qulogic/libgnt

Python isn't actually required so don't mark it as such

2020-04-22, Gary Kramlich
aa7c043c58dd
Python isn't actually required so don't mark it as such
/*
* 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 02110-1301, USA.
*/
#include <ctype.h>
#include <string.h>
#include "gntinternal.h"
#include "gntbox.h"
#include "gntentry.h"
#include "gntstyle.h"
#include "gnttree.h"
#include "gntutils.h"
#include "gntwidgetprivate.h"
enum
{
SIG_TEXT_CHANGED,
SIG_COMPLETION,
SIGS,
};
typedef enum
{
ENTRY_JAIL = -1, /* Suspend the kill ring. */
ENTRY_DEL_BWD_WORD = 1,
ENTRY_DEL_BWD_CHAR,
ENTRY_DEL_FWD_WORD,
ENTRY_DEL_FWD_CHAR,
ENTRY_DEL_EOL,
ENTRY_DEL_BOL,
} GntEntryAction;
typedef struct
{
GString *buffer;
GntEntryAction last;
} GntEntryKillRing;
typedef struct
{
char *needle;
} GntEntrySearch;
typedef struct
{
GntEntryFlag flag;
char *start;
char *end;
char *scroll; /* Current scrolling position */
char *cursor; /* Cursor location */
/* 0 <= cursor - scroll < widget-width */
size_t buffer; /* Size of the buffer */
int max; /* 0 means infinite */
gboolean masked;
GList *history; /* History of the strings. User can use this by pressing
ctrl+up/down */
int histlength; /* How long can the history be? */
GList *suggests; /* List of suggestions */
gboolean word; /* Are the suggestions for only a word, or for the whole
thing? */
gboolean always; /* Should the list of suggestions show at all times, or
only on tab-press? */
GntWidget *ddown; /* The dropdown with the suggested list */
GntEntryKillRing *killring;
GntEntrySearch *search;
} GntEntryPrivate;
static guint signals[SIGS] = { 0 };
static gboolean gnt_entry_key_pressed(GntWidget *widget, const char *text);
static void gnt_entry_set_text_internal(GntEntry *entry, const char *text);
G_DEFINE_TYPE_WITH_PRIVATE(GntEntry, gnt_entry, GNT_TYPE_WIDGET)
static gboolean
update_kill_ring(GntEntryPrivate *priv, GntEntryAction action, const char *text,
int len)
{
if (action < 0) {
priv->killring->last = action;
return FALSE;
}
if (len == 0)
len = strlen(text);
else if (len < 0) {
text += len;
len = -len;
}
if (action != priv->killring->last) {
struct {
GntEntryAction one;
GntEntryAction two;
} merges[] = {
{ENTRY_DEL_BWD_WORD, ENTRY_DEL_FWD_WORD},
{ENTRY_DEL_BWD_CHAR, ENTRY_DEL_FWD_CHAR},
{ENTRY_DEL_BOL, ENTRY_DEL_EOL},
{ENTRY_JAIL, ENTRY_JAIL},
};
int i;
for (i = 0; merges[i].one != ENTRY_JAIL; i++) {
if (merges[i].one == priv->killring->last &&
merges[i].two == action) {
g_string_append_len(priv->killring->buffer,
text, len);
break;
} else if (merges[i].one == action &&
merges[i].two == priv->killring->last) {
g_string_prepend_len(priv->killring->buffer,
text, len);
break;
}
}
if (merges[i].one == ENTRY_JAIL) {
g_string_assign(priv->killring->buffer, text);
g_string_truncate(priv->killring->buffer, len);
}
priv->killring->last = action;
} else {
if (action == ENTRY_DEL_BWD_CHAR || action == ENTRY_DEL_BWD_WORD)
g_string_prepend_len(priv->killring->buffer, text, len);
else
g_string_append_len(priv->killring->buffer, text, len);
}
return TRUE;
}
static void
destroy_suggest(GntEntryPrivate *priv)
{
if (priv->ddown) {
gnt_widget_destroy(gnt_widget_get_parent(priv->ddown));
priv->ddown = NULL;
}
}
static char *
get_beginning_of_word(GntEntryPrivate *priv)
{
char *s = priv->cursor;
while (s > priv->start) {
char *t = g_utf8_find_prev_char(priv->start, s);
if (isspace(*t))
break;
s = t;
}
return s;
}
static gboolean
complete_suggest(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
int offstart = 0, offend = 0;
if (priv->word) {
char *s = get_beginning_of_word(priv);
const char *iter = text;
offstart = g_utf8_pointer_to_offset(priv->start, s);
while (*iter && toupper(*s) == toupper(*iter)) {
*s++ = *iter++;
}
if (*iter) {
gnt_entry_key_pressed(GNT_WIDGET(entry), iter);
}
offend = g_utf8_pointer_to_offset(priv->start, priv->cursor);
} else {
offstart = 0;
