Application: gvSIG desktop » Library: org.gvsig.tools

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 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 2

 * 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.tools.swing.impl.component;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.GridLayout;

import java.awt.Insets;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.ArrayList;

import javax.swing.AbstractButton;

import javax.swing.BorderFactory;

import javax.swing.ButtonGroup;

import javax.swing.DefaultListModel;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollBar;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextPane;

import javax.swing.ListSelectionModel;

import javax.swing.ScrollPaneConstants;

import javax.swing.border.EmptyBorder;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import javax.swing.text.SimpleAttributeSet;

import javax.swing.text.StyleConstants;

import javax.swing.text.StyledDocument;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynClass;

import org.gvsig.tools.dynobject.DynField;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.evaluator.EvaluatorWithDescriptions;

import org.gvsig.tools.evaluator.EvaluatorWithDescriptions.Description;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.swing.api.evaluator.EvaluatorPanel;

//import org.gvsig.tools.swing.impl.dynobject.dynfield.DynFieldListItem;

/**

 * 

 * @author jldominguez

 *

 */

public class DefaultEvaluatorPanel extends EvaluatorPanel

implements ListSelectionListener, MouseListener, ActionListener {

    private DynClass dynclass = null;

    private EvaluatorWithDescriptions eval_wdesc = null;

    private JTextArea expressionArea = null;

    private JList fieldList = null;

    private JList opfuList = null;

    private JPanel categRadioPanel = null;

    private JTextArea fieldExplainLabel = null;

    private JTextArea opfuDescLabel = null;

    private JRadioButton num_CategRB = null;

    private JRadioButton str_CategRB = null;

    private JRadioButton dat_CategRB = null;

    private JRadioButton geo_CategRB = null;

    private JRadioButton boo_CategRB = null;

    private JRadioButton all_CategRB = null;

    private JPanel opfuDescPanel = null;

    private JScrollPane opfuDescScroll = null;

    private JPanel opfuPanel = null;

    private JPanel fieldsPanel = null;

    private JPanel topPanel = null;

    private JPanel expressionPanel = null;

    private JButton clearButton = null;

    private JButton validateButton = null;

    private static I18nManager im = ToolsLocator.getI18nManager();

    public DefaultEvaluatorPanel(

        DynClass dcla, EvaluatorWithDescriptions evaluator) {

        initialize(dcla, evaluator);

    }

    public String getExpression() {

        return getExpressionArea().getText();

    }

    public void initialize(DynClass dcla, EvaluatorWithDescriptions evaluator) {

        dynclass = dcla;

        eval_wdesc = evaluator;

        initComponents();

    }

    /**

     * 

     */

    private void initComponents() {

        this.setLayout(new GridBagLayout());

        GridBagConstraints gbc = new GridBagConstraints();

        gbc.fill = GridBagConstraints.BOTH;

        gbc.weightx = 1;

        gbc.weighty = 0.8;

        gbc.gridheight = 2;

        gbc.gridx = 0;

        gbc.gridy = 0;

        this.add(getTopPanel(), gbc);

        gbc.weightx = 1;

        gbc.weighty = 0.2;

        gbc.gridheight = 1;

        gbc.gridy = 2;

        gbc.insets = new Insets(5, 0, 0, 0);

        this.add(getExpressionPanel(), gbc);

    }

    private JTextArea getExpressionArea() {

        if (expressionArea == null) {

            expressionArea = new JTextArea();

            expressionArea.setLineWrap(true);

            expressionArea.setWrapStyleWord(true);

            if (eval_wdesc != null) {

                expressionArea.setText(eval_wdesc.getSQL());

            }

        }

        return expressionArea;

    }

    private JPanel getExpressionPanel() {

        if (expressionPanel == null) {

            expressionPanel = new JPanel();

            expressionPanel.setLayout(new BorderLayout());

            expressionPanel.setBorder(BorderFactory.createTitledBorder(

                im.getTranslation("_User_expression")));

            JScrollPane scroll = new JScrollPane(getExpressionArea());

            scroll.setHorizontalScrollBarPolicy(

                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);

            scroll.setVerticalScrollBarPolicy(

                ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);

            expressionPanel.add(scroll, BorderLayout.CENTER);

            JPanel buttonsp = new JPanel();

            buttonsp.setLayout(new GridLayout(1, 1));

            // ========================

            // JPanel aux = new JPanel();

            // aux.add(getValidateButton());

            // buttonsp.add(aux);

            // =====================

            JPanel aux = new JPanel();

            aux.add(getClearButton());

            buttonsp.add(aux);

            // ===========================

            expressionPanel.add(buttonsp, BorderLayout.EAST);

        }

        return expressionPanel;

    }

    /**

     * @return

     */

    private Component getClearButton() {

        if (clearButton == null) {

            clearButton = new JButton(im.getTranslation("_Clear"));

            clearButton.addActionListener(this);

