X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fio%2FJalviewFileView.java;h=18114f34b747c6fc44b02fa42b4fc49ab5b020fa;hb=5b9fcd4e9349485a0be84260b3199c746adfbe92;hp=5e0f5888128ecf6023b2e24032e55efbe164c3bf;hpb=153dd62dc91da13ae732600e6ea55ddbe15eab39;p=jalview.git

diff --git a/src/jalview/io/JalviewFileView.java b/src/jalview/io/JalviewFileView.java
index 5e0f588..18114f3 100755
--- a/src/jalview/io/JalviewFileView.java
+++ b/src/jalview/io/JalviewFileView.java
@@ -1,79 +1,101 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.6)
- * Copyright (C) 2010 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
  * 
  * This file is part of Jalview.
  * 
  * Jalview 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.
- * 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
  * Jalview 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
  */
 package jalview.io;
 
-import java.io.*;
-import java.util.*;
+import java.io.File;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
 
-import javax.swing.*;
-import javax.swing.filechooser.*;
+import javax.swing.Icon;
+import javax.swing.ImageIcon;
+import javax.swing.filechooser.FileView;
 
 public class JalviewFileView extends FileView
 {
-  static Hashtable alignSuffix = new Hashtable();
+  private static Map<String, String> extensions;
+
+  private static Map<String, ImageIcon> icons;
 
-  static
+  private void loadExtensions()
   {
-    alignSuffix.put("fasta", "Fasta file");
-    alignSuffix.put("fa", "Fasta file");
-    alignSuffix.put("fastq", "Fasta file");
-    alignSuffix.put("blc", "BLC file");
-    alignSuffix.put("msf", "MSF file");
-    alignSuffix.put("pfam", "PFAM file");
-    alignSuffix.put("aln", "Clustal file");
-    alignSuffix.put("pir", "PIR file");
-    alignSuffix.put("jar", "Jalview file");
+    extensions = new HashMap<>();
+    for (FileFormatI ff : FileFormats.getInstance().getFormats())
+    {
+      String desc = ff.getName() + " file";
+      String exts = ff.getExtensions();
+      for (String ext : exts.split(","))
+      {
+        ext = ext.trim().toLowerCase();
+        extensions.put(ext,
+                desc + ("jar".equals(ext) ? " (old)" : ""));
+      }
+    }
   }
 
+  @Override
   public String getTypeDescription(File f)
   {
     String extension = getExtension(f);
-    String type = null;
-
+    String type = getDescriptionForExtension(extension);
     if (extension != null)
     {
-      if (alignSuffix.containsKey(extension))
+      if (extensions.containsKey(extension))
       {
-        type = alignSuffix.get(extension).toString();
+        type = extensions.get(extension).toString();
       }
     }
 
     return type;
   }
 
+  private String getDescriptionForExtension(String extension)
+  {
+    synchronized (this)
+    {
+      if (extensions == null)
+      {
+        loadExtensions();
+      }
+    }
+    return extensions.get(extension);
+  }
+
+  @Override
   public Icon getIcon(File f)
   {
     String extension = getExtension(f);
     Icon icon = null;
 
-    if (extension != null)
+    if (getDescriptionForExtension(extension) != null)
     {
-      if (alignSuffix.containsKey(extension))
-      {
-        icon = createImageIcon("/images/file.png");
-      }
+      icon = getImageIcon("/images/file.png");
     }
 
     return icon;
   }
 
-  /*
-   * Get the extension of a file.
+  /**
+   * Returns the extension of a file (part of the name after the last period),
+   * in lower case, or null if the name ends in or does not include a period.
    */
   public static String getExtension(File f)
   {
@@ -89,22 +111,44 @@ public class JalviewFileView extends FileView
     return ext;
   }
 
-  /** Returns an ImageIcon, or null if the path was invalid. */
-  protected static ImageIcon createImageIcon(String path)
+  /**
+   * Returns an ImageIcon, or null if the file was not found
+   * 
+   * @param filePath
+   */
+  protected ImageIcon getImageIcon(String filePath)
   {
-    java.net.URL imgURL = JalviewFileView.class.getResource(path);
-
-    if (imgURL != null)
+    /*
+     * we reuse a single icon object per path here
+     */
+    synchronized (this)
     {
-      return new ImageIcon(imgURL);
+      if (icons == null)
+      {
+        icons = new HashMap<>();
+      }
+      if (!icons.containsKey(filePath))
+      {
+        ImageIcon icon = null;
+        URL imgURL = JalviewFileView.class.getResource(filePath);
+        if (imgURL != null)
+        {
+          icon = new ImageIcon(imgURL);
+        }
+        else
+        {
+          System.err.println(
+                  "JalviewFileView.createImageIcon: Couldn't find file: "
+                          + filePath);
+        }
+        icons.put(filePath, icon);
+      }
     }
-    else
-    {
-      System.err
-              .println("JalviewFileView.createImageIcon: Couldn't find file: "
-                      + path);
 
-      return null;
-    }
+    /*
+     * return the image from the table (which may be null if
+     * icon creation failed)
+     */
+    return icons.get(filePath);
   }
 }