JAL-1988 Added a saves in progress check for quit
[jalview.git] / src / jalview / io / BackupFiles.java
index 1c8525b..529e1b2 100644 (file)
  */
 package jalview.io;
 
-import jalview.bin.Cache;
-import jalview.gui.Desktop;
-import jalview.gui.JvOptionPane;
-import jalview.util.MessageManager;
-import jalview.util.Platform;
-
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -35,13 +29,16 @@ import java.nio.file.StandardCopyOption;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.TreeMap;
 
 import jalview.bin.Cache;
+import jalview.bin.Console;
 import jalview.gui.Desktop;
 import jalview.gui.JvOptionPane;
 import jalview.util.MessageManager;
+import jalview.util.Platform;
 
 /*
  * BackupFiles used for manipulating (naming rolling/deleting) backup/version files when an alignment or project file is saved.
@@ -109,6 +106,52 @@ public class BackupFiles
 
   private static final String oldTempFileSuffix = "_oldfile_tobedeleted";
 
+  private static List<BackupFiles> savesInProgress = new ArrayList<>();
+
+  private boolean addSaveInProgress()
+  {
+    if (savesInProgress.contains(this))
+    {
+      return false;
+    }
+    else
+    {
+      savesInProgress.add(this);
+      return true;
+    }
+  }
+
+  private boolean removeSaveInProgress()
+  {
+    if (savesInProgress.contains(this))
+    {
+      // remove all occurrences
+      while (savesInProgress.remove(this))
+      {
+      }
+      return true;
+    }
+    else
+    {
+      return false;
+    }
+  }
+
+  public static boolean hasSavesInProgress()
+  {
+    return savesInProgress.size() > 0;
+  }
+
+  public static List<File> savesInProgressFiles()
+  {
+    List<File> files = new ArrayList<>();
+    for (BackupFiles bfile : savesInProgress)
+    {
+      files.add(bfile.getFile());
+    }
+    return files;
+  }
+
   public BackupFiles(String filename)
   {
     this(new File(filename));
@@ -120,6 +163,10 @@ public class BackupFiles
   {
     classInit();
     this.file = file;
+
+    // add this file from the save in progress stack
+    addSaveInProgress();
+
     BackupFilesPresetEntry bfpe = BackupFilesPresetEntry
             .getSavedBackupEntry();
     this.suffix = bfpe.suffix;
@@ -136,30 +183,47 @@ public class BackupFiles
       {
         String tempfilename = file.getName();
         File tempdir = file.getParentFile();
+        Console.trace(
+                "BACKUPFILES [file!=null] attempting to create temp file for "
+                        + tempfilename + " in dir " + tempdir);
         temp = File.createTempFile(tempfilename,
                 TEMP_FILE_EXT + newTempFileSuffix, tempdir);
+        Console.debug(
+                "BACKUPFILES using temp file " + temp.getAbsolutePath());
       }
       else
       {
+        Console.trace(
+                "BACKUPFILES [file==null] attempting to create default temp file "
+                        + DEFAULT_TEMP_FILE + " with extension "
+                        + TEMP_FILE_EXT);
         temp = File.createTempFile(DEFAULT_TEMP_FILE, TEMP_FILE_EXT);
       }
     } catch (IOException e)
     {
-      System.out.println(
-              "Could not create temp file to save into (IOException)");
+      Console.error("Could not create temp file to save to (IOException)");
+      Console.error(e.getMessage());
+      Console.debug(Cache.getStackTraceString(e));
     } catch (Exception e)
     {
-      System.out.println("Exception ctreating temp file for saving");
+      Console.error("Exception creating temp file for saving");
+      Console.debug(Cache.getStackTraceString(e));
     }
     this.setTempFile(temp);
   }
 
   public static void classInit()
   {
-    setEnabled(Cache.getDefault(ENABLED, !Platform.isJS()));
+    Console.initLogger();
+    Console.trace("BACKUPFILES classInit");
+    boolean e = Cache.getDefault(ENABLED, !Platform.isJS());
+    setEnabled(e);
+    Console.trace("BACKUPFILES " + (e ? "enabled" : "disabled"));
     BackupFilesPresetEntry bfpe = BackupFilesPresetEntry
             .getSavedBackupEntry();
+    Console.trace("BACKUPFILES preset scheme " + bfpe.toString());
     setConfirmDelete(bfpe.confirmDelete);
+    Console.trace("BACKUPFILES confirm delete " + bfpe.confirmDelete);
   }
 
