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//{{{  Banner                           

//============================================================================

//

//     wizard.cxx

//

//     Implementation of the CdlWizard class

//

//============================================================================

//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 2002 Bart Veer

// Copyright (C) 1999, 2000 Red Hat, Inc.

//

// This file is part of the eCos host tools.

//

// This program is free software; you can redistribute it and/or modify it 

// under the terms of the GNU General Public License as published by the Free 

// Software Foundation; either version 2 of the License, or (at your option) 

// any later version.

// 

// This program is distributed in the hope that it will be useful, but WITHOUT 

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 

// more details.

// 

// You should have received a copy of the GNU General Public License along with

// this program; if not, write to the Free Software Foundation, Inc., 

// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

//============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   bartv

// Contact(s):  bartv

// Date:        1999/03/01

// Version:     0.01

//

//####DESCRIPTIONEND####

//============================================================================

//}}}

//{{{  #include's                       

// ----------------------------------------------------------------------------

#include "cdlconfig.h"

// Get the infrastructure types, assertions, tracing and similar

// facilities.

#include <cyg/infra/cyg_ass.h>

#include <cyg/infra/cyg_trac.h>

// <cdlcore.hxx> defines everything implemented in this module.

// It implicitly supplies <string>, <vector> and <map> because

// the class definitions rely on these headers.

#include <cdlcore.hxx>

//}}}

//{{{  Statics                          

// ----------------------------------------------------------------------------

CYGDBG_DEFINE_MEMLEAK_COUNTER(CdlWizardBody);

//}}}

//{{{  Constructor                      

// ----------------------------------------------------------------------------

// Constructor. The real work is actually done in the parse routine.

CdlWizardBody::CdlWizardBody(std::string name_arg)

    : CdlNodeBody(name_arg),

      CdlParentableBody(),

      CdlUserVisibleBody()

{

    CYG_REPORT_FUNCNAME("CdlWizardBody:: constructor");

    CYG_REPORT_FUNCARG1XV(this);

    cdlwizardbody_cookie = CdlWizardBody_Magic;

    CYGDBG_MEMLEAK_CONSTRUCTOR();

    CYG_POSTCONDITION_THISC();

    CYG_REPORT_RETURN();

}

//}}}

//{{{  Destructor                       

// ----------------------------------------------------------------------------

// The real work is done in the base classes.

CdlWizardBody::~CdlWizardBody()

{

    CYG_REPORT_FUNCNAME("CdlWizardBody:: destructor");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    cdlwizardbody_cookie = CdlWizardBody_Invalid;

    CYGDBG_MEMLEAK_DESTRUCTOR();

    CYG_REPORT_RETURN();

}

//}}}

//{{{  parse_wizard()                   

// ----------------------------------------------------------------------------

// Parsing a wizard definition.

int

CdlWizardBody::parse_wizard(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("CdlWizard::parse_wizard", "result %d");

    CYG_REPORT_FUNCARG1("argc %d", argc);

    CYG_PRECONDITION_CLASSC(interp);

    int         result          = TCL_OK;

    std::string diag_argv0      = CdlParse::get_tcl_cmd_name(argv[0]);

    CdlLoadable  loadable       = interp->get_loadable();

    CdlContainer parent         = interp->get_container();

    CdlToplevel  toplevel       = interp->get_toplevel();

    CYG_ASSERT_CLASSC(loadable);        // There should always be a loadable during parsing

    CYG_ASSERT_CLASSC(parent);

    CYG_ASSERT_CLASSC(toplevel);

    // The new wizard should be created and added to the loadable

    // early on. If there is a parsing error it will get cleaned up

    // automatically as a consequence of the loadable destructor.

    // However it is necessary to validate the name first. Errors

    // should be reported via CdlParse::report_error(), which

    // may result in an exception.

    CdlWizard    new_wizard     = 0;

    try {

        // Currently there are no command-line options. This may change in future.

        if (3 != argc) {

            CdlParse::report_error(interp, "", std::string("Incorrect number of arguments to `") + diag_argv0 +

                                   "'\nExpecting name and properties list.");

        } else if (!Tcl_CommandComplete(CDL_TCL_CONST_CAST(char*, argv[2]))) {

            CdlParse::report_error(interp, "", std::string("Invalid property list for cdl_wizard `") + argv[1]+ "'.");

        } else if (0 != toplevel->lookup(argv[1])) {

            CdlParse::report_error(interp, "", std::string("Wizard `") + argv[1] +

                                   "' cannot be loaded.\nThe name is already in use.");

        } else {

            new_wizard = new CdlWizardBody(argv[1]);

            toplevel->add_node(loadable, parent, new_wizard);

            // At this stage new_wizard has been created and added to the hierarchy.

