org.apache.myfaces.custom.navmenu.htmlnavmenu.AbstractHtmlCommandNavigationItem Maven / Gradle / Ivy
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JSF components and utilities that can be used with any JSF implementation.
This library is compatible with both JSF1.1 and JSF1.2; however for JSF1.2 users there
is an alternative build of Tomahawk available that takes advantage of JSF1.2 features to
offer some additional benefits.
/*
* 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.custom.navmenu.htmlnavmenu;
import java.util.Iterator;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.component.html.ext.HtmlCommandLink;
/**
* Must be nested inside a panel_navigation action and renders a
* clickable navigation item.
*
* This action is derived from the standard command_link action
* and has equal attributes. (Replaces former "navigation_item"
* tag.)
*
* Unless otherwise specified, all attributes accept static
* values or EL expressions.
*
* Many thanks to the guys from Swiss Federal Institute of Intellectual Property and Marc Bouquet
* for helping to develop this component.
*
* @JSFComponent
* name = "t:commandNavigation2"
* class = "org.apache.myfaces.custom.navmenu.htmlnavmenu.HtmlCommandNavigationItem"
* tagClass = "org.apache.myfaces.custom.navmenu.htmlnavmenu.HtmlCommandNavigationItemTag"
* @since 1.1.7
* @author Manfred Geiler
* @author Thomas Spiegl
*/
public abstract class AbstractHtmlCommandNavigationItem extends HtmlCommandLink {
private static final Log log = LogFactory.getLog(AbstractHtmlCommandNavigationItem.class);
public static final String COMPONENT_TYPE = "org.apache.myfaces.HtmlCommandNavigationItem";
public static final String COMPONENT_FAMILY = "javax.faces.Command";
private static final String DEFAULT_RENDERER_TYPE = "org.apache.myfaces.NavigationMenu";
/**
* @JSFProperty
* defaultValue="true"
* tagExcluded="true"
*/
public boolean isImmediate() {
//always immediate
return true;
}
public void setImmediate(Boolean immediate) {
if (log.isWarnEnabled()) log.warn("Immediate property of HtmlCommandNavigation cannot be set --> ignored.");
}
/**
* Menu node is open.
*
* @JSFProperty
* localMethod="true"
* setMethod="true"
* defaultValue="false";
*/
public abstract boolean isOpen();
protected abstract boolean isSetOpen();
protected abstract boolean isLocalOpen();
public abstract void setOpen(boolean open);
public Boolean getOpenDirectly() {
if (isSetOpen())
return Boolean.valueOf(isLocalOpen());
else
return null;
}
public Boolean getActiveDirectly() {
if (isSetActive())
return Boolean.valueOf(isLocalActive());
else
return null;
}
/**
* Menu node is active.
*
* @JSFProperty
* localMethod="true"
* setMethod="true"
* defaultValue="false";
*/
public abstract boolean isActive();
protected abstract boolean isSetActive();
protected abstract boolean isLocalActive();
public abstract void setActive(boolean active);
/**
* A comma separated list of viewIds for which this item
* should be active.
*
* @JSFProperty
*/
public abstract String getActiveOnViewIds();
/**
* The external link where to redirect when this is clicked.
*
* @JSFProperty
*/
public abstract String getExternalLink();
/**
* @return false, if this item is child of another HtmlCommandNavigation, which is closed
*/
public boolean isRendered() {
if (! super.isRendered()) {
return false;
}
HtmlPanelNavigationMenu parentPanelNavMenu = getParentPanelNavigation();
if (parentPanelNavMenu != null && parentPanelNavMenu.isRenderAll())
return true;
UIComponent parent = getParent();
while (parent != null) {
if (parent instanceof AbstractHtmlCommandNavigationItem) {
if (!((AbstractHtmlCommandNavigationItem) parent).isOpen()) {
return false;
}
}
if (parent instanceof HtmlPanelNavigationMenu) {
break;
}
else {
parent = parent.getParent();
}
}
return true;
}
private HtmlPanelNavigationMenu getParentPanelNavigation() {
UIComponent parent = getParent();
// search HtmlPanelNavigation
UIComponent p = parent;
while (p != null && !(p instanceof HtmlPanelNavigationMenu)) {
p = p.getParent();
}
// p is now the HtmlPanelNavigation
if (!(p instanceof HtmlPanelNavigationMenu)) {
log.error("HtmlCommandNavigation without parent HtmlPanelNavigation ?!");
return null;
}
return (HtmlPanelNavigationMenu) p;
}
public void toggleOpen() {
HtmlPanelNavigationMenu menu = getParentPanelNavigation();
if (isOpen() && menu != null && !menu.isExpandAll()) {
if (getChildCount() > 0) {
//item is a menu group --> close item
setOpen(false);
}
}
else {
UIComponent parent = getParent();
//close all siblings
closeAllChildren(parent.getChildren().iterator(), this, true);
//open all parents (to be sure) and search HtmlPanelNavigation
UIComponent p = parent;
AbstractHtmlCommandNavigationItem rootItem = null;
while (p != null && !(p instanceof HtmlPanelNavigationMenu)) {
if (p instanceof AbstractHtmlCommandNavigationItem) {
rootItem = (AbstractHtmlCommandNavigationItem) p;
rootItem.setOpen(true);
}
p = p.getParent();
}
if (rootItem != null) {
List children = menu.getChildren();
for (int i = 0, sizei = children.size(); i < sizei; i++) {
Object obj = children.get(i);
if (obj != rootItem && obj instanceof AbstractHtmlCommandNavigationItem) {
((AbstractHtmlCommandNavigationItem)obj).setOpen(false);
}
}
}
// p is now the HtmlPanelNavigation
if (!(p instanceof HtmlPanelNavigationMenu)) {
log.error("HtmlCommandNavigation without parent HtmlPanelNavigation ?!");
}
else {
if (!hasCommandNavigationChildren() || ((HtmlPanelNavigationMenu) p).isExpandAll()) {
//item is an end node or Menu always expanded --> deactivate all other nodes, and then...
