#---------------------------------------------------------------------------
# Name:        etg/sizer.py
# Author:      Kevin Ollivier
#              Robin Dunn
#
# Created:     26-Aug-2011
# Copyright:   (c) 2011 by Wide Open Technologies
# Copyright:   (c) 2011-2018 by Total Control Software
# License:     wxWindows License
#---------------------------------------------------------------------------

import etgtools
import etgtools.tweaker_tools as tools

PACKAGE   = "wx"
MODULE    = "_core"
NAME      = "sizer"   # Base name of the file to generate to for this script
DOCSTRING = ""

# The classes and/or the basename of the Doxygen XML files to be processed by
# this script.
ITEMS  = [
            'wxSizerItem',
            'wxSizerFlags',

            'wxSizer',
            'wxBoxSizer',
            'wxStaticBoxSizer',
            'wxGridSizer',
            'wxFlexGridSizer',
            'wxStdDialogButtonSizer',
        ]

#---------------------------------------------------------------------------

def run():
    # Parse the XML file(s) building a collection of Extractor objects
    module = etgtools.ModuleDef(PACKAGE, MODULE, NAME, DOCSTRING)
    etgtools.parseDoxyXML(module, ITEMS)

    #-----------------------------------------------------------------
    # Tweak the parsed meta objects in the module object as needed for
    # customizing the generated code and docstrings.


    c = module.find('wxSizerItem')
    assert isinstance(c, etgtools.ClassDef)
    tools.removeVirtuals(c)

    # ctors taking a sizer transfer ownership
    for m in c.find('wxSizerItem').all():
        if m.findItem('sizer'):
            m.find('sizer').transfer = True

    c.find('AssignSizer.sizer').transfer = True

    # userData args transfer ownership too, and we'll use wxPyUserData
    # instead of any wxObject
    for m in c.allItems():
        if isinstance(m, etgtools.MethodDef) and m.findItem('userData'):
            m.find('userData').transfer = True
            m.find('userData').type = 'wxPyUserData*'

    gud = c.find('GetUserData')
    gud.type = 'wxPyUserData*'
    gud.setCppCode('return dynamic_cast<wxPyUserData*>(self->GetUserData());')

    # these have been deprecated for a while so go ahead and get rid of them
    c.find('SetWindow').ignore()
    c.find('SetSizer').ignore()
    c.find('SetSpacer').ignore()

    c.addPrivateCopyCtor()

    #---------------------------------------------
    c = module.find('wxSizer')
    assert isinstance(c, etgtools.ClassDef)
    tools.fixSizerClass(c)
    c.addPrivateCopyCtor()
    c.addPrivateAssignOp()

    for func in c.findAll('Add') + c.findAll('Insert') + c.findAll('Prepend'):
        if func.findItem('sizer'):
            func.find('sizer').transfer = True
        if func.findItem('userData'):
            func.find('userData').transfer = True
            func.find('userData').type = 'wxPyUserData*'
        if func.findItem('item'):
            func.find('item').transfer = True

    c.find('GetChildren').overloads = []
    c.find('GetChildren').noCopy = True

    # Needs wxWin 2.6 compatibility
    c.find('Remove').findOverload('(wxWindow *window)').ignore()

    # deprecated and removed
    c.find('SetVirtualSizeHints').ignore()

    c.addPyMethod('AddMany', '(self, items)',
        doc="""\
        :meth:`AddMany` is a convenience method for adding several items to a sizer
        at one time. Simply pass it a list of tuples, where each tuple
        consists of the parameters that you would normally pass to the :meth:`Add`
        method.
        """,
        body="""\
        for item in items:
            if not isinstance(item, (tuple, list)):
                item = (item, )
            self.Add(*item)
        """)

    c.addCppMethod('wxSizerItem*', 'Add',
                   '(const wxSize& size, int proportion=0, int flag=0, '
                   'int border=0, wxPyUserData* userData /Transfer/ = NULL)',
        doc="Add a spacer using a :class:`Size` object.",
        body="return self->Add(size->x, size->y, proportion, flag, border, userData);")

