qulogic/libgnt

Make the combobox a bit more friendly.

2010-07-05, Sadrul Habib Chowdhury
47a58a8fcb6e
Make the combobox a bit more friendly.

While the dropdown in the combobox is not shown, and some key is pressed
that triggers an action in the dropdown (e.g. home, end keys etc.), popup
the dropdown.
/**
* GNT - The GLib Ncurses Toolkit
*
* GNT is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "gntinternal.h"
#undef GNT_LOG_DOMAIN
#define GNT_LOG_DOMAIN "FileSel"
#include "gntbutton.h"
#include "gntentry.h"
#include "gntfilesel.h"
#include "gntlabel.h"
#include "gntmarshal.h"
#include "gntstyle.h"
#include "gnttree.h"
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#if 0
#include <glob.h>
#endif
enum
{
SIG_FILE_SELECTED,
SIGS
};
static GntWindowClass *parent_class = NULL;
static guint signals[SIGS] = { 0 };
static void (*orig_map)(GntWidget *widget);
static void (*orig_size_request)(GntWidget *widget);
static void select_activated_cb(GntWidget *button, GntFileSel *sel);
static void
gnt_file_sel_destroy(GntWidget *widget)
{
GntFileSel *sel = GNT_FILE_SEL(widget);
g_free(sel->current);
g_free(sel->suggest);
if (sel->tags) {
g_list_foreach(sel->tags, (GFunc)g_free, NULL);
g_list_free(sel->tags);
}
}
#if !GLIB_CHECK_VERSION(2,8,0)
/* ripped from glib/gfileutils.c */
static gchar *
g_build_path_va (const gchar *separator,
gchar **str_array)
{
GString *result;
gint separator_len = strlen (separator);
gboolean is_first = TRUE;
gboolean have_leading = FALSE;
const gchar *single_element = NULL;
const gchar *next_element;
const gchar *last_trailing = NULL;
gint i = 0;
result = g_string_new (NULL);
next_element = str_array[i++];
while (TRUE) {
const gchar *element;
const gchar *start;
const gchar *end;
if (next_element) {
element = next_element;
next_element = str_array[i++];
} else
break;
/* Ignore empty elements */
if (!*element)
continue;
start = element;
if (separator_len) {
while (start &&
strncmp (start, separator, separator_len) == 0)
start += separator_len;
}
end = start + strlen (start);
if (separator_len) {
while (end >= start + separator_len &&
strncmp (end - separator_len, separator, separator_len) == 0)
end -= separator_len;
last_trailing = end;
while (last_trailing >= element + separator_len &&
strncmp (last_trailing - separator_len, separator, separator_len) == 0)
last_trailing -= separator_len;
if (!have_leading) {
/* If the leading and trailing separator strings are in the
* same element and overlap, the result is exactly that element
*/
if (last_trailing <= start)
single_element = element;
g_string_append_len (result, element, start - element);
have_leading = TRUE;
} else
single_element = NULL;
}
if (end == start)
continue;
if (!is_first)
g_string_append (result, separator);
g_string_append_len (result, start, end - start);
is_first = FALSE;
}
if (single_element) {
g_string_free (result, TRUE);
return g_strdup (single_element);
} else {
if (last_trailing)
g_string_append (result, last_trailing);
return g_string_free (result, FALSE);
}
}
static gchar *
g_build_pathv (const gchar *separator,
gchar **args)
