lyx_mirror/src/filedlg.C

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// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1995 Matthias Ettrich
* Copyright 1995-2000 The LyX Team.
*
* ====================================================== */
#include <config.h>
#include <unistd.h>
#include <cstdlib>
#include <pwd.h>
#include <grp.h>
#include <cstring>
#include <map>
#include <algorithm>
using std::map;
using std::max;
using std::sort;
#include "lyx_gui_misc.h" // CancelCloseCB
#include "support/FileInfo.h"
#include "support/lyxlib.h"
#include "gettext.h"
#include "frontends/Dialogs.h"
#ifdef HAVE_ERRNO_H
#include <cerrno>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <ctime>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <ctime>
# endif
#endif
#ifdef BROKEN_HEADERS
extern "C" int gettimeofday(struct timeval *, struct timezone *);
#endif
#ifdef __GNUG__
#pragma implementation
#endif
#include "support/filetools.h"
#include "filedlg.h"
#ifdef SIGC_CXX_NAMESPACES
using SigC::slot;
#endif
// six months, in seconds
static const long SIX_MONTH_SEC = 6L * 30L * 24L * 60L * 60L;
static const long ONE_HOUR_SEC = 60L * 60L;
// *** User cache class implementation
/// User cache class definition
class UserCache {
public:
/// seeks user name from group ID
string const & find(uid_t ID) const {
Users::const_iterator cit = users.find(ID);
if (cit == users.end()) {
add(ID);
return users[ID];
}
return (*cit).second;
}
private:
///
void add(uid_t ID) const;
///
typedef map<uid_t, string> Users;
///
mutable Users users;
};
void UserCache::add(uid_t ID) const
{
string pszNewName;
struct passwd * pEntry;
// gets user name
if ((pEntry = getpwuid(ID)))
pszNewName = pEntry->pw_name;
else {
pszNewName = tostr(ID);
}
// adds new node
users[ID] = pszNewName;
}
/// Group cache class definition
class GroupCache {
public:
/// seeks group name from group ID
string const & find(gid_t ID) const ;
private:
///
void add(gid_t ID) const;
///
typedef map<gid_t, string> Groups;
///
mutable Groups groups;
};
string const & GroupCache::find(gid_t ID) const
{
Groups::const_iterator cit = groups.find(ID);
if (cit == groups.end()) {
add(ID);
return groups[ID];
}
return (*cit).second;
}
void GroupCache::add(gid_t ID) const
{
string pszNewName;
struct group * pEntry;
// gets user name
if ((pEntry = getgrgid(ID))) pszNewName = pEntry->gr_name;
else {
pszNewName = tostr(ID);
}
// adds new node
groups[ID] = pszNewName;
}
// static instances
static UserCache lyxUserCache;
static GroupCache lyxGroupCache;
// some "C" wrappers around callbacks
extern "C" void C_LyXFileDlg_FileDlgCB(FL_OBJECT *, long lArgument);
extern "C" void C_LyXFileDlg_DoubleClickCB(FL_OBJECT *, long);
extern "C" int C_LyXFileDlg_CancelCB(FL_FORM *, void *);
// compares two LyXDirEntry objects content (used for sort)
class comp_direntry {
public:
int operator()(LyXDirEntry const & r1,
LyXDirEntry const & r2) const ;
};
int comp_direntry::operator()(LyXDirEntry const & r1,
LyXDirEntry const & r2) const {
bool r1d = suffixIs(r1.pszName, '/');
bool r2d = suffixIs(r2.pszName, '/');
if (r1d && !r2d) return 1;
if (!r1d && r2d) return 0;
return r1.pszName < r2.pszName;
}
// *** LyXFileDlg class implementation
// static members
