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

package org.gvsig.tools.swing.api.pickercontroller;

import javax.swing.ImageIcon;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.DataType;

import org.gvsig.tools.dataTypes.DataTypesManager;

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

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

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

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

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 *

 * @author jjdelcerro

 */

public abstract class AbstractPickerController<T> implements PickerController<T> {

    protected static final Logger LOG = LoggerFactory.getLogger(AbstractPickerController.class);

    protected ChangeListenerHelper changeListenerHelper;

    private boolean editable;

    public AbstractPickerController() {

        this.changeListenerHelper = ToolsSwingLocator.getToolsSwingManager()

                .createChangeListenerHelper();

        this.editable = true;

    }

    @Override

    public void addChangeListener(ChangeListener listener) {

        this.changeListenerHelper.addChangeListener(listener);

    }

    @Override

    public ChangeListener[] getChangeListeners() {

        return this.changeListenerHelper.getChangeListeners();

    }

    @Override

    public void removeChangeListener(ChangeListener listener) {

        this.changeListenerHelper.removeChangeListener(listener);

    }

    @Override

    public void removeAllChangeListener() {

        this.changeListenerHelper.removeAllChangeListener();

    }

    @Override

    public boolean hasChangeListeners() {

        return this.changeListenerHelper.hasChangeListeners();

    }

    protected void fireChangeEvent() {

        this.changeListenerHelper.fireEvent();

    }

    protected void fireChangeEvent(ChangeEvent event) {

        this.changeListenerHelper.fireEvent(event);

    }

    protected Object coerce(int type, Object value, Object defaultValue) {

        DataTypesManager manager = ToolsLocator.getDataTypesManager();

        DataType dataType = manager.get(type);

        try {

            Object v = dataType.coerce(value);

            return v;

        } catch (CoercionException ex) {

            String s = (value==null)? "null":value.toString();

            LOG.warn("Can't coerce value ("+s+") to "+dataType.getName()+".", ex);

            return defaultValue;

        }

    }

    @Override

    public void setEditable(boolean editable) {

        this.editable = editable;

    }

    @Override

    public boolean isEditable() {

        return this.editable;

    }

    @Override

    public boolean isValid() {

        return true;

    }

    @Override

    public boolean isEmpty() {

        return false;

    }

    protected ImageIcon getIcon(String name) {

        IconThemeManager iconThemeManager = ToolsSwingLocator.getIconThemeManager();

        IconTheme theme = iconThemeManager.getCurrent();

        ImageIcon icon = theme.get(name);

        return icon;

    }

}