/////////////////////////////////////////////////////////////////////////////
// Name: src/generic/logg.cpp
// Purpose: wxLog-derived classes which need GUI support (the rest is in
// src/common/log.cpp)
// Author: Vadim Zeitlin
// Modified by:
// Created: 20.09.99 (extracted from src/common/log.cpp)
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/button.h"
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/menu.h"
#include "wx/frame.h"
#include "wx/filedlg.h"
#include "wx/msgdlg.h"
#include "wx/textctrl.h"
#include "wx/sizer.h"
#include "wx/statbmp.h"
#include "wx/settings.h"
#include "wx/wxcrtvararg.h"
#endif // WX_PRECOMP
#if wxUSE_LOGGUI || wxUSE_LOGWINDOW
#include "wx/file.h"
#include "wx/clipbrd.h"
#include "wx/dataobj.h"
#include "wx/textfile.h"
#include "wx/statline.h"
#include "wx/artprov.h"
#include "wx/collpane.h"
#include "wx/arrstr.h"
#include "wx/msgout.h"
#include "wx/scopeguard.h"
#ifdef __WXMSW__
// for OutputDebugString()
#include "wx/msw/private.h"
#endif // Windows
#if wxUSE_LOG_DIALOG
#include "wx/listctrl.h"
#include "wx/imaglist.h"
#include "wx/image.h"
#endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
#include "wx/time.h"
#define CAN_SAVE_FILES (wxUSE_FILE && wxUSE_FILEDLG)
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
#if wxUSE_LOG_DIALOG
// this function is a wrapper around strftime(3)
// allows to exclude the usage of wxDateTime
static wxString TimeStamp(const wxString& format, time_t t)
{
wxChar buf[4096];
struct tm tm;
if ( !wxStrftime(buf, WXSIZEOF(buf), format, wxLocaltime_r(&t, &tm)) )
{
// buffer is too small?
wxFAIL_MSG(wxT("strftime() failed"));
}
return wxString(buf);
}
class wxLogDialog : public wxDialog
{
public:
wxLogDialog(wxWindow *parent,
const wxArrayString& messages,
const wxArrayInt& severity,
const wxArrayLong& timess,
const wxString& caption,
long style);
virtual ~wxLogDialog();
// event handlers
void OnOk(wxCommandEvent& event);
#if wxUSE_CLIPBOARD
void OnCopy(wxCommandEvent& event);
#endif // wxUSE_CLIPBOARD
#if CAN_SAVE_FILES
void OnSave(wxCommandEvent& event);
#endif // CAN_SAVE_FILES
void OnListItemActivated(wxListEvent& event);
private:
// create controls needed for the details display
void CreateDetailsControls(wxWindow *);
// if necessary truncates the given string and adds an ellipsis
wxString EllipsizeString(const wxString &text)
{
if (ms_maxLength > 0 &&
text.length() > ms_maxLength)
{
wxString ret(text);
ret.Truncate(ms_maxLength);
ret << "...";
return ret;
}
return text;
}
#if CAN_SAVE_FILES || wxUSE_CLIPBOARD
// return the contents of the dialog as a multiline string
wxString GetLogMessages() const;
#endif // CAN_SAVE_FILES || wxUSE_CLIPBOARD
// the data for the listctrl
wxArrayString m_messages;
wxArrayInt m_severity;
wxArrayLong m_times;
// the controls which are not shown initially (but only when details
// button is pressed)
wxListCtrl *m_listctrl;
// the translated "Details" string
static wxString ms_details;
// the maximum length of the log message
static size_t ms_maxLength;
wxDECLARE_EVENT_TABLE();
wxDECLARE_NO_COPY_CLASS(wxLogDialog);
};
wxBEGIN_EVENT_TABLE(wxLogDialog, wxDialog)
EVT_BUTTON(wxID_OK, wxLogDialog::OnOk)