            // The main work now is to add the properties.

            // Push the wizard as the current base object early on.

            // This aids diagnostics.

            CdlNode old_node = 0;

            std::string tcl_result;

            std::vector<CdlInterpreterCommandEntry>  new_commands;

            std::vector<CdlInterpreterCommandEntry>* old_commands = 0;

            static CdlInterpreterCommandEntry commands[] =

            {

                CdlInterpreterCommandEntry("init_proc",          &parse_init_proc       ),

                CdlInterpreterCommandEntry("decoration_proc",    &parse_decoration_proc ),

                CdlInterpreterCommandEntry("screen",             &parse_screen          ),

                CdlInterpreterCommandEntry("confirm_proc",       &parse_confirm_proc    ),

                CdlInterpreterCommandEntry("cancel_proc",        &parse_cancel_proc     ),

                CdlInterpreterCommandEntry("",                   0                      ),

            };

            int i;

            for (i = 0; 0 != commands[i].command; i++) {

                new_commands.push_back(commands[i]);

            }

            CdlParentableBody::add_property_parsers(new_commands);

            CdlUserVisibleBody::add_property_parsers(new_commands);

            CdlNodeBody::add_property_parsers(new_commands);

            // Now evaluate the body. If an error occurs then typically

            // this will be reported via CdlParse::report_error(),

            // but any exceptions will have been intercepted and

            // turned into a Tcl error.

            old_node = interp->push_node(new_wizard);

            old_commands = interp->push_commands(new_commands);

            result = interp->eval(argv[2], tcl_result);

            interp->pop_node(old_node);

            interp->pop_commands(old_commands);

            if (TCL_OK == result) {

                // Even if there were errors, they were not fatal. There may

                // now be a number of properties for this option, and some

                // validation should take place. Start with the base classes.

                new_wizard->CdlNodeBody::check_properties(interp);

                new_wizard->CdlUserVisibleBody::check_properties(interp);

                new_wizard->CdlParentableBody::check_properties(interp);

                // The init_proc and decoration_proc properties are

                // optional. The confirm_proc and cancel_proc properties

                // are compulsory, and there should be at least one screen

                // definition.

                if (new_wizard->count_properties(CdlPropertyId_InitProc) > 1) {

                    CdlParse::report_error(interp, "", "A wizard should have only one `init_proc' property.");

                }

                if (new_wizard->count_properties(CdlPropertyId_DecorationProc) > 1) {

                    CdlParse::report_error(interp, "", "A wizard should have only one `decoration_proc' property.");

                }

                if (new_wizard->count_properties(CdlPropertyId_ConfirmProc) != 1) {

                    CdlParse::report_error(interp, "", "A wizard should have one `confirm_proc' property.");

                }

                if (new_wizard->count_properties(CdlPropertyId_CancelProc) != 1) {

                    CdlParse::report_error(interp, "", "A wizard should have one `cancel_proc' property.");

                }

                if (new_wizard->count_properties(CdlPropertyId_Screen) < 1) {

                    CdlParse::report_error(interp, "", "A wizard should have at least one `screen' property.");

                }

                // It is necessary to check that all the screen properties have unique numbers

                const std::vector<CdlProperty>& properties = new_wizard->get_properties();

                std::vector<CdlProperty>::const_iterator prop_i, prop_j;

                for (prop_i = properties.begin(); prop_i != properties.end(); prop_i++) {

                    if (CdlPropertyId_Screen != (*prop_i)->get_property_name()) {

                        continue;

                    }

                    CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(*prop_i);

                    CYG_ASSERT_CLASSC(tclprop);

                    cdl_int num1 = tclprop->get_number();

                    for (prop_j = ++prop_i; prop_j != properties.end(); prop_j++) {

                        if (CdlPropertyId_Screen != (*prop_j)->get_property_name()) {

                            continue;

                        }

                        CdlProperty_TclCode tclprop2 = dynamic_cast<CdlProperty_TclCode>(*prop_j);

                        CYG_ASSERT_CLASSC(tclprop2);

                        cdl_int num2 = tclprop2->get_number();

                        if (num1 == num2) {

                            std::string tmp = "";

                            Cdl::integer_to_string(num1, tmp);

                            CdlParse::report_error(interp, "", "Duplicate definition of screen `" + tmp + "'.");

                            break;

                        }

                    }

               }

                // There is no restriction on what screen numbers can be

                // defined (screens may appear and disappear during

                // development). It would be nice to validate that the

                // Tcl fragments never switch to an invalid screen, but

                // there is no easy way to do that.

