de.swm.commons.mobile.client.widgets.ListItem Maven / Gradle / Ivy
/*
* Copyright 2011 SWM Services GmbH.
*
* 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 de.swm.commons.mobile.client.widgets;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Widget;
import de.swm.commons.mobile.client.SWMMobile;
import de.swm.gwt.client.utils.ShimClickHandler;
/**
* Defines a list item which can be placed inside a {@link ListPanel} A list item can have a left navigation arrow.
*/
public class ListItem extends FlowPanel {
private final ShimClickHandler shimClickHandler = new ShimClickHandler();
private ListPanel.Chevron arrow;
/**
* Arrow visibility.
*/
public enum ShowArrow {
/**
* Arrow visibility. *
*/
Default,
/**
* Arrow visibility. *
*/
True,
/**
* Arrow visibility. *
*/
False
}
protected ShowArrow myShowArrow = ShowArrow.Default;
protected boolean myDisabled = false;
/**
* Default constructor.
*/
public ListItem() {
super();
this.addDomHandler(shimClickHandler, ClickEvent.getType());
}
/**
* Adds a click Handler to the list item.
*
* @param handlerToAdd the click handler to add.
* @return the click handler
*/
public HandlerRegistration addClickHanlder(ClickHandler handlerToAdd) {
return shimClickHandler.addClickHandler(handlerToAdd);
}
/**
* Shows/hides the right arrow icon
*
* @param show .
*/
public void setShowArrow(boolean show) {
myShowArrow = show ? ShowArrow.True : ShowArrow.False;
int last = getWidgetCount() - 1;
if (last >= 0) {
Widget widget = getWidget(last);
if (widget != null && widget instanceof ListPanel.Chevron) {
if (!show) {
remove(last);
arrow = null;
}
} else {
if (show) {
arrow = new ListPanel.Chevron();
add(arrow);
}
}
}
}
/**
* Disabled/enables the widget.
*
* @param disabled true if disabled.
*/
public void setDisabled(boolean disabled) {
myDisabled = disabled;
shimClickHandler.setEnabled(!disabled);
if (myDisabled) {
addStyleName(SWMMobile.getTheme().getMGWTCssBundle().getListPanelCss().disabled());
} else {
removeStyleName(SWMMobile.getTheme().getMGWTCssBundle().getListPanelCss().disabled());
}
}
public boolean getDisabled() {
return myDisabled;
}
/**
* Returns the arrow widget.
*
* @return arrow widget
*/
protected Widget getArrow() {
return arrow;
}
/**
* Defines the global arrow options
*
* @param show the global arraow visibility options
*/
void setShowArrowFromParent(boolean show) {
// Parent can only override if it has not been set.
if (myShowArrow == ShowArrow.Default) {
setShowArrow(show);
}
}
}