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rockbox/apps/plugins/text_editor.c
Zakk Roberts 0f842a16e5 Fix: don't ask for what file to save to if you 'Save Changes' with a file already opened. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9481 a1c6a512-1295-4272-9138-f99709370657
2006-04-04 02:28:04 +00:00

447 lines
13 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Jonathan Gordon
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
/* button definitions, every keypad must only have select,menu and cancel */
#if CONFIG_KEYPAD == RECORDER_PAD
#define TEXT_EDITOR_SELECT BUTTON_PLAY
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_ITEM_MENU BUTTON_F1
#elif CONFIG_KEYPAD == ONDIO_PAD
#define TEXT_EDITOR_SELECT_PRE BUTTON_MENU
#define TEXT_EDITOR_SELECT (BUTTON_MENU|BUTTON_REL)
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_ITEM_MENU BUTTON_MENU|BUTTON_REPEAT
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define TEXT_EDITOR_SELECT BUTTON_SELECT
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_DELETE BUTTON_REC
#define TEXT_EDITOR_ITEM_MENU BUTTON_MODE
#elif (CONFIG_KEYPAD == IPOD_3G_PAD) || (CONFIG_KEYPAD == IPOD_4G_PAD)
#define TEXT_EDITOR_SELECT_PRE BUTTON_SELECT
#define TEXT_EDITOR_SELECT ( BUTTON_SELECT | BUTTON_REL)
#define TEXT_EDITOR_CANCEL_PRE BUTTON_SELECT
#define TEXT_EDITOR_CANCEL (BUTTON_SELECT | BUTTON_MENU)
#define TEXT_EDITOR_DELETE (BUTTON_LEFT)
#define TEXT_EDITOR_ITEM_MENU (BUTTON_MENU)
#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
#elif CONFIG_KEYPAD == IAUDIO_X5_PAD
#define TEXT_EDITOR_SELECT BUTTON_SELECT
#define TEXT_EDITOR_CANCEL BUTTON_POWER
#define TEXT_EDITOR_ITEM_MENU BUTTON_PLAY
#elif CONFIG_KEYPAD == GIGABEAT_PAD
#else
#error TEXT_EDITOR: Unsupported keypad
#endif
#define MAX_LINE_LEN 128
#if PLUGIN_BUFFER_SIZE > 0x45000
#define MAX_LINES 2048
#else
#define MAX_LINES 128
#endif
PLUGIN_HEADER
static struct plugin_api* rb;
struct LineStruct {
char line[MAX_LINE_LEN];
int prev; /* index to prev item, or -1 */
int next; /* index to next item, or -1 */
};
struct LineStruct lines[MAX_LINES];
int line_count = 0;
int first = -1, last = -1;
int indicies[MAX_LINES];
/**************************** stuff for the linked lists ***************/
int build_indicies(void)
{
int i=0, index = first;
struct LineStruct *line;
if (first==-1)
return 0;
while (i<line_count)
{
indicies[i++] = index;
DEBUGF("%d,",index);
line = &lines[index];
index = line->next;
}
DEBUGF("\n");
return 1;
}
int find_first_free(int start)
{
int i;
if ((start <0) || (start >=MAX_LINES))
start = 0;
i = start;
do
{
if (lines[i].line[0] == '\0')
return i;
i = (i+1)%MAX_LINES;
} while (i!=start);
return -1;
}
int add_line(char *line, int idx_after_me)
{
struct LineStruct *temp;
int next;
int this_idx = find_first_free(idx_after_me);
if ((line_count >= MAX_LINES) || (this_idx == -1))
return -1;
DEBUGF("line:%s ,idx_after_me=%d\n",line,idx_after_me);
if (idx_after_me == -1) /* add as the first item */
{
rb->strcpy(lines[this_idx].line,line);
lines[this_idx].prev = -1;
if (first != -1)
lines[first].prev = this_idx;
