/*
* 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.asseteditor.drools.modeldriven.ui.factPattern;
import org.drools.guvnor.client.asseteditor.drools.modeldriven.ui.BindingTextBox;
import org.drools.guvnor.client.asseteditor.drools.modeldriven.ui.RuleModeller;
import org.drools.guvnor.client.common.FormStylePopup;
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.resources.DroolsGuvnorImages;
import org.drools.ide.common.client.modeldriven.FieldAccessorsAndMutators;
import org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine;
import org.drools.ide.common.client.modeldriven.brl.CompositeFieldConstraint;
import org.drools.ide.common.client.modeldriven.brl.ExpressionFormLine;
import org.drools.ide.common.client.modeldriven.brl.ExpressionUnboundFact;
import org.drools.ide.common.client.modeldriven.brl.FactPattern;
import org.drools.ide.common.client.modeldriven.brl.HasConstraints;
import org.drools.ide.common.client.modeldriven.brl.SingleFieldConstraint;
import org.drools.ide.common.client.modeldriven.brl.SingleFieldConstraintEBLeftSide;
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.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
public class PopupCreator {
private FactPattern pattern;
private SuggestionCompletionEngine completions;
private RuleModeller modeller;
private boolean bindable;
/**
* Returns the pattern.
*/
public FactPattern getPattern() {
return pattern;
}
/**
* @param pattern
* the pattern to set
*/
public void setPattern(FactPattern pattern) {
this.pattern = pattern;
}
/**
* Returns the completions.
*/
public SuggestionCompletionEngine getCompletions() {
return completions;
}
/**
* @param completions
* the completions to set
*/
public void setCompletions(SuggestionCompletionEngine completions) {
this.completions = completions;
}
/**
* Returns the modeller.
*/
public RuleModeller getModeller() {
return modeller;
}
/**
* @param modeller
* the modeller to set
*/
public void setModeller(RuleModeller modeller) {
this.modeller = modeller;
}
/**
* Returns the bindable.
*/
public boolean isBindable() {
return bindable;
}
/**
* @param bindable
* the bindable to set
*/
public void setBindable(boolean bindable) {
this.bindable = bindable;
}
/**
* Display a little editor for field bindings.
*/
public void showBindFieldPopup(final Widget w,
final FactPattern fp,
final SingleFieldConstraint con,
String[] fields,
final PopupCreator popupCreator) {
final FormStylePopup popup = new FormStylePopup();
popup.setWidth( 500 + "px" );
final HorizontalPanel vn = new HorizontalPanel();
final TextBox varName = new BindingTextBox();
if ( con.getFieldBinding() != null ) {
varName.setText( con.getFieldBinding() );
}
final Button ok = new Button( Constants.INSTANCE.Set() );
vn.add( varName );
vn.add( ok );
ok.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
String var = varName.getText();
if ( modeller.isVariableNameUsed( var ) ) {
Window.alert( Constants.INSTANCE.TheVariableName0IsAlreadyTaken( var ) );
return;
}
con.setFieldBinding( var );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.BindTheFieldCalled0ToAVariable( con.getFieldName() ),
vn );
//Show the sub-field selector is there are applicable sub-fields
if ( hasApplicableFields( fields ) ) {
Button sub = new Button( Constants.INSTANCE.ShowSubFields() );
popup.addAttribute( Constants.INSTANCE.ApplyAConstraintToASubFieldOf0( con.getFieldName() ),
sub );
sub.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
popup.hide();
popupCreator.showPatternPopup( w,
fp,
con,
true );
}
} );
}
popup.show();
}
//Check if there are any fields other than "this"
private boolean hasApplicableFields(String[] fields) {
if ( fields == null || fields.length == 0 ) {
