/*
 * MethodsPropPane.java
 *
 * Created on September 30, 2001, 4:10 PM
 *
 * Modification Log:
 * 1.00 30th Sep 2001 Tanmay Original version.
 * 1.01 30th Jan 2002 Tanmay Moved out toggle modify button to main screen.
 * 1.02 02nd Feb 2002 Tanmay Moved over to new attributes dialog.
 * 1.03 23rd Mar 2002 Tanmay Corrected search behavior where all searches after
 * a failed search also failed till the table 
 * selection was changed manually.
 *-----------------------------------------------------------------------------------------
 * 10th Sep 2003 Tanmay Moved to SourceForge (http://classeditor.sourceforge.net)
 *-----------------------------------------------------------------------------------------
 */

package gui;

import classfile.ClassFile;
import classfile.MethodInfo;
import classfile.AccessFlags;
import classfile.attributes.Attributes;
import classfile.ConstantPoolInfo;
import classfile.Utils;
import gui.attributes.*;
import guihelper.*;

import java.awt.Component;
import javax.swing.*;
import javax.swing.table.TableColumn;

/**
 * Copyright (C) 2002-2003 Tanmay K. Mohapatra
 * <br>
 *
 * @author 	Tanmay K. Mohapatra
 * @version 1.03, 23rd March, 2002
 */
public class MethodsPropPane extends javax.swing.JPanel {
 
 private ClassFile currClassFile;
 private int iPrevMethod;
 private boolean bEditable;
 
 /** Creates new form MethodsPropPane */
 public MethodsPropPane() {
 initComponents();
 }

 public void setModifyMode(boolean bEditableIn) {
 bEditable = bEditableIn;
 MethodTableModel thisModel = (MethodTableModel)tblMethodNames.getModel();
 thisModel.setEditable(bEditable);
 btnAddMethod.setEnabled(bEditable);
 btnRemoveMethod.setEnabled(bEditable);
 }

 void clear() {
 tblMethodNames.setModel(new MethodTableModel(null));
 lblNumMethodAttribs.setText("");
 }
 
 void refresh() {
 clear();
 if(null == currClassFile) return;
 
 TableColumn thisCol;
 MethodTableModel thisModel = new MethodTableModel(currClassFile);
 thisModel.setEditable(bEditable);
 tblMethodNames.setModel(thisModel);
 thisModel.setCellEditors(tblMethodNames);

 thisCol = tblMethodNames.getColumnModel().getColumn(0);
 thisCol.setPreferredWidth(30);
 thisCol.setMaxWidth(80);
 
 thisCol = tblMethodNames.getColumnModel().getColumn(1);
 thisCol.setPreferredWidth(200);
 thisCol.setMaxWidth(400);

 thisCol = tblMethodNames.getColumnModel().getColumn(2);
 thisCol.setPreferredWidth(300);
 thisCol.setMaxWidth(400);

 thisCol = tblMethodNames.getColumnModel().getColumn(3);
 thisCol.setPreferredWidth(300);
 thisCol.setMaxWidth(600);
 
 tblMethodNames.changeSelection(0, 1, false, false);
 }
 
 void setClassFile(ClassFile classFile) {
 currClassFile = classFile;
 }
 
 private void searchMethod() {
 if (null == currClassFile) return;
 String sSrchStr = txtMethodSearch.getText().trim();
 if (sSrchStr.length() <= 0) return;
 if(-1 == iPrevMethod) return;

