Add a setting for reset button (@jsayles)

jsignature/settings.py

@@ -14,6 +14,8 @@ JSIGNATURE_LINE_WIDTH = getattr(
     settings, 'JSIGNATURE_LINE_WIDTH', 0)
 JSIGNATURE_UNDO_BUTTON = getattr(
     settings, 'JSIGNATURE_UNDO_BUTTON', False)
+JSIGNATURE_RESET_BUTTON = getattr(
+    settings, 'JSIGNATURE_RESET_BUTTON', True)
 
 JSIGNATURE_DEFAULT_CONFIG = {
     'width': JSIGNATURE_WIDTH,
@@ -23,4 +25,5 @@ JSIGNATURE_DEFAULT_CONFIG = {
     'decor-color': JSIGNATURE_DECOR_COLOR,
     'lineWidth': JSIGNATURE_LINE_WIDTH,
     'UndoButton': JSIGNATURE_UNDO_BUTTON,
+    'ResetButton': JSIGNATURE_RESET_BUTTON,
 }

jsignature/templates/jsignature/widget.html

@@ -1,8 +1,10 @@
 <div class='jsign-wrapper'>
   {{ hidden }}
   <div id='{{ jsign_id }}'
-       data-config='{{ config }}'
+       data-config='{{ js_config }}'
        data-initial-value='{{ value }}'
        class='jsign-container'></div>
-  <input type='button' value='{{ reset_btn_text }}' class="btn">
+  {% if config.ResetButton %}
+    <input type='button' value='{{ reset_btn_text }}' class="btn">
+  {% endif %}
 </div>

jsignature/tests/widgets.py

@@ -63,3 +63,12 @@ class JSignatureWidgetTest(SimpleTestCase):
         # Almost useless :/
         self.assertEqual(1, len(pq('.jsign-wrapper', output)))
         self.assertEqual(1, len(pq('[type=hidden]', output)))
+
+    def test_render_reset_button(self):
+        w = JSignatureWidget(jsignature_attrs={'ResetButton': True})
+        output = w.render(name='foo', value=None)
+        self.assertEqual(1, len(pq('[type=button]', output)))
+
+        w = JSignatureWidget(jsignature_attrs={'ResetButton': False})
+        output = w.render(name='foo', value=None)
+        self.assertEqual(0, len(pq('[type=button]', output)))

jsignature/widgets.py

@@ -71,7 +71,8 @@ class JSignatureWidget(HiddenInput):
             'hidden': super(JSignatureWidget, self).render(name, value, attrs),
             'jsign_id': jsign_id,
             'reset_btn_text': _('Reset'),
-            'config': mark_safe(json.dumps(jsignature_config)),
+            'config': jsignature_config,
+            'js_config': mark_safe(json.dumps(jsignature_config)),
             'value': mark_safe(value),
         }
         out = render_to_string('jsignature/widget.html', context)