Added code to permanently delete project documents

nw/project/document.py

@@ -59,7 +59,7 @@ class NWDoc():
         if self.theItem.parHandle == self.theProject.trashRoot:
             self.docEditable = False
 
-        docDir, docFile = self._assemblePath(self.FILE_MN)
+        docDir, docFile = self.assemblePath(self.docHandle, self.FILE_MN)
         self.fileLoc = path.join(docDir,docFile)
         logger.debug("Opening document %s" % self.fileLoc)
         dataDir = path.join(self.theProject.projPath, docDir)
@@ -92,7 +92,7 @@ class NWDoc():
         if self.docHandle is None or not self.docEditable:
             return False
 
-        docDir, docFile = self._assemblePath(self.FILE_MN)
+        docDir, docFile = self.assemblePath(self.docHandle, self.FILE_MN)
         logger.debug("Saving document %s" % path.join(docDir,docFile))
         dataPath = path.join(self.theProject.projPath, docDir)
         docPath  = path.join(dataPath, docFile)
@@ -124,15 +124,32 @@ class NWDoc():
 
         return True
 
-    ##
-    #  Internal Functions
-    ##
+    def deleteDocument(self, tHandle):
+        """Permanently delete a document source file and its backups
+        from the project data folder.
+        """
+        docDir, docFile = self.assemblePath(tHandle, self.FILE_MN)
+        dataPath = path.join(self.theProject.projPath, docDir)
+        chkList = []
+        chkList.append(path.join(dataPath, docFile))
+        chkList.append(path.join(dataPath,docFile[:-3]+"tmp"))
+        chkList.append(path.join(dataPath,docFile[:-3]+"bak"))
+        for chkFile in chkList:
+            if path.isfile(chkFile):
+                try:
+                    unlink(chkFile)
+                    logger.debug("Deleted: %s" % chkFile)
+                except Exception as e:
+                    self.makeAlert(["Could not delete document file.",str(e)], nwAlert.ERROR)
+                    return False
+        return True
 
-    def _assemblePath(self, docExt):
-        if self.docHandle is None:
+    @staticmethod
+    def assemblePath(tHandle, docExt):
+        if tHandle is None:
             return None
-        docDir  = "data_"+self.docHandle[0]
-        docFile = self.docHandle[1:13]+"_"+docExt
+        docDir  = "data_"+tHandle[0]
+        docFile = tHandle[1:13]+"_"+docExt
         return docDir, docFile
 
 # END Class NWDoc