/* * Modulname: RendererMultipleChoice * Autor: Eyer Leander * Datum: 08.05.2006 * * (c) Copyright 2005 */ package survey.gui; import info.clearthought.layout.TableLayout; import survey.Survey; import survey.model.Choice; import survey.model.Question; import survey.model.TypeMultiChoice; import javax.swing.*; import javax.swing.text.html.HTMLEditorKit; import javax.swing.text.html.StyleSheet; import javax.swing.text.Document; import java.awt.*; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.util.Iterator; import java.util.Vector; import java.io.StringReader; /** * A renderer for multiple choice questions */ public class RendererMultipleChoice extends Renderer implements ItemListener { // connection to the model private TypeMultiChoice type; private JLabel questionLabel; // private JTextPane questionLabel; private JPanel answerPane; // radio buttons private Vector radioButtons = new Vector(); /** * Constructor */ public RendererMultipleChoice(Question element, TypeMultiChoice type) { super(element); this.type = type; createUI(); setEditable(getQuestion().isEditable()); } /** * Config the user interface */ private void createUI() { //setLayout(new BorderLayout(6, 6)); String mandatoryFlag = getQuestion().isMandatory() ? "* " : ""; String labelContent = "" + mandatoryFlag + getQuestion().getLabel() + ""; /* questionLabel = new JTextPane(); HTMLEditorKit htmlKit = new HTMLEditorKit(); StyleSheet styleSheet = new StyleSheet(); htmlKit.setStyleSheet(styleSheet); questionLabel.setEditorKit(htmlKit); Document doc = htmlKit.createDefaultDocument(); try { htmlKit.read(new StringReader(labelContent), doc, 0); } catch (Exception e) { e.printStackTrace(); } questionLabel.setDocument(doc); questionLabel.setOpaque(false); */ questionLabel = new JLabel(labelContent); ButtonGroup group = new ButtonGroup(); int rows = type.isVertical() ? 0 : 1; int cols = type.isVertical() ? 1 : 0; answerPane = new JPanel(new BorderLayout(12, 12)); if (type.getLeftLabel().equals("") == false) { JLabel label = new JLabel(type.getLeftLabel()); label.setHorizontalAlignment(JLabel.CENTER); answerPane.add(label, BorderLayout.WEST); } JPanel itemPane = new JPanel(new GridLayout(rows, cols, 6, 6)); Iterator choices = type.getChoices(); while (choices.hasNext()) { Choice choice = choices.next(); JRadioButton button = new JRadioButton(choice.getLabel()); button.setFont(Survey.FONT_QUESTION_ANSWER); button.addItemListener(this); button.putClientProperty("choice", choice); group.add(button); itemPane.add(button); radioButtons.add(button); } answerPane.add(itemPane, BorderLayout.CENTER); if (type.getRightLabel().equals("") == false) { JLabel label = new JLabel(type.getRightLabel()); label.setHorizontalAlignment(JLabel.CENTER); answerPane.add(label, BorderLayout.EAST); } if (type.isVertical() || type.startNewline()) { //setLayout(new BorderLayout(6, 6)); //add(questionLabel, BorderLayout.CENTER); //add(answerPane, BorderLayout.SOUTH); setLayout(new TableLayout(new double[][]{{TableLayout.PREFERRED}, {TableLayout.PREFERRED, 6, TableLayout.PREFERRED}})); add(questionLabel, "0, 0"); add(answerPane, "0, 2"); } else { //setLayout(new BorderLayout(24, 24)); //add(questionLabel, BorderLayout.CENTER); //add(answerPane, BorderLayout.EAST); //TODO: workaround. the last line of the label gets cut. if (questionLabel.getPreferredSize().getWidth() > 480) { labelContent = "" + mandatoryFlag + getQuestion().getLabel() + "

"; questionLabel = new JLabel(labelContent); } setLayout(new TableLayout(new double[][]{{500, 24, TableLayout.FILL}, {TableLayout.PREFERRED}})); add(questionLabel, "0, 0"); add(answerPane, "2, 0, R, T"); } } /** * Invoked when an item has been selected or deselected by the user. * The code written for this method performs the operations * that need to occur when an item is selected (or deselected). */ public void itemStateChanged(ItemEvent e) { // Filter deselect events out if (e.getStateChange() == ItemEvent.DESELECTED) { return; } //search the active element for (JRadioButton button : radioButtons) { if (button.isSelected()) { Choice choice = (Choice) button.getClientProperty("choice"); type.setAnswer(choice); } } } /** * Update the question state (i.e. after a model element has been set programatically) */ public void updateRenderer() { String answerId = (String) getQuestion().getContentType().getAnswer(); if (answerId == null) { //TODO!!! unselect all the buttons: not easy workaround return; } //search the active element for (JRadioButton button : radioButtons) { if ( ((Choice)button.getClientProperty("choice")).getId().equals(answerId)) { button.setSelected(true); return; } } throw new Error("answerId not expected: " + answerId); } /** * Change the Editable property */ public void setEditable(boolean editable) { for (JRadioButton btn : radioButtons) { btn.setEnabled(editable); } } /** * Get the preferred width of the question label */ public double getLabelWidth() { return questionLabel.getPreferredSize().width; } /** * Set the width of the question label */ public void setLabelWidth(double width) { Dimension d = new Dimension((int) width, questionLabel.getPreferredSize().height); questionLabel.setMinimumSize(d); questionLabel.setPreferredSize(d); questionLabel.setMaximumSize(d); } /** * Get the size of the answer space */ public double getAnswerSpaceWidth() { return answerPane.getPreferredSize().width; } /** * Set the answer space width */ public void setAnswerSpaceWdith(double width) { Dimension d = new Dimension((int) width, answerPane.getPreferredSize().height); answerPane.setMinimumSize(d); answerPane.setPreferredSize(d); answerPane.setMaximumSize(d); } }