/*
* Copyright 2012 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.workbench.screens.factmodel.client.editor;
import java.util.Collection;
import java.util.List;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.regexp.shared.RegExp;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import org.drools.workbench.screens.factmodel.client.resources.i18n.FactModelConstants;
import org.drools.workbench.screens.factmodel.model.AnnotationMetaModel;
import org.uberfire.client.common.FormStylePopup;
/**
* A pop-up editor for a single Fact annotation
*/
public class AnnotationEditorPopup {
// A valid Annotation name
private static final RegExp VALID_NAME = RegExp.compile( "^[a-zA-Z][a-zA-Z\\d]*$" );
private final AnnotationMetaModel annotation;
private final List<AnnotationMetaModel> annotations;
private final TextBox txtName = new TextBox();
private final TextBox txtKey = new TextBox();
private final TextBox txtValue = new TextBox();
private Command okCommand;
public AnnotationEditorPopup( List<AnnotationMetaModel> annotations ) {
this( new AnnotationMetaModel(),
annotations );
}
public AnnotationEditorPopup( AnnotationMetaModel annotation,
List<AnnotationMetaModel> annotations ) {
this.annotation = annotation;
this.annotations = annotations;
}
public AnnotationMetaModel getAnnotation() {
return annotation;
}
public void setOkCommand( Command okCommand ) {
this.okCommand = okCommand;
}
public void show() {
final FormStylePopup pop = new FormStylePopup();
VerticalPanel vp = new VerticalPanel();
Grid g = new Grid( 2,
3 );
txtName.addKeyPressHandler( new NoSpaceKeyPressHandler() );
txtKey.addKeyPressHandler( new NoSpaceKeyPressHandler() );
g.setWidget( 0,
0,
new HTML( "<b>Name</b>" ) );
g.setWidget( 1,
0,
txtName );
g.setWidget( 0,
1,
new HTML( "<b>Key</b>" ) );
g.setWidget( 1,
1,
txtKey );
g.setWidget( 0,
2,
new HTML( "<b>Value</b>" ) );
g.setWidget( 1,
2,
txtValue );
setControlValues( annotation );
Button btnOK = new Button( FactModelConstants.INSTANCE.OK() );
btnOK.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
String name = txtName.getText();
if ( !isNameValid( name ) ) {
Window.alert( FactModelConstants.INSTANCE.InvalidModelName( name ) );
return;
}
if ( doesTheNameExist( name ) ) {
Window.alert( FactModelConstants.INSTANCE.NameTakenForModel( name ) );
return;
}
if ( annotationAlreadyHasAName() && annotationNameHasChanged( name ) ) {
if ( isTheUserSureHeWantsToChangeTheName() ) {
setNameAndClose();
}
} else {
setNameAndClose();
}
}
private boolean isNameValid( String name ) {
if ( name == null || "".equals( name ) ) {
return false;
}
return VALID_NAME.test( name );
}
private boolean annotationAlreadyHasAName() {
return annotation.name != null && annotation.name.length() > 0;
}
private boolean annotationNameHasChanged( String name ) {
return !name.equals( annotation.name );
}
private void setNameAndClose() {
String name = txtName.getText();
String key = txtKey.getText();
if ( key == null || key.length() == 0 ) {
//This is the default annotation key constructed by AnnotationDescr when none is provided
//e.g. @smurf( Pupa ) -> @smurf( value = Pupa ). We explicitly set it to keep the user
//experience consistent between what they enter and what is parsed.
key = "value";
}
String value = txtValue.getText();
annotation.name = name;
annotation.getValues().clear();
annotation.getValues().put( key,
value );
okCommand.execute();
pop.hide();
}
private boolean isTheUserSureHeWantsToChangeTheName() {
return Window.confirm( FactModelConstants.INSTANCE.ModelNameChangeWarning() );
}
private boolean doesTheNameExist( String name ) {
for ( AnnotationMetaModel a : annotations ) {
if ( a != annotation ) {
if ( a.name.equals( name ) ) {
return true;
}
}
}
return false;
}
} );
vp.add( g );
vp.add( btnOK );
pop.addRow( vp );
pop.show();
}
//This is a simplified annotation editor and thus we only
//allow creation of a single key-value pair. The underlying
//parser implementation allows for multiple key-value pairs
//for the same annotation but it's implementation is incomplete.
private void setControlValues( AnnotationMetaModel annotation ) {
String name = ( annotation.name == null ? "" : annotation.name );
String key = getFirstEntry( annotation.getValues().keySet() );
String value = getFirstEntry( annotation.getValues().values() );
txtName.setText( name );
txtKey.setText( key );
txtValue.setText( value );
}
private String getFirstEntry( Collection<String> values ) {
if ( values.isEmpty() ) {
return "";
}
return values.iterator().next();
}
}