/*
* Ext GWT 2.2.4 - Ext for GWT
* Copyright(c) 2007-2010, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget.button;
import com.extjs.gxt.ui.client.GXT;
import com.extjs.gxt.ui.client.Style.ButtonArrowAlign;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.ComponentEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.SelectionListener;
/**
* A split button that provides a built-in dropdown arrow that can fire an event
* separately from the default click event of the button.
*
* <dl>
* <dt><b>Events:</b></dt>
*
* <dd><b>ArrowClick</b> : ButtonEvent(button, item, event)<br>
* <div>Fires when this button's arrow is clicked.</div>
* <ul>
* <li>button : this</li>
* <li>item : the menu</li>
* <li>event : the dom event</li>
* </ul>
* </dd>
*
* </dl>
*/
public class SplitButton extends Button {
protected String arrowSelector = "em";
/**
* Creates a new split button.
*/
public SplitButton() {
super();
}
/**
* Creates a new split button.
*
* @param text the button's text
*/
public SplitButton(String text) {
super(text);
}
/**
* Creates a new split button.
*
* @param text the button's text
* @param listener the selection listener
*/
public SplitButton(String text, SelectionListener<ButtonEvent> listener) {
super(text, listener);
}
protected String getMenuClass() {
if (menu != null) {
if (getArrowAlign() == ButtonArrowAlign.BOTTOM) {
return baseStyle + "-split-bottom";
} else {
return baseStyle + "-split";
}
} else {
return "";
}
}
protected boolean isClickOnArrow(ComponentEvent ce) {
return (getArrowAlign() == ButtonArrowAlign.BOTTOM) ? ce.getClientY() > buttonEl.getRegion().bottom
: ce.getClientX() > buttonEl.getRegion().right;
}
@Override
protected void onClick(ComponentEvent ce) {
ce.preventDefault();
focus();
hideToolTip();
if (!disabled) {
ButtonEvent be = new ButtonEvent(this);
be.setEvent(ce.getEvent());
if (isClickOnArrow(ce)) {
if (menu != null && !menu.isVisible()) {
showMenu();
}
be.setMenu(menu);
fireEvent(Events.ArrowClick, be);
} else {
fireEvent(Events.Select, be);
}
}
}
@Override
protected void onDisable() {
if (rendered) {
if (!GXT.isIE6) {
el().addStyleName(disabledStyle);
}
buttonEl.disable();
el().child(arrowSelector).disable();
}
disabled = true;
}
@Override
protected void onEnable() {
if (rendered) {
if (!GXT.isIE6) {
el().removeStyleName(disabledStyle);
}
buttonEl.enable();
el().child(arrowSelector).enable();
}
disabled = true;
}
protected boolean isMenuTriggerOver(ComponentEvent ce) {
return menu != null && ce.getTarget().getTagName().equalsIgnoreCase("EM");
}
protected boolean isMenuTriggerOut(ComponentEvent ce) {
return menu != null && !ce.getTarget().getTagName().equalsIgnoreCase("EM");
}
}