Java tutorial
/** * Copyright (C) 2015 Born Informatik AG (www.born.ch) * * 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.wte4j.ui.client.templates.mapping; import static org.wte4j.ui.client.Application.LABELS; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.gwtbootstrap3.client.ui.Alert; import org.gwtbootstrap3.client.ui.Button; import org.gwtbootstrap3.client.ui.Pagination; import org.gwtbootstrap3.client.ui.constants.AlertType; import org.gwtbootstrap3.client.ui.gwt.FlowPanel; import org.gwtbootstrap3.client.ui.html.Paragraph; import org.gwtbootstrap3.client.ui.html.Strong; import org.gwtbootstrap3.client.ui.html.Text; import org.wte4j.ui.shared.MappingDto; import com.google.gwt.cell.client.FieldUpdater; import com.google.gwt.cell.client.SelectionCell; import com.google.gwt.cell.client.TextInputCell; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.user.cellview.client.CellTable; import com.google.gwt.user.cellview.client.Column; import com.google.gwt.user.cellview.client.SimplePager; import com.google.gwt.user.cellview.client.TextColumn; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.view.client.ListDataProvider; import com.google.gwt.view.client.RangeChangeEvent; import com.google.gwt.view.client.RowCountChangeEvent; public class MappingPanel extends Composite implements MappingDisplay { private static MappingPanelUiBInder uiBinder = GWT.create(MappingPanelUiBInder.class); @UiField Alert alert; @UiField Strong mainMessage; @UiField FlowPanel detailMessages; @UiField CellTable<MappingDto> mappings; Column<MappingDto, String> contentControlIdColumn; Column<MappingDto, String> modelIdColumn; Column<MappingDto, String> formatterExpressionColumn; private List<String> modelIdOptions = new ArrayList<>(); private ListDataProvider<MappingDto> dataProvider = new ListDataProvider<>(); @UiField Pagination mappingsPagination; private SimplePager internalPager; @UiField Button cancelButton; @UiField Button saveButton; public MappingPanel() { initWidget(uiBinder.createAndBindUi(this)); initMappingTable(); } private void initMappingTable() { internalPager = new SimplePager(); internalPager.setRangeLimited(true); internalPager.setPageSize(mappings.getPageSize()); internalPager.setDisplay(mappings); initcontentControlIdColumnColumn(); initModelColumn(); initFormatterExpressionColumn(); mappings.addRowCountChangeHandler(new RowCountChangeEvent.Handler() { @Override public void onRowCountChange(RowCountChangeEvent event) { mappingsPagination.rebuild(internalPager); } }); mappings.addRangeChangeHandler(new RangeChangeEvent.Handler() { @Override public void onRangeChange(RangeChangeEvent event) { mappingsPagination.rebuild(internalPager); } }); dataProvider.addDataDisplay(mappings); } private void initcontentControlIdColumnColumn() { contentControlIdColumn = new TextColumn<MappingDto>() { @Override public String getValue(MappingDto mapping) { return mapping.getConentControlKey(); } }; mappings.addColumn(contentControlIdColumn, LABELS.contentControlIdHeader()); } private void initModelColumn() { int columnIndex = -1; if (modelIdColumn != null) { columnIndex = mappings.getColumnIndex(modelIdColumn); mappings.removeColumn(columnIndex); } modelIdColumn = createModelIdColumn(); String heading = LABELS.modelIdHeader(); if (columnIndex >= 0) { mappings.insertColumn(columnIndex, modelIdColumn, heading); } else { mappings.addColumn(modelIdColumn, heading); } } private Column<MappingDto, String> createModelIdColumn() { Column<MappingDto, String> column = new Column<MappingDto, String>(new SelectionCell(modelIdOptions)) { @Override public String getValue(MappingDto mapping) { return mapping.getModelKey(); } }; column.setFieldUpdater(new FieldUpdater<MappingDto, String>() { @Override public void update(int index, MappingDto mapping, String value) { mapping.setModelKey(value); } }); return column; } private void initFormatterExpressionColumn() { formatterExpressionColumn = new Column<MappingDto, String>(new TextInputCell()) { @Override public String getValue(MappingDto mapping) { return mapping.getFormatterDefinition(); } }; formatterExpressionColumn.setFieldUpdater(new FieldUpdater<MappingDto, String>() { @Override public void update(int index, MappingDto mapping, String value) { mapping.setFormatterDefinition(value); } }); mappings.addColumn(formatterExpressionColumn, LABELS.formatterColumnHeader()); } @Override public void resetTable() { dataProvider.setList(Collections.<MappingDto>emptyList()); mappings.setRowCount(1, false); mappings.setVisibleRangeAndClearData(mappings.getVisibleRange(), true); } @Override public void setMappingData(List<MappingDto> mappingData) { dataProvider.setList(mappingData); } @Override public void setModelIdOptions(List<String> someModelIdOptions) { modelIdOptions.clear(); modelIdOptions.addAll(someModelIdOptions); initModelColumn(); mappings.redraw(); } @Override public void addSaveButtonClickHandler(ClickHandler clickHandler) { saveButton.addClickHandler(clickHandler); } @Override public void addCancelButtonClickHandler(ClickHandler clickHandler) { cancelButton.addClickHandler(clickHandler); } @Override public void hideAlert() { alert.setVisible(false); mainMessage.setText(""); detailMessages.clear(); } @Override public void showAlert(AlertType type, String message, List<String> details) { alert.setType(type); mainMessage.setText(message); detailMessages.clear(); for (String detailMessage : details) { Paragraph paragraph = new Paragraph(); paragraph.add(new Text(detailMessage)); detailMessages.add(paragraph); } alert.setVisible(true); } interface MappingPanelUiBInder extends UiBinder<Widget, MappingPanel> { } }