libglibmm-2.4-dev 2.42.0-1 / usr / include / giomm-2.4 / giomm / settings.h

// -*- c++ -*-
// Generated by gmmproc 2.42.0 -- DO NOT MODIFY!
#ifndef _GIOMM_SETTINGS_H
#define _GIOMM_SETTINGS_H

#include <giommconfig.h>


#include <glibmm/ustring.h>
#include <sigc++/sigc++.h>

/* Copyright (C) 2010 Jonathon Jongsma
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#include <glibmm/arrayhandle.h>
#include <glibmm/object.h>
#include <glibmm/variant.h>
#include <giomm/action.h>


#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GSettings GSettings;
typedef struct _GSettingsClass GSettingsClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


namespace Gio
{ class Settings_Class; } // namespace Gio
namespace Gio
{

  /** @addtogroup giommEnums giomm Enums and Flags */

/** 
 *  @var SettingsBindFlags SETTINGS_BIND_DEFAULT
 *  Equivalent to `G_SETTINGS_BIND_GET|G_SETTINGS_BIND_SET`.
 * 
 *  @var SettingsBindFlags SETTINGS_BIND_GET
 *  Update the Object property when the setting changes. It is an error to use this flag if the property is not writable.
 * 
 *  @var SettingsBindFlags SETTINGS_BIND_SET
 *  Update the setting when the Object property changes. It is an error to use this flag if the property is not readable.
 * 
 *  @var SettingsBindFlags SETTINGS_BIND_NO_SENSITIVITY
 *  Do not try to bind a "sensitivity" property to the writability of the setting.
 * 
 *  @var SettingsBindFlags SETTINGS_BIND_GET_NO_CHANGES
 *  When set in addition to SETTINGS_BIND_GET, set the Object property value initially from the setting, but do not listen for changes of the setting.
 * 
 *  @var SettingsBindFlags SETTINGS_BIND_INVERT_BOOLEAN
 *  When passed to g_settings_bind(), uses a pair of mapping functions that invert the boolean value when mapping between the setting and the property.  The setting and property must both be booleans.  You cannot pass this flag to g_settings_bind_with_mapping().
 * 
 *  @enum SettingsBindFlags
 * 
 * Flags used when creating a binding. These flags determine in which
 * direction the binding works. The default is to synchronize in both
 * directions.
 * @ingroup giommEnums
 * @par Bitwise operators:
 * <tt>%SettingsBindFlags operator|(SettingsBindFlags, SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags operator&(SettingsBindFlags, SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags operator^(SettingsBindFlags, SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags operator~(SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags& operator|=(SettingsBindFlags&, SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags& operator&=(SettingsBindFlags&, SettingsBindFlags)</tt><br>
 * <tt>%SettingsBindFlags& operator^=(SettingsBindFlags&, SettingsBindFlags)</tt><br>
 */
enum SettingsBindFlags
{
  SETTINGS_BIND_DEFAULT = 0x0,
  SETTINGS_BIND_GET = (1<<0),
  SETTINGS_BIND_SET = (1<<1),
  SETTINGS_BIND_NO_SENSITIVITY = (1<<2),
  SETTINGS_BIND_GET_NO_CHANGES = (1<<3),
  SETTINGS_BIND_INVERT_BOOLEAN = (1<<4)
};

/** @ingroup giommEnums */
inline SettingsBindFlags operator|(SettingsBindFlags lhs, SettingsBindFlags rhs)
  { return static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs)); }

/** @ingroup giommEnums */
inline SettingsBindFlags operator&(SettingsBindFlags lhs, SettingsBindFlags rhs)
  { return static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs)); }

/** @ingroup giommEnums */
inline SettingsBindFlags operator^(SettingsBindFlags lhs, SettingsBindFlags rhs)
  { return static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs)); }

/** @ingroup giommEnums */
inline SettingsBindFlags operator~(SettingsBindFlags flags)
  { return static_cast<SettingsBindFlags>(~static_cast<unsigned>(flags)); }

/** @ingroup giommEnums */
inline SettingsBindFlags& operator|=(SettingsBindFlags& lhs, SettingsBindFlags rhs)
  { return (lhs = static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs))); }

