lyx_mirror/src/frontends/xforms/FormFiledialog.C
Angus Leeming 1eb8155fa0 This file is part of LyX, the document processor.
Licence details can be found in the file COPYING.

and thank God for sed.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5211 a592a061-630c-0410-9148-cb99ea01b6c8
2002-09-05 15:14:23 +00:00

760 lines
17 KiB
C

/**
* \file FormFiledialog.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author unknown
* \author John Levon
*
* Full author contact details are available in file CREDITS
*/
#include <config.h>
#include <unistd.h>
#include <cstdlib>
#include <pwd.h>
#include <grp.h>
#include <map>
#include <algorithm>
using std::map;
using std::max;
using std::sort;
#include "frontends/Alert.h"
#include "support/FileInfo.h"
#include "support/lyxlib.h"
#include "support/lstrings.h"
#include "gettext.h"
#include "frontends/Dialogs.h"
#include "forms_gettext.h"
#include <boost/bind.hpp>
//#ifdef HAVE_ERRNO_H
//#include <cerrno>
//#endif
#if HAVE_DIRENT_H
# include <dirent.h>
#else
# define dirent direct
# 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
#ifdef __GNUG__
#pragma implementation
#endif
#include "support/filetools.h"
#include "FormFiledialog.h"
#include "forms/form_filedialog.h"
#include FORMS_H_LOCATION
namespace {
// six months, in seconds
long const SIX_MONTH_SEC = 6L * 30L * 24L * 60L * 60L;
//static
long const ONE_HOUR_SEC = 60L * 60L;
extern "C" {
static
int C_LyXFileDlg_CancelCB(FL_FORM *fl, void *xev)
{
return FileDialog::Private::CancelCB(fl, xev);
}
static
void C_LyXFileDlg_DoubleClickCB(FL_OBJECT * ob, long data)
{
FileDialog::Private::DoubleClickCB(ob, data);
}
static
void C_LyXFileDlg_FileDlgCB(FL_OBJECT * ob, long data)
{
FileDialog::Private::FileDlgCB(ob, data);
}
}
// *** 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
{
struct passwd const * entry = getpwuid(ID);
users[ID] = entry ? entry->pw_name : tostr(ID);
}
/// 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
{
struct group const * entry = getgrgid(ID);
groups[ID] = entry ? entry->gr_name : tostr(ID);
}
// local instances
UserCache lyxUserCache;
GroupCache lyxGroupCache;
// compares two LyXDirEntry objects content (used for sort)
class comp_direntry {
public:
bool operator()(DirEntry const & r1, DirEntry const & r2) const
{
bool const r1d = suffixIs(r1.name_, '/');
bool const r2d = suffixIs(r2.name_, '/');
if (r1d && !r2d)
return true;
if (!r1d && r2d)
return false;
return r1.name_ < r2.name_;
}
};
} // namespace anon
// *** FileDialog::Private class implementation
// static members
FD_filedialog * FileDialog::Private::file_dlg_form_ = 0;
FileDialog::Private * FileDialog::Private::current_dlg_ = 0;
// Reread: updates dialog list to match class directory
void FileDialog::Private::Reread()
{
// Opens directory
DIR * dir = ::opendir(directory_.c_str());
if (!dir) {
Alert::err_alert(_("Warning! Couldn't open directory."),
directory_);
directory_ = lyx::getcwd();
dir = ::opendir(directory_.c_str());
}
// Clear the present namelist
dir_entries_.clear();
// Updates display
fl_hide_object(file_dlg_form_->List);
fl_clear_browser(file_dlg_form_->List);
fl_set_input(file_dlg_form_->DirBox, directory_.c_str());
// Splits complete directory name into directories and compute depth
depth_ = 0;
string line, Temp;
string mode;
string File = directory_;
if (File != "/") {
File = split(File, Temp, '/');
}
while (!File.empty() || !Temp.empty()) {
string dline = "@b" + line + Temp + '/';
fl_add_browser_line(file_dlg_form_->List, dline.c_str());
File = split(File, Temp, '/');
line += ' ';
++depth_;
}
// Parses all entries of the given subdirectory
time_t curTime = time(0);
rewinddir(dir);
while (dirent * entry = readdir(dir)) {
bool isLink = false, isDir = false;
// If the pattern doesn't start with a dot, skip hidden files
if (!mask_.empty() && mask_[0] != '.' &&
entry->d_name[0] == '.')
