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org.primefaces.component.tree.TreeRenderer Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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.primefaces.component.tree;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.component.UINamingContainer;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.component.api.UITree;
import org.primefaces.context.RequestContext;
import org.primefaces.model.TreeNode;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.renderkit.RendererUtils;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.SharedStringBuilder;
import org.primefaces.util.WidgetBuilder;
public class TreeRenderer extends CoreRenderer {
private static final String SB_DECODE_SELECTION = TreeRenderer.class.getName() + "#decodeSelection";
protected enum NodeOrder {
FIRST,
MIDDLE,
LAST,
NONE
}
@Override
public void decode(FacesContext context, UIComponent component) {
Tree tree = (Tree) component;
if(tree.isDragDropRequest(context)) {
decodeDragDrop(context, tree);
}
if(tree.getSelectionMode() != null) {
decodeSelection(context, tree);
}
decodeBehaviors(context, tree);
}
public void decodeSelection(FacesContext context, Tree tree) {
Map params = context.getExternalContext().getRequestParameterMap();
String clientId = tree.getClientId(context);
String selection = params.get(clientId + "_selection");
boolean isSingle = tree.getSelectionMode().equalsIgnoreCase("single");
if(isValueBlank(selection)) {
if(isSingle)
tree.setSelection(null);
else
tree.setSelection(new TreeNode[0]);
}
else {
String[] selectedRowKeys = selection.split(",");
if(isSingle) {
tree.setRowKey(selectedRowKeys[0]);
tree.setSelection(tree.getRowNode());
}
else {
TreeNode[] selectedNodes = new TreeNode[selectedRowKeys.length];
for(int i = 0 ; i < selectedRowKeys.length; i++) {
tree.setRowKey(selectedRowKeys[i]);
selectedNodes[i] = tree.getRowNode();
}
tree.setSelection(selectedNodes);
}
tree.setRowKey(null);
}
if(tree.isCheckboxSelection() && tree.isDynamic() && tree.isSelectionRequest(context)) {
String selectedNodeRowKey = params.get(clientId + "_instantSelection");
tree.setRowKey(selectedNodeRowKey);
TreeNode selectedNode = tree.getRowNode();
List descendantRowKeys = new ArrayList();
tree.populateRowKeys(selectedNode, descendantRowKeys);
int size = descendantRowKeys.size();
StringBuilder sb = SharedStringBuilder.get(context, SB_DECODE_SELECTION);
for(int i = 0; i < size; i++) {
sb.append(descendantRowKeys.get(i));
if(i != (size - 1)) {
sb.append(",");
}
}
RequestContext.getCurrentInstance().addCallbackParam("descendantRowKeys", sb.toString());
sb.setLength(0);
descendantRowKeys = null;
}
}
public void decodeDragDrop(FacesContext context, Tree tree) {
Map params = context.getExternalContext().getRequestParameterMap();
String clientId = tree.getClientId(context);
String dragNodeRowKey = params.get(clientId + "_dragNode");
String dropNodeRowKey = params.get(clientId + "_dropNode");
String dragSource = params.get(clientId + "_dragSource");
int dndIndex = Integer.parseInt(params.get(clientId + "_dndIndex"));
TreeNode dragNode;
TreeNode dropNode;
if(dragSource.equals(clientId)) {
tree.setRowKey(dragNodeRowKey);
dragNode = tree.getRowNode();
}
else {
Tree otherTree = (Tree) tree.findComponent(":" + dragSource);
otherTree.setRowKey(dragNodeRowKey);
dragNode = otherTree.getRowNode();
}
if(isValueBlank(dropNodeRowKey)) {
dropNode = tree.getValue();
}
else {
tree.setRowKey(dropNodeRowKey);
dropNode = tree.getRowNode();
}
tree.setDragNode(dragNode);
tree.setDropNode(dropNode);
if(dndIndex >= 0 && dndIndex < dropNode.getChildCount())
dropNode.getChildren().add(dndIndex, dragNode);
else
dropNode.getChildren().add(dragNode);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
Tree tree = (Tree) component;
if(tree.isNodeExpandRequest(context)) {