gnt_entry_set_text_internal(entry, text);
offend = g_utf8_strlen(text, -1);
}
g_signal_emit(G_OBJECT(entry), signals[SIG_COMPLETION], 0,
priv->start + offstart, priv->start + offend);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
static int
max_common_prefix(const char *s, const char *t)
{
const char *f = s;
while (*f && *t && *f == *t++)
f++;
return f - s;
}
static gboolean
show_suggest_dropdown(GntEntry *entry)
{
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
char *suggest = NULL;
gsize len;
int offset = 0, x, y;
int count = 0;
GList *iter;
const char *text = NULL;
const char *sgst = NULL;
int max = -1;
if (priv->word) {
char *s = get_beginning_of_word(priv);
suggest = g_strndup(s, priv->cursor - s);
if (priv->scroll < s) {
offset = gnt_util_onscreen_width(priv->scroll, s);
}
} else {
suggest = g_strdup(priv->start);
}
len = strlen(suggest); /* Don't need to use the utf8-function here */
if (priv->ddown == NULL) {
GntWidget *box = gnt_vbox_new(FALSE);
priv->ddown = gnt_tree_new();
gnt_tree_set_compare_func(GNT_TREE(priv->ddown),
(GCompareFunc)g_utf8_collate);
gnt_box_add_widget(GNT_BOX(box), priv->ddown);
gnt_widget_set_transient(box, TRUE);
gnt_widget_get_position(GNT_WIDGET(entry), &x, &y);
x += offset;
y++;
if (y + 10 >= getmaxy(stdscr))
y -= 11;
gnt_widget_set_position(box, x, y);
} else {
gnt_tree_remove_all(GNT_TREE(priv->ddown));
}
for (count = 0, iter = priv->suggests; iter; iter = iter->next) {
text = iter->data;
if (g_ascii_strncasecmp(suggest, text, len) == 0 && strlen(text) >= len)
{
gnt_tree_add_row_after(
GNT_TREE(priv->ddown), (gpointer)text,
gnt_tree_create_row(GNT_TREE(priv->ddown),
text),
NULL, NULL);
count++;
if (max == -1)
max = strlen(text) - len;
else if (max)
max = MIN(max, max_common_prefix(sgst + len, text + len));
sgst = text;
}
}
g_free(suggest);
if (count == 0) {
destroy_suggest(priv);
return FALSE;
} else if (count == 1) {
char *store = g_strndup(priv->start, priv->end - priv->start);
gboolean ret;
destroy_suggest(priv);
complete_suggest(entry, sgst);
ret = (strncmp(store, priv->start, priv->end - priv->start) !=
0);
g_free(store);
return ret;
} else {
if (max > 0) {
GntWidget *ddown = priv->ddown;
char *match = g_strndup(sgst + len, max);
priv->ddown = NULL;
gnt_entry_key_pressed(GNT_WIDGET(entry), match);
g_free(match);
priv->ddown = ddown;
}
gnt_widget_draw(gnt_widget_get_parent(priv->ddown));
}
return TRUE;
}
static void
gnt_entry_draw(GntWidget *widget)
{
GntEntry *entry = GNT_ENTRY(widget);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
WINDOW *window = gnt_widget_get_window(widget);
gint width;
int stop;
gboolean focus;
int curpos;
if ((focus = gnt_widget_has_focus(widget)))
wbkgdset(window, '\0' | gnt_color_pair(GNT_COLOR_TEXT_NORMAL));
else
wbkgdset(window, '\0' | gnt_color_pair(GNT_COLOR_HIGHLIGHT_D));
if (priv->masked) {
mvwhline(window, 0, 0, gnt_ascii_only() ? '*' : ACS_BULLET,
g_utf8_pointer_to_offset(priv->scroll, priv->end));
} else
mvwprintw(window, 0, 0, "%s", C_(priv->scroll));
stop = gnt_util_onscreen_width(priv->scroll, priv->end);
gnt_widget_get_internal_size(GNT_WIDGET(entry), &width, NULL);
if (stop < width) {
mvwhline(window, 0, stop, GNT_ENTRY_CHAR, width - stop);
}
curpos = gnt_util_onscreen_width(priv->scroll, priv->cursor);
if (focus) {
mvwchgat(window, 0, curpos, 1, A_REVERSE, GNT_COLOR_TEXT_NORMAL,
NULL);
}
(void)wmove(window, 0, curpos);
}
static void
gnt_entry_size_request(GntWidget *widget)
{
if (!gnt_widget_get_mapped(widget)) {
gnt_widget_set_internal_size(widget, 20, 1);
}
}
static void
gnt_entry_map(GntWidget *widget)
{
gint width, height;
gnt_widget_get_internal_size(widget, &width, &height);
if (width == 0 || height == 0) {
gnt_widget_size_request(widget);
}
}
static void
entry_redraw(GntWidget *widget)
{
gnt_entry_draw(widget);
gnt_widget_queue_update(widget);
}
static void
entry_text_changed(GntEntry *entry)
{
g_signal_emit(entry, signals[SIG_TEXT_CHANGED], 0);