{
if (!args)
return NULL;
return g_build_path_va (separator, args);
}
#endif
static char *
process_path(const char *path)
{
char **splits = NULL;
int i, j;
char *str, *ret;
splits = g_strsplit(path, G_DIR_SEPARATOR_S, -1);
for (i = 0, j = 0; splits[i]; i++) {
if (strcmp(splits[i], ".") == 0) {
g_free(splits[i]);
splits[i] = NULL;
} else if (strcmp(splits[i], "..") == 0) {
if (j)
j--;
g_free(splits[i]);
splits[i] = NULL;
} else {
if (i != j) {
g_free(splits[j]);
splits[j] = splits[i];
splits[i] = NULL;
}
j++;
}
}
g_free(splits[j]);
splits[j] = NULL;
str = g_build_pathv(G_DIR_SEPARATOR_S, splits);
ret = g_strdup_printf(G_DIR_SEPARATOR_S "%s", str);
g_free(str);
g_strfreev(splits);
return ret;
}
static void
update_location(GntFileSel *sel)
{
char *old;
const char *tmp;
tmp = sel->suggest ? sel->suggest :
(const char*)gnt_tree_get_selection_data(sel->dirsonly ? GNT_TREE(sel->dirs) : GNT_TREE(sel->files));
old = g_strdup_printf("%s%s%s", SAFE(sel->current), SAFE(sel->current)[1] ? G_DIR_SEPARATOR_S : "", tmp ? tmp : "");
gnt_entry_set_text(GNT_ENTRY(sel->location), old);
g_free(old);
}
static gboolean
is_tagged(GntFileSel *sel, const char *f)
{
char *ret = g_strdup_printf("%s%s%s", sel->current, sel->current[1] ? G_DIR_SEPARATOR_S : "", f);
gboolean find = g_list_find_custom(sel->tags, ret, (GCompareFunc)g_utf8_collate) != NULL;
g_free(ret);
return find;
}
GntFile* gnt_file_new_dir(const char *name)
{
GntFile *file = g_new0(GntFile, 1);
file->basename = g_strdup(name);
file->type = GNT_FILE_DIR;
return file;
}
GntFile* gnt_file_new(const char *name, unsigned long size)
{
GntFile *file = g_new0(GntFile, 1);
file->basename = g_strdup(name);
file->type = GNT_FILE_REGULAR;
file->size = size;
return file;
}
static gboolean
local_read_fn(const char *path, GList **files, GError **error)
{
GDir *dir;
GntFile *file;
const char *str;
dir = g_dir_open(path, 0, error);
if (dir == NULL || (error && *error)) {
return FALSE;
}
*files = NULL;
if (*path != '\0' && strcmp(path, G_DIR_SEPARATOR_S)) {
file = gnt_file_new_dir("..");
*files = g_list_prepend(*files, file);
}
while ((str = g_dir_read_name(dir)) != NULL) {
char *fp = g_build_filename(path, str, NULL);
struct stat st;
if (stat(fp, &st)) {
gnt_warning("Error stating location %s", fp);
} else {
if (S_ISDIR(st.st_mode)) {
file = gnt_file_new_dir(str);
} else {
file = gnt_file_new(str, (long)st.st_size);
}
*files = g_list_prepend(*files, file);
}
g_free(fp);
}
g_dir_close(dir);
*files = g_list_reverse(*files);
return TRUE;
}
static void
gnt_file_free(GntFile *file)
{
g_free(file->fullpath);
g_free(file->basename);
g_free(file);
}
static gboolean
location_changed(GntFileSel *sel, GError **err)
{
GList *files, *iter;
gboolean success;
if (!sel->dirs)
return TRUE;
gnt_tree_remove_all(GNT_TREE(sel->dirs));
if (sel->files)
gnt_tree_remove_all(GNT_TREE(sel->files));
gnt_entry_set_text(GNT_ENTRY(sel->location), NULL);
if (sel->current == NULL) {
if (GNT_WIDGET_IS_FLAG_SET(GNT_WIDGET(sel), GNT_WIDGET_MAPPED))
gnt_widget_draw(GNT_WIDGET(sel));
return TRUE;
}
/* XXX:\
* XXX: This is blocking.
