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

package org.gvsig.tools.dynform.impl.dynformfield;

import java.awt.BorderLayout;

import java.awt.Color;

import java.util.HashSet;

import java.util.Iterator;

import java.util.Set;

import javax.swing.JComponent;

import javax.swing.JLabel;

import javax.swing.JPanel;

import org.gvsig.tools.dynform.api.DynFormFieldDefinition;

import org.gvsig.tools.dynform.api.DynFormManager;

import org.gvsig.tools.dynform.api.JDynFormField;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.service.Manager;

import org.gvsig.tools.service.spi.ServiceManager;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

@SuppressWarnings({"rawtypes", "unchecked"})

public abstract class AbstractJDynFormField implements JDynFormField {

        protected static final Logger logger = LoggerFactory

                        .getLogger(AbstractJDynFormField.class);

        private DynFormManager manager = null;

        private DynFormFieldDefinition definition = null;

        private JLabel jlabel = null;

        private JPanel jlabelpanel = null;

        private Set listeners = null;

        private ProblemIndicator problemIndicator = null;

        protected DynObject parameters = null;

        protected JComponent contents = null;

        private boolean readOnly = false;

        public AbstractJDynFormField(DynObject parameters,

                        ServiceManager serviceManager) {

                this.parameters = parameters;

                this.manager = (DynFormManager) serviceManager;

                this.definition = this.getDefinition();

                this.listeners = new HashSet();

                this.readOnly = this.definition.isReadOnly();

                this.problemIndicator = new ProblemIndicator(this);

        }

        public abstract void initComponent();

        public abstract Object getAssignedValue();

        public Object getParameterValue() {

                return this.parameters.getDynValue(DynFormManager.FIELD_VALUE);

        }

        public JComponent asJComponent() {

                if (this.contents == null) {

                        this.initComponent();

                        if( this.readOnly ) {

                                this.setReadOnly(readOnly);

                        }

                }

                return this.contents;

        }

        public String getName() {

                return this.definition.getName();

        }

        public String getLabel() {

                return definition.getLabel();

        }

        public JComponent getJLabel() {

                if (this.jlabel == null) {

                        this.jlabel = new JLabel(this.getLabel(), JLabel.TRAILING);

                        this.jlabel.setLabelFor(this.contents);

                        if( this.getDefinition().isMandatory() ) {

                                this.jlabel.setForeground(Color.red.darker());

                        }

                        this.jlabelpanel = new JPanel();

                        this.jlabelpanel.setLayout(new BorderLayout());

                        this.jlabelpanel.add(jlabel,BorderLayout.CENTER);

                        this.jlabelpanel.add(problemIndicator.asJComponent(), BorderLayout.LINE_END);

                }

                return this.jlabelpanel;

        }

        public DynFormFieldDefinition getDefinition() {

                return (DynFormFieldDefinition) this.parameters

                                .getDynValue(DynFormManager.FIELD_FIELDDEFINITION);

        }

        public Manager getManager() {

                return this.manager;

        }

        public void addListener(JDynFormFieldListener listener) {

                this.listeners.add(listener);

        }

        public void removeListener(JDynFormFieldListener listener) {

                this.listeners.remove(listener);

        }

        protected void fireFieldChangedEvent() {

                Iterator it = this.listeners.iterator();

                while (it.hasNext()) {

                        JDynFormFieldListener listener = (JDynFormFieldListener) it.next();

                        try {

                                listener.fieldChanged(this);

                        } catch (Exception ex) {

                                logger.info("Error calling listener " + listener.toString()

                                                + "(" + listener.getClass().getName() + ") from "

                                                + this.toString() + "(" + this.getClass().getName()

                                                + ").", ex);

                        }

                }

        }

        protected void fireFieldEnterEvent() {

                Iterator it = this.listeners.iterator();

                while (it.hasNext()) {

                        JDynFormFieldListener listener = (JDynFormFieldListener) it.next();

                        try {

                                listener.fieldEnter(this);

                        } catch (Exception ex) {

                                logger.info("Error calling listener " + listener.toString()

                                                + "(" + listener.getClass().getName() + ") from "

                                                + this.toString() + "(" + this.getClass().getName()

                                                + ").", ex);

                        }

                }

        }

        protected void fireFieldExitEvent() {

                Iterator it = this.listeners.iterator();

                while (it.hasNext()) {

                        JDynFormFieldListener listener = (JDynFormFieldListener) it.next();

                        try {

                                listener.fieldExit(this);

                        } catch (Exception ex) {

                                logger.info("Error calling listener " + listener.toString()

                                                + "(" + listener.getClass().getName() + ") from "

                                                + this.toString() + "(" + this.getClass().getName()

                                                + ").", ex);

                        }

                }

        }

        protected void fireMessageEvent(String message) {

                Iterator it = this.listeners.iterator();

                while (it.hasNext()) {

                        JDynFormFieldListener listener = (JDynFormFieldListener) it.next();

                        try {

                                listener.message(this, message);

                        } catch (Exception ex) {

                                logger.info("Error calling listener " + listener.toString()

                                                + "(" + listener.getClass().getName() + ") from "

                                                + this.toString() + "(" + this.getClass().getName()

                                                + ").", ex);

                        }

                }

        }

        public boolean isReadOnly() {

                return this.readOnly ;

        }

        public void setReadOnly(boolean readonly) {

                // FIXME: Implememtacion por defecto, sobreescribirla en las subclases

                // segun convenga para cada componente.

                this.readOnly = readonly;

                if( this.contents != null ) {

                        this.contents.setEnabled(!readOnly);

                }

        }

        public ProblemIndicator problemIndicator() {

                return this.problemIndicator;

        }

        public class IllegalFieldValue extends RuntimeException {

                /**

                 * 

                 */

                private static final long serialVersionUID = -4409236610055983438L;

                public IllegalFieldValue(JDynFormField field, String message) {

                        super("The value of field '"+field.getLabel()+"' is not valid. " + message);

                }

        }

        public String toString() {

                return super.toString() + "{" + this.getName() + "}";

        }

        public boolean isModified() {

                try {

                        Object value = this.getValue();

                        if( value == null ) {

                                return value != this.getAssignedValue();

                        }

                        return ! value.equals(this.getAssignedValue());

                } catch(IllegalFieldValue ex) {

                        // Si es incorrecto el valor del campo decimos a capom que esta modificado.

                        return true;

                }

        }

}