   public static void setEnabled(boolean flag)
@@ -203,9 +267,9 @@ public class BackupFiles
       path = this.getTempFile().getCanonicalPath();
     } catch (IOException e)
     {
-      System.out.println(
-              "IOException when getting Canonical Path of temp file '"
-                      + this.getTempFile().getName() + "'");
+      Console.error("IOException when getting Canonical Path of temp file '"
+              + this.getTempFile().getName() + "'");
+      Console.debug(Cache.getStackTraceString(e));
     }
     return path;
   }
@@ -241,24 +305,34 @@ public class BackupFiles
             || suffix.length() == 0)
     {
       // nothing to do
+      Console.debug("BACKUPFILES rollBackupFiles nothing to do." + ", "
+              + "filename: " + (file != null ? file.getName() : "null")
+              + ", " + "file exists: " + file.exists() + ", " + "enabled: "
+              + enabled + ", " + "max: " + max + ", " + "suffix: '" + suffix
+              + "'");
       return true;
     }
 
+    Console.trace("BACKUPFILES rollBackupFiles starting");
+
     String dir = "";
     File dirFile;
     try
     {
       dirFile = file.getParentFile();
       dir = dirFile.getCanonicalPath();
+      Console.trace("BACKUPFILES dir: " + dir);
     } catch (Exception e)
     {
-      System.out.println(
-              "Could not get canonical path for file '" + file + "'");
+      Console.error("Could not get canonical path for file '" + file + "'");
+      Console.error(e.getMessage());
+      Console.debug(Cache.getStackTraceString(e));
       return false;
     }
     String filename = file.getName();
     String basename = filename;
 
+    Console.trace("BACKUPFILES filename is " + filename);
     boolean ret = true;
     // Create/move backups up one
 
@@ -270,9 +344,12 @@ public class BackupFiles
     File[] backupFiles = dirFile.listFiles(bff);
     int nextIndexNum = 0;
 
+    Console.trace("BACKUPFILES backupFiles.length: " + backupFiles.length);
     if (backupFiles.length == 0)
     {
       // No other backup files. Just need to move existing file to backupfile_1
+      Console.trace(
+              "BACKUPFILES no existing backup files, setting index to 1");
       nextIndexNum = 1;
     }
     else
@@ -285,6 +362,7 @@ public class BackupFiles
       if (reverseOrder)
       {
         // backup style numbering
+        Console.trace("BACKUPFILES rolling files in reverse order");
 
         int tempMax = noMax ? -1 : max;
         // noMax == true means no limits
@@ -316,6 +394,7 @@ public class BackupFiles
             // no "oldest" file to delete
             previousFile = backupfile_n;
             fileToBeDeleted = null;
+            Console.trace("BACKUPFILES No oldest file to delete");
             continue;
           }
 
@@ -326,6 +405,10 @@ public class BackupFiles
             File replacementFile = backupfile_n;
             long fileToBeDeletedLMT = fileToBeDeleted.lastModified();
             long replacementFileLMT = replacementFile.lastModified();
+            Console.trace("BACKUPFILES fileToBeDeleted is "
+                    + fileToBeDeleted.getAbsolutePath());
+            Console.trace("BACKUPFILES replacementFile is "
+                    + backupfile_n.getAbsolutePath());
 
             try
             {
@@ -338,7 +421,7 @@ public class BackupFiles
                         .format(fileToBeDeletedLMT);
                 String replacementFileLMTString = sdf
                         .format(replacementFileLMT);
-                System.out.println("WARNING! I am set to delete backupfile "
+                Console.warn("WARNING! I am set to delete backupfile "
                         + fileToBeDeleted.getName()
                         + " has modification time "
                         + fileToBeDeletedLMTString
@@ -349,6 +432,11 @@ public class BackupFiles
 