* XXX:/
*/
files = NULL;
if (sel->read_fn)
success = sel->read_fn(sel->current, &files, err);
else
success = local_read_fn(sel->current, &files, err);
if (!success || *err) {
gnt_warning("error opening location %s (%s)",
sel->current, *err ? (*err)->message : "reason unknown");
return FALSE;
}
for (iter = files; iter; iter = iter->next) {
GntFile *file = iter->data;
char *str = file->basename;
if (file->type == GNT_FILE_DIR) {
gnt_tree_add_row_after(GNT_TREE(sel->dirs), g_strdup(str),
gnt_tree_create_row(GNT_TREE(sel->dirs), str), NULL, NULL);
if (sel->multiselect && sel->dirsonly && is_tagged(sel, str))
gnt_tree_set_row_flags(GNT_TREE(sel->dirs), (gpointer)str, GNT_TEXT_FLAG_BOLD);
} else if (!sel->dirsonly) {
char size[128];
snprintf(size, sizeof(size), "%ld", file->size);
gnt_tree_add_row_after(GNT_TREE(sel->files), g_strdup(str),
gnt_tree_create_row(GNT_TREE(sel->files), str, size, ""), NULL, NULL);
if (sel->multiselect && is_tagged(sel, str))
gnt_tree_set_row_flags(GNT_TREE(sel->files), (gpointer)str, GNT_TEXT_FLAG_BOLD);
}
}
g_list_foreach(files, (GFunc)gnt_file_free, NULL);
g_list_free(files);
if (GNT_WIDGET_IS_FLAG_SET(GNT_WIDGET(sel), GNT_WIDGET_MAPPED))
gnt_widget_draw(GNT_WIDGET(sel));
return TRUE;
}
static gboolean
dir_key_pressed(GntTree *tree, const char *key, GntFileSel *sel)
{
if (strcmp(key, "\r") == 0 || strcmp(key, "\n") == 0) {
char *str = g_strdup(gnt_tree_get_selection_data(tree));
char *path, *dir;
if (!str)
return TRUE;
path = g_build_filename(sel->current, str, NULL);
dir = g_path_get_basename(sel->current);
if (!gnt_file_sel_set_current_location(sel, path)) {
gnt_tree_set_selected(tree, str);
} else if (strcmp(str, "..") == 0) {
gnt_tree_set_selected(tree, dir);
}
gnt_bindable_perform_action_named(GNT_BINDABLE(tree), "end-search", NULL);
g_free(dir);
g_free(str);
g_free(path);
return TRUE;
}
return FALSE;
}
static gboolean
location_key_pressed(GntTree *tree, const char *key, GntFileSel *sel)
{
char *path;
char *str;
#if 0
int count;
glob_t gl;
struct stat st;
int glob_ret;
#endif
if (strcmp(key, "\r") && strcmp(key, "\n"))
return FALSE;
str = (char*)gnt_entry_get_text(GNT_ENTRY(sel->location));
if (*str == G_DIR_SEPARATOR)
path = g_strdup(str);
else
path = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", sel->current, str);
str = process_path(path);
g_free(path);
path = str;
if (gnt_file_sel_set_current_location(sel, path))
goto success;
path = g_path_get_dirname(str);
g_free(str);
if (!gnt_file_sel_set_current_location(sel, path)) {
g_free(path);
return FALSE;
}
#if 0
/* XXX: there needs to be a way to allow other methods for globbing,
* like the read_fn stuff. */
glob_ret = glob(path, GLOB_MARK, NULL, &gl);
if (!glob_ret) { /* XXX: do something with the return value */
char *loc = g_path_get_dirname(gl.gl_pathv[0]);
stat(gl.gl_pathv[0], &st);
gnt_file_sel_set_current_location(sel, loc); /* XXX: check the return value */
g_free(loc);
if (!S_ISDIR(st.st_mode) && !sel->dirsonly) {
gnt_tree_remove_all(GNT_TREE(sel->files));
for (count = 0; count < gl.gl_pathc; count++) {
char *tmp = process_path(gl.gl_pathv[count]);
