Java tutorial
/* * Copyright (c) 2008-2016 Haulmont. * * 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 com.haulmont.cuba.web.gui.components; import com.haulmont.chile.core.model.MetaClass; import com.haulmont.cuba.core.global.AppBeans; import com.haulmont.cuba.core.global.Messages; import com.haulmont.cuba.gui.components.Action; import com.haulmont.cuba.gui.components.Frame; import com.haulmont.cuba.gui.components.SearchPickerField; import com.haulmont.cuba.gui.data.CollectionDatasource; import com.haulmont.cuba.gui.data.Datasource; import com.vaadin.data.Property; import com.vaadin.ui.ComboBox; import com.vaadin.ui.Component; import org.apache.commons.lang.ObjectUtils; import org.apache.commons.lang.StringUtils; import javax.annotation.Nonnull; import javax.annotation.Nullable; import java.util.Collection; public class WebSearchPickerField extends WebSearchField implements SearchPickerField { protected WebPickerField pickerField; protected boolean updateComponentValue = false; public WebSearchPickerField() { final ComboBox selectComponent = component; WebPickerField.Picker picker = new WebPickerField.Picker(this, component) { @Override public void setRequired(boolean required) { super.setRequired(required); selectComponent.setNullSelectionAllowed(!required); } }; pickerField = new WebPickerField(picker); Messages messages = AppBeans.get(Messages.class); setInputPrompt(messages.getMainMessage("searchPickerField.inputPrompt")); // Required for custom components in fieldgroup initValueSync(selectComponent, picker); } protected void initValueSync(final ComboBox selectComponent, final WebPickerField.Picker picker) { selectComponent.addValueChangeListener(new Property.ValueChangeListener() { @Override public void valueChange(Property.ValueChangeEvent event) { if (updateComponentValue) return; updateComponentValue = true; if (!ObjectUtils.equals(selectComponent.getValue(), picker.getValue())) { //noinspection unchecked picker.setValueIgnoreReadOnly(selectComponent.getValue()); } updateComponentValue = false; } }); picker.addValueChangeListener(new Property.ValueChangeListener() { @Override public void valueChange(Property.ValueChangeEvent event) { if (updateComponentValue) return; updateComponentValue = true; if (!ObjectUtils.equals(selectComponent.getValue(), picker.getValue())) { selectComponent.setValueIgnoreReadOnly(picker.getValue()); } updateComponentValue = false; } }); } @Override public Component getComposition() { return pickerField.getComposition(); } @Override public Component getComponent() { return pickerField.getComponent(); } @Override public MetaClass getMetaClass() { return pickerField.getMetaClass(); } @Override public void setMetaClass(MetaClass metaClass) { pickerField.setMetaClass(metaClass); } @Override public LookupAction addLookupAction() { LookupAction action = new LookupAction(this); addAction(action); return action; } @Override public ClearAction addClearAction() { ClearAction action = new ClearAction(this); addAction(action); return action; } @Override public OpenAction addOpenAction() { OpenAction action = new OpenAction(this); addAction(action); return action; } @Override public void addFieldListener(FieldListener listener) { throw new UnsupportedOperationException(); } @Override public void setFieldEditable(boolean editable) { throw new UnsupportedOperationException(); } @Override public void addAction(Action action) { pickerField.addAction(action); } @Override public void addAction(Action action, int index) { pickerField.addAction(action, index); } @Override public void removeAction(@Nullable Action action) { pickerField.removeAction(action); } @Override public void removeAction(@Nullable String id) { pickerField.removeAction(id); } @Override public void removeAllActions() { pickerField.removeAllActions(); } @Override public Collection<Action> getActions() { return pickerField.getActions(); } @Override public void setDescription(String description) { pickerField.setDescription(description); } @Override public String getDescription() { return pickerField.getDescription(); } @Override public void setCaption(String caption) { pickerField.setCaption(caption); } @Override public String getCaption() { return pickerField.getCaption(); } @Override @Nullable public Action getAction(String id) { return pickerField.getAction(id); } @Nonnull @Override public Action getActionNN(String id) { Action action = getAction(id); if (action == null) { throw new IllegalStateException("Unable to find action with id " + id); } return action; } @Override public void setFrame(Frame frame) { super.setFrame(frame); pickerField.setFrame(frame); } @Override public void setDatasource(Datasource datasource, String property) { pickerField.checkDatasourceProperty(datasource, property); super.setDatasource(datasource, property); pickerField.setDatasource(datasource, property); } @Override public void setOptionsDatasource(CollectionDatasource datasource) { super.setOptionsDatasource(datasource); if (pickerField.getMetaClass() == null && datasource != null) { pickerField.setMetaClass(datasource.getMetaClass()); } } @Override public void setEditable(boolean editable) { super.setEditable(editable); pickerField.setEditable(editable); } @Override public void setRequired(boolean required) { component.setNullSelectionAllowed(!required); pickerField.setRequired(required); } @Override public void setRequiredMessage(String msg) { pickerField.setRequiredMessage(msg); } @Override public String getRequiredMessage() { return pickerField.getRequiredMessage(); } @Override public boolean isRequired() { return pickerField.isRequired(); } }