aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/table/e-table-selection-model.c
blob: 76983106f6796f7d4edf0185ecf0bad268cc9e7e (plain) (blame)
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
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * e-table-selection-model.c
 * Copyright 2000, 2001, Ximian, Inc.
 *
 * Authors:
 *   Chris Lahey <clahey@ximian.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License, version 2, as published by the Free Software Foundation.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <config.h>

#include <string.h>

#include <gdk/gdkkeysyms.h>

#include <glib/gi18n.h>
#include "e-util/e-util.h"

#include "e-table-selection-model.h"

G_DEFINE_TYPE (ETableSelectionModel, e_table_selection_model, E_SELECTION_MODEL_ARRAY_TYPE)

static gint etsm_get_row_count (ESelectionModelArray *esm);

enum {
    PROP_0,
    PROP_MODEL,
    PROP_HEADER
};

static void
save_to_hash(int model_row, gpointer closure)
{
    ETableSelectionModel *etsm = closure;
    gchar *key = e_table_model_get_save_id(etsm->model, model_row);

    g_hash_table_insert(etsm->hash, key, key);
}

static void
free_key(gpointer key, gpointer value, gpointer closure)
{
    g_free(key);
}

static void
free_hash(ETableSelectionModel *etsm)
{
    if (etsm->hash) {
        g_hash_table_foreach(etsm->hash, free_key, NULL);
        g_hash_table_destroy(etsm->hash);
        etsm->hash = NULL;
    }
    if (etsm->cursor_id)
        g_free(etsm->cursor_id);
    etsm->cursor_id = NULL;
}

static void
model_pre_change (ETableModel *etm, ETableSelectionModel *etsm)
{
    free_hash(etsm);

    if (etsm->model && e_table_model_has_save_id (etsm->model)) {
        gint cursor_row;

        etsm->hash = g_hash_table_new(g_str_hash, g_str_equal);
        e_selection_model_foreach(E_SELECTION_MODEL(etsm), save_to_hash, etsm);

        g_object_get(etsm,
                 "cursor_row", &cursor_row,
                 NULL);
        g_free (etsm->cursor_id);
        if (cursor_row != -1)
            etsm->cursor_id = e_table_model_get_save_id(etm, cursor_row);
        else
            etsm->cursor_id = NULL;
    }
}

static gint
model_changed_idle(ETableSelectionModel *etsm)
{
    ETableModel *etm = etsm->model;

    e_selection_model_clear(E_SELECTION_MODEL(etsm));

    if (etsm->cursor_id && etm && e_table_model_has_save_id(etm)) {
        int row_count = e_table_model_row_count(etm);
        int cursor_row = -1;
        int cursor_col = -1;
        int i;
        e_selection_model_array_confirm_row_count(E_SELECTION_MODEL_ARRAY(etsm));
        for (i = 0; i < row_count; i++) {
            char *save_id = e_table_model_get_save_id(etm, i);
            if (g_hash_table_lookup(etsm->hash, save_id))
                e_selection_model_change_one_row(E_SELECTION_MODEL(etsm), i, TRUE);
            
            if (etsm->cursor_id && !strcmp(etsm->cursor_id, save_id)) {
                cursor_row = i;
                cursor_col = e_selection_model_cursor_col(E_SELECTION_MODEL(etsm));
                if (cursor_col == -1) {
                    if (etsm->eth) {
                        cursor_col = e_table_header_prioritized_column (etsm->eth);
                    } else
                        cursor_col = 0;
                }
                e_selection_model_change_cursor(E_SELECTION_MODEL(etsm), cursor_row, cursor_col);
                g_free(etsm->cursor_id);
                etsm->cursor_id = NULL;
            }
            g_free(save_id);
        }
        free_hash(etsm);
        e_selection_model_cursor_changed (E_SELECTION_MODEL(etsm), cursor_row, cursor_col);
        e_selection_model_selection_changed (E_SELECTION_MODEL(etsm));
    }
    etsm->model_changed_idle_id = 0;
    return FALSE;
}

static void
model_changed(ETableModel *etm, ETableSelectionModel *etsm)
{
    e_selection_model_clear(E_SELECTION_MODEL(etsm));
    if (!etsm->model_changed_idle_id && etm && e_table_model_has_save_id(etm)) {
        etsm->model_changed_idle_id = g_idle_add_full(G_PRIORITY_HIGH, (GSourceFunc) model_changed_idle, etsm, NULL);
    }
}

static void
model_row_changed(ETableModel *etm, int row, ETableSelectionModel *etsm)
{
    free_hash(etsm);
}

static void
model_cell_changed(ETableModel *etm, int col, int row, ETableSelectionModel *etsm)
{
    free_hash(etsm);
}

#if 1
static void
model_rows_inserted(ETableModel *etm, int row, int count, ETableSelectionModel *etsm)
{
    e_selection_model_array_insert_rows(E_SELECTION_MODEL_ARRAY(etsm), row, count);
    free_hash(etsm);
}

static void
model_rows_deleted(ETableModel *etm, int row, int count, ETableSelectionModel *etsm)
{
    e_selection_model_array_delete_rows(E_SELECTION_MODEL_ARRAY(etsm), row, count);
    free_hash(etsm);
}

