1 files changed, 118 insertions, 0 deletions
diff --git a/src/com/jsyn/swing/InstrumentBrowser.java b/src/com/jsyn/swing/InstrumentBrowser.java
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+/*
+ * Copyright 2012 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache 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.apache.org/licenses/LICENSE-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 com.jsyn.swing;
+
+import java.awt.Dimension;
+import java.awt.GridLayout;
+import java.util.ArrayList;
+
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.ListSelectionModel;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+
+import com.jsyn.util.InstrumentLibrary;
+import com.jsyn.util.VoiceDescription;
+
+/**
+ * Display a list of VoiceDescriptions and their associated presets. Notify PresetSelectionListeners
+ * when a preset is selected.
+ * 
+ * @author Phil Burk (C) 2012 Mobileer Inc
+ */
+@SuppressWarnings("serial")
+public class InstrumentBrowser extends JPanel {
+    private InstrumentLibrary library;
+    private JList instrumentList;
+    private JScrollPane listScroller2;
+    private VoiceDescription voiceDescription;
+    private ArrayList<PresetSelectionListener> listeners = new ArrayList<PresetSelectionListener>();
+
+    public InstrumentBrowser(InstrumentLibrary library) {
+        this.library = library;
+        JPanel horizontalPanel = new JPanel();
+        horizontalPanel.setLayout(new GridLayout(1, 2));
+
+        instrumentList = createList(library.getVoiceDescriptions());
+        instrumentList.addListSelectionListener(new ListSelectionListener() {
+            @Override
+            public void valueChanged(ListSelectionEvent e) {
+                if (e.getValueIsAdjusting() == false) {
+                    int n = instrumentList.getSelectedIndex();
+                    if (n >= 0) {
+                        showPresetList(n);
+                    }
+                }
+            }
+        });
+
+        JScrollPane listScroller1 = new JScrollPane(instrumentList);
+        listScroller1.setPreferredSize(new Dimension(250, 120));
+        add(listScroller1);
+
+        showPresetList(0);
+    }
+
+    public void addPresetSelectionListener(PresetSelectionListener listener) {
+        listeners.add(listener);
+    }
+
+    public void removePresetSelectionListener(PresetSelectionListener listener) {
+        listeners.remove(listener);
+    }
+
+    private void firePresetSelectionListeners(VoiceDescription voiceDescription, int presetIndex) {
+        for (PresetSelectionListener listener : listeners) {
+            listener.presetSelected(voiceDescription, presetIndex);
+        }
+    }
+
+    private void showPresetList(int n) {
+        if (listScroller2 != null) {
+            remove(listScroller2);
+        }
+        voiceDescription = library.getVoiceDescriptions()[n];
+        final JList presetList = createList(voiceDescription.getPresetNames());
+        presetList.addListSelectionListener(new ListSelectionListener() {
+            @Override
+            public void valueChanged(ListSelectionEvent e) {
+                if (e.getValueIsAdjusting() == false) {
+                    int n = presetList.getSelectedIndex();
+                    if (n >= 0) {
+                        firePresetSelectionListeners(voiceDescription, n);
+                    }
+                }
+            }
+        });
+
+        listScroller2 = new JScrollPane(presetList);
+        listScroller2.setPreferredSize(new Dimension(250, 120));
+        add(listScroller2);
+        presetList.setSelectedIndex(0);
+        validate();
+    }
+
+    private JList createList(Object[] data) {
+        JList list = new JList(data);
+        list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
+        list.setLayoutOrientation(JList.VERTICAL);
+        list.setVisibleRowCount(-1);
+        return list;
+    }
+}