FD_FileDlg * LyXFileDlg::pFileDlgForm = 0;
LyXFileDlg * LyXFileDlg::pCurrentDlg = 0;
// Reread: updates dialog list to match class directory
void LyXFileDlg::Reread()
{
// Opens directory
DIR * pDirectory = ::opendir(pszDirectory.c_str());
if (!pDirectory) {
WriteFSAlert(_("Warning! Couldn't open directory."),
pszDirectory);
pszDirectory = lyx::getcwd();
pDirectory = ::opendir(pszDirectory.c_str());
}
// Clear the present namelist
direntries.clear();
// Updates display
fl_hide_object(pFileDlgForm->List);
fl_clear_browser(pFileDlgForm->List);
fl_set_input(pFileDlgForm->DirBox, pszDirectory.c_str());
// Splits complete directory name into directories and compute depth
iDepth = 0;
string line, Temp;
char szMode[15];
FileInfo fileInfo;
string File = pszDirectory;
if (File != "/") {
File = split(File, Temp, '/');
}
while (!File.empty() || !Temp.empty()) {
string dline = "@b"+line + Temp + '/';
fl_add_browser_line(pFileDlgForm->List, dline.c_str());
File = split(File, Temp, '/');
line += ' ';
++iDepth;
}
// Parses all entries of the given subdirectory
time_t curTime = time(0);
rewinddir(pDirectory);
struct dirent * pDirEntry;
while ((pDirEntry = readdir(pDirectory))) {
bool isLink = false, isDir = false;
// If the pattern doesn't start with a dot, skip hidden files
if (!pszMask.empty() && pszMask[0] != '.' &&
pDirEntry->d_name[0] == '.')
continue;
// Gets filename
string fname = pDirEntry->d_name;
// Under all circumstances, "." and ".." are not wanted
if (fname == "." || fname == "..")
continue;
// gets file status
File = AddName(pszDirectory, fname);
fileInfo.newFile(File, true);
fileInfo.modeString(szMode);
unsigned int nlink = fileInfo.getNumberOfLinks();
string user = lyxUserCache.find(fileInfo.getUid());
string group = lyxGroupCache.find(fileInfo.getGid());
time_t modtime = fileInfo.getModificationTime();
string Time = ctime(&modtime);
if (curTime > fileInfo.getModificationTime() + SIX_MONTH_SEC
|| curTime < fileInfo.getModificationTime()
+ ONE_HOUR_SEC) {
// The file is fairly old or in the future. POSIX says
// the cutoff is 6 months old. Allow a 1 hour slop
// factor for what is considered "the future", to
// allow for NFS server/client clock disagreement.
// Show the year instead of the time of day.
Time.erase(10, 9);
Time.erase(15, string::npos);
} else {
Time.erase(16, string::npos);
}
string Buffer = string(szMode) + ' ' +
tostr(nlink) + ' ' +
user + ' ' +
group + ' ' +
Time.substr(4, string::npos) + ' ';
Buffer += pDirEntry->d_name;
Buffer += fileInfo.typeIndicator();
if ((isLink = fileInfo.isLink())) {
string Link;
if (LyXReadLink(File, Link)) {
Buffer += " -> ";
Buffer += Link;
// This gives the FileType of the file that
// is really pointed too after resolving all
// symlinks. This is not necessarily the same
// as the type of Link (which could again be a
// link). Is that intended?
// JV 199902
fileInfo.newFile(File);
Buffer += fileInfo.typeIndicator();
}
}
// filters files according to pattern and type
if (fileInfo.isRegular()
|| fileInfo.isChar()
|| fileInfo.isBlock()
|| fileInfo.isFifo()) {
if (!regexMatch(fname, pszMask))
continue;
} else if (!(isDir = fileInfo.isDir()))
continue;
LyXDirEntry tmp;
// Note pszLsEntry is an string!
