/*
 * RelatedClasses.java
 *
 * Created on June 9, 1999, 11:56 PM
 *
 * Modification Log:
 * 1.00 09th Jun 1999 Tanmay Original Version
 * 2.00 16th Dec 2001 Tanmay Moved over to Java Swing.
 *-----------------------------------------------------------------------------------------
 * 10th Sep 2003 Tanmay Moved to SourceForge (http://classeditor.sourceforge.net)
 *-----------------------------------------------------------------------------------------
 */

package gui;

import classfile.*;
import guihelper.JavaFileFilter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.swing.*;

/**
 * Dialog to show classes referred from this class file.
 * <br><br>
 *
 * @author 	Tanmay K. Mohapatra
 * @version 2.00, 16th December, 2001
 */
public class RelatedClasses extends javax.swing.JDialog {
 
 String[] asClassList;
 String[] asDisplayList;
 ClassEditor ce;
 boolean bPopulating;
 
 /** Creates new form RelatedClasses */
 public RelatedClasses(java.awt.Frame parent, boolean modal) {
 super(parent, modal);
 initComponents();
 }

 
 public void applyFilter(String sFilter) {
 if(bPopulating) return;
 
 int iIndex, iDisplayIndex, iNumDisplay;
 DefaultListModel dlm = (DefaultListModel)lstRelatedClasses.getModel();
 dlm.removeAllElements();
 
 if ( (null == sFilter) || (sFilter.length() == 0) || (null == asClassList) ) {
 if(null != asClassList) {
 for(iIndex=0; iIndex < asClassList.length; iIndex++) {
 dlm.addElement(asClassList[iIndex]);
 }
 }
 lstRelatedClasses.setModel(dlm);
 return;
 }
 iNumDisplay = 0;
 for (iIndex=0; iIndex < asClassList.length; iIndex++) {
 if (asClassList[iIndex].startsWith(sFilter)) {
 iNumDisplay++;
 }
 }
 asDisplayList = null;
 if (iNumDisplay > 0) {
 asDisplayList = new String[iNumDisplay];
 for (iIndex=iDisplayIndex=0; iIndex < asClassList.length; iIndex++) {
 if (asClassList[iIndex].startsWith(sFilter)) {
 asDisplayList[iDisplayIndex++] = asClassList[iIndex];
 dlm.addElement(asClassList[iIndex]);
 }
 }
 }
 lstRelatedClasses.setModel(dlm);
 }
 
 private void addFilterString(String sFilter) {
 DefaultComboBoxModel dcm = (DefaultComboBoxModel)cmbFilter.getModel();
 int iNumStrs = dcm.getSize();
 if (0 == iNumStrs) {
 dcm.addElement(sFilter);
 return;
 }
 for (int iIndex=iNumStrs-1; iIndex >= 0; iIndex--) {
 String sThisItem = (String)dcm.getElementAt(iIndex);
 if (sFilter.equals(sThisItem)) {
 return;
 }
 }
 dcm.addElement(sFilter);
 cmbFilter.setModel(dcm);
 }
 
 void showRelatedClasses(ClassEditor parent, ConstantPool constPool) {
 int iIndex, iNumClasses, iMaxPoolCount;
 DefaultComboBoxModel dcm = new DefaultComboBoxModel();
 DefaultListModel dlm = new DefaultListModel();
 
 bPopulating = true;
 ce = parent;
 lstRelatedClasses.setModel(dlm);
 cmbFilter.setModel(dcm);
 
 iMaxPoolCount = constPool.getPoolInfoCount();
 for (iIndex=iNumClasses=0; iIndex < iMaxPoolCount; iIndex++) {
 ConstantPoolInfo newInfo = constPool.getPoolInfo(iIndex+1);
 if (newInfo.iTag == ConstantPoolInfo.CONSTANT_Class) {
 newInfo = constPool.getPoolInfo(newInfo.iNameIndex);
 iNumClasses++;
 dlm.addElement(Utils.convertClassStrToStr(newInfo.sUTFStr));
 }
 if (newInfo.isDoubleSizeConst()) {
 iIndex++;
 }
 }
 lstRelatedClasses.setModel(dlm);
 if (iNumClasses > 0) {
 addFilterString("");
 asClassList = new String[iNumClasses];
 asDisplayList = new String[iNumClasses];
 for (iIndex=0; iIndex<iNumClasses; iIndex++) {
 asDisplayList[iIndex] = asClassList[iIndex] = (String)dlm.getElementAt(iIndex);
 int iLastDot = asDisplayList[iIndex].lastIndexOf(".");
 if (iLastDot > 0) {
 String sFilter = asDisplayList[iIndex].substring(0, iLastDot);
 addFilterString(sFilter);
 }
 }
 }
 bPopulating = false;
 }
 
