ObjectCollection.cpp

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#include "ObjectCollection.h"

#include "Object.h"
#include "ObjectLink.h"
#include "CollectionIterator.h"

#include <stdio.h>

ObjectCollection::ObjectCollection ()
: First(0), Last(0), NumberOfObjects(0) {
}

ObjectCollection::~ObjectCollection () {
    delete First;
    First = 0;
    delete Last;
    Last = 0;
}

class Object *ObjectCollection::Get (int pAt) {
    if ((pAt < 1) || (pAt > this->GetLength())) return 0;
    ObjectLink *link;
    link= this->First;
    while (pAt > 1) {
        link= link->GetNext();
        pAt--;
    }
    return link->GetValue();
}

void ObjectCollection::Put (class Object *pO) {
    ObjectLink *newLink= new ObjectLink(pO);
    if (this->IsEmpty())
        this->SetFirst(newLink);        
    else
        /*      this->GetLast()->SetNext(newLink);      */
    {   ObjectLink *_pa_tmp_temp_1 = this->GetLast();
    _pa_tmp_temp_1->SetNext(newLink);   };
    this->SetLast(newLink);
    this->NumberOfObjects++;
}

bool ObjectCollection::IsEmpty () {
    return (this->GetLength() == 0);
}

int ObjectCollection::GetLength () {
    return this->NumberOfObjects;
}

void ObjectCollection::Print () {
    //---- CollectionIterator Iter(this);
    CollectionIterator *Iter= new CollectionIterator(this);
    Object *anObject;

    this->Object::Print();
    fprintf(stdout, "I contain %d objects:\n", this->GetLength());

    anObject= Iter->GetNext();
    while (anObject != 0) {
        fprintf(stdout, "  ");
        anObject->Print();
        anObject = Iter->GetNext();
    }
}

void ObjectCollection::SetFirst (ObjectLink *oL) {
    this->First = oL;
}

ObjectLink *ObjectCollection::GetFirst () {
    return this->First;
}

void ObjectCollection::SetLast (ObjectLink *oL) {
    this->Last = oL;
}

ObjectLink *ObjectCollection::GetLast () {
    return this->Last;
}

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