}
static gboolean
move_back(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->cursor <= priv->start) {
return FALSE;
}
priv->cursor = g_utf8_find_prev_char(priv->start, priv->cursor);
if (priv->cursor < priv->scroll) {
priv->scroll = priv->cursor;
}
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(GNT_WIDGET(entry));
return TRUE;
}
static void
scroll_to_fit(GntEntry *entry)
{
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
gint width;
gnt_widget_get_internal_size(GNT_WIDGET(entry), &width, NULL);
while (gnt_util_onscreen_width(priv->scroll, priv->cursor) >= width) {
priv->scroll = g_utf8_find_next_char(priv->scroll, NULL);
}
}
static gboolean
move_forward(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->cursor >= priv->end) {
return FALSE;
}
priv->cursor = g_utf8_find_next_char(priv->cursor, NULL);
scroll_to_fit(entry);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(GNT_WIDGET(entry));
return TRUE;
}
static gboolean
backspace(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
int len;
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->cursor <= priv->start) {
return TRUE;
}
len = priv->cursor - g_utf8_find_prev_char(priv->start, priv->cursor);
update_kill_ring(priv, ENTRY_JAIL, priv->cursor, -len);
priv->cursor -= len;
memmove(priv->cursor, priv->cursor + len, priv->end - priv->cursor);
priv->end -= len;
if (priv->scroll > priv->start) {
priv->scroll = g_utf8_find_prev_char(priv->start, priv->scroll);
}
entry_redraw(GNT_WIDGET(entry));
if (priv->ddown) {
show_suggest_dropdown(entry);
}
entry_text_changed(entry);
return TRUE;
}
static gboolean
delkey(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
int len;
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->cursor >= priv->end) {
return FALSE;
}
len = g_utf8_find_next_char(priv->cursor, NULL) - priv->cursor;
update_kill_ring(priv, ENTRY_JAIL, priv->cursor, len);
memmove(priv->cursor, priv->cursor + len,
priv->end - priv->cursor - len + 1);
priv->end -= len;
entry_redraw(GNT_WIDGET(entry));
if (priv->ddown) {
show_suggest_dropdown(entry);
}
entry_text_changed(entry);
return TRUE;
}
static gboolean
move_start(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
priv->scroll = priv->cursor = priv->start;
entry_redraw(GNT_WIDGET(entry));
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
static gboolean
move_end(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
priv->cursor = priv->end;
/* This should be better than this */
scroll_to_fit(entry);
entry_redraw(GNT_WIDGET(entry));
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
static gboolean
history_next(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->histlength && priv->history->prev) {
priv->history = priv->history->prev;
gnt_entry_set_text_internal(entry, priv->history->data);
destroy_suggest(priv);
entry_text_changed(entry);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
return FALSE;
}
static gboolean
history_prev(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->histlength && priv->history->next) {
if (priv->history->prev == NULL) {
/* Save the current contents */
char *text = g_strdup(gnt_entry_get_text(entry));
g_free(priv->history->data);
priv->history->data = text;
}
priv->history = priv->history->next;
gnt_entry_set_text_internal(entry, priv->history->data);
destroy_suggest(priv);
entry_text_changed(entry);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
return FALSE;
}
static gboolean
history_search(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
GList *iter;
const char *current;
if (priv->history->prev && priv->search->needle) {
current = priv->search->needle;
} else {
current = gnt_entry_get_text(entry);
}
if (!priv->histlength || !priv->history->next || !*current) {
return FALSE;
}
for (iter = priv->history->next; iter; iter = iter->next) {
const char *str = iter->data;
