/*
* Copyright 2011 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.guided.dtable.client.wizard.pages;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.New;
import javax.inject.Inject;
import com.github.gwtbootstrap.client.ui.CheckBox;
import com.github.gwtbootstrap.client.ui.HelpBlock;
import com.github.gwtbootstrap.client.ui.base.StyleHelper;
import com.github.gwtbootstrap.client.ui.constants.ControlGroupType;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
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.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PushButton;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.view.client.MultiSelectionModel;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SingleSelectionModel;
import org.drools.workbench.models.guided.dtable.shared.model.ActionSetFieldCol52;
import org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52;
import org.drools.workbench.models.guided.dtable.shared.model.LimitedEntryActionSetFieldCol52;
import org.drools.workbench.models.guided.dtable.shared.model.Pattern52;
import org.drools.workbench.screens.guided.dtable.client.resources.i18n.GuidedDecisionTableConstants;
import org.drools.workbench.screens.guided.dtable.client.widget.DTCellValueWidgetFactory;
import org.drools.workbench.screens.guided.dtable.client.widget.Validator;
import org.drools.workbench.screens.guided.dtable.client.wizard.pages.cells.ActionSetFieldCell;
import org.drools.workbench.screens.guided.dtable.client.wizard.pages.cells.ActionSetFieldPatternCell;
import org.drools.workbench.screens.guided.dtable.client.wizard.pages.cells.AvailableFieldCell;
import org.kie.uberfire.client.resources.WizardCellListResources;
/**
* An implementation of the ActionSetFields page
*/
@Dependent
public class ActionSetFieldsPageViewImpl extends Composite
implements
ActionSetFieldsPageView {
private Presenter presenter;
private Validator validator;
private List<Pattern52> availablePatterns;
private Pattern52 availablePatternsSelection;
private MinimumWidthCellList<Pattern52> availablePatternsWidget;
private Set<AvailableField> availableFieldsSelections;
private MinimumWidthCellList<AvailableField> availableFieldsWidget;
private List<ActionSetFieldCol52> chosenFields;
private ActionSetFieldCol52 chosenFieldsSelection;
private Set<ActionSetFieldCol52> chosenFieldsSelections;
private MinimumWidthCellList<ActionSetFieldCol52> chosenFieldsWidget;
private DTCellValueWidgetFactory factory;
@UiField
protected ScrollPanel availablePatternsContainer;
@UiField
protected ScrollPanel availableFieldsContainer;
@UiField
protected ScrollPanel chosenFieldsContainer;
@UiField
protected PushButton btnAdd;
@UiField
protected PushButton btnRemove;
@UiField
VerticalPanel fieldDefinition;
@UiField
TextBox txtColumnHeader;
@UiField
HelpBlock txtColumnHeaderHelp;
@UiField
HorizontalPanel columnHeaderContainer;
@UiField
TextBox txtValueList;
@UiField
CheckBox chkUpdateEngine;
@UiField
VerticalPanel criteriaExtendedEntry;
@UiField
VerticalPanel criteriaLimitedEntry;
@UiField
HorizontalPanel limitedEntryValueContainer;
@UiField
SimplePanel limitedEntryValueWidgetContainer;
@UiField
HorizontalPanel defaultValueContainer;
@UiField
SimplePanel defaultValueWidgetContainer;
@New
@Inject
private ActionSetFieldPatternCell actionSetFieldPatternCell;
@New
@Inject
private ActionSetFieldCell actionSetFieldCell;
interface ActionSetFieldPageWidgetBinder
extends
UiBinder<Widget, ActionSetFieldsPageViewImpl> {
}
private static ActionSetFieldPageWidgetBinder uiBinder = GWT.create( ActionSetFieldPageWidgetBinder.class );
