/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.forum.common.webui;
import java.io.Writer;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIComponent;
import org.exoplatform.webui.core.UIPortletApplication;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.Event.Phase;
import org.exoplatform.webui.event.EventListener;
import org.exoplatform.webui.form.UIForm;
import org.exoplatform.webui.form.UIFormInput;
import org.exoplatform.webui.form.UIFormInputBase;
import org.exoplatform.webui.form.UIFormInputContainer;
import org.exoplatform.webui.form.validator.Validator;
@ComponentConfig(
events = {
@EventConfig(listeners = UIFormMultiValueInputSet.AddActionListener.class, phase = Phase.DECODE),
@EventConfig(listeners = UIFormMultiValueInputSet.RemoveActionListener.class, phase = Phase.DECODE)
}
)
@SuppressWarnings("unchecked")
public class UIFormMultiValueInputSet extends UIFormInputContainer<List> {
protected Log log = ExoLogger.getLogger(this.getClass());
/**
* A list of validators
*/
protected List<Validator> validators_;
/**
* The type of items in the selector
*/
private Class<? extends UIFormInput> clazz_;
private Constructor constructor_ = null;
private List<Integer> listIndexItemRemoved = new ArrayList<Integer>();
private int maxOld = 0;
/**
* Whether this field is enabled
*/
protected boolean enable_ = true;
/**
* Whether this field is in read only mode
*/
protected boolean readonly_ = false;
public UIFormMultiValueInputSet() throws Exception {
super(null, null);
}
public UIFormMultiValueInputSet(String name, String bindingField) throws Exception {
super(name, bindingField);
setComponentConfig(getClass(), null);
}
public Class<List> getTypeValue() {
return List.class;
}
public <E extends Validator> UIFormInput addValidator(Class<E> clazz, Object... params) throws Exception {
if (validators_ == null)
validators_ = new ArrayList<Validator>(3);
if (params.length > 0) {
Class<?>[] classes = new Class[params.length];
for (int i = 0; i < params.length; i++) {
classes[i] = params[i].getClass();
}
Constructor<E> constructor = clazz.getConstructor(classes);
validators_.add(constructor.newInstance(params));
return this;
}
validators_.add(clazz.newInstance());
return this;
}
public void setType(Class<? extends UIFormInput> clazz) {
this.clazz_ = clazz;
Constructor[] constructors = clazz_.getConstructors();
if (constructors.length > 0) {
constructor_ = constructors[0];
if (constructor_.getParameterTypes().length == 0)
constructor_ = constructors[constructors.length - 1];
}
}
public Class<? extends UIFormInput> getUIFormInputBase() {
return clazz_;
}
/**
* @return the selected items in the selector
*/
public List<?> getValue() {
List<Object> values = new ArrayList<Object>();
for (UIComponent child : getChildren()) {
UIFormInputBase uiInput = (UIFormInputBase) child;
if (uiInput.getValue() == null)
continue;
values.add(uiInput.getValue());
}
return values;
}
public UIFormInput setValue(List<?> values) throws Exception {
getChildren().clear();
for (int i = 0; i < values.size(); i++) {
UIFormInputBase uiInput = createUIFormInput(i);
uiInput.setValue(values.get(i));
}
return this;
}
public boolean isEnable() {
return enable_;
}
public UIFormMultiValueInputSet setEnable(boolean enable) {
enable_ = enable;
return this;
}
public boolean isEditable() {
return !readonly_;
}
public UIFormMultiValueInputSet setEditable(boolean editable) {
readonly_ = !editable;
return this;
}
public void processDecode(WebuiRequestContext context) throws Exception {
super.processDecode(context);
UIForm uiForm = getAncestorOfType(UIForm.class);
String action = uiForm.getSubmitAction();
Event<UIComponent> event = createEvent(action, Event.Phase.DECODE, context);
if (event == null)
return;
event.broadcast();
}
private String getResourceBundle(WebuiRequestContext context, String key, String dfValue) throws Exception {
ResourceBundle res = context.getApplicationResourceBundle();
UIPortletApplication app = getAncestorOfType(UIPortletApplication.class);