/* A more utf8-friendly version of strstr would have been better, but
* for now, this will have to do. */
if (strstr(str, current) != NULL)
break;
}
if (!iter)
return TRUE;
if (priv->history->prev == NULL) {
/* We are doing it for the first time. Save the current contents */
char *text = g_strdup(gnt_entry_get_text(entry));
g_free(priv->search->needle);
priv->search->needle = g_strdup(current);
g_free(priv->history->data);
priv->history->data = text;
}
priv->history = iter;
gnt_entry_set_text_internal(entry, priv->history->data);
destroy_suggest(priv);
entry_text_changed(entry);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
return TRUE;
}
static gboolean
clipboard_paste(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
gchar *i, *text, *a, *all;
text = i = gnt_get_clipboard_string();
while (*i != '\0') {
i = g_utf8_next_char(i);
if (*i == '\r' || *i == '\n')
*i = ' ';
}
a = g_strndup(priv->start, priv->cursor - priv->start);
all = g_strconcat(a, text, priv->cursor, NULL);
gnt_entry_set_text_internal(entry, all);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
g_free(a);
g_free(text);
g_free(all);
return TRUE;
}
static gboolean
suggest_show(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->ddown) {
gnt_bindable_perform_action_named(GNT_BINDABLE(priv->ddown),
"move-down", NULL);
return TRUE;
}
return show_suggest_dropdown(entry);
}
static gboolean
suggest_next(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->ddown) {
gnt_bindable_perform_action_named(GNT_BINDABLE(priv->ddown),
"move-down", NULL);
return TRUE;
}
return FALSE;
}
static gboolean
suggest_prev(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->ddown) {
gnt_bindable_perform_action_named(GNT_BINDABLE(priv->ddown),
"move-up", NULL);
return TRUE;
}
return FALSE;
}
static gboolean
suggest_next_page(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->ddown) {
gnt_bindable_perform_action_named(GNT_BINDABLE(priv->ddown),
"page-down", NULL);
return TRUE;
}
return FALSE;
}
static gboolean
suggest_prev_page(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->ddown) {
gnt_bindable_perform_action_named(GNT_BINDABLE(priv->ddown),
"page-up", NULL);
return TRUE;
}
return FALSE;
}
static gboolean
del_to_home(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->cursor <= priv->start) {
return TRUE;
}
update_kill_ring(priv, ENTRY_DEL_BOL, priv->start,
priv->cursor - priv->start);
memmove(priv->start, priv->cursor, priv->end - priv->cursor);
priv->end -= (priv->cursor - priv->start);
priv->cursor = priv->scroll = priv->start;
memset(priv->end, '\0', priv->buffer - (priv->end - priv->start));
entry_redraw(GNT_WIDGET(bind));
entry_text_changed(entry);
return TRUE;
}
static gboolean
del_to_end(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (priv->end <= priv->cursor) {
return TRUE;
}
update_kill_ring(priv, ENTRY_DEL_EOL, priv->cursor,
priv->end - priv->cursor);
priv->end = priv->cursor;
memset(priv->end, '\0', priv->buffer - (priv->end - priv->start));
entry_redraw(GNT_WIDGET(bind));
entry_text_changed(entry);
return TRUE;
}
#define SAME(a,b) ((g_unichar_isalnum(a) && g_unichar_isalnum(b)) || \
(g_unichar_isspace(a) && g_unichar_isspace(b)) || \
(g_unichar_iswide(a) && g_unichar_iswide(b)) || \
(g_unichar_ispunct(a) && g_unichar_ispunct(b)))
static const char *
begin_word(const char *text, const char *begin)
{
gunichar ch = 0;
while (text > begin && (!*text || g_unichar_isspace(g_utf8_get_char(text))))
text = g_utf8_find_prev_char(begin, text);
ch = g_utf8_get_char(text);
while ((text = g_utf8_find_prev_char(begin, text)) >= begin) {
gunichar cur = g_utf8_get_char(text);
if (!SAME(ch, cur))
break;
}
return (text ? g_utf8_find_next_char(text, NULL) : begin);
}
static const char *
next_begin_word(const char *text, const char *end)
{
gunichar ch = 0;
while (text && text < end && g_unichar_isspace(g_utf8_get_char(text)))
text = g_utf8_find_next_char(text, end);
if (text) {
