task 4

src/ch/hevs/isc/slopify_v2/GUI.scala

@@ -1,5 +1,6 @@
 package ch.hevs.isc.slopify_v2
 
+import java.awt.{GridBagConstraints, GridBagLayout, LayoutManager}
 import java.util
 import javax.swing._
 import javax.swing.table.{DefaultTableModel, TableModel, TableRowSorter}
@@ -12,7 +13,11 @@ class GUI extends JFrame {
   val artistsListModel: DefaultListModel[String] = new DefaultListModel[String]()
   val artistsList: JList[String] = new JList(artistsListModel)
   artistsList.setLayoutOrientation(JList.VERTICAL)
-  val col1: JScrollPane = new JScrollPane(artistsList)
+  val col1: JPanel = new JPanel()
+  val col1Layout: GridBagLayout = new GridBagLayout()
+  col1.setLayout(col1Layout)
+
+  val artistsPane: JScrollPane = new JScrollPane(artistsList)
   artistsList.addListSelectionListener(_ => {
     val artistName: String = artistsList.getSelectedValue
     val artist: Option[Artist] = db.getArtistByName(artistName)
@@ -23,6 +28,23 @@ class GUI extends JFrame {
     }
   })
 
+  val artistsSearchBar: JTextField = new JTextField()
+  artistsSearchBar.addActionListener(_ => updateArtistsSearch())
+
+  val col1Constraints: GridBagConstraints = new GridBagConstraints()
+  col1Constraints.fill = GridBagConstraints.BOTH
+  col1Constraints.gridx = 0
+  col1Constraints.gridy = 0
+  col1Constraints.weightx = 1
+  col1Constraints.weighty = 1
+  col1.add(artistsPane, col1Constraints)
+
+  col1Constraints.fill = GridBagConstraints.HORIZONTAL
+  col1Constraints.gridx = 0
+  col1Constraints.gridy = 1
+  col1Constraints.weighty = 0
+  col1.add(artistsSearchBar, col1Constraints)
+
   // Albums
   val albumsListModel: DefaultListModel[String] = new DefaultListModel[String]()
   val albumsList: JList[String] = new JList(albumsListModel)
@@ -162,6 +184,21 @@ class GUI extends JFrame {
   def selectSong(song: Song): Unit = {
     curSong = Some(song)
   }
+
+  def updateArtistsSearch(): Unit = {
+    val search: String = artistsSearchBar.getText.toLowerCase
+
+    clearArtists()
+    clearAlbums()
+    clearSongs()
+    var artists: Array[Artist] = db.getArtists().sortBy(_.name)
+    if (search.nonEmpty) {
+      artists = artists.filter(_.name.toLowerCase.contains(search))
+    }
+    for (artist: Artist <- artists) {
+      addArtist(artist)
+    }
+  }
 }
 
 object GUI {