/** @ingroup giommEnums */
inline SettingsBindFlags& operator&=(SettingsBindFlags& lhs, SettingsBindFlags rhs)
  { return (lhs = static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs))); }

/** @ingroup giommEnums */
inline SettingsBindFlags& operator^=(SettingsBindFlags& lhs, SettingsBindFlags rhs)
  { return (lhs = static_cast<SettingsBindFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs))); }

} // namespace Gio


#ifndef DOXYGEN_SHOULD_SKIP_THIS
namespace Glib
{

template <>
class Value<Gio::SettingsBindFlags> : public Glib::Value_Flags<Gio::SettingsBindFlags>
{
public:
  static GType value_type() G_GNUC_CONST;
};

} // namespace Glib
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


namespace Gio
{


/** A high-level API for application settings
 *
 * The Settings class provides a convenient API for storing and retrieving
 * application settings.
 *
 * @newin{2,28}
 */

class Settings : public Glib::Object
{
  
#ifndef DOXYGEN_SHOULD_SKIP_THIS

public:
  typedef Settings CppObjectType;
  typedef Settings_Class CppClassType;
  typedef GSettings BaseObjectType;
  typedef GSettingsClass BaseClassType;

private:  friend class Settings_Class;
  static CppClassType settings_class_;

private:
  // noncopyable
  Settings(const Settings&);
  Settings& operator=(const Settings&);

protected:
  explicit Settings(const Glib::ConstructParams& construct_params);
  explicit Settings(GSettings* castitem);

#endif /* DOXYGEN_SHOULD_SKIP_THIS */

public:
  virtual ~Settings();

  /** Get the GType for this class, for use with the underlying GObject type system.
   */
  static GType get_type()      G_GNUC_CONST;

#ifndef DOXYGEN_SHOULD_SKIP_THIS


  static GType get_base_type() G_GNUC_CONST;
#endif

  ///Provides access to the underlying C GObject.
  GSettings*       gobj()       { return reinterpret_cast<GSettings*>(gobject_); }

  ///Provides access to the underlying C GObject.
  const GSettings* gobj() const { return reinterpret_cast<GSettings*>(gobject_); }

  ///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
  GSettings* gobj_copy();

private:


protected:
    explicit Settings(const Glib::ustring& schema);

    explicit Settings(const Glib::ustring& schema, const Glib::ustring& path);

  //TODO: Requires SettingsBackend: _WRAP_CTOR(Settings(const Glib::ustring& schema, const Glib::RefPtr<SettingsBackend>& backend), g_settings_new_with_backend)
  //TODO: Requires SettingsBackend: _WRAP_CTOR(Settings(const Glib::ustring& schema, const Glib::RefPtr<SettingsBackend>& backend, const Glib::ustring& path), g_settings_new_with_backend_and_path)

public:
  
  static Glib::RefPtr<Settings> create(const Glib::ustring& schema);

  
  static Glib::RefPtr<Settings> create(const Glib::ustring& schema, const Glib::ustring& path);

  //TODO: Requires SettingsBackend: _WRAP_CREATE(const Glib::ustring& schema, const Glib::RefPtr<SettingsBackend>& backend)
  //TODO: Requires SettingsBackend: _WRAP_CREATE(const Glib::ustring& schema, const Glib::RefPtr<SettingsBackend>& backend, const Glib::ustring& path)

  //TODO: Rename these to get/set_*_value_variant() and add templated get/set_*_value() methods as elsewhere?
  
  /** Sets @a key in @a settings to @a value.
   * 
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for @a settings or for @a value to have the incorrect type, per
   * the schema.
   * 
   * If @a value is floating then this function consumes the reference.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value A Variant of the correct type.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  bool set_value(const Glib::ustring& key, const Glib::VariantBase& value);


  /** Gets the value that is stored in the settings for a @a key.
   *
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for the settings.
   *
   * @param key The key to get the value for.
   * @param value A Variant of the expected type.
   *
   * @newin{2,28}
   */
  void get_value(const Glib::ustring& key, Glib::VariantBase& value) const;
  

  //TODO: We've added a bool return to handle the NULL return value case,
  //but maybe other get_value() methods can return NULLs too.