ch = g_utf8_get_char(text);
while ((text = g_utf8_find_next_char(text, end)) != NULL && text <= end) {
gunichar cur = g_utf8_get_char(text);
if (!SAME(ch, cur))
break;
}
}
return (text ? text : end);
}
#undef SAME
static gboolean
move_back_word(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
const char *iter = g_utf8_find_prev_char(priv->start, priv->cursor);
if (iter < priv->start) {
return TRUE;
}
iter = begin_word(iter, priv->start);
priv->cursor = (char *)iter;
if (priv->cursor < priv->scroll) {
priv->scroll = priv->cursor;
}
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(GNT_WIDGET(bind));
return TRUE;
}
static gboolean
del_prev_word(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntWidget *widget = GNT_WIDGET(bind);
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
char *iter = g_utf8_find_prev_char(priv->start, priv->cursor);
int count;
if (iter < priv->start) {
return TRUE;
}
iter = (char *)begin_word(iter, priv->start);
count = priv->cursor - iter;
update_kill_ring(priv, ENTRY_DEL_BWD_WORD, iter, count);
memmove(iter, priv->cursor, priv->end - priv->cursor);
priv->end -= count;
priv->cursor = iter;
if (priv->cursor <= priv->scroll) {
gint width;
gnt_widget_get_internal_size(widget, &width, NULL);
priv->scroll = priv->cursor - width + 2;
if (priv->scroll < priv->start) {
priv->scroll = priv->start;
}
}
memset(priv->end, '\0', priv->buffer - (priv->end - priv->start));
entry_redraw(widget);
entry_text_changed(entry);
return TRUE;
}
static gboolean
move_forward_word(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
GntWidget *widget = GNT_WIDGET(bind);
priv->cursor = (char *)next_begin_word(priv->cursor, priv->end);
scroll_to_fit(entry);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(widget);
return TRUE;
}
static gboolean
delete_forward_word(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
GntWidget *widget = GNT_WIDGET(bind);
char *iter = (char *)next_begin_word(priv->cursor, priv->end);
int len = priv->end - iter + 1;
if (len <= 0)
return TRUE;
update_kill_ring(priv, ENTRY_DEL_FWD_WORD, priv->cursor,
iter - priv->cursor);
memmove(priv->cursor, iter, len);
len = iter - priv->cursor;
priv->end -= len;
memset(priv->end, '\0', len);
entry_redraw(widget);
entry_text_changed(entry);
return TRUE;
}
static gboolean
transpose_chars(GntBindable *bind, GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
char *current, *prev;
char hold[8]; /* that's right */
if (priv->cursor <= priv->start) {
return FALSE;
}
if (!*priv->cursor) {
priv->cursor = g_utf8_find_prev_char(priv->start, priv->cursor);
}
current = priv->cursor;
prev = g_utf8_find_prev_char(priv->start, priv->cursor);
move_forward(bind, params);
/* Let's do this dance! */
memcpy(hold, prev, current - prev);
memmove(prev, current, priv->cursor - current);
memcpy(prev + (priv->cursor - current), hold, current - prev);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(GNT_WIDGET(entry));
entry_text_changed(entry);
return TRUE;
}
static gboolean
entry_yank(GntBindable *bind, G_GNUC_UNUSED GList *params)
{
GntEntry *entry = GNT_ENTRY(bind);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
gnt_entry_key_pressed(GNT_WIDGET(entry), priv->killring->buffer->str);
return TRUE;
}
static gboolean
gnt_entry_key_pressed(GntWidget *widget, const char *text)
{
GntEntry *entry = GNT_ENTRY(widget);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
if (text[0] == 27)
{
if (text[1] == 0)
{
destroy_suggest(priv);
return TRUE;
}
return FALSE;
}
if ((text[0] == '\r' || text[0] == ' ' || text[0] == '\n') &&
priv->ddown) {
char *text = g_strdup(
gnt_tree_get_selection_data(GNT_TREE(priv->ddown)));
destroy_suggest(priv);
complete_suggest(entry, text);
g_free(text);
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_text_changed(entry);
return TRUE;
}
if (!iscntrl(text[0]))
{
const char *str, *next;
for (str = text; *str; str = next)
