/*
* Copyright 2010 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.guvnor.client.decisiontable;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.drools.guvnor.client.common.FormStylePopup;
import org.drools.guvnor.client.common.ImageButton;
import org.drools.guvnor.client.common.InfoPopup;
import org.drools.guvnor.client.common.SmallLabel;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.modeldriven.HumanReadable;
import org.drools.guvnor.client.resources.Images;
import org.drools.ide.common.client.modeldriven.FieldAccessorsAndMutators;
import org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine;
import org.drools.ide.common.client.modeldriven.brl.BaseSingleFieldConstraint;
import org.drools.ide.common.client.modeldriven.dt.ConditionCol;
import org.drools.ide.common.client.modeldriven.dt.DTColumnConfig;
import org.drools.ide.common.client.modeldriven.dt.GuidedDecisionTable;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
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.CheckBox;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.TextBox;
/**
* This is a configuration editor for a column in a the guided decision table.
* @author Michael Neale
*
*/
public class GuidedDTColumnConfig extends FormStylePopup {
private Constants constants = ((Constants) GWT.create( Constants.class ));
private static Images images = (Images) GWT.create( Images.class );
private GuidedDecisionTable dt;
private SuggestionCompletionEngine sce;
private ConditionCol editingCol;
private SmallLabel patternLabel = new SmallLabel();
private TextBox fieldLabel = getFieldLabel();
private SmallLabel operatorLabel = new SmallLabel();
private InfoPopup fieldLabelInterpolationInfo = getPredicateHint();
private InfoPopup getPredicateHint() {
return new InfoPopup( constants.Predicates(),
constants.PredicatesInfo() );
}
/**
* Pass in a null col and it will create a new one.
*/
public GuidedDTColumnConfig(SuggestionCompletionEngine sce,
final GuidedDecisionTable dt,
final Command refreshGrid,
final ConditionCol col,
final boolean isNew) {
super();
this.setModal( false );
this.dt = dt;
this.sce = sce;
this.editingCol = new ConditionCol();
editingCol.setBoundName( col.getBoundName() );
editingCol.setConstraintValueType( col.getConstraintValueType() );
editingCol.setFactField( col.getFactField() );
editingCol.setFactType( col.getFactType() );
editingCol.setHeader( col.getHeader() );
editingCol.setOperator( col.getOperator() );
editingCol.setValueList( col.getValueList() );
editingCol.setDefaultValue( col.getDefaultValue() );
editingCol.setHideColumn( col.isHideColumn() );
setTitle( constants.ConditionColumnConfiguration() );
HorizontalPanel pattern = new HorizontalPanel();
pattern.add( patternLabel );
doPatternLabel();
Image changePattern = new ImageButton( images.edit(),
constants.ChooseAnExistingPatternThatThisColumnAddsTo(),
new ClickHandler() {
public void onClick(ClickEvent w) {
showChangePattern( w );
}
} );
pattern.add( changePattern );
addAttribute( constants.Pattern(),
pattern );
//now a radio button with the type
RadioButton literal = new RadioButton( "constraintValueType",
constants.LiteralValue() );//NON-NLS
RadioButton formula = new RadioButton( "constraintValueType",
constants.Formula() ); //NON-NLS
RadioButton predicate = new RadioButton( "constraintValueType",
constants.Predicate() ); //NON-NLS
HorizontalPanel valueTypes = new HorizontalPanel();
valueTypes.add( literal );
valueTypes.add( formula );
valueTypes.add( predicate );
addAttribute( constants.CalculationType(),
valueTypes );
switch ( editingCol.getConstraintValueType() ) {
case BaseSingleFieldConstraint.TYPE_LITERAL :
literal.setEnabled( true );
break;
case BaseSingleFieldConstraint.TYPE_RET_VALUE :
formula.setEnabled( true );
break;
case BaseSingleFieldConstraint.TYPE_PREDICATE :
predicate.setEnabled( true );
}
literal.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
applyConsTypeChange( BaseSingleFieldConstraint.TYPE_LITERAL );
}
} );
formula.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
applyConsTypeChange( BaseSingleFieldConstraint.TYPE_RET_VALUE );
}
} );
predicate.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
applyConsTypeChange( BaseSingleFieldConstraint.TYPE_PREDICATE );
}
} );
HorizontalPanel field = new HorizontalPanel();
field.add( fieldLabel );
field.add( fieldLabelInterpolationInfo );
Image editField = new ImageButton( images.edit(),
constants.EditTheFieldThatThisColumnOperatesOn(),
new ClickHandler() {
public void onClick(ClickEvent w) {
showFieldChange();
}
} );
field.add( editField );
addAttribute( constants.Field(),
field );
doFieldLabel();
HorizontalPanel operator = new HorizontalPanel();
operator.add( operatorLabel );
Image editOp = new ImageButton( images.edit(),