#if wxUSE_CLIPBOARD
EVT_BUTTON(wxID_COPY, wxLogDialog::OnCopy)
#endif // wxUSE_CLIPBOARD
#if CAN_SAVE_FILES
EVT_BUTTON(wxID_SAVE, wxLogDialog::OnSave)
#endif // CAN_SAVE_FILES
EVT_LIST_ITEM_ACTIVATED(wxID_ANY, wxLogDialog::OnListItemActivated)
wxEND_EVENT_TABLE()
#endif // wxUSE_LOG_DIALOG
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
#if CAN_SAVE_FILES
// pass an uninitialized file object, the function will ask the user for the
// filename and try to open it, returns true on success (file was opened),
// false if file couldn't be opened/created and -1 if the file selection
// dialog was cancelled
static int OpenLogFile(wxFile& file, wxString *filename = NULL, wxWindow *parent = NULL);
#endif // CAN_SAVE_FILES
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxLogGui implementation (FIXME MT-unsafe)
// ----------------------------------------------------------------------------
#if wxUSE_LOGGUI
wxLogGui::wxLogGui()
{
Clear();
}
void wxLogGui::Clear()
{
m_bErrors =
m_bWarnings =
m_bHasMessages = false;
m_aMessages.Empty();
m_aSeverity.Empty();
m_aTimes.Empty();
}
int wxLogGui::GetSeverityIcon() const
{
return m_bErrors ? wxICON_STOP
: m_bWarnings ? wxICON_EXCLAMATION
: wxICON_INFORMATION;
}
wxString wxLogGui::GetTitle() const
{
wxString titleFormat;
switch ( GetSeverityIcon() )
{
case wxICON_STOP:
titleFormat = _("%s Error");
break;
case wxICON_EXCLAMATION:
titleFormat = _("%s Warning");
break;
default:
wxFAIL_MSG( "unexpected icon severity" );
wxFALLTHROUGH;
case wxICON_INFORMATION:
titleFormat = _("%s Information");
}
return wxString::Format(titleFormat, wxTheApp->GetAppDisplayName());
}
void
wxLogGui::DoShowSingleLogMessage(const wxString& message,
const wxString& title,
int style)
{
wxMessageBox(message, title, wxOK | style);
}
void
wxLogGui::DoShowMultipleLogMessages(const wxArrayString& messages,
const wxArrayInt& severities,
const wxArrayLong& times,
const wxString& title,
int style)
{
#if wxUSE_LOG_DIALOG
wxLogDialog dlg(NULL,
messages, severities, times,
title, style);
// clear the message list before showing the dialog because while it's
// shown some new messages may appear
Clear();
(void)dlg.ShowModal();
#else // !wxUSE_LOG_DIALOG
// start from the most recent message
wxString message;
const size_t nMsgCount = messages.size();
message.reserve(nMsgCount*100);
for ( size_t n = nMsgCount; n > 0; n-- ) {
message << m_aMessages[n - 1] << wxT("\n");
}
DoShowSingleLogMessage(message, title, style);
#endif // wxUSE_LOG_DIALOG/!wxUSE_LOG_DIALOG
}
void wxLogGui::Flush()
{
wxLog::Flush();
if ( !m_bHasMessages )
return;
// do it right now to block any new calls to Flush() while we're here
m_bHasMessages = false;
// note that this must be done before examining m_aMessages as it may log
// yet another message
const unsigned repeatCount = LogLastRepeatIfNeeded();
const size_t nMsgCount = m_aMessages.size();
if ( repeatCount > 0 )
{
m_aMessages[nMsgCount - 1] << " (" << m_aMessages[nMsgCount - 2] << ")";
}
const wxString title = GetTitle();
const int style = GetSeverityIcon();
// avoid showing other log dialogs until we're done with the dialog we're
// showing right now: nested modal dialogs make for really bad UI!