try {
dfValue = res.getString(app.getId() + key);
} catch (Exception e) {
log.warn("Can not find resource bundle for key : " + app.getId() + key);
}
return dfValue;
}
public void processRender(WebuiRequestContext context) throws Exception {
if (getChildren() == null || getChildren().size() < 1)
createUIFormInput(0);
Writer writer = context.getWriter();
UIForm uiForm = getAncestorOfType(UIForm.class);
int size = getChildren().size();
String rmItem = getResourceBundle(context, ".label.RemoveItem", "Remove Item");
String addItem = getResourceBundle(context, ".label.AddItem", "Add Item");
String lbItem = uiForm.getLabel(getId());
writer.append("<div class=\"UIFormMultiValueInputSet\" id=\"").append(getId()).append("\">");
for (int i = 0; i < size; i++) {
UIFormInputBase uiInput = getChild(i);
writer.append("<div class=\"multiValueContainer\">");
uiInput.setReadOnly(readonly_);
uiInput.setDisabled(!enable_);
uiInput.setHTMLAttribute("title", lbItem + " " + (i+1));
renderChild(uiInput.getId());
if ((size >= 2) || ((size == 1) && (uiInput.getValue() != null))) {
writer.append("<a class='actionIcon' onclick=\"").append(uiForm.event("Remove", uiInput.getId())).append("\"")
.append(" title='").append(rmItem).append("' alt='").append(rmItem).append("'")
.append(" rel='tooltip' data-placement='bottom'>");
writer.append("<i class='uiIconDelete uiIconLightGray'></i></a>");
}
if (i == size - 1) {
writer.append("<a class='actionIcon' onclick=\"").append(uiForm.event("Add", getId())).append("\"")
.append(" title='").append(addItem).append("' alt='").append(addItem).append("'")
.append(" rel='tooltip' data-placement='bottom'>");
writer.append("<i class='uiIconAddIcon uiIconLightGray'></i></a>");
}
writer.append("</div>");
}
writer.append("</div>");
}
public UIFormInputBase createUIFormInput(int idx) throws Exception {
Class[] classes = constructor_.getParameterTypes();
Object[] params = new Object[classes.length];
for (int i = 0; i < classes.length; i++) {
if (classes[i].isPrimitive()) {
if (classes[i] == boolean.class)
params[i] = false;
else
params[i] = 0;
}
}
params[0] = getId() + String.valueOf(idx);
UIFormInputBase inputBase = (UIFormInputBase) constructor_.newInstance(params);
if (validators_ != null) {
for (Validator validator : validators_) {
inputBase.addValidator(validator.getClass());
}
}
addChild(inputBase);
return inputBase;
}
public void resetListIndexItemRemoved() {
this.listIndexItemRemoved = new ArrayList<Integer>();
}
public List<Integer> getListIndexItemRemoved() {
return listIndexItemRemoved;
}
public void setMaxOld(int maxOld) {
this.maxOld = maxOld;
}
public int getMaxOld() {
return maxOld;
}
static public class AddActionListener extends EventListener<UIFormMultiValueInputSet> {
public void execute(Event<UIFormMultiValueInputSet> event) throws Exception {
UIFormMultiValueInputSet uiSet = event.getSource();
String id = event.getRequestContext().getRequestParameter(OBJECTID);
if (uiSet.getId().equals(id)) {
List<UIComponent> children = uiSet.getChildren();
if (children.size() > 0) {
UIFormInputBase uiInput = (UIFormInputBase) children.get(children.size() - 1);
String index = uiInput.getId();
int maxIndex = Integer.parseInt(index.replaceAll(id, ""));
if (maxIndex < uiSet.maxOld) {
maxIndex = uiSet.maxOld;
while (uiSet.getChildById(id + String.valueOf(maxIndex)) != null) {
maxIndex = maxIndex + 1;
}
}
uiSet.createUIFormInput(maxIndex + 1);
}
}
event.getRequestContext().addUIComponentToUpdateByAjax(uiSet.getParent());
}
}
static public class RemoveActionListener extends EventListener<UIFormMultiValueInputSet> {
public void execute(Event<UIFormMultiValueInputSet> event) throws Exception {
UIFormMultiValueInputSet uiSet = event.getSource();
String id = event.getRequestContext().getRequestParameter(OBJECTID);
uiSet.removeChildById(id);
uiSet.listIndexItemRemoved.add(Integer.parseInt(id.replaceAll(uiSet.getId(), "")));
event.getRequestContext().addUIComponentToUpdateByAjax(uiSet.getParent());
}
}
}