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WebLaf is a Java Swing Look and Feel and extended components library for cross-platform applications
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/*
 * This file is part of WebLookAndFeel library.
 *
 * WebLookAndFeel library 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 3 of the License, or
 * (at your option) any later version.
 *
 * WebLookAndFeel library 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 WebLookAndFeel library.  If not, see .
 */

package com.alee.extended.tree;

import com.alee.laf.checkbox.CheckState;

import javax.swing.tree.DefaultMutableTreeNode;
import java.util.Collection;
import java.util.List;

/**
 * Special checking model for WebCheckBoxTree.
 *
 * @author Mikle Garin
 */

public interface TreeCheckingModel
{
    /**
     * Returns list of checked nodes.
     *
     * @param optimize whether should optimize the resulting list by removing checked node children or not
     * @return list of checked nodes
     */
    public List getCheckedNodes ( boolean optimize );

    /**
     * Returns list of nodes in mixed state.
     *
     * @return list of nodes in mixed state
     */
    public List getMixedNodes ();

    /**
     * Sets specified nodes state to checked.
     *
     * @param nodes   nodes to check
     * @param checked whether the specified tree nodes should be checked or not
     */
    public void setChecked ( Collection nodes, boolean checked );

    /**
     * Returns specified tree node check state.
     *
     * @param node tree node to process
     * @return specified tree node check state
     */
    public CheckState getCheckState ( E node );

    /**
     * Sets whether the specified tree node is checked or not.
     *
     * @param node    tree node to process
     * @param checked whether the specified tree node should be checked or not
     */
    public void setChecked ( E node, boolean checked );

    /**
     * Inverts tree node check.
     *
     * @param node tree node to process
     */
    public void invertCheck ( E node );

    /**
     * Inverts tree nodes check.
     *
     * @param nodes list of tree nodes to process
     */
    public void invertCheck ( Collection nodes );

    /**
     * Unchecks all tree nodes.
     */
    public void uncheckAll ();

    /**
     * Checks all tree nodes.
     */
    public void checkAll ();

    /**
     * Notifies model about checking mode change.
     *
     * @param recursive whether checked or unchecked node children should be checked or unchecked recursively or not
     */
    public void checkingModeChanged ( boolean recursive );

    /**
     * Adds check state change listener.
     *
     * @param listener check state change listener to add
     */
    public void addCheckStateChangeListener ( CheckStateChangeListener listener );

    /**
     * Removes check state change listener.
     *
     * @param listener check state change listener to remove
     */
    public void removeCheckStateChangeListener ( CheckStateChangeListener listener );
}