return false;
}
if ( fields.length > 1 ) {
return true;
}
if ( SuggestionCompletionEngine.TYPE_THIS.equals( fields[0] ) ) {
return false;
}
return true;
}
/**
* This shows a popup for adding fields to a composite
*/
public void showPatternPopupForComposite(Widget w,
final HasConstraints hasConstraints) {
final FormStylePopup popup = new FormStylePopup( DroolsGuvnorImages.INSTANCE.newexWiz(),
Constants.INSTANCE.AddFieldsToThisConstraint() );
final ListBox box = new ListBox();
box.addItem( "..." );
String[] fields = this.completions.getFieldCompletions( this.pattern.getFactType() );
for ( int i = 0; i < fields.length; i++ ) {
box.addItem( fields[i] );
}
box.setSelectedIndex( 0 );
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
String factType = pattern.getFactType();
String fieldName = box.getItemText( box.getSelectedIndex() );
String fieldType = getCompletions().getFieldType( factType,
fieldName );
hasConstraints.addConstraint( new SingleFieldConstraint( factType,
fieldName,
fieldType,
null ) );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.AddARestrictionOnAField(),
box );
final ListBox composites = new ListBox();
composites.addItem( "..." ); //NON-NLS
composites.addItem( Constants.INSTANCE.AllOfAnd(),
CompositeFieldConstraint.COMPOSITE_TYPE_AND );
composites.addItem( Constants.INSTANCE.AnyOfOr(),
CompositeFieldConstraint.COMPOSITE_TYPE_OR );
composites.setSelectedIndex( 0 );
composites.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
CompositeFieldConstraint comp = new CompositeFieldConstraint();
comp.compositeJunctionType = composites.getValue( composites.getSelectedIndex() );
hasConstraints.addConstraint( comp );
modeller.refreshWidget();
popup.hide();
}
} );
InfoPopup infoComp = new InfoPopup( Constants.INSTANCE.MultipleFieldConstraints(),
Constants.INSTANCE.MultipleConstraintsTip() );
HorizontalPanel horiz = new HorizontalPanel();
horiz.add( composites );
horiz.add( infoComp );
popup.addAttribute( Constants.INSTANCE.MultipleFieldConstraint(),
horiz );
//Include Expression Editor
popup.addRow( new SmallLabel( "<i>" + Constants.INSTANCE.AdvancedOptionsColon() + "</i>" ) );
Button ebBtn = new Button( Constants.INSTANCE.ExpressionEditor() );
ebBtn.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
SingleFieldConstraintEBLeftSide con = new SingleFieldConstraintEBLeftSide();
con.setConstraintValueType( SingleFieldConstraint.TYPE_UNDEFINED );
con.setExpressionLeftSide( new ExpressionFormLine( new ExpressionUnboundFact( pattern ) ) );
hasConstraints.addConstraint( con );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.ExpressionEditor(),
ebBtn );
popup.show();
}
/**
* This shows a popup allowing you to add field constraints to a pattern
* (its a popup).
*/
public void showPatternPopup(Widget w,
final FactPattern fp,
final SingleFieldConstraint con,
final boolean isNested) {
final String factType = getFactType( fp,
con );
String title = (con == null) ? Constants.INSTANCE.ModifyConstraintsFor0( fp.getFactType() ) : Constants.INSTANCE.AddSubFieldConstraint();
final FormStylePopup popup = new FormStylePopup( DroolsGuvnorImages.INSTANCE.newexWiz(),
title );
final ListBox box = new ListBox();
box.addItem( "..." );
String[] fields = this.completions.getFieldCompletions( FieldAccessorsAndMutators.ACCESSOR,
factType );
for ( int i = 0; i < fields.length; i++ ) {
//You can't use "this" in a nested accessor
if ( !isNested || !fields[i].equals( SuggestionCompletionEngine.TYPE_THIS ) ) {
box.addItem( fields[i] );
}
}
box.setSelectedIndex( 0 );
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
String fieldName = box.getItemText( box.getSelectedIndex() );
if ( "...".equals( fieldName ) ) {
return;
}
