/**
* TODO 修改购物车里食物的数量（可选）.
*
* @see com.yummy.service.ICartManager#update(int, int)
*/
public void update(int id, int quantities) {
// TODO Auto-generated method stub
for (int i = 0; i < items.size(); i++) {
ItemDTO temp = items.get(i);
if (temp.getId() == id) {
temp.setOrderCount(quantities);
}
}
}
/**
* TODO 增加数量，用户重复点击放入购物车时调用。（可选）.
*
* @see com.yummy.service.ICartManager#increase(int, int)
*/
public void increase(int id, int quantities) {
// TODO Auto-generated method stub
for (int i = 0; i < items.size(); i++) {
if (items.get(i).getId() == id) {
ItemDTO temp = items.get(i);
temp.setOrderCount(temp.getOrderCount() + quantities);
break;
}
}
}
/**
* TODO 判断购物车是否已有相同食物存在（可选）.
*
* @see com.yummy.service.ICartManager#isItemExist(int)
*/
public boolean isItemExist(int id) {
// TODO Auto-generated method stub
boolean flag = false;
for (int i = 0; i < items.size(); i++) {
ItemDTO temp = items.get(i);
if (temp.getId() == id) {
flag = true;
}
}
return flag;
}
/**
* TODO 删除购物车里面的食物（可选）.
*
* @see com.yummy.service.ICartManager#delete(int)
*/
public void delete(int id) {
// TODO Auto-generated method stub
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
ItemDTO temp = (ItemDTO) iterator.next();
if (temp.getId() == id) {
items.remove(temp);
break;
}
}
}
public float getTotalPrice() {
// TODO Auto-generated method stub
float totalPrice = 0;
if (items.size() > 0) {
for (int i = 0; i < items.size(); i++) {
ItemDTO item = items.get(i);
totalPrice += item.getPrice() * item.getOrderCount();
}
int temp = (int) (totalPrice * 100 + 0.5);
totalPrice = (float) (temp / 100.0);
}
return totalPrice;
}