diff options
Diffstat (limited to 'ncurses-5.3/c++/cursesf.cc')
| -rw-r--r-- | ncurses-5.3/c++/cursesf.cc | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/ncurses-5.3/c++/cursesf.cc b/ncurses-5.3/c++/cursesf.cc new file mode 100644 index 0000000..210cc1c --- /dev/null +++ b/ncurses-5.3/c++/cursesf.cc @@ -0,0 +1,427 @@ +// * this is for making emacs happy: -*-Mode: C++;-*- +/**************************************************************************** + * Copyright (c) 1998,2001 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Juergen Pfeifer, 1997 * + * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en * + ****************************************************************************/ + +#include "internal.h" +#include "cursesf.h" +#include "cursesapp.h" + +MODULE_ID("$Id$") + +NCursesFormField::~NCursesFormField () { + if (field) + OnError(::free_field (field)); +} + +/* Construct a FIELD* array from an array of NCursesFormField + * objects. + */ +FIELD** +NCursesForm::mapFields(NCursesFormField* nfields[]) { + int fieldCount = 0,lcv; + FIELD** old_fields; + + assert(nfields != 0); + + for (lcv=0; nfields[lcv]->field; ++lcv) + ++fieldCount; + + FIELD** fields = new FIELD*[fieldCount + 1]; + + for (lcv=0;nfields[lcv]->field;++lcv) { + fields[lcv] = nfields[lcv]->field; + } + fields[lcv] = NULL; + + my_fields = nfields; + + if (form && (old_fields = ::form_fields(form))) { + ::set_form_fields(form,(FIELD**)0); + delete[] old_fields; + } + return fields; +} + +void NCursesForm::setDefaultAttributes() { + NCursesApplication* S = NCursesApplication::getApplication(); + + int n = count(); + if (n > 0) { + for(int i=0; i<n; i++) { + NCursesFormField* f = (*this)[i]; + if ((f->options() & (O_EDIT|O_ACTIVE))==(O_EDIT|O_ACTIVE)) { + if (S) { + f->set_foreground(S->foregrounds()); + f->set_background(S->backgrounds()); + } + f->set_pad_character('_'); + } + else { + if (S) + f->set_background(S->labels()); + } + } + } + + if (S) { + bkgd(' '|S->dialog_backgrounds()); + if (sub) + sub->bkgd(' '|S->dialog_backgrounds()); + } +} + +void +NCursesForm::InitForm(NCursesFormField* nfields[], + bool with_frame, + bool autoDelete_Fields) { + int mrows, mcols; + + keypad(TRUE); + meta(TRUE); + + b_framed = with_frame; + b_autoDelete = autoDelete_Fields; + + form = (FORM*)0; + form = ::new_form(mapFields(nfields)); + if (!form) + OnError (E_SYSTEM_ERROR); + + UserHook* hook = new UserHook; + hook->m_user = NULL; + hook->m_back = this; + hook->m_owner = form; + ::set_form_userptr(form,(void*)hook); + + ::set_form_init (form, NCursesForm::frm_init); + ::set_form_term (form, NCursesForm::frm_term); + ::set_field_init (form, NCursesForm::fld_init); + ::set_field_term (form, NCursesForm::fld_term); + + scale(mrows, mcols); + ::set_form_win(form, w); + + if (with_frame) { + if ((mrows > height()-2) || (mcols > width()-2)) + OnError(E_NO_ROOM); + sub = new NCursesWindow(*this,mrows,mcols,1,1,'r'); + ::set_form_sub(form, sub->w); + b_sub_owner = TRUE; + } + else { + sub = (NCursesWindow*)0; + b_sub_owner = FALSE; + } + options_on(O_NL_OVERLOAD); + setDefaultAttributes(); +} + +NCursesForm::~NCursesForm() { + UserHook* hook = (UserHook*)::form_userptr(form); + delete hook; + if (b_sub_owner) { + delete sub; + ::set_form_sub(form,(WINDOW *)0); + } + if (form) { + FIELD** fields = ::form_fields(form); + int cnt = count(); + + OnError(::set_form_fields(form,(FIELD**)0)); + + if (b_autoDelete) { + if (cnt>0) { + for (int i=0; i <= cnt; i++) + delete my_fields[i]; + } + delete[] my_fields; + } + + ::free_form(form); + // It's essential to do this after free_form() + delete[] fields; + } +} + +void +NCursesForm::setSubWindow(NCursesWindow& nsub) { + if (!isDescendant(nsub)) + OnError(E_SYSTEM_ERROR); + else { + if (b_sub_owner) + delete sub; + sub = ⊄ + ::set_form_sub(form,sub->w); + } +} + +/* Internal hook functions. They will route the hook + * calls to virtual methods of the NCursesForm class, + * so in C++ providing a hook is done simply by + * implementing a virtual method in a derived class + */ +void +NCursesForm::frm_init(FORM *f) { + getHook(f)->On_Form_Init(); +} + +void +NCursesForm::frm_term(FORM *f) { + getHook(f)->On_Form_Termination(); +} + +void +NCursesForm::fld_init(FORM *f) { + NCursesForm* F = getHook(f); + F->On_Field_Init (*(F->current_field ())); +} + +void +NCursesForm::fld_term(FORM *f) { + NCursesForm* F = getHook(f); + F->On_Field_Termination (*(F->current_field ())); +} + +void +NCursesForm::On_Form_Init() { +} + +void +NCursesForm::On_Form_Termination() { +} + +void +NCursesForm::On_Field_Init(NCursesFormField& field) { +} + +void +NCursesForm::On_Field_Termination(NCursesFormField& field) { +} + +// call the form driver and do basic error checking. +int +NCursesForm::driver (int c) { + int res = ::form_driver (form, c); + switch (res) { + case E_OK: + case E_REQUEST_DENIED: + case E_INVALID_FIELD: + case E_UNKNOWN_COMMAND: + break; + default: + OnError (res); + } + return (res); +} + +void NCursesForm::On_Request_Denied(int c) const { + ::beep(); +} + +void NCursesForm::On_Invalid_Field(int c) const { + ::beep(); +} + +void NCursesForm::On_Unknown_Command(int c) const { + ::beep(); +} + +static const int CMD_QUIT = MAX_COMMAND + 1; + +NCursesFormField* +NCursesForm::operator()(void) { + int drvCmnd; + int err; + int c; + + post(); + show(); + refresh(); + + while (((drvCmnd = virtualize((c=getKey()))) != CMD_QUIT)) { + switch((err=driver(drvCmnd))) { + case E_REQUEST_DENIED: + On_Request_Denied(c); + break; + case E_INVALID_FIELD: + On_Invalid_Field(c); + break; + case E_UNKNOWN_COMMAND: + On_Unknown_Command(c); + break; + case E_OK: + break; + default: + OnError(err); + } + } + + unpost(); + hide(); + refresh(); + return my_fields[::field_index (::current_field (form))]; +} + +// Provide a default key virtualization. Translate the keyboard +// code c into a form request code. +// The default implementation provides a hopefully straightforward +// mapping for the most common keystrokes and form requests. +int +NCursesForm::virtualize(int c) { + switch(c) { + + case KEY_HOME : return(REQ_FIRST_FIELD); + case KEY_END : return(REQ_LAST_FIELD); + + case KEY_DOWN : return(REQ_DOWN_CHAR); + case KEY_UP : return(REQ_UP_CHAR); + case KEY_LEFT : return(REQ_PREV_CHAR); + case KEY_RIGHT : return(REQ_NEXT_CHAR); + + case KEY_NPAGE : return(REQ_NEXT_PAGE); + case KEY_PPAGE : return(REQ_PREV_PAGE); + + case KEY_BACKSPACE : return(REQ_DEL_PREV); + case KEY_ENTER : return(REQ_NEW_LINE); + case KEY_CLEAR : return(REQ_CLR_FIELD); + + case CTRL('X') : return(CMD_QUIT); // eXit + + case CTRL('F') : return(REQ_NEXT_FIELD); // Forward + case CTRL('B') : return(REQ_PREV_FIELD); // Backward + case CTRL('L') : return(REQ_LEFT_FIELD); // Left + case CTRL('R') : return(REQ_RIGHT_FIELD); // Right + case CTRL('U') : return(REQ_UP_FIELD); // Up + case CTRL('D') : return(REQ_DOWN_FIELD); // Down + + case CTRL('W') : return(REQ_NEXT_WORD); + case CTRL('T') : return(REQ_PREV_WORD); + + case CTRL('A') : return(REQ_BEG_FIELD); + case CTRL('E') : return(REQ_END_FIELD); + + case CTRL('I') : return(REQ_INS_CHAR); + case CTRL('M') : + case CTRL('J') : return(REQ_NEW_LINE); + case CTRL('O') : return(REQ_INS_LINE); + case CTRL('V') : return(REQ_DEL_CHAR); + case CTRL('H') : return(REQ_DEL_PREV); + case CTRL('Y') : return(REQ_DEL_LINE); + case CTRL('G') : return(REQ_DEL_WORD); + case CTRL('K') : return(REQ_CLR_EOF); + + case CTRL('N') : return(REQ_NEXT_CHOICE); + case CTRL('P') : return(REQ_PREV_CHOICE); + + default: + return(c); + } +} +// +// ------------------------------------------------------------------------- +// User Defined Fieldtypes +// ------------------------------------------------------------------------- +// +bool UserDefinedFieldType::fcheck(FIELD *f, const void *u) { + NCursesFormField* F = (NCursesFormField*)u; + assert(F != 0); + UserDefinedFieldType* udf = (UserDefinedFieldType*)(F->fieldtype()); + assert(udf != 0); + return udf->field_check(*F); +} + +bool UserDefinedFieldType::ccheck(int c, const void *u) { + NCursesFormField* F = (NCursesFormField*)u; + assert(F != 0); + UserDefinedFieldType* udf = + (UserDefinedFieldType*)(F->fieldtype()); + assert(udf != 0); + return udf->char_check(c); +} + +void* UserDefinedFieldType::makearg(va_list* va) { + return va_arg(*va,NCursesFormField*); +} + +FIELDTYPE* UserDefinedFieldType::generic_fieldtype = + ::new_fieldtype(UserDefinedFieldType::fcheck, + UserDefinedFieldType::ccheck); + +FIELDTYPE* UserDefinedFieldType_With_Choice::generic_fieldtype_with_choice = + ::new_fieldtype(UserDefinedFieldType::fcheck, + UserDefinedFieldType::ccheck); + +bool UserDefinedFieldType_With_Choice::next_choice(FIELD *f, const void *u) { + NCursesFormField* F = (NCursesFormField*)u; + assert(F != 0); + UserDefinedFieldType_With_Choice* udf = + (UserDefinedFieldType_With_Choice*)(F->fieldtype()); + assert(udf != 0); + return udf->next(*F); +} + +bool UserDefinedFieldType_With_Choice::prev_choice(FIELD *f, const void *u) { + NCursesFormField* F = (NCursesFormField*)u; + assert(F != 0); + UserDefinedFieldType_With_Choice* udf = + (UserDefinedFieldType_With_Choice*)(F->fieldtype()); + assert(udf != 0); + return udf->previous(*F); +} + +class UDF_Init { +private: + int code; + static UDF_Init* I; +public: + UDF_Init() { + code = ::set_fieldtype_arg(UserDefinedFieldType::generic_fieldtype, + UserDefinedFieldType::makearg, + NULL, + NULL); + if (code==E_OK) + code = ::set_fieldtype_arg + (UserDefinedFieldType_With_Choice::generic_fieldtype_with_choice, + UserDefinedFieldType::makearg, + NULL, + NULL); + if (code==E_OK) + code = ::set_fieldtype_choice + (UserDefinedFieldType_With_Choice::generic_fieldtype_with_choice, + UserDefinedFieldType_With_Choice::next_choice, + UserDefinedFieldType_With_Choice::prev_choice); + } +}; + +UDF_Init* UDF_Init::I = new UDF_Init(); + |