/*
* Copyright (c) 2010-2016 Evolveum
*
* 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 com.evolveum.midpoint.web.component.form.multivalue;
import com.evolveum.midpoint.gui.api.component.BasePanel;
import com.evolveum.midpoint.web.component.util.VisibleEnableBehaviour;
import org.apache.commons.lang.StringUtils;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.behavior.AttributeAppender;
import org.apache.wicket.feedback.ComponentFeedbackMessageFilter;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import java.io.Serializable;
import java.util.Iterator;
import java.util.List;
/**
* todo not finished [lazyman]
*
* @author lazyman
*/
public class MultiValueTextFormGroup<T extends Serializable> extends BasePanel<List<T>> {
private static final String ID_TEXT = "text";
private static final String ID_TEXT_WRAPPER = "textWrapper";
private static final String ID_LABEL = "label";
private static final String ID_FEEDBACK = "feedback";
private static final String ID_REPEATER = "repeater";
private static final String ID_ADD = "add";
private static final String ID_REMOVE = "remove";
private static final String ID_BUTTON_GROUP = "buttonGroup";
private static final String CLASS_MULTI_VALUE = "multivalue-form";
public MultiValueTextFormGroup(String id, IModel<List<T>> value, IModel<String> label, String labelSize,
String textSize, boolean required) {
super(id, value);
setOutputMarkupId(true);
initLayout(label, labelSize, textSize, required);
}
private void initLayout(final IModel<String> label, final String labelSize, final String textSize,
final boolean required) {
Label l = new Label(ID_LABEL, label);
if (StringUtils.isNotEmpty(labelSize)) {
l.add(AttributeAppender.prepend("class", labelSize));
}
add(l);
ListView repeater = new ListView<T>(ID_REPEATER, getModel()) {
@Override
protected void populateItem(final ListItem<T> item) {
WebMarkupContainer textWrapper = new WebMarkupContainer(ID_TEXT_WRAPPER);
textWrapper.add(AttributeAppender.prepend("class", new AbstractReadOnlyModel<String>() {
@Override
public String getObject() {
StringBuilder sb = new StringBuilder();
if (StringUtils.isNotEmpty(textSize)) {
sb.append(textSize).append(' ');
}
if (item.getIndex() > 0 && StringUtils.isNotEmpty(getOffsetClass())) {
sb.append(getOffsetClass()).append(' ');
sb.append(CLASS_MULTI_VALUE);
}
return sb.toString();
}
}));
item.add(textWrapper);
TextField text = new TextField(ID_TEXT, createTextModel(item.getModel()));
text.add(new AjaxFormComponentUpdatingBehavior("blur") {
@Override
protected void onUpdate(AjaxRequestTarget target) {
}
});
text.setRequired(required);
text.add(AttributeAppender.replace("placeholder", label));
text.setLabel(label);
textWrapper.add(text);
FeedbackPanel feedback = new FeedbackPanel(ID_FEEDBACK, new ComponentFeedbackMessageFilter(text));
textWrapper.add(feedback);
WebMarkupContainer buttonGroup = new WebMarkupContainer(ID_BUTTON_GROUP);
buttonGroup.add(AttributeAppender.append("class", new AbstractReadOnlyModel<String>() {
@Override
public String getObject() {
if (item.getIndex() > 0 && StringUtils.isNotEmpty(labelSize)) {
return CLASS_MULTI_VALUE;
}
return null;
}
}));
item.add(buttonGroup);
initButtons(buttonGroup, item);
}
};
add(repeater);
}
/**
* @return css class for offseting other values (not first, left to the first there is a label)
*/
protected String getOffsetClass() {
return "col-md-offset-4";
}
protected IModel<String> createTextModel(final IModel<T> model) {
return new IModel<String>() {
@Override
public String getObject() {
T obj = model.getObject();
return obj != null ? obj.toString() : null;
}
@Override
public void setObject(String object) {
model.setObject((T) object);
}
@Override
public void detach() {
}
};
}
private void initButtons(WebMarkupContainer buttonGroup, final ListItem<T> item) {
AjaxLink add = new AjaxLink(ID_ADD) {
@Override
public void onClick(AjaxRequestTarget target) {
addValuePerformed(target, item);
}
};
add.add(new VisibleEnableBehaviour() {
@Override
public boolean isVisible() {
return isAddButtonVisible(item);
}
});
buttonGroup.add(add);
AjaxLink remove = new AjaxLink(ID_REMOVE) {
@Override
public void onClick(AjaxRequestTarget target) {
removeValuePerformed(target, item);
}
};
remove.add(new VisibleEnableBehaviour() {
@Override
public boolean isVisible() {
return isRemoveButtonVisible(item);
}
});
buttonGroup.add(remove);
}
protected boolean isAddButtonVisible(ListItem<T> item) {
int size = getModelObject().size();
if (size <= 1) {
return true;
}
if (item.getIndex() == size - 1) {
return true;
}
return false;
}
protected boolean isRemoveButtonVisible(ListItem<T> item) {
int size = getModelObject().size();
if (size > 1) {
return true;
}
return false;
}
protected void addValuePerformed(AjaxRequestTarget target, ListItem<T> item) {
List<T> objects = getModelObject();
objects.add(createNewEmptyItem());
target.add(this);
}
protected T createNewEmptyItem() {
return null;
}
protected void removeValuePerformed(AjaxRequestTarget target, ListItem<T> item) {
List<T> objects = getModelObject();
Iterator<T> iterator = objects.iterator();
while (iterator.hasNext()) {
T object = iterator.next();
if (object.equals(item.getModelObject())) {
iterator.remove();
break;
}
}
target.add(this);
}
}