        }

        return clearButton;

    }

    /**

     * @return

     */

    private JButton getValidateButton() {

        if (validateButton == null) {

            validateButton = new JButton(im.getTranslation("_Validate"));

            validateButton.addActionListener(this);

        }

        return validateButton;

    }

    private JList getFieldList() {

        if (fieldList == null) {

            fieldList = new JList();

            if (dynclass != null) {

                fieldList.addListSelectionListener(this);

                DynField[] ff = dynclass.getDynFields();

                DefaultListModel resultList = new DefaultListModel();

                for (int i=0; i<ff.length; i++) {

                    resultList.addElement(ff[i].getName());

                }

                fieldList.setModel(resultList);

                fieldList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                fieldList.addMouseListener(this);

            }

        }

        return fieldList;

    }

    private JList getOpfuList() {

        if (opfuList == null) {

            opfuList = new JList();

            reloadOpfuList(opfuList);

            opfuList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

            opfuList.addListSelectionListener(this);

            opfuList.addMouseListener(this);

        }

        return opfuList;

    }

    private void reloadOpfuList(JList list) {

        DefaultListModel dlm = new DefaultListModel();

        if (this.eval_wdesc != null) {

            Description[] descs = getCurrentDescriptions(eval_wdesc);

            for (int i=0; i<descs.length; i++) {

                dlm.addElement(new DescriptionListItem(descs[i]));

            }

        }

        list.setModel(dlm);

    }

    private Description[] getCurrentDescriptions(

        EvaluatorWithDescriptions eval) {

        int goodbits = 0;

        if (getAllCategRB().isSelected()) {

            goodbits =

                EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_ALL;

        } else {

            if (getNumCategRB().isSelected()) {

                goodbits = EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_NUMBER;

            } else {

                if (getStrCategRB().isSelected()) {

                    goodbits = EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_STRING;

                } else {

                    if (getDatCategRB().isSelected()) {

                        goodbits = EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_DATETIME;

                    } else {

                        if (getGeoCategRB().isSelected()) {

                            goodbits = EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_GEOMETRY;

                        } else {

                            if (getBooCategRB().isSelected()) {

                                goodbits = EvaluatorWithDescriptions.Description.DATATYPE_CATEGORY_BOOLEAN;

                            } else {

                            }

                        }

                    }

                }

            }

        }

        ArrayList list = new ArrayList();

        Description[] dd = eval.getAvailableOperators();

        int andop = 0;

        for (int i=0; i<dd.length; i++) {

            andop = (dd[i].getDataTypeCategories() & goodbits);

            if (goodbits == 0 /* all */ || andop != 0) {

                list.add(dd[i]);

            }

        }

        dd = eval.getAvailableFunctions();

        for (int i=0; i<dd.length; i++) {

            andop = (dd[i].getDataTypeCategories() & goodbits);

            if (goodbits == 0 /* all */ || andop != 0) {

                list.add(dd[i]);

            }

        }

        return (Description[]) list.toArray(new Description[0]);

    }

    private JRadioButton getAllCategRB() {

        if (all_CategRB == null) {

            this.all_CategRB = new JRadioButton(im.getTranslation("_All"));

            this.all_CategRB.addActionListener(this);

        }

        return all_CategRB;

    }

    private JRadioButton getNumCategRB() {

        if (num_CategRB == null) {

            this.num_CategRB = new JRadioButton(im.getTranslation("_Numeric"));

            this.num_CategRB.addActionListener(this);

        }

        return num_CategRB;

    }

    private JRadioButton getStrCategRB() {

        if (str_CategRB == null) {

            this.str_CategRB = new JRadioButton(im.getTranslation("_String"));

            this.str_CategRB.addActionListener(this);

        }

        return str_CategRB;

    }

    private JRadioButton getDatCategRB() {

        if (dat_CategRB == null) {

            this.dat_CategRB = new JRadioButton(

                im.getTranslation("_Date_or_time"));

            this.dat_CategRB.addActionListener(this);

        }

        return dat_CategRB;

    }

    private JRadioButton getGeoCategRB() {

        if (geo_CategRB == null) {

            this.geo_CategRB = new JRadioButton(im.getTranslation("_Geometry"));

            this.geo_CategRB.addActionListener(this);

        }

        return geo_CategRB;

    }

    private JPanel getCategRadioPanel() {

        if (categRadioPanel == null) {

            categRadioPanel = new JPanel();

            ButtonGroup bg = new ButtonGroup();

            bg.add(getAllCategRB());

            bg.add(getNumCategRB());

            bg.add(getStrCategRB());

            bg.add(getDatCategRB());

            bg.add(getBooCategRB());

            bg.add(getGeoCategRB());

            getAllCategRB().setSelected(true);

            categRadioPanel.setLayout(new GridBagLayout());

