aboutsummaryrefslogtreecommitdiff
path: root/src/notifications.cpp
blob: 18f15d9657ebc83b1e5d594eaebf3e432009bd7e (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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
/*
 * Copyright 2014 Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3, 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 warranties of
 * MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *   Charles Kerr <charles.kerr@canonical.com>
 */

#include <notifications/notifications.h>

#include <libnotify/notify.h>

#include <map>
#include <set>
#include <string>
#include <vector>

namespace unity {
namespace indicator {
namespace notifications {

static G_DEFINE_QUARK(NotificationKey, notification_key)

static G_DEFINE_QUARK(NotificationAction, notification_action)

/***
****
***/

class Builder::Impl
{
public:
    std::string m_title;
    std::string m_body;
    std::string m_icon_name;
    std::chrono::seconds m_duration;
    std::set<std::string> m_string_hints;
    std::vector<std::pair<std::string,std::string>> m_actions;
    std::function<void(const std::string&)> m_closed_callback;
};

Builder::Builder():
  impl(new Impl())
{
}

Builder::~Builder()
{
}
 
void
Builder::set_title (const std::string& title)
{
  impl->m_title = title;
}

void
Builder::set_body (const std::string& body)
{
  impl->m_body = body;
}

void
Builder::set_icon_name (const std::string& icon_name)
{
  impl->m_icon_name = icon_name;
}

void
Builder::set_timeout (const std::chrono::seconds& duration)
{
  impl->m_duration = duration;
}

void
Builder::add_hint (const std::string& name)
{
  impl->m_string_hints.insert (name);
}

void
Builder::add_action (const std::string& action, const std::string& label)
{
  impl->m_actions.push_back(std::pair<std::string,std::string>(action,label));
}

void
Builder::set_closed_callback (std::function<void (const std::string&)> cb)
{
  impl->m_closed_callback.swap (cb);
}

/***
****
***/

class Engine::Impl
{
    struct notification_data
    {
        std::shared_ptr<NotifyNotification> nn;
        std::function<void(const std::string&)> closed_callback;
    };

public:

    Impl(const std::string& app_name):
        m_app_name(app_name)
    {
        if (!notify_init(app_name.c_str()))
            g_critical("Unable to initialize libnotify!");
    }

    ~Impl()
    {
        close_all ();

        notify_uninit ();
    }

    const std::string& app_name() const
    {
        return m_app_name;
    }

    bool supports_actions() const
    {
        return server_caps().count("actions") != 0;
    }

    void close_all ()
    {
        // call close() on all our keys

        std::set<int> keys;
        for (const auto& it : m_notifications)
            keys.insert (it.first);

        for (const int key : keys)
            close (key);
    }

    void close (int key)
    {
        auto it = m_notifications.find(key);
        if (it != m_notifications.end())
        {
            // tell the server to close the notification
            GError * error = nullptr;
            if (!notify_notification_close (it->second.nn.get(), &error))
            {
                g_warning ("Unable to close notification %d: %s", key, error->message);
                g_error_free (error);
            }
         
            // call the user callback and remove it from our bookkeeping
            remove_closed_notification (key);
        }
    }

    int show (const Builder& builder)
    {
        int ret = -1;
        const auto& info = *builder.impl;

        std::shared_ptr<NotifyNotification> nn (
            notify_notification_new(info.m_title.c_str(),
                                    info.m_body.c_str(),
                                    info.m_icon_name.c_str()),
            [this](NotifyNotification * n) {
                g_signal_handlers_disconnect_by_data(n, this);
                g_object_unref (G_OBJECT(n));
            }
        );

        if (info.m_duration.count() != 0)
        {
            const auto& d= info.m_duration;
            auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(d);

            notify_notification_set_hint (nn.get(),
                                          HINT_TIMEOUT,
                                          g_variant_new_int32(ms.count()));
        }