{
gsize len;
next = g_utf8_find_next_char(str, NULL);
len = next - str;
/* Valid input? */
/* XXX: Is it necessary to use _unichar_ variants here? */
if (ispunct(*str) &&
(priv->flag & GNT_ENTRY_FLAG_NO_PUNCT)) {
continue;
}
if (isspace(*str) &&
(priv->flag & GNT_ENTRY_FLAG_NO_SPACE)) {
continue;
}
if (isalpha(*str) &&
!(priv->flag & GNT_ENTRY_FLAG_ALPHA)) {
continue;
}
if (isdigit(*str) &&
!(priv->flag & GNT_ENTRY_FLAG_INT)) {
continue;
}
/* Reached the max? */
if (priv->max &&
g_utf8_pointer_to_offset(priv->start, priv->end) >=
priv->max) {
continue;
}
if ((gsize)(priv->end + len - priv->start) >=
priv->buffer) {
/* This will cause the buffer to grow */
char *tmp = g_strdup(priv->start);
gnt_entry_set_text_internal(entry, tmp);
g_free(tmp);
}
memmove(priv->cursor + len, priv->cursor,
priv->end - priv->cursor + 1);
priv->end += len;
while (str < next)
{
if (*str == '\r' || *str == '\n')
*priv->cursor = ' ';
else
*priv->cursor = *str;
priv->cursor++;
str++;
}
scroll_to_fit(entry);
if (priv->ddown) {
show_suggest_dropdown(entry);
}
}
update_kill_ring(priv, ENTRY_JAIL, NULL, 0);
entry_redraw(widget);
entry_text_changed(entry);
return TRUE;
}
if (text[0] == '\r' || text[0] == '\n') {
gnt_widget_activate(widget);
return TRUE;
}
return FALSE;
}
static void
jail_killring(GntEntryKillRing *kr)
{
g_string_free(kr->buffer, TRUE);
g_free(kr);
}
static void
gnt_entry_destroy(GntWidget *widget)
{
GntEntry *entry = GNT_ENTRY(widget);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
g_free(priv->start);
if (priv->history) {
priv->history = g_list_first(priv->history);
g_list_free_full(priv->history, g_free);
}
if (priv->suggests) {
g_list_free_full(priv->suggests, g_free);
}
if (priv->ddown) {
gnt_widget_destroy(gnt_widget_get_parent(priv->ddown));
}
g_free(priv->search->needle);
g_free(priv->search);
jail_killring(priv->killring);
}
static void
gnt_entry_lost_focus(GntWidget *widget)
{
GntEntry *entry = GNT_ENTRY(widget);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
destroy_suggest(priv);
entry_redraw(widget);
}
static gboolean
gnt_entry_clicked(GntWidget *widget, GntMouseEvent event, G_GNUC_UNUSED int x,
G_GNUC_UNUSED int y)
{
if (event == GNT_MIDDLE_MOUSE_DOWN) {
clipboard_paste(GNT_BINDABLE(widget), NULL);
return TRUE;
}
return FALSE;
}
static void
gnt_entry_class_init(GntEntryClass *klass)
{
GntBindableClass *bindable = GNT_BINDABLE_CLASS(klass);
GntWidgetClass *widget_class = GNT_WIDGET_CLASS(klass);
char s[3] = {GNT_ESCAPE, erasechar(), 0};
widget_class->clicked = gnt_entry_clicked;
widget_class->destroy = gnt_entry_destroy;
widget_class->draw = gnt_entry_draw;
widget_class->map = gnt_entry_map;
widget_class->size_request = gnt_entry_size_request;
widget_class->key_pressed = gnt_entry_key_pressed;
widget_class->lost_focus = gnt_entry_lost_focus;
signals[SIG_TEXT_CHANGED] =
g_signal_new("text_changed",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(GntEntryClass, text_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
/**
* GntEntry::completion:
*
* Since: 2.1.0
*/
signals[SIG_COMPLETION] =
g_signal_new("completion",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_POINTER);
gnt_bindable_class_register_action(bindable, "cursor-home", move_start,
GNT_KEY_CTRL_A, NULL);
gnt_bindable_register_binding(bindable, "cursor-home", GNT_KEY_HOME, NULL);
gnt_bindable_class_register_action(bindable, "cursor-end", move_end,
GNT_KEY_CTRL_E, NULL);
gnt_bindable_register_binding(bindable, "cursor-end", GNT_KEY_END, NULL);
gnt_bindable_class_register_action(bindable, "delete-prev", backspace,
GNT_KEY_BACKSPACE, NULL);
gnt_bindable_register_binding(bindable, "delete-prev", s + 1, NULL);
gnt_bindable_register_binding(bindable, "delete-prev", GNT_KEY_CTRL_H, NULL);
gnt_bindable_class_register_action(bindable, "delete-next", delkey,
GNT_KEY_DEL, NULL);
gnt_bindable_register_binding(bindable, "delete-next", GNT_KEY_CTRL_D, NULL);
