sourcebrowserwindow.java

java实现浏览器等本地桌面的功能

/*
 * SourceBrowserWindow.java
 *
 * Created on April 5, 2005, 9:00 AM
 */

package org.jdesktop.demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.text.rtf.RTFEditorKit;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
import org.jdesktop.swingx.JXTitledPanel;
import org.jdesktop.swingx.util.WindowUtils;

/**
 *
 * @author  rbair
 */
public class SourceBrowserWindow extends javax.swing.JFrame {
    private File rootDir;
    
    /** Creates new form SourceBrowserWindow */
    public SourceBrowserWindow(File sourceRootDir) {
//        rootDir = new File("/usr/local/src/swinglabs-demos/swinglabs-demos/src/java");
        rootDir = sourceRootDir;
        initComponents();
        setSize(800, 600);
        setLocation(WindowUtils.getPointForCentering(this));
    }
    
    public void setSelectedSourceFile(File sourceFile) {
       // Build vector of path elements      
       File pathElement = sourceFile;
       Vector pathElements = new Vector();
       pathElements.add(pathElement);
       while (!pathElement.equals(rootDir))  {
           pathElement = pathElement.getParentFile();
           pathElements.insertElementAt(pathElement, 0);
       }
       // Now use path elements to do top-down search for corresponding tree node
       DefaultTreeModel treeModel = (DefaultTreeModel)sourceTree.getModel(); 
       DefaultMutableTreeNode pathNode = (DefaultMutableTreeNode)treeModel.getRoot(); 
       for(int i = 0; i < pathElements.size(); i++) {
           pathElement = (File)pathElements.get(i);
           for(int j = 0; j < pathNode.getChildCount(); j++) {
               DefaultMutableTreeNode node = (DefaultMutableTreeNode)pathNode.getChildAt(j);
               if (node.getUserObject().equals(pathElement)) {
                   pathNode = node;
                   break;
               }
           }
       }       
       sourceTree.setSelectionPath(new TreePath(pathNode.getPath()));
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        java.awt.GridBagConstraints gridBagConstraints;

        jScrollPane1 = new javax.swing.JScrollPane();
        sourceTree = new javax.swing.JTree();
        jScrollPane2 = new javax.swing.JScrollPane();
        oldEditorPane = new org.jdesktop.swingx.JXEditorPane();
        jSplitPane1 = new javax.swing.JSplitPane();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jSeparator1 = new javax.swing.JSeparator();
        closeWindowMI = new javax.swing.JMenuItem();

        jScrollPane1.setBorder(null);
        sourceTree.setModel(createTreeModel());
        sourceTree.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
            public void valueChanged(javax.swing.event.TreeSelectionEvent evt) {
                sourceTreeValueChanged(evt);
            }
        });

        jScrollPane1.setViewportView(sourceTree);

        jScrollPane2.setBorder(null);
        oldEditorPane.setEditable(false);
        jScrollPane2.setViewportView(oldEditorPane);

        getContentPane().setLayout(new java.awt.GridBagLayout());

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jSplitPane1.setBorder(null);
        jSplitPane1.setDividerLocation(150);
        JXTitledPanel tp = new JXTitledPanel("Sources");
        tp.setContentContainer(jScrollPane1);
        jSplitPane1.setLeftComponent(tp);
        tp = new JXTitledPanel("Editor");
        tp.setContentContainer(jScrollPane2);
        jSplitPane1.setRightComponent(tp);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 11, 11);
        getContentPane().add(jSplitPane1, gridBagConstraints);

        jMenu1.setText("Menu");
        jMenuItem1.setText("Print");
        jMenu1.add(jMenuItem1);

        jMenu1.add(jSeparator1);

        closeWindowMI.setText("Close Window");
        closeWindowMI.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                closeWindowMIActionPerformed(evt);
            }
        });

        jMenu1.add(closeWindowMI);

        jMenuBar1.add(jMenu1);

        setJMenuBar(jMenuBar1);

        pack();
    }
    // </editor-fold>//GEN-END:initComponents

    private void sourceTreeValueChanged(javax.swing.event.TreeSelectionEvent evt) {//GEN-FIRST:event_sourceTreeValueChanged
        //get the selected node and if it is a file, open it in the source editor
        TreePath path = sourceTree.getSelectionPath();
        TreeNode node = (TreeNode)path.getLastPathComponent();
        if (node instanceof FileTreeNode) {
            File f = (File)((FileTreeNode)node).getUserObject();
            if (f.isFile()) {
                //read the contents of the file into a String
                try {
//                    StringBuilder buffer = new StringBuilder();
//                    byte[] bytes = new byte[1024];
//                    int length = -1;
//                    InputStream is = new FileInputStream(f);
//                    while ((length = is.read(bytes)) != -1) {
//                        buffer.append(new String(bytes, 0, length));
//                    }
//                    oldEditorPane.setEditorKit(new RTFEditorKit());
//                    oldEditorPane.setText(buffer.toString());
                    oldEditorPane.setPage(f.toURL());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }//GEN-LAST:event_sourceTreeValueChanged

    private void closeWindowMIActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_closeWindowMIActionPerformed
        setVisible(false);
    }//GEN-LAST:event_closeWindowMIActionPerformed
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JMenuItem closeWindowMI;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JSplitPane jSplitPane1;
    private javax.swing.JEditorPane oldEditorPane;
    private javax.swing.JTree sourceTree;
    // End of variables declaration//GEN-END:variables

    private TreeModel createTreeModel() {
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("Sources");
        createDirectory(root, rootDir);
        return new DefaultTreeModel(root);
    }
    
    private void createDirectory(DefaultMutableTreeNode dirNode, File rootDir) {
        if (rootDir != null && dirNode != null) {
            for (File f : rootDir.listFiles()) {
                if (f.isDirectory()) {
                    DefaultMutableTreeNode dir = new FileTreeNode(f);
                    dirNode.add(dir);
                    createDirectory(dir, f);
                } else if (f.isFile()) {
                    DefaultMutableTreeNode file = new FileTreeNode(f);
                    dirNode.add(file);
                }
            }
        }
    }
    
    private static final class FileTreeNode extends DefaultMutableTreeNode {
        public FileTreeNode(File f) {
            super(f);
        }
        
        public String toString() {
            File f = (File)getUserObject();
            if (f.isDirectory()) {
                return ((File)getUserObject()).getName() + "/";
            } else {
                return ((File)getUserObject()).getName();
            }
        }
    }
    
}