/*
* Copyright 2015 JBoss, by Red Hat, Inc
*
* 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.uberfire.client.docks.view.menu;
import java.util.ArrayList;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Widget;
import org.gwtbootstrap3.client.ui.Button;
import org.gwtbootstrap3.client.ui.ButtonGroup;
import org.gwtbootstrap3.client.ui.DropDownMenu;
import org.gwtbootstrap3.client.ui.NavbarLink;
import org.gwtbootstrap3.client.ui.constants.ButtonSize;
import org.gwtbootstrap3.client.ui.constants.Toggle;
import org.jboss.errai.security.shared.api.identity.User;
import org.uberfire.security.authz.AuthorizationManager;
import org.uberfire.workbench.model.menu.EnabledStateChangeListener;
import org.uberfire.workbench.model.menu.MenuCustom;
import org.uberfire.workbench.model.menu.MenuGroup;
import org.uberfire.workbench.model.menu.MenuItem;
import org.uberfire.workbench.model.menu.MenuItemCommand;
@ApplicationScoped
public class MenuBuilder {
@Inject
private AuthorizationManager authzManager;
@Inject
private User identity;
public Widget makeItem(final MenuItem item,
boolean isRoot) {
if (!authzManager.authorize(item,
identity)) {
return null;
}
if (item instanceof MenuItemCommand) {
final MenuItemCommand cmdItem = (MenuItemCommand) item;
if (isRoot) {
final Button button = new Button(cmdItem.getCaption());
button.setSize(ButtonSize.SMALL);
button.setEnabled(item.isEnabled());
button.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
cmdItem.getCommand().execute();
}
});
item.addEnabledStateChangeListener(new EnabledStateChangeListener() {
@Override
public void enabledStateChanged(final boolean enabled) {
button.setEnabled(enabled);
}
});
return button;
} else {
final NavbarLink navbarLink = new NavbarLink();
navbarLink.setText(cmdItem.getCaption());
if (!item.isEnabled()) {
navbarLink.addStyleName("disabled");
}
navbarLink.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
cmdItem.getCommand().execute();
}
});
item.addEnabledStateChangeListener(new EnabledStateChangeListener() {
@Override
public void enabledStateChanged(final boolean enabled) {
if (enabled) {
navbarLink.removeStyleName("disabled");
} else {
navbarLink.addStyleName("disabled");
}
}
});
return navbarLink;
}
} else if (item instanceof MenuGroup) {
final MenuGroup groups = (MenuGroup) item;
if (isRoot) {
final List<Widget> widgetList = new ArrayList<Widget>();
for (final MenuItem _item : groups.getItems()) {
final Widget widget = makeItem(_item,
false);
if (widget != null) {
widgetList.add(widget);
}
}
if (widgetList.isEmpty()) {
return null;
}
return makeDropDownMenuButton(groups.getCaption(),
widgetList);
} else {
final List<Widget> widgetList = new ArrayList<Widget>();
for (final MenuItem _item : groups.getItems()) {
final Widget result = makeItem(_item,
false);
if (result != null) {
widgetList.add(result);
}
}
if (widgetList.isEmpty()) {
return null;
}
return makeDropDownMenuButton(groups.getCaption(),
widgetList);
}
} else if (item instanceof MenuCustom) {
final Object result = ((MenuCustom) item).build();
if (result instanceof Widget) {
return (Widget) result;
}
}
return null;
}
private Widget makeDropDownMenuButton(final String caption,
final List<Widget> widgetList) {
final ButtonGroup buttonGroup = new ButtonGroup();
final Button dropdownButton = new Button(caption);
dropdownButton.setDataToggle(Toggle.DROPDOWN);
dropdownButton.setSize(ButtonSize.SMALL);
final DropDownMenu dropDownMenu = new DropDownMenu();
for (final Widget _item : widgetList) {
dropDownMenu.add(_item);
}
buttonGroup.add(dropdownButton);
buttonGroup.add(dropDownMenu);
return buttonGroup;
}
}