/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* 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.guided.rule.client.widget;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import org.drools.workbench.models.datamodel.oracle.DataType;
import org.drools.workbench.models.datamodel.oracle.ModelField;
import org.drools.workbench.models.datamodel.oracle.OperatorsOracle;
import org.drools.workbench.models.datamodel.rule.CompositeFieldConstraint;
import org.drools.workbench.models.datamodel.rule.FactPattern;
import org.drools.workbench.models.datamodel.rule.FieldConstraint;
import org.drools.workbench.models.datamodel.rule.HasCEPWindow;
import org.drools.workbench.models.datamodel.rule.HasConstraints;
import org.drools.workbench.models.datamodel.rule.IPattern;
import org.drools.workbench.models.datamodel.rule.RuleAttribute;
import org.drools.workbench.models.datamodel.rule.RuleModel;
import org.drools.workbench.models.datamodel.rule.SingleFieldConstraint;
import org.drools.workbench.models.datamodel.rule.SingleFieldConstraintEBLeftSide;
import org.drools.workbench.models.datamodel.rule.builder.DRLConstraintValueBuilder;
import org.drools.workbench.models.datamodel.rule.visitors.ToStringExpressionVisitor;
import org.drools.workbench.screens.guided.rule.client.editor.CEPOperatorsDropdown;
import org.drools.workbench.screens.guided.rule.client.editor.CEPWindowOperatorsDropdown;
import org.drools.workbench.screens.guided.rule.client.editor.ConstraintValueEditor;
import org.drools.workbench.screens.guided.rule.client.editor.ExpressionTypeChangeEvent;
import org.drools.workbench.screens.guided.rule.client.editor.ExpressionTypeChangeHandler;
import org.drools.workbench.screens.guided.rule.client.editor.OperatorSelection;
import org.drools.workbench.screens.guided.rule.client.editor.RuleModeller;
import org.drools.workbench.screens.guided.rule.client.editor.factPattern.Connectives;
import org.drools.workbench.screens.guided.rule.client.editor.factPattern.PopupCreator;
import org.drools.workbench.screens.guided.rule.client.resources.GuidedRuleEditorResources;
import org.drools.workbench.screens.guided.rule.client.resources.images.GuidedRuleEditorImages508;
import org.gwtbootstrap3.client.ui.TextBox;
import org.kie.workbench.common.widgets.client.resources.HumanReadable;
import org.kie.workbench.common.widgets.client.resources.i18n.HumanReadableConstants;
import org.uberfire.client.callbacks.Callback;
import org.uberfire.ext.widgets.common.client.common.ClickableLabel;
import org.uberfire.ext.widgets.common.client.common.SmallLabel;
/**
* This is the new smart widget that works off the model.
*/
public class FactPatternWidget extends RuleModellerWidget {
private FactPattern pattern;
private FlexTable layout = new FlexTable();
private Connectives connectives;
private PopupCreator popupCreator;
private boolean bindable;
private boolean isAll0WithLabel;
private boolean readOnly;
private boolean isFactTypeKnown;
private final Map<SingleFieldConstraint, ConstraintValueEditor> constraintValueEditors = new HashMap<SingleFieldConstraint, ConstraintValueEditor>();
private ConstraintValueEditor constraintValueEditor;
public FactPatternWidget( RuleModeller mod,
EventBus eventBus,
IPattern p,
boolean canBind ) {
this( mod,
eventBus,
p,
false,
canBind,
null );
}
/**
* Creates a new FactPatternWidget
* @param canBind
* @param readOnly if the widget should be in RO mode. If this parameter is null,
* the readOnly attribute is calculated.
