TristateButtonModel.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.gui.utils.tristate;
 
import java.awt.event.ItemEvent;
import javax.swing.JToggleButton.ToggleButtonModel;
import org.jetbrains.annotations.NotNull;
 
public class TristateButtonModel extends ToggleButtonModel {
 
    private static final long serialVersionUID = 1L;
 
    @NotNull
    private TristateState state = TristateState.DESELECTED;
 
    public TristateButtonModel(@NotNull final TristateState initialState) {
        setTristateState(initialState);
    }
 
    public TristateButtonModel() {
        this(TristateState.DESELECTED);
    }
 
    @Override
    public void setEnabled(final boolean b) {
        super.setEnabled(b);
        updateCheckboxState();
    }
 
    @Override
    public void setSelected(final boolean b) {
        setTristateState(TristateState.getTristateState(b));
    }
 
    @Override
    public void setArmed(final boolean b) {
        // ignore
    }
 
    @Override
    public void setPressed(final boolean b) {
        // ignore
    }
 
    @NotNull
    public TristateState getTristateState() {
        return state;
    }
 
    public final void setTristateState(@NotNull final TristateState state) {
        this.state = state;
        updateCheckboxState();
 
        if (state == TristateState.INDETERMINATE && isEnabled()) {
            fireStateChanged();
            final int indeterminate = 3;
            fireItemStateChanged(new ItemEvent(this, ItemEvent.ITEM_STATE_CHANGED, this, indeterminate));
        }
    }
 
    private void updateCheckboxState() {
        super.setSelected(state != TristateState.DESELECTED);
        super.setArmed(state == TristateState.INDETERMINATE);
        super.setPressed(state == TristateState.INDETERMINATE);
 
    }
 
}