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PrimeFaces Extensions Project for Maven.
/*
* Copyright (c) 2011-2024 PrimeFaces Extensions
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.extensions.component.masterdetail;
import java.util.Map;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.application.ResourceDependency;
import javax.faces.component.UIComponent;
import javax.faces.component.UIComponentBase;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialViewContext;
import javax.faces.event.ComponentSystemEvent;
import javax.faces.event.PostRestoreStateEvent;
import org.primefaces.component.breadcrumb.BreadCrumb;
import org.primefaces.model.menu.DefaultMenuItem;
import org.primefaces.model.menu.MenuModel;
import org.primefaces.util.Constants;
import org.primefaces.util.LangUtils;
/**
* MasterDetail component.
*
* @author Oleg Varaksin / last modified by $Author$
* @version $Revision$
* @since 0.2
*/
@ResourceDependency(library = "primefaces-extensions", name = "primefaces-extensions.css")
public class MasterDetail extends UIComponentBase {
public static final String CONTEXT_VALUE_VALUE_EXPRESSION = "mdContextValueVE";
public static final String SELECTED_LEVEL_VALUE_EXPRESSION = "selectedLevelVE";
public static final String SELECTED_STEP_VALUE_EXPRESSION = "selectedStepVE";
public static final String PRESERVE_INPUTS_VALUE_EXPRESSION = "preserveInputsVE";
public static final String RESET_INPUTS_VALUE_EXPRESSION = "resetInputsVE";
public static final String CONTEXT_VALUES = "mdContextValues";
public static final String SELECT_DETAIL_REQUEST = "_selectDetailRequest";
public static final String CURRENT_LEVEL = "_currentLevel";
public static final String SELECTED_LEVEL = "_selectedLevel";
public static final String SELECTED_STEP = "_selectedStep";
public static final String PRESERVE_INPUTS = "_preserveInputs";
public static final String RESET_INPUTS = "_resetInputs";
public static final String CURRENT_CONTEXT_VALUE = "_curContextValue";
public static final String RESOLVED_CONTEXT_VALUE = "contextValue_";
public static final String BREADCRUMB_ID_PREFIX = "_bc";
public static final String COMPONENT_TYPE = "org.primefaces.extensions.component.MasterDetail";
public static final String COMPONENT_FAMILY = "org.primefaces.extensions.component";
private static final String DEFAULT_RENDERER = "org.primefaces.extensions.component.MasterDetailRenderer";
private MasterDetailLevel detailLevelToProcess;
private MasterDetailLevel detailLevelToGo;
private int levelPositionToProcess = -1;
private int levelCount = -1;
/**
* Properties that are tracked by state saving.
*
* @author Oleg Varaksin / last modified by $Author$
* @version $Revision$
*/
@SuppressWarnings("java:S115")
protected enum PropertyKeys {
// @formatter:off
level,
contextValue,
selectLevelListener,
showBreadcrumb,
showAllBreadcrumbItems,
showBreadcrumbFirstLevel,
breadcrumbAboveHeader,
style,
styleClass
// @formatter:on
}
public MasterDetail() {
setRendererType(DEFAULT_RENDERER);
}
@Override
public String getFamily() {
return COMPONENT_FAMILY;
}
public int getLevel() {
return (Integer) getStateHelper().eval(PropertyKeys.level, 1);
}
public void setLevel(final int level) {
getStateHelper().put(PropertyKeys.level, level);
}
public Object getContextValue() {
return getStateHelper().eval(PropertyKeys.contextValue, null);
}
public void setContextValue(final Object contextValue) {
getStateHelper().put(PropertyKeys.contextValue, contextValue);
}
public MethodExpression getSelectLevelListener() {
return (MethodExpression) getStateHelper().eval(PropertyKeys.selectLevelListener, null);
}
public void setSelectLevelListener(final MethodExpression selectLevelListener) {
getStateHelper().put(PropertyKeys.selectLevelListener, selectLevelListener);
}
public boolean isShowBreadcrumb() {
return (Boolean) getStateHelper().eval(PropertyKeys.showBreadcrumb, true);
}
public void setShowBreadcrumb(final boolean showBreadcrumb) {
getStateHelper().put(PropertyKeys.showBreadcrumb, showBreadcrumb);
}
public boolean isShowAllBreadcrumbItems() {
return (Boolean) getStateHelper().eval(PropertyKeys.showAllBreadcrumbItems, false);
}
public void setShowBreadcrumbFirstLevel(final boolean showBreadcrumbFirstLevel) {
getStateHelper().put(PropertyKeys.showBreadcrumbFirstLevel, showBreadcrumbFirstLevel);
}
public boolean isShowBreadcrumbFirstLevel() {
return (Boolean) getStateHelper().eval(PropertyKeys.showBreadcrumbFirstLevel, true);
}