*/
public FactPatternWidget( RuleModeller ruleModeller,
EventBus eventBus,
IPattern pattern,
boolean canBind,
Boolean readOnly ) {
this( ruleModeller,
eventBus,
pattern,
false,
canBind,
readOnly );
}
public FactPatternWidget( RuleModeller mod,
EventBus eventBus,
IPattern p,
boolean isAll0WithLabel,
boolean canBind,
Boolean readOnly ) {
super( mod,
eventBus );
this.pattern = (FactPattern) p;
this.bindable = canBind;
this.popupCreator = new PopupCreator();
this.popupCreator.setBindable( bindable );
this.popupCreator.setDataModelOracle( mod.getDataModelOracle() );
this.popupCreator.setModeller( mod );
this.popupCreator.setPattern( pattern );
this.isAll0WithLabel = isAll0WithLabel;
//if readOnly == null, the RO attribute is calculated.
this.isFactTypeKnown = mod.getDataModelOracle().isFactTypeRecognized( this.pattern.getFactType() );
if ( readOnly == null ) {
this.readOnly = !this.isFactTypeKnown;
} else {
this.readOnly = readOnly;
}
this.connectives = new Connectives( mod,
eventBus,
pattern,
this.readOnly );
layout.setWidget( 0,
0,
getPatternLabel( this.pattern ) );
FlexCellFormatter formatter = layout.getFlexCellFormatter();
formatter.setAlignment( 0,
0,
HasHorizontalAlignment.ALIGN_LEFT,
HasVerticalAlignment.ALIGN_BOTTOM );
formatter.setStyleName( 0,
0,
"modeller-fact-TypeHeader" );
List<FieldConstraint> sortedConst = sortConstraints( pattern.getFieldConstraints() );
pattern.setFieldConstraints( sortedConst );
drawConstraints( sortedConst,
pattern );
//CEP 'window' widget
int row = layout.getRowCount() + 1;
layout.setWidget( row,
0,
createCEPWindowWidget( mod,
pattern ) );
if ( this.readOnly ) {
layout.addStyleName( "editor-disabled-widget" );
}
initWidget( layout );
}
/**
* Render a hierarchy of constraints, hierarchy here means constraints that
* may themselves depend on members of constraint objects. With this code,
* the GUI enables clicking rules of the form: $result = RoutingResult(
* NerOption.types contains "arzt" )
* @param sortedConst a sorted list of constraints to display.
*/
private void drawConstraints( List<FieldConstraint> sortedConst,
HasConstraints hasConstraints ) {
final FlexTable table = new FlexTable();
layout.setWidget( 1,
0,
table );
List<FieldConstraint> parents = new ArrayList<FieldConstraint>();
for ( int i = 0; i < sortedConst.size(); i++ ) {
traverseSingleFieldConstraints( sortedConst,
table,
parents,
hasConstraints,
i );
//now the clear icon
final int currentRow = i;
Image clear = GuidedRuleEditorImages508.INSTANCE.DeleteItemSmall();
clear.setTitle( GuidedRuleEditorResources.CONSTANTS.RemoveThisWholeRestriction() );
clear.addClickHandler( createClickHandlerForClearImageButton( currentRow ) );
if ( !this.readOnly ) {
//This used to be 5 and Connectives were not rendered
table.setWidget( currentRow,
6,
clear );
}
}
}
private ClickHandler createClickHandlerForClearImageButton( final int currentRow ) {
return new ClickHandler() {
public void onClick( ClickEvent event ) {
if ( Window.confirm( GuidedRuleEditorResources.CONSTANTS.RemoveThisItem() ) ) {
setModified( true );
pattern.removeConstraint( currentRow );
getModeller().refreshWidget();
}
}
};
}
private void traverseSingleFieldConstraints( List<FieldConstraint> sortedConst,
final FlexTable table,
List<FieldConstraint> parents,
HasConstraints hasConstraints,
int i ) {
int tabs = -1;
FieldConstraint current = sortedConst.get( i );
if ( current instanceof SingleFieldConstraint ) {
SingleFieldConstraint single = (SingleFieldConstraint) current;
FieldConstraint parent = single.getParent();
for ( int j = 0; j < parents.size(); j++ ) {
FieldConstraint storedParent = parents.get( j );
if ( storedParent != null && storedParent.equals( parent ) ) {
tabs = j + 1;
traverseForRemoval( parents,
j );
parents.add( current );
break;
}
}
if ( tabs < 0 ) {
tabs = 0;
parents.add( current );
}
}
renderFieldConstraint( table,
i,
current,
hasConstraints,
true,
tabs );
}
private void traverseForRemoval( List<FieldConstraint> parents,
int j ) {
for ( int k = j + 1; k < parents.size(); k++ ) {
parents.remove( j + 1 );
}
}
/**
* Sort the rule constraints such that parent rules are inserted directly
* before their child rules.