 /** 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.
 */
 private void initComponents() {//GEN-BEGIN:initComponents
 java.awt.GridBagConstraints gridBagConstraints;

 jScrollPane1 = new javax.swing.JScrollPane();
 lstRelatedClasses = new javax.swing.JList();
 jLabel1 = new javax.swing.JLabel();
 cmbFilter = new javax.swing.JComboBox();
 jLabel2 = new javax.swing.JLabel();
 txtFilePath = new javax.swing.JTextField();
 btnBrowse = new javax.swing.JButton();
 btnOpenClass = new javax.swing.JButton();
 btnClose = new javax.swing.JButton();

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

 setModal(true);
 addWindowListener(new java.awt.event.WindowAdapter() {
 public void windowClosing(java.awt.event.WindowEvent evt) {
 closeDialog(evt);
 }
 });

 jScrollPane1.setViewportView(lstRelatedClasses);

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 gridBagConstraints.weightx = 1.0;
 gridBagConstraints.weighty = 1.0;
 getContentPane().add(jScrollPane1, gridBagConstraints);

 jLabel1.setText("Filter");
 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(jLabel1, gridBagConstraints);

 cmbFilter.addItemListener(new java.awt.event.ItemListener() {
 public void itemStateChanged(java.awt.event.ItemEvent evt) {
 cmbFilterItemStateChanged(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(cmbFilter, gridBagConstraints);

 jLabel2.setText("Path");
 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(jLabel2, gridBagConstraints);

 txtFilePath.setColumns(20);
 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.weightx = 1.0;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(txtFilePath, gridBagConstraints);

 btnBrowse.setText("Browse");
 btnBrowse.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnBrowseActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(btnBrowse, gridBagConstraints);

 btnOpenClass.setText("Open Class");
 btnOpenClass.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnOpenClassActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.EAST;
 gridBagConstraints.insets = new java.awt.Insets(0, 4, 0, 0);
 getContentPane().add(btnOpenClass, gridBagConstraints);

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

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 getContentPane().add(btnClose, gridBagConstraints);

 pack();
 }//GEN-END:initComponents
 
 private void btnOpenClassActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnOpenClassActionPerformed
 String sNewFile = txtFilePath.getText();
 if (sNewFile.length() > 0) {
 try {
 ce.chkNLoadClass(sNewFile);
 closeDialog(null);
 }
 catch(FileNotFoundException fnfe) {
 JOptionPane.showMessageDialog(this, "File not found:\n" + sNewFile, "File open failed", JOptionPane.ERROR_MESSAGE);
 }
 catch(IOException ioe) {
 JOptionPane.showMessageDialog(this, "Error reading file:\n" + sNewFile, "File read failed", JOptionPane.ERROR_MESSAGE);
 }
 }
 }//GEN-LAST:event_btnOpenClassActionPerformed
 
 private void btnBrowseActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnBrowseActionPerformed
 String sFileName;
 javax.swing.JFileChooser newFileChooser = new javax.swing.JFileChooser();
 newFileChooser.addChoosableFileFilter(new JavaFileFilter("class", "Class Files"));
 int returnVal = newFileChooser.showOpenDialog(this);
 
 if(returnVal != javax.swing.JFileChooser.APPROVE_OPTION) {
 return;
 }
 sFileName = newFileChooser.getSelectedFile().getAbsolutePath();
 txtFilePath.setText(sFileName);
 }//GEN-LAST:event_btnBrowseActionPerformed
 
 private void cmbFilterItemStateChanged(java.awt.event.ItemEvent evt) {//GEN-FIRST:event_cmbFilterItemStateChanged
 applyFilter((String)cmbFilter.getModel().getElementAt(cmbFilter.getSelectedIndex()));
 }//GEN-LAST:event_cmbFilterItemStateChanged
 
 private void btnCloseActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCloseActionPerformed
 closeDialog(null);
 }//GEN-LAST:event_btnCloseActionPerformed
 
 /** Closes the dialog */
 private void closeDialog(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_closeDialog
 setVisible(false);
 dispose();
 }//GEN-LAST:event_closeDialog
 
 
 // Variables declaration - do not modify//GEN-BEGIN:variables
 private javax.swing.JButton btnBrowse;
 private javax.swing.JButton btnClose;
 private javax.swing.JButton btnOpenClass;
 private javax.swing.JComboBox cmbFilter;
 private javax.swing.JLabel jLabel1;
 private javax.swing.JLabel jLabel2;
 private javax.swing.JScrollPane jScrollPane1;
 private javax.swing.JList lstRelatedClasses;
 private javax.swing.JTextField txtFilePath;
 // End of variables declaration//GEN-END:variables
 
}