Changes to the project to allow for Filter directory selection

imagelab/DisplayImage.java

@@ -1,9 +1,13 @@
 package imagelab;
 
 import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
 import java.awt.Image;
 import java.awt.Color;
 import java.awt.image.MemoryImageSource;
+import java.awt.event.ActionListener;
+import java.awt.event.ActionEvent;
+import java.awt.FileDialog;
 
 /**
  * Graphics frame used to display an image.
@@ -45,6 +49,10 @@ public class DisplayImage extends ILFrame {
  /** y-coordinate for next window. */
  private static int yspot = YMAX;
 
+ /** Accessible menu bar for DisplayImage. */
+ private static JMenuBar myMenuBar;
+
+
  /**
  * This constructor takes the image object to display
  * and a string to use as the title of the window.
@@ -104,11 +112,12 @@ public DisplayImage(
  setBounds(xspot, yspot, width, height + EXTRA_HEIGHT);
  WindowCloser wc = new WindowCloser(this);
  this.addWindowListener(wc);
- JMenuBar myMenuBar = new JMenuBar();
+
+ myMenuBar = new JMenuBar();
  myMenuBar.add(ImageLab.newFileMenu(this));
  myMenuBar.add(ImageLab.newFilterMenu());
+
  setJMenuBar(myMenuBar);
  setVisible(true);
  }
-
 } //class

imagelab/ImageLab.java

@@ -8,6 +8,7 @@
 import javax.swing.JFrame;
 import javax.swing.JButton;
 import javax.swing.JOptionPane;
+import javax.swing.JFileChooser;
 import javax.swing.filechooser.FileSystemView;
 import java.awt.FileDialog;
 import java.awt.Container;
@@ -41,7 +42,7 @@ public class ImageLab {
  /** Holds all open images (ImgProvider objects). */
  private static List<ImgProvider> images = new ArrayList<ImgProvider>();
 
- /** The directory that holds filter classes. (TODO) */
+ /** The directory that holds filter classes. */
  private static String filterDir = FILTER_DIR;
 
  /** Holds the actual filter objects. */
@@ -149,6 +150,11 @@ private JMenuBar buildMenus() {
  JMenuItem save = new JMenuItem("Save", 'S');
  file.add(save);
  save.addActionListener(makeSaveListener());
+
+ JMenuItem findFilter = new JMenuItem("Configure Filter Directory", 'F');
+ file.add(findFilter);
+ findFilter.addActionListener(makeOpenFilterDirListener());
+
  JMenuItem quit = new JMenuItem("Quit", 'Q');
  file.add(quit);
  quit.addActionListener(new ActionListener() {
@@ -158,17 +164,62 @@ public void actionPerformed(
  }
  }
  );
- JMenu filter = new JMenu("Filter");
- mbar.add(filter);
+
+ mbar.add(newFilterMenu());
+
+ return mbar;
+ } //buildMenus
+
+ /**
+ * Return a File menu for a single image.
+ * Provides "Play", "Save" and "Close".
+ *
+ * @param who Display Image used for Action Event
+ * @return the new File menu
+ */
+ public static JMenu newFileMenu(final DisplayImage who) {
+ JMenu fileMenu = new JMenu("File");
+ // JMenuItem open = new JMenuItem("Open",'O');
+ // fileMenu.add(open);
+ // open.addActionListener(makeOpenListener());
+ JMenuItem play = new JMenuItem("Play", 'P');
+ fileMenu.add(play);
+ play.addActionListener(makePlayListener());
+ JMenuItem save = new JMenuItem("Save", 'S');
+ fileMenu.add(save);
+ save.addActionListener(makeSaveListener());
+ JMenuItem close = new JMenuItem("Close", 'C');
+ fileMenu.add(close);
+ close.addActionListener(new ActionListener() {
+ public void actionPerformed(final ActionEvent actev) {
+ who.setVisible(false);
+ who.byebye();
+ }
+ });
+ return fileMenu;
+ }
+
+ /**
+ * Return a Filter menu with the filters found in the location selected.
+ * Provides access to all filters.
+ *
+ * @return the new Filter menu
+ */
+ public static JMenu newFilterMenu() {
+
  //Find filters and build corresponding menu items.
  //Look at each .class file in filterDir.
  //Do the classForName stuff and enter into filter menu.
  //System.out.println("**********finding filters***********");
  FileSystemView fsv = FileSystemView.getFileSystemView();
  //File [] fil = fsv.getFiles(new File("."),true);
  File[] fil = fsv.getFiles(new File(filterDir), true);
+
  //System.out.println("Found " + fil.length + " possible filters");
  String clName = " "; //holds name of class
+
+ JMenu filter = new JMenu("Filter");
+
  for (int k = 0; k < fil.length; k++) {
  if (fil[k].getName().endsWith("class")) {
  Class<?> cl;
@@ -180,7 +231,7 @@ public void actionPerformed(
  clName = "filters." + clName.substring(0, spot);
  //System.out.println("Trying: " + clName);
  cl = Class.forName(clName);
- //System.out.println("Class for name is: " + cl);
+ System.out.println("Class for name is: " + cl);
  Class<?>[] interfaces = cl.getInterfaces();
  boolean isFilter = false;
  for (int j = 0; j < interfaces.length; j++) {
@@ -203,52 +254,7 @@ public void actionPerformed(
 