//deactivate all other items
deactivateAllChildren(p.getChildren().iterator());
//...activate this item
setActive(true);
}
else {
//open item
setOpen(true);
}
}
}
}
private boolean hasCommandNavigationChildren() {
if (getChildCount() == 0) {
return false;
}
List list = getChildren();
for (int i = 0, sizei = list.size(); i < sizei; i++) {
if (list.get(i) instanceof AbstractHtmlCommandNavigationItem) {
return true;
}
}
return false;
}
private static void deactivateAllChildren(Iterator children) {
while (children.hasNext()) {
UIComponent ni = (UIComponent) children.next();
if (ni instanceof AbstractHtmlCommandNavigationItem) {
((AbstractHtmlCommandNavigationItem) ni).setActive(false);
if (ni.getChildCount() > 0) {
deactivateAllChildren(ni.getChildren().iterator());
}
}
}
}
private static void closeAllChildren(Iterator children, AbstractHtmlCommandNavigationItem current, boolean resetActive) {
while (children.hasNext()) {
UIComponent ni = (UIComponent) children.next();
if (ni instanceof AbstractHtmlCommandNavigationItem) {
((AbstractHtmlCommandNavigationItem) ni).setOpen(false);
if (resetActive)
((AbstractHtmlCommandNavigationItem) ni).setActive(false);
if (ni.getChildCount() > 0) {
closeAllChildren(ni.getChildren().iterator(), current, current != ni);
}
}
}
}
public String[] getActiveOnVieIds() {
String value = getActiveOnViewIds();
if (value == null)
return new String[]{};
return value.split(",");
}
public void deactivateAll() {
UIComponent parent = this.getParent();
while (!(parent instanceof HtmlPanelNavigationMenu) && parent != null) {
parent = parent.getParent();
}
if (parent == null) {
throw new IllegalStateException("no PanelNavigationMenu!");
}
HtmlPanelNavigationMenu root = (HtmlPanelNavigationMenu) parent;
for (Iterator it = root.getChildren().iterator(); it.hasNext();) {
Object o = it.next();
if (o instanceof AbstractHtmlCommandNavigationItem) {
AbstractHtmlCommandNavigationItem navItem = (AbstractHtmlCommandNavigationItem) o;
navItem.setActive(false);
if (navItem.getChildCount() > 0) {
navItem.deactivateChildren();
}
}
}
}
public void deactivateChildren() {
for (Iterator it = this.getChildren().iterator(); it.hasNext();) {
Object o = it.next();
if (o instanceof AbstractHtmlCommandNavigationItem) {
AbstractHtmlCommandNavigationItem current = (AbstractHtmlCommandNavigationItem) o;
current.setActive(false);
if (current.getChildCount() > 0) {
current.deactivateChildren();
}
}
}
}
public void broadcast(FacesEvent event) throws AbortProcessingException {
if (event instanceof ActionEvent) {
ActionEvent actionEvent = (ActionEvent) event;
if (actionEvent.getPhaseId() == PhaseId.APPLY_REQUEST_VALUES) {
AbstractHtmlCommandNavigationItem navItem = (AbstractHtmlCommandNavigationItem) actionEvent.getComponent();
navItem.toggleOpen();
FacesContext.getCurrentInstance().renderResponse();
}
}
super.broadcast(event);
}
}