            GridBagConstraints gbc = new GridBagConstraints();

            gbc.anchor = GridBagConstraints.NORTHWEST;

            gbc.fill = GridBagConstraints.BOTH;

            gbc.weightx = 0.5;

            gbc.gridx = 0;

            gbc.gridy = 0;

            categRadioPanel.add(getAllCategRB(), gbc);

            gbc.gridy = 1;

            categRadioPanel.add(getNumCategRB(), gbc);

            gbc.gridy = 2;

            categRadioPanel.add(getStrCategRB(), gbc);

            gbc.gridy = 3;

            categRadioPanel.add(getDatCategRB(), gbc);

            gbc.gridy = 4;

            categRadioPanel.add(getBooCategRB(), gbc);

            gbc.gridy = 5;

            categRadioPanel.add(getGeoCategRB(), gbc);

            gbc.gridy = 6;

            gbc.weighty = 1;

            categRadioPanel.add(new JPanel(), gbc);

        }

        return categRadioPanel;

    }

    /**

     * @return

     */

    private JRadioButton getBooCategRB() {

        if (boo_CategRB == null) {

            this.boo_CategRB = new JRadioButton(im.getTranslation("_Boolean"));

            this.boo_CategRB.addActionListener(this);

        }

        return boo_CategRB;

    }

    private JTextArea getOpfuDescLabel(Color bgcolor) {

        if (opfuDescLabel == null) {

            opfuDescLabel = new JTextArea();

            opfuDescLabel.setEditable(false);

            opfuDescLabel.setBorder(new EmptyBorder(2,2,2,2));

            if (bgcolor != null) {

                opfuDescLabel.setBackground(bgcolor);

            }

            opfuDescLabel.setWrapStyleWord(true);

            opfuDescLabel.setLineWrap(true);

            opfuDescLabel.setFont(new JLabel().getFont());

            opfuDescLabel.setText(" \n \n \n ");

        }

        return opfuDescLabel;

    }

    private JPanel getOpfuListCategPanel() {

        if (opfuDescPanel == null) {

            opfuDescPanel = new JPanel();

            opfuDescPanel.setLayout(new GridBagLayout());

            GridBagConstraints gbc = new GridBagConstraints();

            gbc.fill = GridBagConstraints.BOTH;

            gbc.anchor = GridBagConstraints.NORTHWEST;

            gbc.weightx = 0.5;

            gbc.weighty = 1;

            gbc.gridx = 0;

            gbc.gridy = 0;

            JScrollPane scroll = new JScrollPane(getOpfuList());

            scroll.setHorizontalScrollBarPolicy(

                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);

            scroll.setVerticalScrollBarPolicy(

                ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);

            // scroll.setMinimumSize(new Dimension(100, 100));

            opfuDescPanel.add(scroll, gbc);

            gbc.weightx = 0.5;

            gbc.weighty = 1;

            gbc.gridx = 1;

            gbc.insets = new Insets(0, 5, 0, 0);

            opfuDescPanel.add(getCategRadioPanel(), gbc);

        }

        return opfuDescPanel;

    }

    private JPanel getOpfuPanel() {

        if (opfuPanel == null) {

            opfuPanel = new JPanel();

            opfuPanel.setLayout(new GridBagLayout());

            GridBagConstraints gbc = new GridBagConstraints();

            gbc.anchor = GridBagConstraints.NORTHWEST;

            gbc.fill = GridBagConstraints.BOTH;

            gbc.gridx = 0;

            gbc.gridy = 0;

            gbc.gridheight = 2;

            gbc.weightx = 1;

            gbc.weighty = 0.5;

            opfuPanel.add(getOpfuListCategPanel(), gbc);

            gbc.gridx = 0;

            gbc.gridy = 2;

            gbc.weightx = 1;

            gbc.weighty = 0.5;

            gbc.gridheight = 1;

            gbc.insets = new Insets(5, 0, 0, 0);

            opfuPanel.add(

                getOpfuDescScroll(opfuPanel.getBackground()), gbc);

            // ==================

            opfuPanel.setBorder(BorderFactory.createTitledBorder(

                im.getTranslation("_Available_functions_and_operators")));

            // ==================

            ActionEvent aev = new ActionEvent(getAllCategRB(), 0, "");

            this.actionPerformed(aev);

        }

        return opfuPanel;

    }

    private JScrollPane getOpfuDescScroll(Color bg) {

        if (opfuDescScroll == null) {

            opfuDescScroll = new JScrollPane(getOpfuDescLabel(bg));

            opfuDescScroll.setHorizontalScrollBarPolicy(

                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

            opfuDescScroll.setVerticalScrollBarPolicy(

                ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);

            opfuDescScroll.setBorder(new EmptyBorder(0, 0, 0, 0));