                 boolean delete = confirmNewerDeleteFile(fileToBeDeleted,
                         replacementFile, true);
+                Console.trace("BACKUPFILES "
+                        + (delete ? "confirmed" : "not") + " deleting file "
+                        + fileToBeDeleted.getAbsolutePath()
+                        + " which is newer than "
+                        + replacementFile.getAbsolutePath());
 
                 if (delete)
                 {
@@ -357,21 +445,27 @@ public class BackupFiles
                 }
                 else
                 {
+                  Console.debug("BACKUPFILES moving "
+                          + fileToBeDeleted.getAbsolutePath() + " to "
+                          + oldestTempFile.getAbsolutePath());
                   moveFileToFile(fileToBeDeleted, oldestTempFile);
                 }
               }
               else
               {
+                Console.debug("BACKUPFILES going to move "
+                        + fileToBeDeleted.getAbsolutePath() + " to "
+                        + oldestTempFile.getAbsolutePath());
                 moveFileToFile(fileToBeDeleted, oldestTempFile);
                 addDeleteFile(oldestTempFile);
               }
 
             } catch (Exception e)
             {
-              System.out.println(
+              Console.error(
                       "Error occurred, probably making new temp file for '"
                               + fileToBeDeleted.getName() + "'");
-              e.printStackTrace();
+              Console.error(Cache.getStackTraceString(e));
             }
 
             // reset
@@ -386,7 +480,9 @@ public class BackupFiles
           {
             if (previousFile != null)
             {
-              ret = ret && moveFileToFile(backupfile_n, previousFile);
+              // using boolean '&' instead of '&&' as don't want moveFileToFile
+              // attempt to be conditional (short-circuit)
+              ret = ret & moveFileToFile(backupfile_n, previousFile);
             }
           }
 
@@ -396,19 +492,37 @@ public class BackupFiles
         // index to use for the latest backup
         nextIndexNum = 1;
       }
-      else
+      else // not reverse numbering
       {
         // version style numbering (with earliest file deletion if max files
         // reached)
 
         bfTreeMap.values().toArray(backupFiles);
+        StringBuilder bfsb = new StringBuilder();
+        for (int i = 0; i < backupFiles.length; i++)
+        {
+          if (bfsb.length() > 0)
+          {
+            bfsb.append(", ");
+          }
+          bfsb.append(backupFiles[i].getName());
+        }
+        Console.trace("BACKUPFILES backupFiles: " + bfsb.toString());
 
         // noMax == true means keep all backup files
         if ((!noMax) && bfTreeMap.size() >= max)
         {
+          Console.trace("BACKUPFILES noMax: " + noMax + ", " + "max: " + max
+                  + ", " + "bfTreeMap.size(): " + bfTreeMap.size());
           // need to delete some files to keep number of backups to designated
-          // max
-          int numToDelete = bfTreeMap.size() - max + 1;
+          // max.
+          // Note that if the suffix is not numbered then do not delete any
+          // backup files later or we'll delete the new backup file (there can
+          // be only one).
+          int numToDelete = suffix.indexOf(NUM_PLACEHOLDER) > -1
+                  ? bfTreeMap.size() - max + 1
+                  : 0;
+          Console.trace("BACKUPFILES numToDelete: " + numToDelete);
           // the "replacement" file is the latest backup file being kept (it's
           // not replacing though)
           File replacementFile = numToDelete < backupFiles.length
@@ -421,6 +535,9 @@ public class BackupFiles
             File fileToBeDeleted = backupFiles[i];
             boolean delete = true;
 
+            Console.trace(
+                    "BACKUPFILES fileToBeDeleted: " + fileToBeDeleted);
+
             boolean newer = false;
             if (replacementFile != null)
             {
@@ -435,14 +552,13 @@ public class BackupFiles
                 String replacementFileLMTString = sdf
                         .format(replacementFileLMT);
 