Suspend();
// and ensure that we allow showing the log again afterwards, even if an
// exception is thrown
wxON_BLOCK_EXIT0(wxLog::Resume);
if ( nMsgCount == 1 )
{
// make a copy before calling Clear()
const wxString message(m_aMessages[0]);
Clear();
DoShowSingleLogMessage(message, title, style);
}
else // more than one message
{
wxArrayString messages;
wxArrayInt severities;
wxArrayLong times;
messages.swap(m_aMessages);
severities.swap(m_aSeverity);
times.swap(m_aTimes);
Clear();
DoShowMultipleLogMessages(messages, severities, times, title, style);
}
}
// log all kinds of messages
void wxLogGui::DoLogRecord(wxLogLevel level,
const wxString& msg,
const wxLogRecordInfo& info)
{
switch ( level )
{
case wxLOG_Info:
case wxLOG_Message:
{
m_aMessages.Add(msg);
m_aSeverity.Add(wxLOG_Message);
m_aTimes.Add((long)info.timestamp);
m_bHasMessages = true;
}
break;
case wxLOG_Status:
#if wxUSE_STATUSBAR
{
wxFrame *pFrame = NULL;
// check if the frame was passed to us explicitly
wxUIntPtr ptr = 0;
if ( info.GetNumValue(wxLOG_KEY_FRAME, &ptr) )
{
pFrame = static_cast<wxFrame *>(wxUIntToPtr(ptr));
}
// find the top window and set it's status text if it has any
if ( pFrame == NULL ) {
wxWindow *pWin = wxTheApp->GetTopWindow();
if ( wxDynamicCast(pWin, wxFrame) ) {
pFrame = (wxFrame *)pWin;
}
}
if ( pFrame && pFrame->GetStatusBar() )
pFrame->SetStatusText(msg);
}
#endif // wxUSE_STATUSBAR
break;
case wxLOG_Error:
if ( !m_bErrors ) {
#if !wxUSE_LOG_DIALOG
// discard earlier informational messages if this is the 1st
// error because they might not make sense any more and showing
// them in a message box might be confusing
m_aMessages.Empty();
m_aSeverity.Empty();
m_aTimes.Empty();
#endif // wxUSE_LOG_DIALOG
m_bErrors = true;
}
wxFALLTHROUGH;
case wxLOG_Warning:
if ( !m_bErrors ) {
// for the warning we don't discard the info messages
m_bWarnings = true;
}
m_aMessages.Add(msg);
m_aSeverity.Add((int)level);
m_aTimes.Add((long)info.timestamp);
m_bHasMessages = true;
break;
case wxLOG_Debug:
case wxLOG_Trace:
// let the base class deal with debug/trace messages
wxLog::DoLogRecord(level, msg, info);
break;
case wxLOG_FatalError:
case wxLOG_Max:
// fatal errors are shown immediately and terminate the program so
// we should never see them here
wxFAIL_MSG("unexpected log level");
break;
case wxLOG_Progress:
case wxLOG_User:
// just ignore those: passing them to the base class would result
// in asserts from DoLogText() because DoLogTextAtLevel() would
// call it as it doesn't know how to handle these levels otherwise
break;
}
}
#endif // wxUSE_LOGGUI
// ----------------------------------------------------------------------------
// wxLogWindow and wxLogFrame implementation
// ----------------------------------------------------------------------------
#if wxUSE_LOGWINDOW
// log frame class
// ---------------
class wxLogFrame : public wxFrame
{
public:
// ctor & dtor
wxLogFrame(wxWindow *pParent, wxLogWindow *log, const wxString& szTitle);
virtual ~wxLogFrame();
// Don't prevent the application from exiting if just this frame remains.
virtual bool ShouldPreventAppExit() const wxOVERRIDE { return false; }
// menu callbacks
void OnClose(wxCommandEvent& event);
void OnCloseWindow(wxCloseEvent& event);
#if CAN_SAVE_FILES
void OnSave(wxCommandEvent& event);
#endif // CAN_SAVE_FILES
void OnClear(wxCommandEvent& event);
// do show the message in the text control
void ShowLogMessage(const wxString& message)
{
m_pTextCtrl->AppendText(message + wxS('\n'));
}
private:
// use standard ids for our commands!
