/*
 *                 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.form.palette;

import javax.swing.*;
import java.awt.event.*;
import java.lang.ref.WeakReference;
import javax.swing.text.DefaultEditorKit;
import java.beans.*;

import org.openide.util.*;
import org.openide.explorer.*;
import org.openide.explorer.view.BeanTreeView;
import org.openide.*;
import org.openide.nodes.*;

import org.netbeans.modules.form.project.ClassSource;

/**
 * This class provides the UI for managing palette conent (adding components
 * etc). Shown to the user as "Palette Manager" window.
 *
 * @author Tomas Pavek
 */

public class PaletteManager extends JPanel implements ExplorerManager.Provider,
                                                      Lookup.Provider
{
    private static WeakReference dialogRef; // is weak reference necessary?

    private ExplorerManager explorerManager;
    private Lookup lookup;

    // ------------

    public static void showPaletteManager() {
        java.awt.Dialog dialog = null;
        if (dialogRef != null)
            dialog = (JDialog) dialogRef.get();
        if (dialog == null) {
            JButton closeButton = new JButton();
            org.openide.awt.Mnemonics.setLocalizedText(
                closeButton, PaletteUtils.getBundleString("CTL_Close_Button")); // NOI18N
            DialogDescriptor dd = new DialogDescriptor(
                new PaletteManager(),
                PaletteUtils.getBundleString("CTL_PaletteManager_Title"), // NOI18N
                false,
                new Object[] { closeButton },
                closeButton,
                DialogDescriptor.DEFAULT_ALIGN,
                null,
                null);
            dialog = DialogDisplayer.getDefault().createDialog(dd);
            dialogRef = new WeakReference(dialog);
        }
        dialog.setVisible(true);
    }

    /** Creates new PaletteManager */
    public PaletteManager() {
        explorerManager = new ExplorerManager();

        ActionMap map = getActionMap();
        map.put(DefaultEditorKit.copyAction, ExplorerUtils.actionCopy(explorerManager));
        map.put(DefaultEditorKit.cutAction, ExplorerUtils.actionCut(explorerManager));
        map.put(DefaultEditorKit.pasteAction, ExplorerUtils.actionPaste(explorerManager));
        map.put("delete", ExplorerUtils.actionDelete(explorerManager, true)); // NOI18N

        lookup = ExplorerUtils.createLookup(explorerManager, map);

        explorerManager.setRootContext(PaletteNode.getPaletteNode());

        initComponents();

        BeanTreeView treeView = new BeanTreeView();
//        treeView.getAccessibleContext().setAccessibleName(
//            PaletteUtils.getBundleString("???")); // NOI18N
//        treeView.getAccessibleContext().setAccessibleDescription(
//            PaletteUtils.getBundleString("???")); // NOI18N
        treePanel.add(treeView, java.awt.BorderLayout.CENTER);
        captionLabel.setLabelFor(treeView);

        explorerManager.addPropertyChangeListener(new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent ev) {
                if (ExplorerManager.PROP_SELECTED_NODES.equals(ev.getPropertyName()))
                    updateInfoLabel(explorerManager.getSelectedNodes());
            }
        });
    }

    public void addNotify() {
        super.addNotify();
        ExplorerUtils.activateActions(explorerManager, true);
    }

    public void removeNotify() {
        ExplorerUtils.activateActions(explorerManager, false);
        super.removeNotify();
    }

    // ExplorerManager.Provider
    public ExplorerManager getExplorerManager() {
        return explorerManager;
    }

    // Lookup.Provider from TopComponent
    public Lookup getLookup() {
        return lookup;
    }

    // -------

    /** 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;

        captionLabel = new javax.swing.JLabel();
        treePanel = new javax.swing.JPanel();
        infoLabel = new javax.swing.JLabel();
        addJarButton = new javax.swing.JButton();
        addLibraryButton = new javax.swing.JButton();
        addProjectButton = new javax.swing.JButton();
        moveUpButton = new javax.swing.JButton();
        moveDownButton = new javax.swing.JButton();
        removeButton = new javax.swing.JButton();
        newCategoryButton = new javax.swing.JButton();

        FormListener formListener = new FormListener();

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

        org.openide.awt.Mnemonics.setLocalizedText(captionLabel, PaletteUtils.getBundleString("CTL_Caption"));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.insets = new java.awt.Insets(6, 10, 0, 10);
        add(captionLabel, gridBagConstraints);

        treePanel.setLayout(new java.awt.BorderLayout());

        treePanel.setBorder(new javax.swing.border.EtchedBorder());
        treePanel.setPreferredSize(new java.awt.Dimension(288, 336));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.gridheight = 8;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(6, 10, 0, 0);
        add(treePanel, gridBagConstraints);

        infoLabel.setText(" ");
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 9;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(10, 10, 0, 10);
        add(infoLabel, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(addJarButton, PaletteUtils.getBundleString("CTL_AddJAR_Button"));
        addJarButton.setToolTipText(PaletteUtils.getBundleString("HINT_AddJAR"));
        addJarButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(6, 12, 0, 10);
        add(addJarButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(addLibraryButton, PaletteUtils.getBundleString("CTL_AddLibrary_Button"));
        addLibraryButton.setToolTipText(PaletteUtils.getBundleString("HINT_AddLibrary"));
        addLibraryButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 2;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 10);
        add(addLibraryButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(addProjectButton, PaletteUtils.getBundleString("CTL_AddProject_Button"));
        addProjectButton.setToolTipText(PaletteUtils.getBundleString("HINT_AddProject"));
        addProjectButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 3;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 10);
        add(addProjectButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(moveUpButton, PaletteUtils.getBundleString("CTL_MoveUp_Button"));
        moveUpButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 4;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(28, 12, 0, 10);
        add(moveUpButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(moveDownButton, PaletteUtils.getBundleString("CTL_MoveDown_Button"));
        moveDownButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 5;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 10);
        add(moveDownButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(removeButton, PaletteUtils.getBundleString("CTL_Remove_Button"));
        removeButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 6;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 10);
        add(removeButton, gridBagConstraints);

        org.openide.awt.Mnemonics.setLocalizedText(newCategoryButton, PaletteUtils.getBundleString("CTL_NewCategory_Button"));
        newCategoryButton.addActionListener(formListener);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 7;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 0, 10);
        add(newCategoryButton, gridBagConstraints);

