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Gtk4-tutorial/gfm/sec15.md
Toshio Sekiya 8e788b0749 Add tfe6 and insert new section19. Bug fixed.
2021-02-17 23:59:50 +09:00

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Up: [Readme.md](../Readme.md), Prev: [Section 14](sec14.md), Next: [Section 16](sec16.md)
# tfe5 source files
## How to compile and execute tfe text editor.
First, source files are shown in the later subsections.
How to download them is written at the end of the [previous section](../src/sec14.src.md).
The following is the instruction of compilation and execution.
- You need meson and ninja.
- Set necessary environment variables.
If you have installed gtk4 under the instruction in [Section 2](sec2.md), type `. env.sh` to set the environment variables.
- change your current directory to `src/tfe5` directory.
- type `meson _build` for configuration.
- type `ninja -C _build` for compilation.
Then the application `tfe` is build under the `_build` directory.
- type `_build/tfe` to execute it.
Then the window appears.
There are four buttons, `New`, `Open`, `Save` and `Close`.
- Click on `Open` button, then a FileChooserDialog appears.
Choose a file in the list and click on `Open` button.
Then the file is read and a new Notebook Page appears.
- Edit the file and click on `Save` button, then the text is saved to the original file.
- Click `Close`, then the Notebook Page disappears.
- Click `Close` again, then the `Untitled` Notebook Page disappears and at the same time the application quits.
This is a very simple editor.
It is a good practice for you to add more features.
## meson.build
~~~meson
1 project('tfe', 'c')
2
3 gtkdep = dependency('gtk4')
4
5 gnome=import('gnome')
6 resources = gnome.compile_resources('resources','tfe.gresource.xml')
7
8 sourcefiles=files('tfeapplication.c', 'tfenotebook.c', '../tfetextview/tfetextview.c')
9
10 executable('tfe', sourcefiles, resources, dependencies: gtkdep)
~~~
## tfe.gresource.xml
~~~xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <gresources>
3 <gresource prefix="/com/github/ToshioCP/tfe">
4 <file>tfe.ui</file>
5 </gresource>
6 </gresources>
~~~
## tfe.ui
~~~xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <interface>
3 <object class="GtkApplicationWindow" id="win">
4 <property name="title">file editor</property>
5 <property name="default-width">600</property>
6 <property name="default-height">400</property>
7 <child>
8 <object class="GtkBox" id="boxv">
9 <property name="orientation">GTK_ORIENTATION_VERTICAL</property>
10 <child>
11 <object class="GtkBox" id="boxh">
12 <property name="orientation">GTK_ORIENTATION_HORIZONTAL</property>
13 <child>
14 <object class="GtkLabel" id="dmy1">
15 <property name="width-chars">10</property>
16 </object>
17 </child>
18 <child>
19 <object class="GtkButton" id="btnn">
20 <property name="label">New</property>
21 </object>
22 </child>
23 <child>
24 <object class="GtkButton" id="btno">
25 <property name="label">Open</property>
26 </object>
27 </child>
28 <child>
29 <object class="GtkLabel" id="dmy2">
30 <property name="hexpand">TRUE</property>
31 </object>
32 </child>
33 <child>
34 <object class="GtkButton" id="btns">
35 <property name="label">Save</property>
36 </object>
37 </child>
38 <child>
39 <object class="GtkButton" id="btnc">
40 <property name="label">Close</property>
41 </object>
42 </child>
43 <child>
44 <object class="GtkLabel" id="dmy3">
45 <property name="width-chars">10</property>
46 </object>
47 </child>
48 </object>
49 </child>
50 <child>
51 <object class="GtkNotebook" id="nb">
52 <property name="scrollable">TRUE</property>
53 <property name="hexpand">TRUE</property>
54 <property name="vexpand">TRUE</property>
55 </object>
56 </child>
