Example use: User clicks Defaults button in a configure dialog.

- widgetModified ( )

  returns Nothing
  SIGNAL ("widgetModified ()")

  If retrieveSettings() was told to track changes then if any known setting was changed this signal will be emitted. Note that a settings can be modified several times and might go back to the original saved state. hasChanged() will tell you if anything has actually changed from the saved values.