116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/*
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PIP - Platform Independent Primitives
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Object, base class of some PIP classes, provide EVENT -> EVENT_HANDLER mechanism
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Copyright (C) 2014 Ivan Pelipenko peri4ko@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "piobject.h"
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PIVector<PIObject * > PIObject::objects;
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/** \class PIObject
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* \brief This is base class for any classes which use events -> handlers mechanism.
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* \details
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* \section PIObject_sec0 Events and Event handlers
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* %PIObject provide notification mechanism similar Qt but implemented
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* on language capabilities without any special preprocessors or compilers.
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* Any class inherits PIObject should use macro \a PIOBJECT() immediate
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* after declaration to proper compile.
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*
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* Event is a some abstract event that can be raised at any time.
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* Event is a function but declared with special macro \a EVENT().
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* To raise event simply execute event function.
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*
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* Event handler is a function but declared with special macro
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* \a EVENT_HANDLER(). You can use event handlers as ordinary functions.
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*
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* Main goal of this mechanism is perform abstract connections between
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* various objects. This functionality provide macro \a CONNECT() which
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* connect some event of first object to some event handler or event of
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* second object. Each event can be connected any times to any event handlers.
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*
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* \image html events_handlers.png
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*
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* Example: \snippet piobject.cpp main
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* Result:
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\code{.cpp}
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handler B: 2 , 0.5
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handler A: event to handler
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handler A: event to event
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\endcode
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*/
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PIObject::PIObject(const PIString & name): emitter_(0) {
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piMonitor.objects++;
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setName(name);
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setDebug(true);
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objects << this;
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}
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void PIObject::piConnect(const PIString & src, const PIString & sig, void * dest, void * ev_h) {
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PIObject * o = findByName(src);
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if (o == 0) {
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piCout << "[PIObject] Can`t find object with name \"" << src << "\"!";
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return;
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}
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o->connections << Connection(ev_h, 0, sig, dest);
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}
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void PIObject::piConnect(PIObject * src, const PIString & sig, const PIString & dest, void * ev_h) {
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PIObject * o = findByName(dest);
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if (o == 0) {
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piCout << "[PIObject] Can`t find object with name \"" << dest << "\"!";
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return;
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}
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src->connections << Connection(ev_h, 0, sig, o);
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}
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void PIObject::piConnect(const PIString & src, const PIString & sig, const PIString & dest, void * ev_h) {
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PIObject * s = findByName(src);
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if (s == 0) {
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piCout << "[PIObject] Can`t find object with name \"" << src << "\"!";
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return;
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}
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PIObject * d = findByName(dest);
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if (d == 0) {
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piCout << "[PIObject] Can`t find object with name \"" << dest << "\"!";
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return;
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}
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s->connections << Connection(ev_h, 0, sig, d);
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}
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/*
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PIStringList PIObject::events() {
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PIStringList l;
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for (PIMap<NamedFunction, PIString>::const_iterator i = signals_.begin(); i != signals_.end(); i++)
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l << (*i).first;
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return l;
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}
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PIStringList PIObject::eventHandlers() {
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PIStringList l;
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for (PIMap<NamedFunction, PIString>::const_iterator i = slots_.begin(); i != slots_.end(); i++)
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l << (*i).first;
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return l;
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}
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*/
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