/*
* Copyright 2014 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.dashbuilder.client.widgets.dataset.editor.workflow;
import com.google.gwt.editor.client.SimpleBeanEditorDriver;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;
import org.dashbuilder.client.widgets.dataset.event.CancelRequestEvent;
import org.dashbuilder.client.widgets.dataset.event.SaveRequestEvent;
import org.dashbuilder.client.widgets.dataset.event.TestDataSetRequestEvent;
import org.dashbuilder.client.widgets.resources.i18n.DataSetEditorConstants;
import org.dashbuilder.common.client.error.ClientRuntimeError;
import org.dashbuilder.dataset.DataSet;
import org.dashbuilder.dataset.DataSetFactory;
import org.dashbuilder.dataset.DataSetLookup;
import org.dashbuilder.dataset.client.DataSetClientServices;
import org.dashbuilder.dataset.client.DataSetReadyCallback;
import org.dashbuilder.dataset.def.DataSetDef;
import org.dashbuilder.displayer.client.DataSetEditHandler;
import org.dashbuilder.displayer.client.DataSetHandler;
import org.dashbuilder.validations.DataSetValidatorProvider;
import org.jboss.errai.ioc.client.container.SyncBeanManager;
import org.uberfire.client.mvp.UberView;
import org.uberfire.mvp.Command;
import javax.enterprise.event.Event;
import javax.inject.Inject;
import javax.validation.ConstraintViolation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
/**
* <p>Data Set Editor workflow presenter.</p>
*
* @since 0.4.0
*/
public abstract class DataSetEditorWorkflow<T extends DataSetDef> implements IsWidget {
public interface View extends UberView<DataSetEditorWorkflow> {
View add(IsWidget widget);
View addButton(final String text, final String content, final boolean isPrimary, final Command clickCommand);
View clearButtons();
View clearView();
}
/**
* -------------- CDI Injections --------------
**/
protected SyncBeanManager beanManager;
protected DataSetClientServices clientServices;
protected DataSetValidatorProvider validatorProvider;
protected Event<SaveRequestEvent> saveRequestEvent;
protected Event<TestDataSetRequestEvent> testDataSetEvent;
protected Event<CancelRequestEvent> cancelRequestEvent;
public View view;
/**
* -------------- Private class members. --------------
**/
protected T dataSetDef;
protected Collection<ConstraintViolation<?>> violations = new ArrayList<ConstraintViolation<?>>();
protected Command flushCommand;
protected Command stepValidator;
@Inject
public DataSetEditorWorkflow(final DataSetClientServices clientServices,
final DataSetValidatorProvider validatorProvider,
final SyncBeanManager beanManager,
final Event<SaveRequestEvent> saveRequestEvent,
final Event<TestDataSetRequestEvent> testDataSetEvent,
final Event<CancelRequestEvent> cancelRequestEvent,
final View view) {
this.clientServices = clientServices;
this.validatorProvider = validatorProvider;
this.beanManager = beanManager;
this.saveRequestEvent = saveRequestEvent;
this.cancelRequestEvent = cancelRequestEvent;
this.testDataSetEvent = testDataSetEvent;
this.view = view;
}
public void init() {
view.init(this);
}
public interface TestDataSetCallback {
void onSuccess(DataSet dataSet);
void onError(ClientRuntimeError error);
}
/**
* <p>Test the data set connection and obtain the preview result.</p>
*
*/
public void testDataSet(final TestDataSetCallback testDataSetCallback) {
checkDataSetDefNotNull();
// Reset columns and filter configuration.
getDataSetDef().setAllColumnsEnabled(true);
getDataSetDef().setColumns(null);
getDataSetDef().setDataSetFilter(null);
DataSetDef editCloneWithoutCacheSettings = getDataSetDef().clone();
editCloneWithoutCacheSettings.setCacheEnabled(false);
final DataSetLookup lookup = DataSetFactory.newDataSetLookupBuilder()
.dataset(dataSetDef.getUUID())
.rowOffset(0)
.rowNumber(6)
.buildLookup();
try {
DataSetHandler editHandler = new DataSetEditHandler(clientServices, lookup, editCloneWithoutCacheSettings);
editHandler.lookupDataSet(new DataSetReadyCallback() {
@Override
public void callback(final DataSet dataSet) {
testDataSetCallback.onSuccess(dataSet);
}
@Override
public void notFound() {
testDataSetCallback.onError(new ClientRuntimeError(DataSetEditorConstants.INSTANCE.defNotFound()));
}
@Override
public boolean onError(final ClientRuntimeError error) {
testDataSetCallback.onError(error);
return false;
}
});
} catch (final Exception e) {
testDataSetCallback.onError(new ClientRuntimeError(e));
}
}
public DataSetEditorWorkflow flush() {
if (DataSetEditorWorkflow.this.flushCommand != null) {
DataSetEditorWorkflow.this.flushCommand.execute();
}
return this;
}
public DataSetEditorWorkflow showNextButton() {
view.addButton(DataSetEditorConstants.INSTANCE.next(), DataSetEditorConstants.INSTANCE.next_description(), true,
saveButtonCommand);
return this;
}
public DataSetEditorWorkflow showTestButton() {
view.addButton(DataSetEditorConstants.INSTANCE.test(), DataSetEditorConstants.INSTANCE.test_description(), true,
testButtonCommand);
return this;
}
public DataSetEditorWorkflow showBackButton() {
view.addButton(DataSetEditorConstants.INSTANCE.back(), DataSetEditorConstants.INSTANCE.back_description(), false,
cancelButtonCommand);
return this;
}
public DataSetEditorWorkflow clearButtons() {
view.clearButtons();
return this;
}
public boolean hasErrors() {
return !violations.isEmpty();
}
public T getDataSetDef() {
return this.dataSetDef;
}
@Override
public Widget asWidget() {
return view.asWidget();
}
public void flush(final SimpleBeanEditorDriver driver) {
checkDataSetDefNotNull();
this.violations.clear();
driver.flush();
afterFlush();
// Validations for current step.
if (stepValidator != null) {
stepValidator.execute();
}
}
protected void afterFlush() {
// Override by typed sub-classes to perform specific data set definition flush constraints that depends on the editor state.
}
protected void addViolations(final Iterable<ConstraintViolation<?>> _violations) {
if (_violations != null) {
final Iterator<ConstraintViolation<?>> it = _violations.iterator();
while (it.hasNext()) {
final ConstraintViolation<?> _v = it.next();
this.violations.add(_v);
}
}
}
public DataSetEditorWorkflow clear() {
this.dataSetDef = null;
this.flushCommand = null;
this.stepValidator = null;
violations.clear();
view.clearView();
return this;
}
protected void checkDataSetDefNotNull() {
checkDataSetDefNotNull(dataSetDef);
}
protected void checkDataSetDefNotNull(final T def) {
if (def == null) {
throw new RuntimeException("Must call edit() before using the data set definition editor workflow methods.");
}
}
final Command testButtonCommand = new Command() {
@Override
public void execute() {
flush();
testDataSetEvent.fire(new TestDataSetRequestEvent(DataSetEditorWorkflow.this));
}
};
final Command saveButtonCommand = new Command() {
@Override
public void execute() {
flush();
saveRequestEvent.fire(new SaveRequestEvent(DataSetEditorWorkflow.this));
}
};
final Command cancelButtonCommand = new Command() {
@Override
public void execute() {
cancelRequestEvent.fire(new CancelRequestEvent(DataSetEditorWorkflow.this));
}
};
}