/usr/include/giomm-2.4/giomm/action.h is in libglibmm-2.4-dev 2.42.0-1.
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// Generated by gmmproc 2.42.0 -- DO NOT MODIFY!
#ifndef _GIOMM_ACTION_H
#define _GIOMM_ACTION_H
#include <glibmm/ustring.h>
#include <sigc++/sigc++.h>
// -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*-
/* Copyright (C) 2011 The giomm Development Team
*
* 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/interface.h>
#include <glibmm/varianttype.h>
#include <gio/gio.h>
#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GActionInterface GActionInterface;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GAction GAction;
typedef struct _GActionClass GActionClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
namespace Gio
{ class Action_Class; } // namespace Gio
namespace Glib
{
class VariantBase;
}
namespace Gio
{
/** Action - An action.
* Action represents a single named action.
*
* The main interface to an action is that it can be activated with activate().
* This results in the signal_activate() signal being emitted. An activation
* has a Glib::VariantBase parameter (which may be <tt>0</tt>). The correct
* type for the parameter is determined by a static parameter type (which is
* given at construction time).
*
* An action may optionally have a state, in which case the state may be set
* with change_state(). This call takes a Glib::VariantBase. The correct type
* for the state is determined by a static state type (which is given at
* construction time).
*
* The state may have a hint associated with it, specifying its valid range.
*
* Action is merely the interface to the concept of an action, as described
* above. Various implementations of actions exist, including SimpleAction and
* Gtk::Action.
*
* In all cases, the implementing class is responsible for storing the name of
* the action, the parameter type, the enabled state, the optional state type
* and the state and emitting the appropriate signals when these change. The
* implementor responsible for filtering calls to activate() and change_state()
* for type safety and for the state being enabled.
*
* Probably the only useful thing to do with a Action is to put it inside of a
* SimpleActionGroup.
*
* @newin{2,32}
*/
class Action : public Glib::Interface
{
#ifndef DOXYGEN_SHOULD_SKIP_THIS
public:
typedef Action CppObjectType;
typedef Action_Class CppClassType;
typedef GAction BaseObjectType;
typedef GActionInterface BaseClassType;
private:
friend class Action_Class;
static CppClassType action_class_;
// noncopyable
Action(const Action&);
Action& operator=(const Action&);
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
protected:
/**
* You should derive from this class to use it.
*/
Action();
#ifndef DOXYGEN_SHOULD_SKIP_THIS
/** Called by constructors of derived classes. Provide the result of
* the Class init() function to ensure that it is properly
* initialized.
*
* @param interface_class The Class object for the derived type.
*/
explicit Action(const Glib::Interface_Class& interface_class);
public:
// This is public so that C++ wrapper instances can be
// created for C instances of unwrapped types.
// For instance, if an unexpected C type implements the C interface.
explicit Action(GAction* castitem);
protected:
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
public:
virtual ~Action();
static void add_interface(GType gtype_implementer);
/** 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.
GAction* gobj() { return reinterpret_cast<GAction*>(gobject_); }
///Provides access to the underlying C GObject.
const GAction* gobj() const { return reinterpret_cast<GAction*>(gobject_); }
private:
public:
/** Queries the name of @a action.
*
* @newin{2,28}
*
* @return The name of the action.
*/
Glib::ustring get_name() const;
/** Queries the type of the parameter that must be given when activating
* @a action.
*
* When activating the action using g_action_activate(), the Variant
* given to that function must be of the type returned by this function.
*
* In the case that this function returns <tt>0</tt>, you must not give any
* Variant, but <tt>0</tt> instead.
*
* @newin{2,28}
*
* @return The parameter type.
*/
Glib::VariantType get_parameter_type() const;
/** Queries the type of the state of @a action.
*
* If the action is stateful (e.g. created with
* g_simple_action_new_stateful()) then this function returns the
* VariantType of the state. This is the type of the initial value
* given as the state. All calls to g_action_change_state() must give a
* Variant of this type and g_action_get_state() will return a
* Variant of the same type.