        for (const auto& hint : info.m_string_hints)
        {
            notify_notification_set_hint (nn.get(),
                                          hint.c_str(),
                                          g_variant_new_boolean(true));
        }

        for (const auto& action : info.m_actions)
        {
            notify_notification_add_action (nn.get(),
                                            action.first.c_str(),
                                            action.second.c_str(),
                                            on_notification_clicked,
                                            nullptr,
                                            nullptr);
        }

        static int next_key = 1;
        const int key = next_key++;
        g_object_set_qdata (G_OBJECT(nn.get()),
                            notification_key_quark(),
                            GINT_TO_POINTER(key));

        m_notifications[key] = { nn, info.m_closed_callback };
        g_signal_connect (nn.get(), "closed",
                          G_CALLBACK(on_notification_closed), this);
     
        GError * error = nullptr;
        if (notify_notification_show(nn.get(), &error))
        {
            ret = key;
        }
        else
        {
            g_critical ("Unable to show notification for '%s': %s",
                        info.m_title.c_str(),
                        error->message);
            g_error_free (error);
            m_notifications.erase(key);
        }

        return ret;
    }

private:

    const std::set<std::string>& server_caps() const
    {
        if (G_UNLIKELY(m_lazy_caps.empty()))
        {
            auto caps_gl = notify_get_server_caps();
            std::string caps_str;
            for(auto l=caps_gl; l!=nullptr; l=l->next)
            {
                m_lazy_caps.insert((const char*)l->data);

                caps_str += (const char*) l->data;;
                if (l->next != nullptr)
                    caps_str += ", ";
            }

            g_debug("%s notify_get_server() returned [%s]", G_STRFUNC, caps_str.c_str());
            g_list_free_full(caps_gl, g_free);
        }

        return m_lazy_caps;
    }

    static void on_notification_clicked (NotifyNotification * nn,
                                         char               * action,
                                         gpointer)
    {
        g_object_set_qdata_full (G_OBJECT(nn),
                                 notification_action_quark(),
                                 g_strdup(action),
                                 g_free);
    }

    static void on_notification_closed (NotifyNotification * nn, gpointer gself)
    {
        const GQuark q = notification_key_quark();
        const gpointer gkey = g_object_get_qdata(G_OBJECT(nn), q);
        static_cast<Impl*>(gself)->remove_closed_notification(GPOINTER_TO_INT(gkey));
    }

    void remove_closed_notification (int key)
    {
        auto it = m_notifications.find(key);
        g_return_if_fail (it != m_notifications.end());

        const auto& ndata = it->second;
        auto nn = ndata.nn.get();
        if (ndata.closed_callback)
        {
            std::string action;

            const GQuark q = notification_action_quark();
            const gpointer p = g_object_get_qdata(G_OBJECT(nn), q);
            if (p != nullptr)
                action = static_cast<const char*>(p);

            ndata.closed_callback (action);
        }

        m_notifications.erase(it);
    }

    /***
    ****
    ***/

    const std::string m_app_name;

    // key-to-data
    std::map<int,notification_data> m_notifications;

    // server capabilities.
    // as the name indicates, don't use this directly: use server_caps() instead
    mutable std::set<std::string> m_lazy_caps;

    static constexpr char const * HINT_TIMEOUT {"x-canonical-snap-decisions-timeout"};
};

/***
****
***/

Engine::Engine(const std::string& app_name):
    impl(new Impl(app_name))
{
}

Engine::~Engine()
{
}

bool
Engine::supports_actions() const
{
    return impl->supports_actions();
}

int
Engine::show(const Builder& builder)
{
    return impl->show(builder);
}

void
Engine::close_all()
{
    impl->close_all();
}

void
Engine::close(int key)
{
    impl->close(key);
}

const std::string&
Engine::app_name() const
{
    return impl->app_name();
}

/***
****
***/

} // namespace notifications
} // namespace indicator
} // namespace unity