-                System.out
-                        .println("WARNING! I am set to delete backupfile '"
-                                + fileToBeDeleted.getName()
-                                + "' has modification time "
+                Console.warn("WARNING! I am set to delete backupfile '"
+                        + fileToBeDeleted.getName()
+                        + "' has modification time "
                         + fileToBeDeletedLMTString
-                                + " which is newer than the oldest backupfile being kept '"
+                        + " which is newer than the oldest backupfile being kept '"
                         + replacementFile.getName()
-                                + "' with modification time "
+                        + "' with modification time "
                         + replacementFileLMTString);
 
                 delete = confirmNewerDeleteFile(fileToBeDeleted,
@@ -451,17 +567,23 @@ public class BackupFiles
                 {
                   // User has confirmed delete -- no need to add it to the list
                   fileToBeDeleted.delete();
+                  Console.debug("BACKUPFILES deleting fileToBeDeleted: "
+                          + fileToBeDeleted);
                   delete = false;
                 }
                 else
                 {
                   // keeping file, nothing to do!
+                  Console.debug("BACKUPFILES keeping fileToBeDeleted: "
+                          + fileToBeDeleted);
                 }
               }
             }
             if (delete)
             {
               addDeleteFile(fileToBeDeleted);
+              Console.debug("BACKUPFILES addDeleteFile(fileToBeDeleted): "
+                      + fileToBeDeleted);
             }
 
           }
@@ -476,10 +598,17 @@ public class BackupFiles
     String latestBackupFilename = dir + File.separatorChar
             + BackupFilenameParts.getBackupFilename(nextIndexNum, basename,
                     suffix, digits);
-    ret |= moveFileToFile(file, new File(latestBackupFilename));
-
+    Console.trace("BACKUPFILES Moving old file [" + file
+            + "] to latestBackupFilename [" + latestBackupFilename + "]");
+    // using boolean '&' instead of '&&' as don't want moveFileToFile attempt to
+    // be conditional (short-circuit)
+    ret = ret & moveFileToFile(file, new File(latestBackupFilename));
+    Console.debug(
+            "BACKUPFILES moving " + file + " to " + latestBackupFilename
+                    + " was " + (ret ? "" : "NOT ") + "successful");
     if (tidyUp)
     {
+      Console.debug("BACKUPFILES tidying up files");
       tidyUpFiles();
     }
 
@@ -535,7 +664,7 @@ public class BackupFiles
         saveFile = nextTempFile(ftbd.getName(), ftbd.getParentFile());
       } catch (Exception e)
       {
-        System.out.println(
+        Console.error(
                 "Error when confirming to keep backup file newer than other backup files.");
         e.printStackTrace();
       }
@@ -543,19 +672,27 @@ public class BackupFiles
               "label.newerdelete_replacement_line", new String[]
               { ftbd.getName(), rf.getName(), ftbdLMT, rfLMT, ftbdSize,
                   rfSize }));
+      // "Backup file\n''{0}''\t(modified {2}, size {4})\nis to be deleted and
+      // replaced by apparently older file \n''{1}''\t(modified {3}, size
+      // {5}).""
       messageSB.append("\n\n");
       messageSB.append(MessageManager.formatMessage(
               "label.confirm_deletion_or_rename", new String[]
               { ftbd.getName(), saveFile.getName() }));
+      // "Confirm deletion of ''{0}'' or rename to ''{1}''?"
       String[] options = new String[] {
           MessageManager.getString("label.delete"),
           MessageManager.getString("label.rename") };
 
-      confirmButton = JvOptionPane.showOptionDialog(Desktop.desktop,
-              messageSB.toString(),
-              MessageManager.getString("label.backupfiles_confirm_delete"),
-              JvOptionPane.YES_NO_OPTION, JvOptionPane.WARNING_MESSAGE,
-              null, options, options[0]);
+      confirmButton = Platform.isHeadless() ? JvOptionPane.YES_OPTION
+              : JvOptionPane.showOptionDialog(Desktop.desktop,
+                      messageSB.toString(),
+                      MessageManager.getString(
+                              "label.backupfiles_confirm_delete"),
+                      // "Confirm delete"
+                      JvOptionPane.YES_NO_OPTION,
+                      JvOptionPane.WARNING_MESSAGE, null, options,
+                      options[0]);
     }
     else
     {
@@ -563,19 +700,27 @@ public class BackupFiles
               .formatMessage("label.newerdelete_line", new String[]
               { ftbd.getName(), rf.getName(), ftbdLMT, rfLMT, ftbdSize,
                   rfSize }));
+      // "Backup file\n''{0}''\t(modified {2}, size {4})\nis to be deleted but
+      // is newer than the oldest remaining backup file \n''{1}''\t(modified
+      // {3}, size {5})."
       messageSB.append("\n\n");
       messageSB.append(MessageManager
               .formatMessage("label.confirm_deletion", new String[]
               { ftbd.getName() }));
+      // "Confirm deletion of ''{0}''?"
       String[] options = new String[] {
           MessageManager.getString("label.delete"),
           MessageManager.getString("label.keep") };
 