*
* If the action is not stateful (e.g. created with g_simple_action_new())
* then this function will return <tt>0</tt>. In that case, g_action_get_state()
* will return <tt>0</tt> and you must not call g_action_change_state().
*
* @newin{2,28}
*
* @return The state type, if the action is stateful.
*/
Glib::VariantType get_state_type() const;
//TODO: Is there any specific type that can really be used with this? A std::list<>. We must test this.
// See also ActionGroup:::get_action_state_hint().
/** Requests a hint about the valid range of values for the state of
* the action.
*
* If a null Variant is returned it either means that the action is not stateful
* or that there is no hint about the valid range of values for the
* state of the action.
*
* If a Variant array is returned then each item in the array is a
* possible value for the state. If a Variant pair (ie: two-tuple) is
* returned then the tuple specifies the inclusive lower and upper bound
* of valid values for the state.
*
* In any case, the information is merely a hint. It may be possible to
* have a state value outside of the hinted range and setting a value
* within the range may fail.
*
* @param value This will be set to the state range hint.
*/
template <typename T_Value>
void get_state_hint(T_Value& value) const;
//TODO: When we can break ABI, Return a Glib::VariantContainerBase,
// as we already do for ActionGroup::get_action_state_hint(),
// because that is what this returns (to specify a range).
/** Requests a hint about the valid range of values for the state of
* @a action.
*
* If <tt>0</tt> is returned it either means that the action is not stateful
* or that there is no hint about the valid range of values for the
* state of the action.
*
* If a Variant array is returned then each item in the array is a
* possible value for the state. If a Variant pair (ie: two-tuple) is
* returned then the tuple specifies the inclusive lower and upper bound
* of valid values for the state.
*
* In any case, the information is merely a hint. It may be possible to
* have a state value outside of the hinted range and setting a value
* within the range may fail.
*
* The return value (if non-<tt>0</tt>) should be freed with
* Glib::variant_unref() when it is no longer required.
*
* @newin{2,28}
*
* @return The state range hint.
*/
Glib::VariantBase get_state_hint_variant() const;
/** Checks if @a action is currently enabled.
*
* An action must be enabled in order to be activated or in order to
* have its state changed from outside callers.
*
* @newin{2,28}
*
* @return Whether the action is enabled.
*/
bool get_enabled() const;
/** Request for the state of @a action to be changed to @a value,
* assuming that the action has the expected state type.
*
* See get_state_type().
*
* This call merely requests a change. The action may refuse to change
* its state or may change its state to something other than @a value.
* See get_state_hint().
*
* @newin{2,38}
* @param value The new state.
*/
template <typename T_Value>
void change_state(const T_Value& value);
//This is just here to maintain API compatibility,
//by stopping the compiler from calling the
//regular change_state() with a Variant,
//if the application code previously called change_state(VariantBase).
template <typename T_Value>
void change_state(const Glib::Variant<T_Value>& value);
/** Request for the state of @a action to be changed to @a value.
*
* The action must be stateful and @a value must be of the correct type.
* See g_action_get_state_type().
*
* This call merely requests a change. The action may refuse to change
* its state or may change its state to something other than @a value.
* See g_action_get_state_hint().
*
* If the @a value GVariant is floating, it is consumed.
*
* @newin{2,30}
*
* @param value The new state.
*/
void change_state_variant(const Glib::VariantBase& value);
#ifndef GIOMM_DISABLE_DEPRECATED
/** Request for the state of @a action to be changed to @a value.
*
* The action must be stateful and @a value must be of the correct type.
* See g_action_get_state_type().
*
* This call merely requests a change. The action may refuse to change
* its state or may change its state to something other than @a value.
* See g_action_get_state_hint().
*
* If the @a value GVariant is floating, it is consumed.
