Overview map hotfix (#451)

* overview map control

* add "set" template tag

* set template tag tests

tests/unit_tests/test_tethys_gizmos/test_templatetags/test_tethys_gizmos.py

@@ -70,6 +70,33 @@ def test_HighchartsDateEncoder_no_dt(self):
         # Check Result
         self.assertEqual('2018-01-01', result)
 
+    def test_SetVarNode_template_error(self):
+        node = gizmos_templatetags.SetVarNode('test', 'test')
+        result = node.render({})
+        self.assertEqual('', result)
+
+    @mock.patch('tethys_gizmos.templatetags.tethys_gizmos.template.Variable')
+    def test_SetVarNode_render(self, mock_template_var):
+        mock_Variable = mock.MagicMock()
+        mock_Variable.resolve.return_value = 'foo'
+        mock_template_var.return_value = mock_Variable
+        context = {'test1': {}}
+        node = gizmos_templatetags.SetVarNode('test1.test', 'test')
+        result = node.render(context)
+        self.assertDictEqual(context, {'test1': {'test': 'foo'}})
+
+        self.assertEqual('', result)
+
+    @mock.patch('tethys_gizmos.templatetags.tethys_gizmos.SetVarNode')
+    def test_set_var(self, _):
+        token = mock.MagicMock()
+        token.split_contents.return_value = ['set', 'test', '=', 'tests']
+        gizmos_templatetags.set_var(None, token)
+
+    def test_set_var_error(self):
+        token = mock.MagicMock()
+        self.assertRaises(TemplateSyntaxError, gizmos_templatetags.set_var, None, token)
+
     def test_isstring(self):
         result = gizmos_templatetags.isstring(type('string'))
 

tethys_gizmos/static/tethys_gizmos/js/tethys_map_view.js

@@ -323,7 +323,8 @@ var TETHYS_MAP_VIEW = (function() {
         ZOOM_EXTENT = 'ZoomToExtent',
         FULL_SCREEN = 'FullScreen',
         MOUSE_POSITION = 'MousePosition',
-        SCALE_LINE = 'ScaleLine';
+        SCALE_LINE = 'ScaleLine',
+        OVERVIEW_MAP = 'OverviewMap';
 
     var controls;
 
@@ -356,6 +357,9 @@ var TETHYS_MAP_VIEW = (function() {
           else if (current_control === SCALE_LINE) {
             m_map.addControl(new ol.control.ScaleLine());
           }
+          else if (current_control === OVERVIEW_MAP) {
+            m_map.addControl(new ol.control.OverviewMap());
+          }
 
         // Handle object case
         } else if (typeof current_control === 'object') {
@@ -374,6 +378,9 @@ var TETHYS_MAP_VIEW = (function() {
           else if (SCALE_LINE in current_control){
             m_map.addControl(new ol.control.ScaleLine(current_control[SCALE_LINE]));
           }
+          else if (OVERVIEW_MAP in current_control){
+            m_map.addControl(new ol.control.OverviewMap(current_control[OVERVIEW_MAP]));
+          }
           else if (ZOOM_EXTENT in current_control){
             var control_obj = current_control[ZOOM_EXTENT];
 

tethys_gizmos/templatetags/tethys_gizmos.py

@@ -77,6 +77,39 @@ def default(self, obj):
         return super(HighchartsDateEncoder, self).default(obj)
 
 
+class SetVarNode(template.Node):
+
+    def __init__(self, var_name, var_value):
+        self.var_names = var_name.split('.')
+        self.var_name = self.var_names.pop()
+        self.var_value = var_value
+
+    def render(self, context):
+        try:
+            value = template.Variable(self.var_value).resolve(context)
+        except template.VariableDoesNotExist:
+            value = ''
+
+        for name in self.var_names:
+            context = context[name]
+
+        context[self.var_name] = value
+
+        return ''
+
+
+@register.tag(name='set')
+def set_var(parser, token):
+    """
+    {% set some_var = '123' %}
+    """
+    parts = token.split_contents()
+    if len(parts) < 4:
+        raise template.TemplateSyntaxError("'set' tag must be of the form: {% set <var_name> = <var_value> %}")
+
+    return SetVarNode(parts[1], parts[3])
+
+
 @register.filter(is_safe=True)
 def isstring(value):
     """