constants.EditTheOperatorThatIsUsedToCompareDataWithThisField(),
new ClickHandler() {
public void onClick(ClickEvent w) {
showOperatorChange();
}
} );
operator.add( editOp );
addAttribute( constants.Operator(),
operator );
doOperatorLabel();
final TextBox valueList = new TextBox();
valueList.setText( editingCol.getValueList() );
valueList.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
editingCol.setValueList( valueList.getText() );
}
} );
HorizontalPanel vl = new HorizontalPanel();
vl.add( valueList );
vl.add( new InfoPopup( constants.ValueList(),
constants.ValueListsExplanation() ) );
addAttribute( constants.optionalValueList(),
vl );
final TextBox header = new TextBox();
header.setText( col.getHeader() );
header.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
editingCol.setHeader( header.getText() );
}
} );
addAttribute( constants.ColumnHeaderDescription(),
header );
addAttribute( constants.DefaultValue(),
getDefaultEditor( editingCol ) );
Button apply = new Button( constants.ApplyChanges() );
apply.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
if ( null == editingCol.getHeader() || "".equals( editingCol.getHeader() ) ) {
Window.alert( constants.YouMustEnterAColumnHeaderValueDescription() );
return;
}
if ( editingCol.getConstraintValueType() != BaseSingleFieldConstraint.TYPE_PREDICATE ) {
if ( null == editingCol.getFactField() || "".equals( editingCol.getFactField() ) ) {
Window.alert( constants.PleaseSelectOrEnterField() );
return;
}
if ( null == editingCol.getOperator() || "".equals( editingCol.getOperator() ) ) {
// Operator field optional
Window.alert( constants.NotifyNoSelectedOperator() );
}
}
if ( isNew ) {
if ( !unique( editingCol.getHeader() ) ) {
Window.alert( constants.ThatColumnNameIsAlreadyInUsePleasePickAnother() );
return;
}
dt.getConditionCols().add( editingCol );
} else {
if ( !col.getHeader().equals( editingCol.getHeader() ) ) {
if ( !unique( editingCol.getHeader() ) ) {
Window.alert( constants.ThatColumnNameIsAlreadyInUsePleasePickAnother() );
return;
}
}
col.setBoundName( editingCol.getBoundName() );
col.setConstraintValueType( editingCol.getConstraintValueType() );
col.setFactField( editingCol.getFactField() );
col.setFactType( editingCol.getFactType() );
col.setHeader( editingCol.getHeader() );
col.setOperator( editingCol.getOperator() );
col.setValueList( editingCol.getValueList() );
col.setDefaultValue( editingCol.getDefaultValue() );
col.setHideColumn( editingCol.isHideColumn() );
}
refreshGrid.execute();
hide();
}
} );
addAttribute( "",
apply );
}
/**
* An editor for setting the default value.
*/
public static HorizontalPanel getDefaultEditor(final DTColumnConfig editingCol) {
final TextBox defaultValue = new TextBox();
defaultValue.setText( editingCol.getDefaultValue() );
final CheckBox hide = new CheckBox( ((Constants) GWT.create( Constants.class )).HideThisColumn() );
hide.setEnabled( editingCol.isHideColumn() );
hide.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent sender) {
editingCol.setHideColumn( hide.isEnabled() );
}
} );
defaultValue.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
editingCol.setDefaultValue( defaultValue.getText() );
}
} );
HorizontalPanel hp = new HorizontalPanel();
hp.add( defaultValue );
hp.add( hide );
return hp;
}
private boolean unique(String header) {
for ( ConditionCol o : dt.getConditionCols() ) {
if ( o.getHeader().equals( header ) ) return false;
}
return true;
}
private TextBox getFieldLabel() {
final TextBox box = new TextBox();
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
editingCol.setFactField( box.getText() );
}
} );
return box;
}
private void applyConsTypeChange(int newType) {
editingCol.setConstraintValueType( newType );
doFieldLabel();
doOperatorLabel();
}
private void doOperatorLabel() {
if ( editingCol.getConstraintValueType() == BaseSingleFieldConstraint.TYPE_PREDICATE ) {
operatorLabel.setText( constants.notNeededForPredicate() );
} else if ( nil( editingCol.getFactType() ) ) {
operatorLabel.setText( constants.pleaseSelectAPatternFirst() );
} else if ( nil( editingCol.getFactField() ) ) {
operatorLabel.setText( constants.pleaseChooseAFieldFirst() );
} else if ( nil( editingCol.getOperator() ) ) {
operatorLabel.setText( constants.pleaseSelectAField() );
} else {
operatorLabel.setText( HumanReadable.getOperatorDisplayName( editingCol.getOperator() ) );
}
}
private void showOperatorChange() {
final FormStylePopup pop = new FormStylePopup();
pop.setTitle( constants.SetTheOperator() );
pop.setModal( false );
String[] ops = this.sce.getOperatorCompletions( editingCol.getFactType(),
editingCol.getFactField() );
final ListBox box = new ListBox();
for ( int i = 0; i < ops.length; i++ ) {
box.addItem( HumanReadable.getOperatorDisplayName( ops[i] ),
ops[i] );
}