String fieldType = completions.getFieldType( factType,
fieldName );
fp.addConstraint( new SingleFieldConstraint( factType,
fieldName,
fieldType,
con ) );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.AddARestrictionOnAField(),
box );
final ListBox composites = new ListBox();
composites.addItem( "..." );
composites.addItem( Constants.INSTANCE.AllOfAnd(),
CompositeFieldConstraint.COMPOSITE_TYPE_AND );
composites.addItem( Constants.INSTANCE.AnyOfOr(),
CompositeFieldConstraint.COMPOSITE_TYPE_OR );
composites.setSelectedIndex( 0 );
composites.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
CompositeFieldConstraint comp = new CompositeFieldConstraint();
comp.compositeJunctionType = composites.getValue( composites.getSelectedIndex() );
fp.addConstraint( comp );
modeller.refreshWidget();
popup.hide();
}
} );
InfoPopup infoComp = new InfoPopup( Constants.INSTANCE.MultipleFieldConstraints(),
Constants.INSTANCE.MultipleConstraintsTip1() );
HorizontalPanel horiz = new HorizontalPanel();
horiz.add( composites );
horiz.add( infoComp );
if ( con == null ) {
popup.addAttribute( Constants.INSTANCE.MultipleFieldConstraint(),
horiz );
}
if ( con == null ) {
popup.addRow( new SmallLabel( "<i>" + Constants.INSTANCE.AdvancedOptionsColon() + "</i>" ) ); //NON-NLS
Button predicate = new Button( Constants.INSTANCE.NewFormula() );
predicate.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
SingleFieldConstraint con = new SingleFieldConstraint();
con.setConstraintValueType( SingleFieldConstraint.TYPE_PREDICATE );
fp.addConstraint( con );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.AddANewFormulaStyleExpression(),
predicate );
Button ebBtn = new Button( Constants.INSTANCE.ExpressionEditor() );
ebBtn.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
SingleFieldConstraintEBLeftSide con = new SingleFieldConstraintEBLeftSide();
con.setConstraintValueType( SingleFieldConstraint.TYPE_UNDEFINED );
fp.addConstraint( con );
con.setExpressionLeftSide( new ExpressionFormLine( new ExpressionUnboundFact( pattern ) ) );
modeller.refreshWidget();
popup.hide();
}
} );
popup.addAttribute( Constants.INSTANCE.ExpressionEditor(),
ebBtn );
doBindingEditor( popup );
}
popup.show();
}
private String getFactType(FactPattern fp,
SingleFieldConstraint sfc) {
String factType;
if ( sfc == null ) {
factType = fp.getFactType();
} else {
factType = sfc.getFieldType();
//If field name is "this" use parent FactPattern type otherwise we can use the Constraint's field type
String fieldName = sfc.getFieldName();
if ( SuggestionCompletionEngine.TYPE_THIS.equals( fieldName ) ) {
factType = fp.getFactType();
}
}
return factType;
}
/**
* This adds in (optionally) the editor for changing the bound variable
* name. If its a bindable pattern, it will show the editor, if it is
* already bound, and the name is used, it should not be editable.
*/
private void doBindingEditor(final FormStylePopup popup) {
if ( bindable || !(modeller.getModel().isBoundFactUsed( pattern.getBoundName() )) ) {
HorizontalPanel varName = new HorizontalPanel();
final TextBox varTxt = new BindingTextBox();
if ( pattern.getBoundName() == null ) {
varTxt.setText( "" );
} else {
varTxt.setText( pattern.getBoundName() );
}
varTxt.setVisibleLength( 6 );
varName.add( varTxt );
Button bindVar = new Button( Constants.INSTANCE.Set() );
bindVar.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
String var = varTxt.getText();
if ( modeller.isVariableNameUsed( var ) ) {
Window.alert( Constants.INSTANCE.TheVariableName0IsAlreadyTaken( var ) );
return;
}
pattern.setBoundName( varTxt.getText() );
modeller.refreshWidget();
popup.hide();
}
} );
varName.add( bindVar );
popup.addAttribute( Constants.INSTANCE.VariableName(),
varName );
}
}
}