Package Manager add-on now functional, with limitations

- For now, add-ons are downloaded from http://localhost:8000/.
- Add-ons on the index.json (from	blender.org gitweb) are only displayed if they are not installed locally, or installed in the USER path.
- Only .py add-ons are supported for now, but .zip add-ons will be supported next commit.

package_manager/__init__.py

@@ -30,10 +30,18 @@ bl_info = {
 
 
 import bpy
+import addon_utils
 from bpy.types import Operator, AddonPreferences
 from bpy.props import StringProperty, BoolProperty, IntProperty, CollectionProperty
 
-from . import networking
+if "bpy" in locals():
+    import imp
+    try:
+        imp.reload(networking)
+    except NameError:
+        from . import networking
+else:
+    from . import networking
 
 class PackageManagerAddon(bpy.types.PropertyGroup):
     source = StringProperty()
@@ -49,6 +57,7 @@ class PackageManagerAddon(bpy.types.PropertyGroup):
     warning = StringProperty()
     support = StringProperty()
     filename = StringProperty()
+    module_name = StringProperty()
 
 class PackageManagerPreferences(AddonPreferences):
     # this must match the addon name, use '__package__'
@@ -56,15 +65,74 @@ class PackageManagerPreferences(AddonPreferences):
     bl_idname = __name__
     
     pm_addons = CollectionProperty(type=PackageManagerAddon)
-    
     pm_addons_index = IntProperty()
     
     def draw(self, context):
         layout = self.layout
         layout.operator("wm.update_index", text="Update List",  icon='FILE_REFRESH')
-        rows = 1 if len(self.pm_addons) == 0 else 6
+        rows = 1 if len(self.pm_addons) == 0 else 4
         layout.template_list("UI_UL_list", "addons_list", self, "pm_addons",
             self, "pm_addons_index", rows=rows)
+        
+        if len(self.pm_addons) == 0:
+            # No add-ons, return
+            return
+        
+        # Display selected add-on
+        addon = self.pm_addons[self.pm_addons_index]
+        
+        installed = False
+        for module in addon_utils.modules():
+            if module.__name__ == addon.module_name:
+                installed = True
+                break
+        
+        col_box = layout.column()
+        box = col_box.box()
+        colsub = box.column()
+        
+        split = colsub.row().split(percentage=0.25)
+        split.label(text="Installed: %s" % ("Yes" if installed else "No"))
+        split.separator()
+        split.separator()
+        split.operator("wm.addon_download_install",
+                        text="Install from Web",
+                        icon='URL').addon = addon.module_name
+        
+        if addon.description:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Description:")
+            split.label(text=addon.description)
+        if addon.location:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Location:")
+            split.label(text=addon.location)
+        if addon.author:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Author:")
+            split.label(text=addon.author, translate=False)
+        if addon.version:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Version:")
+            split.label(text=addon.version, translate=False)
+        if addon.warning:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Warning:")
+            split.label(text='  ' + addon.warning, icon='ERROR')
+
+        tot_row = bool(addon.wiki_url)
+
+        if tot_row:
+            split = colsub.row().split(percentage=0.15)
+            split.label(text="Internet:")
+            if addon.wiki_url:
+                split.operator("wm.url_open", text="Documentation", icon='HELP').url = addon.wiki_url
+            split.operator("wm.url_open", text="Report a Bug", icon='URL').url = addon.get(
+                    "tracker_url",
+                    "http://developer.blender.org/maniphest/task/create/?project=3&type=Bug")
+            
+            for i in range(4 - tot_row):
+                split.separator()
 
 def register():
     networking.register()