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/*
 * Copyright (c) 2011-2015 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Client/BlockListImpl.h>

#include <algorithm>

#include <Swiften/Base/foreach.h>

using namespace Swift;

BlockListImpl::BlockListImpl() : state(Init) {

}

void BlockListImpl::setItems(const std::vector<JID>& newItems) {
    // JIDs which are in the current list but not in the new list, are removed.
    foreach (const JID& jid, items) {
        if (std::find(newItems.begin(), newItems.end(), jid) == newItems.end()) {
            onItemRemoved(jid);
        }
    }

    // JIDs which are in the new list but not in the current list, are added.
    foreach (const JID& jid, newItems) {
        if (std::find(items.begin(), items.end(), jid) == items.end()) {
            onItemAdded(jid);
        }
    }
    items = newItems;
}

void BlockListImpl::addItem(const JID& item) {
    if (std::find(items.begin(), items.end(), item) == items.end()) {
        items.push_back(item);
        onItemAdded(item);
    }
}

void BlockListImpl::removeItem(const JID& item) {
    size_t oldSize = items.size();
    items.erase(std::remove(items.begin(), items.end(), item), items.end());
    if (items.size() != oldSize) {
        onItemRemoved(item);
    }
}

void BlockListImpl::setState(State state) {
    if (this->state != state) {
        this->state = state;
        onStateChanged();
    }
}

void BlockListImpl::addItems(const std::vector<JID>& items) {
    foreach (const JID& item, items) {
        addItem(item);
    }
}

void BlockListImpl::removeItems(const std::vector<JID>& items) {
    std::vector<JID> itemsToRemove = items;
    foreach (const JID& item, itemsToRemove) {
        removeItem(item);
    }
}

void BlockListImpl::removeAllItems() {
    removeItems(items);
}