            }

        }

    } catch(...) {

        if (0 != new_wizard) {

            delete new_wizard;

        }

        throw;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

// ----------------------------------------------------------------------------

// Syntax: cancel_proc <tclcode>

int

CdlWizardBody::parse_cancel_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_cancel_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_CancelProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

// ----------------------------------------------------------------------------

// Syntax: confirm_proc <tclcode>

int

CdlWizardBody::parse_confirm_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_confirm_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_ConfirmProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

// ----------------------------------------------------------------------------

// syntax: decoration_proc <tclcode>

int

CdlWizardBody::parse_decoration_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_decoration_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_DecorationProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

// ----------------------------------------------------------------------------

// Syntax: init_proc <tclcode>

int

CdlWizardBody::parse_init_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_init_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_InitProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

// ----------------------------------------------------------------------------

// The screen property is a little bit special and cannot be handled by the

// generic parsers. There are two arguments, a number and some Tcl code.

int

CdlWizardBody::parse_screen(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAME("CdlParse::parse_screen");

    CYG_REPORT_FUNCARG1("argc %d", argc);

    CYG_PRECONDITION_CLASSC(interp);

    CdlProperty_TclCode new_property = 0;

    cdl_int number = 0;

    try {

        std::vector<std::pair<std::string,std::string> > options;

        int data_index      = CdlParse::parse_options(interp, std::string("property ") + argv[0], 0, argc, argv, 1, options);

        if ((data_index + 2) != argc) {

            CdlParse::report_property_parse_error(interp, argv[0], std::string("Invalid number of arguments.\n") +

                                         "    Expecting two arguments, a number and some Tcl code.");

        } else if (!Cdl::string_to_integer(argv[data_index], number)) {

            CdlParse::report_property_parse_error(interp, argv[0], std::string(argv[data_index]) + " is not a valid number.");

        } else if (!Tcl_CommandComplete(CDL_TCL_CONST_CAST(char*, argv[data_index + 1]))) {

            CdlParse::report_property_parse_error(interp, argv[0], "incomplete Tcl code fragment.");

        } else {

            CdlNode current_node = interp->get_node();

            CYG_ASSERTC(0 != current_node);

            new_property = CdlProperty_TclCodeBody::make(current_node, CdlPropertyId_Screen, number, argv[data_index + 1],

                                                         argc, argv, options);

        }

    } catch(...) {

        if (0 != new_property) {

            delete new_property;

        }

        throw;

    }

    return TCL_OK;

}

//}}}

//{{{  Persistence                      

// ----------------------------------------------------------------------------

// For now there is no information in a wizard that should end up in a

// save file, but it is still desirable to override the base class

// member function.

void

CdlWizardBody::save(CdlInterpreter interp, Tcl_Channel chan, int indentation, bool minimal)

{

    CYG_REPORT_FUNCNAME("CdlWizard::save");

    CYG_REPORT_FUNCARG5XV(this, interp, chan, indentation, minimal);

    CYG_PRECONDITION_THISC();

    CYG_UNUSED_PARAM(CdlInterpreter, interp);

    CYG_UNUSED_PARAM(Tcl_Channel, chan);

    CYG_UNUSED_PARAM(int, indentation);

    CYG_UNUSED_PARAM(bool, minimal);

    CYG_REPORT_RETURN();

}

//}}}

//{{{  Data access                      

// ----------------------------------------------------------------------------

bool

CdlWizardBody::has_init_proc() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlWizard::has_init_proc", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = has_property(CdlPropertyId_InitProc);

    CYG_REPORT_RETVAL(result);

    return result;

}

bool

CdlWizardBody::has_decoration_proc() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlWizard::has_decoration_proc", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = has_property(CdlPropertyId_DecorationProc);

    CYG_REPORT_RETVAL(result);

    return result;

}

bool

CdlWizardBody::has_screen(cdl_int screen) const

{

    CYG_REPORT_FUNCNAMETYPE("CdlWizard::has_screen", "result %d");

    CYG_REPORT_FUNCARG2XV(this, (int) screen);

    CYG_PRECONDITION_THISC();

    bool result = false;

    const std::vector<CdlProperty>& properties = get_properties();

    std::vector<CdlProperty>::const_iterator prop_i;

    for (prop_i = properties.begin(); prop_i != properties.end(); prop_i++) {

        if (CdlPropertyId_Screen != (*prop_i)->get_property_name()) {

            continue;

        }

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(*prop_i);

        CYG_ASSERT_CLASSC(tclprop);

        if (screen == tclprop->get_number()) {

            result = true;

            break;

        }

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_init_proc() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_init_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    static cdl_tcl_code null_result = "";

    cdl_tcl_code& result = null_result;

    CdlProperty prop = get_property(CdlPropertyId_InitProc);

    if (0 != prop) {

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

        CYG_ASSERT_CLASSC(tclprop);

        result = tclprop->get_code();