  /** Checks the "user value" of a @a key, if there is one.
   *
   * The user value of a key is the last value that was set by the user.
   *
   * After calling reset() this function should always return
   * false (assuming something is not wrong with the system
   * configuration).
   *
   * It is possible that get_value() will return a different
   * value than this method.  This can happen in the case that the user
   * set a value for a key that was subsequently locked down by the system
   * administrator -- this method will return the user's old value.
   *
   * This method may be useful for adding a "reset" option to a UI or
   * for providing indication that a particular value has been changed.
   *
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for the settings.
   *
   * @param key The key to get the user value for.
   * @param value A Variant of the expected type.
   * @result true if a user value was found.
   *
   * @newin{2,40}
   */
  bool get_user_value(const Glib::ustring& key, Glib::VariantBase& value) const;
  

  /** Gets the "default value" of a key.
   *
   * This is the value that would be read if reset() were to be
   * called on the key.
   *
   * Note that this may be a different value than returned by
   * get_default_value() if the system administrator
   * has provided a default value.
   *
   * Comparing the return values of get_default_value() and
   * value() is not sufficient for determining if a value
   * has been set because the user may have explicitly set the value to
   * something that happens to be equal to the default.  The difference
   * here is that if the default changes in the future, the user's key
   * will still be set.
   *
   * This method may be useful for adding an indication to a UI of what
   * the default value was before the user set it.
   *
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for the settings.
   *
   * @param key The key to get the default value for.
   * @param value A Variant of the expected type.
   *
   * @newin{2,40}
   */
  void get_default_value(const Glib::ustring& key, Glib::VariantBase& value) const;
  

  /** Gets the value that is stored at @a key in @a settings.
   * 
   * A convenience variant of g_settings_get() for 32-bit integers.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a int32 type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return An integer.
   */
  int get_int(const Glib::ustring& key) const;
  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for 32-bit integers.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a int32 type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  void set_int(const Glib::ustring& key, int value);
  
  /** Gets the value that is stored at @a key in @a settings.
   * 
   * A convenience variant of g_settings_get() for 32-bit unsigned
   * integers.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a uint32 type in the schema for @a settings.
   * 
   * @newin{2,30}
   * 
   * @param key The key to get the value for.
   * @return An unsigned integer.
   */
  guint get_uint(const Glib::ustring& key) const;
  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for 32-bit unsigned
   * integers.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a uint32 type in the schema for @a settings.
   * 
   * @newin{2,30}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  void set_uiint(const Glib::ustring& key, guint value);
  
  /** Gets the value that is stored at @a key in @a settings.
   * 
   * A convenience variant of g_settings_get() for booleans.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a boolean type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return A boolean.
   */
  bool get_boolean(const Glib::ustring& key) const;
  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for booleans.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a boolean type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  void set_boolean(const Glib::ustring& key, bool value);
  
  /** Gets the value that is stored at @a key in @a settings.
   * 
   * A convenience variant of g_settings_get() for strings.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a string type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return A newly-allocated string.
   */
  Glib::ustring get_string(const Glib::ustring& key) const;
  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for strings.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a string type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  void set_string(const Glib::ustring& key, const Glib::ustring& value);
  
  /** Gets the value that is stored at @a key in @a settings.
   * 
   * A convenience variant of g_settings_get() for doubles.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a 'double' type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return A double.
   */
  double get_double(const Glib::ustring& key) const;
  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for doubles.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having a 'double' type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  void set_double(const Glib::ustring& key, double value);

   
  /** A convenience variant of g_settings_get() for string arrays.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having an array of strings type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return A
   * newly-allocated, <tt>0</tt>-terminated array of strings, the value that
   * is stored at @a key in @a settings.
   */
  Glib::StringArrayHandle get_string_array(const Glib::ustring& key) const;

