/*
 *                 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.ant.freeform.ui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.Image;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyVetoException;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.ResourceBundle;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.tree.TreeSelectionModel;
import org.netbeans.api.project.Project;
import org.netbeans.api.project.ProjectManager;
import org.netbeans.modules.ant.freeform.FreeformProject;
import org.netbeans.modules.ant.freeform.FreeformProjectGenerator;
import org.netbeans.modules.ant.freeform.FreeformProjectType;
import org.netbeans.spi.project.AuxiliaryConfiguration;
import org.netbeans.spi.project.support.ant.AntProjectHelper;
import org.openide.DialogDescriptor;
import org.openide.explorer.ExplorerManager;
import org.openide.explorer.view.BeanTreeView;
import org.openide.nodes.AbstractNode;
import org.openide.nodes.Children;
import org.openide.nodes.Node;
import org.openide.util.HelpCtx;
import org.openide.util.NbBundle;
import org.openide.util.Utilities;
import org.w3c.dom.Element;

/**
 *
 * @author Petr Hrebejk, David Konecny
 */
public class ProjectCustomizer extends javax.swing.JPanel implements HelpCtx.Provider {

    private Component currentCustomizer;
    private GridBagConstraints fillConstraints;
    private List panels;
    private AntProjectHelper helper;
    private ProjectModel model;
    private FreeformProject project;
    private String projectType;

    private DialogDescriptor dialogDescriptor;
    
    private static final String PROJECT_TYPE_J2SE = "j2se"; // NOI18N
    private static final String PROJECT_TYPE_WEB = "webapps"; // NOI18N
    private static final String GENERAL_ICON = "general.gif"; // NOI18N
    
    public ProjectCustomizer(FreeformProject project, AntProjectHelper helper) {
        this.helper = helper;
        this.project = project;
        initComponents();
        HelpCtx.setHelpIDString( customizerPanel, "org.netbeans.modules.ant.freeform.ui.ProjectCustomizer" ); // NOI18N
        
        fillConstraints = new GridBagConstraints();
        fillConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
        fillConstraints.gridheight = java.awt.GridBagConstraints.REMAINDER;
        fillConstraints.fill = java.awt.GridBagConstraints.BOTH;
        fillConstraints.weightx = 1.0;
        fillConstraints.weighty = 1.0;

        try {
            Project p = ProjectManager.getDefault().findProject(helper.getProjectDirectory());
            AuxiliaryConfiguration aux = (AuxiliaryConfiguration)p.getLookup().lookup(AuxiliaryConfiguration.class);
            Element data = aux.getConfigurationFragment("web-data", FreeformProjectType.NS_WEB, true); // NOI18N
            if (data == null)
                projectType = PROJECT_TYPE_J2SE;
            else
                projectType = PROJECT_TYPE_WEB;
        } catch (IOException exc) {
            projectType = PROJECT_TYPE_J2SE;
        }

        categoryPanel.add(new CategoryView(createRootNode()), fillConstraints);
    }

    void save() {
        Iterator it = panels.iterator();
        while (it.hasNext()) {
            Panel panel = (Panel)it.next();
            panel.storeValues(project, helper, getProjectDataModel());
        }
        ProjectModel.saveProject(helper, getProjectDataModel());
    }

    /** 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;

        categoryPanel = new javax.swing.JPanel();
        jPanel1 = new javax.swing.JPanel();
        customizerPanel = new javax.swing.JPanel();

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

        setPreferredSize(new java.awt.Dimension(750, 450));
        getAccessibleContext().setAccessibleDescription(org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "ACSD_ProjectCustomizer"));
        categoryPanel.setLayout(new java.awt.GridBagLayout());

        categoryPanel.setBorder(new javax.swing.border.EtchedBorder());
        categoryPanel.setMinimumSize(new java.awt.Dimension(220, 4));
        categoryPanel.setPreferredSize(new java.awt.Dimension(220, 4));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridheight = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(8, 8, 8, 8);
        add(categoryPanel, gridBagConstraints);
        categoryPanel.getAccessibleContext().setAccessibleName(org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "ACSN_ProjectCustomizer_categoryPanel"));
        categoryPanel.getAccessibleContext().setAccessibleDescription(org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "ACSD_ProjectCustomizer_categoryPanel"));

        jPanel1.setLayout(new java.awt.GridBagLayout());

        jPanel1.setBorder(new javax.swing.border.EtchedBorder());
        customizerPanel.setLayout(new java.awt.GridBagLayout());

