🚑 sometimes, PluginManager should have been declared before any plugin is declared

Author: chfw

pyexcel_pygal/__init__.py

@@ -7,10 +7,21 @@
     :copyright: (c) 2016-2017 by Onni Software Ltd.
     :license: New BSD License, see LICENSE for further details
 """
-from pyexcel.plugins import PyexcelPluginChain
+from lml.plugin import PluginInfoChain, PluginInfo
 
 
-PyexcelPluginChain(__name__).add_a_renderer(
-    relative_plugin_class_path='chart.ChartRenderer',
-    file_types=['svg']
+class MyPluginInfo(PluginInfo):
+
+    def tags(self):
+        file_types = self.file_types
+        for file_type in file_types:
+            yield file_type
+
+
+PluginInfoChain(__name__).add_a_plugin_instance(
+    MyPluginInfo(
+        'renderer',
+        '%s.chart.ChartRenderer' % __name__,
+        file_types=['svg']
+    )
 )

pyexcel_pygal/chart.py

@@ -32,6 +32,22 @@
     histogram='Histogram')
 
 
+class ChartManager(PluginManager):
+    def __init__(self):
+        PluginManager.__init__(self, 'chart')
+
+    def get_a_plugin(self, key, **keywords):
+        self._logger.debug("get a plugin called")
+        plugin = self.load_me_now(key)
+        return plugin(key)
+
+    def raise_exception(self, key):
+        raise Exception("No support for " + key)
+
+
+MANAGER = ChartManager()
+
+
 class Chart(object):
 
     def __init__(self, cls_name):
@@ -169,22 +185,6 @@ def _render_a_sheet(self, instance, sheet,
         instance.add(sheet.name, points)
 
 
-class ChartManager(PluginManager):
-    def __init__(self):
-        PluginManager.__init__(self, 'chart')
-
-    def get_a_plugin(self, key, **keywords):
-        self._logger.debug("get a plugin called")
-        plugin = self.load_me_now(key)
-        return plugin(key)
-
-    def raise_exception(self, key):
-        raise Exception("No support for " + key)
-
-
-MANAGER = ChartManager()
-
-
 class ChartRenderer(BinaryRenderer):
 
     def render_sheet(self, sheet, title=DEFAULT_TITLE,