tmp.pszLsEntry = Buffer;
// creates used name
string temp = fname;
if (isDir) temp += '/';
tmp.pszName = temp;
// creates displayed name
temp = pDirEntry->d_name;
if (isLink)
temp += '@';
else
temp += fileInfo.typeIndicator();
tmp.pszDisplayed = temp;
direntries.push_back(tmp);
}
closedir(pDirectory);
// Sort the names
sort(direntries.begin(), direntries.end(), comp_direntry());
// Add them to directory box
for (DirEntries::const_iterator cit = direntries.begin();
cit != direntries.end(); ++cit) {
string const temp = line + (*cit).pszDisplayed;
fl_add_browser_line(pFileDlgForm->List, temp.c_str());
}
fl_set_browser_topline(pFileDlgForm->List, iDepth);
fl_show_object(pFileDlgForm->List);
iLastSel = -1;
}
// SetDirectory: sets dialog current directory
void LyXFileDlg::SetDirectory(string const & Path)
{
if (!pszDirectory.empty()) {
string TempPath = ExpandPath(Path); // Expand ~/
TempPath = MakeAbsPath(TempPath, pszDirectory);
pszDirectory = MakeAbsPath(TempPath);
} else pszDirectory = MakeAbsPath(Path);
}
// SetMask: sets dialog file mask
void LyXFileDlg::SetMask(string const & NewMask)
{
pszMask = NewMask;
fl_set_input(pFileDlgForm->PatBox, pszMask.c_str());
}
// SetInfoLine: sets dialog information line
void LyXFileDlg::SetInfoLine(string const & Line)
{
pszInfoLine = Line;
fl_set_object_label(pFileDlgForm->FileInfo, pszInfoLine.c_str());
}
LyXFileDlg::LyXFileDlg()
{
pszDirectory = MakeAbsPath(string("."));
pszMask = '*';
// Creates form if necessary.
if (!pFileDlgForm) {
pFileDlgForm = create_form_FileDlg();
// Set callbacks. This means that we don't need a patch file
fl_set_object_callback(pFileDlgForm->DirBox,
C_LyXFileDlg_FileDlgCB, 0);
fl_set_object_callback(pFileDlgForm->PatBox,
C_LyXFileDlg_FileDlgCB, 1);
fl_set_object_callback(pFileDlgForm->List,
C_LyXFileDlg_FileDlgCB, 2);
fl_set_object_callback(pFileDlgForm->Filename,
C_LyXFileDlg_FileDlgCB, 3);
fl_set_object_callback(pFileDlgForm->Rescan,
C_LyXFileDlg_FileDlgCB, 10);
fl_set_object_callback(pFileDlgForm->Home,
C_LyXFileDlg_FileDlgCB, 11);
fl_set_object_callback(pFileDlgForm->User1,
C_LyXFileDlg_FileDlgCB, 12);
fl_set_object_callback(pFileDlgForm->User2,
C_LyXFileDlg_FileDlgCB, 13);
// Make sure pressing the close box doesn't crash LyX. (RvdK)
fl_set_form_atclose(pFileDlgForm->FileDlg,
C_LyXFileDlg_CancelCB, 0);
// Register doubleclick callback
fl_set_browser_dblclick_callback(pFileDlgForm->List,
C_LyXFileDlg_DoubleClickCB,
0);
}
fl_hide_object(pFileDlgForm->User1);
fl_hide_object(pFileDlgForm->User2);
r_ = Dialogs::redrawGUI.connect(slot(this, &LyXFileDlg::redraw));
}
LyXFileDlg::~LyXFileDlg()
{
r_.disconnect();
}
void LyXFileDlg::redraw()
{
if (pFileDlgForm->FileDlg && pFileDlgForm->FileDlg->visible)
fl_redraw_form(pFileDlgForm->FileDlg);
}
// SetButton: sets file selector user button action
void LyXFileDlg::SetButton(int iIndex, string const & pszName,
string const & pszPath)
{
FL_OBJECT * pObject;
string * pTemp;
if (iIndex == 0) {
pObject = pFileDlgForm->User1;
pTemp = &pszUserPath1;
} else if (iIndex == 1) {
pObject = pFileDlgForm->User2;
pTemp = &pszUserPath2;
} else return;
if (!pszName.empty() && !pszPath.empty()) {
fl_set_object_label(pObject, pszName.c_str());
fl_show_object(pObject);
*pTemp = pszPath;
} else {
fl_hide_object(pObject);