boolean vertical = tree.getOrientation().equals("vertical");
String clientId = tree.getClientId(context);
Map params = context.getExternalContext().getRequestParameterMap();
String rowKey = params.get(clientId + "_expandNode");
if(!vertical && rowKey.equals("root")) {
encodeHorizontalTreeNodeChildren(context, tree, tree.getValue(), tree.getClientId(context), null, tree.isDynamic(), tree.isCheckboxSelection());
}
else {
tree.setRowKey(rowKey);
TreeNode node = tree.getRowNode();
node.setExpanded(true);
if(vertical) {
encodeTreeNodeChildren(context, tree, node, clientId, tree.isDynamic(), tree.isCheckboxSelection(), tree.isDroppable());
}
else {
encodeHorizontalTreeNodeChildren(context, tree, node, tree.getClientId(context), rowKey, tree.isDynamic(), tree.isCheckboxSelection());
}
tree.setRowKey(null);
}
}
else {
encodeMarkup(context, tree);
encodeScript(context, tree);
}
}
protected void encodeScript(FacesContext context, Tree tree) throws IOException {
String clientId = tree.getClientId(context);
boolean dynamic = tree.isDynamic();
String selectionMode = tree.getSelectionMode();
String widget = tree.getOrientation().equals("vertical") ? "VerticalTree" : "HorizontalTree";
WidgetBuilder wb = getWidgetBuilder(context);
wb.initWithDomReady(widget, tree.resolveWidgetVar(), clientId);
wb.attr("dynamic", dynamic)
.attr("highlight", tree.isHighlight(), true)
.attr("animate", tree.isAnimate(), false)
.attr("droppable", tree.isDroppable(), false)
.attr("cache", tree.isCache() && dynamic)
.attr("dragdropScope", tree.getDragdropScope(), null)
.callback("onNodeClick", "function(node, event)", tree.getOnNodeClick());
//selection
if(selectionMode != null) {
wb.attr("selectionMode", selectionMode);
wb.attr("propagateUp", tree.isPropagateSelectionUp());
wb.attr("propagateDown", tree.isPropagateSelectionDown());
}
if(tree.isDraggable()) {
wb.attr("draggable", true)
.attr("dragMode", tree.getDragMode())
.attr("dropRestrict", tree.getDropRestrict());
}
encodeIconStates(context, tree, wb);
encodeClientBehaviors(context, tree);
wb.finish();
}
protected void encodeMarkup(FacesContext context, Tree tree) throws IOException {
boolean vertical = tree.getOrientation().equals("vertical");
TreeNode root = (TreeNode) tree.getValue();
if(root != null && root.getRowKey() == null) {
root.setRowKey("root");
tree.buildRowKeys(root);
tree.initPreselection();
}
if(vertical)
encodeVerticalTree(context, tree, root);
else
encodeHorizontalTree(context, tree, root);
}
public void encodeVerticalTree(FacesContext context, Tree tree, TreeNode root) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = tree.getClientId(context);
boolean dynamic = tree.isDynamic();
String selectionMode = tree.getSelectionMode();
boolean selectable = selectionMode != null;
boolean multiselectable = selectable && selectionMode.equals("single");
boolean checkbox = selectable && selectionMode.equals("checkbox");
boolean droppable = tree.isDroppable();
if(root != null && root.getRowKey() == null) {
root.setRowKey("root");
tree.buildRowKeys(root);
tree.initPreselection();
}
//enable RTL
if(ComponentUtils.isRTL(context, tree)) {
tree.setRTLRendering(true);
}
//container class
String containerClass = tree.isRTLRendering() ? Tree.CONTAINER_RTL_CLASS : Tree.CONTAINER_CLASS;
if(tree.getStyleClass() != null) {
containerClass = containerClass + " " + tree.getStyleClass();
}
writer.startElement("div", tree);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("class", containerClass, null);
writer.writeAttribute("role", "tree", null);
writer.writeAttribute("aria-multiselectable", String.valueOf(multiselectable), null);
if(tree.getStyle() != null) {
writer.writeAttribute("style", tree.getStyle(), null);
}
writer.startElement("ul", null);
writer.writeAttribute("class", Tree.ROOT_NODES_CLASS, null);
if(root != null) {
