Application: gvSIG desktop

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package org.gvsig.fmap.mapcontrol.swing.pickercontroller.impl;

import java.awt.Component;

import java.awt.Image;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.net.URL;

import javax.swing.DefaultComboBoxModel;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JTextField;

import javax.swing.JToggleButton;

import javax.swing.SwingConstants;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.tools.Behavior.Behavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MouseMovementBehavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MouseWheelBehavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MoveBehavior;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Events.MoveEvent;

import org.gvsig.fmap.mapcontrol.tools.Events.PointEvent;

import org.gvsig.fmap.mapcontrol.tools.Listeners.PanListener;

import org.gvsig.fmap.mapcontrol.tools.Listeners.PointListener;

import org.gvsig.tools.IllegalValueException;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.DataType;

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

import org.gvsig.tools.swing.api.documentfilters.DoubleDocumentFilter;

import org.gvsig.tools.swing.api.pickercontroller.AbstractPickerController;

import org.gvsig.tools.swing.icontheme.IconTheme;

import org.gvsig.tools.swing.icontheme.IconThemeManager;

/**

 *

 * @author jjdelcerro

 */

public class ScalePickerControllerImpl extends AbstractPickerController<Double>{

        public static void selfRegister() {

            IconThemeManager iconThemeManager = ToolsSwingLocator.getIconThemeManager();

            IconTheme theme = iconThemeManager.getCurrent();

            URL url = ScalePickerControllerImpl.class.getClassLoader().getResource("images/picker-scale-cursor-capture.png");

            if( url != null ) {

                ImageIcon icon = new ImageIcon(url);

                theme.registerDefault("mapcontrol", "picker", "picker-scale", "picker-scale-cursor-capture", icon, url);

            }

            url = ScalePickerControllerImpl.class.getClassLoader().getResource("images/picker-scale-capture.png");

            if( url != null ) {

                ImageIcon icon = new ImageIcon(url);

                theme.registerDefault("mapcontrol", "picker", "picker-scale", "picker-scale-capture", icon, url);

            }

            url = ScalePickerControllerImpl.class.getClassLoader().getResource("images/picker-scale-from-mapcontrol.png");

            if( url != null ) {

                ImageIcon icon = new ImageIcon(url);

                theme.registerDefault("mapcontrol", "picker", "picker-scale", "picker-scale-from-mapcontrol", icon, url);

            }

    }

    private class CaptureScaleListener implements PanListener,PointListener  {

        @Override

        public Image getImageCursor() {

            return captureCursor.getImage();

        }

        @Override

        public boolean cancelDrawing() {

            return false;

        }

        @Override

        public void move(MoveEvent event) throws BehaviorException {

            doSetScaleFromMapControlScale();

        }

        @Override

        public void point(PointEvent event) throws BehaviorException {

            doSetScaleFromMapControlScale();

        }

        @Override

        public void pointDoubleClick(PointEvent event) throws BehaviorException {

            doSetScaleFromMapControlScale();

        }

    }

    private final MapControl mapControl;

    private final JComboBox cboScale;

    private final JButton btnMapControlScale;

    private final JToggleButton btnCapture;

    private ImageIcon captureCursor;    

    private Behavior[] captureTool;

    private String previosTool;

    public ScalePickerControllerImpl(

            MapControl mapControl,

            JComboBox cboScale, 

            JButton btnMapControlScale, 

            final JToggleButton btnCapture

        ) {

        this.mapControl = mapControl;

        this.cboScale = cboScale;

        this.btnMapControlScale = btnMapControlScale;

        this.btnCapture = btnCapture;

        this.initComponents();      

    }

    private void initComponents() {

        this.captureCursor.setImage(this.getIcon("picker-scale-cursor-capture").getImage());

        this.btnCapture.setIcon(this.getIcon("picker-scale-capture"));

        this.btnMapControlScale.setIcon(this.getIcon("picker-scale-from-mapcontrol"));