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.gridheight = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 12, 12);
        jPanel1.add(customizerPanel, gridBagConstraints);
        customizerPanel.getAccessibleContext().setAccessibleName(org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "ACSN_ProjectCustomizer_customizerPanel"));
        customizerPanel.getAccessibleContext().setAccessibleDescription(org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "ACSD_ProjectCustomizer_customizerPanel"));

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.gridheight = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(8, 4, 8, 8);
        add(jPanel1, gridBagConstraints);

    }//GEN-END:initComponents


     // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel categoryPanel;
    private javax.swing.JPanel customizerPanel;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration//GEN-END:variables

    public void setDialogDescriptor( DialogDescriptor dialogDescriptor ) {
        this.dialogDescriptor = dialogDescriptor;
    }
    
    // HelpCtx.Provider implementation -----------------------------------------
    
    public HelpCtx getHelpCtx() {
        if ( currentCustomizer != null ) {
            return HelpCtx.findHelp( currentCustomizer );
        }
        else {
            return HelpCtx.findHelp( customizerPanel );
        }
    }
    
    // Private innerclasses ----------------------------------------------------

    private class CategoryView extends JPanel implements ExplorerManager.Provider {

        private ExplorerManager manager;
        private BeanTreeView btv;

        CategoryView( Node rootNode ) {

            // See #36315
            manager = new ExplorerManager();

            setLayout( new BorderLayout() );

            Dimension size = new Dimension( 220, 4 );
            btv = new BeanTreeView();    // Add the BeanTreeView
            btv.setSelectionMode( TreeSelectionModel.SINGLE_TREE_SELECTION );
            btv.setPopupAllowed( false );
            btv.setRootVisible( false );
            btv.setDefaultActionAllowed( false );
            btv.setMinimumSize( size );
            btv.setPreferredSize( size );
            btv.setMaximumSize( size );
            this.add( btv, BorderLayout.CENTER );
            manager.setRootContext( rootNode );
            manager.addPropertyChangeListener( new ManagerChangeListener() );
            selectFirstNode();
            btv.expandAll();

        }

        public ExplorerManager getExplorerManager() {
            return manager;
        }

        public void addNotify() {
            super.addNotify();
            btv.expandAll();
        }

        private void selectFirstNode() {

            Children ch = manager.getRootContext().getChildren();
            if ( ch != null ) {
                Node nodes[] = ch.getNodes();

                if ( nodes != null && nodes.length > 0 ) {
                    try {
                        manager.setSelectedNodes( new Node[] { nodes[0] } );
                    }
                    catch ( PropertyVetoException e ) {
                        // No node will be selected
                    }
                }
            }

        }


        /** Listens to selection change and shows the customizers as
         *  panels
         */

        private class ManagerChangeListener implements PropertyChangeListener {

            public void propertyChange(PropertyChangeEvent evt) {
                if(evt.getSource() != manager) {
                    return;
                }

                if (ExplorerManager.PROP_SELECTED_NODES.equals(evt.getPropertyName())) {
                    Node nodes[] = manager.getSelectedNodes();
                    if ( nodes == null || nodes.length <= 0 ) {
                        return;
                    }
                    Node node = nodes[0];

                    if ( currentCustomizer != null ) {
                        if ( currentCustomizer instanceof Panel ) {
                            ((Panel)currentCustomizer).hide(project, helper, getProjectDataModel());
                        }
                        customizerPanel.remove( currentCustomizer );
                    }
                    if ( node.hasCustomizer() ) {
                        currentCustomizer = node.getCustomizer();

                        if ( currentCustomizer instanceof Panel ) {
                            ((Panel)currentCustomizer).show(project, helper, getProjectDataModel());
                        }

