Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.acacia.client.widgets; import org.opencms.gwt.client.ui.input.CmsCheckBox; import org.opencms.gwt.client.ui.input.CmsMultiCheckBox; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import com.google.gwt.dom.client.Element; import com.google.gwt.event.dom.client.FocusEvent; import com.google.gwt.event.dom.client.FocusHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.user.client.ui.Composite; /** * Provides a standard HTML form checkbox widget, for use on a widget dialog.<p> * * * @since 8.5.0 * * */ public class CmsMultiCheckboxWidget extends Composite implements I_CmsEditWidget { /** Value of the activation. */ private boolean m_active = true; /** The multi check box panel. */ private CmsMultiCheckBox m_multicheckbox; /** The selected checkboxes. */ private String m_selected; /** * Constructs an OptionalTextBox with the given caption on the check.<p> * * @param config configuration string * */ public CmsMultiCheckboxWidget(String config) { m_multicheckbox = new CmsMultiCheckBox(parseconfig(config)); setValue(m_selected); // All composites must call initWidget() in their constructors. initWidget(m_multicheckbox); //panel.add(m_multicheckbox); List<CmsCheckBox> checkboxes = m_multicheckbox.getCheckboxes(); Iterator<CmsCheckBox> it = checkboxes.iterator(); while (it.hasNext()) { it.next().addValueChangeHandler(new ValueChangeHandler<Boolean>() { public void onValueChange(ValueChangeEvent<Boolean> arg0) { fireChangeEvent(); } }); } } /** * @see com.google.gwt.event.dom.client.HasFocusHandlers#addFocusHandler(com.google.gwt.event.dom.client.FocusHandler) */ public HandlerRegistration addFocusHandler(FocusHandler handler) { return addDomHandler(handler, FocusEvent.getType()); } /** * @see com.google.gwt.event.logical.shared.HasValueChangeHandlers#addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler) */ public HandlerRegistration addValueChangeHandler(ValueChangeHandler<String> handler) { return addHandler(handler, ValueChangeEvent.getType()); } /** * Represents a value change event.<p> */ public void fireChangeEvent() { ValueChangeEvent.fire(this, m_multicheckbox.getFormValueAsString()); } /** /** * @see com.google.gwt.user.client.ui.HasValue#getValue() */ public String getValue() { return m_multicheckbox.getFormValueAsString(); } /** * @see org.opencms.acacia.client.widgets.I_CmsEditWidget#isActive() */ public boolean isActive() { return m_active; } /** * @see org.opencms.acacia.client.widgets.I_CmsEditWidget#onAttachWidget() */ public void onAttachWidget() { super.onAttach(); } /** * @see org.opencms.acacia.client.widgets.I_CmsEditWidget#owns(com.google.gwt.dom.client.Element) */ public boolean owns(Element element) { // TODO implement this in case we want the delete behavior for optional fields return false; } /** * @see org.opencms.acacia.client.widgets.I_CmsEditWidget#setActive(boolean) */ public void setActive(boolean active) { if (active == m_active) { return; } m_active = active; m_multicheckbox.setEnabled(active); if (active) { fireChangeEvent(); } } /** * @see org.opencms.acacia.client.widgets.I_CmsEditWidget#setName(java.lang.String) */ public void setName(String name) { // no input field so nothing to do } /** * @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object) */ public void setValue(String value) { setValue(value, false); } /** * @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object, boolean) */ public void setValue(String value, boolean fireEvents) { m_selected = value; m_multicheckbox.setFormValueAsString(value); if (fireEvents) { fireChangeEvent(); } } /** * Helper class for parsing the configuration in to a list of Radiobuttons. <p> * * @param config the configuration string * @return Map of option and value of the checkbox * */ private Map<String, String> parseconfig(String config) { Map<String, String> result = new HashMap<String, String>(); m_selected = ""; String[] labels = config.split("\\|"); for (int i = 0; i < labels.length; i++) { if (labels[i].indexOf("*") >= 0) { labels[i] = labels[i].replace("*", ""); m_selected += labels[i] + "|"; } result.put(labels[i], labels[i]); } m_selected = m_selected.substring(0, m_selected.lastIndexOf("|")); return result; } }