loc = g_path_get_dirname(tmp);
if (g_utf8_collate(sel->current, loc) == 0) {
char *base = g_path_get_basename(tmp);
char size[128];
snprintf(size, sizeof(size), "%ld", (long)st.st_size);
gnt_tree_add_row_after(GNT_TREE(sel->files), base,
gnt_tree_create_row(GNT_TREE(sel->files), base, size, ""), NULL, NULL);
}
g_free(loc);
g_free(tmp);
}
gnt_widget_draw(sel->files);
}
} else if (sel->files) {
gnt_tree_remove_all(GNT_TREE(sel->files));
gnt_widget_draw(sel->files);
}
globfree(&gl);
#endif
success:
g_free(path);
return TRUE;
}
static void
file_sel_changed(GntWidget *widget, gpointer old, gpointer current, GntFileSel *sel)
{
if (GNT_WIDGET_IS_FLAG_SET(widget, GNT_WIDGET_HAS_FOCUS)) {
g_free(sel->suggest);
sel->suggest = NULL;
update_location(sel);
}
}
static void
gnt_file_sel_map(GntWidget *widget)
{
GntFileSel *sel = GNT_FILE_SEL(widget);
GntWidget *hbox, *vbox;
if (sel->current == NULL)
gnt_file_sel_set_current_location(sel, g_get_home_dir());
vbox = gnt_vbox_new(FALSE);
gnt_box_set_pad(GNT_BOX(vbox), 0);
gnt_box_set_alignment(GNT_BOX(vbox), GNT_ALIGN_MID);
/* The dir. and files list */
hbox = gnt_hbox_new(FALSE);
gnt_box_set_pad(GNT_BOX(hbox), 0);
gnt_box_add_widget(GNT_BOX(hbox), sel->dirs);
if (!sel->dirsonly) {
gnt_box_add_widget(GNT_BOX(hbox), sel->files);
} else {
g_signal_connect(G_OBJECT(sel->dirs), "selection_changed", G_CALLBACK(file_sel_changed), sel);
}
gnt_box_add_widget(GNT_BOX(vbox), hbox);
gnt_box_add_widget(GNT_BOX(vbox), sel->location);
/* The buttons */
hbox = gnt_hbox_new(FALSE);
gnt_box_add_widget(GNT_BOX(hbox), sel->cancel);
gnt_box_add_widget(GNT_BOX(hbox), sel->select);
gnt_box_add_widget(GNT_BOX(vbox), hbox);
gnt_box_add_widget(GNT_BOX(sel), vbox);
orig_map(widget);
update_location(sel);
}
static gboolean
toggle_tag_selection(GntBindable *bind, GList *null)
{
GntFileSel *sel = GNT_FILE_SEL(bind);
char *str;
GList *find;
char *file;
GntWidget *tree;
if (!sel->multiselect)
return FALSE;
tree = sel->dirsonly ? sel->dirs : sel->files;
if (!gnt_widget_has_focus(tree) ||
gnt_tree_is_searching(GNT_TREE(tree)))
return FALSE;
file = gnt_tree_get_selection_data(GNT_TREE(tree));
str = gnt_file_sel_get_selected_file(sel);
if ((find = g_list_find_custom(sel->tags, str, (GCompareFunc)g_utf8_collate)) != NULL) {
g_free(find->data);
sel->tags = g_list_delete_link(sel->tags, find);
gnt_tree_set_row_flags(GNT_TREE(tree), file, GNT_TEXT_FLAG_NORMAL);
g_free(str);
} else {
sel->tags = g_list_prepend(sel->tags, str);
gnt_tree_set_row_flags(GNT_TREE(tree), file, GNT_TEXT_FLAG_BOLD);
}
gnt_bindable_perform_action_named(GNT_BINDABLE(tree), "move-down", NULL);
return TRUE;
}
static gboolean
clear_tags(GntBindable *bind, GList *null)
{
GntFileSel *sel = GNT_FILE_SEL(bind);
GntWidget *tree;
GList *iter;
if (!sel->multiselect)
return FALSE;
tree = sel->dirsonly ? sel->dirs : sel->files;
if (!gnt_widget_has_focus(tree) ||
gnt_tree_is_searching(GNT_TREE(tree)))
return FALSE;
g_list_foreach(sel->tags, (GFunc)g_free, NULL);
g_list_free(sel->tags);
sel->tags = NULL;
for (iter = GNT_TREE(tree)->list; iter; iter = iter->next)
