| /* |
| * 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.myfaces.tobago.internal.renderkit.renderer; |
| |
| import org.apache.myfaces.tobago.context.Markup; |
| import org.apache.myfaces.tobago.internal.component.AbstractUIData; |
| import org.apache.myfaces.tobago.internal.component.AbstractUIStyle; |
| import org.apache.myfaces.tobago.internal.component.AbstractUITree; |
| import org.apache.myfaces.tobago.internal.component.AbstractUITreeNode; |
| import org.apache.myfaces.tobago.internal.util.HtmlRendererUtils; |
| import org.apache.myfaces.tobago.internal.util.JsonUtils; |
| import org.apache.myfaces.tobago.internal.util.RenderUtils; |
| import org.apache.myfaces.tobago.model.ExpandedState; |
| import org.apache.myfaces.tobago.model.Selectable; |
| import org.apache.myfaces.tobago.model.SelectedState; |
| import org.apache.myfaces.tobago.model.TreePath; |
| import org.apache.myfaces.tobago.renderkit.RendererBase; |
| import org.apache.myfaces.tobago.renderkit.css.TobagoClass; |
| import org.apache.myfaces.tobago.renderkit.html.CustomAttributes; |
| import org.apache.myfaces.tobago.renderkit.html.DataAttributes; |
| import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes; |
| import org.apache.myfaces.tobago.renderkit.html.HtmlElements; |
| import org.apache.myfaces.tobago.renderkit.html.HtmlInputTypes; |
| import org.apache.myfaces.tobago.util.ComponentUtils; |
| import org.apache.myfaces.tobago.webapp.TobagoResponseWriter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.faces.component.UIComponent; |
| import javax.faces.context.FacesContext; |
| import java.io.IOException; |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class TreeRenderer extends RendererBase { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| protected static final String SCROLL_POSITION = "scrollPosition"; |
| |
| @Override |
| public void decode(final FacesContext facesContext, final UIComponent component) { |
| final AbstractUITree tree = (AbstractUITree) component; |
| final String value = facesContext.getExternalContext().getRequestParameterMap().get( |
| tree.getClientId(facesContext) + ComponentUtils.SUB_SEPARATOR + SCROLL_POSITION); |
| if (value != null) { |
| tree.getState().getScrollPosition().update(value); |
| } |
| RenderUtils.decodedStateOfTreeData(facesContext, tree); |
| } |
| |
| @Override |
| public boolean getRendersChildren() { |
| return true; |
| } |
| |
| @Override |
| public void encodeChildren(final FacesContext facesContext, final UIComponent component) throws IOException { |
| final AbstractUITree tree = (AbstractUITree) component; |
| for (final UIComponent child : tree.getChildren()) { |
| if (child instanceof AbstractUIStyle) { |
| child.encodeAll(facesContext); |
| } |
| } |
| } |
| |
| @Override |
| public void encodeEnd(final FacesContext facesContext, final UIComponent component) throws IOException { |
| |
| final TobagoResponseWriter writer = getResponseWriter(facesContext); |
| final AbstractUITree tree = (AbstractUITree) component; |
| final String clientId = tree.getClientId(facesContext); |
| final Markup markup = tree.getMarkup(); |
| final UIComponent root = ComponentUtils.findDescendant(tree, AbstractUITreeNode.class); |
| if (root == null) { |
| LOG.error("Can't find the tree root. This may occur while updating a tree from Tobago 1.0 to 1.5. " |
| + "Please refer the documentation to see how to use tree tags."); |
| return; |
| } |
| |
| writer.startElement(HtmlElements.TOBAGO_TREE); |
| writer.writeIdAttribute(clientId); |
| writer.writeClassAttribute( |
| tree.getCustomClass(), |
| TobagoClass.TREE.createMarkup(markup)); |
| HtmlRendererUtils.writeDataAttributes(facesContext, writer, tree); |
| writer.writeAttribute(DataAttributes.SCROLL_PANEL, Boolean.TRUE.toString(), false); |
| |
| final Selectable selectable = tree.getSelectable(); |
| if (selectable.isSupportedByTree()) { |
| writer.writeAttribute(DataAttributes.SELECTABLE, selectable.name(), false); |
| writer.writeAttribute(CustomAttributes.SELECTABLE, selectable.name(), false); |
| } |
| |
| final SelectedState selectedState = tree.getSelectedState(); |
| final List<Integer> selectedValue = new ArrayList<>(); |
| |
| final ExpandedState expandedState = tree.getExpandedState(); |
| final List<Integer> expandedValue = new ArrayList<>(); |
| |
| final int last = tree.isRowsUnlimited() ? Integer.MAX_VALUE : tree.getFirst() + tree.getRows(); |
| for (int rowIndex = tree.getFirst(); rowIndex < last; rowIndex++) { |
| tree.setRowIndex(rowIndex); |
| if (!tree.isRowAvailable()) { |
| break; |
| } |
| |
| final TreePath path = tree.getPath(); |
| |
| if (selectedState.isSelected(path)) { |
| selectedValue.add(rowIndex); |
| } |
| |
| if (tree.isFolder() && expandedState.isExpanded(path)) { |
| expandedValue.add(rowIndex); |
| } |
| |
| for (final UIComponent child : tree.getChildren()) { |
| if (child instanceof AbstractUIStyle) { |
| // ignore, this is rendered in encodeChildren() |
| } else { |
| child.encodeAll(facesContext); |
| } |
| } |
| } |
| tree.setRowIndex(-1); |
| |
| writer.startElement(HtmlElements.INPUT); |
| writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN); |
| final String selectedId = clientId + ComponentUtils.SUB_SEPARATOR + AbstractUITree.SUFFIX_SELECTED; |
| writer.writeNameAttribute(selectedId); |
| writer.writeIdAttribute(selectedId); |
| writer.writeClassAttribute(TobagoClass.TREE__SELECTED); |
| writer.writeAttribute(HtmlAttributes.VALUE, JsonUtils.encode(selectedValue), false); |
| writer.endElement(HtmlElements.INPUT); |
| |
| writer.startElement(HtmlElements.INPUT); |
| writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN); |
| final String expandedId = clientId + ComponentUtils.SUB_SEPARATOR + AbstractUIData.SUFFIX_EXPANDED; |
| writer.writeNameAttribute(expandedId); |
| writer.writeIdAttribute(expandedId); |
| writer.writeClassAttribute(TobagoClass.TREE__EXPANDED); |
| writer.writeAttribute(HtmlAttributes.VALUE, JsonUtils.encode(expandedValue), false); |
| writer.endElement(HtmlElements.INPUT); |
| |
| writer.startElement(HtmlElements.INPUT); |
| writer.writeIdAttribute(clientId + ComponentUtils.SUB_SEPARATOR + SCROLL_POSITION); |
| writer.writeNameAttribute(clientId + ComponentUtils.SUB_SEPARATOR + SCROLL_POSITION); |
| writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN); |
| writer.writeAttribute(HtmlAttributes.VALUE, tree.getState().getScrollPosition().encode(), false); |
| writer.writeAttribute(DataAttributes.SCROLL_POSITION, Boolean.TRUE.toString(), false); |
| writer.endElement(HtmlElements.INPUT); |
| |
| writer.endElement(HtmlElements.TOBAGO_TREE); |
| } |
| } |