encodeTreeNodeChildren(context, tree, root, clientId, dynamic, checkbox, droppable);
}
writer.endElement("ul");
if(selectable) {
encodeSelectionHolder(context, tree);
}
writer.endElement("div");
}
protected void encodeHorizontalTree(FacesContext context, Tree tree, TreeNode root) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = tree.getClientId(context);
boolean dynamic = tree.isDynamic();
String selectionMode = tree.getSelectionMode();
boolean checkbox = (selectionMode != null) && selectionMode.equals("checkbox");
String containerClass = tree.getStyleClass() == null ? Tree.HORIZONTAL_CONTAINER_CLASS : Tree.HORIZONTAL_CONTAINER_CLASS + " " + tree.getStyleClass();
writer.startElement("div", tree);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("class", containerClass, null);
writer.writeAttribute("role", "tree", null);
if(root != null) {
encodeHorizontalTreeNode(context, tree, root, clientId, null, NodeOrder.NONE, dynamic, checkbox);
}
if(selectionMode != null) {
encodeSelectionHolder(context, tree);
}
writer.endElement("div");
}
protected void encodeHorizontalTreeNode(FacesContext context, Tree tree, TreeNode node, String clientId, String rowKey, NodeOrder nodeOrder, boolean dynamic, boolean checkbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
UITreeNode uiTreeNode = tree.getUITreeNodeByType(node.getType());
boolean expanded = node.isExpanded();
boolean leaf = node.isLeaf();
boolean selectable = node.isSelectable();
boolean partialSelected = node.isPartialSelected();
boolean selected = node.isSelected();
String nodeClass;
if(leaf) {
nodeClass = Tree.LEAF_NODE_CLASS;
}
else {
nodeClass = Tree.PARENT_NODE_CLASS;
nodeClass = expanded ? nodeClass + " ui-treenode-expanded" : nodeClass + " ui-treenode-collapsed";
}
if(selected)
nodeClass += " ui-treenode-selected";
else if(partialSelected)
nodeClass += " ui-treenode-hasselected";
else
nodeClass += " ui-treenode-unselected";
writer.startElement("table", tree);
writer.startElement("tbody", null);
writer.startElement("tr", null);
//connector
if(nodeOrder != NodeOrder.NONE) {
encodeConnector(context, tree, nodeOrder);
}
//node
writer.startElement("td", null);
writer.writeAttribute("class", nodeClass, null);
writer.writeAttribute("data-nodetype", uiTreeNode.getType(), null);
if(rowKey != null) {
tree.setRowKey(rowKey);
writer.writeAttribute("data-rowkey", rowKey, null);
}
else {
context.getExternalContext().getRequestMap().put(tree.getVar(), tree.getValue().getData());
writer.writeAttribute("data-rowkey", "root", null);
}
String nodeContentClass = node.isSelectable() ? Tree.SELECTABLE_NODE_CONTENT_CLASS_H : Tree.NODE_CONTENT_CLASS_H;
if(selected) {
nodeContentClass += " ui-state-highlight";
}
writer.startElement("div", null);
writer.writeAttribute("class", nodeContentClass, null);
//toggler
if(!leaf) {
String toggleIcon = expanded ? Tree.EXPANDED_ICON_CLASS_H : Tree.COLLAPSED_ICON_CLASS_H;
writer.startElement("span", null);
writer.writeAttribute("class", toggleIcon, null);
writer.endElement("span");
}
//checkbox
if(checkbox && selectable) {
RendererUtils.encodeCheckbox(context, selected, partialSelected);
}
//icon
encodeIcon(context, uiTreeNode, expanded);
uiTreeNode.encodeAll(context);
writer.endElement("div");
writer.endElement("td");
//children
if(!leaf) {
writer.startElement("td", null);
writer.writeAttribute("class", "ui-treenode-children-container", null);
if(!expanded) {
writer.writeAttribute("style", "display:none", null);
}
writer.startElement("div", null);
writer.writeAttribute("class", Tree.CHILDREN_NODES_CLASS, null);
if((dynamic && expanded) || !dynamic) {
encodeHorizontalTreeNodeChildren(context, tree, node, clientId, rowKey, dynamic, checkbox);
}
writer.endElement("div");
writer.endElement("td");
}
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
}