public ActionSetFieldsPageViewImpl() {
initWidget( uiBinder.createAndBindUi( this ) );
}
@PostConstruct
public void setup() {
this.availablePatternsWidget = new MinimumWidthCellList<Pattern52>( actionSetFieldPatternCell,
WizardCellListResources.INSTANCE );
this.availableFieldsWidget = new MinimumWidthCellList<AvailableField>( new AvailableFieldCell(),
WizardCellListResources.INSTANCE );
this.chosenFieldsWidget = new MinimumWidthCellList<ActionSetFieldCol52>( actionSetFieldCell,
WizardCellListResources.INSTANCE );
initialiseAvailablePatterns();
initialiseAvailableFields();
initialiseChosenFields();
initialiseColumnHeader();
initialiseValueList();
initialiseUpdateEngine();
}
@Override
public void setValidator( final Validator validator ) {
this.validator = validator;
this.actionSetFieldPatternCell.setValidator( validator );
this.actionSetFieldCell.setValidator( validator );
}
private void initialiseAvailablePatterns() {
availablePatternsContainer.add( availablePatternsWidget );
availablePatternsWidget.setKeyboardSelectionPolicy( KeyboardSelectionPolicy.ENABLED );
availablePatternsWidget.setMinimumWidth( 180 );
final Label lstEmpty = new Label( GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardNoAvailablePatterns() );
lstEmpty.setStyleName( WizardCellListResources.INSTANCE.cellListStyle().cellListEmptyItem() );
availablePatternsWidget.setEmptyListWidget( lstEmpty );
final SingleSelectionModel<Pattern52> selectionModel = new SingleSelectionModel<Pattern52>();
availablePatternsWidget.setSelectionModel( selectionModel );
selectionModel.addSelectionChangeHandler( new SelectionChangeEvent.Handler() {
@Override
public void onSelectionChange( final SelectionChangeEvent event ) {
availablePatternsSelection = selectionModel.getSelectedObject();
presenter.selectPattern( availablePatternsSelection );
}
} );
}
private void initialiseAvailableFields() {
availableFieldsContainer.add( availableFieldsWidget );
availableFieldsWidget.setKeyboardSelectionPolicy( KeyboardSelectionPolicy.ENABLED );
availableFieldsWidget.setMinimumWidth( 175 );
final Label lstEmpty = new Label( GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardNoAvailableFields() );
lstEmpty.setStyleName( WizardCellListResources.INSTANCE.cellListStyle().cellListEmptyItem() );
availableFieldsWidget.setEmptyListWidget( lstEmpty );
final MultiSelectionModel<AvailableField> selectionModel = new MultiSelectionModel<AvailableField>();
availableFieldsWidget.setSelectionModel( selectionModel );
selectionModel.addSelectionChangeHandler( new SelectionChangeEvent.Handler() {
@Override
public void onSelectionChange( final SelectionChangeEvent event ) {
availableFieldsSelections = selectionModel.getSelectedSet();
btnAdd.setEnabled( availableFieldsSelections.size() > 0 );
}
} );
}
private void initialiseChosenFields() {
chosenFieldsContainer.add( chosenFieldsWidget );
chosenFieldsWidget.setKeyboardSelectionPolicy( KeyboardSelectionPolicy.ENABLED );
chosenFieldsWidget.setMinimumWidth( 175 );
final Label lstEmpty = new Label( GuidedDecisionTableConstants.INSTANCE.DecisionTableWizardNoChosenFields() );
lstEmpty.setStyleName( WizardCellListResources.INSTANCE.cellListStyle().cellListEmptyItem() );
chosenFieldsWidget.setEmptyListWidget( lstEmpty );
final MultiSelectionModel<ActionSetFieldCol52> selectionModel = new MultiSelectionModel<ActionSetFieldCol52>();
chosenFieldsWidget.setSelectionModel( selectionModel );
selectionModel.addSelectionChangeHandler( new SelectionChangeEvent.Handler() {
@Override
public void onSelectionChange( final SelectionChangeEvent event ) {