(*pTemp).erase();
}
}
// GetDirectory: gets last dialog directory
string const LyXFileDlg::GetDirectory() const
{
if (!pszDirectory.empty())
return pszDirectory;
else
return string(".");
}
// RunDialog: handle dialog during file selection
bool LyXFileDlg::RunDialog()
{
force_cancel = false;
force_ok = false;
// event loop
while(true) {
FL_OBJECT * pObject = fl_do_forms();
if (pObject == pFileDlgForm->Ready) {
if (HandleOK())
return true;
} else if (pObject == pFileDlgForm->Cancel
|| force_cancel)
return false;
else if (force_ok)
return true;
}
}
// XForms objects callback (static)
void LyXFileDlg::FileDlgCB(FL_OBJECT *, long lArgument)
{
if (!pCurrentDlg) return;
switch (lArgument) {
case 0: // get directory
pCurrentDlg->SetDirectory(fl_get_input(pFileDlgForm->DirBox));
pCurrentDlg->Reread();
break;
case 1: // get mask
pCurrentDlg->SetMask(fl_get_input(pFileDlgForm->PatBox));
pCurrentDlg->Reread();
break;
case 2: // list
pCurrentDlg->HandleListHit();
break;
case 10: // rescan
pCurrentDlg->SetDirectory(fl_get_input(pFileDlgForm->DirBox));
pCurrentDlg->SetMask(fl_get_input(pFileDlgForm->PatBox));
pCurrentDlg->Reread();
break;
case 11: // home
pCurrentDlg->SetDirectory(GetEnvPath("HOME"));
pCurrentDlg->SetMask(fl_get_input(pFileDlgForm->PatBox));
pCurrentDlg->Reread();
break;
case 12: // user button 1
if (!pCurrentDlg->pszUserPath1.empty()) {
pCurrentDlg->SetDirectory(pCurrentDlg->pszUserPath1);
pCurrentDlg->SetMask(fl_get_input(pFileDlgForm
->PatBox));
pCurrentDlg->Reread();
}
break;
case 13: // user button 2
if (!pCurrentDlg->pszUserPath2.empty()) {
pCurrentDlg->SetDirectory(pCurrentDlg->pszUserPath2);
pCurrentDlg->SetMask(fl_get_input(pFileDlgForm
->PatBox));
pCurrentDlg->Reread();
}
break;
}
}
extern "C" void C_LyXFileDlg_FileDlgCB(FL_OBJECT * ob, long data)
{
LyXFileDlg::FileDlgCB(ob, data);
}
// Handle callback from list
void LyXFileDlg::HandleListHit()
{
// set info line
int const iSelect = fl_get_browser(pFileDlgForm->List);
if (iSelect > iDepth) {
SetInfoLine(direntries[iSelect - iDepth - 1].pszLsEntry);
} else {
SetInfoLine(string());
}
}
// Callback for double click in list
void LyXFileDlg::DoubleClickCB(FL_OBJECT *, long)
{
if (pCurrentDlg->HandleDoubleClick())
// Simulate click on OK button
pCurrentDlg->Force(false);
}
extern "C" void C_LyXFileDlg_DoubleClickCB(FL_OBJECT * ob, long data)
{
LyXFileDlg::DoubleClickCB(ob, data);
}
// Handle double click from list
bool LyXFileDlg::HandleDoubleClick()
{
string pszTemp;
// set info line
bool isDir = true;
int const iSelect = fl_get_browser(pFileDlgForm->List);
if (iSelect > iDepth) {
pszTemp = direntries[iSelect - iDepth - 1].pszName;
SetInfoLine(direntries[iSelect - iDepth - 1].pszLsEntry);
if (!suffixIs(pszTemp, '/')) {
isDir = false;
fl_set_input(pFileDlgForm->Filename, pszTemp.c_str());
}
} else if (iSelect != 0) {
SetInfoLine(string());
} else
return true;
// executes action
if (isDir) {
string Temp;
// builds new directory name
if (iSelect > iDepth) {
// Directory deeper down
// First, get directory with trailing /
Temp = fl_get_input(pFileDlgForm->DirBox);
if (!suffixIs(Temp, '/'))
Temp += '/';
Temp += pszTemp;
} else {
// Directory higher up
Temp.erase();
for (int i = 0; i < iSelect; ++i) {
string piece = fl_get_browser_line(pFileDlgForm->List, i+1);
