Merge pull request #6080 from repsac/io_three

Added simple popups for error/info/warning dialogs

utils/exporters/blender/addons/io_three/__init__.py

@@ -41,7 +41,7 @@ SETTINGS_FILE_EXPORT = 'three_settings_export.js'
 bl_info = {
     'name': "Three.js Format",
     'author': "repsac, mrdoob, yomotsu, mpk, jpweeks",
-    'version': (1, 2, 2),
+    'version': (1, 2, 3),
     'blender': (2, 7, 3),
     'location': "File > Export",
     'description': "Export Three.js formatted JSON files.",
@@ -693,6 +693,7 @@ class ExportThree(bpy.types.Operator, ExportHelper):
             raise Exception("filename not set")
 
         settings = save_settings_export(self.properties)
+        settings['addon_version'] = bl_info['version']
 
         filepath = self.filepath
         if settings[constants.COMPRESSION] == constants.MSGPACK:

utils/exporters/blender/addons/io_three/dialogs.py

@@ -0,0 +1,112 @@
+from bpy import context
+
+CONTEXT = {
+    0: {
+        'title': "Error Message",
+        'icon': 'CANCEL'
+    },
+    1: {
+        'title': "Warning Message",
+        'icon': 'ERROR' # I prefer this icon for warnings
+    },
+    2: {
+        'title': "Message",
+        'icon': 'NONE'
+    },
+    3: {
+        'title': "Question",
+        'icon': 'QUESTION'
+    }
+}
+
+
+def error(message, title="", wrap=40):
+    """Creates an error dialog.
+
+    :param message: text of the message body
+    :param title: text to append to the title
+                  (Default value = "")
+    :param wrap: line width (Default value = 40)
+
+    """
+    _draw(message, title, wrap, 0)
+
+
+def warning(message, title="", wrap=40):
+    """Creates an error dialog.
+
+    :param message: text of the message body
+    :param title: text to append to the title
+                  (Default value = "")
+    :param wrap: line width (Default value = 40)
+
+    """
+    _draw(message, title, wrap, 1)
+
+
+
+def info(message, title="", wrap=40):
+    """Creates an error dialog.
+
+    :param message: text of the message body
+    :param title: text to append to the title
+                  (Default value = "")
+    :param wrap: line width (Default value = 40)
+
+    """
+    _draw(message, title, wrap, 2)
+
+
+
+def question(message, title="", wrap=40):
+    """Creates an error dialog.
+
+    :param message: text of the message body
+    :param title: text to append to the title
+                  (Default value = "")
+    :param wrap: line width (Default value = 40)
+
+    """
+    _draw(message, title, wrap, 3)
+
+
+
+# Great idea borrowed from
+# http://community.cgcookie.com/t/code-snippet-easy-error-messages/203
+def _draw(message, title, wrap, key):
+    """
+
+    :type message: str
+    :type title: str
+    :type wrap: int
+    :type key: int
+
+    """
+    lines = []
+    if wrap > 0:
+        while len(message) > wrap:
+            i = message.rfind(' ', 0, wrap)
+            if i == -1:
+                lines += [message[:wrap]]
+                message = message[wrap:]
+            else:
+                lines += [message[:i]]
+                message = message[i+1:]
+    if message:
+        lines += [message]
+
+    def draw(self, *args):
+        """
+
+        :param self:
+        :param *args:
+
+        """
+        for line in lines:
+            self.layout.label(line)
+
+    title = "%s: %s" % (title, CONTEXT[key]['title'])
+    icon = CONTEXT[key]['icon']
+
+    context.window_manager.popup_menu(
+        draw, title=title.strip(), icon=icon)

utils/exporters/blender/addons/io_three/exporter/__init__.py

@@ -1,7 +1,7 @@
 import os
 import sys
 import traceback
-from .. import constants, logger, exceptions
+from .. import constants, logger, exceptions, dialogs
 from . import scene, geometry, api, base_classes
 
 
@@ -9,7 +9,10 @@ def _error_handler(func):
     
     def inner(filepath, options, *args, **kwargs):
         level = options.get(constants.LOGGING, constants.DEBUG)
+        version = options.get('addon_version')
         logger.init('io_three.export.log', level=level)
+        if version is not None:
+            logger.debug("Addon Version %s", version)
         api.init()
         
         try:
@@ -55,16 +58,26 @@ def export_scene(filepath, options):
 
 @_error_handler
 def export_geometry(filepath, options, node=None):
+    msg = ""
+    exception = None
     if node is None:
         node = api.active_object()
         if node is None:
-            msg = 'Nothing selected'
+            msg = "Nothing selected"
             logger.error(msg)
-            raise exceptions.SelectionError(msg)
+            exception = exceptions.SelectionError
         if node.type != 'MESH':
-            msg = 'Not a valid mesh object'
-            raise exceptions.GeometryError(msg)
+            msg = "%s is not a valid mesh object" % node.name
+            logger.error(msg)
+            exception = exceptions.GeometryError
     
+    if exception is not None:
+        if api.batch_mode():
+            raise exception(msg)
+        else:
+            dialogs.error(msg)
+            return
+
     mesh = api.object.mesh(node, options)
     parent = base_classes.BaseScene(filepath, options)
     geo = geometry.Geometry(mesh, parent)

utils/exporters/blender/addons/io_three/exporter/api/__init__.py

@@ -13,6 +13,16 @@ def active_object():
     return bpy.context.scene.objects.active
 
 
+def batch_mode():
+    """
+
+    :return: Whether or not the session is interactive
+    :rtype: bool
+
+    """
+    return bpy.context.area is None
+
+
 def init():
     """Initializing the api module. Required first step before
     initializing the actual export process.