Java tutorial
/* * Copyright 2003-2010 Tufts University Licensed under the * Educational Community License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. You may * obtain a copy of the License at * * http://www.osedu.org/licenses/ECL-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an "AS IS" * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing * permissions and limitations under the License. */ package tufts.vue; import tufts.vue.BrowseDataSource.ConfigField; import javax.swing.*; import java.awt.event.*; import java.awt.*; import java.util.*; import static edu.tufts.vue.ui.ConfigurationUI.*; public class EditLibraryPanel extends JPanel implements ActionListener { private static final org.apache.log4j.Logger Log = org.apache.log4j.Logger.getLogger(EditLibraryPanel.class); private final JButton updateButton = new JButton(VueResources.getString("optiondialog.savechages.save")); private final edu.tufts.vue.dsm.DataSource dataSource; private final tufts.vue.DataSource oldStyleDataSource; private final ContentViewer dsv; private edu.tufts.vue.ui.ConfigurationUI cui; // edu.tufts.vue.ui.ConfigurationUI uses XML to set up its fields. This is probably // overkill and is adding lots of extra complexity -- e.g., to make it easy to // add a single new field to a data-source, we've had to create a whole bunch // of helper code on top of it (see BrowseDataSource) public EditLibraryPanel(ContentViewer dsv, edu.tufts.vue.dsm.DataSource dataSource) { this.dsv = dsv; this.dataSource = dataSource; this.oldStyleDataSource = null; try { final String xml = dataSource.getConfigurationUIHints(); if (DEBUG.DR) Log.debug("OSID-XML: " + xml); cui = new edu.tufts.vue.ui.ConfigurationUI(new java.io.ByteArrayInputStream(xml.getBytes("UTF-8"))); cui.setProperties(dataSource.getConfiguration()); updateButton.addActionListener(this); layoutConfig(); } catch (Throwable t) { Log.error("init", t); } } private static class UIParams { String xml; // possible enumerated types, indexed by key field Map<String, Vector> extraValuesByKey = Collections.EMPTY_MAP; } public EditLibraryPanel(ContentViewer dsv, tufts.vue.DataSource dataSource) { this.dsv = dsv; this.dataSource = null; this.oldStyleDataSource = dataSource; try { //final String xml = getXMLforOldStyleDataSource(dataSource); final UIParams uiParams = getXMLforOldStyleDataSource(dataSource); final String xml = uiParams.xml; if (DEBUG.DR) Log.debug("VUE-XML: " + xml); cui = new edu.tufts.vue.ui.ConfigurationUI(new java.io.ByteArrayInputStream(xml.getBytes("UTF-8")), uiParams.extraValuesByKey); updateButton.addActionListener(this); layoutConfig(); } catch (Throwable t) { Log.error("init", t); } } private UIParams getXMLforOldStyleDataSource(tufts.vue.DataSource dataSource) { final UIParams params = new UIParams(); final StringBuilder b = new StringBuilder(); final String name = dataSource.getDisplayName(); //final String address = dataSource.getAddress(); b.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"); b.append("<configuration>\n"); addField(b, "name", VueResources.getString("dialog.displayname.label"), "Name for this data source", name, SINGLE_LINE_CLEAR_TEXT_CONTROL, 0); if (dataSource instanceof LocalFileDataSource) { // use canned configuration addField(b, "address", VueResources.getString("dialog.startingpath.label"), "The path to start from", dataSource.getAddress(), FILECHOOSER_CONTROL, 0); } else if (dataSource instanceof FavoritesDataSource) { // nothing to add: just uses the name } else if (dataSource instanceof RemoteFileDataSource) { // use canned configuration final RemoteFileDataSource ds = (RemoteFileDataSource) dataSource; addField(b, "address", "Address", "FTP Address", ds.getAddress(), SINGLE_LINE_CLEAR_TEXT_CONTROL, 0); addField(b, "username", "Username", "FTP site