#else

static void
model_rows_inserted(ETableModel *etm, int row, int count, ETableSelectionModel *etsm)
{
    model_changed(etm, etsm);
}

static void
model_rows_deleted(ETableModel *etm, int row, int count, ETableSelectionModel *etsm)
{
    model_changed(etm, etsm);
}
#endif

inline static void
add_model(ETableSelectionModel *etsm, ETableModel *model)
{
    etsm->model = model;
    if (model) {
        g_object_ref(model);
        etsm->model_pre_change_id = g_signal_connect(G_OBJECT(model), "model_pre_change",
                            G_CALLBACK(model_pre_change), etsm);
        etsm->model_changed_id = g_signal_connect(G_OBJECT(model), "model_changed",
                            G_CALLBACK(model_changed), etsm);
        etsm->model_row_changed_id = g_signal_connect(G_OBJECT(model), "model_row_changed",
                            G_CALLBACK(model_row_changed), etsm);
        etsm->model_cell_changed_id = g_signal_connect(G_OBJECT(model), "model_cell_changed",
                            G_CALLBACK(model_cell_changed), etsm);
        etsm->model_rows_inserted_id = g_signal_connect(G_OBJECT(model), "model_rows_inserted",
                            G_CALLBACK(model_rows_inserted), etsm);
        etsm->model_rows_deleted_id = g_signal_connect(G_OBJECT(model), "model_rows_deleted",
                            G_CALLBACK(model_rows_deleted), etsm);
    }
    e_selection_model_array_confirm_row_count(E_SELECTION_MODEL_ARRAY(etsm));
}

inline static void
drop_model(ETableSelectionModel *etsm)
{
    if (etsm->model) {
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_pre_change_id);
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_changed_id);
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_row_changed_id);
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_cell_changed_id);
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_rows_inserted_id);
        g_signal_handler_disconnect(G_OBJECT(etsm->model),
                        etsm->model_rows_deleted_id);

        g_object_unref(etsm->model);
    }
    etsm->model = NULL;
}

static void
etsm_dispose (GObject *object)
{
    ETableSelectionModel *etsm;

    etsm = E_TABLE_SELECTION_MODEL (object);

    if (etsm->model_changed_idle_id)
        g_source_remove (etsm->model_changed_idle_id);
    etsm->model_changed_idle_id = 0;

    drop_model(etsm);
    free_hash(etsm);

    if (G_OBJECT_CLASS(e_table_selection_model_parent_class)->dispose)
        G_OBJECT_CLASS(e_table_selection_model_parent_class)->dispose (object);
}

static void
etsm_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    ETableSelectionModel *etsm = E_TABLE_SELECTION_MODEL (object);

    switch (prop_id){
    case PROP_MODEL:
        g_value_set_object (value, etsm->model);
        break;
    case PROP_HEADER:
        g_value_set_object (value, etsm->eth);
        break;
    }
}

static void
etsm_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
    ETableSelectionModel *etsm = E_TABLE_SELECTION_MODEL (object);
    
    switch (prop_id){
    case PROP_MODEL:
        drop_model(etsm);
        add_model(etsm, g_value_get_object (value) ? E_TABLE_MODEL(g_value_get_object (value)) : NULL);
        break;
    case PROP_HEADER:
        etsm->eth = E_TABLE_HEADER (g_value_get_object (value));
        break;
    }
}

static void
e_table_selection_model_init (ETableSelectionModel *selection)
{
    selection->model = NULL;
    selection->hash = NULL;
    selection->cursor_id = NULL;

    selection->model_changed_idle_id = 0;
}

static void
e_table_selection_model_class_init (ETableSelectionModelClass *klass)
{
    GObjectClass *object_class;
    ESelectionModelArrayClass *esma_class;

    object_class             = G_OBJECT_CLASS(klass);
    esma_class               = E_SELECTION_MODEL_ARRAY_CLASS(klass);

    object_class->dispose      = etsm_dispose;
    object_class->get_property = etsm_get_property;
    object_class->set_property = etsm_set_property;

    esma_class->get_row_count = etsm_get_row_count;

    g_object_class_install_property (object_class, PROP_MODEL, 
                     g_param_spec_object ("model",
                                  _("Model"),
                                  /*_( */"XXX blurb" /*)*/,
                                  E_TABLE_MODEL_TYPE,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_HEADER, 
                     g_param_spec_object ("header",
                                  _("Header"),
                                  /*_( */"XXX blurb" /*)*/,
                                  E_TABLE_HEADER_TYPE,
                                  G_PARAM_READWRITE));
}

/** 
 * e_table_selection_model_new
 *
 * This routine creates a new #ETableSelectionModel.
 *
 * Returns: The new #ETableSelectionModel.
 */
ETableSelectionModel *
e_table_selection_model_new (void)
{
    return g_object_new (E_TABLE_SELECTION_MODEL_TYPE, NULL);
}

static gint
etsm_get_row_count (ESelectionModelArray *esma)
{
    ETableSelectionModel *etsm = E_TABLE_SELECTION_MODEL(esma);

    if (etsm->model)
        return e_table_model_row_count (etsm->model);
    else
        return 0;
}