        Component comboEditor = this.cboScale.getEditor().getEditorComponent();

        if( comboEditor instanceof JTextField ) {

            JTextField editor = (JTextField)comboEditor;

            editor.setHorizontalAlignment(SwingConstants.RIGHT);

            DoubleDocumentFilter.install(editor);

        }

        DefaultComboBoxModel<String> model = new DefaultComboBoxModel<>(new String[] {

            "1000", "2000", "5000", "10000", "25000", "50000", "100000",

            "200000", "500000", "1000000", "2000000", "5000000"

        });

        this.cboScale.setModel(model);

        this.cboScale.setSelectedItem("10000");

        if( this.mapControl==null ) {

            this.btnCapture.setEnabled(false);

            this.btnMapControlScale.setEnabled(false);

        } else {

            this.btnCapture.setEnabled(true);

            this.btnMapControlScale.setEnabled(true);

            CaptureScaleListener captureListener = new CaptureScaleListener();

            this.captureTool = new Behavior[] {

                new MouseMovementBehavior(captureListener),

                new MouseWheelBehavior(),

                new MoveBehavior(captureListener, Behavior.BUTTON_MIDDLE)

            };

            this.mapControl.addBehavior("picker-scale-capture", this.captureTool);

            this.previosTool = this.mapControl.getCurrentTool();

            doSetScaleFromMapControlScale();

        }

        if( this.btnMapControlScale!=null ) {

            this.btnMapControlScale.addActionListener(new ActionListener() {

                @Override

                public void actionPerformed(ActionEvent e) {

                    doSetScaleFromMapControlScale();

                }

            });

        }

        this.btnCapture.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                doCaptureScale(btnCapture.isSelected());

            }

        });

    }

    protected void doSetScaleFromMapControlScale() {

        if( !this.isEditable() ) {

            return;

        }

        try {

            double theScale = this.mapControl.getMapContext().getScaleView();

            this.set(theScale);

        } catch (Exception ex) {

            LOG.warn("Can't get scale from mapcontrol.", ex);

        }

    }

    protected void doCaptureScale(boolean enabled) {

        if( !this.isEditable() ) {

            return;

        }

        if( enabled ) {

            this.previosTool = this.mapControl.getCurrentTool();

            this.mapControl.setTool("picker-scale-capture");

        } else {

            this.mapControl.setTool(this.previosTool);

        }

    }

    @Override

    @SuppressWarnings("UseSpecificCatch")

    public boolean isValid() {

        String value = (String) this.cboScale.getSelectedItem();

        if ( value == null ) {

            return true;

        }

        try {

            Double.parseDouble(value);

            return true;

        } catch(Exception ex) {

            return false;

        }

    }

    @Override

    public boolean isEmpty() {

        String value = (String) this.cboScale.getSelectedItem();

        return ( value == null );

    }

    @Override

    @SuppressWarnings("UseSpecificCatch")

    public Double get() {

        String value = (String) this.cboScale.getSelectedItem();

        if ( value == null ) {

            return null;

        }

        double scale;

        try {

            scale = Double.parseDouble(value);

        } catch(Exception ex) {

            throw new IllegalValueException(ex);

        }

        return scale;

    }

    @Override

    public void set(Double scale) {

        this.cboScale.setSelectedItem(String.format("%f",scale));

    }

    @Override

    public void coerceAndSet(Object value) {

        DataType dataType = ToolsLocator.getDataTypesManager()

                .get(DataTypes.DOUBLE);

        try {

            this.set((Double) dataType.coerce(value));

        } catch (CoercionException ex) {

            LOG.warn("Can't set value.", ex);

        }

    }

    @Override

    public void setEnabled(boolean enabled) {

        this.cboScale.setEnabled(enabled);

        if( this.mapControl!=null ) {

            this.btnCapture.setEnabled(enabled);

            this.btnMapControlScale.setEnabled(enabled);

        }

    }

    @Override

    public boolean isEnabled() {

        return this.cboScale.isEnabled();

    }

    @Override

    public void setEditable(boolean editable) {

        super.setEditable(editable);

        this.cboScale.setEditable(editable);

    }

}