Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation; either version 3 of the License, or (at your option) any later

 * version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.featureform.swing.impl.dynformfield.linkforeingkey;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.net.URL;

import java.util.List;

import java.util.Objects;

import javax.swing.BorderFactory;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JComponent;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.ListModel;

import javax.swing.event.ListDataListener;

import javax.swing.text.JTextComponent;

import org.gvsig.featureform.swing.JFeaturesForm;

import org.gvsig.featureform.swing.JFeaturesForm.FeaturesFormContext;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.ForeingKey;

import org.gvsig.fmap.dal.feature.ForeingKey.ContextForeingKey;

import org.gvsig.fmap.dal.swing.DALSwingLocator;

import org.gvsig.fmap.dal.swing.DataSwingManager;

import org.gvsig.tools.dispose.DisposeUtils;

import org.gvsig.tools.dynform.DynFormFieldDefinition;

import org.gvsig.tools.dynform.JDynForm;

import org.gvsig.tools.dynform.JDynFormField;

import org.gvsig.tools.dynform.spi.DynFormSPIManager;

import org.gvsig.tools.dynform.spi.DynFormSPIManager.ComponentsFactory;

import org.gvsig.tools.dynform.spi.dynformfield.AbstractJDynFormField;

import org.gvsig.tools.dynform.spi.dynformfield.JDynFormFieldFactory;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.swing.api.ToolsSwingLocator;

import org.gvsig.tools.swing.api.windowmanager.Dialog;

import org.gvsig.tools.swing.api.windowmanager.WindowManager;

import org.gvsig.tools.swing.api.windowmanager.WindowManager_v2;

@SuppressWarnings("UseSpecificCatch")

public class JDynFormFieldForeingKey extends AbstractJDynFormField implements JDynFormField {

    private Object assignedValue = null;

    private Object value = null;

    private JTextComponent txtDescription = null;

    private JButton btnLink = null;

    private JButton btnUnlink = null;

    private JButton btnEdit = null;

    public JDynFormFieldForeingKey(

            DynFormSPIManager serviceManager,

            DynFormSPIManager.ComponentsFactory componentsFactory,

            JDynFormFieldFactory factory,

            DynFormFieldDefinition definition,

            Object value

    ) {

        super(serviceManager, componentsFactory, factory, definition, value);

        if (value != null) {

            this.assignedValue = (DynObject) value;

        }

    }

    @Override

    public Object getAssignedValue() {

        return this.assignedValue;

    }

    public void initComponentIfNeed() {

        if (this.contents == null) {

            this.initComponent();

        }

    }

    @Override

    public void initComponent() {

        ComponentsFactory components = this.getComponentsFactory();

        this.txtDescription = components.getJTextField(this.getDefinition(), null);

        if( this.txtDescription==null ) {

            this.txtDescription = new JTextField();

        }

        this.btnLink = components.getJButton(this.getDefinition(), "Link");

        if( this.btnLink==null ) {

            this.btnLink = new JButton();

        }

        this.btnUnlink = components.getJButton(this.getDefinition(), "Unlink");

        if( this.btnUnlink==null ) {

            this.btnUnlink = new JButton();

        }

        this.btnEdit = components.getJButton(this.getDefinition(), "Edit");

        if( this.btnEdit==null ) {

            this.btnEdit = new JButton();

        }

        this.initButton(this.btnLink, "Select item to link", "link.png");

        this.initButton(this.btnUnlink, "Remove link", "unlink.png");

        this.initButton(this.btnEdit, "View linked item", "edit.png");

        this.btnLink.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent ae) {

                doLink();

            }

        });

        this.btnUnlink.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent ae) {

                doUnlink();

            }

        });

        this.btnEdit.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent ae) {

                doEdit();

            }

        });

        this.txtDescription.setText("                        ");

        this.txtDescription.setEditable(false);

        boolean enabled = !this.isReadOnly();

        this.btnEdit.setEnabled(enabled);

        this.btnLink.setEnabled(enabled);

        this.btnUnlink.setEnabled(enabled);

        JPanel panel = new JPanel();

        if( !components.containsJTextField(this.getDefinition(), null) ) {

            panel.setLayout(new GridBagLayout());

            GridBagConstraints c = new GridBagConstraints();

            c.fill = GridBagConstraints.HORIZONTAL;

            c.ipadx = 4;

            c.ipady = 1;

            c.gridx = 1;

            c.gridy = 0;

            c.weightx = 1;

            panel.add(this.txtDescription, c);

            c.fill = GridBagConstraints.NONE;

            c.ipadx = 4;

            c.ipady = 1;

            c.gridx = 2;

            c.gridy = 0;

            c.weightx = 0;

            panel.add(this.btnLink, c);

            c.fill = GridBagConstraints.NONE;

            c.ipadx = 4;

            c.ipady = 1;

            c.gridx = 3;

            c.gridy = 0;

            c.weightx = 0;

            panel.add(this.btnUnlink, c);

            c.fill = GridBagConstraints.NONE;

            c.ipadx = 4;

            c.ipady = 1;

            c.gridx = 4;

            c.gridy = 0;

            c.weightx = 0;

            panel.add(this.btnEdit, c);

        }

        this.contents = panel;

        this.setValue(this.assignedValue);

