/* File: FormButton.java * Copyright (C) 2002-2003 The University of Iowa * Created by: Jeremy Faden * Jessica Swanner * Edward E. West * * This file is part of the das2 library. * * das2 is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.das2.dasml; import org.das2.NameContext; import org.das2.DasApplication; import org.das2.DasException; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import javax.swing.*; import org.das2.DasPropertyException; import org.das2.components.propertyeditor.Editable; /** * This class is provided to override the Java Beans properties of * the JButton class. * * @author Edward West */ public class FormButton extends JButton implements Editable, FormComponent { CommandAction commandAction; CommandBlock commandBlock; private boolean editable; private String dasName; protected org.das2.util.DnDSupport dndSupport; public FormButton(String name, String label) { super(label); if (name == null) { name = "button_" + Integer.toHexString(System.identityHashCode(this)); } try { setDasName(name); } catch (org.das2.DasNameException dne) { org.das2.util.DasExceptionHandler.handle(dne); } } /** Creates a new instance of FormButton */ FormButton(Element element, FormBase form) throws org.das2.DasPropertyException, ParsedExpressionException { String name = element.getAttribute("name"); String label = element.getAttribute("label"); boolean enabled = element.getAttribute("enabled").equals("true"); setText(label); setEnabled(enabled); if (!name.equals("")) { try { setDasName(name); } catch (org.das2.DasNameException dne) { org.das2.util.DasExceptionHandler.handle(dne); } } NodeList children = element.getChildNodes(); int childCount = children.getLength(); for (int index = 0; index < childCount; index++) { Node node = children.item(index); if (node instanceof Element && node.getNodeName().equals("action")) { Element actionElement = (Element)node; commandBlock = new CommandBlock(actionElement, form); commandAction = new CommandAction(commandBlock); addActionListener(commandAction); } } } public CommandBlock getFormAction() { return commandBlock; } public void setFormAction(CommandBlock cb) { if (cb == commandBlock) { return; } if (commandBlock != null) { removeActionListener(commandAction); } if (cb == null) { commandAction = null; commandBlock = null; } else { commandBlock = cb; commandAction = new CommandAction(commandBlock); addActionListener(commandAction); } } public Element getDOMElement(Document document) { Element element = document.createElement("button"); element.setAttribute("name", getDasName()); element.setAttribute("label", getText()); element.setAttribute("enabled", String.valueOf(isEnabled())); if (commandBlock != null) { Element actionElement = document.createElement("action"); commandBlock.appendDOMElements(actionElement); element.appendChild(actionElement); } return element; } public String getDasName() { return dasName; } public void setDasName(String name) throws org.das2.DasNameException { if (name.equals(dasName)) { return; } String oldName = dasName; dasName = name; DasApplication app = getDasApplication(); if (app != null) { app.getNameContext().put(name, this); if (oldName != null) { app.getNameContext().remove(oldName); } } this.firePropertyChange("name", oldName, name); } public FormBase getForm() { FormComponent parent = (FormComponent)getParent(); if (parent == null) { return null; } return parent.getForm(); } public boolean getEditingMode() { return editable; } public void setEditingMode(boolean b) { editable = b; } public org.das2.util.DnDSupport getDnDSupport() { if (dndSupport == null) { dndSupport = new DefaultComponentDnDSupport(this); } return dndSupport; } public boolean startDrag(int x, int y, int action, java.awt.event.MouseEvent evt) { return false; } public void deregisterComponent() { DasApplication app = getDasApplication(); if (app != null) { NameContext nc = app.getNameContext(); try { if (nc.get(getDasName()) == this) { nc.remove(getDasName()); } } catch (DasPropertyException dpe) { //This exception would only occur due to some invalid state. //So, wrap it and toss it. IllegalStateException se = new IllegalStateException(dpe.toString()); se.initCause(dpe); throw se; } catch (java.lang.reflect.InvocationTargetException ite) { //This exception would only occur due to some invalid state. //So, wrap it and toss it. IllegalStateException se = new IllegalStateException(ite.toString()); se.initCause(ite); throw se; } } } public DasApplication getDasApplication() { java.awt.Container p = getParent(); if (p instanceof FormComponent) { return ((FormComponent)p).getDasApplication(); } else { return null; } } public void registerComponent() throws DasException { DasApplication app = getDasApplication(); if (app != null) { NameContext nc = app.getNameContext(); nc.put(getDasName(), this); } } }