*
* @newin{2,30}
*
* @deprecated Use the templated method instead, passing a normal C++ type.
*
* @param value The new state.
*/
void change_state(const Glib::VariantBase& value);
#endif // GIOMM_DISABLE_DEPRECATED
/** Queries the current state of the action.
*
* If the action is not stateful then a null Variant will be returned. If the
* action is stateful then the type of the return value is the type
* given by get_state_type().
*
* @param value This will be set to the current state of the action.
*/
template <typename T_Value>
void get_state(T_Value& value) const;
/** Queries the current state of @a action.
*
* If the action is not stateful then <tt>0</tt> will be returned. If the
* action is stateful then the type of the return value is the type
* given by g_action_get_state_type().
*
* The return value (if non-<tt>0</tt>) should be freed with
* Glib::variant_unref() when it is no longer required.
*
* @newin{2,28}
*
* @return The current state of the action.
*/
Glib::VariantBase get_state_variant() const;
/** Activates the action.
*/
void activate();
/** Activates the action.
*
* The @a parameter must be the correct type of parameter for the action (ie:
* the parameter type given at construction time), if any.
*
* @param parameter: The parameter to the activation
*/
template <typename T_Value>
void activate(const T_Value& parameter);
//This is just here to maintain API compatibility,
//by stopping the compiler from calling the
//regular activate() with a Variant,
//if the application code previously called activate(VariantBase).
template <typename T_Value>
void activate(const Glib::Variant<T_Value>& parameter);
/** Activates the action.
*
* @a parameter must be the correct type of parameter for the action (ie:
* the parameter type given at construction time). If the parameter
* type was <tt>0</tt> then @a parameter must also be <tt>0</tt>.
*
* If the @a parameter GVariant is floating, it is consumed.
*
* @newin{2,28}
*
* @param parameter The parameter to the activation.
*/
void activate_variant(const Glib::VariantBase& parameter);
#ifndef GIOMM_DISABLE_DEPRECATED
/** Activates the action.
*
* @a parameter must be the correct type of parameter for the action (ie:
* the parameter type given at construction time). If the parameter
* type was <tt>0</tt> then @a parameter must also be <tt>0</tt>.
*
* If the @a parameter GVariant is floating, it is consumed.
*
* @newin{2,28}
*
* @deprecated Use the templated method instead, passing a normal C++ type.
*
* @param parameter The parameter to the activation.
*/
void activate(const Glib::VariantBase& parameter);
#endif // GIOMM_DISABLE_DEPRECATED
/** Checks if @a action_name is valid.
*
* @a action_name is valid if it consists only of alphanumeric characters,
* plus '-' and '.'. The empty string is not a valid action name.
*
* It is an error to call this function with a non-utf8 @a action_name.
* @a action_name must not be <tt>0</tt>.
*
* @newin{2,38}
*
* @param action_name An potential action name.
* @return <tt>true</tt> if @a action_name is valid.
*/
static bool name_is_valid(const Glib::ustring& action_name);
/** Parses a detailed action name into its separate name and target components.
*
* Detailed action names can have three formats. See parse_detailed_name_variant().
*
* @newin{2,40}
* @param detailed_name A detailed action name.
* @param[out] action_name The action name.
* @param[out] target_value The target value.
* @throw Glib::VariantParseError if @a detailed_name has an invalid format or a target of an unexpected type.
*/
template <typename T_Value>
static void parse_detailed_name(const Glib::ustring& detailed_name, Glib::ustring& action_name, T_Value& target_value);
/** Parses a detailed action name into its separate name and target
* components.
*
* Detailed action names can have three formats.
*
* The first format is used to represent an action name with no target
* value and consists of just an action name containing no whitespace
* nor the characters ':', '(' or ')'. For example: "app.action".
*
* The second format is used to represent an action with a target value
* that is a non-empty string consisting only of alphanumerics, plus '-'
* and '.'. In that case, the action name and target value are
* separated by a double colon ("::"). For example:
* "app.action::target".