    c.addCppMethod('wxSizerItem*', 'Prepend',
                   '(const wxSize& size, int proportion=0, int flag=0, '
                   'int border=0, wxPyUserData* userData /Transfer/ = NULL)',
        doc="Prepend a spacer using a :class:`Size` object.",
        body="return self->Prepend(size->x, size->y, proportion, flag, border, userData);")

    c.addCppMethod('wxSizerItem*', 'Insert',
                   '(ulong index, const wxSize& size, int proportion=0, int flag=0, '
                   'int border=0, wxPyUserData* userData /Transfer/ = NULL)',
        doc="Insert a spacer using a :class:`Size` object.",
        body="return self->Insert(index, size->x, size->y, proportion, flag, border, userData);")


    c.addCppMethod('wxSizerItem*', 'Add',
                   '(const wxSize& size, const wxSizerFlags& flags)',
        doc="Add a spacer using a :class:`Size` object.",
        body="return self->Add(size->x, size->y, *flags);")

    c.addCppMethod('wxSizerItem*', 'Prepend',
                   '(const wxSize& size, const wxSizerFlags& flags)',
        doc="Prepend a spacer using a :class:`Size` object.",
        body="return self->Prepend(size->x, size->y, *flags);")

    c.addCppMethod('wxSizerItem*', 'Insert',
                   '(ulong index, const wxSize& size, const wxSizerFlags& flags)',
        doc="Insert a spacer using a :class:`Size` object.",
        body="return self->Insert(index, size->x, size->y, *flags);")

    c.addPyMethod('__nonzero__', '(self)',
        doc="Can be used to test if the C++ part of the sizer still exists, with \n"
            "code like this::\n\n"
            "    if theSizer:\n"
            "        doSomething()",
        body="""\
        import wx.siplib
        return not wx.siplib.isdeleted(self)
        """)

    c.addPyMethod('__iter__', '(self)',
        doc = "A Py convenience method that allows Sizers to act as iterables that will yield their wx.SizerItems.",
        body = "for item in self.GetChildren(): yield item")

    c.addPyCode('Sizer.__bool__ = Sizer.__nonzero__') # For Python 3


    #---------------------------------------------
    c = module.find('wxBoxSizer')
    tools.fixSizerClass(c)
    c.find('wxBoxSizer.orient').default = 'wxHORIZONTAL'


    #---------------------------------------------
    c = module.find('wxStaticBoxSizer')
    tools.fixSizerClass(c)
    c.find('wxStaticBoxSizer.orient').default = 'wxHORIZONTAL'


    #---------------------------------------------
    c = module.find('wxGridSizer')
    tools.fixSizerClass(c)

    c.addPyMethod('CalcRowsCols', '(self)',
        doc="""\
        CalcRowsCols() -> (rows, cols)

        Calculates how many rows and columns will be in the sizer based
        on the current number of items and also the rows, cols specified
        in the constructor.
        """,
        body="""\
        nitems = len(self.GetChildren())
        rows = self.GetRows()
        cols = self.GetCols()
        assert rows != 0 or cols != 0, "Grid sizer must have either rows or columns fixed"
        if cols != 0:
            rows = (nitems + cols - 1) / cols
        elif rows != 0:
            cols = (nitems + rows - 1) / rows
        return (rows, cols)
        """)

    #---------------------------------------------
    c = module.find('wxFlexGridSizer')
    tools.fixSizerClass(c)


    #---------------------------------------------
    c = module.find('wxStdDialogButtonSizer')
    tools.fixSizerClass(c)



    module.addPyCode("PySizer = wx.deprecated(Sizer, 'Use Sizer instead.')")

    module.addItem(tools.wxListWrapperTemplate('wxSizerItemList', 'wxSizerItem', module))


    #-----------------------------------------------------------------
    tools.doCommonTweaks(module)
    tools.runGenerators(module)


#---------------------------------------------------------------------------
if __name__ == '__main__':
    run()

