001/*
002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a>
018 *
019 * $Id: DirectorySelectManyWidgetTypeHandler.java 30416 2008-02-21 19:10:37Z atchertchian $
020 */
021
022package org.nuxeo.ecm.platform.forms.layout.facelets.plugins;
023
024import java.io.IOException;
025import java.io.Serializable;
026import java.util.ArrayList;
027import java.util.List;
028import java.util.Map;
029
030import javax.faces.component.UIComponent;
031import javax.faces.component.html.HtmlColumn;
032import javax.faces.component.html.HtmlDataTable;
033import javax.faces.component.html.HtmlOutputText;
034import javax.faces.component.html.HtmlSelectManyListbox;
035import javax.faces.view.facelets.ComponentHandler;
036import javax.faces.view.facelets.CompositeFaceletHandler;
037import javax.faces.view.facelets.FaceletContext;
038import javax.faces.view.facelets.FaceletHandler;
039import javax.faces.view.facelets.TagAttribute;
040import javax.faces.view.facelets.TagAttributes;
041import javax.faces.view.facelets.TagConfig;
042
043import org.nuxeo.ecm.platform.forms.layout.api.BuiltinWidgetModes;
044import org.nuxeo.ecm.platform.forms.layout.api.FieldDefinition;
045import org.nuxeo.ecm.platform.forms.layout.api.Widget;
046import org.nuxeo.ecm.platform.forms.layout.api.exceptions.WidgetException;
047import org.nuxeo.ecm.platform.forms.layout.facelets.FaceletHandlerHelper;
048import org.nuxeo.ecm.platform.forms.layout.facelets.ValueExpressionHelper;
049import org.nuxeo.ecm.platform.ui.web.component.list.UIEditableList;
050import org.nuxeo.ecm.platform.ui.web.component.seam.UIHtmlText;
051import org.nuxeo.ecm.platform.ui.web.directory.DirectoryEntryOutputComponent;
052
053import com.sun.faces.facelets.tag.TagAttributesImpl;
054
055/**
056 * Select many directory widget
057 *
058 * @author <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a>
059 */
060public class DirectorySelectManyWidgetTypeHandler extends AbstractDirectorySelectWidgetTypeHandler {
061
062    public DirectorySelectManyWidgetTypeHandler(TagConfig config) {
063        super(config);
064    }
065
066    protected String getEditComponentType() {
067        return HtmlSelectManyListbox.COMPONENT_TYPE;
068    }
069
070    @Override
071    public void apply(FaceletContext ctx, UIComponent parent, Widget widget) throws WidgetException, IOException {
072        String mode = widget.getMode();
073        if (BuiltinWidgetModes.EDIT.equals(mode)) {
074            super.apply(ctx, parent, widget, getEditComponentType());
075            return;
076        }
077
078        FaceletHandlerHelper helper = new FaceletHandlerHelper(tagConfig);
079        FaceletHandler leaf = getNextHandler(ctx, tagConfig, widget, null, helper);
080        String widgetName = widget.getName();
081        String widgetTagConfigId = widget.getTagConfigId();
082
083        // build value attribute for iteration component
084        String valueAttributeName = "value";
085        Map<String, Serializable> properties = widget.getProperties();
086        TagAttribute valueAttr = null;
087        if (properties.containsKey("value")) {
088            valueAttr = helper.createAttribute(valueAttributeName, (String) properties.get("value"));
089        }
090        FieldDefinition[] fields = widget.getFieldDefinitions();
091        if (fields != null && fields.length > 0) {
092            FieldDefinition field = fields[0];
093            valueAttr = helper.createAttribute(valueAttributeName,
094                    ValueExpressionHelper.createExpressionString(widget.getValueName(), field));
095        }
096        if (valueAttr == null) {
097            // don't bother
098            return;
099        }
100
101        // build directory item attributes, using widget properties
102        List<TagAttribute> attrs = new ArrayList<TagAttribute>();
103        for (Map.Entry<String, Serializable> property : properties.entrySet()) {
104            if (!"value".equals(property.getKey())) {
105                Serializable value = property.getValue();
106                TagAttribute attr = null;
107                if (value instanceof String) {
108                    attr = helper.createAttribute(property.getKey(), (String) value);
109                } else if (value != null) {
110                    attr = helper.createAttribute(property.getKey(), value.toString());
111                }
112                if (attr != null) {
113                    attrs.add(attr);
114                }
115            }
116        }
117        if (BuiltinWidgetModes.isLikePlainMode(mode)) {
118            attrs.add(helper.createAttribute("value", "#{model.rowData}"));
119        } else {
120            attrs.add(helper.createAttribute("value", "#{item}"));
121        }
122        TagAttributes dirEntryAttrs = FaceletHandlerHelper.getTagAttributes(attrs);
123        ComponentHandler dirEntry = helper.getHtmlComponentHandler(widgetTagConfigId, dirEntryAttrs, leaf,
124                DirectoryEntryOutputComponent.COMPONENT_TYPE, null);
125
126        if (BuiltinWidgetModes.isLikePlainMode(mode)) {
127            // use an iteration and a comma to separate items instead of an
128            // HTML table component
129            TagAttributes commaAttributes = FaceletHandlerHelper.getTagAttributes(
130                    helper.createAttribute("value", ", "),
131                    helper.createAttribute("rendered", "#{model.rowIndex < model.rowCount}"));
132            ComponentHandler commaHandler = helper.getHtmlComponentHandler(widgetTagConfigId, commaAttributes, leaf,
133                    HtmlOutputText.COMPONENT_TYPE, null);
134
135            CompositeFaceletHandler childHandler = new CompositeFaceletHandler(new FaceletHandler[] { dirEntry,
136                    commaHandler });
137
138            TagAttributes itAttributes = FaceletHandlerHelper.getTagAttributes(valueAttr,
139                    helper.createAttribute("model", "model"));
140            ComponentHandler itHandler = helper.getHtmlComponentHandler(widgetTagConfigId, itAttributes, childHandler,
141                    UIEditableList.COMPONENT_TYPE, null);
142            itHandler.apply(ctx, parent);
143        } else {
144            // build a standard table
145            ComponentHandler columnEntry = helper.getHtmlComponentHandler(widgetTagConfigId,
146                    FaceletHandlerHelper.getTagAttributes(), dirEntry, HtmlColumn.COMPONENT_TYPE, null);
147
148            TagAttributes iterationAttributes = FaceletHandlerHelper.getTagAttributes(
149                    helper.createIdAttribute(ctx, widgetName), valueAttr, helper.createAttribute("var", "item"));
150
151            ComponentHandler table = helper.getHtmlComponentHandler(widgetTagConfigId, iterationAttributes,
152                    columnEntry, HtmlDataTable.COMPONENT_TYPE, null);
153
154            if (BuiltinWidgetModes.PDF.equals(mode)) {
155                // add a surrounding p:html tag handler
156                FaceletHandler h = helper.getHtmlComponentHandler(widgetTagConfigId, new TagAttributesImpl(
157                        new TagAttribute[0]), table, UIHtmlText.class.getName(), null);
158                h.apply(ctx, parent);
159            } else {
160                table.apply(ctx, parent);
161            }
162        }
163    }
164}