        }

        return opfuDescScroll;

    }

    private JTextArea getFieldExplainLabel(Color bgcolor) {

        if (fieldExplainLabel == null) {

            fieldExplainLabel = new JTextArea();

            fieldExplainLabel.setEditable(false);

            fieldExplainLabel.setBorder(new EmptyBorder(2,2,2,2));

            fieldExplainLabel.setBackground(bgcolor);

            fieldExplainLabel.setLineWrap(true);

            fieldExplainLabel.setWrapStyleWord(true);

            fieldExplainLabel.setFont(new JLabel().getFont());

            fieldExplainLabel.setText(

                im.getTranslation("_Double-click_to_paste_into_expression_box"));

        }

        return fieldExplainLabel;

    }

    private JPanel getFieldsPanel() {

        if (fieldsPanel == null) {

            fieldsPanel = new JPanel();

            fieldsPanel.setLayout(new GridLayout(1, 2, 12, 0));

            /*

            GridBagConstraints gbc = new GridBagConstraints();

            gbc.fill = GridBagConstraints.BOTH;

            gbc.anchor = GridBagConstraints.NORTHWEST;

            gbc.gridx = 0;

            gbc.gridy = 0;

            gbc.weightx = 1;

            gbc.weighty = 1;

            */

            JScrollPane scroll = new JScrollPane(getFieldList());

            scroll.setHorizontalScrollBarPolicy(

                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);

            scroll.setVerticalScrollBarPolicy(

                ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);

            scroll.setMinimumSize(new Dimension(100, 100));

            fieldsPanel.add(scroll); // , gbc);

            /*

            gbc.gridx = 1;

            gbc.insets = new Insets(0, 5, 0, 0);

            */

            fieldsPanel.add(

                getFieldExplainLabel(fieldsPanel.getBackground()));

                // , gbc);

            // ================

            fieldsPanel.setBorder(BorderFactory.createTitledBorder(

                im.getTranslation("_Available_fields")));

        }

        return fieldsPanel;

    }

    private JPanel getTopPanel() {

        if (topPanel == null) {

            topPanel = new JPanel();

            topPanel.setLayout(new GridLayout(1, 2, 12, 0));

            topPanel.add(getFieldsPanel());

            topPanel.add(getOpfuPanel());

        }

        return topPanel;

    }

    public void valueChanged(ListSelectionEvent e) {

        if (e.getSource() == this.getOpfuList()) {

            Object sel = this.getOpfuList().getSelectedValue();

            if (sel instanceof DescriptionListItem) {

                DescriptionListItem item = (DescriptionListItem) sel;

                String txt = item.getDescription().getTemplate() + " : "

                    + item.getDescription().getDescription();

                this.getOpfuDescLabel(null).setText(txt);

                this.getOpfuDescLabel(null).scrollRectToVisible(

                    new Rectangle(0, 0, 10, 10));

                // =============

                this.getOpfuDescLabel(null).setCaretPosition(0);

            } else {

                this.getOpfuDescLabel(null).setText(" \n \n \n ");

            }

            return;

        }

    }

    public void mousePressed(MouseEvent e) {

        Object src = e.getSource();

        if (src == this.getFieldList() && e.getClickCount() == 2) {

            // paste field in text area

            Object sel = this.getFieldList().getSelectedValue();

            if (sel instanceof String) {

                int pos = this.getExpressionArea().getCaretPosition();

                this.getExpressionArea().insert((String) sel, pos);

            }

            return;

        }

        if (src == this.getOpfuList() && e.getClickCount() == 2) {

            // paste function/operator in text area

            Object sel = this.getOpfuList().getSelectedValue();

            if (sel instanceof DescriptionListItem) {

                DescriptionListItem item = (DescriptionListItem) sel;

                int pos = this.getExpressionArea().getCaretPosition();

                this.getExpressionArea().insert(

                    item.getDescription().getName(), pos);

            }

            return;

        }

    }

    public void mouseReleased(MouseEvent e) { }

    public void mouseEntered(MouseEvent e) { }

    public void mouseExited(MouseEvent e) { }

    public void mouseClicked(MouseEvent e) { }

    private class DescriptionListItem {

        private Description desc = null;

        public DescriptionListItem(Description d) {

            desc = d;

        }

        public String toString() {

            return desc.getName();

        }

        public Description getDescription() {

            return desc;

        }

    }

    public void actionPerformed(ActionEvent e) {

        if (e.getSource() instanceof JRadioButton) {

            this.reloadOpfuList(this.getOpfuList());

        }

        if (e.getSource() == this.getClearButton()) {

            this.getExpressionArea().setText("");

        }

        if (e.getSource() == this.getValidateButton()) {

            // this.getExpressionArea().setText("");

        }

    }

}