gnt_bindable_class_register_action(bindable, "delete-start", del_to_home,
GNT_KEY_CTRL_U, NULL);
gnt_bindable_class_register_action(bindable, "delete-end", del_to_end,
GNT_KEY_CTRL_K, NULL);
gnt_bindable_class_register_action(bindable, "delete-prev-word", del_prev_word,
GNT_KEY_CTRL_W, NULL);
gnt_bindable_register_binding(bindable, "delete-prev-word", s, NULL);
gnt_bindable_class_register_action(bindable, "cursor-prev-word", move_back_word,
"\033" "b", NULL);
gnt_bindable_class_register_action(bindable, "cursor-prev", move_back,
GNT_KEY_LEFT, NULL);
gnt_bindable_register_binding(bindable, "cursor-prev", GNT_KEY_CTRL_B, NULL);
gnt_bindable_class_register_action(bindable, "cursor-next", move_forward,
GNT_KEY_RIGHT, NULL);
gnt_bindable_register_binding(bindable, "cursor-next", GNT_KEY_CTRL_F, NULL);
gnt_bindable_class_register_action(bindable, "cursor-next-word", move_forward_word,
"\033" "f", NULL);
gnt_bindable_class_register_action(bindable, "delete-next-word", delete_forward_word,
"\033" "d", NULL);
gnt_bindable_class_register_action(bindable, "transpose-chars", transpose_chars,
GNT_KEY_CTRL_T, NULL);
gnt_bindable_class_register_action(bindable, "yank", entry_yank,
GNT_KEY_CTRL_Y, NULL);
gnt_bindable_class_register_action(bindable, "suggest-show", suggest_show,
"\t", NULL);
gnt_bindable_class_register_action(bindable, "suggest-next", suggest_next,
GNT_KEY_DOWN, NULL);
gnt_bindable_class_register_action(bindable, "suggest-prev", suggest_prev,
GNT_KEY_UP, NULL);
gnt_bindable_class_register_action(bindable, "suggest-next-page", suggest_next_page,
GNT_KEY_PGDOWN, NULL);
gnt_bindable_class_register_action(bindable, "suggest-prev-page", suggest_prev_page,
GNT_KEY_PGUP, NULL);
gnt_bindable_class_register_action(bindable, "history-next", history_next,
GNT_KEY_CTRL_DOWN, NULL);
gnt_bindable_class_register_action(bindable, "history-prev", history_prev,
GNT_KEY_CTRL_UP, NULL);
gnt_bindable_register_binding(bindable, "history-prev", GNT_KEY_CTRL_P, NULL);
gnt_bindable_register_binding(bindable, "history-next", GNT_KEY_CTRL_N, NULL);
gnt_bindable_class_register_action(bindable, "history-search", history_search,
GNT_KEY_CTRL_R, NULL);
gnt_bindable_class_register_action(bindable, "clipboard-paste", clipboard_paste,
GNT_KEY_CTRL_V, NULL);
gnt_style_read_actions(G_OBJECT_CLASS_TYPE(klass), GNT_BINDABLE_CLASS(klass));
}
static GntEntryKillRing *
new_killring(void)
{
GntEntryKillRing *kr = g_new0(GntEntryKillRing, 1);
kr->buffer = g_string_new(NULL);
return kr;
}
static void
gnt_entry_init(GntEntry *entry)
{
GntWidget *widget = GNT_WIDGET(entry);
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
priv->flag = GNT_ENTRY_FLAG_ALL;
priv->max = 0;
priv->histlength = 0;
priv->history = NULL;
priv->word = TRUE;
priv->always = FALSE;
priv->suggests = NULL;
priv->killring = new_killring();
priv->search = g_new0(GntEntrySearch, 1);
gnt_widget_set_has_border(widget, FALSE);
gnt_widget_set_has_shadow(widget, FALSE);
gnt_widget_set_take_focus(widget, TRUE);
gnt_widget_set_grow_x(widget, TRUE);
gnt_widget_set_minimum_size(widget, 3, 1);
}
/******************************************************************************
* GntEntry API
*****************************************************************************/
GntWidget *gnt_entry_new(const char *text)
{
GntWidget *widget = g_object_new(GNT_TYPE_ENTRY, NULL);
GntEntry *entry = GNT_ENTRY(widget);
gnt_entry_set_text_internal(entry, text);
return widget;
}
static void
gnt_entry_set_text_internal(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = gnt_entry_get_instance_private(entry);
int len;
int scroll, cursor;
if (text && text[0])
{
len = strlen(text);
}
else
{
len = 0;
}
priv->buffer = len + 128;
scroll = priv->scroll - priv->start;
cursor = priv->end - priv->cursor;
g_free(priv->start);
priv->start = g_new0(char, priv->buffer);
if (text) {
snprintf(priv->start, len + 1, "%s", text);