    }

    private JButton initButton(JButton button, final String tip, final String image) {

        if( button.getIcon()==null ) {

            URL url = this.getClass().getClassLoader().getResource("org/gvsig/featureform/swing/impl/" + image);

            Icon icon = new ImageIcon(url);

            button.setIcon(icon);

        }

        if( button.getText().trim().equals("...") ) {

            button.setText("");

        }

        button.setBorder(BorderFactory.createEmptyBorder());

        button.setBorderPainted(false);

        button.setFocusPainted(false);

        button.setContentAreaFilled(false);

        button.setToolTipText(tip);

        button.setCursor(new Cursor(Cursor.HAND_CURSOR));

        return button;

    }

    private ForeingKey getForeingKey() {

        JDynForm.DynFormContext context = this.getForm().getContext();

        if( !(context instanceof FeaturesFormContext) ) {

            return null;

        }

        FeatureType featureType = ((FeaturesFormContext)context).getFeatureType();

        if( featureType==null ) {

            return null;

        }

        FeatureAttributeDescriptor attribute = featureType.getAttributeDescriptor(this.getName());

        if( attribute == null ) {

            return null;

        }

        ForeingKey foreingKey = attribute.getForeingKey();

        return foreingKey;

    }

    private void doLink() {

        final ForeingKey foreingKey = this.getForeingKey();

        if( foreingKey==null ) {

            return;

        }

        final ContextForeingKey context = foreingKey.createContext();

        try {

            final List<Feature> features = foreingKey.getFeatures(context);

            ListModel<String> model = new ListModel<String>() {

                @Override

                public int getSize() {

                    return features.size();

                }

                @Override

                public String getElementAt(int index) {

                    Feature feature = features.get(index);

                    ForeingKey foreingKey = getForeingKey();

                    return foreingKey.getLabel(context, feature);

                }

                @Override

                public void addListDataListener(ListDataListener l) {

                }

                @Override

                public void removeListDataListener(ListDataListener l) {

                }

            };

            WindowManager_v2 winManager = (WindowManager_v2) ToolsSwingLocator.getWindowManager();

            final JList<String> jlist = new JList<>();

            jlist.setModel(model);

            jlist.setPreferredSize(new Dimension(350, 200));

            final Dialog dialog = winManager.createDialog(

                    jlist,

                    "Select",

                    "Select the '"+this.getLabel()+"'.", 

                    WindowManager_v2.BUTTONS_OK_CANCEL

            );

            dialog.addActionListener(new ActionListener() {

                @Override

                public void actionPerformed(ActionEvent e) {

                    if( dialog.getAction()==WindowManager_v2.BUTTON_OK ) {

                        int n = jlist.getSelectedIndex();

                        if( n<0 ) {

                            return;

                        }

                        Feature feature = features.get(n);

                        if( feature!=null ) {

                            setValue(foreingKey.getCode(context, feature));

                        }

                    }

                }

            });

            dialog.show(WindowManager.MODE.DIALOG);

        } catch (Exception ex) {

            LOGGER.warn("Can't show selector", ex);

        } finally {

            DisposeUtils.disposeQuietly(context);

        }

    }

    private void doUnlink() {

        this.clear();

    }

    private void doEdit() {

        if (this.value == null) {

            return;

        }

        final ForeingKey foreingKey = this.getForeingKey();

        if( foreingKey==null ) {

            return;

        }

        final ContextForeingKey context = foreingKey.createContext();

        try {

            this.btnEdit.setEnabled(false);

            DataSwingManager dataSwingManager = DALSwingLocator.getSwingManager();

            FeatureQuery query = foreingKey.getQuery(context, value);

            JFeaturesForm form = dataSwingManager.createJFeaturesForm(

                    foreingKey.getFeatureStore(context)

            );

            form.setQuery(query);

            form.showForm(WindowManager.MODE.WINDOW);

        } catch (Exception ex) {

            LOGGER.warn("Can't show linked form", ex);

        } finally {

            this.btnEdit.setEnabled(true);

            DisposeUtils.disposeQuietly(context);

        }

    }

    private String getDescription() {

        if (this.value == null) {

            return null;

        }

        try {

            final ForeingKey foreingKey = this.getForeingKey();

            if( foreingKey==null ) {

                return null;

            }

            String description = foreingKey.getLabel(null, value);

            return description;

        } catch (Exception ex) {

        }

        return null;

    }

    @Override

    public void setReadOnly(boolean readonly) {

        initComponentIfNeed();

        this.readOnly = readonly;

        boolean editable = !readonly;

        JComponent jlabel = this.getJLabel();

        if( jlabel !=null ) {

            jlabel.setEnabled(editable);

        }

        this.txtDescription.setEditable(false);

        this.btnEdit.setEnabled(true);

        this.btnLink.setEnabled(editable);

        this.btnUnlink.setEnabled(editable);

    }

    @Override

    public void setValue(Object value) {

        initComponentIfNeed();

        if (value == null) {

            this.clear();

            return;

        }

        this.value = value;

        this.txtDescription.setText(Objects.toString(this.getDescription(), ""));

    }

    @Override

    public Object getValue() {

        return this.value;

    }

    @Override

    public boolean hasValidValue() {

        return true;

    }

    @Override

    public void clear() {

        initComponentIfNeed();

        this.value = null;

        this.txtDescription.setText("");

    }

}