* @param constraints the list of inheriting constraints to sort.
* @return a sorted list of constraints ready for display.
*/
private List<FieldConstraint> sortConstraints( FieldConstraint[] constraints ) {
List<FieldConstraint> sortedConst = new ArrayList<FieldConstraint>( constraints.length );
for ( int i = 0; i < constraints.length; i++ ) {
FieldConstraint current = constraints[ i ];
if ( current instanceof SingleFieldConstraint ) {
SingleFieldConstraint single = (SingleFieldConstraint) current;
int index = sortedConst.indexOf( single.getParent() );
if ( single.getParent() == null ) {
sortedConst.add( single );
} else if ( index >= 0 ) {
sortedConst.add( index + 1,
single );
} else {
insertSingleFieldConstraint( single,
sortedConst );
}
} else {
sortedConst.add( current );
}
}
return sortedConst;
}
/**
* Recursively add constraints and their parents.
* @param sortedConst the array to fill.
* @param fieldConst the constraint to investigate.
*/
private void insertSingleFieldConstraint( SingleFieldConstraint fieldConst,
List<FieldConstraint> sortedConst ) {
if ( fieldConst.getParent() instanceof SingleFieldConstraint ) {
insertSingleFieldConstraint( (SingleFieldConstraint) fieldConst.getParent(),
sortedConst );
}
sortedConst.add( fieldConst );
}
/**
* This will render a field constraint into the given table. The row is the
* row number to stick it into.
*/
private void renderFieldConstraint( final FlexTable inner,
int row,
FieldConstraint constraint,
HasConstraints hasConstraints,
boolean showBinding,
int tabs ) {
//if nesting, or predicate, then it will need to span 5 cols.
if ( constraint instanceof SingleFieldConstraint ) {
renderSingleFieldConstraint( inner,
row,
(SingleFieldConstraint) constraint,
hasConstraints,
showBinding,
tabs );
} else if ( constraint instanceof CompositeFieldConstraint ) {
inner.setWidget( row,
1,
compositeFieldConstraintEditor( (CompositeFieldConstraint) constraint ) );
inner.getFlexCellFormatter().setColSpan( row,
1,
5 );
inner.setWidget( row,
0,
new HTML( " " ) ); //NON-NLS
}
}
/**
* This will show the constraint editor - allowing field constraints to be
* nested etc.
*/
private Widget compositeFieldConstraintEditor( final CompositeFieldConstraint constraint ) {
FlexTable t = new FlexTable();
String desc = null;
ClickHandler click = new ClickHandler() {
public void onClick( ClickEvent event ) {
popupCreator.showPatternPopupForComposite( constraint );
}
};
if ( constraint.getCompositeJunctionType().equals( CompositeFieldConstraint.COMPOSITE_TYPE_AND ) ) {
desc = GuidedRuleEditorResources.CONSTANTS.AllOf() + ":";
} else {
desc = GuidedRuleEditorResources.CONSTANTS.AnyOf() + ":";
}
t.setWidget( 0,
0,
new ClickableLabel( desc,
click,
!this.readOnly ) );
t.getFlexCellFormatter().setColSpan( 0,
0,
2 );
FieldConstraint[] nested = constraint.getConstraints();
FlexTable inner = new FlexTable();
if ( nested != null ) {
for ( int i = 0; i < nested.length; i++ ) {
this.renderFieldConstraint( inner,
i,
nested[ i ],
constraint,
true,
0 );
//add in remove icon here...
final int currentRow = i;
Image clear = GuidedRuleEditorImages508.INSTANCE.DeleteItemSmall();
clear.setTitle( GuidedRuleEditorResources.CONSTANTS.RemoveThisNestedRestriction() );
clear.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
if ( Window.confirm( GuidedRuleEditorResources.CONSTANTS.RemoveThisItemFromNestedConstraint() ) ) {
setModified( true );
constraint.removeConstraint( currentRow );
getModeller().refreshWidget();
}
}
} );
if ( !this.readOnly ) {
//This used to be 5 and Connectives were not rendered
inner.setWidget( i,
6,
clear );
}
}
}
t.setWidget( 1,
1,
inner );
t.setWidget( 1,
0,
new HTML( " " ) );
return t;
}
/**
* Applies a single field constraint to the given table, and start row.