*
* The third format is used to represent an action with any type of
* target value, including strings. The target value follows the action
* name, surrounded in parens. For example: "app.action(42)". The
* target value is parsed using Glib::variant_parse(). If a tuple-typed
* value is desired, it must be specified in the same way, resulting in
* two sets of parens, for example: "app.action((1,2,3))". A string
* target can be specified this way as well: "app.action('target')".
* For strings, this third format must be used if * target value is
* empty or contains characters other than alphanumerics, '-' and '.'.
*
* @newin{2,38}
*
* @param detailed_name A detailed action name.
* @param action_name The action name.
* @param target_value The target value, or <tt>0</tt> for no target.
* @return <tt>true</tt> if successful, else <tt>false</tt> with @a error set.
*/
static void parse_detailed_name_variant(const Glib::ustring& detailed_name, Glib::ustring& action_name, Glib::VariantBase& target_value);
/** Formats a detailed action name from the action's action_name and @a target_value.
*
* This function is the opposite of parse_detailed_action_name().
* It will produce a string that can be parsed back to the @a action_name
* and @a target_value by that function.
*
* See that function for the types of strings that will be printed by
* this function.
*
* @param target_value A Variant target value.
* @result A detailed format string.
*/
template <typename T_Value>
Glib::ustring print_detailed_name(const T_Value& target_value);
/** Formats a detailed action name from @a action_name and @a target_value.
*
* It is an error to call this function with an invalid action name.
*
* This function is the opposite of
* Glib::action_parse_detailed_action_name(). It will produce a string that
* can be parsed back to the @a action_name and @a target_value by that
* function.
*
* See that function for the types of strings that will be printed by
* this function.
*
* @newin{2,38}
*
* @param action_name A valid action name.
* @param target_value A Variant target value, or <tt>0</tt>.
* @return A detailed format string.
*/
static Glib::ustring print_detailed_name_variant(const Glib::ustring& action_name, const Glib::VariantBase& target_value);
#ifdef GLIBMM_PROPERTIES_ENABLED
/** If the action can be activated.
*
* 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_enabled() const;
#endif //#GLIBMM_PROPERTIES_ENABLED
#ifdef GLIBMM_PROPERTIES_ENABLED
/** The name used to invoke the action.
*
* 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_name() const;
#endif //#GLIBMM_PROPERTIES_ENABLED
#ifdef GLIBMM_PROPERTIES_ENABLED
/** The type of GVariant passed to activate().
*
* 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::VariantType > property_parameter_type() const;
#endif //#GLIBMM_PROPERTIES_ENABLED
#ifdef GLIBMM_PROPERTIES_ENABLED
/** The state the action is in.
*
* 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::VariantBase > property_state() const;
#endif //#GLIBMM_PROPERTIES_ENABLED
#ifdef GLIBMM_PROPERTIES_ENABLED
/** The type of the state kept by the action.
*
* 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::VariantType > property_state_type() const;
#endif //#GLIBMM_PROPERTIES_ENABLED
virtual Glib::ustring get_name_vfunc() const;
virtual Glib::VariantType get_parameter_type_vfunc() const;
virtual Glib::VariantType get_state_type_vfunc() const;
virtual Glib::VariantBase get_state_hint_vfunc() const;
virtual bool get_enabled_vfunc() const;
virtual Glib::VariantBase get_state_vfunc() const;
virtual void change_state_vfunc(const Glib::VariantBase& value);
virtual void activate_vfunc(const Glib::VariantBase& parameter);
public:
public:
//C++ methods used to invoke GTK+ virtual functions:
protected:
//GTK+ Virtual Functions (override these to change behaviour):
//Default Signal Handlers::
};
template <typename T_Value>
void Action::get_state(T_Value& value) const
{
value = T_Value(); //Make sure that it is initialized.
