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//
// "$Id: DiffChooser.cxx 386 2006-03-04 14:15:27Z mike $"
//
// DiffChooser widget code.
//
// Copyright 2005 by Michael Sweet.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License v2 as published
// by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// Contents:
//
// DiffChooser::DiffChooser() - Create a new chooser.
// DiffChooser::browser_cb() - Handle selections in the file browser.
// DiffChooser::count() - Return the number of selected files.
// DiffChooser::input_cb() - Handle input in the filename field.
// DiffChooser::menu_cb() - Handle favorites menu selections.
// DiffChooser::value() - Set the filename value.
// DiffChooser::value() - Get the filename for the specified item.
//
#include "DiffChooser.h"
#include "FavoritesWindow.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//
// 'DiffChooser::DiffChooser()' - Create a new chooser.
//
DiffChooser::DiffChooser(int X, // I - X position
int Y, // I - Y position
int W, // I - Width
int H, // I - Height
const char *L) // I - Label
: Fl_Group(X, Y, W, H, L),
input_(X, Y, W, 35),
menu_(X, Y + 35, W, 25, "Favorites"),
browser_(X, Y + 60, W, H - 60)
{
end();
resizable(&browser_);
browser_.callback((Fl_Callback *)browser_cb, this);
browser_.type(FL_MULTI_BROWSER);
browser_.when(FL_WHEN_CHANGED | FL_WHEN_NOT_CHANGED);
input_.callback((Fl_Callback *)input_cb, this);
input_.when(FL_WHEN_ENTER_KEY_CHANGED);
menu_.callback((Fl_Callback *)menu_cb, this);
value(".");
}
//
// 'DiffChooser::browser_cb()' - Handle selections in the file browser.
//
void
DiffChooser::browser_cb(Fl_File_Browser *fb,
// I - File browser widget
DiffChooser *dc)
// I - DiffChooser widget
{
char filename[1024]; // Filename
if (fb->value() <= 0)
return;
snprintf(filename, sizeof(filename), "%s%s", dc->directory_,
fb->text(fb->value()));
if (fl_filename_isdir(filename))
{
if (Fl::event_clicks())
dc->value(filename);
else
{
filename[strlen(filename) - 1] = '\0';
dc->input_.value(filename);
dc->do_callback();
}
}
else
{
dc->input_.value(filename);
dc->do_callback();
}
}
//
// 'DiffChooser::count()' - Return the number of selected files.
//
int // O - Count of selected items
DiffChooser::count()
{
int i, // Looping var
count; // Count of selected items
for (i = 1, count = 0; i <= browser_.size(); i ++)
if (browser_.selected(i))
count ++;
return (count);
}
//
// 'DiffChooser::input_cb()' - Handle input in the filename field.
//
void
DiffChooser::input_cb(Fl_File_Input *fi,// I - File input widget
DiffChooser *dc)// I - DiffChooser widget
{
const char *val; // Filename value
char matchname[1024], // Matching filename
*ptr; // Pointer into filename
int i, // Looping var
min_match, // Minimum number of matching chars
max_match, // Maximum number of matching chars
num_files, // Number of files in directory
first_line; // First matching line
const char *file; // File from directory
val = fi->value();
i = strlen(val);
if (Fl::event_key() == FL_Enter ||
Fl::event_key() == FL_KP_Enter ||
Fl::event_key() == '/' ||
(i > 0 && val[i - 1] == '/'))
{
if (!fl_filename_isdir(val) && *val)
{
dc->do_callback();
return;
}
dc->value(val);
}
matchname[sizeof(matchname) - 1] = '\0';
if (Fl::event_key() == '/' ||
Fl::event_key() == FL_Delete ||
Fl::event_key() == FL_BackSpace)
{
strncpy(matchname, val, sizeof(matchname) - 1);
if ((ptr = strrchr(matchname, '/')) != NULL)
ptr[1] = '\0';
if (strcmp(matchname, dc->directory_))
{
strcpy(dc->directory_, matchname);
dc->browser_.load(dc->directory_);
}
}
if ((val = strrchr(val, '/')) == NULL)
val = fi->value();
else
val ++;
// Do filename completion as possible...
