#---------------------------------------------------------------------------
# Name:        etg/window.py
# Author:      Robin Dunn
#
# Created:     27-Nov-2010
# Copyright:   (c) 2010-2020 by Total Control Software
# License:     wxWindows License
#---------------------------------------------------------------------------

import etgtools
import etgtools.tweaker_tools as tools
from etgtools import ClassDef, MethodDef, ParamDef

PACKAGE   = "wx"
MODULE    = "_core"
NAME      = "window"   # 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  = [ 'wxVisualAttributes',
           'wxWindow' ]

OTHERDEPS = [ 'src/window_ex.cpp',   # some helper C++ code
              ]

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

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('wxVisualAttributes')
    assert isinstance(c, etgtools.ClassDef)
    # Mark the structure members as read-only, and make copies of the values
    # when fetching them. This is to protect against cases where the
    # VisualAttributes object is transient and may be GC'd while we still are
    # using a reference to a C++ member value.
    c.find('colBg').noSetter = True
    c.find('colBg').getCode = """\
        wxColour* clr = new wxColour(sipCpp->colBg);
        sipPy = wxPyConstructObject((void*)clr, "wxColour", true);
    """
    c.find('colFg').noSetter = True
    c.find('colFg').getCode = """\
        wxColour* clr = new wxColour(sipCpp->colFg);
        sipPy = wxPyConstructObject((void*)clr, "wxColour", true);
    """
    c.find('font').noSetter = True
    c.find('font').getCode = """\
        wxFont* font = new wxFont(sipCpp->font);
        sipPy = wxPyConstructObject((void*)font, "wxFont", true);
    """


    c = module.find('wxWindow')
    assert isinstance(c, etgtools.ClassDef)
    module.addGlobalStr('wxPanelNameStr', c)

    c.find('FindFocus').mustHaveApp()
    c.find('GetCapture').mustHaveApp()

    # First we need to let the wrapper generator know about wxWindowBase since
    # AddChild and RemoveChild need to use that type in order to be virtualized.
    winbase = ClassDef(name='wxWindowBase', bases=['wxEvtHandler'], abstract=True,
            items=[MethodDef(name='AddChild', isVirtual=True, type='void', protection='public',
                        items=[ParamDef(name='child', type='wxWindowBase*')]),
                   MethodDef(name='RemoveChild', isVirtual=True, type='void', protection='public',
                        items=[ParamDef(name='child', type='wxWindowBase*')])
                   ])
    module.insertItemBefore(c, winbase)

    # Now change the base class of wxWindow
    c.bases = ['wxWindowBase']

    # And fix the arg types we get from Doxy
    c.find('AddChild.child').type = 'wxWindowBase*'
    c.find('RemoveChild.child').type = 'wxWindowBase*'


    # We now return you to our regularly scheduled programming...
    c.includeCppCode('src/window_ex.cpp')

    # ignore some overloads that will be ambiguous after wrapping
    c.find('GetChildren').overloads = []
    c.find('GetChildren').noCopy = True
    for name in ['GetVirtualSize',
                 'GetPosition',
                 'GetScreenPosition']:
        c.find(name).findOverload('int *').ignore()

    # Fix ClientToScreen/ScreenToClient int * overloads
    for name in ['ClientToScreen', 'ScreenToClient']:
        c.find(name).findOverload('int *').find('x').inOut = True
        c.find(name).findOverload('int *').find('y').inOut = True

    # Like the above, but these also need to transplant the docs from the
    # ignored item to the non-ignored overload.
    for name in ['GetClientSize', 'GetSize']:
        c.find(name).findOverload('int *').ignore()
        item = c.find(name)
        ov = item.overloads[0]
        item.briefDoc = ov.briefDoc
        item.detailedDoc = ov.detailedDoc

    # Release the GIL for potentially blocking or long-running functions
    c.find('PopupMenu').releaseGIL()
    c.find('ProcessEvent').releaseGIL()
    c.find('ProcessWindowEvent').releaseGIL()
    c.find('ProcessWindowEventLocally').releaseGIL()

    # Add a couple wrapper functions for symmetry with the getters of the same name
    c.addPyMethod('SetRect', '(self, rect)', 'return self.SetSize(rect)')
    c.addPyProperty('Rect GetRect SetRect')
    c.addPyMethod('SetClientRect', '(self, rect)', 'return self.SetClientSize(rect)')
    c.addPyProperty('ClientRect GetClientRect SetClientRect')