continue;
// Gets filename
string fname = entry->d_name;
// Under all circumstances, "." and ".." are not wanted
if (fname == "." || fname == "..")
continue;
// gets file status
File = AddName(directory_, fname);
FileInfo fileInfo(File, true);
// can this really happen?
if (!fileInfo.isOK())
continue;
mode = fileInfo.modeString();
unsigned int const nlink = fileInfo.getNumberOfLinks();
string const user = lyxUserCache.find(fileInfo.getUid());
string const group = lyxGroupCache.find(fileInfo.getGid());
time_t modtime = fileInfo.getModificationTime();
string Time = ctime(&modtime);
if (curTime > modtime + SIX_MONTH_SEC
|| curTime < modtime + 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 = mode + ' ' +
tostr(nlink) + ' ' +
user + ' ' +
group + ' ' +
Time.substr(4, string::npos) + ' ';
buffer += entry->d_name;
buffer += fileInfo.typeIndicator();
isLink = fileInfo.isLink();
if (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);
if (fileInfo.isOK())
buffer += fileInfo.typeIndicator();
else
continue;
}
}
// filters files according to pattern and type
if (fileInfo.isRegular()
|| fileInfo.isChar()
|| fileInfo.isBlock()
|| fileInfo.isFifo()) {
if (!regexMatch(fname, mask_))
continue;
} else if (!(isDir = fileInfo.isDir()))
continue;
DirEntry tmp;
// Note ls_entry_ is an string!
tmp.ls_entry_ = buffer;
// creates used name
string temp = fname;
if (isDir)
temp += '/';
tmp.name_ = temp;
// creates displayed name
temp = entry->d_name;
if (isLink)
temp += '@';
else
temp += fileInfo.typeIndicator();
tmp.displayed_ = temp;
dir_entries_.push_back(tmp);
}
closedir(dir);
// Sort the names
sort(dir_entries_.begin(), dir_entries_.end(), comp_direntry());
// Add them to directory box
for (DirEntries::const_iterator cit = dir_entries_.begin();
cit != dir_entries_.end(); ++cit) {
string const temp = line + cit->displayed_;
fl_add_browser_line(file_dlg_form_->List, temp.c_str());
}
fl_set_browser_topline(file_dlg_form_->List, depth_);
fl_show_object(file_dlg_form_->List);
last_sel_ = -1;
}
// SetDirectory: sets dialog current directory
void FileDialog::Private::SetDirectory(string const & path)
{
string tmp;
if (path.empty())
tmp = lyx::getcwd();
else
tmp = MakeAbsPath(ExpandPath(path), directory_);
// must check the directory exists
DIR * dir = ::opendir(tmp.c_str());
if (!dir) {
Alert::err_alert(_("Warning! Couldn't open directory."), tmp);
} else {
::closedir(dir);
directory_ = tmp;
}
}
// SetMask: sets dialog file mask
void FileDialog::Private::SetMask(string const & newmask)
{
mask_ = newmask;
fl_set_input(file_dlg_form_->PatBox, mask_.c_str());
}
// SetInfoLine: sets dialog information line
void FileDialog::Private::SetInfoLine(string const & line)
{
info_line_ = line;
fl_set_object_label(file_dlg_form_->FileInfo, info_line_.c_str());
}
FileDialog::Private::Private(Dialogs & dia)
{
directory_ = MakeAbsPath(string("."));
mask_ = '*';
// Creates form if necessary.