chosenFieldsSelections = selectionModel.getSelectedSet();
chosenConditionsSelected( chosenFieldsSelections );
}
private void chosenConditionsSelected( final Set<ActionSetFieldCol52> cws ) {
btnRemove.setEnabled( true );
if ( cws.size() == 1 ) {
chosenFieldsSelection = cws.iterator().next();
fieldDefinition.setVisible( true );
validateFieldHeader();
populateFieldDefinition();
} else {
chosenFieldsSelection = null;
fieldDefinition.setVisible( false );
txtColumnHeader.setEnabled( false );
txtValueList.setEnabled( false );
defaultValueContainer.setVisible( false );
chkUpdateEngine.setEnabled( false );
}
}
private void populateFieldDefinition() {
// Fields common to all table formats
txtColumnHeader.setEnabled( true );
chkUpdateEngine.setEnabled( true );
txtColumnHeader.setText( chosenFieldsSelection.getHeader() );
chkUpdateEngine.setValue( chosenFieldsSelection.isUpdate() );
criteriaExtendedEntry.setVisible( presenter.getTableFormat() == GuidedDecisionTable52.TableFormat.EXTENDED_ENTRY );
criteriaLimitedEntry.setVisible( presenter.getTableFormat() == GuidedDecisionTable52.TableFormat.LIMITED_ENTRY );
// Fields specific to the table format
switch ( presenter.getTableFormat() ) {
case EXTENDED_ENTRY:
txtValueList.setEnabled( !presenter.hasEnums( chosenFieldsSelection ) );
txtValueList.setText( chosenFieldsSelection.getValueList() );
makeDefaultValueWidget();
defaultValueContainer.setVisible( true );
break;
case LIMITED_ENTRY:
makeLimitedValueWidget();
limitedEntryValueContainer.setVisible( true );
break;
}
}
private void makeLimitedValueWidget() {
if ( !( chosenFieldsSelection instanceof LimitedEntryActionSetFieldCol52 ) ) {
return;
}
final LimitedEntryActionSetFieldCol52 lea = (LimitedEntryActionSetFieldCol52) chosenFieldsSelection;
if ( lea.getValue() == null ) {
lea.setValue( factory.makeNewValue( availablePatternsSelection,
chosenFieldsSelection ) );
}
limitedEntryValueWidgetContainer.setWidget( factory.getWidget( availablePatternsSelection,
chosenFieldsSelection,
lea.getValue() ) );
}
} );
}
private void makeDefaultValueWidget() {
if ( chosenFieldsSelection.getDefaultValue() == null ) {
chosenFieldsSelection.setDefaultValue( factory.makeNewValue( availablePatternsSelection,
chosenFieldsSelection ) );
}
defaultValueWidgetContainer.setWidget( factory.getWidget( availablePatternsSelection,
chosenFieldsSelection,
chosenFieldsSelection.getDefaultValue() ) );
}
private void validateFieldHeader() {
if ( validator.isActionHeaderValid( chosenFieldsSelection ) ) {
txtColumnHeaderHelp.setVisible( false );
StyleHelper.removeStyle( columnHeaderContainer,
ControlGroupType.ERROR );
} else {
txtColumnHeaderHelp.setVisible( true );
StyleHelper.addStyle( columnHeaderContainer,
ControlGroupType.ERROR );
}
}
private void initialiseColumnHeader() {
txtColumnHeader.addValueChangeHandler( new ValueChangeHandler<String>() {
@Override
public void onValueChange( ValueChangeEvent<String> event ) {
final String header = txtColumnHeader.getText();
chosenFieldsSelection.setHeader( header );
presenter.stateChanged();
validateFieldHeader();
}
} );
}
private void initialiseValueList() {
//Copy value back to model
txtValueList.addValueChangeHandler( new ValueChangeHandler<String>() {
@Override
public void onValueChange( final ValueChangeEvent<String> event ) {
final String valueList = txtValueList.getText();
chosenFieldsSelection.setValueList( valueList );
// ValueList is optional, no need to advise of state change
}
} );
//Update Default Value widget if necessary
txtValueList.addBlurHandler( new BlurHandler() {
@Override
public void onBlur( final BlurEvent event ) {
