load prev save if found

pdex/src/processing/mode/experimental/AutoSaveUtil.java

@@ -17,7 +17,7 @@ public class AutoSaveUtil {
   
   private int saveTime;
   
-  private File autosaveDir;
+  private File autosaveDir, pastSave;
   
   private boolean isSaving;
   /**
@@ -37,6 +37,21 @@ public class AutoSaveUtil {
     autosaveDir = new File(editor.getSketch().getFolder().getAbsolutePath() + File.separator + "_autosave");
   }
   
+  public boolean checkForPastSave(){
+    if(autosaveDir.exists()){
+      String prevSaves[] = Base.listFiles(autosaveDir, false);
+      if(prevSaves.length > 0){
+       pastSave = new File(prevSaves[0]);
+       return true;
+      }
+    }
+    return false;
+  }
+  
+  public File getPastSave(){
+    return pastSave;
+  }
+  
   public void init(){
     if(saveTime < 1000) return;
     saveTime = 10 * 1000;

pdex/src/processing/mode/experimental/DebugEditor.java

@@ -246,8 +246,7 @@ public class DebugEditor extends JavaEditor implements ActionListener {
         addXQModeUI();    
         debugToolbarEnabled = new AtomicBoolean(false);
         log("Sketch Path: " + path);
-        autosaver = new AutoSaveUtil(this, 5);
-        autosaver.init();
+        loadAutoSaver();        
     }
     
     private void addXQModeUI(){
@@ -870,6 +869,25 @@ public class DebugEditor extends JavaEditor implements ActionListener {
         }
         return saved;
     }
+    
+    public void loadAutoSaver(){
+      autosaver = new AutoSaveUtil(this, 5);
+      if(!autosaver.checkForPastSave()) {
+        autosaver.init();
+        return;
+      }
+      
+      File pastSave = autosaver.getPastSave();
+      int response = Base.showYesNoQuestion(this, "Unsaved backup found!", "An automatic backup of this " +
+      		"sketch has been found. This may mean Processing quit unexpectedly last time.", 
+      		"Select YES to view it or NO to delete the backup.");
+      if(response == JOptionPane.YES_OPTION){
+        handleOpenInternal(pastSave.getAbsolutePath());
+      }
+      else{
+        autosaver.init();
+      }
+    }
 
     /**
      * Set text contents of a specific tab. Updates underlying document and text