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"""
Calling a File Selector
+++++++++++++++++++++++
This example shows how an operator can use the file selector.
Notice the invoke function calls a window manager method and returns
``{'RUNNING_MODAL'}``, this means the file selector stays open and the operator does not
exit immediately after invoke finishes.
The file selector runs the operator, calling :class:`Operator.execute` when the
user confirms.
The :class:`Operator.poll` function is optional, used to check if the operator
can run.
"""
import bpy
class ExportSomeData(bpy.types.Operator):
"""Test exporter which just writes hello world"""
bl_idname = "export.some_data"
bl_label = "Export Some Data"
filepath = bpy.props.StringProperty(subtype="FILE_PATH")
@classmethod
def poll(cls, context):
return context.object is not None
def execute(self, context):
file = open(self.filepath, 'w')
file.write("Hello World " + context.object.name)
return {'FINISHED'}
def invoke(self, context, event):
context.window_manager.fileselect_add(self)
return {'RUNNING_MODAL'}
# Only needed if you want to add into a dynamic menu
def menu_func(self, context):
self.layout.operator_context = 'INVOKE_DEFAULT'
self.layout.operator(ExportSomeData.bl_idname, text="Text Export Operator")
# Register and add to the file selector
bpy.utils.register_class(ExportSomeData)
bpy.types.INFO_MT_file_export.append(menu_func)
# test call
bpy.ops.export.some_data('INVOKE_DEFAULT')
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