com.extjs.gxt.ui.client.widget.button.ButtonGroup Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gxt Show documentation

Rich Internet Application Framework for GWT

There is a newer version: 2.3.1-gwt22

/*
 * Sencha GXT 2.3.1a - Sencha for GWT
 * Copyright(c) 2007-2013, Sencha, Inc.
 * [email protected]
 * 
 * http://www.sencha.com/products/gxt/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(getHeadingHtml()) + 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 (getHeadingHtml() == null || (getHeadingHtml() != null && getHeadingHtml().equals(" "))) {
      addStyleName("x-btn-group-notitle");
    }
  }
}