observe.cpp

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#ifdef HAVE_CONFIG_H
#include <../../nrnconf.h>
#endif
/*
 * Copyright (c) 1992 Stanford University
 * Copyright (c) 1992 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and 
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Stanford and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Stanford and Silicon Graphics.
 * 
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
 *
 * IN NO EVENT SHALL STANFORD OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 */
 
/*
 * Observable - object to observe
 */
 
#include <InterViews/observe.h>
#include "utils/enumerate.h"
 
Observable::~Observable() {
    // in case a disconnect removes items from the observers
    for (long long i = static_cast<long long>(observers_.size()) - 1; i >= 0; --i) {
        observers_[i]->disconnect(this);
        if (i > observers_.size()) {
            i = observers_.size();
        }
    }
}
 
void Observable::attach(Observer* o) {
    observers_.push_back(o);
}
 
void Observable::detach(Observer* o) {
    erase_first(observers_, o);
}
 
void Observable::notify() {
    for (auto& obs: observers_) {
        obs->update(this);
    }
}