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products/sources/formale Sprachen/Java/Netbeans/ide/spi.viewmodel/examples/ (Apache JAVA IDE Version 28^©) Datei vom 3.10.2025 mit Größe 3 kB

Quelle TreeModelExample3.java Sprache: JAVA

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

import java.awt.event.ActionEvent;
import java.io.File;
import java.net.MalformedURLException;
import java.util.ArrayList;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import org.netbeans.spi.viewmodel.Models;
import org.netbeans.spi.viewmodel.NodeActionsProvider;
import org.netbeans.spi.viewmodel.NodeModel;
import org.netbeans.spi.viewmodel.TreeModel;
import org.netbeans.spi.viewmodel.TreeModelListener;

public class TreeModelExample3 implements TreeModel, NodeModel, NodeActionsProvider {

    public Object[] getChildren (Object parent, int from, int to) {
        if (parent == ROOT)
            return File.listRoots ();
        return ((File) parent).listFiles ();
    }

    public Object getRoot () {
        return ROOT;
    }

    public boolean isLeaf (Object node) {
        if (node == ROOT)
            return false;
        return ((File) node).isFile ();
    }

    public void addTreeModelListener (TreeModelListener l) {}
    public void removeTreeModelListener (TreeModelListener l) {}

    public String getDisplayName (Object node) {
        if (node == ROOT) return "Name";
        String name = ((File) node).getName ();
        if (name.length () < 1) return ((File) node).getAbsolutePath ();
        return name;
    }

    public String getIconBase (Object node) {
        if (node == ROOT) return "folder";
        if (((File) node).isDirectory ()) return "folder";
        return "file";
    }

    public String getShortDescription (Object node) {
        if (node == ROOT) return "Name";
        return ((File) node).getAbsolutePath ();
    }

    public Action[] getActions (final Object node) {
        return new Action [] {
            new AbstractAction ("Open") {
                public void actionPerformed (ActionEvent e) {
                    performDefaultAction (node);
                }
            },
            new AbstractAction ("Delete") {
                public void actionPerformed (ActionEvent e) {
                    ((File) node).delete ();
                }
            }
        };
    }

    public void performDefaultAction (Object node) {
        try {
            JFrame f = new JFrame ("View");
            f.getContentPane ().add (new JEditorPane (((File) node).toURL ()));
            f.pack ();
            f.show ();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main (String[] args) {
        TreeModelExample3 tme = new TreeModelExample3 ();
        JComponent ttv = Models.createView (
            tme,              // TreeModel
            tme,              // NodeModel
            null,             // TableModel
            tme,              // NodeActionsProvider
            new ArrayList ()  // list of ColumnModels
        );
        JFrame f = new JFrame ("Tree Model Example 3");
        f.getContentPane ().add (ttv);
        f.pack ();
        f.show ();
    }
}

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