    # Split the overloaded GetTextExtent into two distinct methods, because the
    # resulting method signatures are not different enough from the Python
    # perspective.
    m1 = c.find('GetTextExtent') #.findOverload('int *')
    assert len(m1.overloads) == 1
    m2 = m1.overloads.pop()
    c.insertItemAfter(m1, m2)

    # Now do the needed tweaks for the full GetFullTextExtent
    m1.pyName = 'GetFullTextExtent'
    m1.find('w').out = True
    m1.find('h').out = True
    m1.find('descent').out = True
    m1.find('externalLeading').out = True

    c.find('GetHandle').type = 'wxUIntPtr*'
    c.find('GetHandle').detailedDoc = [
        """The returned value differs from the C++ version of GetHandle when \
        running on the GTK port. When running on Wayland with GTK, this \
        function returns a `wl_surface` pointer for the native OS window \
        containing the widget. On X11 with GTK, this returns the X window \
        ID for the containing window. On any other backend with GTK, this \
        function returns 0.\n\n"""

        """On some platforms this may return 0 if the window has not yet been shown."""
    ]
    c.find('GetHandle').setCppCode("return new wxUIntPtr(wxPyGetWinHandle(self));")

    c.addCppMethod('void*', 'GetGtkWidget', '()', """\
    #ifdef __WXGTK__
        return (void*)self->GetHandle();
    #else
        return NULL;
    #endif
    """)

    c.addCppMethod('void', 'AssociateHandle', '(long handle)',
        doc="Associate the window with a new native handle",
        body="self->AssociateHandle((WXWidget)handle);")
    c.addCppMethod('void', 'DissociateHandle', '()',
        doc="Dissociate the current native handle from the window",
        body="self->DissociateHandle();")


    # Add some new methods
    c.addCppMethod('wxWindow*', 'GetTopLevelParent', '()',
                   'return wxGetTopLevelParent(self);',
                   briefDoc="Returns the first ancestor of this window which is a top-level window.")

    c.addCppMethod('bool', 'MacIsWindowScrollbar', '(const wxWindow* sb)', """\
    #ifdef __WXMAC__
        return self->MacIsWindowScrollbar(sb);
    #else
        return false;
    #endif
    """,
    pyArgsString="(sb)",
    briefDoc="Is the given widget one of this window's built-in scrollbars?  Only applicable on Mac.")


    c.addCppMethod('void', 'SetDimensions', '(int x, int y, int width, int height, int sizeFlags=wxSIZE_AUTO)',
        pyArgsString="(x, y, width, height, sizeFlags=SIZE_AUTO)",
        body="""\
        self->SetSize(x, y, width, height, sizeFlags);
        """)
    c.addPyCode("Window.SetDimensions = wx.deprecated(Window.SetDimensions, 'Use SetSize instead.')")

    # Make the Register/UnregisterHotKey functions be available on Windows,
    # and empty stubs otherwise
    c.find('RegisterHotKey').setCppCode("""\
    #if wxUSE_HOTKEY
        return self->RegisterHotKey(hotkeyId, modifiers, virtualKeyCode);
    #else
        return false;
    #endif
    """)
    c.find('UnregisterHotKey').setCppCode("""\
    #if wxUSE_HOTKEY
        return self->UnregisterHotKey(hotkeyId);
    #else
        return false;
    #endif
    """)
    c.find('RegisterHotKey').isVirtual = False
    c.find('UnregisterHotKey').isVirtual = False


    c.find('SetDoubleBuffered').setCppCode("""\
    #if defined(__WXGTK20__) || defined(__WXGTK3__) || defined(__WXMSW__)
        self->SetDoubleBuffered(on);
    #endif
    """)

    c.addPyMethod('__nonzero__', '(self)',
        doc="Can be used to test if the C++ part of the window still exists, with \n"
            "code like this::\n\n"
            "    if theWindow:\n"
            "        doSomething()",
        body="""\
        import wx.siplib
        return not wx.siplib.isdeleted(self)
        """)
    c.addPyCode('Window.__bool__ = Window.__nonzero__') # For Python 3


    c.addPyMethod('DestroyLater', '(self)',
        doc="""\
           Schedules the window to be destroyed in the near future.