*/
private void renderSingleFieldConstraint( final FlexTable inner,
final int row,
final SingleFieldConstraint constraint,
final HasConstraints hasConstraints,
boolean showBinding,
final int tabs ) {
final int col = 1; //for offsetting, just a slight indent
inner.setWidget( row,
0,
new HTML( " " ) );
if ( constraint.getConstraintValueType() != SingleFieldConstraint.TYPE_PREDICATE ) {
HorizontalPanel ebContainer = null;
if ( constraint instanceof SingleFieldConstraintEBLeftSide ) {
ebContainer = expressionBuilderLS( (SingleFieldConstraintEBLeftSide) constraint,
showBinding );
inner.setWidget( row,
0 + col,
ebContainer );
} else {
inner.setWidget( row,
0 + col,
fieldLabel( constraint,
hasConstraints,
showBinding,
tabs * 20 ) );
}
inner.setWidget( row,
1 + col,
operatorDropDown( constraint,
inner,
row,
2 + col ) );
//Get first part of constraint.fieldName? #1=Fact1, #2=SubFact1
inner.setWidget( row,
2 + col,
createValueEditor( constraint ) );
inner.setWidget( row,
3 + col,
connectives.connectives( constraint ) );
if ( ebContainer != null && ebContainer.getWidgetCount() > 0 ) {
if ( ebContainer.getWidget( 0 ) instanceof ExpressionBuilder ) {
associateExpressionWithChangeHandler( inner,
row,
constraint,
col,
ebContainer );
}
}
} else if ( constraint.getConstraintValueType() == SingleFieldConstraint.TYPE_PREDICATE ) {
inner.setWidget( row,
1,
predicateEditor( constraint ) );
inner.getFlexCellFormatter().setColSpan( row,
1,
5 );
}
}
//Widget for CEP 'windows'
private Widget createCEPWindowWidget( final RuleModeller modeller,
final HasCEPWindow c ) {
final HorizontalPanel hp = new HorizontalPanel();
modeller.getDataModelOracle().isFactTypeAnEvent( pattern.getFactType(),
new Callback<Boolean>() {
@Override
public void callback( final Boolean result ) {
if ( Boolean.TRUE.equals( result ) ) {
final Label lbl = new Label( HumanReadableConstants.INSTANCE.OverCEPWindow() );
lbl.setStyleName( "paddedLabel" );
hp.add( lbl );
final CEPWindowOperatorsDropdown cwo = new CEPWindowOperatorsDropdown( c,
readOnly );
if ( !isReadOnly() ) {
cwo.addValueChangeHandler( new ValueChangeHandler<OperatorSelection>() {
public void onValueChange( ValueChangeEvent<OperatorSelection> event ) {
setModified( true );
OperatorSelection selection = event.getValue();
String selected = selection.getValue();
c.getWindow().setOperator( selected );
}
} );
}
hp.add( cwo );
}
}
} );
return hp;
}
private void associateExpressionWithChangeHandler( final FlexTable inner,
final int row,
final SingleFieldConstraint constraint,
final int col,
HorizontalPanel ebContainer ) {
ExpressionBuilder eb = (ExpressionBuilder) ebContainer.getWidget( 0 );
eb.addExpressionTypeChangeHandler( new ExpressionTypeChangeHandler() {
public void onExpressionTypeChanged( ExpressionTypeChangeEvent event ) {
try {
//Change "operator" drop-down as the content depends on data-type
constraint.setFieldType( event.getNewType() );
inner.setWidget( row,
1 + col,
operatorDropDown( constraint,
inner,
row,
2 + col ) );
//Change "value" editor to the pen icon as the applicable Widget depends on data-type
constraint.setConstraintValueType( SingleFieldConstraint.TYPE_UNDEFINED );
constraint.setValue( "" );
inner.setWidget( row,
2 + col,
createValueEditor( constraint ) );
} catch ( Exception e ) {
e.printStackTrace();
}
}
} );
}
/**
* This provides an inline formula editor, not unlike a spreadsheet does.