  } //for k
 
- return mbar;
- } //buildMenus
-
- /**
- * Return a File menu for a single image.
- * Provides "Play", "Save" and "Close".
- *
- * @param who Display Image used for Action Event
- * @return the new File menu
- */
- public static JMenu newFileMenu(final DisplayImage who) {
- JMenu fileMenu = new JMenu("File");
- // JMenuItem open = new JMenuItem("Open",'O');
- // fileMenu.add(open);
- // open.addActionListener(makeOpenListener());
- JMenuItem play = new JMenuItem("Play", 'P');
- fileMenu.add(play);
- play.addActionListener(makePlayListener());
- JMenuItem save = new JMenuItem("Save", 'S');
- fileMenu.add(save);
- save.addActionListener(makeSaveListener());
- JMenuItem close = new JMenuItem("Close", 'C');
- fileMenu.add(close);
- close.addActionListener(new ActionListener() {
- public void actionPerformed(final ActionEvent actev) {
- who.setVisible(false);
- who.byebye();
- }
- });
- return fileMenu;
- }
-
- /**
- * Return a Filter menu for a single image.
- * Provides access to all filters.
- *
- * @return the new Filter menu
- */
- public static JMenu newFilterMenu() {
- JMenu filterMenu = new JMenu("Filter");
- for (int i = 0; i < filters.size(); i++) {
- JMenuItem jmi = new JMenuItem(filters.get(i).getMenuLabel());
- filterMenu.add(jmi);
- jmi.addActionListener(makeActionListener(filters.get(i)));
- }
- return filterMenu;
+ return filter;
  }
 
  /**
@@ -275,6 +281,32 @@ public void actionPerformed(final ActionEvent ev) {
  };
  } //makeActionListener
 
+ /**
+ * Create an ActionListener for selecting the filter directory.
+ *
+ * @return the ActionListener used to perform opening the filter directory
+ */
+ public static ActionListener makeOpenFilterDirListener() {
+ return new ActionListener() {
+ public void actionPerformed(final ActionEvent e) {
+ JFileChooser fd;
+ fd = new JFileChooser();
+ fd.setDialogTitle("Pick Filter Folder");
+ fd.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
+
+ if (fd.showOpenDialog(frame) == JFileChooser.APPROVE_OPTION) { 
+ filterDir = fd.getSelectedFile().getAbsolutePath();
+ } 
+
+ System.out.println("Listener - The directory name is " + filterDir);
+ menubar.remove(1);
+ menubar.add(newFilterMenu());
+ frame.setJMenuBar(menubar);
+
+ } //actionPerformed
+ };
+ } // makeOpenFilterDirListener
+
  /**
  * Create an ActionListener for opening an image file.
  *