                        /*
                        if ( currentCustomizer instanceof javax.swing.JComponent ) {
                            ((javax.swing.JComponent)currentCustomizer).setPreferredSize( new java.awt.Dimension( 600, 0 ) );
                        }
                        */
                        customizerPanel.add( currentCustomizer, fillConstraints );
                        customizerPanel.validate();
                        customizerPanel.repaint();
                        if ( ProjectCustomizer.this.dialogDescriptor != null ) {
                            ProjectCustomizer.this.dialogDescriptor.setHelpCtx( ProjectCustomizer.this.getHelpCtx() );
                        }


                    }
                    else {
                        currentCustomizer = null;
                    }

                    return;
                }
            }
        }
    }

    // Private methods ---------------------------------------------------------

    private Node createRootNode() {

        String ICON_FOLDER = "org/netbeans/modules/ant/freeform/resources/"; // NOI18N
        ResourceBundle bundle = NbBundle.getBundle(ProjectCustomizer.class);

        Component compGeneral = new GeneralPanel();
        Component compTargetMapping = new TargetMappingPanel(projectType);
        Component compSourceFolders = new SourceFoldersPanel();
        Component compClasspath = new ClasspathPanel();
        Component compOutput = new OutputPanel();
        
        ConfigurationDescription cdGeneral = new ConfigurationDescription(
            "General", // NOI18N
            org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_General"),
            ICON_FOLDER + GENERAL_ICON,
            compGeneral,
            null );
        ConfigurationDescription cdTargets = new ConfigurationDescription(
            "Targets", // NOI18N
            org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_Targets"),
            ICON_FOLDER + GENERAL_ICON,
            compTargetMapping,
            null );
        ConfigurationDescription cdSources = new ConfigurationDescription(
            "Sources", // NOI18N
            org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_Sources"),
            ICON_FOLDER + GENERAL_ICON,
            compSourceFolders,
            null );
        ConfigurationDescription cdClasspath = new ConfigurationDescription(
            "Classpath", // NOI18N
            org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_Classpath"),
            ICON_FOLDER + GENERAL_ICON,
            compClasspath,
            null );
        ConfigurationDescription cdOutput = new ConfigurationDescription(
            "Output", // NOI18N
            org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_Output"),
            ICON_FOLDER + GENERAL_ICON,
            compOutput,
            null );

        ConfigurationDescription descriptions[];
        if (projectType.equals(PROJECT_TYPE_WEB)) {
            Component compWebSrc = new WebLocationsPanel();
            
            ConfigurationDescription cdWebSrc = new ConfigurationDescription(
                "Web Sources", // NOI18N
                org.openide.util.NbBundle.getMessage(ProjectCustomizer.class, "LBL_ProjectCustomizer_Category_Web"),
                ICON_FOLDER + GENERAL_ICON,
                compWebSrc,
                null );
            descriptions = new ConfigurationDescription[] {cdGeneral, cdTargets, cdWebSrc, cdSources, cdClasspath, cdOutput};
            panels = Arrays.asList(new Object[]{compGeneral, compTargetMapping, compWebSrc, compSourceFolders, compClasspath, compOutput});
        } else {
            descriptions = new ConfigurationDescription[] {cdGeneral, cdTargets, cdSources, cdClasspath, cdOutput};
            panels = Arrays.asList(new Object[]{compGeneral, compTargetMapping, compSourceFolders, compClasspath, compOutput});
        }

        ConfigurationDescription rootDescription = new ConfigurationDescription(
        "InvisibleRoot", "InvisibleRoot", null, null, descriptions );  // NOI18N

        return new ConfigurationNode( rootDescription );


    }

    private ProjectModel getProjectDataModel() {
        if (model == null) {
            model = ProjectModel.createModel(project, helper);
        }
        return model;
    }
    
    // Private meyhods ---------------------------------------------------------

    // XXX Remove when all panels have some options

    private static javax.swing.JLabel createEmptyLabel( String text ) {

        JLabel label;
        if ( text == null ) {
            label = new JLabel();
        }
        else {
            label = new JLabel( text );
            label.setHorizontalAlignment( JLabel.CENTER );
        }

        return label;
    }

    // Private innerclasses ----------------------------------------------------

    /** Class describing the configuration node. Prototype of the
     *  configuration node.
     */
    private static class ConfigurationDescription {


        private String name;
        private String displayName;
        private String iconResource;
        private Component customizer;
        private ConfigurationDescription[] children;
        // XXX Add Node.Properties