*/
private Widget predicateEditor( final SingleFieldConstraint c ) {
HorizontalPanel pred = new HorizontalPanel();
pred.setWidth( "100%" );
Image img = new Image( GuidedRuleEditorResources.INSTANCE.images().functionAssets() );
img.setTitle( GuidedRuleEditorResources.CONSTANTS.FormulaBooleanTip() );
pred.add( img );
if ( c.getValue() == null ) {
c.setValue( "" );
}
final TextBox box = new TextBox();
box.setText( c.getValue() );
if ( !this.readOnly ) {
box.addChangeHandler( new ChangeHandler() {
public void onChange( ChangeEvent event ) {
setModified( true );
c.setValue( box.getText() );
}
} );
box.setWidth( "100%" );
pred.add( box );
} else {
pred.add( new SmallLabel( c.getValue() ) );
}
return pred;
}
/**
* This returns the pattern label.
*/
private Widget getPatternLabel( final FactPattern fp ) {
ClickHandler click = new ClickHandler() {
public void onClick( ClickEvent event ) {
popupCreator.showPatternPopup( fp,
null,
false );
}
};
String patternName = ( pattern.isBound() ) ? pattern.getFactType() + " <b>[" + pattern.getBoundName() + "]</b>" : pattern.getFactType();
String desc;
if ( isAll0WithLabel ) {
desc = GuidedRuleEditorResources.CONSTANTS.All0with( patternName );
} else {
if ( pattern.getNumberOfConstraints() > 0 ) {
desc = GuidedRuleEditorResources.CONSTANTS.ThereIsAAn0With( patternName );
} else {
desc = GuidedRuleEditorResources.CONSTANTS.ThereIsAAn0( patternName );
}
desc = anA( desc,
patternName );
}
return new ClickableLabel( desc,
click,
!this.readOnly );
}
/**
* Change to an/a depending on context - only for english TODO use GWT
* support for that:
* http://code.google.com/intl/nl/webtoolkit/doc/latest/DevGuideI18n.html
*/
private String anA( String desc,
String patternName ) {
if ( desc.startsWith( "There is a/an" ) ) { //NON-NLS
String vowel = patternName.substring( 0,
1 );
if ( vowel.equalsIgnoreCase( "A" ) || vowel.equalsIgnoreCase( "E" ) || vowel.equalsIgnoreCase( "I" ) || vowel.equalsIgnoreCase( "O" ) || vowel.equalsIgnoreCase( "U" ) ) { //NON-NLS
return desc.replace( "There is a/an",
"There is an" ); //NON-NLS
} else {
return desc.replace( "There is a/an",
"There is a" ); //NON-NLS
}
} else {
return desc;
}
}
private Widget createValueEditor( final SingleFieldConstraint constraint ) {
constraintValueEditor = new ConstraintValueEditor( constraint,
pattern.getConstraintList(),
this.getModeller(),
this.getEventBus(),
this.readOnly );
//If any literal value changes set to dirty and refresh dependent enumerations
constraintValueEditor.setOnValueChangeCommand( new Command() {
public void execute() {
constraintValueEditor.hideError();
setModified( true );
refreshConstraintValueEditorsDropDownData( constraint );
}
} );
//If a Template Key value changes only set to dirty
constraintValueEditor.setOnTemplateValueChangeCommand( new Command() {
public void execute() {
constraintValueEditor.hideError();
setModified( true );
}
} );
//Keep a reference to the value editors so they can be refreshed for dependent enums
constraintValueEditors.put( constraint,
constraintValueEditor );
return constraintValueEditor;
}
private Widget operatorDropDown( final SingleFieldConstraint constraint,
final FlexTable inner,
final int row,
final int col ) {
final HorizontalPanel hp = new HorizontalPanel();
if ( !this.readOnly ) {
getOperatorDropDown( constraint, inner, row, col, new Callback<CEPOperatorsDropdown>() {
@Override
public void callback( CEPOperatorsDropdown result ) {
hp.add( result );
}
} );
} else {
final SmallLabel sl = new SmallLabel( "<b>" + ( constraint.getOperator() == null ? GuidedRuleEditorResources.CONSTANTS.pleaseChoose() : HumanReadable.getOperatorDisplayName( constraint.getOperator() ) ) + "</b>" );
hp.add( sl );
}
return hp;
}
private void getOperatorDropDown( final SingleFieldConstraint constraint,
final FlexTable inner,
final int row,
final int col,
final Callback<CEPOperatorsDropdown> callback ) {
String fieldName;
String factType;