  
  /** Sets @a key in @a settings to @a value.
   * 
   * A convenience variant of g_settings_set() for string arrays.  If
   *  @a value is <tt>0</tt>, then @a key is set to be the empty array.
   * 
   * It is a programmer error to give a @a key that isn't specified as
   * having an array of strings type in the schema for @a settings.
   * 
   * @newin{2,26}
   * 
   * @param key The name of the key to set.
   * @param value The value to set it to, or <tt>0</tt>.
   * @return <tt>true</tt> if setting the key succeeded,
   * <tt>false</tt> if the key was not writable.
   */
  bool set_string_array(const Glib::ustring& key, const Glib::StringArrayHandle& value);

  
  /** Gets the value that is stored in @a settings for @a key and converts it
   * to the enum value that it represents.
   * 
   * In order to use this function the type of the value must be a string
   * and it must be marked in the schema file as an enumerated type.
   * 
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for @a settings or is not marked as an enumerated type.
   * 
   * If the value stored in the configuration database is not a valid
   * value for the enumerated type then this function will return the
   * default value.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return The enum value.
   */
  int get_enum(const Glib::ustring& key) const;
  
  /** Looks up the enumerated type nick for @a value and writes it to @a key,
   * within @a settings.
   * 
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for @a settings or is not marked as an enumerated type, or for
   *  @a value not to be a valid value for the named type.
   * 
   * After performing the write, accessing @a key directly with
   * g_settings_get_string() will return the 'nick' associated with
   *  @a value.
   * 
   * @param key A key, within @a settings.
   * @param value An enumerated value.
   * @return <tt>true</tt>, if the set succeeds.
   */
  bool get_enum(const Glib::ustring& key, int value);
  
  /** Gets the value that is stored in @a settings for @a key and converts it
   * to the flags value that it represents.
   * 
   * In order to use this function the type of the value must be an array
   * of strings and it must be marked in the schema file as an flags type.
   * 
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for @a settings or is not marked as a flags type.
   * 
   * If the value stored in the configuration database is not a valid
   * value for the flags type then this function will return the default
   * value.
   * 
   * @newin{2,26}
   * 
   * @param key The key to get the value for.
   * @return The flags value.
   */
  guint get_flags(const Glib::ustring& key) const;
  
  /** Looks up the flags type nicks for the bits specified by @a value, puts
   * them in an array of strings and writes the array to @a key, within
   *  @a settings.
   * 
   * It is a programmer error to give a @a key that isn't contained in the
   * schema for @a settings or is not marked as a flags type, or for @a value
   * to contain any bits that are not value for the named type.
   * 
   * After performing the write, accessing @a key directly with
   * g_settings_get_strv() will return an array of 'nicks'; one for each
   * bit in @a value.
   * 
   * @param key A key, within @a settings.
   * @param value A flags value.
   * @return <tt>true</tt>, if the set succeeds.
   */
  bool get_flags(const Glib::ustring& key, guint value);

  // Ignore varargs functions.
  

  /** Creates a child settings object which has a base path of
   * `base-path/ @a name`, where `base-path` is the base path of
   *  @a settings.
   * 
   * The schema for the child settings object must have been declared
   * in the schema of @a settings using a <child> element.
   * 
   * @newin{2,26}
   * 
   * @param name The name of the child schema.
   * @return A 'child' settings object.
   */
  Glib::RefPtr<Settings> get_child(const Glib::ustring& name);
  
  /** Creates a child settings object which has a base path of
   * `base-path/ @a name`, where `base-path` is the base path of
   *  @a settings.
   * 
   * The schema for the child settings object must have been declared
   * in the schema of @a settings using a <child> element.
   * 
   * @newin{2,26}
   * 
   * @param name The name of the child schema.
   * @return A 'child' settings object.
   */
  Glib::RefPtr<const Settings> get_child(const Glib::ustring& name) const;
  
  /** Finds out if a key can be written or not
   * 
   * @newin{2,26}
   * 
   * @param name The name of a key.
   * @return <tt>true</tt> if the key @a name is writable.
   */
  bool is_writable(const Glib::ustring& name) const;

  
  /** Changes the Settings object into 'delay-apply' mode. In this
   * mode, changes to @a settings are not immediately propagated to the
   * backend, but kept locally until g_settings_apply() is called.
   * 
   * @newin{2,26}
   * 
   */
  void delay();
  