           This should be used whenever Destroy could happen too soon, such
           as when there may still be events for this window or its children
           waiting in the event queue.
           """,
        body="""\
            self.Hide()
            wx.GetApp().ScheduleForDestruction(self)
            """)

    c.addPyMethod('DLG_UNIT', '(self, dlg_unit)',
        doc="""\
            A convenience wrapper for :meth:`ConvertDialogToPixels`.
            """,
        body="""\
            is_wxType = isinstance(dlg_unit, (wx.Size, wx.Point))
            pix = self.ConvertDialogToPixels(dlg_unit)
            if not is_wxType:
                pix = tuple(pix)
            return pix
            """)


    # wxAccessbile is MSW only. Provide a NotImplemented fallback for the
    # other platforms.
    c.find('GetAccessible').setCppCode("""\
        #if wxUSE_ACCESSIBILITY
            return self->GetAccessible();
        #else
            wxPyRaiseNotImplemented();
            return NULL;
        #endif
        """)
    c.find('GetOrCreateAccessible').setCppCode("""\
        #if wxUSE_ACCESSIBILITY
            return self->GetOrCreateAccessible();
        #else
            wxPyRaiseNotImplemented();
            return NULL;
        #endif
        """)
    c.find('CreateAccessible').factory = True
    c.find('CreateAccessible').setCppCode("""\
        #if wxUSE_ACCESSIBILITY
            return self->CreateAccessible();
        #else
            wxPyRaiseNotImplemented();
            return NULL;
        #endif
        """)
    c.find('SetAccessible.accessible').transfer = True
    c.find('SetAccessible').setCppCode("""\
        #if wxUSE_ACCESSIBILITY
            self->SetAccessible(accessible);
        #else
            wxPyRaiseNotImplemented();
        #endif
        """)

    # Make some of the protected methods visible and overridable from Python
    c.find('SendDestroyEvent').ignore(False)

    c.find('Destroy').transferThis=True
    c.addPyMethod('PostCreate', '(self, pre)', 'pass', deprecated='PostCreate is no longer necessary.')

    # transfer ownership of these parameters to the C++ object
    c.find('SetCaret.caret').transfer = True
    c.find('SetToolTip.tip').transfer = True
    c.find('SetDropTarget.target').transfer = True
    c.find('SetConstraints.constraints').transfer = True
    c.find('SetSizer.sizer').transfer = True
    c.find('SetSizerAndFit.sizer').transfer = True

    # Change some =0 default values to =NULL so the docs will make more sense
    c.find('FindWindowById.parent').default='NULL'
    c.find('FindWindowByLabel.parent').default='NULL'
    c.find('FindWindowByName.parent').default='NULL'

    # Transfer ownership of the wx.EvtHandler when pushing/popping them...
    c.find('PushEventHandler.handler').transfer = True
    c.find('PopEventHandler').transferBack = True

    # ...and for Set/RemoveEventHandler too
    c.find('SetEventHandler.handler').transfer = True
    c.find('RemoveEventHandler.handler').transferBack = True