gnt_tree_set_row_flags(GNT_TREE(tree), iter->data, GNT_TEXT_FLAG_NORMAL);
return TRUE;
}
static gboolean
up_directory(GntBindable *bind, GList *null)
{
char *path, *dir;
GntFileSel *sel = GNT_FILE_SEL(bind);
if (!gnt_widget_has_focus(sel->dirs) &&
!gnt_widget_has_focus(sel->files))
return FALSE;
if (gnt_tree_is_searching(GNT_TREE(sel->dirs)) ||
gnt_tree_is_searching(GNT_TREE(sel->files)))
return FALSE;
path = g_build_filename(sel->current, "..", NULL);
dir = g_path_get_basename(sel->current);
if (gnt_file_sel_set_current_location(sel, path))
gnt_tree_set_selected(GNT_TREE(sel->dirs), dir);
g_free(dir);
g_free(path);
return TRUE;
}
static void
gnt_file_sel_size_request(GntWidget *widget)
{
GntFileSel *sel;
if (widget->priv.height > 0)
return;
sel = GNT_FILE_SEL(widget);
sel->dirs->priv.height = 16;
sel->files->priv.height = 16;
orig_size_request(widget);
}
static void
gnt_file_sel_class_init(GntFileSelClass *klass)
{
GntBindableClass *bindable = GNT_BINDABLE_CLASS(klass);
GntWidgetClass *kl = GNT_WIDGET_CLASS(klass);
parent_class = GNT_WINDOW_CLASS(klass);
kl->destroy = gnt_file_sel_destroy;
orig_map = kl->map;
kl->map = gnt_file_sel_map;
orig_size_request = kl->size_request;
kl->size_request = gnt_file_sel_size_request;
signals[SIG_FILE_SELECTED] =
g_signal_new("file_selected",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(GntFileSelClass, file_selected),
NULL, NULL,
gnt_closure_marshal_VOID__STRING_STRING,
G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING);
gnt_bindable_class_register_action(bindable, "toggle-tag", toggle_tag_selection, "t", NULL);
gnt_bindable_class_register_action(bindable, "clear-tags", clear_tags, "c", NULL);
gnt_bindable_class_register_action(bindable, "up-directory", up_directory, GNT_KEY_BACKSPACE, NULL);
gnt_style_read_actions(G_OBJECT_CLASS_TYPE(klass), GNT_BINDABLE_CLASS(klass));
GNTDEBUG;
}
static void
gnt_file_sel_init(GTypeInstance *instance, gpointer class)
{
GntFileSel *sel = GNT_FILE_SEL(instance);
sel->dirs = gnt_tree_new();
gnt_tree_set_compare_func(GNT_TREE(sel->dirs), (GCompareFunc)g_utf8_collate);
gnt_tree_set_hash_fns(GNT_TREE(sel->dirs), g_str_hash, g_str_equal, g_free);
gnt_tree_set_column_titles(GNT_TREE(sel->dirs), "Directories");
gnt_tree_set_show_title(GNT_TREE(sel->dirs), TRUE);
gnt_tree_set_col_width(GNT_TREE(sel->dirs), 0, 20);
g_signal_connect(G_OBJECT(sel->dirs), "key_pressed", G_CALLBACK(dir_key_pressed), sel);
sel->files = gnt_tree_new_with_columns(2); /* Name, Size */
gnt_tree_set_compare_func(GNT_TREE(sel->files), (GCompareFunc)g_utf8_collate);
gnt_tree_set_hash_fns(GNT_TREE(sel->files), g_str_hash, g_str_equal, g_free);
gnt_tree_set_column_titles(GNT_TREE(sel->files), "Filename", "Size");
gnt_tree_set_show_title(GNT_TREE(sel->files), TRUE);
gnt_tree_set_col_width(GNT_TREE(sel->files), 0, 25);
gnt_tree_set_col_width(GNT_TREE(sel->files), 1, 10);
gnt_tree_set_column_is_right_aligned(GNT_TREE(sel->files), 1, TRUE);
g_signal_connect(G_OBJECT(sel->files), "selection_changed", G_CALLBACK(file_sel_changed), sel);
/* The location entry */
sel->location = gnt_entry_new(NULL);