if ( BaseSingleFieldConstraint.TYPE_LITERAL == this.editingCol.getConstraintValueType() ) {
box.addItem( HumanReadable.getOperatorDisplayName( "in" ),
"in" );
}
box.addItem( constants.noOperator(),
"" );
pop.addAttribute( constants.Operator(),
box );
Button b = new Button( constants.OK() );
pop.addAttribute( "",
b );
b.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
editingCol.setOperator( box.getValue( box.getSelectedIndex() ) );
doOperatorLabel();
pop.hide();
}
} );
pop.show();
}
private void doFieldLabel() {
if ( editingCol.getConstraintValueType() == BaseSingleFieldConstraint.TYPE_PREDICATE ) {
fieldLabel.setText( constants.notNeededForPredicate() );
fieldLabelInterpolationInfo.setVisible( true );
} else if ( nil( editingCol.getFactType() ) ) {
fieldLabel.setText( constants.pleaseSelectAPatternFirst() );
fieldLabelInterpolationInfo.setVisible( false );
} else if ( nil( editingCol.getFactField() ) ) {
fieldLabel.setText( constants.pleaseSelectAField() );
fieldLabelInterpolationInfo.setVisible( false );
} else {
fieldLabel.setText( this.editingCol.getFactField() );
}
}
private boolean nil(String s) {
return s == null || s.equals( "" );
}
protected void showFieldChange() {
final FormStylePopup pop = new FormStylePopup();
pop.setModal( false );
String[] fields = this.sce.getFieldCompletions( FieldAccessorsAndMutators.ACCESSOR,
this.editingCol.getFactType() );
final ListBox box = new ListBox();
for ( int i = 0; i < fields.length; i++ ) {
box.addItem( fields[i] );
}
pop.addAttribute( constants.Field(),
box );
Button b = new Button( constants.OK() );
pop.addAttribute( "",
b );
b.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
editingCol.setFactField( box.getItemText( box.getSelectedIndex() ) );
doFieldLabel();
doOperatorLabel();
pop.hide();
}
} );
pop.show();
}
private void doPatternLabel() {
if ( this.editingCol.getFactType() != null ) {
this.patternLabel.setText( this.editingCol.getFactType() + " [" + editingCol.getBoundName() + "]" );
}
doFieldLabel();
doOperatorLabel();
}
protected void showChangePattern(ClickEvent w) {
final ListBox pats = this.loadPatterns();
if ( pats.getItemCount() == 0 ) {
showNewPatternDialog();
return;
}
final FormStylePopup pop = new FormStylePopup();
Button ok = new Button( constants.OK() );
HorizontalPanel hp = new HorizontalPanel();
hp.add( pats );
hp.add( ok );
pop.addAttribute( constants.ChooseExistingPatternToAddColumnTo(),
hp );
pop.addAttribute( "",
new HTML( constants.ORwithEmphasis() ) );
Button createPattern = new Button( constants.CreateNewFactPattern() );
createPattern.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
pop.hide();
showNewPatternDialog();
}
} );
pop.addAttribute( "",
createPattern );
ok.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
String[] val = pats.getValue( pats.getSelectedIndex() ).split( "\\s" );
editingCol.setFactType( val[0] );
editingCol.setBoundName( val[1] );
doPatternLabel();
pop.hide();
}
} );
pop.show();
}
protected void showNewPatternDialog() {
final FormStylePopup pop = new FormStylePopup();
pop.setTitle( constants.CreateANewFactPattern() );
final ListBox types = new ListBox();
for ( int i = 0; i < sce.getFactTypes().length; i++ ) {
types.addItem( sce.getFactTypes()[i] );
}
pop.addAttribute( constants.FactType(),
types );
final TextBox binding = new TextBox();
binding.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
binding.setText( binding.getText().replace( " ",
"" ) );
}
} );
pop.addAttribute( constants.name(),
binding );
Button ok = new Button( constants.OK() );
ok.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent w) {
String ft = types.getItemText( types.getSelectedIndex() );
String fn = binding.getText();
if ( fn.equals( "" ) ) {
Window.alert( constants.PleaseEnterANameForFact() );
return;
} else if ( fn.equals( ft ) ) {
Window.alert( constants.PleaseEnterANameThatIsNotTheSameAsTheFactType() );
return;
} else if ( !checkUnique( fn,
dt.getConditionCols() ) ) {
Window.alert( constants.PleaseEnterANameThatIsNotAlreadyUsedByAnotherPattern() );
return;
}
editingCol.setBoundName( fn );
editingCol.setFactType( ft );
doPatternLabel();
pop.hide();
}
} );
pop.addAttribute( "",
ok );
pop.show();
}
private boolean checkUnique(String fn,
List<ConditionCol> conditionCols) {
for ( ConditionCol c : conditionCols ) {
if ( c.getBoundName().equals( fn ) ) return false;
}
return true;
}
private ListBox loadPatterns() {
Set<String> vars = new HashSet<String>();
ListBox patterns = new ListBox();
for ( int i = 0; i < dt.getConditionCols().size(); i++ ) {
ConditionCol c = dt.getConditionCols().get( i );
if ( !vars.contains( c.getBoundName() ) ) {
patterns.addItem( c.getFactType() + " [" + c.getBoundName() + "]",
c.getFactType() + " " + c.getBoundName() );
vars.add( c.getBoundName() );
}
}
return patterns;
}
}