enum
{
Menu_Close = wxID_CLOSE,
Menu_Save = wxID_SAVE,
Menu_Clear = wxID_CLEAR
};
// common part of OnClose() and OnCloseWindow()
void DoClose();
wxTextCtrl *m_pTextCtrl;
wxLogWindow *m_log;
wxDECLARE_EVENT_TABLE();
wxDECLARE_NO_COPY_CLASS(wxLogFrame);
};
wxBEGIN_EVENT_TABLE(wxLogFrame, wxFrame)
// wxLogWindow menu events
EVT_MENU(Menu_Close, wxLogFrame::OnClose)
#if CAN_SAVE_FILES
EVT_MENU(Menu_Save, wxLogFrame::OnSave)
#endif // CAN_SAVE_FILES
EVT_MENU(Menu_Clear, wxLogFrame::OnClear)
EVT_CLOSE(wxLogFrame::OnCloseWindow)
wxEND_EVENT_TABLE()
wxLogFrame::wxLogFrame(wxWindow *pParent, wxLogWindow *log, const wxString& szTitle)
: wxFrame(pParent, wxID_ANY, szTitle)
{
m_log = log;
m_pTextCtrl = new wxTextCtrl(this, wxID_ANY, wxEmptyString, wxDefaultPosition,
wxDefaultSize,
wxTE_MULTILINE |
wxHSCROLL |
// needed for Win32 to avoid 65Kb limit but it doesn't work well
// when using RichEdit 2.0 which we always do in the Unicode build
#if !wxUSE_UNICODE
wxTE_RICH |
#endif // !wxUSE_UNICODE
wxTE_READONLY);
#if wxUSE_MENUS
// create menu
wxMenuBar *pMenuBar = new wxMenuBar;
wxMenu *pMenu = new wxMenu;
#if CAN_SAVE_FILES
pMenu->Append(Menu_Save, _("Save &As..."), _("Save log contents to file"));
#endif // CAN_SAVE_FILES
pMenu->Append(Menu_Clear, _("C&lear"), _("Clear the log contents"));
pMenu->AppendSeparator();
pMenu->Append(Menu_Close, _("&Close"), _("Close this window"));
pMenuBar->Append(pMenu, _("&Log"));
SetMenuBar(pMenuBar);
#endif // wxUSE_MENUS
#if wxUSE_STATUSBAR
// status bar for menu prompts
CreateStatusBar();
#endif // wxUSE_STATUSBAR
}
void wxLogFrame::DoClose()
{
if ( m_log->OnFrameClose(this) )
{
// instead of closing just hide the window to be able to Show() it
// later
Show(false);
}
}
void wxLogFrame::OnClose(wxCommandEvent& WXUNUSED(event))
{
DoClose();
}
void wxLogFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
{
DoClose();
}
#if CAN_SAVE_FILES
void wxLogFrame::OnSave(wxCommandEvent& WXUNUSED(event))
{
wxString filename;
wxFile file;
int rc = OpenLogFile(file, &filename, this);
if ( rc == -1 )
{
// cancelled
return;
}
bool bOk = rc != 0;
// retrieve text and save it
// -------------------------
int nLines = m_pTextCtrl->GetNumberOfLines();
for ( int nLine = 0; bOk && nLine < nLines; nLine++ ) {
bOk = file.Write(m_pTextCtrl->GetLineText(nLine) +
wxTextFile::GetEOL());
}
if ( bOk )
bOk = file.Close();
if ( !bOk ) {
wxLogError(_("Can't save log contents to file."));
}
else {
wxLogStatus((wxFrame*)this, _("Log saved to the file '%s'."), filename.c_str());
}
}
#endif // CAN_SAVE_FILES
void wxLogFrame::OnClear(wxCommandEvent& WXUNUSED(event))
{
m_pTextCtrl->Clear();
}
wxLogFrame::~wxLogFrame()
{
m_log->OnFrameDelete(this);
}
// wxLogWindow
// -----------
wxLogWindow::wxLogWindow(wxWindow *pParent,
const wxString& szTitle,
bool bShow,
bool bDoPass)
{
// Initialize it to NULL to ensure that we don't crash if any log messages
// are generated before the frame is fully created (while this doesn't
// happen normally, it might, in principle).