57 </object>
58 </child>
59 </object>
60 </interface>
61
~~~
## tfe.h
~~~C
1 #include <gtk/gtk.h>
2
3 #include "../tfetextview/tfetextview.h"
4 #include "tfenotebook.h"
~~~
## tfeapplication.c
~~~C
1 #include "tfe.h"
2
3 static void
4 open_cb (GtkNotebook *nb) {
5 notebook_page_open (nb);
6 }
7
8 static void
9 new_cb (GtkNotebook *nb) {
10 notebook_page_new (nb);
11 }
12
13 static void
14 save_cb (GtkNotebook *nb) {
15 notebook_page_save (nb);
16 }
17
18 static void
19 close_cb (GtkNotebook *nb) {
20 notebook_page_close (GTK_NOTEBOOK (nb));
21 }
22
23 static void
24 tfe_activate (GApplication *application) {
25 GtkApplication *app = GTK_APPLICATION (application);
26 GtkWidget *win = GTK_WIDGET (gtk_application_get_active_window (app));
27 GtkWidget *boxv = gtk_window_get_child (GTK_WINDOW (win));
28 GtkNotebook *nb = GTK_NOTEBOOK (gtk_widget_get_last_child (boxv));
29
30 notebook_page_new (nb);
31 gtk_widget_show (GTK_WIDGET (win));
32 }
33
34 static void
35 tfe_open (GApplication *application, GFile ** files, gint n_files, const gchar *hint) {
36 GtkApplication *app = GTK_APPLICATION (application);
37 GtkWidget *win = GTK_WIDGET (gtk_application_get_active_window (app));
38 GtkWidget *boxv = gtk_window_get_child (GTK_WINDOW (win));
39 GtkNotebook *nb = GTK_NOTEBOOK (gtk_widget_get_last_child (boxv));
40 int i;
41
42 for (i = 0; i < n_files; i++)
43 notebook_page_new_with_file (nb, files[i]);
44 if (gtk_notebook_get_n_pages (nb) == 0)
45 notebook_page_new (nb);
46 gtk_widget_show (win);
47 }
48
49 static void
50 tfe_startup (GApplication *application) {
51 GtkApplication *app = GTK_APPLICATION (application);
52 GtkBuilder *build;
53 GtkApplicationWindow *win;
54 GtkNotebook *nb;
55 GtkButton *btno;
56 GtkButton *btnn;
57 GtkButton *btns;
58 GtkButton *btnc;
59
60 build = gtk_builder_new_from_resource ("/com/github/ToshioCP/tfe/tfe.ui");
61 win = GTK_APPLICATION_WINDOW (gtk_builder_get_object (build, "win"));
62 nb = GTK_NOTEBOOK (gtk_builder_get_object (build, "nb"));
63 gtk_window_set_application (GTK_WINDOW (win), app);
64 btno = GTK_BUTTON (gtk_builder_get_object (build, "btno"));
65 btnn = GTK_BUTTON (gtk_builder_get_object (build, "btnn"));
66 btns = GTK_BUTTON (gtk_builder_get_object (build, "btns"));
67 btnc = GTK_BUTTON (gtk_builder_get_object (build, "btnc"));
68 g_signal_connect_swapped (btno, "clicked", G_CALLBACK (open_cb), nb);
69 g_signal_connect_swapped (btnn, "clicked", G_CALLBACK (new_cb), nb);
70 g_signal_connect_swapped (btns, "clicked", G_CALLBACK (save_cb), nb);
71 g_signal_connect_swapped (btnc, "clicked", G_CALLBACK (close_cb), nb);
72 g_object_unref(build);
73
74 GdkDisplay *display;
75
76 display = gtk_widget_get_display (GTK_WIDGET (win));
77 GtkCssProvider *provider = gtk_css_provider_new ();
78 gtk_css_provider_load_from_data (provider, "textview {padding: 10px; font-family: monospace; font-size: 12pt;}", -1);
79 gtk_style_context_add_provider_for_display (display, GTK_STYLE_PROVIDER (provider), GTK_STYLE_PROVIDER_PRIORITY_USER);
80 }
81
82 int
83 main (int argc, char **argv) {
84 GtkApplication *app;
85 int stat;
86
87 app = gtk_application_new ("com.github.ToshioCP.tfe", G_APPLICATION_HANDLES_OPEN);
88
89 g_signal_connect (app, "startup", G_CALLBACK (tfe_startup), NULL);
90 g_signal_connect (app, "activate", G_CALLBACK (tfe_activate), NULL);
91 g_signal_connect (app, "open", G_CALLBACK (tfe_open), NULL);
92
93 stat =g_application_run (G_APPLICATION (app), argc, argv);
94 g_object_unref (app);
95 return stat;
96 }
97
~~~
## tfenotebook.h
~~~C
1 void
2 notebook_page_save(GtkNotebook *nb);
3
4 void
5 notebook_page_close (GtkNotebook *nb);
6
7 void
8 notebook_page_open (GtkNotebook *nb);
9
10 void
11 notebook_page_new_with_file (GtkNotebook *nb, GFile *file);