 MethodTableModel tblModel = (MethodTableModel)tblMethodNames.getModel();
 int iPrevMethodNew = tblModel.nextIndex(iPrevMethod+1, sSrchStr);
 if(iPrevMethodNew >= 0) {
 iPrevMethod = iPrevMethodNew;
 tblMethodNames.changeSelection(iPrevMethod, 1, false, 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();
 tblMethodNames = new javax.swing.JTable();
 tblMethodNames.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 ListSelectionModel tblSM = tblMethodNames.getSelectionModel();
 tblSM.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
 public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
 tblMethodNamesValueChanged(evt);
 }
 });
 jPanel3 = new javax.swing.JPanel();
 jTextArea1 = new javax.swing.JTextArea();
 txtMethodSearch = new javax.swing.JTextField();
 btnMethodSearch = new javax.swing.JButton();
 panelAttribs = new javax.swing.JPanel();
 jLabel5 = new javax.swing.JLabel();
 lblNumMethodAttribs = new javax.swing.JLabel();
 btnShowMethodAttribs = new javax.swing.JButton();
 panelEdit = new javax.swing.JPanel();
 btnAddMethod = new javax.swing.JButton();
 btnRemoveMethod = new javax.swing.JButton();

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

 tblMethodNames.setModel(new MethodTableModel(null));
 tblMethodNames.setShowHorizontalLines(false);
 jScrollPane1.setViewportView(tblMethodNames);

 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;
 add(jScrollPane1, gridBagConstraints);

 jPanel3.setLayout(new java.awt.GridBagLayout());

 jPanel3.setBorder(new javax.swing.border.TitledBorder("Search"));
 jTextArea1.setEditable(false);
 jTextArea1.setText("Enter search string below and press Find \nto search from the current position");
 jTextArea1.setBackground(new java.awt.Color(204, 204, 255));
 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 jPanel3.add(jTextArea1, gridBagConstraints);

 txtMethodSearch.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 txtMethodSearchActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 jPanel3.add(txtMethodSearch, gridBagConstraints);

 btnMethodSearch.setText("Find/Find Next");
 btnMethodSearch.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnMethodSearchActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.EAST;
 jPanel3.add(btnMethodSearch, gridBagConstraints);

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 gridBagConstraints.weightx = 1.0;
 add(jPanel3, gridBagConstraints);

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

 panelAttribs.setBorder(new javax.swing.border.TitledBorder("Method Attributes"));
 jLabel5.setText("Number of Attributes");
 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
 panelAttribs.add(jLabel5, gridBagConstraints);

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
 panelAttribs.add(lblNumMethodAttribs, gridBagConstraints);

 btnShowMethodAttribs.setText("Show/Edit");
 btnShowMethodAttribs.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnShowMethodAttribsActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 gridBagConstraints.anchor = java.awt.GridBagConstraints.EAST;
 panelAttribs.add(btnShowMethodAttribs, gridBagConstraints);

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 gridBagConstraints.weightx = 0.5;
 add(panelAttribs, gridBagConstraints);

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

 panelEdit.setBorder(new javax.swing.border.TitledBorder("Edit"));
 btnAddMethod.setText("Add New");
 btnAddMethod.setEnabled(false);
 btnAddMethod.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnAddMethodActionPerformed(evt);
 }
 });

 panelEdit.add(btnAddMethod, new java.awt.GridBagConstraints());

 btnRemoveMethod.setText("Delete");
 btnRemoveMethod.setEnabled(false);
 btnRemoveMethod.addActionListener(new java.awt.event.ActionListener() {
 public void actionPerformed(java.awt.event.ActionEvent evt) {
 btnRemoveMethodActionPerformed(evt);
 }
 });

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
 panelEdit.add(btnRemoveMethod, gridBagConstraints);

 gridBagConstraints = new java.awt.GridBagConstraints();
 gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
 gridBagConstraints.weightx = 0.5;
 add(panelEdit, gridBagConstraints);

 }//GEN-END:initComponents

 private void btnShowMethodAttribsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnShowMethodAttribsActionPerformed
 if (null == currClassFile) return;
 if(-1 == iPrevMethod) return;
 MethodInfo currMethod = currClassFile.methods.getMethod(iPrevMethod);
 if(null == currMethod) return;
 Attributes methodAttribs = currMethod.attributes;
 if (null == methodAttribs) return;
 
