/*
* Copyright 2014 Red Hat, Inc. and/or its affiliates.
*
* 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.dashbuilder.renderer.client.selector;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.OptionElement;
import com.google.gwt.dom.client.SelectElement;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import org.dashbuilder.displayer.client.AbstractDisplayerView;
import org.dashbuilder.renderer.client.resources.i18n.SelectorConstants;
import org.gwtbootstrap3.client.ui.ListBox;
public class SelectorDisplayerView extends AbstractDisplayerView<SelectorDisplayer> implements SelectorDisplayer.View {
protected ListBox listBox = new ListBox();
protected boolean hintEnabled = false;
@Override
public void init(SelectorDisplayer presenter) {
super.setPresenter(presenter);
super.setVisualization(listBox);
}
@Override
public void showSelectHint(String column) {
showHint("- " + SelectorConstants.INSTANCE.selectorDisplayer_select() + " " + column + " -");
}
@Override
public void showResetHint(String column) {
showHint("- " + SelectorConstants.INSTANCE.selectorDisplayer_reset() + " " + column + " -");
}
protected void showHint(String hint) {
if (hintEnabled) {
SelectElement selectElement = SelectElement.as(listBox.getElement());
NodeList<OptionElement> options = selectElement.getOptions();
options.getItem(0).setText(hint);
} else {
listBox.addItem(hint);
hintEnabled = true;
}
}
@Override
public void clearItems() {
listBox.clear();
hintEnabled = false;
}
@Override
public void addItem(String id, String value, boolean selected) {
listBox.addItem(value, id);
if (selected) {
listBox.setSelectedIndex(listBox.getItemCount()-1);
}
}
@Override
public String getSelectedId() {
if (hintEnabled && listBox.getSelectedIndex() == 0) {
return null;
}
return listBox.getSelectedValue();
}
@Override
public int getItemCount() {
return listBox.getItemCount() - (hintEnabled ? 1 : 0);
}
@Override
public void setItemTitle(int index, String title) {
SelectElement selectElement = SelectElement.as(listBox.getElement());
NodeList<OptionElement> options = selectElement.getOptions();
OptionElement optionElement = options.getItem(index + (hintEnabled ? 1: 0));
if (optionElement != null) {
optionElement.setTitle(title);
}
}
@Override
public void setFilterEnabled(boolean enabled) {
if (enabled) {
listBox.addChangeHandler(new ChangeHandler() {
public void onChange(ChangeEvent event) {
getPresenter().onItemSelected();
}
});
}
}
@Override
public String getGroupsTitle() {
return SelectorConstants.INSTANCE.selectorDisplayer_groupsTitle();
}
@Override
public String getColumnsTitle() {
return SelectorConstants.INSTANCE.selectorDisplayer_columnsTitle();
}
}