if (!file_dlg_form_) {
file_dlg_form_ = build_filedialog(this);
// Set callbacks. This means that we don't need a patch file
fl_set_object_callback(file_dlg_form_->DirBox,
C_LyXFileDlg_FileDlgCB, 0);
fl_set_object_callback(file_dlg_form_->PatBox,
C_LyXFileDlg_FileDlgCB, 1);
fl_set_object_callback(file_dlg_form_->List,
C_LyXFileDlg_FileDlgCB, 2);
fl_set_object_callback(file_dlg_form_->Filename,
C_LyXFileDlg_FileDlgCB, 3);
fl_set_object_callback(file_dlg_form_->Rescan,
C_LyXFileDlg_FileDlgCB, 10);
fl_set_object_callback(file_dlg_form_->Home,
C_LyXFileDlg_FileDlgCB, 11);
fl_set_object_callback(file_dlg_form_->User1,
C_LyXFileDlg_FileDlgCB, 12);
fl_set_object_callback(file_dlg_form_->User2,
C_LyXFileDlg_FileDlgCB, 13);
// Make sure pressing the close box doesn't crash LyX. (RvdK)
fl_set_form_atclose(file_dlg_form_->form,
C_LyXFileDlg_CancelCB, 0);
// Register doubleclick callback
fl_set_browser_dblclick_callback(file_dlg_form_->List,
C_LyXFileDlg_DoubleClickCB,
0);
}
fl_hide_object(file_dlg_form_->User1);
fl_hide_object(file_dlg_form_->User2);
r_ = dia.redrawGUI().connect(boost::bind(&FileDialog::Private::redraw, this));
}
FileDialog::Private::~Private()
{
r_.disconnect();
}
void FileDialog::Private::redraw()
{
if (file_dlg_form_->form && file_dlg_form_->form->visible)
fl_redraw_form(file_dlg_form_->form);
}
// SetButton: sets file selector user button action
void FileDialog::Private::SetButton(int index, string const & name,
string const & path)
{
FL_OBJECT * ob;
string * tmp;
if (index == 0) {
ob = file_dlg_form_->User1;
tmp = &user_path1_;
} else if (index == 1) {
ob = file_dlg_form_->User2;
tmp = &user_path2_;
} else {
return;
}
if (!name.empty()) {
fl_set_object_label(ob, idex(name.c_str()));
fl_set_button_shortcut(ob, scex(name.c_str()), 1);
fl_show_object(ob);
*tmp = path;
} else {
fl_hide_object(ob);
tmp->erase();
}
}
// GetDirectory: gets last dialog directory
string const FileDialog::Private::GetDirectory() const
{
if (!directory_.empty())
return directory_;
else
return string(".");
}
namespace {
bool x_sync_kludge(bool ret)
{
XSync(fl_get_display(), false);
return ret;
}
} // namespace anon
// RunDialog: handle dialog during file selection
bool FileDialog::Private::RunDialog()
{
force_cancel_ = false;
force_ok_ = false;
// event loop
while (true) {
FL_OBJECT * ob = fl_do_forms();
if (ob == file_dlg_form_->Ready) {
if (HandleOK())
return x_sync_kludge(true);
} else if (ob == file_dlg_form_->Cancel || force_cancel_)
return x_sync_kludge(false);
else if (force_ok_)
return x_sync_kludge(true);
}
}
// XForms objects callback (static)
void FileDialog::Private::FileDlgCB(FL_OBJECT *, long arg)
{
if (!current_dlg_)
return;
switch (arg) {
case 0: // get directory
current_dlg_->SetDirectory(fl_get_input(file_dlg_form_->DirBox));
current_dlg_->Reread();
break;
case 1: // get mask
current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
current_dlg_->Reread();
break;
case 2: // list
current_dlg_->HandleListHit();
break;
case 10: // rescan
current_dlg_->SetDirectory(fl_get_input(file_dlg_form_->DirBox));
current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
current_dlg_->Reread();
break;
case 11: // home
current_dlg_->SetDirectory(GetEnvPath("HOME"));
current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
current_dlg_->Reread();
break;
case 12: // user button 1
current_dlg_->SetDirectory(current_dlg_->user_path1_);
current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
current_dlg_->Reread();
break;
case 13: // user button 2
current_dlg_->SetDirectory(current_dlg_->user_path2_);
current_dlg_->SetMask(fl_get_input(file_dlg_form_->PatBox));
current_dlg_->Reread();
break;
}
}
// Handle callback from list
void FileDialog::Private::HandleListHit()
{
// set info line
int const select_ = fl_get_browser(file_dlg_form_->List);