public void setShowAllBreadcrumbItems(final boolean showAllBreadcrumbItems) {
getStateHelper().put(PropertyKeys.showAllBreadcrumbItems, showAllBreadcrumbItems);
}
public boolean isBreadcrumbAboveHeader() {
return (Boolean) getStateHelper().eval(PropertyKeys.breadcrumbAboveHeader, true);
}
public void setBreadcrumbAboveHeader(final boolean breadcrumbAboveHeader) {
getStateHelper().put(PropertyKeys.breadcrumbAboveHeader, breadcrumbAboveHeader);
}
public String getStyle() {
return (String) getStateHelper().eval(PropertyKeys.style, null);
}
public void setStyle(final String style) {
getStateHelper().put(PropertyKeys.style, style);
}
public String getStyleClass() {
return (String) getStateHelper().eval(PropertyKeys.styleClass, null);
}
public void setStyleClass(final String styleClass) {
getStateHelper().put(PropertyKeys.styleClass, styleClass);
}
@Override
public void processEvent(final ComponentSystemEvent event) {
super.processEvent(event);
final FacesContext fc = FacesContext.getCurrentInstance();
if (!(event instanceof PostRestoreStateEvent) || !isSelectDetailRequest(fc)) {
return;
}
final PartialViewContext pvc = fc.getPartialViewContext();
if (pvc.getRenderIds().isEmpty()) {
// update the MasterDetail component automatically
pvc.getRenderIds().add(getClientId(fc));
}
final MasterDetailLevel mdl = getDetailLevelToProcess(fc);
final Object contextValue = getContextValueFromFlow(fc, mdl, true);
final String contextVar = mdl.getContextVar();
if (LangUtils.isNotBlank(contextVar) && contextValue != null) {
final Map requestMap = fc.getExternalContext().getRequestMap();
requestMap.put(contextVar, contextValue);
}
}
@Override
public void processDecodes(final FacesContext fc) {
if (!isSelectDetailRequest(fc)) {
super.processDecodes(fc);
}
else {
getDetailLevelToProcess(fc).processDecodes(fc);
}
}
@Override
public void processValidators(final FacesContext fc) {
if (!isSelectDetailRequest(fc)) {
super.processValidators(fc);
}
else {
getDetailLevelToProcess(fc).processValidators(fc);
}
}
@Override
public void processUpdates(final FacesContext fc) {
if (!isSelectDetailRequest(fc)) {
super.processUpdates(fc);
}
else {
getDetailLevelToProcess(fc).processUpdates(fc);
}
}
public MasterDetailLevel getDetailLevelToProcess(final FacesContext fc) {
if (detailLevelToProcess == null) {
initDataForLevels(fc);
}
return detailLevelToProcess;
}
public MasterDetailLevel getDetailLevelToGo(final FacesContext fc) {
if (detailLevelToGo != null) {
return detailLevelToGo;
}
final String strSelectedLevel = fc.getExternalContext().getRequestParameterMap()
.get(getClientId(fc) + SELECTED_LEVEL);
final String strSelectedStep = fc.getExternalContext().getRequestParameterMap()
.get(getClientId(fc) + SELECTED_STEP);
// selected level != null
if (strSelectedLevel != null) {
final int selectedLevel = Integer.parseInt(strSelectedLevel);
detailLevelToGo = getDetailLevelByLevel(selectedLevel);
if (detailLevelToGo != null) {
return detailLevelToGo;
}
throw new FacesException("MasterDetailLevel for selected level = " + selectedLevel + " not found.");
}
final int step;
if (strSelectedStep != null) {
// selected step != null
step = Integer.parseInt(strSelectedStep);
}
else {
// selected level and selected step are null ==> go to the next level
step = 1;
}
detailLevelToGo = getDetailLevelByStep(step);
return detailLevelToGo;
}
public MasterDetailLevel getDetailLevelByLevel(final int level) {
for (final UIComponent child : getChildren()) {
if (child instanceof MasterDetailLevel) {
final MasterDetailLevel mdl = (MasterDetailLevel) child;
if (mdl.getLevel() == level) {
return mdl;
}
}
}
return null;
}
public boolean isSelectDetailRequest(final FacesContext fc) {
return fc.getPartialViewContext().isAjaxRequest()
&& fc.getExternalContext().getRequestParameterMap()
.containsKey(getClientId(fc) + SELECT_DETAIL_REQUEST);
}
public String getPreserveInputs(final FacesContext fc) {
return fc.getExternalContext().getRequestParameterMap().get(getClientId(fc) + PRESERVE_INPUTS);
}
public String getResetInputs(final FacesContext fc) {
return fc.getExternalContext().getRequestParameterMap().get(getClientId(fc) + RESET_INPUTS);
}
public void updateModel(final FacesContext fc, final MasterDetailLevel mdlToGo) {
final int levelToGo = mdlToGo.getLevel();
final ValueExpression levelVE = getValueExpression(PropertyKeys.level.toString());
if (levelVE != null) {
// update "level"
levelVE.setValue(fc.getELContext(), levelToGo);
getStateHelper().remove(PropertyKeys.level);
}