  /** Applies any changes that have been made to the settings.  This
   * function does nothing unless @a settings is in 'delay-apply' mode;
   * see g_settings_delay().  In the normal case settings are always
   * applied immediately.
   * 
   */
  void apply();
  
  /** Reverts all non-applied changes to the settings.  This function
   * does nothing unless @a settings is in 'delay-apply' mode; see
   * g_settings_delay().  In the normal case settings are always applied
   * immediately.
   * 
   * Change notifications will be emitted for affected keys.
   * 
   */
  void revert();
  
  /** Returns whether the Settings object has any unapplied
   * changes.  This can only be the case if it is in 'delayed-apply' mode.
   * 
   * @newin{2,26}
   * 
   * @return <tt>true</tt> if @a settings has unapplied changes.
   */
  bool get_has_unapplied() const;

  
  /** Resets @a key to its default value.
   * 
   * This call resets the key, as much as possible, to its default value.
   * That might the value specified in the schema or the one set by the
   * administrator.
   * 
   * @param key The name of a key.
   */
  void reset(const Glib::ustring& key);

#ifndef GIOMM_DISABLE_DEPRECATED

//We must hand-code this because gmmproc is confused by the static keyword with the vector.
//#m4 __CONVERSION(`const gchar*const*',`std::vector<Glib::ustring>',`Glib::ArrayHandler<Glib::ustring>::array_to_vector($3, Glib::OWNERSHIP_NONE)')
  
  /** @newin{2,26}
   * 
   * Deprecated:2.40: Use g_settings_schema_source_list_schemas() instead.
   * If you used g_settings_list_schemas() to check for the presence of
   * a particular schema, use g_settings_schema_source_lookup() instead
   * of your whole loop.
   * 
   * @return A list of Settings
   * schemas that are available.  The list must not be modified or
   * freed.
   */

  static std::vector<Glib::ustring> list_schemas();
  
#endif // GIOMM_DISABLE_DEPRECATED


  /** Gets the list of children on @a settings.
   * 
   * The list is exactly the list of strings for which it is not an error
   * to call g_settings_get_child().
   * 
   * For GSettings objects that are lists, this value can change at any
   * time and you should connect to the "children-changed" signal to watch
   * for those changes.  Note that there is a race condition here: you may
   * request a child after listing it only for it to have been destroyed
   * in the meantime.  For this reason, g_settings_get_child() may return
   * <tt>0</tt> even for a child that was listed by this function.
   * 
   * For GSettings objects that are not lists, you should probably not be
   * calling this function from "normal" code (since you should already
   * know what children are in your schema).  This function may still be
   * useful there for introspection reasons, however.
   * 
   * You should free the return value with Glib::strfreev() when you are done
   * with it.
   * 
   * @return A list of the children on @a settings.
   */
  std::vector<Glib::ustring> list_children() const;
  
  /** Introspects the list of keys on @a settings.
   * 
   * You should probably not be calling this function from "normal" code
   * (since you should already know what keys are in your schema).  This
   * function is intended for introspection reasons.
   * 
   * You should free the return value with Glib::strfreev() when you are done
   * with it.
   * 
   * @return A list of the keys on @a settings.
   */
  std::vector<Glib::ustring> list_keys() const;

   // deprecated

  
#ifndef GIOMM_DISABLE_DEPRECATED

  /** Checks if the given @a value is of the correct type and within the
   * permitted range for @a key.
   * 
   * @newin{2,28}
   * 
   * Deprecated:2.40:Use g_settings_schema_key_range_check() instead.
   * 
   * @deprecated Use g_settings_schema_key_range_check() instead.
   * 
   * @param key The key to check.
   * @param value The value to check.
   * @return <tt>true</tt> if @a value is valid for @a key.
   */
  bool range_check(const Glib::ustring& key, const Glib::VariantBase& value) const;
#endif // GIOMM_DISABLE_DEPRECATED


