Added an else box to the tag color wizard. Also added more extensive tooltips.

src/calibre/gui2/dialogs/template_line_editor.py

@@ -69,10 +69,38 @@ class TagWizard(QDialog):
         self.setLayout(l)
         l.setColumnStretch(0, 1)
         l.setColumnMinimumWidth(0, 300)
-        l.addWidget(QLabel(_('Tags (more than one per box permitted)')), 0, 0, 1, 1)
+        h = QLabel(_('Tags (see the popup help for more information)'))
-        l.addWidget(QLabel(_('Color')), 0, 1, 1, 1)
+        h.setToolTip('<p>' +
+             _('You can enter more than one tag per box, separated by commas. '
+               'The comparison ignores letter case.<br>'
+               'A tag value can be a regular expression. '
+               'When using regular expressions, note that the wizard '
+               'puts anchors (^ and $) around the expression, so you '
+               'must ensure your expression matches from the beginning '
+               'to the end of the tag.<br>'
+               'Regular expression examples:') + '<ul>' +
+             _('<li><code><b>.*</b></code> matches any tag. No empty tags are '
+               'checked, so you don\'t need to worry about empty strings</li>'
+               '<li><code><b>A.*</b></code> matches any tag beginning with A</li>'
+               '<li><code><b>.*mystery.*</b></code> matches any tag containing '
+               'the word "mystery"</li>') + '</ul></p>')
+        l.addWidget(h , 0, 0, 1, 1)
+        c = QLabel(_('Color if tag found'))
+        c.setToolTip('<p>' +
+             _('At least one of the two color boxes must have a value. Leave '
+               'one color box empty if you want the template to use the next '
+               'line in this wizard. If both boxes are filled in, the rest of '
+               'the lines in this wizard will be ignored.') + '</p>')
+        l.addWidget(c, 0, 1, 1, 1)
+        c = QLabel(_('Color if tag not found'))
+        c.setToolTip('<p>' +
+             _('This box is usually filled in only on the last test. If it is '
+               'filled in before the last test, then the color for tag found box '
+               'must be empty or all the rest of the tests will be ignored.') + '</p>')
+        l.addWidget(c, 0, 2, 1, 1)
         self.tagboxes = []
         self.colorboxes = []
+        self.nfcolorboxes = []
         self.colors = [unicode(s) for s in list(QColor.colorNames())]
         self.colors.insert(0, '')
         for i in range(0, 10):
@@ -85,15 +113,25 @@ class TagWizard(QDialog):
             cb.addItems(self.colors)
             self.colorboxes.append(cb)
             l.addWidget(cb, i+1, 1, 1, 1)
+            cb = QComboBox(self)
+            cb.addItems(self.colors)
+            self.nfcolorboxes.append(cb)
+            l.addWidget(cb, i+1, 2, 1, 1)
 
         if txt:
             lines = txt.split('\n')[3:]
             i = 0
             for line in lines:
                 if line.startswith('#'):
-                    t,c = line[1:].split(':|:')
+                    vals = line[1:].split(':|:')
+                    if len(vals) == 2:
+                        t, c = vals
+                        nc = ''
+                    else:
+                        t,c,nc = vals
                     try:
                         self.colorboxes[i].setCurrentIndex(self.colorboxes[i].findText(c))
+                        self.nfcolorboxes[i].setCurrentIndex(self.nfcolorboxes[i].findText(nc))
                         self.tagboxes[i].setText(t)
                     except:
                         pass
@@ -109,28 +147,35 @@ class TagWizard(QDialog):
         res = ("program:\n#tag wizard -- do not directly edit\n"
                "  t = field('tags');\n  first_non_empty(\n")
         lines = []
-        for tb, cb in zip(self.tagboxes, self.colorboxes):
+        for tb, cb, nfcb in zip(self.tagboxes, self.colorboxes, self.nfcolorboxes):
             tags = [t.strip() for t in unicode(tb.text()).split(',') if t.strip()]
             tags = '$|^'.join(tags)
             c = unicode(cb.currentText()).strip()
-            if not tags or not c:
+            nfc = unicode(nfcb.currentText()).strip()
+            if not tags or not (c or nfc):
                 continue
             if c not in self.colors:
                 error_dialog(self, _('Invalid color'),
                              _('The color {0} is not valid').format(c),
                              show=True, show_copy_button=False)
                 return False
-            lines.append("    in_list(t, ',', '^{0}$', '{1}', '')".format(tags, c))
+            if nfc not in self.colors:
+                error_dialog(self, _('Invalid color'),
+                             _('The color {0} is not valid').format(nfc),
+                             show=True, show_copy_button=False)
+                return False
+            lines.append("    in_list(t, ',', '^{0}$', '{1}', '{2}')".format(tags, c, nfc))
         res += ',\n'.join(lines)
         res += ')\n'
         self.template = res
         res = ''
-        for tb, cb in zip(self.tagboxes, self.colorboxes):
+        for tb, cb, nfcb in zip(self.tagboxes, self.colorboxes, self.nfcolorboxes):
             t = unicode(tb.text()).strip()
             if t.endswith(','):
                 t = t[:-1]
             c = unicode(cb.currentText()).strip()
+            nfc = unicode(nfcb.currentText()).strip()
             if t and c:
-                res += '#' + t + ':|:' + c  + '\n'
+                res += '#' + t + ':|:' + c  + ':|:' + nfc + '\n'
         self.template += res
         self.accept()