}
priv->end = priv->start + len;
if ((priv->scroll = priv->start + scroll) > priv->end) {
priv->scroll = priv->end;
}
if ((priv->cursor = priv->end - cursor) > priv->end) {
priv->cursor = priv->end;
}
if (gnt_widget_get_mapped(GNT_WIDGET(entry)))
entry_redraw(GNT_WIDGET(entry));
}
void gnt_entry_set_text(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = NULL;
gboolean changed = TRUE;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
if (text == NULL && priv->start == NULL) {
changed = FALSE;
}
if (text && priv->start && g_utf8_collate(text, priv->start) == 0) {
changed = FALSE;
}
gnt_entry_set_text_internal(entry, text);
if (changed)
entry_text_changed(entry);
}
void gnt_entry_set_max(GntEntry *entry, int max)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
priv->max = max;
}
void gnt_entry_set_flag(GntEntry *entry, GntEntryFlag flag)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
priv->flag = flag;
/* XXX: Check the existing string to make sure the flags are respected? */
}
const char *gnt_entry_get_text(GntEntry *entry)
{
GntEntryPrivate *priv = NULL;
g_return_val_if_fail(GNT_IS_ENTRY(entry), NULL);
priv = gnt_entry_get_instance_private(entry);
return priv->start;
}
void gnt_entry_clear(GntEntry *entry)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
gnt_entry_set_text_internal(entry, NULL);
priv->scroll = priv->cursor = priv->end = priv->start;
entry_redraw(GNT_WIDGET(entry));
destroy_suggest(priv);
entry_text_changed(entry);
}
void gnt_entry_set_masked(GntEntry *entry, gboolean set)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
priv->masked = set;
}
void gnt_entry_add_to_history(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
/* Must have called set_history_length first */
g_return_if_fail(priv->history != NULL);
if (priv->histlength >= 0 &&
g_list_length(priv->history) >= (gsize)priv->histlength) {
return;
}
priv->history = g_list_first(priv->history);
g_free(priv->history->data);
priv->history->data = g_strdup(text);
priv->history = g_list_prepend(priv->history, NULL);
}
void gnt_entry_set_history_length(GntEntry *entry, int num)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
if (num == 0)
{
priv->histlength = num;
if (priv->history) {
priv->history = g_list_first(priv->history);
g_list_free_full(priv->history, g_free);
priv->history = NULL;
}
return;
}
if (priv->histlength == 0) {
priv->histlength = num;
priv->history = g_list_append(NULL, NULL);
return;
}
if (num > 0 && num < priv->histlength) {
GList *first, *iter;
int index = 0;
for (first = priv->history, index = 0; first->prev;
first = first->prev, index++) {
/* Nothing. */
}
while ((iter = g_list_nth(first, num)) != NULL)
{
g_free(iter->data);
first = g_list_delete_link(first, iter);
}
priv->histlength = num;
if (index >= num)
priv->history = g_list_last(first);
return;
}
priv->histlength = num;
}
void gnt_entry_set_word_suggest(GntEntry *entry, gboolean word)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
priv->word = word;
}
void gnt_entry_set_always_suggest(GntEntry *entry, gboolean always)
{
GntEntryPrivate *priv = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
priv->always = always;
}
void gnt_entry_add_suggest(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = NULL;
GList *find;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
if (!text || !*text)
return;
find = g_list_find_custom(priv->suggests, text,
(GCompareFunc)g_utf8_collate);
if (find)
return;
priv->suggests = g_list_append(priv->suggests, g_strdup(text));
}
void gnt_entry_remove_suggest(GntEntry *entry, const char *text)
{
GntEntryPrivate *priv = NULL;
GList *find = NULL;
g_return_if_fail(GNT_IS_ENTRY(entry));
priv = gnt_entry_get_instance_private(entry);
find = g_list_find_custom(priv->suggests, text,
(GCompareFunc)g_utf8_collate);
if (find)
{
g_free(find->data);
priv->suggests = g_list_delete_link(priv->suggests, find);
}
}