package org.netbeans.modules.url;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import org.openide.awt.Actions;
import org.openide.loaders.DataNode;
import org.openide.loaders.DataObject;
import org.openide.nodes.Children;
import org.openide.nodes.Node;
import org.openide.nodes.PropertySupport;
import org.openide.nodes.Sheet;
import org.openide.util.NbBundle;

/**
 * URL node representing URLDataObject.
 * It has no children, the default action opens an editor or instantiates
 * a template.
 *
 * @author  Ian Formanek
 * @author  Marian Petras
 */
final class URLNode extends DataNode {

    /** Default constructor, constructs node */
    public URLNode(final DataObject dataObject) {
        super(dataObject, Children.LEAF);
        setIconBase("org/netbeans/modules/url/urlObject");              //NOI18N

        // Trick: To have a node name localized but remain the object name 
        // the same until renamed explictly. -> due to be able show
        // node names without ampersands for shortcuts and be able to show
        // shortcuts in bookmarks menu.
        // Note: see getDisplayName method bellow.
        setName(super.getDisplayName(), false);
    }

    /**
     * Gets the display name.
     * Cuts ampersand from the original display name.
     *
     * @return  URLDataObject's display name without the first
     *          ampersand (&), if there was any
     */
    public String getDisplayName() {
        return Actions.cutAmpersand(super.getDisplayName());
    }

    /** */
    protected Sheet createSheet() {
        Sheet sheet = super.createSheet();
        Sheet.Set sheetSet = sheet.get(Sheet.PROPERTIES);

        // Name property is replaced by so we could show the localized name
        // of node instead of the non-localized name of file on the disk 
        // which could differ at the start.
        sheetSet.remove(DataObject.PROP_NAME);
        sheetSet.put(createNameProperty());
        sheetSet.put(createURLStringProperty());

        return sheet;
    }

    /** Creates a name property. */
    private Node.Property createNameProperty() {
        String displayName = NbBundle.getMessage(
                URLNode.class, "PROP_Name");                            //NOI18N
        String shortDescription = NbBundle.getMessage(
                URLNode.class, "PROP_NameShortDescription");            //NOI18N
        return new PropertySupport.ReadWrite(DataObject.PROP_NAME,
                                             String.class,
                                             displayName,
                                             shortDescription) {

            public Object getValue() {
                return URLNode.this.getName();
            }

            public void setValue (Object val) throws IllegalAccessException,
                IllegalArgumentException, InvocationTargetException {
                if (!canWrite()) {
                    throw new IllegalAccessException();
                }
                if (!(val instanceof String)) {
                    throw new IllegalArgumentException();
                }

                try {
                    getDataObject().rename((String) val);
                } catch (IOException ex) {
                    throw new InvocationTargetException (ex);
                }
            }

            public boolean canWrite () {
                return getDataObject().isRenameAllowed();
            }
        };
    }

    /**
     * Creates a property for editing a URL string.
     *
     * @return  property for URL string or null
     */
    private Node.Property createURLStringProperty() {
        String displayName = NbBundle.getMessage(
                URLNode.class, "PROP_URLDisplayName");                  //NOI18N
        String shortDescription = NbBundle.getMessage(
                URLNode.class, "PROP_URLShortDescription");             //NOI18N
        Node.Property urlStringProperty = new PropertySupport.ReadWrite(
                URLDataObject.PROP_URL,
                String.class,
                displayName,
                shortDescription) {

            public Object getValue() {
                return ((URLDataObject) getDataObject()).getURLString();
            }

            public void setValue(Object val)
                    throws IllegalAccessException,
                           IllegalArgumentException,
                           InvocationTargetException {
                if (!canWrite()) {
                    throw new IllegalAccessException();
                }
                if (!(val instanceof String)) {
                    throw new IllegalArgumentException();
                }
                ((URLDataObject) getDataObject()).setURLString((String) val);
            }
        };

        urlStringProperty.setPreferred(true);

        return urlStringProperty;
    }

}