summaryrefslogtreecommitdiffstats
path: root/apps/plugins/shortcuts/shortcuts_view.c
blob: cfc9d8d7461fc2c56b34fdfb704aab930f1c9bb0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2007 Bryan Childs
 * Copyright (c) 2007 Alexander Levin
 *
 * This program 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include "shortcuts.h"



enum sc_list_action_type
{
    SCLA_NONE,
    SCLA_SELECT,
    SCLA_DELETE,
    SCLA_USB,
};


static char *link_filename;
static bool user_file;
static bool usb_connected = false;

enum sc_list_action_type draw_sc_list(struct gui_synclist *gui_sc);

/* Will be passed sc_file* as data */
static const char* build_sc_list(int selected_item, void *data,
                                 char *buffer, size_t buffer_len);

/* Returns true iff we should leave the main loop */
bool list_sc(void);

bool goto_entry(char *file_or_dir);
bool ends_with(char *str, char *suffix);


enum sc_list_action_type draw_sc_list(struct gui_synclist *gui_sc)
{
    int button;

    rb->gui_synclist_draw(gui_sc);

    while (true) {
        /* user input */
        button = rb->get_action(CONTEXT_LIST, HZ);
        /* HZ so the status bar redraws corectly */
        if (rb->gui_synclist_do_button(gui_sc, &button,
                                            LIST_WRAP_UNLESS_HELD)) {
            /* automatic handling of user input.
            * _UNLESS_HELD can be _ON or _OFF also
            * selection changed, so redraw */
            continue;
        }
        switch (button) { /* process the user input */
            case ACTION_STD_OK:
                return SCLA_SELECT;
            case ACTION_STD_MENU:
                /* Only allow delete entries in the default file
                 * since entries can be appended (with a plugin)
                 * to the default file only. The behaviour is thus
                 * symmetric in this respect. */
                if (!user_file) {
                    return SCLA_DELETE;
                }
                break;
            case ACTION_STD_CANCEL:
                return SCLA_NONE;
            default:
                if (rb->default_event_handler(button) == SYS_USB_CONNECTED) {
                    return SCLA_USB;
                }
        }
    }
}


static const char* build_sc_list(int selected_item, void *data,
                                 char *buffer, size_t buffer_len)
{
    sc_file_t *file = (sc_file_t*)data;

    if (!is_valid_index(file, selected_item)) {
        return NULL;
    }
    sc_entry_t *entry = file->entries + selected_item;
    rb->snprintf(buffer, buffer_len, "%s", entry->disp);
    return buffer;
}


bool list_sc(void)
{
    int selected_item = 0;
    enum sc_list_action_type action = SCLA_NONE;
    struct gui_synclist gui_sc;

    /* Setup the GUI list object, draw it to the screen,
     * and then handle the user input to it */
    rb->gui_synclist_init(&gui_sc, &build_sc_list, &sc_file, false, 1, NULL);
    rb->gui_synclist_set_title(&gui_sc,
        (user_file?"Shortcuts (sealed)":"Shortcuts (editable)"), NOICON);
    rb->gui_synclist_set_nb_items(&gui_sc, sc_file.entry_cnt);
    rb->gui_synclist_limit_scroll(&gui_sc, false);
    rb->gui_synclist_select_item(&gui_sc, 0);

    /* Draw the prepared widget to the LCD now */
    action = draw_sc_list(&gui_sc);
    if (action == SCLA_USB) {
        usb_connected = true;
        return true;
    }

    /* which item do we action? */
    selected_item = rb->gui_synclist_get_sel_pos(&gui_sc);

    if (!is_valid_index(&sc_file, selected_item)) {
        /* This should never happen */
        rb->splash(HZ*2, "Bad entry selected!");
        return true;
    }

    /* perform the following actions if the user "selected"
     * the item in the list (i.e. they want to go there
     * in the filebrowser tree */
    switch(action) {
        case SCLA_SELECT:
            return goto_entry(sc_file.entries[selected_item].path);
        case SCLA_DELETE:
            rb->splashf(HZ, "Deleting %s", sc_file.entries[selected_item].disp);
            remove_entry(&sc_file, selected_item);
            dump_sc_file(&sc_file, link_filename);
            return (sc_file.entry_cnt == 0);
        default:
            return true;
    }
}


bool goto_entry(char *file_or_dir)
{
    DEBUGF("Trying to go to '%s'...\n", file_or_dir);

    bool is_dir = ends_with(file_or_dir, PATH_SEPARATOR);
    bool exists;
    char *what;
    if (is_dir) {
        what = "Directory";
        exists = rb->dir_exists(file_or_dir);
    } else {
        what = "File";
        exists = rb->file_exists(file_or_dir);
    }

    if (!exists) {
        rb->splashf(HZ*2, "%s %s no longer exists on disk", what, file_or_dir);
        return false;
    }
    /* Set the browsers dirfilter to the global setting
     * This is required in case the plugin was launched
     * from the plugins browser, in which case the
     * dirfilter is set to only display .rock files */
    rb->set_dirfilter(rb->global_settings->dirfilter);

    /* Change directory to the entry selected by the user */
    rb->set_current_file(file_or_dir);
    return true;
}


bool ends_with(char *string, char *suffix)
{
    unsigned int str_len = rb->strlen(string);
    unsigned int sfx_len = rb->strlen(suffix);
    if (str_len < sfx_len)
        return false;
    return (rb->strncmp(string + str_len - sfx_len, suffix, sfx_len) == 0);
}


enum plugin_status plugin_start(const void* void_parameter)
{
    bool leave_loop;

    /* This is a viewer, so a parameter must have been specified */
    if (void_parameter == NULL) {
        rb->splash(HZ*2, "No parameter specified!");
        return PLUGIN_ERROR;
    }
    link_filename = (char*)void_parameter;
    user_file = (rb->strcmp(link_filename, SHORTCUTS_FILENAME) != 0);

    allocate_memory(&memory_buf, &memory_bufsize);

    if (!load_sc_file(&sc_file, link_filename, true,
            memory_buf, memory_bufsize)) {
        DEBUGF("Could not load %s\n", link_filename);
        return PLUGIN_ERROR;
    }
    if (sc_file.entry_cnt==0) {
        rb->splash(HZ*2, "No shortcuts in the file!");
        return PLUGIN_OK;
    } else if ((sc_file.entry_cnt==1) && user_file) {
        /* if there's only one entry in the user .link file,
         * go straight to it without displaying the menu
         * thus allowing 'quick links' */
        goto_entry(sc_file.entries[0].path);
        return PLUGIN_OK;
    }

    FOR_NB_SCREENS(i)
        rb->viewportmanager_theme_enable(i, true, NULL);

    do {
        /* Display a menu to choose between the entries */
        leave_loop = list_sc();
    } while (!leave_loop);

    FOR_NB_SCREENS(i)
        rb->viewportmanager_theme_undo(i, false);

    return usb_connected ? PLUGIN_USB_CONNECTED : PLUGIN_OK;
}