typedef Glib::Variant<T_Value> type_glib_variant;
g_return_if_fail(
g_variant_type_equal(g_action_get_state_type(const_cast<GAction*>(gobj())), type_glib_variant::variant_type().gobj()));
const Glib::VariantBase variantBase = get_state_variant();
const type_glib_variant variantDerived = variantBase.cast_dynamic<type_glib_variant>(variantBase);
value = variantDerived.get();
}
template <typename T_Value>
void Action::get_state_hint(T_Value& value) const
{
value = T_Value(); //Make sure that it is initialized.
typedef Glib::Variant<T_Value> type_glib_variant;
const Glib::VariantBase variantBase = get_state_hint_variant();
// We can't check the type (a range) that will be returned before getting the range hint.
g_return_if_fail(
variantBase.is_of_type(type_glib_variant::variant_type()) );
const type_glib_variant variantDerived = variantBase.cast_dynamic<type_glib_variant>(variantBase);
value = variantDerived.get();
}
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// Doxygen 1.8.4 does not understand that this is the static function previously declared.
template <typename T_Value>
//static
void Action::parse_detailed_name(const Glib::ustring& detailed_name, Glib::ustring& action_name, T_Value& target_value)
{
action_name.clear(); //Make sure the output arguments are initialized.
target_value = T_Value();
typedef Glib::Variant<T_Value> type_glib_variant;
Glib::VariantBase target_value_variantBase;
parse_detailed_name_variant(detailed_name, action_name, target_value_variantBase);
if (!target_value_variantBase)
throw Glib::VariantParseError(Glib::VariantParseError::TYPE_ERROR,
"Detailed action name '" + detailed_name + "' has no target. Expected a target of type " +
type_glib_variant::variant_type().get_string());
if (!target_value_variantBase.is_of_type(type_glib_variant::variant_type()))
throw Glib::VariantParseError(Glib::VariantParseError::TYPE_ERROR,
"Detailed action name '" + detailed_name + "' has a target of type " +
target_value_variantBase.get_type_string() + ". Expected " + type_glib_variant::variant_type().get_string());
const type_glib_variant target_value_variantDerived =
target_value_variantBase.cast_dynamic<type_glib_variant>(target_value_variantBase);
target_value = target_value_variantDerived.get();
}
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
template <typename T_Value>
Glib::ustring Action::print_detailed_name(const T_Value& target_value)
{
typedef Glib::Variant<T_Value> type_glib_variant;
g_return_val_if_fail(
g_variant_type_equal(g_action_get_parameter_type(const_cast<GAction*>(gobj())), type_glib_variant::variant_type().gobj()),
Glib::ustring());
return print_detailed_name_variant(get_name(), type_glib_variant::create(target_value));
}
template <typename T_Value>
void Action::change_state(const T_Value& value)
{
typedef Glib::Variant<T_Value> type_glib_variant;
g_return_if_fail(
g_variant_type_equal(g_action_get_state_type(const_cast<GAction*>(gobj())), type_glib_variant::variant_type().gobj()));
change_state_variant(type_glib_variant::create(value));
}
template <typename T_Value>
void Action::change_state(const Glib::Variant<T_Value>& value)
{
change_state_variant(value);
}
template <typename T_Value>
void Action::activate(const T_Value& parameter)
{
typedef Glib::Variant<T_Value> type_glib_variant;
g_return_if_fail(
g_variant_type_equal(g_action_get_parameter_type(const_cast<GAction*>(gobj())), type_glib_variant::variant_type().gobj()));
activate_variant(type_glib_variant::create(parameter));
}
template <typename T_Value>
void Action::activate(const Glib::Variant<T_Value>& value)
{
activate_variant(value);
}
} // 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::Action
*/
Glib::RefPtr<Gio::Action> wrap(GAction* object, bool take_copy = false);
} // namespace Glib
#endif /* _GIOMM_ACTION_H */
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