username", ds.getUserName(), SINGLE_LINE_CLEAR_TEXT_CONTROL, 16); addField(b, "pasword", "Password", "FTP site password", ds.getPassword(), SINGLE_LINE_MASKED_TEXT_CONTROL, 16); } else if (dataSource instanceof tufts.vue.BrowseDataSource) { final tufts.vue.BrowseDataSource ds = (tufts.vue.BrowseDataSource) dataSource; final java.util.Map<String, Vector> extraValuesMap = new java.util.HashMap(); for (ConfigField f : ds.getConfigurationUIFields()) { addField(b, f.key, f.title, f.description, f.value, f.uiControl, f.maxLen); if (f.values != null) extraValuesMap.put(f.key, f.values); } params.extraValuesByKey = extraValuesMap; } b.append("</configuration>"); params.xml = b.toString(); //return b.toString(); return params; } public static void addField(StringBuilder b, String key, String title, String description, String value, int uiControl, int max) { b.append("<field>"); b.append("<key>" + key + "</key>"); b.append("<title>" + title + "</title>"); b.append("<description>" + description + "</description>"); b.append("<default>"); if (value != null) b.append(org.apache.commons.lang.StringEscapeUtils.escapeXml(value)); b.append("</default>"); b.append("<mandatory>true</mandatory>"); // currently required as input, but ignored for effect by ConfigurationUI impl b.append("<maxChars>"); b.append(max); b.append("</maxChars>"); b.append("<ui>" + uiControl + "</ui>"); b.append("</field>\n"); } private void layoutConfig() { if (DEBUG.BOXES) { cui.setBorder(BorderFactory.createLineBorder(Color.green)); this.setBorder(BorderFactory.createLineBorder(Color.red)); } final GridBagConstraints gbc = new GridBagConstraints(); final GridBagLayout gridbag = new GridBagLayout(); setLayout(gridbag); // Set up common GBC config: gbc.insets = (Insets) tufts.vue.gui.GUI.WidgetInsets.clone(); gbc.insets.bottom = 0; gbc.weightx = 1; gbc.weighty = 0; //------------------------------------------------------- // Add ConfigurationUI //------------------------------------------------------- gbc.anchor = GridBagConstraints.NORTH; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.gridy = 0; add(cui, gbc); //------------------------------------------------------- // Add Save button //------------------------------------------------------- gbc.gridwidth = 1; gbc.gridy = 1; gbc.ipadx = 15; // this actually makes the button wider gbc.anchor = GridBagConstraints.NORTHEAST; gbc.fill = GridBagConstraints.NONE; add(updateButton, gbc); //------------------------------------------------------- // Add a default vertical expander so above content // will float to top. //------------------------------------------------------- gbc.ipadx = 0; gbc.gridy = 2; gbc.weighty = 1; // this is the key for the expander to work (non-zero y-weight) gbc.fill = GridBagConstraints.BOTH; gbc.gridheight = GridBagConstraints.REMAINDER; gbc.gridwidth = 0; final JComponent fill; if (DEBUG.BOXES) { fill = new JLabel(VueResources.getString("jlabel.fill"), JLabel.CENTER); fill.setBackground(Color.gray); fill.setOpaque(true); } else { fill = new JPanel(); } add(fill, gbc); } public void actionPerformed(ActionEvent ae) { try { if (ae.getSource() instanceof JButton) { if (this.dataSource != null) { this.dataSource.setConfiguration(cui.getProperties()); this.dsv.setActiveDataSource(this.dataSource); // refresh edu.tufts.vue.dsm.DataSourceManager dsm = edu.tufts.vue.dsm.impl.VueDataSourceManager .getInstance(); dsm.save(); } else if (this.oldStyleDataSource != null) { this.oldStyleDataSource.setConfiguration(cui.getProperties()); this.dsv.setActiveDataSource(this.oldStyleDataSource); // refresh } } DataSourceViewer.saveDataSourceViewer(); } catch (Throwable t) { t.printStackTrace(); VueUtil.alert(VueResources.getString("dialog.config.message") + t.getMessage(), VueResources.getString("dialog.config.title")); } } }