398 lines
11 KiB
C++
398 lines
11 KiB
C++
/*
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* This file is a part of TTCalc - a mathematical calculator
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* and is distributed under the (new) BSD licence.
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* Author: Tomasz Sowa <t.sowa@slimaczek.pl>
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*/
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/*
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* Copyright (c) 2006-2009, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name Tomasz Sowa nor the names of contributors to this
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* project may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "compileconfig.h"
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#include "tabs.h"
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namespace TabWindowFunctions
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{
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namespace Variables
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{
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std::string caption,name,value;
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bool adding;
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/*!
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this function changes the whole string into a string consists of small letters
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(it returns the same pointer)
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*/
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char * ChangeToSmallLetters(char * string)
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{
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for( char * p = string ; *p>='A' && *p<='Z' ; ++p )
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*p = *p - 'A' + 'a';
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return string;
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}
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/*!
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this function deletes white characters at the beginning and at the end of a string
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it doesn't actually erase them but returns the pointer at the first
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non-white character and sets '\0' before the last white character
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*/
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char * StripWhiteCharacters(char * string)
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{
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char * start, * end;
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IniParser::CheckWhiteCharacters(string, (const char**)&start, (const char**)&end);
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*end = 0;
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return start;
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}
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BOOL CALLBACK DialogProcVariables(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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static const int temporary_buffer_size = 200;
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char * pchar;
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switch(message)
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{
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case WM_INITDIALOG:
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SetWindowText(hWnd, caption.c_str());
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SetDlgItemText(hWnd, IDC_STATIC_VARIABLE_NAME, GetPrgRes()->GetLanguages()->GuiMessage(Languages::list_variables_header_1));
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SetDlgItemText(hWnd, IDC_STATIC_VARIABLE_VALUE, GetPrgRes()->GetLanguages()->GuiMessage(Languages::list_variables_header_2));
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SetDlgItemText(hWnd, IDOK, GetPrgRes()->GetLanguages()->GuiMessage(Languages::button_ok));
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SetDlgItemText(hWnd, IDCANCEL,GetPrgRes()->GetLanguages()->GuiMessage(Languages::button_cancel));
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SetDlgItemText(hWnd,IDC_EDIT_VARIABLE_NAME, name.c_str());
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SetDlgItemText(hWnd,IDC_EDIT_VARIABLE_VALUE, value.c_str());
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if( adding)
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SetFocus(GetDlgItem(hWnd,IDC_EDIT_VARIABLE_NAME));
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else
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SetFocus(GetDlgItem(hWnd,IDC_EDIT_VARIABLE_VALUE));
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return false;
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case WM_COMMAND:
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if( LOWORD(wParam) == IDOK )
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{
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pchar = new char[temporary_buffer_size];
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GetDlgItemText(hWnd, IDC_EDIT_VARIABLE_NAME, pchar, temporary_buffer_size);
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name = StripWhiteCharacters(pchar);
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GetDlgItemText(hWnd, IDC_EDIT_VARIABLE_VALUE, pchar, temporary_buffer_size);
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value = StripWhiteCharacters(pchar);
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delete [] pchar;
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EndDialog(hWnd,1);
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}
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else
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if( LOWORD(wParam) == IDCANCEL )
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{
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EndDialog(hWnd,0);
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return true;
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}
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break;
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}
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return false;
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}
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void ShowError(HWND hWnd, ttmath::ErrorCode error)
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{
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const char * message;
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switch( error )
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{
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case ttmath::err_object_exists:
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message = GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_add_variable_variable_exists);
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break;
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case ttmath::err_incorrect_name:
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message = GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_add_variable_incorrect_name);
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break;
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case ttmath::err_unknown_object:
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message = GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_edit_variable_unknown_variable);
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break;
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default:
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message = GetPrgRes()->GetLanguages()->GuiMessage(Languages::unknown_error);
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break;
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}
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MessageBox( hWnd, message,
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GetPrgRes()->GetLanguages()->GuiMessage(Languages::message_box_caption),
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MB_ICONERROR);
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}
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int AddNewItemToVariableList(HWND list, const std::string & name, const std::string & value)
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{
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LVITEM item;
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item.mask = LVIF_TEXT;
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item.pszText = const_cast<char*>( name.c_str() );
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item.iSubItem = 0;
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int id = ListView_InsertItem(list, &item);
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ListView_SetItemText(list,id,1,const_cast<char*>( value.c_str() ));
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return id;
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}
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void ChangeItemInVariableList(HWND list, int id, const std::string & old_name,
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const std::string & new_name, const std::string & value)
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{
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if( old_name != new_name )
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{
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ListView_DeleteItem(list, id);
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// as we're using ListView_DeleteItem here the WM_NOTIFY is generated
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// and system will call SetDisablingEditDeleteVariableButtons
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// and eventually the focus will be changed into the 'add' button
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// (it's a small inconvenience)
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int new_id = AddNewItemToVariableList(list, new_name, value);
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ListView_SetItemState(list, new_id, LVIS_FOCUSED|LVIS_SELECTED,LVIS_FOCUSED|LVIS_SELECTED);
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}
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else
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{
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ListView_SetItemText(list,id,1,const_cast<char*>( value.c_str() ));
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}
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}
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/*!
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this functions returns the first item which is selected on a given list
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we don't use ListView_GetSelectionMark because it sometimes returns
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a wrong value especially when we have set an item as to be focused
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on the list ourselves
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*/
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int GetSelectedItem(HWND list)
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{
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int id;
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int len = ListView_GetItemCount(list);
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for(id = 0 ; id<len ; ++id)
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if( ListView_GetItemState(list, id, LVIS_SELECTED) == LVIS_SELECTED )
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return id;
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return -1;
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}
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/*!