    }

    CYG_REPORT_RETURN();

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_decoration_proc() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_decoration_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    static cdl_tcl_code null_result = "";

    cdl_tcl_code& result = null_result;

    CdlProperty prop = get_property(CdlPropertyId_DecorationProc);

    if (0 != prop) {

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

        CYG_ASSERT_CLASSC(tclprop);

        result = tclprop->get_code();

    }

    CYG_REPORT_RETURN();

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_confirm_proc() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_display_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    CdlProperty prop = get_property(CdlPropertyId_ConfirmProc);

    CYG_ASSERT_CLASSC(prop);

    CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

    CYG_ASSERT_CLASSC(tclprop);

    const cdl_tcl_code& result = tclprop->get_code();

    CYG_REPORT_RETURN();

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_cancel_proc() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_display_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    CdlProperty prop = get_property(CdlPropertyId_CancelProc);

    CYG_ASSERT_CLASSC(prop);

    CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

    CYG_ASSERT_CLASSC(tclprop);

    const cdl_tcl_code& result = tclprop->get_code();

    CYG_REPORT_RETURN();

    return result;

}

cdl_int

CdlWizardBody::get_first_screen_number() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlWizard::get_first_screen_number", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    // The result should really be initialized to MININT, but that is

    // slightly tricky given that we are dealing with cdl_int's rather

    // than plain int's. Instead a separate flag gives the same

    // effect.

    bool        result_set = false;

    cdl_int     result = -1;

    const std::vector<CdlProperty>& properties = get_properties();

    std::vector<CdlProperty>::const_iterator prop_i;

    for (prop_i = properties.begin(); prop_i != properties.end(); prop_i++) {

        if (CdlPropertyId_Screen != (*prop_i)->get_property_name()) {

            continue;

        }

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(*prop_i);

        cdl_int its_num = tclprop->get_number();

        if (!result_set || (its_num < result)) {

            result = its_num;

            result_set = true;

        }

    }

    CYG_REPORT_RETVAL((int) result);

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_first_screen() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_first_screen");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    // The result should really be initialized to MININT, but that is

    // slightly tricky given that we are dealing with cdl_int's rather

    // than plain int's. Instead a separate flag gives the same

    // effect.

    static cdl_tcl_code null_result     = "";

    bool                result_set      = false;

    cdl_tcl_code&       result          = null_result;

    cdl_int             result_num      = -1;

    const std::vector<CdlProperty>& properties = get_properties();

    std::vector<CdlProperty>::const_iterator prop_i;

    for (prop_i = properties.begin(); prop_i != properties.end(); prop_i++) {

        if (CdlPropertyId_Screen != (*prop_i)->get_property_name()) {

            continue;

        }

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(*prop_i);

        cdl_int its_num = tclprop->get_number();

        if (!result_set || (its_num < result_num)) {

            result     = tclprop->get_code();

            result_num = its_num;

            result_set = true;

        }

    }

    CYG_REPORT_RETURN();

    return result;

}

const cdl_tcl_code&

CdlWizardBody::get_screen(cdl_int screen) const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_screen");

    CYG_REPORT_FUNCARG2XV(this, (int)screen);

    CYG_PRECONDITION_THISC();

    static cdl_tcl_code null_result     = "";

    cdl_tcl_code&       result          = null_result;

    const std::vector<CdlProperty>& properties = get_properties();

    std::vector<CdlProperty>::const_iterator prop_i;

    for (prop_i = properties.begin(); prop_i != properties.end(); prop_i++) {

        if (CdlPropertyId_Screen != (*prop_i)->get_property_name()) {

            continue;

        }

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(*prop_i);

        if (tclprop->get_number() == screen) {

            result     = tclprop->get_code();

            break;

        }

    }

    CYG_REPORT_RETURN();

    return result;

}

//}}}

//{{{  check_this()                     

// ----------------------------------------------------------------------------

// check_this(). There is very little data associated with a wizard,

// most of the checks happen in the base classes.

bool

CdlWizardBody::check_this(cyg_assert_class_zeal zeal) const

{

    if (CdlWizardBody_Magic != cdlwizardbody_cookie) {

        return false;

    }

    CYGDBG_MEMLEAK_CHECKTHIS();

    return CdlUserVisibleBody::check_this(zeal);

}

//}}}

//{{{  misc                             

// ----------------------------------------------------------------------------

std::string

CdlWizardBody::get_class_name() const

{

    CYG_REPORT_FUNCNAME("CdlWizard::get_class_name");

    CYG_PRECONDITION_THISC();

    CYG_REPORT_RETURN();

    return "wizard";

}

//}}}