src/Base64Dialog.java

   1 import java.awt.Dimension;\r
   2 import java.awt.Insets;\r
   3 import java.awt.event.ActionEvent;\r
   4 import java.awt.event.ActionListener;\r
   5 import java.util.regex.Pattern;\r
   6 \r
   7 import javax.swing.Box;\r
   8 import javax.swing.BoxLayout;\r
   9 import javax.swing.JButton;\r
  10 import javax.swing.JDialog;\r
  11 import javax.swing.JLabel;\r
  12 import javax.swing.JPanel;\r
  13 import javax.swing.JScrollPane;\r
  14 import javax.swing.JTextArea;\r
  15 \r
  16 import org.apache.commons.codec.binary.Base64;\r
  17 \r
  18 /**\r
  19  * Base64テキスト入力ダイアログ\r
  20  */\r
  21 public class Base64Dialog extends JDialog {\r
  22         private static final Insets ZERO_INSETS = new Insets(0,0,0,0);\r
  23         private Base64TextArea base64TextArea = null;\r
  24         private JButton addBase64Button;\r
  25         private JButton clearButton;\r
  26         private boolean base64Available;\r
  27         private static class Base64TextArea extends JTextArea {\r
  28                 private static final Pattern headerLine =\r
  29                         Pattern.compile( "^.*:.*$", Pattern.MULTILINE );\r
  30                 public Base64TextArea(int rows, int columns) {\r
  31                         super(rows,columns);\r
  32                 }\r
  33                 public byte[] getBinary() {\r
  34                         String text = headerLine.matcher(getText()).replaceAll("");\r
  35                         return Base64.decodeBase64(text.getBytes());\r
  36                 }\r
  37                 public void setBinary(byte[] binary_data, String content_type, String filename) {\r
  38                         if( binary_data != null && binary_data.length > 0 ) {\r
  39                                 String header = "";\r
  40                                 if( content_type != null && filename != null ) {\r
  41                                         header += "Content-Type: " + content_type + "; name=\"" + filename + "\"\n";\r
  42                                         header += "Content-Transfer-Encoding: base64\n";\r
  43                                         header += "\n";\r
  44                                 }\r
  45                                 setText(header + new String(Base64.encodeBase64Chunked(binary_data)) + "\n");\r
  46                         }\r
  47                 }\r
  48         }\r
  49         /**\r
  50          * Base64テキスト入力ダイアログを構築します。\r
  51          * @param midiEditor 親画面となるMIDIエディタ\r
  52          */\r
  53         public Base64Dialog(MidiEditor midiEditor) {\r
  54                 this.midiEditor = midiEditor;\r
  55                 setTitle("Base64-encoded MIDI sequence - " + ChordHelperApplet.VersionInfo.NAME);\r
  56                 try {\r
  57                         Base64.decodeBase64( "".getBytes() );\r
  58                         base64Available = true;\r
  59                 } catch( NoClassDefFoundError e ) {\r
  60                         base64Available = false;\r
  61                 }\r
  62                 if( base64Available ) {\r
  63                         add(new JPanel() {{\r
  64                                 setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));\r
  65                                 add(new JPanel() {{\r
  66                                         setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS ));\r
  67                                         add(new JLabel("Base64-encoded MIDI sequence:"));\r
  68                                         add(Box.createRigidArea(new Dimension(10, 0)));\r
  69                                         add(addBase64Button = new JButton(\r
  70                                                 "Base64 Decode & Add to PlayList",\r
  71                                                 new ButtonIcon(ButtonIcon.EJECT_ICON)\r
  72                                         ) {{\r
  73                                                 setMargin(ZERO_INSETS);\r
  74                                                 setToolTipText("Base64デコードして、プレイリストへ追加");\r
  75                                         }});\r
  76                                         add(clearButton = new JButton("Clear") {{\r
  77                                                 setMargin(ZERO_INSETS);\r
  78                                         }});\r
  79                                 }});\r
  80                                 add(new JScrollPane(base64TextArea = new Base64TextArea(8,56)));\r
  81                         }});\r
  82                         addBase64Button.addActionListener(new ActionListener() {\r
  83                                 @Override\r
  84                                 public void actionPerformed(ActionEvent e) {\r
  85                                         MidiEditor midiEditor = Base64Dialog.this.midiEditor;\r
  86                                         int lastIndex = midiEditor.addSequence(getMIDIData(), null);\r
  87                                         if( lastIndex < 0 ) {\r
  88                                                 base64TextArea.requestFocusInWindow();\r
  89                                                 lastIndex = midiEditor.sequenceListTableModel.getRowCount() - 1;\r
  90                                         }\r
  91                                         midiEditor.seqSelectionModel.setSelectionInterval(lastIndex, lastIndex);\r
  92                                         setVisible(false);\r
  93                                 }\r
  94                         });\r
  95                         clearButton.addActionListener(new ActionListener() {\r
  96                                 @Override\r
  97                                 public void actionPerformed(ActionEvent e) {\r
  98                                         base64TextArea.setText(null);\r
  99                                 }\r
 100                         });\r
 101                 }\r
 102                 // setLocationRelativeTo(applet);\r
 103                 setBounds( 300, 250, 660, 300 );\r
 104         }\r
 105         private MidiEditor midiEditor;\r
 106         /**\r
 107          * {@link Base64} が使用できるかどうかを返します。\r
 108          * @return Apache Commons Codec ライブラリが利用できる状態ならtrue\r
 109          */\r
 110         public boolean isBase64Available() {\r
 111                 return base64Available;\r
 112         }\r
 113         /**\r
 114          * バイナリー形式でMIDIデータを返します。\r
 115          * @return バイナリー形式のMIDIデータ\r
 116          */\r
 117         public byte[] getMIDIData() {\r
 118                 return base64TextArea.getBinary();\r
 119         }\r
 120         /**\r
 121          * バイナリー形式のMIDIデータを設定します。\r
 122          * @param midiData バイナリー形式のMIDIデータ\r
 123          */\r
 124         public void setMIDIData( byte[] midiData ) {\r
 125                 base64TextArea.setBinary(midiData, null, null);\r
 126         }\r
 127         /**\r
 128          * バイナリー形式のMIDIデータを、ファイル名をつけて設定します。\r
 129          * @param midiData バイナリー形式のMIDIデータ\r
 130          * @param filename ファイル名\r
 131          */\r
 132         public void setMIDIData( byte[] midiData, String filename ) {\r
 133                 base64TextArea.setBinary(midiData, "audio/midi", filename);\r
 134                 base64TextArea.selectAll();\r
 135         }\r
 136         /**\r
 137          * Base64形式でMIDIデータを返します。\r
 138          * @return  Base64形式のMIDIデータ\r
 139          */\r
 140         public String getBase64Data() {\r
 141                 return base64TextArea.getText();\r
 142         }\r
 143         /**\r
 144          * Base64形式のMIDIデータを設定します。\r
 145          * @param base64Data Base64形式のMIDIデータ\r
 146          */\r
 147         public void setBase64Data( String base64Data ) {\r
 148                 base64TextArea.setText(null);\r
 149                 base64TextArea.append(base64Data);\r
 150         }\r
 151 }\r