| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.cocoon.forms.formmodel; |
| |
| import java.util.Iterator; |
| import java.util.Locale; |
| |
| import org.apache.avalon.framework.service.ServiceSelector; |
| |
| import org.apache.cocoon.forms.FormsConstants; |
| import org.apache.cocoon.forms.FormsException; |
| import org.apache.cocoon.forms.datatype.Datatype; |
| import org.apache.cocoon.forms.datatype.SelectionList; |
| import org.apache.cocoon.forms.datatype.SelectionListBuilder; |
| import org.apache.cocoon.forms.datatype.convertor.ConversionResult; |
| import org.apache.cocoon.forms.event.ValueChangedListener; |
| import org.apache.cocoon.forms.util.DomHelper; |
| import org.apache.cocoon.i18n.I18nUtils; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * Abstract base class for WidgetDefinitionBuilders that build widgets that have datatypes/selection lists. |
| * |
| * @version $Id$ |
| */ |
| public abstract class AbstractDatatypeWidgetDefinitionBuilder extends AbstractWidgetDefinitionBuilder { |
| |
| protected void setupDefinition(Element widgetElement, |
| AbstractDatatypeWidgetDefinition definition, |
| WidgetDefinitionBuilderContext context) |
| throws Exception { |
| setupDefinition(widgetElement, definition, context, false); |
| } |
| |
| protected void setupDefinition(Element widgetElement, |
| AbstractDatatypeWidgetDefinition definition, |
| WidgetDefinitionBuilderContext context, |
| boolean isArrayType) |
| throws Exception { |
| super.setupDefinition(widgetElement, definition, context); |
| // parse "label", "hint", etc. |
| setDisplayData(widgetElement, definition); |
| |
| // parse "on-value-changed" |
| Iterator i = buildEventListeners(widgetElement, "on-value-changed", ValueChangedListener.class).iterator(); |
| while (i.hasNext()) { |
| definition.addValueChangedListener((ValueChangedListener)i.next()); |
| } |
| |
| //---- parse "datatype" |
| Element datatypeElement = DomHelper.getChildElement(widgetElement, FormsConstants.DEFINITION_NS, "datatype"); |
| if (datatypeElement != null) { |
| Datatype datatype = datatypeManager.createDatatype(datatypeElement, isArrayType); |
| |
| // ---- parse "initial-value" |
| Object initialValue = null; |
| Element initialValueElement = DomHelper.getChildElement(widgetElement, FormsConstants.DEFINITION_NS, "initial-value", false); |
| if (initialValueElement != null) { |
| String localeValue = DomHelper.getAttribute(initialValueElement, "locale", null); |
| Locale locale = localeValue == null ? Locale.getDefault() : I18nUtils.parseLocale(localeValue); |
| String value = DomHelper.getElementText(initialValueElement); |
| ConversionResult result = datatype.convertFromString(value, locale); |
| if (!result.isSuccessful()) { |
| throw new FormsException("Cannot parse initial value '" + value + "'.", |
| DomHelper.getLocationObject(initialValueElement)); |
| } |
| initialValue = result.getResult(); |
| } |
| |
| definition.setDatatype(datatype, initialValue); |
| } |
| |
| |
| //---- parse "selection-list" |
| // FIXME: pass the manager to the definition as a side effect. Should be removed |
| // when definition are managed like components. |
| definition.service(this.serviceManager); |
| |
| SelectionList list = buildSelectionList(widgetElement, definition, "selection-list"); |
| if (list != null) { |
| definition.setSelectionList(list); |
| } |
| } |
| |
| protected SelectionList buildSelectionList(Element widgetElement, |
| AbstractDatatypeWidgetDefinition definition, |
| String name) |
| throws Exception { |
| Element selectionListElement = DomHelper.getChildElement(widgetElement, FormsConstants.DEFINITION_NS, name); |
| |
| if (selectionListElement != null && definition.getDatatype() == null) { |
| throw new FormsException("A widget with a selection list requires a datatype.", |
| DomHelper.getLocationObject(widgetElement)); |
| } |
| |
| if (selectionListElement == null) { |
| return null; |
| } |
| |
| // Get an appropriate list builder |
| ServiceSelector builderSelector = (ServiceSelector) this.serviceManager.lookup(SelectionListBuilder.ROLE + "Selector"); |
| SelectionListBuilder builder = null; |
| try { |
| // listType can be null, meaning we will use the default selection list |
| String listType = selectionListElement.getAttribute("type"); |
| if ("".equals(listType)) { |
| listType = null; |
| } |
| |
| builder = (SelectionListBuilder)builderSelector.select(listType); |
| return builder.build(selectionListElement, definition.getDatatype()); |
| |
| } finally { |
| if (builder != null) { |
| builderSelector.release(builder); |
| } |
| this.serviceManager.release(builderSelector); |
| } |
| } |
| } |