TableColumnModelObservable.java example

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/*
 * Copyright (c) 2011, grossmann
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package org.jowidgets.tools.controller;

import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Set;

import org.jowidgets.common.model.ITableColumnModelListener;
import org.jowidgets.common.model.ITableColumnModelObservable;
import org.jowidgets.util.Assert;

public class TableColumnModelObservable implements ITableColumnModelObservable {

    private final Set<ITableColumnModelListener> listeners;

    public TableColumnModelObservable() {
        this.listeners = new LinkedHashSet<ITableColumnModelListener>();
    }

    @Override
    public void addColumnModelListener(final ITableColumnModelListener listener) {
        Assert.paramNotNull(listener, "listener");
        listeners.add(listener);
    }

    @Override
    public void removeColumnModelListener(final ITableColumnModelListener listener) {
        Assert.paramNotNull(listener, "listener");
        listeners.remove(listener);
    }

    public void fireColumnsAdded(final int[] columnIndices) {
        for (final ITableColumnModelListener listener : new LinkedList<ITableColumnModelListener>(listeners)) {
            listener.columnsAdded(columnIndices);
        }
    }

    public void fireColumnsRemoved(final int[] columnIndices) {
        for (final ITableColumnModelListener listener : new LinkedList<ITableColumnModelListener>(listeners)) {
            listener.columnsRemoved(columnIndices);
        }
    }

    public void fireColumnsChanged(final int[] columnIndices) {
        for (final ITableColumnModelListener listener : new LinkedList<ITableColumnModelListener>(listeners)) {
            listener.columnsChanged(columnIndices);
        }
    }

}