protected void encodeHorizontalTreeNodeChildren(FacesContext context, Tree tree, TreeNode node, String clientId, String rowKey, boolean dynamic, boolean checkbox) throws IOException {
int childIndex = 0;
for(Iterator iterator = node.getChildren().iterator(); iterator.hasNext();) {
String childRowKey = rowKey == null ? String.valueOf(childIndex) : rowKey + UITree.SEPARATOR + childIndex;
NodeOrder no = null;
if(node.getChildCount() == 1) {
no = NodeOrder.NONE;
} else if(childIndex == 0) {
no = NodeOrder.FIRST;
} else if(childIndex == (node.getChildCount() - 1)) {
no = NodeOrder.LAST;
} else {
no = NodeOrder.MIDDLE;
}
encodeHorizontalTreeNode(context, tree, iterator.next(), clientId, childRowKey, no, dynamic, checkbox);
childIndex++;
}
}
protected void encodeConnector(FacesContext context, Tree tree, NodeOrder nodeOrder) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("td", null);
writer.writeAttribute("class", "ui-treenode-connector", null);
writer.startElement("table", null);
writer.writeAttribute("class", "ui-treenode-connector-table", null);
writer.startElement("tbody", null);
writer.startElement("tr", null);
writer.startElement("td", null);
if(!nodeOrder.equals(NodeOrder.FIRST)) {
writer.writeAttribute("class", "ui-treenode-connector-line", null);
}
writer.endElement("td");
writer.endElement("tr");
writer.startElement("tr", null);
writer.startElement("td", null);
if(!nodeOrder.equals(NodeOrder.LAST)) {
writer.writeAttribute("class", "ui-treenode-connector-line", null);
}
writer.endElement("td");
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
writer.endElement("td");
}
public void encodeTreeNode(FacesContext context, Tree tree, TreeNode node, String clientId, boolean dynamic, boolean checkbox, boolean dragdrop) throws IOException {
//preselection
String rowKey = node.getRowKey();
boolean selected = node.isSelected();
boolean partialSelected = node.isPartialSelected();
UITreeNode uiTreeNode = tree.getUITreeNodeByType(node.getType());
if(!uiTreeNode.isRendered()) {
return;
}
ResponseWriter writer = context.getResponseWriter();
tree.setRowKey(rowKey);
boolean isLeaf = node.isLeaf();
boolean expanded = node.isExpanded();
boolean selectable = node.isSelectable();
String toggleIcon = expanded ? Tree.EXPANDED_ICON_CLASS_V : (tree.isRTLRendering() ? Tree.COLLAPSED_ICON_RTL_CLASS_V : Tree.COLLAPSED_ICON_CLASS_V);
String stateIcon = isLeaf ? Tree.LEAF_ICON_CLASS : toggleIcon;
Object datakey = tree.getDatakey();
String nodeId = clientId + UINamingContainer.getSeparatorChar(context) + rowKey;
//style class of node
String containerClass = isLeaf ? Tree.LEAF_NODE_CLASS : Tree.PARENT_NODE_CLASS;
if(selected)
containerClass += " ui-treenode-selected";
else if(partialSelected)
containerClass += " ui-treenode-hasselected";
else
containerClass += " ui-treenode-unselected";
containerClass = uiTreeNode.getStyleClass() == null ? containerClass : containerClass + " " + uiTreeNode.getStyleClass();
writer.startElement("li", null);
writer.writeAttribute("id", nodeId, null);
writer.writeAttribute("data-rowkey", rowKey, null);
writer.writeAttribute("data-nodetype", uiTreeNode.getType(), null);
writer.writeAttribute("class", containerClass, null);
writer.writeAttribute("role", "treeitem", null);
if(datakey != null) {
writer.writeAttribute("data-datakey", datakey, null);
}
//content
String contentClass = selectable ? Tree.SELECTABLE_NODE_CONTENT_CLASS_V : Tree.NODE_CONTENT_CLASS_V;
if(dragdrop) {
contentClass += " ui-treenode-droppable";
}
writer.startElement("span", null);
writer.writeAttribute("class", contentClass, null);
writer.writeAttribute("aria-expanded", String.valueOf(expanded), null);
writer.writeAttribute("aria-selected", String.valueOf(selected), null);
if(checkbox) {
writer.writeAttribute("aria-checked", String.valueOf(selected), null);
}
//state icon
writer.startElement("span", null);
writer.writeAttribute("class", stateIcon, null);