    # Define some properties using the getter and setter methods
    c.addProperty('AcceleratorTable GetAcceleratorTable SetAcceleratorTable')
    c.addProperty('AutoLayout GetAutoLayout SetAutoLayout')
    c.addProperty('BackgroundColour GetBackgroundColour SetBackgroundColour')
    c.addProperty('BackgroundStyle GetBackgroundStyle SetBackgroundStyle')
    c.addProperty('EffectiveMinSize GetEffectiveMinSize')
    c.addProperty('BestSize GetBestSize')
    c.addProperty('BestVirtualSize GetBestVirtualSize')
    c.addProperty('Border GetBorder')
    c.addProperty('Caret GetCaret SetCaret')
    c.addProperty('CharHeight GetCharHeight')
    c.addProperty('CharWidth GetCharWidth')
    c.addProperty('Children GetChildren')
    c.addProperty('ClientAreaOrigin GetClientAreaOrigin')
    c.addProperty('ClientSize GetClientSize SetClientSize')
    c.addProperty('Constraints GetConstraints SetConstraints')
    c.addProperty('ContainingSizer GetContainingSizer SetContainingSizer')
    c.addProperty('Cursor GetCursor SetCursor')
    c.addProperty('DefaultAttributes GetDefaultAttributes')
    c.addProperty('DropTarget GetDropTarget SetDropTarget')
    c.addProperty('EventHandler GetEventHandler SetEventHandler')
    c.addProperty('ExtraStyle GetExtraStyle SetExtraStyle')
    c.addProperty('Font GetFont SetFont')
    c.addProperty('ForegroundColour GetForegroundColour SetForegroundColour')
    c.addProperty('GrandParent GetGrandParent')
    c.addProperty('TopLevelParent GetTopLevelParent')
    c.addProperty('Handle GetHandle')
    c.addProperty('HelpText GetHelpText SetHelpText')
    c.addProperty('Id GetId SetId')
    c.addProperty('Label GetLabel SetLabel')
    c.addProperty('LayoutDirection GetLayoutDirection SetLayoutDirection')
    c.addProperty('MaxHeight GetMaxHeight')
    c.addProperty('MaxSize GetMaxSize SetMaxSize')
    c.addProperty('MaxWidth GetMaxWidth')
    c.addProperty('MinHeight GetMinHeight')
    c.addProperty('MinSize GetMinSize SetMinSize')
    c.addProperty('MinWidth GetMinWidth')
    c.addProperty('Name GetName SetName')
    c.addProperty('Parent GetParent')
    c.addProperty('Position GetPosition SetPosition')
    c.addProperty('ScreenPosition GetScreenPosition')
    c.addProperty('ScreenRect GetScreenRect')
    c.addProperty('Size GetSize SetSize')
    c.addProperty('Sizer GetSizer SetSizer')
    c.addProperty('ThemeEnabled GetThemeEnabled SetThemeEnabled')
    c.addProperty('ToolTip GetToolTip SetToolTip')
    c.addProperty('UpdateClientRect GetUpdateClientRect')
    c.addProperty('UpdateRegion GetUpdateRegion')
    c.addProperty('Validator GetValidator SetValidator')
    c.addProperty('VirtualSize GetVirtualSize SetVirtualSize')
    c.addProperty('WindowStyle GetWindowStyle SetWindowStyle')
    c.addProperty('WindowStyleFlag GetWindowStyleFlag SetWindowStyleFlag')
    c.addProperty('WindowVariant GetWindowVariant SetWindowVariant')
    c.addProperty('Shown IsShown Show')
    c.addProperty('Enabled IsEnabled Enable')
    c.addProperty('TopLevel IsTopLevel')
    c.addProperty('MinClientSize GetMinClientSize SetMinClientSize')
    c.addProperty('MaxClientSize GetMaxClientSize SetMaxClientSize')
    ##c.addProperty('GtkWidget GetGtkWidget')

    tools.fixWindowClass(c)
    tools.addSipConvertToSubClassCode(c)

    # for compatibility with Classic
    c.addPyMethod('GetPositionTuple', '(self)', 'return self.GetPosition()', deprecated='Use GetPosition instead')
    c.addPyMethod('GetSizeTuple', '(self)', 'return self.GetSize()', deprecated='Use GetSize instead')
    c.addPyMethod('MoveXY',  '(self, x, y)', 'return self.Move(x, y)', deprecated='Use Move instead.')
    c.addPyMethod('SetSizeWH', '(self, w, h)', 'return self.SetSize(w,h)', deprecated='Use SetSize instead.')
    c.addPyMethod('SetVirtualSizeWH', '(self, w, h)', 'return self.SetVirtualSize(w,h)', deprecated='Use SetVirtualSize instead.')
    c.addPyMethod('GetVirtualSizeTuple', '(self)', 'return self.GetVirtualSize()', deprecated='Use GetVirtualSize instead.')
    c.addPyMethod('SetToolTipString',  '(self, string)', 'return self.SetToolTip(string)', deprecated='Use SetToolTip instead.')
    c.addPyMethod('ConvertDialogPointToPixels', '(self, point)', 'return self.ConvertDialogToPixels(point)', deprecated='Use ConvertDialogToPixels instead.')
    c.addPyMethod('ConvertDialogSizeToPixels', '(self, size)', 'return self.ConvertDialogToPixels(point)', deprecated='Use ConvertDialogToPixels instead.')

    c.addPyMethod('SetSizeHintsSz', '(self, minSize, maxSize=wx.DefaultSize, incSize=wx.DefaultSize)',
                  'return self.SetSizeHints(minSize, maxSize, incSize)',
                  deprecated='Use SetSizeHints instead.')