-      confirmButton = JvOptionPane.showOptionDialog(Desktop.desktop,
-              messageSB.toString(),
-              MessageManager.getString("label.backupfiles_confirm_delete"),
-              JvOptionPane.YES_NO_OPTION, JvOptionPane.WARNING_MESSAGE,
-              null, options, options[0]);
+      confirmButton = Platform.isHeadless() ? JvOptionPane.YES_OPTION
+              : JvOptionPane.showOptionDialog(Desktop.desktop,
+                      messageSB.toString(),
+                      MessageManager.getString(
+                              "label.backupfiles_confirm_delete"),
+                      // "Confirm delete"
+                      JvOptionPane.YES_NO_OPTION,
+                      JvOptionPane.WARNING_MESSAGE, null, options,
+                      options[0]);
     }
 
     // return should be TRUE if file is to be deleted
@@ -593,6 +738,8 @@ public class BackupFiles
         messageSB = new StringBuilder();
         messageSB.append(MessageManager
                 .getString("label.backupfiles_confirm_delete_old_files"));
+        // "Delete the following older backup files? (see the Backups tab in
+        // Preferences for more options)"
         for (int i = 0; i < deleteFiles.size(); i++)
         {
           File df = deleteFiles.get(i);
@@ -603,13 +750,17 @@ public class BackupFiles
                   new String[]
                   { sdf.format(df.lastModified()),
                       Long.toString(df.length()) }));
+          // "(modified {0}, size {1})"
         }
 
-        int confirmButton = JvOptionPane.showConfirmDialog(Desktop.desktop,
-                messageSB.toString(),
-                MessageManager
-                        .getString("label.backupfiles_confirm_delete"),
-                JvOptionPane.YES_NO_OPTION, JvOptionPane.WARNING_MESSAGE);
+        int confirmButton = Platform.isHeadless() ? JvOptionPane.YES_OPTION
+                : JvOptionPane.showConfirmDialog(Desktop.desktop,
+                        messageSB.toString(),
+                        MessageManager.getString(
+                                "label.backupfiles_confirm_delete"),
+                        // "Confirm delete"
+                        JvOptionPane.YES_NO_OPTION,
+                        JvOptionPane.WARNING_MESSAGE);
 
         doDelete = (confirmButton == JvOptionPane.YES_OPTION);
       }
@@ -623,8 +774,10 @@ public class BackupFiles
         for (int i = 0; i < deleteFiles.size(); i++)
         {
           File fileToDelete = deleteFiles.get(i);
+          Console.trace("BACKUPFILES about to delete fileToDelete:"
+                  + fileToDelete);
           fileToDelete.delete();
-          System.out.println("DELETING '" + fileToDelete.getName() + "'");
+          Console.warn("deleted '" + fileToDelete.getName() + "'");
         }
       }
 
@@ -659,7 +812,7 @@ public class BackupFiles
     boolean rename = false;
     if (write)
     {
-      roll = this.rollBackupFiles(false);
+      roll = this.rollBackupFiles(false); // tidyUpFiles at the end
       rename = this.renameTempFile();
     }
 