lines[this_idx].next = first;
first = this_idx;
if (last == idx_after_me)
last = this_idx;
line_count++;
return 1;
}
temp = &lines[idx_after_me];
next = lines[idx_after_me].next;
temp->next = this_idx;
rb->strcpy(lines[this_idx].line,line);
temp = &lines[this_idx];
temp->next = next;
temp->prev = idx_after_me;
if (last == idx_after_me)
last = this_idx;
if (first == -1)
first = this_idx;
line_count ++;
return this_idx;
}
void del_line(int line)
{
int idx_prev, idx_next;
idx_prev = (&lines[line])->prev;
idx_next = (&lines[line])->next;
lines[line].line[0] = '\0';
lines[idx_prev].next = idx_next;
lines[idx_next].prev = idx_prev;
line_count --;
}
char *list_get_name_cb(int selected_item,void* data,char* buf)
{
(void)data;
rb->strcpy(buf,lines[indicies[selected_item]].line);
return buf;
}
char filename[1024];
void save_changes(int overwrite)
{
int fd;
int i;
if (!filename[0] || !overwrite)
{
rb->strcpy(filename,"/");
rb->kbd_input(filename,1024);
}
fd = rb->open(filename,O_WRONLY|O_CREAT);
if (!fd)
{
rb->splash(HZ*2,1,"Changes NOT saved");
return;
}
rb->lcd_clear_display();
build_indicies();
for (i=0;i<line_count;i++)
{
rb->fdprintf(fd,"%s\n",lines[indicies[i]].line);
}
rb->close(fd);
}
void setup_lists(struct gui_synclist *lists)
{
build_indicies();
rb->gui_synclist_init(lists,list_get_name_cb,0);
rb->gui_synclist_set_icon_callback(lists,NULL);
rb->gui_synclist_set_nb_items(lists,line_count);
rb->gui_synclist_limit_scroll(lists,true);
rb->gui_synclist_select_item(lists, 0);
rb->gui_synclist_draw(lists);
}
enum {
MENU_RET_SAVE = -1,
MENU_RET_NO_UPDATE,
MENU_RET_UPDATE,
};
int do_item_menu(int cur_sel, char* copy_buffer)
{
int m, ret = 0;
static const struct menu_item items[] = {
{ "Cut", NULL },
{ "Copy", NULL },
{ "", NULL },
{ "Insert Above", NULL },
{ "Insert Below", NULL },
{ "", NULL },
{ "Cat To Above",NULL },
/* { "Split Line",NULL }, */
{ "", NULL },
{ "Save", NULL },
};
m = rb->menu_init(items, sizeof(items) / sizeof(*items),
NULL, NULL, NULL, NULL);
switch (rb->menu_show(m))
{
case 0: /* cut */
rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
del_line(indicies[cur_sel]);
ret = MENU_RET_UPDATE;
break;
case 1: /* copy */
rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
ret = MENU_RET_NO_UPDATE;
break;
case 2: /* blank */
ret = MENU_RET_NO_UPDATE;
break;
case 3: /* insert above */
if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
{
add_line(copy_buffer,lines[indicies[cur_sel]].prev);
copy_buffer[0]='\0';
ret = MENU_RET_UPDATE;
}
break;
case 4: /* insert below */
if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
{
add_line(copy_buffer,indicies[cur_sel]);
copy_buffer[0]='\0';
ret = MENU_RET_UPDATE;
}
break;
case 5: /* blank */
ret = MENU_RET_NO_UPDATE;
break;
case 6: /* cat to above */
if (cur_sel>0)
{
rb->strcat(lines[indicies[cur_sel-1]].line,lines[indicies[cur_sel]].line);
del_line(indicies[cur_sel]);
ret = MENU_RET_UPDATE;
}
break;
/* case 7: // split line */
case 7: /* save */
ret = MENU_RET_SAVE;
break;
default:
ret = MENU_RET_NO_UPDATE;
break;
}
rb->menu_exit(m);
return ret;
}