g_signal_connect(G_OBJECT(sel->location), "key_pressed", G_CALLBACK(location_key_pressed), sel);
sel->cancel = gnt_button_new("Cancel");
sel->select = gnt_button_new("Select");
g_signal_connect_swapped(G_OBJECT(sel->files), "activate", G_CALLBACK(gnt_widget_activate), sel->select);
g_signal_connect(G_OBJECT(sel->select), "activate", G_CALLBACK(select_activated_cb), sel);
}
/******************************************************************************
* GntFileSel API
*****************************************************************************/
GType
gnt_file_sel_get_gtype(void)
{
static GType type = 0;
if(type == 0)
{
static const GTypeInfo info = {
sizeof(GntFileSelClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc)gnt_file_sel_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(GntFileSel),
0, /* n_preallocs */
gnt_file_sel_init, /* instance_init */
NULL
};
type = g_type_register_static(GNT_TYPE_WINDOW,
"GntFileSel",
&info, 0);
}
return type;
}
static void
select_activated_cb(GntWidget *button, GntFileSel *sel)
{
char *path = gnt_file_sel_get_selected_file(sel);
char *file = g_path_get_basename(path);
g_signal_emit(sel, signals[SIG_FILE_SELECTED], 0, path, file);
g_free(file);
g_free(path);
}
GntWidget *gnt_file_sel_new(void)
{
GntWidget *widget = g_object_new(GNT_TYPE_FILE_SEL, NULL);
return widget;
}
gboolean gnt_file_sel_set_current_location(GntFileSel *sel, const char *path)
{
char *old;
GError *error = NULL;
gboolean ret = TRUE;
old = sel->current;
sel->current = process_path(path);
if (!location_changed(sel, &error)) {
g_error_free(error);
error = NULL;
g_free(sel->current);
sel->current = old;
location_changed(sel, &error);
ret = FALSE;
} else
g_free(old);
update_location(sel);
return ret;
}
void gnt_file_sel_set_dirs_only(GntFileSel *sel, gboolean dirs)
{
sel->dirsonly = dirs;
}
gboolean gnt_file_sel_get_dirs_only(GntFileSel *sel)
{
return sel->dirsonly;
}
void gnt_file_sel_set_suggested_filename(GntFileSel *sel, const char *suggest)
{
g_free(sel->suggest);
sel->suggest = g_strdup(suggest);
}
char *gnt_file_sel_get_selected_file(GntFileSel *sel)
{
char *ret;
if (sel->dirsonly) {
ret = g_path_get_dirname(gnt_entry_get_text(GNT_ENTRY(sel->location)));
} else {
ret = g_strdup(gnt_entry_get_text(GNT_ENTRY(sel->location)));
}
return ret;
}
void gnt_file_sel_set_must_exist(GntFileSel *sel, gboolean must)
{
/*XXX: What do I do with this? */
sel->must_exist = must;
}
gboolean gnt_file_sel_get_must_exist(GntFileSel *sel)
{
return sel->must_exist;
}
void gnt_file_sel_set_multi_select(GntFileSel *sel, gboolean set)
{
sel->multiselect = set;
}
GList *gnt_file_sel_get_selected_multi_files(GntFileSel *sel)
{
GList *list = NULL, *iter;
char *str = gnt_file_sel_get_selected_file(sel);
for (iter = sel->tags; iter; iter = iter->next) {
list = g_list_prepend(list, g_strdup(iter->data));
if (g_utf8_collate(str, iter->data)) {
g_free(str);
str = NULL;
}
}
if (str)
list = g_list_prepend(list, str);
list = g_list_reverse(list);
return list;
}
void gnt_file_sel_set_read_fn(GntFileSel *sel, gboolean (*read_fn)(const char *path, GList **files, GError **error))
{
sel->read_fn = read_fn;
}