/*
* 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.util.TextMetrics;
import com.extjs.gxt.ui.client.widget.ContentPanel;
import com.extjs.gxt.ui.client.widget.Layout;
import com.extjs.gxt.ui.client.widget.layout.TableLayout;
import com.extjs.gxt.ui.client.widget.toolbar.ToolBar;
import com.google.gwt.user.client.Element;
/**
* A specialized content panel for showing groups of buttons, typically used
* with ToolBar.
*
* @see ToolBar
*/
public class ButtonGroup extends ContentPanel {
/**
* Creates a new button group.
*
* @param columns the number of columns
*/
public ButtonGroup(int columns) {
super();
baseStyle = "x-btn-group";
frame = true;
setLayout(new TableLayout(columns));
}
@Override
protected void onLayoutExcecuted(Layout layout) {
super.onLayoutExcecuted(layout);
int bodyWidth = body.getFrameWidth("lr") + body.firstChild().getWidth();
if (bodyWidth > 0) { // display none
TextMetrics.get().bind(head.el().selectNode("span"));
int frameWidth = getFrameWidth();
int tw = TextMetrics.get().getWidth(getHeading()) + frameWidth;
if (tw > bodyWidth) {
bodyWidth = tw;
}
body.setWidth(bodyWidth, true);
el().setWidth(bodyWidth + frameWidth, true);
}
}
@Override
protected void onRender(Element parent, int pos) {
super.onRender(parent, pos);
if (getHeading() == null || (getHeading() != null && getHeading().equals(" "))) {
addStyleName("x-btn-group-notitle");
}
}
}