CommandAssistPanel.java

package jeql.workbench.ui.assist;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;

import javax.swing.DefaultListModel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.border.EmptyBorder;

import jeql.engine.CommandInvoker;
import jeql.engine.CommandRegistry;
import jeql.engine.EngineContext;
import jeql.man.CommandParamMethod;
import jeql.man.CommandUtil;
import jeql.man.ManUtil;
import jeql.workbench.Workbench;

public class CommandAssistPanel extends JPanel
{  
  public static CodeSnippet getCodeSnip(JList list)
  {
    return (CodeSnippet) list.getSelectedValue();
  }
  
  private DefaultListModel cmdListModel = new DefaultListModel();
  private JList cmdList = new JList(cmdListModel);
  private DefaultListModel paramListModel = new DefaultListModel();
  private JList paramList = new JList(paramListModel);
  private CodeAssistPanel codeAssistPanel;

  public CommandAssistPanel(CodeAssistPanel codeAssistPanel)
  {
    this.codeAssistPanel = codeAssistPanel;    try {
      initUI();
      populateCmdList();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  private void initUI() throws Exception
  {
    //setSize(100, 250);
    cmdList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    cmdList.setSelectionBackground(Color.GRAY);
    cmdList.setSize(100, 250);
    cmdList.setBorder(new EmptyBorder(2, 2, 2, 2));

    cmdList.addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        populateParamList();
        CodeSnippet snip = getCodeSnip(cmdList);
        codeAssistPanel.showDoc(snip.getDoc());
        if (e.getClickCount() == 2) {
          Workbench.controller().insertCodeSnippet(snip);
        }
      }
    });
    
    JScrollPane cmdScrollPane1 = new JScrollPane();
    cmdScrollPane1.getViewport().add(cmdList, null);
    
    //---------  Function list
    
    paramList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    paramList.setSelectionBackground(Color.GRAY);
    paramList.setSize(100, 250);
    paramList.setBorder(new EmptyBorder(2, 2, 2, 2));

    paramList.addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        CodeSnippet snip = getCodeSnip(paramList);
        codeAssistPanel.showDoc(snip.getDoc());
        if (e.getClickCount() == 2) {
          Workbench.controller().insertCodeSnippet(getCodeSnip(paramList));
        }
      }
    });
    
    JScrollPane paramScrollPane = new JScrollPane();
    paramScrollPane.getViewport().add(paramList, null);

    setLayout(new GridLayout(1,2));
    setPreferredSize(new Dimension(150, 250));
    add(cmdScrollPane1);
    add(paramScrollPane);

  }
  

  
  public void populateCmdList()
  {
    cmdListModel.clear();
    
    CommandRegistry reg = EngineContext.getInstance().geCommandRegistry();
    for (CommandInvoker ci : reg.getCommands() ) {
      cmdListModel.addElement(CodeSnippet.code2(
          ci.getName(), 
          ci.getDescription(),
          ci.getName() + " ", ";"));
    }
  }


  private void populateParamList()
  {
    String moduleName = cmdList.getSelectedValue().toString();
    populateParamList(moduleName);
  }
  
  private void populateParamList(String cmdName)
  {
    paramListModel.clear();

    Map<String, CommandParamMethod> params = EngineContext.getInstance().geCommandRegistry().getCommand(cmdName).getParameters();
    
    // output default first
    if (params.containsKey(CommandInvoker.DEFAULT_METHOD_NAME)) {
      //System.out.println(PARAM_INDENT + params.get(CommandInvoker.DEFAULT_METHOD_NAME));
      CommandParamMethod param = params.get(CommandInvoker.DEFAULT_METHOD_NAME);
      String name = null;
      paramListModel.addElement(CodeSnippet.code(
          param.toStringSpec(), 
          param.getDoc(),
          name));
      /*
      writer.writeCommandParam(param.getIOTag(), param.getDisplayName(), 
          param.getArgTypeList(), param.getDescription());
          */
    }
    for (String paramName : params.keySet() ) {
      if (paramName.equals(CommandInvoker.DEFAULT_METHOD_NAME))
        continue;
      CommandParamMethod param = params.get(paramName);
      String name = param.getDisplayName() + ": ";
      paramListModel.addElement(CodeSnippet.code(
          param.toStringSpec(), 
          param.getDoc(),
          name ));

      /*
      writer.writeCommandParam(param.getIOTag(), param.getDisplayName(), 
          param.getArgTypeList(), param.getDescription());
          */  
    }

  }
}