m_pLogFrame = NULL;
PassMessages(bDoPass);
m_pLogFrame = new wxLogFrame(pParent, this, szTitle);
if ( bShow )
m_pLogFrame->Show();
}
void wxLogWindow::Show(bool bShow)
{
m_pLogFrame->Show(bShow);
}
void wxLogWindow::DoLogTextAtLevel(wxLogLevel level, const wxString& msg)
{
if ( !m_pLogFrame )
return;
// don't put trace messages in the text window for 2 reasons:
// 1) there are too many of them
// 2) they may provoke other trace messages (e.g. wxMSW code uses
// wxLogTrace to log Windows messages and adding text to the control
// sends more of them) thus sending a program into an infinite loop
if ( level == wxLOG_Trace )
return;
m_pLogFrame->ShowLogMessage(msg);
}
wxFrame *wxLogWindow::GetFrame() const
{
return m_pLogFrame;
}
bool wxLogWindow::OnFrameClose(wxFrame * WXUNUSED(frame))
{
// allow to close
return true;
}
void wxLogWindow::OnFrameDelete(wxFrame * WXUNUSED(frame))
{
m_pLogFrame = NULL;
}
wxLogWindow::~wxLogWindow()
{
// may be NULL if log frame already auto destroyed itself
delete m_pLogFrame;
}
#endif // wxUSE_LOGWINDOW
// ----------------------------------------------------------------------------
// wxLogDialog
// ----------------------------------------------------------------------------
#if wxUSE_LOG_DIALOG
wxString wxLogDialog::ms_details;
size_t wxLogDialog::ms_maxLength = 0;
wxLogDialog::wxLogDialog(wxWindow *parent,
const wxArrayString& messages,
const wxArrayInt& severity,
const wxArrayLong& times,
const wxString& caption,
long style)
: wxDialog(parent, wxID_ANY, caption,
wxDefaultPosition, wxDefaultSize,
wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
{
// init the static variables:
if ( ms_details.empty() )
{
// ensure that we won't loop here if wxGetTranslation()
// happens to pop up a Log message while translating this :-)
ms_details = wxTRANSLATE("&Details");
ms_details = wxGetTranslation(ms_details);
}
if ( ms_maxLength == 0 )
{
ms_maxLength = (2 * wxGetDisplaySize().x/3) / GetCharWidth();
}
size_t count = messages.GetCount();
m_messages.Alloc(count);
m_severity.Alloc(count);
m_times.Alloc(count);
for ( size_t n = 0; n < count; n++ )
{
m_messages.Add(messages[n]);
m_severity.Add(severity[n]);
m_times.Add(times[n]);
}
m_listctrl = NULL;
bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
// create the controls which are always shown and layout them: we use
// sizers even though our window is not resizable to calculate the size of
// the dialog properly
wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
wxBoxSizer *sizerAll = new wxBoxSizer(isPda ? wxVERTICAL : wxHORIZONTAL);
if (!isPda)
{
wxStaticBitmap *icon = new wxStaticBitmap
(
this,
wxID_ANY,
wxArtProvider::GetMessageBoxIcon(style)
);
sizerAll->Add(icon, wxSizerFlags().Centre());
}
// create the text sizer with a minimal size so that we are sure it won't be too small
wxString message = EllipsizeString(messages.Last());
wxSizer *szText = CreateTextSizer(message);
szText->SetMinSize(wxMin(300, wxGetDisplaySize().x / 3), -1);
sizerAll->Add(szText, wxSizerFlags(1).Centre().Border(wxLEFT | wxRIGHT));
wxButton *btnOk = new wxButton(this, wxID_OK);
sizerAll->Add(btnOk, wxSizerFlags().Centre());
sizerTop->Add(sizerAll, wxSizerFlags().Expand().Border());
// add the details pane
#if wxUSE_COLLPANE
wxCollapsiblePane * const
collpane = new wxCollapsiblePane(this, wxID_ANY, ms_details);
sizerTop->Add(collpane, wxSizerFlags(1).Expand().Border());
wxWindow *win = collpane->GetPane();
#else
wxPanel* win = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
wxBORDER_NONE);
#endif
wxSizer * const paneSz = new wxBoxSizer(wxVERTICAL);
CreateDetailsControls(win);
paneSz->Add(m_listctrl, wxSizerFlags(1).Expand().Border(wxTOP));
#if wxUSE_CLIPBOARD || CAN_SAVE_FILES
wxBoxSizer * const btnSizer = new wxBoxSizer(wxHORIZONTAL);
wxSizerFlags flagsBtn;
flagsBtn.Border(wxLEFT);
#if wxUSE_CLIPBOARD
btnSizer->Add(new wxButton(win, wxID_COPY), flagsBtn);
#endif // wxUSE_CLIPBOARD
#if CAN_SAVE_FILES
btnSizer->Add(new wxButton(win, wxID_SAVE), flagsBtn);
#endif // CAN_SAVE_FILES
paneSz->Add(btnSizer, wxSizerFlags().Right().Border(wxTOP|wxBOTTOM));
#endif // wxUSE_CLIPBOARD || CAN_SAVE_FILES
win->SetSizer(paneSz);
paneSz->SetSizeHints(win);
SetSizerAndFit(sizerTop);
Centre();
if (isPda)
{
// Move up the screen so that when we expand the dialog,
// there's enough space.