writer.endElement("span");
//checkbox
if(checkbox && selectable) {
RendererUtils.encodeCheckbox(context, selected, partialSelected);
}
//node icon
encodeIcon(context, uiTreeNode, expanded);
//label
String nodeLabelClass = selected? Tree.NODE_LABEL_CLASS + " ui-state-highlight" : Tree.NODE_LABEL_CLASS;
writer.startElement("span", null);
writer.writeAttribute("class", nodeLabelClass, null);
uiTreeNode.encodeAll(context);
writer.endElement("span");
writer.endElement("span");
//children nodes
writer.startElement("ul", null);
writer.writeAttribute("class", Tree.CHILDREN_NODES_CLASS , null);
if(!expanded) {
writer.writeAttribute("style", "display:none", null);
}
if((dynamic && expanded) || !dynamic) {
encodeTreeNodeChildren(context, tree, node, clientId, dynamic, checkbox, dragdrop);
}
writer.endElement("ul");
writer.endElement("li");
if(dragdrop) {
encodeDropTarget(context, tree);
}
}
public void encodeTreeNodeChildren(FacesContext context, Tree tree, TreeNode node, String clientId, boolean dynamic, boolean checkbox, boolean droppable) throws IOException {
int childCount = node.getChildCount();
if(childCount > 0) {
for(int i = 0; i < childCount; i++) {
if(i == 0 && droppable) {
encodeDropTarget(context, tree);
}
encodeTreeNode(context, tree, node.getChildren().get(i), clientId, dynamic, checkbox, droppable);
}
}
}
protected void encodeDropTarget(FacesContext context, Tree tree) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("li", null);
writer.writeAttribute("class", "ui-tree-droppoint", null);
writer.endElement("li");
}
protected void encodeIconStates(FacesContext context, Tree tree, WidgetBuilder wb) throws IOException {
Map nodes = tree.getTreeNodes();
wb.append(",iconStates:{");
boolean firstWritten = false;
for(Iterator it = nodes.keySet().iterator(); it.hasNext();) {
String type = it.next();
UITreeNode node = nodes.get(type);
String expandedIcon = node.getExpandedIcon();
String collapsedIcon = node.getCollapsedIcon();
if(expandedIcon != null && collapsedIcon != null) {
if(firstWritten) {
wb.append(",");
}
wb.append("'" + node.getType() + "' : {");
wb.append("expandedIcon:'" + expandedIcon + "'");
wb.append(",collapsedIcon:'" + collapsedIcon + "'");
wb.append("}");
firstWritten = true;
}
}
wb.append("}");
}
protected void encodeIcon(FacesContext context, UITreeNode uiTreeNode, boolean expanded) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("span", null);
String icon = uiTreeNode.getIconToRender(expanded);
if(icon != null) {
writer.writeAttribute("class", Tree.NODE_ICON_CLASS + " " + icon, null);
}
writer.endElement("span");
}
protected void encodeSelectionHolder(FacesContext context, Tree tree) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String id = tree.getClientId(context) + "_selection";
writer.startElement("input", null);
writer.writeAttribute("type", "hidden", null);
writer.writeAttribute("id", id, null);
writer.writeAttribute("name", id, null);
writer.writeAttribute("value", tree.getSelectedRowKeysAsString(), null);
writer.writeAttribute("autocomplete", "off", null);
writer.endElement("input");
}
protected void encodeCheckbox(FacesContext context, Tree tree, TreeNode node, boolean selected) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String iconClass = selected ? HTML.CHECKBOX_CHECKED_ICON_CLASS : HTML.CHECKBOX_UNCHECKED_ICON_CLASS;
writer.startElement("div", null);
writer.writeAttribute("class", HTML.CHECKBOX_CLASS, null);
writer.startElement("div", null);
writer.writeAttribute("class", HTML.CHECKBOX_BOX_CLASS, null);
writer.startElement("span", null);
writer.writeAttribute("class", iconClass, null);
writer.endElement("span");
writer.endElement("div");
writer.endElement("div");
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Do nothing
}
@Override
public boolean getRendersChildren() {
return true;
}
}