        ConfigurationDescription( String name,
        String displayName,
        String iconResource,
        Component customizer,
        ConfigurationDescription[] children ) {

            this.name = name;
            this.displayName = displayName;
            this.iconResource = iconResource;
            this.customizer = customizer;
            this.children = children;
        }

    }


    /** Node to be used for configuration
     */
    private static class ConfigurationNode extends AbstractNode {

        private Component customizer;
        /** resource path to icon, or null */
        private final String iconResource;

        public ConfigurationNode( ConfigurationDescription description ) {
            super( description.children == null ? Children.LEAF : new ConfigurationChildren( description.children ) );
            setName( description.name );
            setDisplayName( description.displayName );
            this.iconResource = description.iconResource;
            this.customizer = description.customizer;
        }

        public boolean hasCustomizer() {
            return true;
        }

        public Component getCustomizer() {
            return customizer;
        }

        public Image getIcon(int type) {
            if (iconResource != null) {
                return Utilities.loadImage(iconResource, true);
            } else {
                return super.getIcon(type);
            }
        }

        public Image getOpenedIcon(int type) {
            if (iconResource != null) {
                return Utilities.loadImage(iconResource, true);
            } else {
                return super.getOpenedIcon(type);
            }
        }

    }

    /** Children used for configuration
     */
    private static class ConfigurationChildren extends Children.Keys {

        private Collection descriptions;

        public ConfigurationChildren( ConfigurationDescription[] descriptions ) {
            this.descriptions = Arrays.asList( descriptions );
        }

        // Children.Keys impl --------------------------------------------------

        public void addNotify() {
            setKeys( descriptions );
        }

        public void removeNotify() {
            setKeys( Collections.EMPTY_LIST );
        }

        protected Node[] createNodes( Object key ) {
            return new Node[] { new ConfigurationNode( (ConfigurationDescription)key ) };
        }
    }

    /**
     * Interface to be implemented by the panels which are shown in the Project
     * Customizer. The methods allow to react on the UI changes that is: panel is
     * going to be visible; user switched to different panel; and user pressed Save
     * to persists customization done in the panel.
     */
    static interface Panel {

        /**
         * Called on your panel whenever it is going to be shown to user,
         * eg. when user selects its node in project customizer. The method
         * can be called multiple times when Project Customizer is visible.
         * @param project access to FreeformProject; useful for reading properties, etc.
         * @param helper AntProjectHelper
         * @param model project data model. Useful when the same project data are
         *    customized in more then one customizer panel. For example Java
         *    compilation unit is configured in two panels - classpath and output.
         *    Both these panels need to access the same memory representation
         *    of the compilation unit so that they can cooperate on them and save
         *    them when OK is pressed or thrown them away otherwise.
         */
        public void show(FreeformProject project, AntProjectHelper helper, ProjectModel model);

        /**
         * Called on your panel whenever it is hiding, that is when user 
         * selected different panel node in Project Customizer. This method
         * is not called when user closes the Project Customizer. If user pressed
         * Save then {@link #storeValues} method is called.
         * @param project access to FreeformProject; useful for reading properties, etc.
         * @param helper AntProjectHelper
         * @param model project data model. Useful when the same project data are
         *    customized in more then one customizer panel. For example Java
         *    compilation unit is configured in two panels - classpath and output.
         *    Both these panels need to access the same memory representation
         *    of the compilation unit so that they can cooperate on them and save
         *    them when OK is pressed or thrown them away otherwise.
         */
        public void hide(FreeformProject project, AntProjectHelper helper, ProjectModel model);

        /**
         * Persists customizations done in the panel. Called only when user
         * pressed OK in cusotmizer.
         * @param project access to FreeformProject; useful for reading properties, etc.
         * @param helper AntProjectHelper
         * @param model project data model. Useful when the same project data are
         *    customized in more then one customizer panel. For example Java
         *    compilation unit is configured in two panels - classpath and output.
         *    Both these panels need to access the same memory representation
         *    of the compilation unit so that they can cooperate on them and save
         *    them when OK is pressed or thrown them away otherwise.
         */
        public void storeValues(FreeformProject project, AntProjectHelper helper, ProjectModel model);

    }

}