/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2004 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
package org.netbeans.modules.refactoring.ui;

import java.awt.BorderLayout;
import java.util.*;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.border.EmptyBorder;
import org.netbeans.modules.refactoring.api.AbstractRefactoring;
import org.netbeans.modules.refactoring.api.MoveClassRefactoring;
import org.netbeans.modules.refactoring.api.Problem;
import org.netbeans.modules.refactoring.api.ui.ParametersPanel;
import org.netbeans.modules.refactoring.api.ui.RefactoringUI;
import org.netbeans.jmi.javamodel.Resource;
import org.netbeans.modules.java.JavaDataObject;
import org.netbeans.modules.javacore.internalapi.JavaMetamodel;
import org.netbeans.modules.refactoring.ui.MoveClassUI;
import org.openide.explorer.view.NodeRenderer;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.loaders.DataObject;
import org.openide.util.HelpCtx;
import org.openide.util.NbBundle;
import org.openide.awt.Mnemonics;

/**
 * @author Jan Becicka
 */
public class MoveClassesUI implements RefactoringUI {
    
    private List resources;
    private Set javaObjects;
    private MovePanel panel;
    private MoveClassRefactoring refactoring;
    private String targetPkgName = "";
    private boolean disable;
    
    static final String getString(String key) {
        return NbBundle.getMessage(MoveClassUI.class, key);
    }
    
    public MoveClassesUI(Set javaObjects) {
        this(javaObjects, false);
    }

    public MoveClassesUI(Set javaObjects, boolean disable) {
        this.disable = disable;
        this.javaObjects=javaObjects;
        JavaMetamodel model = JavaMetamodel.getManager();
        resources = new ArrayList(javaObjects.size());
        for (Iterator i=javaObjects.iterator(); i.hasNext();) {
            resources.add(model.getResource(((JavaDataObject) i.next()).getPrimaryFile()));
        }
    }
    
    public String getName() {
        return getString ("LBL_MoveClasses");
    }
     
    public String getDescription() {
        return getName();
    }
    
    public boolean isQuery() {
        return false;
    }
        
    public JPanel getPanel(ParametersPanel parent) {
        if (panel == null) {
            panel = new MovePanel (parent, getString(disable ? "LBL_RefactorClassesAfterMove" : "LBL_MoveClasses"),
                disable ? getString("LBL_RefactorClassesNeeded") : getString("LBL_MoveClassesHeadline"),
                getResPackageName((Resource) resources.get(0))
            );
        }
        return panel;
    }
    
    private static String getResPackageName(Resource res) {
        String name = res.getName();
        if ( name.indexOf('/') == -1 )
            return "";
        return name.substring(0, name.lastIndexOf('/')).replace('/','.');
    }

    private String packageName () {
        return targetPkgName.trim().length() == 0 ? getString ("LBL_DefaultPackage") : targetPkgName.trim ();
    }
    
    private Problem setParameters(boolean checkOnly) {
        if (panel==null) 
            return null;
        targetPkgName = panel.getPackageName ();
        FileObject folder = checkOnly?null:FileUtil.toFileObject(panel.getFolder());
        if (folder == null) { 
            folder = refactoring.classPath.findResource(targetPkgName.replace('.','/'));
            if (folder == null) {
                    return new Problem (true, getString("ERR_UnknownPackage"));
            }
        } 

        if (checkOnly) {
            return refactoring.checkParameters(folder);
        } else {
            return refactoring.setParameters(disable?null:folder);
        }
    }
    
    public Problem checkParameters() {
        return setParameters(true);
    }
    
    public Problem setParameters() {
        return setParameters(false);
    }
    
    public AbstractRefactoring getRefactoring() {
        if (refactoring == null) {                        
            refactoring = new MoveClassRefactoring (resources, false, disable);
        }
        return refactoring;
    }

    private final Vector getNodes() {
        Vector result = new Vector(javaObjects.size());
        for(Iterator i = javaObjects.iterator(); i.hasNext();) {
            result.add(((DataObject) i.next()).getNodeDelegate());
        }
        return result;
    }
 
    public boolean hasParameters() {
        return true;
    }
    
    public HelpCtx getHelpCtx() {
        return new HelpCtx(MoveClassesUI.class);
    }
    
    // MovePanel ...............................................................
    class MovePanel extends MoveClassPanel {
        public MovePanel (final ParametersPanel parent, String title, String headline, String startPackage) {
            super(parent, title, headline, startPackage, ((JavaDataObject) javaObjects.iterator().next()).getPrimaryFile() );
            setCombosEnabled(!disable);
            JList list = new JList(getNodes());
            list.setCellRenderer(new NodeRenderer());
            JScrollPane pane = new JScrollPane(list);
            bottomPanel.setBorder(new EmptyBorder(8,0,0,0));
            bottomPanel.setLayout(new BorderLayout());
            bottomPanel.add(pane, BorderLayout.CENTER);
            JLabel listOf = new JLabel();
            Mnemonics.setLocalizedText(listOf, NbBundle.getMessage(MoveClassesUI.class, "LBL_ListOfClasses"));
            bottomPanel.add(listOf, BorderLayout.NORTH);
        }
    }
}