//Connectives Operators are handled in class Connectives
if ( constraint instanceof SingleFieldConstraintEBLeftSide ) {
SingleFieldConstraintEBLeftSide sfexp = (SingleFieldConstraintEBLeftSide) constraint;
factType = sfexp.getExpressionLeftSide().getPreviousClassType();
if ( factType == null ) {
factType = sfexp.getExpressionLeftSide().getClassType();
}
fieldName = sfexp.getExpressionLeftSide().getFieldName();
} else {
factType = constraint.getFactType();
fieldName = constraint.getFieldName();
}
getOperatorCompletions( constraint, inner, row, col, callback, fieldName, factType );
}
private void getOperatorCompletions( final SingleFieldConstraint constraint,
final FlexTable inner,
final int row,
final int col,
final Callback<CEPOperatorsDropdown> callback,
String fieldName,
String factType ) {
connectives.getDataModelOracle().getOperatorCompletions( factType,
fieldName,
new Callback<String[]>() {
@Override
public void callback( final String[] operators ) {
CEPOperatorsDropdown dropdown = new CEPOperatorsDropdown( operators,
constraint );
callback.callback( dropdown );
dropdown.addValueChangeHandler( new ValueChangeHandler<OperatorSelection>() {
public void onValueChange( ValueChangeEvent<OperatorSelection> event ) {
onDropDownValueChanged( event, constraint, inner, row, col );
}
} );
}
} );
}
private void onDropDownValueChanged( ValueChangeEvent<OperatorSelection> event,
SingleFieldConstraint constraint,
FlexTable inner,
int row,
int col ) {
setModified( true );
final String selected = event.getValue().getValue();
final String selectedText = event.getValue().getDisplayText();
final String originalOperator = constraint.getOperator();
//Prevent recursion once operator change has been applied
if ( selectedText.equals( constraint.getOperator() ) ) {
return;
}
constraint.setOperator( selected );
if ( constraint.getOperator().equals( "" ) ) {
constraint.setOperator( null );
constraintValueEditor.hideError();
} else {
constraintValueEditor.showError();
}
if ( inner != null ) {
if ( isWidgetForValueNeeded( selectedText ) ) {
inner.getWidget( row, col ).setVisible( false );
} else {
inner.getWidget( row, col ).setVisible( true );
}
}
//If new operator requires a comma separated list and old did not, or vice-versa
//we need to redraw the ConstraintValueEditor for the constraint
if ( OperatorsOracle.operatorRequiresList( selected ) != OperatorsOracle.operatorRequiresList( originalOperator ) ) {
if ( OperatorsOracle.operatorRequiresList( selected ) == false ) {
final String[] oldValueList = constraint.getValue().split( "," );
if ( oldValueList.length > 0 ) {
constraint.setValue( oldValueList[ 0 ] );
}
}
//Redraw ConstraintValueEditor
inner.setWidget(
row,
col,
createValueEditor( constraint ) );
}
}
private boolean isWidgetForValueNeeded( String selectedText ) {
return selectedText.equals( HumanReadableConstants.INSTANCE.isEqualToNull() ) || selectedText.equals( HumanReadableConstants.INSTANCE.isNotEqualToNull() );
}
private HorizontalPanel expressionBuilderLS( final SingleFieldConstraintEBLeftSide con,
boolean showBinding ) {
HorizontalPanel ab = new HorizontalPanel();
ab.setStyleName( "modeller-field-Label" );
if ( !con.isBound() ) {
if ( bindable && showBinding && !this.readOnly ) {
ab.add( new ExpressionBuilder( getModeller(),
getEventBus(),
con.getExpressionLeftSide() ) );
} else {
final DRLConstraintValueBuilder constraintValueBuilder = DRLConstraintValueBuilder.getBuilder( getRuleDialect() );
final ToStringExpressionVisitor visitor = new ToStringExpressionVisitor( constraintValueBuilder );
ab.add( new SmallLabel( con.getExpressionLeftSide().getText( visitor ) ) );
}
} else {
ab.add( new ExpressionBuilder( getModeller(),
getEventBus(),
con.getExpressionLeftSide() ) );
}
return ab;
}
/**
* get the field widget. This may be a simple label, or it may be bound (and
* show the var name) or a icon to create a binding. It will only show the
* binding option of showBinding is true.