12
13 void
14 notebook_page_new (GtkNotebook *nb);
15
~~~
## tfenotebook.c
~~~C
1 #include "tfe.h"
2
3 /* The returned string should be freed with g_free() when no longer needed. */
4 static gchar*
5 get_untitled () {
6 static int c = -1;
7 if (++c == 0)
8 return g_strdup_printf("Untitled");
9 else
10 return g_strdup_printf ("Untitled%u", c);
11 }
12
13 static TfeTextView *
14 get_current_textview (GtkNotebook *nb) {
15 int i;
16 GtkWidget *scr;
17 GtkWidget *tv;
18
19 i = gtk_notebook_get_current_page (nb);
20 scr = gtk_notebook_get_nth_page (nb, i);
21 tv = gtk_scrolled_window_get_child (GTK_SCROLLED_WINDOW (scr));
22 return TFE_TEXT_VIEW (tv);
23 }
24
25 static void
26 file_changed_cb (TfeTextView *tv, GtkNotebook *nb) {
27 GtkWidget *scr;
28 GtkWidget *label;
29 GFile *file;
30 char *filename;
31
32 file = tfe_text_view_get_file (tv);
33 scr = gtk_widget_get_parent (GTK_WIDGET (tv));
34 if (G_IS_FILE (file)) {
35 filename = g_file_get_basename (file);
36 g_object_unref (file);
37 } else
38 filename = get_untitled ();
39 label = gtk_label_new (filename);
40 gtk_notebook_set_tab_label (nb, scr, label);
41 }
42
43 void
44 notebook_page_save (GtkNotebook *nb) {
45 g_return_if_fail(GTK_IS_NOTEBOOK (nb));
46
47 TfeTextView *tv;
48
49 tv = get_current_textview (nb);
50 tfe_text_view_save (TFE_TEXT_VIEW (tv));
51 }
52
53 void
54 notebook_page_close (GtkNotebook *nb) {
55 g_return_if_fail(GTK_IS_NOTEBOOK (nb));
56
57 GtkWidget *win;
58 int i;
59
60 if (gtk_notebook_get_n_pages (nb) == 1) {
61 win = gtk_widget_get_ancestor (GTK_WIDGET (nb), GTK_TYPE_WINDOW);
62 gtk_window_destroy(GTK_WINDOW (win));
63 } else {
64 i = gtk_notebook_get_current_page (nb);
65 gtk_notebook_remove_page (GTK_NOTEBOOK (nb), i);
66 }
67 }
68
69 static void
70 notebook_page_build (GtkNotebook *nb, GtkWidget *tv, char *filename) {
71 GtkWidget *scr = gtk_scrolled_window_new ();
72 GtkNotebookPage *nbp;
73 GtkWidget *lab;
74 int i;
75
76 gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (tv), GTK_WRAP_WORD_CHAR);
77 gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scr), tv);
78 lab = gtk_label_new (filename);
79 i = gtk_notebook_append_page (nb, scr, lab);
80 nbp = gtk_notebook_get_page (nb, scr);
81 g_object_set (nbp, "tab-expand", TRUE, NULL);
82 gtk_notebook_set_current_page (nb, i);
83 g_signal_connect (GTK_TEXT_VIEW (tv), "change-file", G_CALLBACK (file_changed_cb), nb);
84 }
85
86 static void
87 open_response (TfeTextView *tv, int response, GtkNotebook *nb) {
88 GFile *file;
89 char *filename;
90
91 if (response != TFE_OPEN_RESPONSE_SUCCESS) {
92 g_object_ref_sink (tv);
93 g_object_unref (tv);
94 }else if (! G_IS_FILE (file = tfe_text_view_get_file (tv))) {
95 g_object_ref_sink (tv);
96 g_object_unref (tv);
97 }else {
98 filename = g_file_get_basename (file);
99 g_object_unref (file);
100 notebook_page_build (nb, GTK_WIDGET (tv), filename);
101 }
102 }
103
104 void
105 notebook_page_open (GtkNotebook *nb) {
106 g_return_if_fail(GTK_IS_NOTEBOOK (nb));
107
108 GtkWidget *tv;
109
110 tv = tfe_text_view_new ();
111 g_signal_connect (TFE_TEXT_VIEW (tv), "open-response", G_CALLBACK (open_response), nb);
112 tfe_text_view_open (TFE_TEXT_VIEW (tv), gtk_widget_get_ancestor (GTK_WIDGET (nb), GTK_TYPE_WINDOW));
113 }
114
115 void
116 notebook_page_new_with_file (GtkNotebook *nb, GFile *file) {
117 g_return_if_fail(GTK_IS_NOTEBOOK (nb));
118 g_return_if_fail(G_IS_FILE (file));
119
120 GtkWidget *tv;
121 char *filename;
122
123 if ((tv = tfe_text_view_new_with_file (file)) == NULL)
124 return; /* read error */
125 filename = g_file_get_basename (file);
126 notebook_page_build (nb, tv, filename);
127 }
128
129 void
130 notebook_page_new (GtkNotebook *nb) {
