[GNUccess-design] Design plan

[Przemyslaw K. R. <pr1...@st...>]

Currently we have following opened tasks:

 * GcEvn
 * GcUtils
 * GcObject Hierarchy
 * GNUccess Application

Good names, but what this means ?

I will try to specify global architecture of planed system. 

.----------.
| Modules  |
`----------'

1. Database Abstraction Layer (DAL)

  Posible features:

    - Visual Conection Constructor.

    - Datatype abstraction.

    - Query syntax abstraction. ( Created queries should work i every 
      supported db engines)

    - Meta data access and modyfication support. (Adding column, 
      deleting column, adding checks, itd. ) [TODO]
  
    - Python objects persistance

2. Database Structure Editor/Creator 

  Posible features:

    - Adding Tables, Colums, Indexes, Constraints, itd..

    - ERD 

3. Simple data editor.

  Displays databse data in list and allows change, add or delete table 
  row.

4. RAD for Python

  - Forms creator
  
    - Properties editing
 
    - Layout editing

    - Some wizards

  - Componet Editor with Source code editing (shell is not enough)

  [TODO]

5. Components Core (GcObject) 
  
  my proposition:

  class GcObject:
	__editors__ = {
		'Name':	 Editors.Text,
		'Description': Editors.Text
	}
	__serializable__ = [ 'Name', 'Position' ]
	
	def toXML(self):
		xml = "<node class='"+self.__class__.__name__+"'...>"
		for var in self.__class__.__serializable__
			xml = xml +GNUccess.serialize(var, 
				     eval('self.'+var))
		...

	def Icon():
		...
	
  Filed __editors__ should declare inforamtion needed to generate 
properties panel. 

  Other example:

  class GcButton(GcWidget):
	__editiors__ = {
		"Label": Editor.Text,
		"FrameColor": Editor.Color,
		"FrameStyle": WidgetEditor.FrameStyle
	}
	__serializable__ = GcWidget.__serializable__ + [ "Label", 
"FrameColor", "FrameStyle" ]
	
	...


  Ofcourse component <-> wx connection is missing. 

Other modules:
[TODO]

.---------------------------------.
| * Przemysław Krzysztof Rekucki .|
| P.R...@st... |
`---------------------------------'