    # TODO: the C++ DoEraseBackground is protected in wxMSW. We need a way to
    # unprotect it, like adding a shim in the sip class...
    #c.addHeaderCode("""\
    #    #ifdef __WXMSW__
    #    #include <wx/msw/dc.h>
    #    #endif
    #    """)
    #c.addCppMethod('bool', 'DoEraseBackground', '(wxDC* dc)',
    #    doc="Default erase background implementation.",
    #    body="""\
    #    #ifdef __WXMSW__
    #        return self->DoEraseBackground(((wxMSWDCImpl*)dc->GetImpl())->GetHDC());
    #    #else
    #        dc->SetBackground(wxBrush(self->GetBackgroundColour()));
    #        dc->Clear();
    #        return true;
    #    #endif
    #    """)


    # this is a nested class
    c.find('ChildrenRepositioningGuard').addPrivateCopyCtor()
    module.insertItem(0,
            etgtools.TypedefDef(type='wxWindow::ChildrenRepositioningGuard',
                                name='ChildrenRepositioningGuard'))


    #-----------------------------------------------------------------------
    # Other stuff

    module.addPyCode('''\
    class FrozenWindow(object):
        """
        A context manager to be used with Python 'with' statements
        that will freeze the given window for the duration of the
        with block.
        """
        def __init__(self, window):
            self._win = window
        def __enter__(self):
            self._win.Freeze()
            return self
        def __exit__(self, exc_type, exc_val, exc_tb):
            self._win.Thaw()
    ''')

    module.addPyCode('''\
        def DLG_UNIT(win, dlg_unit, val2=None):
            """
            Convenience function for converting a wx.Point, wx.Size or
            (x,y) in dialog units to pixels, using the given window as a
            reference.
            """
            if val2 is not None:
                dlg_unit = (dlg_unit, val2)
            is_wxType = isinstance(dlg_unit, (wx.Size, wx.Point))
            pix = win.ConvertDialogToPixels(dlg_unit)
            if not is_wxType:
                pix = tuple(pix)
            return pix

        DLG_PNT = wx.deprecated(DLG_UNIT, "Use DLG_UNIT instead.")
        DLG_SZE = wx.deprecated(DLG_UNIT, "Use DLG_UNIT instead.")
        ''')


    # Add a wrapper for wxWindowList and a new iterator class for it that
    # makes wxWindowList quack like a read-only Python sequence.
    module.addItem(tools.wxListWrapperTemplate('wxWindowList', 'wxWindow', module))

    module.addCppFunction('wxWindowList*', 'GetTopLevelWindows', '()',
        noCopy=True,
        briefDoc="Returns a list-like object of the the application's top-level windows, (frames,dialogs, etc.)",
        body="return &wxTopLevelWindows;")

    module.addPyCode("PyWindow = wx.deprecated(Window, 'Use Window instead.')")


    module.find('wxFindWindowAtPointer.pt').out = True

    module.find('wxFindWindowAtPointer').mustHaveApp()
    module.find('wxGetActiveWindow').mustHaveApp()
    module.find('wxGetTopLevelParent').mustHaveApp()


    module.addCppFunction('wxWindow*', 'FindWindowById', '(long id, const wxWindow* parent=NULL)',
        doc="""\
            FindWindowById(id, parent=None) -> Window

            Find the first window in the application with the given id. If parent
            is None, the search will start from all top-level frames and dialog
            boxes; if non-None, the search will be limited to the given window
            hierarchy. The search is recursive in both cases.
            """,
        body="return wxWindow::FindWindowById(id, parent);",
        mustHaveAppFlag=True)


    module.addCppFunction('wxWindow*', 'FindWindowByName', '(const wxString& name, const wxWindow* parent=NULL)',
        doc="""\
            FindWindowByName(name, parent=None) -> Window

            Find a window by its name (as given in a window constructor or Create
            function call). If parent is None, the search will start from all
            top-level frames and dialog boxes; if non-None, the search will be
            limited to the given window hierarchy. The search is recursive in both
            cases.

            If no window with the name is found, wx.FindWindowByLabel is called.""",
        body="return wxWindow::FindWindowByName(*name, parent);",
        mustHaveAppFlag=True)


    module.addCppFunction('wxWindow*', 'FindWindowByLabel', '(const wxString& label, const wxWindow* parent=NULL)',
        doc="""\
            FindWindowByLabel(label, parent=None) -> Window

            Find a window by its label. Depending on the type of window, the label
            may be a window title or panel item label. If parent is None, the
            search will start from all top-level frames and dialog boxes; if
            non-None, the search will be limited to the given window
            hierarchy. The search is recursive in both cases.""",
        body="return wxWindow::FindWindowByLabel(*label, parent);",
        mustHaveAppFlag=True)

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



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