    }

    // Code for dispatching events from components to event handlers.

    private class FormListener implements java.awt.event.ActionListener {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            if (evt.getSource() == addJarButton) {
                PaletteManager.this.addJarButtonActionPerformed(evt);
            }
            else if (evt.getSource() == addLibraryButton) {
                PaletteManager.this.addLibraryButtonActionPerformed(evt);
            }
            else if (evt.getSource() == addProjectButton) {
                PaletteManager.this.addProjectButtonActionPerformed(evt);
            }
            else if (evt.getSource() == moveUpButton) {
                PaletteManager.this.moveUpButtonActionPerformed(evt);
            }
            else if (evt.getSource() == moveDownButton) {
                PaletteManager.this.moveDownButtonActionPerformed(evt);
            }
            else if (evt.getSource() == removeButton) {
                PaletteManager.this.removeButtonActionPerformed(evt);
            }
            else if (evt.getSource() == newCategoryButton) {
                PaletteManager.this.newCategoryButtonActionPerformed(evt);
            }
        }
    }//GEN-END:initComponents

    private void removeButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_removeButtonActionPerformed
        Node[] selected = explorerManager.getSelectedNodes();
        if (selected.length == 0)
            return;

        // first user confirmation...
        NotifyDescriptor desc = new NotifyDescriptor.Confirmation(
            PaletteUtils.getBundleString("MSG_ConfirmPaletteDelete"), // NOI18N
            PaletteUtils.getBundleString("CTL_ConfirmDeleteTitle"), // NOI18N
            NotifyDescriptor.YES_NO_OPTION);

        if (NotifyDescriptor.YES_OPTION.equals(
                    DialogDisplayer.getDefault().notify(desc)))
        {
            try {
                for (int i=0; i < selected.length; i++)
                selected[i].destroy();
            }
            catch (java.io.IOException e) {
                ErrorManager.getDefault().notify(e);
            }
        }
    }//GEN-LAST:event_removeButtonActionPerformed

    private void moveDownButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_moveDownButtonActionPerformed
        moveNode(false);
    }//GEN-LAST:event_moveDownButtonActionPerformed

    private void moveUpButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_moveUpButtonActionPerformed
        moveNode(true);
    }//GEN-LAST:event_moveUpButtonActionPerformed

    private void newCategoryButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_newCategoryButtonActionPerformed
        try {
            PaletteNode.getPaletteNode().createNewCategory();
        }
        catch (java.io.IOException e) {
            ErrorManager.getDefault().notify(e);
        }
    }//GEN-LAST:event_newCategoryButtonActionPerformed

    private void addProjectButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_addProjectButtonActionPerformed
        BeanInstaller.installBeans(ClassSource.PROJECT_SOURCE);
    }//GEN-LAST:event_addProjectButtonActionPerformed

    private void addLibraryButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_addLibraryButtonActionPerformed
        BeanInstaller.installBeans(ClassSource.LIBRARY_SOURCE);
    }//GEN-LAST:event_addLibraryButtonActionPerformed

    private void addJarButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_addJarButtonActionPerformed
        BeanInstaller.installBeans(ClassSource.JAR_SOURCE);
    }//GEN-LAST:event_addJarButtonActionPerformed


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton addJarButton;
    private javax.swing.JButton addLibraryButton;
    private javax.swing.JButton addProjectButton;
    private javax.swing.JLabel captionLabel;
    private javax.swing.JLabel infoLabel;
    private javax.swing.JButton moveDownButton;
    private javax.swing.JButton moveUpButton;
    private javax.swing.JButton newCategoryButton;
    private javax.swing.JButton removeButton;
    private javax.swing.JPanel treePanel;
    // End of variables declaration//GEN-END:variables

    private void moveNode(boolean up) {
        final Node[] selected = explorerManager.getSelectedNodes();
        if (selected.length != 1)
            return;

        Node node = selected[0];
        Node parent = node.getParentNode();
        if (parent == null)
            return;

        Index indexCookie = (Index) parent.getCookie(Index.class);
        if (indexCookie == null)
            return;

        int index = movePossible(node, parent, up);
        if (index != -1) {
            if (up)
                indexCookie.moveUp(index);
            else 
                indexCookie.moveDown(index);
        }
    }

    private static int movePossible(Node node, Node parentNode, boolean up) {
        if (parentNode == null)
            return -1;

        Node[] nodes = parentNode.getChildren().getNodes();
        for (int i=0; i < nodes.length; i++)
            if (nodes[i].getName().equals(node.getName()))
                return (up && i > 0) || (!up && i+1 < nodes.length) ? i : -1;

        return -1;
    }

    private void updateInfoLabel(org.openide.nodes.Node[] nodes) {
        String text = " "; // NOI18N
        if (nodes.length == 1) {
            PaletteItem item = (PaletteItem) nodes[0].getCookie(PaletteItem.class);
            if (item != null)
                text = PaletteUtils.getItemComponentDescription(item);
        }
        infoLabel.setText(text);
    }
}