Move(wxPoint(GetPosition().x, GetPosition().y / 2));
}
}
void wxLogDialog::CreateDetailsControls(wxWindow *parent)
{
wxString fmt = wxLog::GetTimestamp();
bool hasTimeStamp = !fmt.IsEmpty();
// create the list ctrl now
m_listctrl = new wxListCtrl(parent, wxID_ANY,
wxDefaultPosition, wxDefaultSize,
wxBORDER_SIMPLE |
wxLC_REPORT |
wxLC_NO_HEADER |
wxLC_SINGLE_SEL);
// no need to translate these strings as they're not shown to the
// user anyhow (we use wxLC_NO_HEADER style)
m_listctrl->InsertColumn(0, wxT("Message"));
if (hasTimeStamp)
m_listctrl->InsertColumn(1, wxT("Time"));
// prepare the imagelist
static const int ICON_SIZE = 16;
wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
// order should be the same as in the switch below!
static const char* const icons[] =
{
wxART_ERROR,
wxART_WARNING,
wxART_INFORMATION
};
bool loadedIcons = true;
for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
{
wxBitmap bmp = wxArtProvider::GetBitmap(icons[icon], wxART_MESSAGE_BOX,
wxSize(ICON_SIZE, ICON_SIZE));
// This may very well fail if there are insufficient colours available.
// Degrade gracefully.
if ( !bmp.IsOk() )
{
loadedIcons = false;
break;
}
imageList->Add(bmp);
}
m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);
// fill the listctrl
size_t count = m_messages.GetCount();
for ( size_t n = 0; n < count; n++ )
{
int image;
if ( loadedIcons )
{
switch ( m_severity[n] )
{
case wxLOG_Error:
image = 0;
break;
case wxLOG_Warning:
image = 1;
break;
default:
image = 2;
}
}
else // failed to load images
{
image = -1;
}
wxString msg = m_messages[n];
msg.Replace(wxT("\n"), wxT(" "));
msg = EllipsizeString(msg);
m_listctrl->InsertItem(n, msg, image);
if (hasTimeStamp)
m_listctrl->SetItem(n, 1, TimeStamp(fmt, (time_t)m_times[n]));
}
// let the columns size themselves
m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
if (hasTimeStamp)
m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);
// calculate an approximately nice height for the listctrl
int height = GetCharHeight()*(count + 4);
// but check that the dialog won't fall fown from the screen
//
// we use GetMinHeight() to get the height of the dialog part without the
// details and we consider that the "Save" button below and the separator
// line (and the margins around it) take about as much, hence double it
int heightMax = wxGetDisplaySize().y - GetPosition().y - 2*GetMinHeight();
// we should leave a margin
heightMax *= 9;
heightMax /= 10;
m_listctrl->SetSize(wxDefaultCoord, wxMin(height, heightMax));
}
void wxLogDialog::OnListItemActivated(wxListEvent& event)
{
// show the activated item in a message box
// This allow the user to correctly display the logs which are longer
// than the listctrl and thus gets truncated or those which contains
// newlines.
