Enabled automatic extraction of comments from lrf files when a new book is added.

Fixed rendering of book info in library view. 
Fixed clicking on first item in list would not show book info. 
Version bump.

src/libprs500/__init__.py

@@ -37,6 +37,6 @@ the following rule in C{/etc/udev/rules.d/90-local.rules} ::
 You may have to adjust the GROUP and the location of the rules file to 
 suit your distribution.
 """
-__version__   = "0.3.0b2"
+__version__   = "0.3.0b3"
 __docformat__ = "epytext"
 __author__    = "Kovid Goyal <kovid@kovidgoyal.net>"

src/libprs500/gui/database.py

@@ -57,6 +57,7 @@ class LibraryDatabase(object):
         title, author, publisher, size, cover = os.path.basename(_file), \
                                        None, None, os.stat(_file)[ST_SIZE], None
         ext = title[title.rfind(".")+1:].lower() if title.find(".") > -1 else None
+        comments = None
         if ext == "lrf":
             lrf = LRFMetaFile(open(_file, "r+b"))
             title, author, cover, publisher = lrf.title, lrf.author.strip(), \
@@ -65,6 +66,9 @@ class LibraryDatabase(object):
                 publisher = None
             if "unknown" in author.lower(): 
                 author = None
+            comments = lrf.free_text
+            if not comments:
+                comments = None
         data = open(_file).read()
         usize = len(data)
         data = compress(data)
@@ -75,7 +79,7 @@ class LibraryDatabase(object):
         self.con.execute("insert into books_meta (title, authors, publisher, "+\
                          "size, tags, comments, rating) values "+\
                          "(?,?,?,?,?,?,?)", \
-                         (title, author, publisher, size, None, None, None))
+                         (title, author, publisher, size, None, comments, None))
         _id =  self.con.execute("select max(id) from books_meta").next()[0]    
         self.con.execute("insert into books_data values (?,?,?,?)", \
                             (_id, ext, usize, sqlite.Binary(data)))
@@ -163,6 +167,9 @@ class LibraryDatabase(object):
                 lrf = LRFMetaFile(s)
                 lrf.author = metadata["authors"]
                 lrf.title = metadata["title"]
+                # Not sure if I want to override the lrf freetext field
+                # with a possibly null value
+                #lrf.free_text = metadata["comments"]
             except LRFException:
                 pass
             data = s.getvalue()
@@ -201,7 +208,7 @@ class LibraryDatabase(object):
             return None
         data = {}
         for field in ("id", "title", "authors", "publisher", "size", "tags",
-                      "date"):
+                      "date", "comments"):
             data[field] = row[field]
         return data
     

src/libprs500/gui/main.py

@@ -38,10 +38,7 @@ from editbook import EditBookDialog
 
 
 DEFAULT_BOOK_COVER = None
-LIBRARY_BOOK_TEMPLATE = QString("<table><tr><td><b>Formats:</b> %1  \
-                                 </td><td><b>Tags:</b> %2</td></tr> \
-                                 <tr><td colspan='2'><b>Comments:</b> %3</td>\
-                                 </tr></table>")
+LIBRARY_BOOK_TEMPLATE = QString("<b>Formats:</b> %1<br><b>Tags:</b> %2<br>%3") 
 DEVICE_BOOK_TEMPLATE = QString("<table><tr><td><b>Title: </b>%1</td><td> \
                                 <b>&nbsp;Size:</b> %2</td></tr>\
                                 <tr><td><b>Author: </b>%3</td>\
@@ -124,12 +121,13 @@ class Main(QObject, Ui_MainWindow):
         for r in range(topleft.row(), bottomright.row()+1):
             self.current_view.resizeRowToContents(r)
     
-    def show_book(self, current, previous):    
-        if not len(self.current_view.selectedIndexes()):
+    def show_book(self, current, previous):
+        if not current.isValid():
             return
         if self.library_view.isVisible():
             formats, tags, comments, cover = self.library_model\
                                                         .info(current.row())
+            comments = re.sub('\n', '<br>', comments)
             data = LIBRARY_BOOK_TEMPLATE.arg(formats).arg(tags).arg(comments)
             tooltip = "To save the cover, drag it to the desktop.<br>To \
                        change the cover drag the new cover onto this picture"
@@ -488,7 +486,7 @@ class Main(QObject, Ui_MainWindow):
         self.df.setText(self.df_template.arg("").arg("").arg(""))
         window.show()
         self.library_view.resizeColumnsToContents()
-        self.library_view.resizeRowsToContents()        
+        self.library_view.resizeRowsToContents()
         
     
     def device_removed(self):

src/libprs500/gui/widgets.py

@@ -526,7 +526,9 @@ class LibraryBooksModel(QAbstractTableModel):
         tags = row["tags"]
         if not tags: tags = ""
         comments = row["comments"]
-        if not comments: comments = ""
+        if not comments: 
+            comments = ""
+        comments = TableView.wrap(comments, width=80)
         return exts, tags, comments, cover
     
     def id_from_index(self, index): return self._data[index.row()]["id"]

src/libprs500/lrf/meta.py

@@ -114,6 +114,8 @@ class xml_field(object):
         return ""
         
     def __set__(self, obj, val):
+        if val == None:
+            val = ""
         document = dom.parseString(obj.info)
         def create_elem():
             elem = document.createElement(self.tag_name)