Close issue #9 - adding multiple standard rulesets

src/main/java/info/gianlucacosta/easypmd/ide/options/RuleSetsPanel.java

@@ -28,11 +28,13 @@
 import info.gianlucacosta.helios.conversions.CollectionToArrayConverter;
 import info.gianlucacosta.helios.product.ProductInfoService;
 import info.gianlucacosta.helios.swing.jlist.AdvancedSelectionListModel;
+
 import java.io.File;
-import net.sourceforge.pmd.RuleSet;
 
-import javax.swing.*;
 import java.util.Collection;
+import javax.swing.JFileChooser;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
 import javax.swing.filechooser.FileFilter;
 
 /**
@@ -196,24 +198,22 @@ public void actionPerformed(java.awt.event.ActionEvent evt) {
     }// </editor-fold>//GEN-END:initComponents
 
     private void addStandardRuleSetButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_addStandardRuleSetButtonActionPerformed
-        Collection<RuleSetWrapper> standardRuleSetWrappers = standardRulesetsCatalog.getRuleSetWrappers();
+        StandardRuleSetsInputPanel inputPanel = new StandardRuleSetsInputPanel(standardRulesetsCatalog);
 
-        Object userChoice = JOptionPane.showInputDialog(
+        int userChoice = JOptionPane.showConfirmDialog(
                 null,
-                "Choose a standard rule set:",
+                inputPanel,
                 pluginInfoService.getName(),
-                JOptionPane.PLAIN_MESSAGE,
-                null,
-                ruleSetsArrayConverter.convert(standardRuleSetWrappers),
-                null);
+                JOptionPane.OK_CANCEL_OPTION
+        );
 
-        if (userChoice == null) {
+        if (userChoice == JOptionPane.CANCEL_OPTION) {
             return;
         }
 
-        RuleSet chosenRuleSet = ((RuleSetWrapper) userChoice).getRuleSet();
-
-        ruleSetsModel.addElement(chosenRuleSet.getFileName());
+        inputPanel.getSelectedRuleSets().forEach(ruleSet
+                -> ruleSetsModel.addElement(ruleSet.getFileName())
+        );
     }//GEN-LAST:event_addStandardRuleSetButtonActionPerformed
 
     private void removeButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_removeButtonActionPerformed

src/main/java/info/gianlucacosta/easypmd/ide/options/StandardRuleSetsInputPanel.java

@@ -0,0 +1,68 @@
+/*
+ * ==========================================================================%%#
+ * EasyPmd
+ * ===========================================================================%%
+ * Copyright (C) 2009 - 2015 Gianluca Costa
+ * ===========================================================================%%
+ * This program 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 3 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, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * ==========================================================================%##
+ */
+package info.gianlucacosta.easypmd.ide.options;
+
+import info.gianlucacosta.easypmd.pmdscanner.RuleSetWrapper;
+import info.gianlucacosta.easypmd.pmdscanner.StandardRuleSetsCatalog;
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.util.Collection;
+import java.util.stream.Stream;
+import javax.swing.BorderFactory;
+import javax.swing.DefaultListModel;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import net.sourceforge.pmd.RuleSet;
+
+/**
+ * Panel showing a list of available standard rule sets and allowing multiple selection
+ */
+public final class StandardRuleSetsInputPanel extends JPanel {
+    private JList<RuleSetWrapper> inputList;
+
+    public StandardRuleSetsInputPanel(StandardRuleSetsCatalog standardRuleSetsCatalog) {
+        Collection<RuleSetWrapper> standardRuleSetWrappers = standardRuleSetsCatalog.getRuleSetWrappers();
+
+        setLayout(new BorderLayout());
+
+        JLabel inputLabel = new JLabel("Choose a standard rule set:");
+        inputLabel.setBorder(BorderFactory.createEmptyBorder(0, 0, 7, 0));
+        add(inputLabel, BorderLayout.NORTH);
+
+        DefaultListModel<RuleSetWrapper> inputModel = new DefaultListModel<>();
+        standardRuleSetWrappers.forEach(ruleSetWrapper -> inputModel.addElement(ruleSetWrapper));
+
+        inputList = new JList<>(inputModel);        
+
+        JScrollPane inputScroll = new JScrollPane(inputList);        
+        add(inputScroll, BorderLayout.CENTER);
+
+        setPreferredSize(new Dimension(450, 200));
+    }
+
+    public Stream<RuleSet> getSelectedRuleSets() {
+        return inputList.getSelectedValuesList().stream()
+                .map(ruleSetWrapper -> ruleSetWrapper.getRuleSet());                
+    }    
+}