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package org.gvsig.topology.swing.impl;

import java.awt.Dimension;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import javax.swing.DefaultComboBoxModel;

import javax.swing.event.DocumentEvent;

import javax.swing.event.DocumentListener;

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

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

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

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

import org.gvsig.topology.lib.api.TopologyDataSet;

import org.gvsig.topology.lib.api.TopologyLocator;

import org.gvsig.topology.lib.api.TopologyManager;

import org.gvsig.topology.lib.api.TopologyPlan;

import org.gvsig.topology.lib.api.TopologyRule;

import org.gvsig.topology.lib.api.TopologyRuleFactory;

/**

 *

 * @author jjdelcerro

 */

@SuppressWarnings("UseSpecificCatch")

public class CreateRuleDialog extends CreateRuleDialogView {

    private final TopologyPlan plan;

    private Dialog dialog;

    CreateRuleDialog(TopologyPlan plan) {

        this.plan = plan;

        this.dialog = null;

        this.initComponents();

    }

    private void initComponents() {

        ToolsSwingManager toolsSwingManager = ToolsSwingLocator.getToolsSwingManager();

        toolsSwingManager.setDefaultPopupMenu(this.txtDescription);

        this.txtDescription.setPreferredSize(new Dimension(200,200));

        DefaultComboBoxModel<TopologyDataSet> model1 = new DefaultComboBoxModel<>();

        for (TopologyDataSet dataSet : this.plan.getDataSets()) {

            model1.addElement(dataSet);

        }

        this.cboDataSet1.setModel(model1);

        this.cboDataSet1.setSelectedIndex(-1);

        this.cboDataSet1.addItemListener(new ItemListener() {

            @Override

            public void itemStateChanged(ItemEvent e) {

                performDataSet1Selected();

            }

        });

        this.cboRule.addItemListener(new ItemListener() {

            @Override

            public void itemStateChanged(ItemEvent e) {

                performRuleSelected();

            }

        });

        this.txtTolerance.setText(String.valueOf(this.plan.getTolerance()));

        this.txtTolerance.getDocument().addDocumentListener(new DocumentListener() {

            @Override

            public void insertUpdate(DocumentEvent e) {

                validateData();

            }

            @Override

            public void removeUpdate(DocumentEvent e) {

                validateData();

            }

            @Override

            public void changedUpdate(DocumentEvent e) {

                validateData();

            }

        });

        this.setOkButtonEnabled(false);

        this.cboRule.setSelectedIndex(-1);

        this.cboRule.setEnabled(false);

        this.cboDataSet2.setEnabled(false);

        this.cboDataSet2.setSelectedItem(-1);

        this.setPreferredSize(new Dimension(650, 200));

        this.translate();

    }

    public void setDialog(Dialog dialog) {

        this.dialog = dialog;

    }

    private void setOkButtonEnabled(boolean enabled) {

        if (this.dialog == null) {

            return;

        }

        this.dialog.setButtonEnabled(WindowManager_v2.BUTTONS_OK, enabled);

    }

    private void translate() {

        ToolsSwingManager tsm = ToolsSwingLocator.getToolsSwingManager();

        tsm.translate(this.lblDataSet1);

        tsm.translate(this.lblDataSet2);

//        tsm.translate(this.lblLabelDescription);

        tsm.translate(this.lblRule);

        tsm.translate(this.lblTolerance);

    }

    private void validateData() {

        try {

            double x = Double.parseDouble(this.txtTolerance.getText());

        } catch (Exception ex) {

            this.setOkButtonEnabled(false);

            return;

        }

        TopologyDataSet dataSet = (TopologyDataSet) this.cboDataSet1.getSelectedItem();

        if (dataSet == null) {

            this.setOkButtonEnabled(false);

            return;

        }

        TopologyRuleFactory ruleFactory = (TopologyRuleFactory) this.cboRule.getSelectedItem();

        if (ruleFactory == null) {

            this.setOkButtonEnabled(false);

            return;

        }

        this.setOkButtonEnabled(true);

    }

    private void performDataSet1Selected() {

        TopologyDataSet dataSet = (TopologyDataSet) this.cboDataSet1.getSelectedItem();

        if (dataSet == null) {

            this.setOkButtonEnabled(false);

            this.cboRule.setSelectedIndex(-1);

            this.cboRule.setEnabled(false);

            this.cboDataSet2.setEnabled(false);

            this.cboDataSet2.setSelectedItem(-1);

            return;

        }

        TopologyManager manager = TopologyLocator.getTopologyManager();

        DefaultComboBoxModel<TopologyRuleFactory> model1 = new DefaultComboBoxModel<>();

        for (TopologyRuleFactory ruleFactory : manager.getRuleFactories(dataSet)) {

            model1.addElement(ruleFactory);

        }

        this.cboRule.setModel(model1);

        this.cboRule.setSelectedIndex(-1);

        this.cboRule.setEnabled(true);

    }

    private void performRuleSelected() {

        TopologyRuleFactory ruleFactory = (TopologyRuleFactory) this.cboRule.getSelectedItem();

        if (ruleFactory == null) {

            this.setOkButtonEnabled(false);

            this.cboDataSet2.setEnabled(false);

            this.cboDataSet2.setSelectedItem(-1);

            return;

        }

        DefaultComboBoxModel<TopologyDataSet> model2 = new DefaultComboBoxModel<>();

        if (ruleFactory.hasSecondaryDataSet()) {

            for (TopologyDataSet dataSet : this.plan.getSecondaryDataSets(ruleFactory)) {

                model2.addElement(dataSet);

            }

        }

        if (model2.getSize() == 0) {

            this.cboDataSet2.setEnabled(false);

        } else {

            this.cboDataSet2.setEnabled(true);

        }

        this.cboDataSet2.setModel(model2);

        this.cboDataSet2.setSelectedItem(-1);

        StringBuilder html = new StringBuilder();

        html.append("<html>\n");

        html.append(ruleFactory.getDescription().replace("\n", "<br>")).append("<br>\n");

        html.append("</html>\n");

        this.txtDescription.setContentType("text/html");

        this.txtDescription.setText(html.toString());

        this.txtDescription.setCaretPosition(0);

        this.validateData();

    }

    public TopologyRule getRule() {

        TopologyDataSet dataSet1 = (TopologyDataSet) this.cboDataSet1.getSelectedItem();

        TopologyRuleFactory ruleFactory = (TopologyRuleFactory) this.cboRule.getSelectedItem();

        if (dataSet1 == null || ruleFactory == null) {

            return null;

        }

        TopologyDataSet dataSet2 = (TopologyDataSet) this.cboDataSet2.getSelectedItem();

        double tolerance = this.plan.getTolerance();

        try {

            tolerance = Double.parseDouble(this.txtTolerance.getText());

        } catch (Exception ex) {

        }

        TopologyRule rule;

        if( dataSet2==null ) {

            rule = ruleFactory.createRule(plan, dataSet1.getName(), null, tolerance);

        } else {

            rule = ruleFactory.createRule(plan, dataSet1.getName(), dataSet2.getName(), tolerance);

        }

        return rule;

    }

}