// The '+2' is here to count the '@b' (JMarc)
Temp += piece.substr(i + 2);
}
}
// assigns it
SetDirectory(Temp);
Reread();
return false;
}
return true;
}
// Handle OK button call
bool LyXFileDlg::HandleOK()
{
// mask was changed
string pszTemp = fl_get_input(pFileDlgForm->PatBox);
if (pszTemp != pszMask) {
SetMask(pszTemp);
Reread();
return false;
}
// directory was changed
pszTemp = fl_get_input(pFileDlgForm->DirBox);
if (pszTemp!= pszDirectory) {
SetDirectory(pszTemp);
Reread();
return false;
}
// Handle return from list
int const select = fl_get_browser(pFileDlgForm->List);
if (select > iDepth) {
string const temp = direntries[select - iDepth - 1].pszName;
if (!suffixIs(temp, '/')) {
// If user didn't type anything, use browser
string const name =
fl_get_input(pFileDlgForm->Filename);
if (name.empty()) {
fl_set_input(pFileDlgForm->Filename, temp.c_str());
}
return true;
}
}
// Emulate a doubleclick
return HandleDoubleClick();
}
// Handle Cancel CB from WM close
int LyXFileDlg::CancelCB(FL_FORM *, void *)
{
// Simulate a click on the cancel button
pCurrentDlg->Force(true);
return FL_IGNORE;
}
extern "C" int C_LyXFileDlg_CancelCB(FL_FORM *fl, void *xev)
{
return LyXFileDlg::CancelCB(fl, xev);
}
// Simulates a click on OK/Cancel
void LyXFileDlg::Force(bool cancel)
{
if (cancel) {
force_cancel = true;
fl_set_button(pFileDlgForm->Cancel, 1);
} else {
force_ok = true;
fl_set_button(pFileDlgForm->Ready, 1);
}
// Start timer to break fl_do_forms loop soon
fl_set_timer(pFileDlgForm->timer, 0.1);
}
// Select: launches dialog and returns selected file
string const LyXFileDlg::Select(string const & title, string const & path,
string const & mask, string const & suggested)
{
// handles new mask and path
bool isOk = true;
if (!mask.empty()) {
SetMask(mask);
isOk = false;
}
if (!path.empty()) {
SetDirectory(path);
isOk = false;
}
if (!isOk) Reread();
// highlight the suggested file in the browser, if it exists.
int sel = 0;
string const filename = OnlyFilename(suggested);
if (!filename.empty()) {
for (int i = 0;
i < fl_get_browser_maxline(pFileDlgForm->List); ++i) {
string s =
fl_get_browser_line(pFileDlgForm->List, i + 1);
s = strip(frontStrip(s));
if (s == filename) {
sel = i + 1;
break;
}
}
}
if (sel != 0) fl_select_browser_line(pFileDlgForm->List, sel);
int const top = max(sel - 5, 1);
fl_set_browser_topline(pFileDlgForm->List, top);
// checks whether dialog can be started
if (pCurrentDlg) return string();
pCurrentDlg = this;
// runs dialog
SetInfoLine(string());
fl_set_input(pFileDlgForm->Filename, suggested.c_str());
fl_set_button(pFileDlgForm->Cancel, 0);
fl_set_button(pFileDlgForm->Ready, 0);
fl_set_focus_object(pFileDlgForm->FileDlg, pFileDlgForm->Filename);
fl_deactivate_all_forms();
fl_show_form(pFileDlgForm->FileDlg,
FL_PLACE_MOUSE | FL_FREE_SIZE, FL_TRANSIENT,
title.c_str());
isOk = RunDialog();
fl_hide_form(pFileDlgForm->FileDlg);
fl_activate_all_forms();
pCurrentDlg = 0;
// Returns filename or string() if no valid selection was made
if (!isOk || !fl_get_input(pFileDlgForm->Filename)[0]) return string();
pszFileName = fl_get_input(pFileDlgForm->Filename);
if (!AbsolutePath(pszFileName)) {
pszFileName = AddName(fl_get_input(pFileDlgForm->DirBox),
pszFileName);
}
return pszFileName;
}