 AttributesDialog attribsDial = new AttributesDialog(AttributeTreeNode.getFrameFrom(this), true);
 attribsDial.setTitle("Method Attributes");
 attribsDial.setInput(methodAttribs, currClassFile.constantPool, bEditable);
 attribsDial.show();
 }//GEN-LAST:event_btnShowMethodAttribsActionPerformed
 
 private void btnRemoveMethodActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnRemoveMethodActionPerformed
 if (-1 != iPrevMethod) {
 // delete the prev fld
 MethodInfo thisMethod = currClassFile.methods.getMethod(iPrevMethod);
 String [] aParams = thisMethod.getMethodDesc();
 String sMethodStr = thisMethod.accessFlags.toString() + " " +
 aParams[0] + " " +
 thisMethod.getMethodName() + " (";
 for(int iParamIndex=1; iParamIndex < aParams.length; iParamIndex++) {
 sMethodStr += aParams[iParamIndex];
 if ((iParamIndex+1) < aParams.length) sMethodStr += ",";
 }
 sMethodStr += ")";
 
 int iConfirm = JOptionPane.showConfirmDialog(null,
 "Are you sure you want to delete the method\n" + sMethodStr + "?",
 "Confirm Delete", JOptionPane.YES_NO_OPTION);
 if(JOptionPane.YES_OPTION == iConfirm) {
 currClassFile.methods.deleteMethod(iPrevMethod);
 refresh();
 }
 }
 }//GEN-LAST:event_btnRemoveMethodActionPerformed
 
 private void btnAddMethodActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnAddMethodActionPerformed
 if (null == currClassFile) return;
 
 ((MethodTableModel)tblMethodNames.getModel()).addNewMethod();
 refresh();
 tblMethodNames.changeSelection(tblMethodNames.getModel().getRowCount()-1, 1, false, false);
 }//GEN-LAST:event_btnAddMethodActionPerformed
 
 private void tblMethodNamesValueChanged(javax.swing.event.ListSelectionEvent evt) {
 if(evt.getValueIsAdjusting()) return;
 if((null == currClassFile) || (null == currClassFile.methods) || 
 (currClassFile.methods.getMethodsCount() == 0)) {
 iPrevMethod = -1;
 return;
 }
 int iSelectedRow = tblMethodNames.getSelectedRow();
 if(0 > iSelectedRow) {
 iPrevMethod = -1;
 return;
 }
 
 iPrevMethod = iSelectedRow;
 MethodInfo thisMethod = currClassFile.methods.getMethod(iSelectedRow);
 lblNumMethodAttribs.setText(Integer.toString((null != thisMethod.attributes) ? thisMethod.attributes.getAttribCount() : 0));
 }
 
 private void txtMethodSearchActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_txtMethodSearchActionPerformed
 searchMethod();
 }//GEN-LAST:event_txtMethodSearchActionPerformed
 
 private void btnMethodSearchActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnMethodSearchActionPerformed
 searchMethod();
 }//GEN-LAST:event_btnMethodSearchActionPerformed
 
 // Variables declaration - do not modify//GEN-BEGIN:variables
 private javax.swing.JButton btnAddMethod;
 private javax.swing.JButton btnMethodSearch;
 private javax.swing.JButton btnRemoveMethod;
 private javax.swing.JButton btnShowMethodAttribs;
 private javax.swing.JLabel jLabel5;
 private javax.swing.JPanel jPanel3;
 private javax.swing.JScrollPane jScrollPane1;
 private javax.swing.JTextArea jTextArea1;
 private javax.swing.JLabel lblNumMethodAttribs;
 private javax.swing.JPanel panelAttribs;
 private javax.swing.JPanel panelEdit;
 private javax.swing.JTable tblMethodNames;
 private javax.swing.JTextField txtMethodSearch;
 // End of variables declaration//GEN-END:variables
 
}