import bpy
from bpy.types import Panel, Operator






class ADDONNAME_PT_main_panel(Panel):
    bl_label = "Main Panel"
    bl_idname = "ADDONNAME_PT_main_panel"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    bl_category = "New Tab"

    def draw(self, context):
        layout = self.layout

        p_data = bpy.data.particles["ParticleSettings"]

        layout.prop(p_data, "count")
        layout.prop(p_data, "use_rotations")
        if p_data.use_rotations == True:
            layout.prop(p_data, "rotation_factor_random")



        layout.operator("addonname.myop_operator")






class ADDONNAME_OT_my_op(Operator):
    bl_label = "Add Particle System"
    bl_idname = "addonname.myop_operator"
    """Add a Particle System to your Selected Object"""



    def execute(self, context):
        scene = context.scene
        obj = context.object
        bpy.ops.object.particle_system_add()
        return {'FINISHED'}










classes = [ADDONNAME_PT_main_panel, ADDONNAME_OT_my_op]



def register():
    for cls in classes:
        bpy.utils.register_class(cls)


def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)



if __name__ == "__main__":
    register()