@@ -675,6 +828,7 @@ public class BackupFiles
       StringBuilder messageSB = new StringBuilder();
       messageSB.append(MessageManager.getString(
               "label.backupfiles_confirm_save_file_backupfiles_roll_wrong"));
+      // "Something possibly went wrong with the backups of this file."
       if (rename)
       {
         if (messageSB.length() > 0)
@@ -683,6 +837,7 @@ public class BackupFiles
         }
         messageSB.append(MessageManager.getString(
                 "label.backupfiles_confirm_save_new_saved_file_ok"));
+        // "The new saved file seems okay."
       }
       else
       {
@@ -692,13 +847,22 @@ public class BackupFiles
         }
         messageSB.append(MessageManager.getString(
                 "label.backupfiles_confirm_save_new_saved_file_not_ok"));
+        // "The new saved file might not be okay."
       }
-
-      int confirmButton = JvOptionPane.showConfirmDialog(Desktop.desktop,
-              messageSB.toString(),
-              MessageManager
-                      .getString("label.backupfiles_confirm_save_file"),
-              JvOptionPane.OK_OPTION, JvOptionPane.WARNING_MESSAGE);
+      if (messageSB.length() > 0)
+      {
+        messageSB.append("\n");
+      }
+      messageSB
+              .append(MessageManager.getString("label.continue_operation"));
+
+      int confirmButton = Platform.isHeadless() ? JvOptionPane.OK_OPTION
+              : JvOptionPane.showConfirmDialog(Desktop.desktop,
+                      messageSB.toString(),
+                      MessageManager.getString(
+                              "label.backupfiles_confirm_save_file"),
+                      // "Confirm save file"
+                      JvOptionPane.OK_OPTION, JvOptionPane.WARNING_MESSAGE);
       okay = confirmButton == JvOptionPane.OK_OPTION;
     }
     if (okay)
@@ -706,6 +870,9 @@ public class BackupFiles
       tidyUpFiles();
     }
 
+    // remove this file from the save in progress stack
+    removeSaveInProgress();
+
     return rename;
   }
 
@@ -722,8 +889,7 @@ public class BackupFiles
       dirFile = file.getParentFile();
     } catch (Exception e)
     {
-      System.out.println(
-              "Could not get canonical path for file '" + file + "'");
+      Console.error("Could not get canonical path for file '" + file + "'");
       return new TreeMap<>();
     }
 
@@ -764,28 +930,52 @@ public class BackupFiles
     int pos = deleteFiles.indexOf(fileToBeDeleted);
     if (pos > -1)
     {
+      Console.debug("BACKUPFILES not adding file "
+              + fileToBeDeleted.getAbsolutePath()
+              + " to the delete list (already at index" + pos + ")");
       return true;
     }
     else
     {
+      Console.debug("BACKUPFILES adding file "
+              + fileToBeDeleted.getAbsolutePath() + " to the delete list");
       deleteFiles.add(fileToBeDeleted);
     }
     return ret;
   }
 
+  public File getFile()
+  {
+    return file;
+  }
+
   public static boolean moveFileToFile(File oldFile, File newFile)
   {
+    Console.initLogger();
     boolean ret = false;
     Path oldPath = Paths.get(oldFile.getAbsolutePath());
     Path newPath = Paths.get(newFile.getAbsolutePath());
     try
     {
+      // delete destination file - not usually necessary but Just In Case...
+      Console.trace("BACKUPFILES deleting " + newFile.getAbsolutePath());
+      newFile.delete();
+      Console.trace("BACKUPFILES moving " + oldFile.getAbsolutePath()
+              + " to " + newFile.getAbsolutePath());
       Files.move(oldPath, newPath, StandardCopyOption.REPLACE_EXISTING);
       ret = true;
+      Console.trace("BACKUPFILES move seems to have succeeded");
     } catch (IOException e)
     {
-      Cache.log.warn("Could not move file '" + oldPath.toString() + "' to '"
+      Console.warn("Could not move file '" + oldPath.toString() + "' to '"
               + newPath.toString() + "'");
+      Console.error(e.getMessage());
+      Console.debug(Cache.getStackTraceString(e));
+      ret = false;
+    } catch (Exception e)
+    {
+      Console.error(e.getMessage());
+      Console.debug(Cache.getStackTraceString(e));
       ret = false;
     }
     return ret;