/*
* 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;
import com.google.gwt.editor.client.EditorDelegate;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;
import org.dashbuilder.client.widgets.dataset.editor.column.DataSetDefColumnsEditor;
import org.dashbuilder.client.widgets.dataset.event.FilterChangedEvent;
import org.dashbuilder.dataset.def.DataColumnDef;
import org.dashbuilder.dataset.def.DataSetDef;
import org.dashbuilder.dataset.filter.ColumnFilter;
import org.dashbuilder.dataset.filter.DataSetFilter;
import org.uberfire.client.mvp.UberView;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import static org.uberfire.commons.validation.PortablePreconditions.checkNotNull;
/**
* <p>Data Set columns and filter editor presenter.</p>
*
* @since 0.4.0
*/
@Dependent
public class DataSetDefColumnsFilterEditor implements IsWidget, org.dashbuilder.dataset.client.editor.DataSetDefColumnsFilterEditor {
public interface View extends UberView<DataSetDefColumnsFilterEditor> {
/**
* <p>Specify the views to use for each sub-editor before calling <code>initWidget</code>.</p>
*/
void initWidgets(IsWidget columnsEditorView,
DataSetDefFilterEditor.View dataSetFilterEditorView);
void setMaxHeight(final String maxHeight);
}
DataSetDefColumnsEditor columnsEditor;
DataSetDefFilterEditor dataSetFilterEditor;
public View view;
@Inject
public DataSetDefColumnsFilterEditor(final DataSetDefColumnsEditor columnsEditor,
final DataSetDefFilterEditor dataSetFilterEditor,
final View view) {
this.columnsEditor = columnsEditor;
this.dataSetFilterEditor = dataSetFilterEditor;
this.view = view;
}
@PostConstruct
public void init() {
view.init(this);
view.initWidgets(columnsEditor.asWidget(), dataSetFilterEditor.view);
}
@Override
public Widget asWidget() {
return view.asWidget();
}
public void setMaxHeight(final String maxHeight) {
view.setMaxHeight(maxHeight);
}
/*************************************************************
** GWT EDITOR CONTRACT METHODS **
*************************************************************/
@Override
public org.dashbuilder.dataset.client.editor.DataSetDefColumnsEditor columnListEditor() {
return columnsEditor;
}
@Override
public org.dashbuilder.dataset.client.editor.DataSetDefFilterEditor dataSetFilter() {
return dataSetFilterEditor;
}
@Override
public void setAcceptableValues(final List<DataColumnDef> acceptableValues) {
columnsEditor.setAcceptableValues(acceptableValues);
}
@Override
public void flush() {
}
@Override
public void onPropertyChange(final String... paths) {
}
@Override
public void setValue(final DataSetDef value) {
if (value != null && value.getDataSetFilter() != null) {
updateColumnsRestrictedByFilter(null, value.getDataSetFilter());
}
}
@Override
public void setDelegate(final EditorDelegate<DataSetDef> delegate) {
}
private void updateColumnsRestrictedByFilter(final DataSetFilter oldFilter, final DataSetFilter f) {
final List<String> oldFilterColumns = getFilterColumnIds(oldFilter);
final List<String> newFilterColumns = getFilterColumnIds(f);
// Check columns removed from filter.
if (!oldFilterColumns.isEmpty()) {
for (final String oldFilterColumn : oldFilterColumns) {
final boolean isRemoved = !newFilterColumns.contains(oldFilterColumn);
if (isRemoved) {
columnsEditor.onValueUnRestricted(oldFilterColumn);
}
}
}
// Check columns removed from filter.
if (!newFilterColumns.isEmpty()) {
for (final String newFilterColumn : newFilterColumns) {
columnsEditor.onValueRestricted(newFilterColumn);
}
}
}
private List<String> getFilterColumnIds(final DataSetFilter filter) {
final List<String> result = new ArrayList<String>();
if (filter != null) {
List<ColumnFilter> columnFilters = filter.getColumnFilterList();
if (columnFilters != null && !columnFilters.isEmpty()) {
for (final ColumnFilter cFilter : columnFilters) {
result.add(cFilter.getColumnId());
}
}
}
return result;
}
/**
* Listen to filter changed event in order to restrict or enable again columns used in it.
* @param filterChangedEvent The event.
*/
void onFilterChangedEvent(@Observes FilterChangedEvent filterChangedEvent) {
checkNotNull("filterChangedEvent", filterChangedEvent);
if (filterChangedEvent.getContext().equals(dataSetFilterEditor)) {
final DataSetFilter old = filterChangedEvent.getOldFilter();
final DataSetFilter f = filterChangedEvent.getFilter();
updateColumnsRestrictedByFilter(old, f);
}
}
}