// NB: don't do:
// wxString str = m_listctrl->GetItemText(event.GetIndex());
// as there's a 260 chars limit on the items inside a wxListCtrl in wxMSW.
wxString str = m_messages[event.GetIndex()];
// wxMessageBox will nicely handle the '\n' in the string (if any)
// and supports long strings
wxMessageBox(str, wxT("Log message"), wxOK, this);
}
void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
{
EndModal(wxID_OK);
}
#if CAN_SAVE_FILES || wxUSE_CLIPBOARD
wxString wxLogDialog::GetLogMessages() const
{
wxString fmt = wxLog::GetTimestamp();
if ( fmt.empty() )
{
// use the default format
fmt = "%c";
}
const size_t count = m_messages.GetCount();
wxString text;
text.reserve(count*m_messages[0].length());
for ( size_t n = 0; n < count; n++ )
{
text << TimeStamp(fmt, (time_t)m_times[n])
<< ": "
<< m_messages[n]
<< wxTextFile::GetEOL();
}
return text;
}
#endif // CAN_SAVE_FILES || wxUSE_CLIPBOARD
#if wxUSE_CLIPBOARD
void wxLogDialog::OnCopy(wxCommandEvent& WXUNUSED(event))
{
wxClipboardLocker clip;
if ( !clip ||
!wxTheClipboard->AddData(new wxTextDataObject(GetLogMessages())) )
{
wxLogError(_("Failed to copy dialog contents to the clipboard."));
}
}
#endif // wxUSE_CLIPBOARD
#if CAN_SAVE_FILES
void wxLogDialog::OnSave(wxCommandEvent& WXUNUSED(event))
{
wxFile file;
int rc = OpenLogFile(file, NULL, this);
if ( rc == -1 )
{
// cancelled
return;
}
if ( !rc || !file.Write(GetLogMessages()) || !file.Close() )
{
wxLogError(_("Can't save log contents to file."));
}
}
#endif // CAN_SAVE_FILES
wxLogDialog::~wxLogDialog()
{
if ( m_listctrl )
{
delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
}
}
#endif // wxUSE_LOG_DIALOG
#if CAN_SAVE_FILES
// pass an uninitialized file object, the function will ask the user for the
// filename and try to open it, returns true on success (file was opened),
// false if file couldn't be opened/created and -1 if the file selection
// dialog was cancelled
static int OpenLogFile(wxFile& file, wxString *pFilename, wxWindow *parent)
{
// get the file name
// -----------------
wxString filename = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"), parent);
if ( !filename ) {
// cancelled
return -1;
}
// open file
// ---------
bool bOk = true; // suppress warning about it being possible uninitialized
if ( wxFile::Exists(filename) ) {
bool bAppend = false;
wxString strMsg;
strMsg.Printf(_("Append log to file '%s' (choosing [No] will overwrite it)?"),
filename.c_str());
switch ( wxMessageBox(strMsg, _("Question"),
wxICON_QUESTION | wxYES_NO | wxCANCEL) ) {
case wxYES:
bAppend = true;
break;
case wxNO:
bAppend = false;
break;
case wxCANCEL:
return -1;
default:
wxFAIL_MSG(_("invalid message box return value"));
}
if ( bAppend ) {
bOk = file.Open(filename, wxFile::write_append);
}
else {
bOk = file.Create(filename, true /* overwrite */);
}
}
else {
bOk = file.Create(filename);
}
if ( pFilename )
*pFilename = filename;
return bOk;
}
#endif // CAN_SAVE_FILES
#endif // !(wxUSE_LOGGUI || wxUSE_LOGWINDOW)
#if wxUSE_LOG && wxUSE_TEXTCTRL
// ----------------------------------------------------------------------------
// wxLogTextCtrl implementation
// ----------------------------------------------------------------------------
wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
{
m_pTextCtrl = pTextCtrl;
}
void wxLogTextCtrl::DoLogText(const wxString& msg)
{
m_pTextCtrl->AppendText(msg + wxS('\n'));
}
#endif // wxUSE_LOG && wxUSE_TEXTCTRL
↑ V547 Expression '!filename' is always false.