  //TODO: Wrap GSettingsSchema

 
  /** Create a binding between the @a key in the @a settings object
   * and the property @a property of @a object.
   * 
   * The binding uses the default GIO mapping functions to map
   * between the settings and property values. These functions
   * handle booleans, numeric types and string types in a
   * straightforward way. Use g_settings_bind_with_mapping() if
   * you need a custom mapping, or map between types that are not
   * supported by the default mapping functions.
   * 
   * Unless the @a flags include SETTINGS_BIND_NO_SENSITIVITY, this
   * function also establishes a binding between the writability of
   *  @a key and the "sensitive" property of @a object (if @a object has
   * a boolean property by that name). See g_settings_bind_writable()
   * for more details about writable bindings.
   * 
   * Note that the lifecycle of the binding is tied to the object,
   * and that you can have only one binding per object property.
   * If you bind the same property twice on the same object, the second
   * binding overrides the first one.
   * 
   * @newin{2,26}
   * 
   * @param key The key to bind.
   * @param object A Object.
   * @param property The name of the property to bind.
   * @param flags Flags for the binding.
   */
  void bind(const Glib::ustring& key, Glib::ObjectBase* object, const Glib::ustring& property, SettingsBindFlags flags = SETTINGS_BIND_DEFAULT);
  void bind(const Glib::ustring& key, const Glib::PropertyProxy_Base& property_proxy, SettingsBindFlags flags=SETTINGS_BIND_DEFAULT);
  // TODO: implement bind_with_mapping
  
  /** Create a binding between the writability of @a key in the
   *  @a settings object and the property @a property of @a object.
   * The property must be boolean; "sensitive" or "visible"
   * properties of widgets are the most likely candidates.
   * 
   * Writable bindings are always uni-directional; changes of the
   * writability of the setting will be propagated to the object
   * property, not the other way.
   * 
   * When the @a inverted argument is <tt>true</tt>, the binding inverts the
   * value as it passes from the setting to the object, i.e. @a property
   * will be set to <tt>true</tt> if the key is not writable.
   * 
   * Note that the lifecycle of the binding is tied to the object,
   * and that you can have only one binding per object property.
   * If you bind the same property twice on the same object, the second
   * binding overrides the first one.
   * 
   * @newin{2,26}
   * 
   * @param key The key to bind.
   * @param object A Object.
   * @param property The name of a boolean property to bind.
   * @param inverted Whether to 'invert' the value.
   */
  void bind_writable(const Glib::ustring& key, Glib::ObjectBase* object, const Glib::ustring& property, bool inverted = false);
  void bind_writable(const Glib::ustring& key, const Glib::PropertyProxy_Base& property_proxy, bool inverted=false);
  // TODO: unbind is not actually a class method

  
  /** Creates a Action corresponding to a given Settings key.
   * 
   * The action has the same name as the key.
   * 
   * The value of the key becomes the state of the action and the action
   * is enabled when the key is writable.  Changing the state of the
   * action results in the key being written to.  Changes to the value or
   * writability of the key cause appropriate change notifications to be
   * emitted for the action.
   * 
   * For boolean-valued keys, action activations take no parameter and
   * result in the toggling of the value.  For all other types,
   * activations take the new value for the key (which must have the
   * correct type).
   * 
   * @newin{2,32}
   * 
   * @param key The name of a key in @a settings.
   * @return A new Action.
   */
  Glib::RefPtr<Action> create_action(const Glib::ustring& key);

  //TODO?: _WRAP_PROPERTY("backend", Glib::RefPtr<SettingsBackend>)

  #ifdef GLIBMM_PROPERTIES_ENABLED
/** Whether this settings object is in 'delay-apply' mode.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< bool > property_delay_apply() const;
#endif //#GLIBMM_PROPERTIES_ENABLED


  #ifdef GLIBMM_PROPERTIES_ENABLED
/** TRUE if there are outstanding changes to apply().
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< bool > property_has_unapplied() const;
#endif //#GLIBMM_PROPERTIES_ENABLED


  #ifdef GLIBMM_PROPERTIES_ENABLED
/** The path within the backend where the settings are.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< std::string > property_path() const;
#endif //#GLIBMM_PROPERTIES_ENABLED


#ifndef GIOMM_DISABLE_DEPRECATED

#ifdef GLIBMM_PROPERTIES_ENABLED
/** The name of the schema for this settings object.
   * @deprecated Use the 'schema-id' property instead. In a future version, this property may instead refer to a SettingsSchema.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< Glib::ustring > property_schema() const;
#endif //#GLIBMM_PROPERTIES_ENABLED