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this function removes the selection from all items
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and sets the selection only on to the one given
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*/
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void SelectOnlyOneItem(HWND list, int id)
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{
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int len = ListView_GetItemCount(list);
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for(int i = 0 ; i<len ; ++i)
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ListView_SetItemState(list, i, 0, LVIS_FOCUSED|LVIS_SELECTED);
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ListView_SetItemState(list, id, LVIS_FOCUSED|LVIS_SELECTED, LVIS_FOCUSED|LVIS_SELECTED);
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}
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BOOL WmTabCommand_AddVariable(HWND, UINT message, WPARAM wParam, LPARAM lParam)
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{
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HWND hWnd = GetPrgRes()->GetTabWindow(TabWindowFunctions::tab_variables);
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caption = GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_add_variable_caption);
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name = "";
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value = "";
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ttmath::ErrorCode code;
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adding = true;
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do
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{
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if( !DialogBox(GetPrgRes()->GetInstance(), MAKEINTRESOURCE(IDD_DIALOG_ADD_VARIABLE), hWnd, DialogProcVariables) )
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break;
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HWND list = GetDlgItem(hWnd, IDC_VARIABLES_LIST);
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GetPrgRes()->GetThreadController()->StopCalculating();
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code = GetPrgRes()->GetVariables()->Add(name, value);
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GetPrgRes()->VariablesChanged();
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GetPrgRes()->GetThreadController()->StartCalculating();
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if( code != ttmath::err_ok )
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ShowError(hWnd, code);
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else
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{
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int id = AddNewItemToVariableList(list, name, value);
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SelectOnlyOneItem(list,id);
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}
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}
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while( code != ttmath::err_ok );
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return true;
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}
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/*!
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(we're also using this method directly without using the main loop of messages)
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(we don't define the 'lParam' parameter there)
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*/
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BOOL WmTabCommand_EditVariable(HWND, UINT message, WPARAM wParam, LPARAM)
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{
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HWND hWnd = GetPrgRes()->GetTabWindow(TabWindowFunctions::tab_variables);
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HWND list = GetDlgItem(hWnd, IDC_VARIABLES_LIST);
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adding = false;
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if( ListView_GetSelectedCount(list) != 1 )
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// there must be only one item selected
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return true;
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int id = GetSelectedItem(list);
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if( id == -1 )
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return true;
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const int buffer_size = 300;
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char * buffer = new char[buffer_size];
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std::string old_name;
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ttmath::ErrorCode code;
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caption = GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_edit_variable_caption);
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ListView_GetItemText(list,id,0,buffer, buffer_size);
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old_name = name = buffer;
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ListView_GetItemText(list,id,1,buffer, buffer_size);
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value = buffer;
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delete [] buffer;
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do
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{
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if( !DialogBox(GetPrgRes()->GetInstance(), MAKEINTRESOURCE(IDD_DIALOG_ADD_VARIABLE), hWnd, DialogProcVariables) )
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break;
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GetPrgRes()->GetThreadController()->StopCalculating();
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// firstly we're trying to change the name
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code = GetPrgRes()->GetVariables()->EditName(old_name, name);
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if( code == ttmath::err_ok )
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// if we've changed the name then we're changing the value
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code = GetPrgRes()->GetVariables()->EditValue(name, value);
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// the code should be err_ok here
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GetPrgRes()->VariablesChanged();
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GetPrgRes()->GetThreadController()->StartCalculating();
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if( code != ttmath::err_ok )
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ShowError(list, code);
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else
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ChangeItemInVariableList(list, id, old_name, name, value);
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}
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while( code != ttmath::err_ok );
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return true;
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}
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BOOL WmTabCommand_DeleteVariable(HWND, UINT, WPARAM, LPARAM)
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{
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HWND hWnd = GetPrgRes()->GetTabWindow(TabWindowFunctions::tab_variables);
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HWND list = GetDlgItem(hWnd, IDC_VARIABLES_LIST);
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int items = ListView_GetSelectedCount(list);
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if( items == 0 )
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// there must be at least one item selected
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return true;
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if( items > 1 )
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{
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// we're showing a message to confirm deleting
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if( MessageBox( hWnd,
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GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_delete_variable_confirm),
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GetPrgRes()->GetLanguages()->GuiMessage(Languages::message_box_caption),
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MB_ICONWARNING | MB_YESNO) == IDNO )
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return true;
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}
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int id;
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const int buffer_size = 300;
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char * buffer = new char[buffer_size];
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bool all_deleted = true;
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GetPrgRes()->GetThreadController()->StopCalculating();
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for( id = ListView_GetItemCount(list)-1 ; id!=-1 ; --id )
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{
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if( ListView_GetItemState(list, id, LVIS_SELECTED) == LVIS_SELECTED )
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{
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ListView_GetItemText(list,id,0,buffer,buffer_size);
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if( GetPrgRes()->GetVariables()->Delete(buffer) != ttmath::err_ok )
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all_deleted = false;
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else
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ListView_DeleteItem(list, id);
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GetPrgRes()->VariablesChanged();
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}
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}
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GetPrgRes()->GetThreadController()->StartCalculating();
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delete [] buffer;
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if( !all_deleted )
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// there are some items which we've not deleted
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// probably an internal error
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MessageBox( hWnd,
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GetPrgRes()->GetLanguages()->GuiMessage(Languages::dialog_box_variable_not_all_deleted),
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GetPrgRes()->GetLanguages()->GuiMessage(Languages::message_box_caption),
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MB_ICONERROR);
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return true;
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}
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} // namespace
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} // namespace
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