// get component caused this ajax request
final String source = fc.getExternalContext().getRequestParameterMap()
.get(Constants.RequestParams.PARTIAL_SOURCE_PARAM);
final MasterDetailLevel mdl = getDetailLevelToProcess(fc);
// get resolved context value
Object contextValue = null;
final Map contextValues = (Map) mdl.getAttributes().get(CONTEXT_VALUES);
if (contextValues != null) {
contextValue = contextValues.get(RESOLVED_CONTEXT_VALUE + source);
}
if (contextValue != null) {
// update current context value for corresponding MasterDetailLevel
mdlToGo.getAttributes().put(getClientId(fc) + CURRENT_CONTEXT_VALUE, contextValue);
final ValueExpression contextValueVE = getValueExpression(PropertyKeys.contextValue.toString());
if (contextValueVE != null) {
// update "contextValue"
contextValueVE.setValue(fc.getELContext(), contextValue);
getStateHelper().remove(PropertyKeys.contextValue);
}
}
}
public Object getContextValueFromFlow(final FacesContext fc, final MasterDetailLevel mdl,
final boolean includeModel) {
// try to get context value from internal storage
final Object contextValue = mdl.getAttributes().get(getClientId(fc) + MasterDetail.CURRENT_CONTEXT_VALUE);
if (contextValue != null) {
return contextValue;
}
// try to get context value from external storage (e.g. managed bean)
if (includeModel) {
return getContextValue();
}
return null;
}
public BreadCrumb getBreadcrumb() {
BreadCrumb breadCrumb = null;
for (final UIComponent child : getChildren()) {
if (child instanceof BreadCrumb) {
breadCrumb = (BreadCrumb) child;
break;
}
}
final MenuModel model = breadCrumb != null ? breadCrumb.getModel() : null;
if (model != null && model.getElements().isEmpty()) {
final String clientId = getClientId();
final String menuItemIdPrefix = getId() + "_bcItem_";
for (final UIComponent child : getChildren()) {
if (child instanceof MasterDetailLevel) {
final int level = ((MasterDetailLevel) child).getLevel();
// create menu item to detail level
final DefaultMenuItem menuItem = new DefaultMenuItem();
menuItem.setId(menuItemIdPrefix + level);
menuItem.setAjax(true);
menuItem.setImmediate(true);
menuItem.setProcess("@none");
menuItem.setUpdate("@parent");
// add UIParameter
menuItem.setParam(clientId + MasterDetail.SELECT_DETAIL_REQUEST, true);
menuItem.setParam(clientId + MasterDetail.CURRENT_LEVEL, -1);
menuItem.setParam(clientId + MasterDetail.SELECTED_LEVEL, level);
model.getElements().add(menuItem);
}
}
}
return breadCrumb;
}
public void resetCalculatedValues() {
detailLevelToProcess = null;
detailLevelToGo = null;
levelPositionToProcess = -1;
levelCount = -1;
}
private void initDataForLevels(final FacesContext fc) {
final String strCurrentLevel = fc.getExternalContext().getRequestParameterMap()
.get(getClientId(fc) + CURRENT_LEVEL);
if (strCurrentLevel == null) {
throw new FacesException("Current level is missing in request.");
}
final int currentLevel = Integer.parseInt(strCurrentLevel);
int count = 0;
for (final UIComponent child : getChildren()) {
if (child instanceof MasterDetailLevel) {
final MasterDetailLevel mdl = (MasterDetailLevel) child;
count++;
if (detailLevelToProcess == null && mdl.getLevel() == currentLevel) {
detailLevelToProcess = mdl;
levelPositionToProcess = count;
}
}
}
levelCount = count;
if (detailLevelToProcess == null) {
throw new FacesException("Current MasterDetailLevel to process not found.");
}
}
private MasterDetailLevel getDetailLevelByStep(final int step) {
int levelPositionToGo = getLevelPositionToProcess() + step;
if (levelPositionToGo < 1) {
levelPositionToGo = 1;
}
else if (levelPositionToGo > getLevelCount()) {
levelPositionToGo = getLevelCount();
}
int pos = 0;
for (final UIComponent child : getChildren()) {
if (child instanceof MasterDetailLevel) {
final MasterDetailLevel mdl = (MasterDetailLevel) child;
pos++;
if (pos == levelPositionToGo) {
return mdl;
}
}
}
// should not happen
return null;
}
private int getLevelPositionToProcess() {
if (levelPositionToProcess == -1) {
initDataForLevels(FacesContext.getCurrentInstance());
}
return levelPositionToProcess;
}
private int getLevelCount() {
if (levelCount == -1) {
initDataForLevels(FacesContext.getCurrentInstance());
}
return levelCount;
}
@Override
public Object saveState(final FacesContext context) {
// reset component for MyFaces view pooling
detailLevelToGo = null;
detailLevelToProcess = null;
levelCount = -1;
levelPositionToProcess = -1;
return super.saveState(context);
}
}
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