#endif // GIOMM_DISABLE_DEPRECATED

  #ifdef GLIBMM_PROPERTIES_ENABLED
/** The name of the schema for this settings object.
   *
   * You rarely need to use properties because there are get_ and set_ methods for almost all of them.
   * @return A PropertyProxy_ReadOnly that allows you to get the value of the property,
   * or receive notification when the value of the property changes.
   */
  Glib::PropertyProxy_ReadOnly< Glib::ustring > property_schema_id() const;
#endif //#GLIBMM_PROPERTIES_ENABLED


  //TODO: _WRAP_PROPERTY("settings-schema", Glib::RefPtr<SettingsSchema>)

  //TODO?: _WRAP_SIGNAL(bool change_event(const Glib::ArrayHandle<Glib::QueryQuark>& keys, int n_keys), "change-event")

 
  /**
   * @par Slot Prototype:
   * <tt>void on_my_%changed(const Glib::ustring& key)</tt>
   *
   * The "changed" signal is emitted when a key has potentially changed.
   * You should call one of the g_settings_get() calls to check the new
   * value.
   * 
   * This signal supports detailed connections.  You can connect to the
   * detailed signal "changed::x" in order to only receive callbacks
   * when key "x" changes.
   * 
   * @param key The name of the key that changed.
   */

  Glib::SignalProxy1< void,const Glib::ustring& > signal_changed();


  /**
   * @par Slot Prototype:
   * <tt>bool on_my_%writable_change_event(guint key)</tt>
   *
   * The "writable-change-event" signal is emitted once per writability
   * change event that affects this settings object.  You should connect
   * to this signal if you are interested in viewing groups of changes
   * before they are split out into multiple emissions of the
   * "writable-changed" signal.  For most use cases it is more
   * appropriate to use the "writable-changed" signal.
   * 
   * In the event that the writability change applies only to a single
   * key, @a key will be set to the Quark for that key.  In the event
   * that the writability change affects the entire settings object,
   *  @a key will be 0.
   * 
   * The default handler for this signal invokes the "writable-changed"
   * and "changed" signals for each affected key.  This is done because
   * changes in writability might also imply changes in value (if for
   * example, a new mandatory setting is introduced).  If any other
   * connected handler returns <tt>true</tt> then this default functionality
   * will be suppressed.
   * 
   * @param key The quark of the key, or 0.
   * @return <tt>true</tt> to stop other handlers from being invoked for the
   * event. <tt>false</tt> to propagate the event further.
   */

  Glib::SignalProxy1< bool,guint > signal_writable_change_event();

  
  /**
   * @par Slot Prototype:
   * <tt>void on_my_%writable_changed(const Glib::ustring& key)</tt>
   *
   * The "writable-changed" signal is emitted when the writability of a
   * key has potentially changed.  You should call
   * g_settings_is_writable() in order to determine the new status.
   * 
   * This signal supports detailed connections.  You can connect to the
   * detailed signal "writable-changed::x" in order to only receive
   * callbacks when the writability of "x" changes.
   * 
   * @param key The key.
   */

  Glib::SignalProxy1< void,const Glib::ustring& > signal_writable_changed();


public:

public:
  //C++ methods used to invoke GTK+ virtual functions:

protected:
  //GTK+ Virtual Functions (override these to change behaviour):

  //Default Signal Handlers::
  /// This is a default handler for the signal signal_changed().
  virtual void on_changed(const Glib::ustring& key);
  /// This is a default handler for the signal signal_writable_change_event().
  virtual bool on_writable_change_event(guint key);
  /// This is a default handler for the signal signal_writable_changed().
  virtual void on_writable_changed(const Glib::ustring& key);


};

} // namespace Gio


namespace Glib
{
  /** A Glib::wrap() method for this object.
   * 
   * @param object The C instance.
   * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
   * @result A C++ instance that wraps this C instance.
   *
   * @relates Gio::Settings
   */
  Glib::RefPtr<Gio::Settings> wrap(GSettings* object, bool take_copy = false);
}


#endif /* _GIOMM_SETTINGS_H */