/* this is the plugin entry point */
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int fd;
char temp_line[MAX_LINE_LEN];
struct gui_synclist lists;
bool exit = false;
int button, last_button = BUTTON_NONE;
bool changed = false;
int cur_sel;
char copy_buffer[MAX_LINE_LEN]; copy_buffer[0]='\0';
rb = api;
if (parameter)
{
rb->strcpy(filename,(char*)parameter);
fd = rb->open(filename,O_RDONLY);
if (fd<0)
{
rb->splash(HZ*2,true,"Couldnt open file: %s",(char*)parameter);
return PLUGIN_ERROR;
}
/* read in the file */
while (rb->read_line(fd,temp_line,MAX_LINE_LEN))
{
if (add_line(temp_line,last) < 0)
{
rb->splash(HZ*2,true,"Error reading file: %s",(char*)parameter);
rb->close(fd);
return PLUGIN_ERROR;
}
}
rb->close(fd);
}
else filename[0] = '\0';
/* now dump it in the list */
setup_lists(&lists);
while (!exit)
{
rb->gui_synclist_draw(&lists);
cur_sel = rb->gui_synclist_get_sel_pos(&lists);
button = rb->button_get(true);
if (rb->gui_synclist_do_button(&lists,button))
continue;
switch (button)
{
case TEXT_EDITOR_SELECT:
{
#ifdef TEXT_EDITOR_SELECT_PRE
if (last_button != TEXT_EDITOR_SELECT_PRE)
break;
#endif
char buf[MAX_LINE_LEN];buf[0]='\0';
if (line_count)
rb->strcpy(buf,lines[indicies[cur_sel]].line);
if (!rb->kbd_input(buf,MAX_LINE_LEN))
{
if (line_count)
rb->strcpy(lines[indicies[cur_sel]].line,buf);
else { add_line(buf, first); setup_lists(&lists); }
changed = true;
}
}
break;
#ifdef TEXT_EDITOR_DELETE
case TEXT_EDITOR_DELETE:
#ifdef TEXT_EDITOR_DELETE_PRE
if (last_button != TEXT_EDITOR_DELETE_PRE)
break;
#endif
if (!line_count) break;
rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
del_line(indicies[cur_sel]);
changed = true;
setup_lists(&lists);
break;
#endif
#ifdef TEXT_EDITOR_ITEM_MENU
case TEXT_EDITOR_ITEM_MENU:
#ifdef TEXT_EDITOR_RC_ITEM_MENU
case TEXT_EDITOR_RC_ITEM_MENU:
#endif
#ifdef TEXT_EDITOR_ITEM_MENU_PRE
if (lastbutton != TEXT_EDITOR_ITEM_MENU_PRE
#ifdef TEXT_EDITOR_RC_ITEM_MENU_PRE
&& lastbutton != TEXT_EDITOR_RC_ITEM_MENU_PRE
#endif
)
break;
#endif
{ /* do the item menu */
switch (do_item_menu(cur_sel, copy_buffer))
{
case MENU_RET_SAVE:
save_changes(1);
changed = false;
break;
case MENU_RET_UPDATE:
changed = true;
setup_lists(&lists);
break;
case MENU_RET_NO_UPDATE:
break;
}
}
break;
#endif /* TEXT_EDITOR_ITEM_MENU */
case TEXT_EDITOR_CANCEL:
#ifdef TEXT_EDITOR_CANCEL_PRE
if (last_button != TEXT_EDITOR_CANCEL_PRE)
break;
#endif
if (changed)
{
int m;
int result;
static const struct menu_item items[] = {
{ "Return", NULL },
{ " ", NULL },
{ "Save Changes", NULL },
{ "Save As...", NULL },
{ " ", NULL },
{ "Save and Exit", NULL },
{ "Ignore Changes and Exit", NULL },
};
m = rb->menu_init(items, sizeof(items) / sizeof(*items),
NULL, NULL, NULL, NULL);
result=rb->menu_show(m);
switch (result)
{
case 0:
break;
case 2: //save to disk
save_changes(1);
changed = 0;
break;
case 3:
save_changes(0);
changed = 0;
break;
case 5:
save_changes(1);
exit=1;
break;
case 6:
exit=1;
break;
}
rb->menu_exit(m);
}
else exit=1;
break;
}
last_button = button;
}
return PLUGIN_OK;
}
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