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Diffstat (limited to 'libs/glibmm2/glibmm/object.cc')
| -rw-r--r-- | libs/glibmm2/glibmm/object.cc | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/libs/glibmm2/glibmm/object.cc b/libs/glibmm2/glibmm/object.cc deleted file mode 100644 index 007002b779..0000000000 --- a/libs/glibmm2/glibmm/object.cc +++ /dev/null @@ -1,312 +0,0 @@ -// -*- c++ -*- -/* $Id$ */ - -/* Copyright 1998-2002 The gtkmm Development Team - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library 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/object.h> -#include <glibmm/private/object_p.h> -#include <glibmm/property.h> - -#include <glib.h> -#include <glib-object.h> -#include <gobject/gvaluecollector.h> - -#include <cstdarg> - -#include <cstring> - -//Weak references: -//I'm not sure what the point of these are apart from being a hacky way out of circular references, -//but maybe we could make it easier to use them by making a Java Reference Object -style class like so: -// Glib::WeakRef<SomeDerivedObject> weakrefSomeObject(object1); -// ... -// if(weakrefSomeObject->isStillAlive()) -// { -// weakrefSomeObject->some_method(); -// } -// else -// { -// //Deal with it, maybe recreating the object. -// } -// -// Without this, the coder has to define his own signal handler which sets his own isStillAlive boolean. -// weakrefSomeObject<> could still have its own signal_destroyed signal so that coders can choose to deal -// with the destruction as soon as it happens instead of just checking later before they try to use it. - - -namespace Glib -{ - -ConstructParams::ConstructParams(const Glib::Class& glibmm_class_) -: - glibmm_class (glibmm_class_), - n_parameters (0), - parameters (0) -{} - -/* The implementation is mostly copied from gobject.c, with some minor tweaks. - * Basically, it looks up each property name to get its GType, and then uses - * G_VALUE_COLLECT() to store the varargs argument in a GValue of the correct - * type. - */ -ConstructParams::ConstructParams(const Glib::Class& glibmm_class_, - const char* first_property_name, ...) -: - glibmm_class (glibmm_class_), - n_parameters (0), - parameters (0) -{ - va_list var_args; - va_start(var_args, first_property_name); - - GObjectClass *const g_class = - static_cast<GObjectClass*>(g_type_class_ref(glibmm_class.get_type())); - - unsigned int n_alloced_params = 0; - char* collect_error = 0; // output argument of G_VALUE_COLLECT() - - for(const char* name = first_property_name; - name != 0; - name = va_arg(var_args, char*)) - { - GParamSpec *const pspec = g_object_class_find_property(g_class, name); - - if(!pspec) - { - g_warning("Glib::ConstructParams::ConstructParams(): " - "object class `%s' has no property named `%s'", - g_type_name(glibmm_class.get_type()), name); - break; - } - - if(n_parameters >= n_alloced_params) - parameters = g_renew(GParameter, parameters, n_alloced_params += 8); - - GParameter& param = parameters[n_parameters]; - - param.name = name; - param.value.g_type = 0; - - // Fill the GValue with the current vararg, and move on to the next one. - g_value_init(¶m.value, G_PARAM_SPEC_VALUE_TYPE(pspec)); - G_VALUE_COLLECT(¶m.value, var_args, 0, &collect_error); - - if(collect_error) - { - g_warning("Glib::ConstructParams::ConstructParams(): %s", collect_error); - g_free(collect_error); - g_value_unset(¶m.value); - break; - } - - ++n_parameters; - } - - g_type_class_unref(g_class); - - va_end(var_args); -} - -ConstructParams::~ConstructParams() -{ - while(n_parameters > 0) - g_value_unset(¶meters[--n_parameters].value); - - g_free(parameters); -} - -/* - * Some compilers require the existance of a copy constructor in certain - * usage contexts. This implementation is fully functional, but unlikely - * to be ever actually called due to optimization. - */ -ConstructParams::ConstructParams(const ConstructParams& other) -: - glibmm_class (other.glibmm_class), - n_parameters (other.n_parameters), - parameters (g_new(GParameter, n_parameters)) -{ - for(unsigned int i = 0; i < n_parameters; ++i) - { - parameters[i].name = other.parameters[i].name; - parameters[i].value.g_type = 0; - - g_value_init(¶meters[i].value, G_VALUE_TYPE(&other.parameters[i].value)); - g_value_copy(&other.parameters[i].value, ¶meters[i].value); - } -} - - -/**** Glib::Object_Class ***************************************************/ - -const Glib::Class& Object_Class::init() -{ - if(!gtype_) - { - class_init_func_ = &Object_Class::class_init_function; - register_derived_type(G_TYPE_OBJECT); - } - - return *this; -} - -void Object_Class::class_init_function(void*, void*) -{} - -Object* Object_Class::wrap_new(GObject* object) -{ - return new Object(object); -} - - -/**** Glib::Object *********************************************************/ - -// static data -Object::CppClassType Object::object_class_; - -Object::Object() -{ - // This constructor is ONLY for derived classes that are NOT wrappers of - // derived C objects. For instance, Gtk::Object should NOT use this - // constructor. - - //g_warning("Object::Object(): Did you really mean to call this?"); - - // If Glib::ObjectBase has been constructed with a custom typeid, we derive - // a new GType on the fly. This works because ObjectBase is a virtual base - // class, therefore its constructor is always executed first. - - GType object_type = G_TYPE_OBJECT; // the default -- not very useful - - if(custom_type_name_ && !is_anonymous_custom_()) - { - object_class_.init(); - object_type = object_class_.clone_custom_type(custom_type_name_); //A type that is derived from GObject. - } - - // Create a new GObject with the specified array of construct properties. - // This works with custom types too, since those inherit the properties of - // their base class. - - void *const new_object = g_object_newv(object_type, 0, 0); - - // Connect the GObject and Glib::Object instances. - ObjectBase::initialize(static_cast<GObject*>(new_object)); - -} - -Object::Object(const Glib::ConstructParams& construct_params) -{ - GType object_type = construct_params.glibmm_class.get_type(); - - // If Glib::ObjectBase has been constructed with a custom typeid, we derive - // a new GType on the fly. This works because ObjectBase is a virtual base - // class, therefore its constructor is always executed first. - - if(custom_type_name_ && !is_anonymous_custom_()) - object_type = construct_params.glibmm_class.clone_custom_type(custom_type_name_); - - // Create a new GObject with the specified array of construct properties. - // This works with custom types too, since those inherit the properties of - // their base class. - - void *const new_object = g_object_newv( - object_type, construct_params.n_parameters, construct_params.parameters); - - // Connect the GObject and Glib::Object instances. - ObjectBase::initialize(static_cast<GObject*>(new_object)); -} - -Object::Object(GObject* castitem) -{ - //I disabled this check because libglademm really does need to do this. - //(actually it tells libglade to instantiate "gtkmm_" types. - //The 2nd instance bug will be caught elsewhere anyway. -/* - static const char gtkmm_prefix[] = "gtkmm__"; - const char *const type_name = G_OBJECT_TYPE_NAME(castitem); - - if(strncmp(type_name, gtkmm_prefix, sizeof(gtkmm_prefix) - 1) == 0) - { - g_warning("Glib::Object::Object(GObject*): " - "An object of type '%s' was created directly via g_object_new(). " - "The Object::Object(const Glib::ConstructParams&) constructor " - "should be used instead.\n" - "This could happen if the C instance lived longer than the C++ instance, so that " - "a second C++ instance was created automatically to wrap it. That would be a gtkmm bug that you should report.", - type_name); - } -*/ - - // Connect the GObject and Glib::Object instances. - ObjectBase::initialize(castitem); -} - -Object::~Object() -{ - cpp_destruction_in_progress_ = true; -} - -/* -RefPtr<Object> Object::create() -{ - // Derived classes will actually return RefPtr<>s that contain useful instances. - return RefPtr<Object>(); -} -*/ - -GType Object::get_type() -{ - return object_class_.init().get_type(); -} - -GType Object::get_base_type() -{ - return G_TYPE_OBJECT; -} - -// Data services -void* Object::get_data(const QueryQuark& id) -{ - return g_object_get_qdata(gobj(),id); -} - -void Object::set_data(const Quark& id, void* data) -{ - g_object_set_qdata(gobj(),id,data); -} - -void Object::set_data(const Quark& id, void* data, DestroyNotify destroy) -{ - g_object_set_qdata_full(gobj(), id, data, destroy); -} - -void Object::remove_data(const QueryQuark& id) -{ - // missing in glib?? - g_return_if_fail(id.id() > 0); - g_datalist_id_remove_data(&gobj()->qdata, id); -} - -void* Object::steal_data(const QueryQuark& id) -{ - return g_object_steal_qdata(gobj(), id); -} - -} // namespace Glib - |