presenter.assertDefaultValue( availablePatternsSelection,
chosenFieldsSelection );
makeDefaultValueWidget();
}
} );
}
private void initialiseUpdateEngine() {
chkUpdateEngine.addClickHandler( new ClickHandler() {
@Override
public void onClick( final ClickEvent event ) {
chosenFieldsSelection.setUpdate( chkUpdateEngine.getValue() );
}
} );
}
@Override
public void init( final ActionSetFieldsPageView.Presenter presenter ) {
this.presenter = presenter;
}
@Override
public void setDTCellValueWidgetFactory( final DTCellValueWidgetFactory factory ) {
this.factory = factory;
}
@Override
public void setArePatternBindingsUnique( final boolean arePatternBindingsUnique ) {
availablePatternsWidget.redraw();
}
@Override
public void setAreActionSetFieldsDefined( final boolean areActionSetFieldsDefined ) {
chosenFieldsWidget.redraw();
}
@Override
public void setAvailablePatterns( final List<Pattern52> patterns ) {
availablePatterns = patterns;
availablePatternsWidget.setRowCount( availablePatterns.size(),
true );
availablePatternsWidget.setRowData( availablePatterns );
if ( availablePatternsSelection != null ) {
// If the currently selected pattern is no longer available clear selections
if ( !availablePatterns.contains( availablePatternsSelection ) ) {
availablePatternsWidget.getSelectionModel().setSelected( availablePatternsSelection,
false );
availablePatternsSelection = null;
setAvailableFields( new ArrayList<AvailableField>() );
availableFieldsSelections = null;
setChosenFields( new ArrayList<ActionSetFieldCol52>() );
chosenFieldsSelection = null;
fieldDefinition.setVisible( false );
}
} else {
// If no available pattern is selected clear fields
setAvailableFields( new ArrayList<AvailableField>() );
setChosenFields( new ArrayList<ActionSetFieldCol52>() );
}
}
@Override
public void setAvailableFields( final List<AvailableField> fields ) {
availableFieldsWidget.setRowCount( fields.size(),
true );
availableFieldsWidget.setRowData( fields );
}
@Override
public void setChosenFields( final List<ActionSetFieldCol52> fields ) {
chosenFields = fields;
chosenFieldsWidget.setRowCount( fields.size(),
true );
chosenFieldsWidget.setRowData( fields );
fieldDefinition.setVisible( fields.contains( chosenFieldsSelection ) );
presenter.stateChanged();
}
@UiHandler(value = "btnAdd")
public void btnAddClick( final ClickEvent event ) {
for ( AvailableField f : availableFieldsSelections ) {
chosenFields.add( makeNewActionColumn( f ) );
}
setChosenFields( chosenFields );
presenter.stateChanged();
}
private ActionSetFieldCol52 makeNewActionColumn( final AvailableField f ) {
final GuidedDecisionTable52.TableFormat format = presenter.getTableFormat();
if ( format == GuidedDecisionTable52.TableFormat.EXTENDED_ENTRY ) {
final ActionSetFieldCol52 a = new ActionSetFieldCol52();
a.setBoundName( availablePatternsSelection.getBoundName() );
a.setFactField( f.getName() );
a.setType( f.getType() );
return a;
} else {
final LimitedEntryActionSetFieldCol52 a = new LimitedEntryActionSetFieldCol52();
a.setBoundName( availablePatternsSelection.getBoundName() );
a.setFactField( f.getName() );
a.setType( f.getType() );
return a;
}
}
@UiHandler(value = "btnRemove")
public void btnRemoveClick( final ClickEvent event ) {
for ( ActionSetFieldCol52 a : chosenFieldsSelections ) {
chosenFields.remove( a );
}
chosenFieldsSelections.clear();
setChosenFields( chosenFields );
presenter.stateChanged();
txtColumnHeader.setText( "" );
txtValueList.setText( "" );
defaultValueContainer.setVisible( false );
fieldDefinition.setVisible( false );
btnRemove.setEnabled( false );
}
}