*/
private Widget fieldLabel( final SingleFieldConstraint con,
final HasConstraints hasConstraints,
final boolean showBinding,
final int padding ) {
HorizontalPanel ab = new HorizontalPanel();
ab.setStyleName( "modeller-field-Label" );
StringBuilder bindingLabel = new StringBuilder();
if ( con.isBound() ) {
bindingLabel.append( "<b>[" );
bindingLabel.append( con.getFieldBinding() );
bindingLabel.append( "]</b> " );
}
String fieldName = con.getFieldName();
bindingLabel.append( fieldName );
if ( bindable && showBinding && !this.readOnly ) {
ClickHandler click = new ClickHandler() {
public void onClick( final ClickEvent event ) {
//If field name is "this" use parent FactPattern type otherwise we can use the Constraint's field type
String fieldName = con.getFieldName();
if ( DataType.TYPE_THIS.equals( fieldName ) ) {
connectives.getDataModelOracle().getFieldCompletions( pattern.getFactType(),
new Callback<ModelField[]>() {
@Override
public void callback( final ModelField[] fields ) {
popupCreator.showBindFieldPopup( pattern,
con,
fields,
popupCreator );
}
} );
} else {
connectives.getDataModelOracle().getFieldCompletions( con.getFieldType(),
new Callback<ModelField[]>() {
@Override
public void callback( final ModelField[] fields ) {
popupCreator.showBindFieldPopup( pattern,
con,
fields,
popupCreator );
}
} );
}
}
};
ClickableLabel cl = new ClickableLabel( bindingLabel.toString(),
click,
!this.readOnly );
DOM.setStyleAttribute( cl.getElement(),
"marginLeft",
"" + padding + "pt" );
ab.add( cl );
} else {
ab.add( new SmallLabel( bindingLabel.toString() ) );
}
return ab;
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
@Override
public boolean isFactTypeKnown() {
return this.isFactTypeKnown;
}
private void refreshConstraintValueEditorsDropDownData( final SingleFieldConstraint modifiedConstraint ) {
for ( Map.Entry<SingleFieldConstraint, ConstraintValueEditor> e : constraintValueEditors.entrySet() ) {
final SingleFieldConstraint sfc = e.getKey();
if ( sfc.getConstraintValueType() == SingleFieldConstraint.TYPE_LITERAL || sfc.getConstraintValueType() == SingleFieldConstraint.TYPE_ENUM ) {
if ( !sfc.equals( modifiedConstraint ) ) {
e.getValue().refreshEditor();
}
}
}
}
private String getRuleDialect() {
final RuleModel model = getModeller().getModel();
for ( int i = 0; i < model.attributes.length; i++ ) {
RuleAttribute attr = model.attributes[ i ];
if ( attr.getAttributeName().equals( "dialect" ) ) {
return attr.getValue();
}
}
return DRLConstraintValueBuilder.DEFAULT_DIALECT;
}
}