num_files = dc->browser_.size();
min_match = strlen(val);
max_match = min_match + 1;
first_line = 0;
if (min_match > 0)
{
for (i = 1; i <= num_files && max_match > min_match; i ++)
{
file = dc->browser_.text(i);
if (!strncmp(val, file, min_match))
{
// OK, this one matches; check against the previous match
if (!first_line)
{
// First match; copy stuff over...
strncpy(matchname, file, sizeof(matchname) - 1);
max_match = strlen(matchname);
// Strip trailing /, if any...
if (matchname[max_match - 1] == '/')
{
max_match --;
matchname[max_match] = '\0';
}
// And then make sure that the item is visible
dc->browser_.topline(i);
first_line = i;
}
else
{
// Succeeding match; compare to find maximum string match...
while (max_match > min_match)
if (!strncmp(file, matchname, max_match))
break;
else
max_match --;
// Truncate the string as needed...
matchname[max_match] = '\0';
}
}
}
}
// Scroll the file list if we have a match...
dc->browser_.deselect(0);
if (first_line)
dc->browser_.select(first_line);
dc->browser_.redraw();
// Add a partial match to the input field...
if (first_line && min_match < max_match &&
Fl::event_key() != FL_BackSpace &&
Fl::event_key() != FL_Delete)
{
// Replace the text...
i = val - fi->value();
fi->replace(i, i + min_match, matchname);
// Highlight it with the cursor at the end of the selection so
// s/he can press the right arrow to accept the selection
// (Tab and End also do this for both cases.)
fi->position(i + max_match, i + min_match);
}
else
fi->position(fi->size());
}
//
// 'DiffChooser::menu_cb()' - Handle favorites menu selections.
//
void
DiffChooser::menu_cb(FavoritesMenu *fm, // I - Favorites menu widget
DiffChooser *dc) // I - DiffChooser widget
{
int i; // Menu item
FavoritesWindow *fw; // Favorites window
switch (i = fm->value())
{
case 0 : // Add to favorites
fm->add_favorite(dc->directory_);
break;
case 1 : // Manage favorites
fw = new FavoritesWindow();
fw->show();
while (fw->shown())
Fl::wait();
delete fw;
break;
case 2 : // Filesystems
dc->value("");
break;
default : // Something else
dc->value(fm->text(i));
break;
}
}
//
// 'DiffChooser::value()' - Set the filename value.
//
void
DiffChooser::value(const char *f) // I - New filename
{
char *ptr; // Pointer in filename
if (!f || !*f)
{
browser_.load("");
input_.value("");
directory_[0] = '\0';
return;
}
fl_filename_absolute(filename_, sizeof(filename_), f);
ptr = filename_ + strlen(filename_) - 3;
if (ptr > filename_ && (!strcmp(ptr, "/..") || !strcmp(ptr - 1, "/../")))
{
if (*ptr != '/')
ptr --;
*ptr = '\0';
if ((ptr = strrchr(filename_, '/')) != NULL)
*ptr = '\0';
}
if (fl_filename_isdir(filename_))
{
if (filename_[strlen(filename_) - 1] != '/')
snprintf(directory_, sizeof(directory_), "%s/", filename_);
else
strcpy(directory_, filename_);
input_.value(directory_);
}
else
{
input_.value(filename_);
if ((ptr = strrchr(filename_, '/')) != NULL)
ptr[1] = '\0';
strcpy(directory_, filename_);
}
browser_.load(directory_);
}
//
// 'DiffChooser::value()' - Get the filename for the specified item.
//
const char * // O - Filename
DiffChooser::value(int i) // I - Item number
{
// Range check...
if (i < 1 || i > browser_.size())
return (NULL);
snprintf(filename_, sizeof(filename_), "%s%s", directory_, browser_.text(i));
return (filename_);
}
//
// End of "$Id: DiffChooser.cxx 386 2006-03-04 14:15:27Z mike $".
//
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