if (select_ > depth_)
SetInfoLine(dir_entries_[select_ - depth_ - 1].ls_entry_);
else
SetInfoLine(string());
}
// Callback for double click in list
void FileDialog::Private::DoubleClickCB(FL_OBJECT *, long)
{
// Simulate click on OK button
if (current_dlg_->HandleDoubleClick())
current_dlg_->Force(false);
}
// Handle double click from list
bool FileDialog::Private::HandleDoubleClick()
{
string tmp;
// set info line
bool isDir = true;
int const select_ = fl_get_browser(file_dlg_form_->List);
if (select_ > depth_) {
tmp = dir_entries_[select_ - depth_ - 1].name_;
SetInfoLine(dir_entries_[select_ - depth_ - 1].ls_entry_);
if (!suffixIs(tmp, '/')) {
isDir = false;
fl_set_input(file_dlg_form_->Filename, tmp.c_str());
}
} else if (select_ != 0) {
SetInfoLine(string());
} else
return true;
// executes action
if (isDir) {
string Temp;
// builds new directory name
if (select_ > depth_) {
// Directory deeper down
// First, get directory with trailing /
Temp = fl_get_input(file_dlg_form_->DirBox);
if (!suffixIs(Temp, '/'))
Temp += '/';
Temp += tmp;
} else {
// Directory higher up
Temp.erase();
for (int i = 0; i < select_; ++i) {
string piece = fl_get_browser_line(file_dlg_form_->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 FileDialog::Private::HandleOK()
{
// mask was changed
string tmp = fl_get_input(file_dlg_form_->PatBox);
if (tmp != mask_) {
SetMask(tmp);
Reread();
return false;
}
// directory was changed
tmp = fl_get_input(file_dlg_form_->DirBox);
if (tmp != directory_) {
SetDirectory(tmp);
Reread();
return false;
}
// Handle return from list
int const select = fl_get_browser(file_dlg_form_->List);
if (select > depth_) {
string const temp = dir_entries_[select - depth_ - 1].name_;
if (!suffixIs(temp, '/')) {
// If user didn't type anything, use browser
string const name = fl_get_input(file_dlg_form_->Filename);
if (name.empty())
fl_set_input(file_dlg_form_->Filename, temp.c_str());
return true;
}
}
// Emulate a doubleclick
return HandleDoubleClick();
}
// Handle Cancel CB from WM close
int FileDialog::Private::CancelCB(FL_FORM *, void *)
{
// Simulate a click on the cancel button
current_dlg_->Force(true);
return FL_IGNORE;
}
// Simulates a click on OK/Cancel
void FileDialog::Private::Force(bool cancel)
{
if (cancel) {
force_cancel_ = true;
fl_set_button(file_dlg_form_->Cancel, 1);
} else {
force_ok_ = true;
fl_set_button(file_dlg_form_->Ready, 1);
}
// Start timer to break fl_do_forms loop soon
fl_set_timer(file_dlg_form_->timer, 0.1);
}
// Select: launches dialog and returns selected file
string const FileDialog::Private::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(file_dlg_form_->List); ++i) {
string s = fl_get_browser_line(file_dlg_form_->List, i + 1);
s = trim(s);
if (s == filename) {
sel = i + 1;
break;
}
}
}
if (sel != 0)
fl_select_browser_line(file_dlg_form_->List, sel);
int const top = max(sel - 5, 1);
fl_set_browser_topline(file_dlg_form_->List, top);
// checks whether dialog can be started
if (current_dlg_)
return string();
current_dlg_ = this;
// runs dialog
SetInfoLine(string());
fl_set_input(file_dlg_form_->Filename, suggested.c_str());
fl_set_button(file_dlg_form_->Cancel, 0);
fl_set_button(file_dlg_form_->Ready, 0);
fl_set_focus_object(file_dlg_form_->form, file_dlg_form_->Filename);
fl_deactivate_all_forms();
fl_show_form(file_dlg_form_->form,
FL_PLACE_MOUSE | FL_FREE_SIZE, 0,
title.c_str());
isOk = RunDialog();
fl_hide_form(file_dlg_form_->form);
fl_activate_all_forms();
current_dlg_ = 0;
// Returns filename or string() if no valid selection was made
if (!isOk || !fl_get_input(file_dlg_form_->Filename)[0])
return string();
file_name_ = fl_get_input(file_dlg_form_->Filename);
if (!AbsolutePath(file_name_))
file_name_ = AddName(fl_get_input(file_dlg_form_->DirBox), file_name_);
return file_name_;
}