131 g_return_if_fail(GTK_IS_NOTEBOOK (nb));
132
133 GtkWidget *tv;
134 char *filename;
135
136 tv = tfe_text_view_new ();
137 filename = get_untitled ();
138 notebook_page_build (nb, tv, filename);
139 }
140
~~~
## tfetextview.h
~~~C
1 #ifndef __TFE_TEXT_VIEW_H__
2 #define __TFE_TEXT_VIEW_H__
3
4 #include <gtk/gtk.h>
5
6 #define TFE_TYPE_TEXT_VIEW tfe_text_view_get_type ()
7 G_DECLARE_FINAL_TYPE (TfeTextView, tfe_text_view, TFE, TEXT_VIEW, GtkTextView)
8
9 /* "open-response" signal response */
10 enum TfeTextViewOpenResponseType
11 {
12 TFE_OPEN_RESPONSE_SUCCESS,
13 TFE_OPEN_RESPONSE_CANCEL,
14 TFE_OPEN_RESPONSE_ERROR
15 };
16
17 GFile *
18 tfe_text_view_get_file (TfeTextView *tv);
19
20 void
21 tfe_text_view_open (TfeTextView *tv, GtkWidget *win);
22
23 void
24 tfe_text_view_save (TfeTextView *tv);
25
26 void
27 tfe_text_view_saveas (TfeTextView *tv);
28
29 GtkWidget *
30 tfe_text_view_new_with_file (GFile *file);
31
32 GtkWidget *
33 tfe_text_view_new (void);
34
35 #endif /* __TFE_TEXT_VIEW_H__ */
~~~
## tfetextview.c
~~~C
1 #include <string.h>
2 #include "tfetextview.h"
3
4 struct _TfeTextView
5 {
6 GtkTextView parent;
7 GFile *file;
8 };
9
10 G_DEFINE_TYPE (TfeTextView, tfe_text_view, GTK_TYPE_TEXT_VIEW);
11
12 enum {
13 CHANGE_FILE,
14 OPEN_RESPONSE,
15 NUMBER_OF_SIGNALS
16 };
17
18 static guint tfe_text_view_signals[NUMBER_OF_SIGNALS];
19
20 static void
21 tfe_text_view_dispose (GObject *gobject) {
22 TfeTextView *tv = TFE_TEXT_VIEW (gobject);
23
24 if (G_IS_FILE (tv->file))
25 g_clear_object (&tv->file);
26
27 G_OBJECT_CLASS (tfe_text_view_parent_class)->dispose (gobject);
28 }
29
30 static void
31 tfe_text_view_init (TfeTextView *tv) {
32 tv->file = NULL;
33 }
34
35 static void
36 tfe_text_view_class_init (TfeTextViewClass *class) {
37 GObjectClass *object_class = G_OBJECT_CLASS (class);
38
39 object_class->dispose = tfe_text_view_dispose;
40 tfe_text_view_signals[CHANGE_FILE] = g_signal_newv ("change-file",
41 G_TYPE_FROM_CLASS (class),
42 G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
43 NULL /* closure */,
44 NULL /* accumulator */,
45 NULL /* accumulator data */,
46 NULL /* C marshaller */,
47 G_TYPE_NONE /* return_type */,
48 0 /* n_params */,
49 NULL /* param_types */);
50 GType param_types[] = {G_TYPE_INT};
51 tfe_text_view_signals[OPEN_RESPONSE] = g_signal_newv ("open-response",
52 G_TYPE_FROM_CLASS (class),
53 G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
54 NULL /* closure */,
55 NULL /* accumulator */,
56 NULL /* accumulator data */,
57 NULL /* C marshaller */,
58 G_TYPE_NONE /* return_type */,
59 1 /* n_params */,
60 param_types);
61 }
62
63 GFile *
64 tfe_text_view_get_file (TfeTextView *tv) {
65 g_return_val_if_fail (TFE_IS_TEXT_VIEW (tv), NULL);
66
67 if (G_IS_FILE (tv->file))
68 return g_file_dup (tv->file);
69 else
70 return NULL;
71 }
72
73 static gboolean
74 save_file (GFile *file, GtkTextBuffer *tb, GtkWindow *win) {
75 GtkTextIter start_iter;
76 GtkTextIter end_iter;
77 gchar *contents;
78 GtkWidget *message_dialog;
79 GError *err = NULL;
80
81 /* This function doesn't check G_IS_FILE (file). The caller should check it. */
82 gtk_text_buffer_get_bounds (tb, &start_iter, &end_iter);
83 contents = gtk_text_buffer_get_text (tb, &start_iter, &end_iter, FALSE);
84 if (g_file_replace_contents (file, contents, strlen (contents), NULL, TRUE, G_FILE_CREATE_NONE, NULL, NULL, &err)) {
85 gtk_text_buffer_set_modified (tb, FALSE);
86 return TRUE;
87 } else {
88 message_dialog = gtk_message_dialog_new (win, GTK_DIALOG_MODAL,
89 GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
90 "%s.\n", err->message);
91 g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
92 gtk_widget_show (message_dialog);
93 g_error_free (err);
94 return FALSE;
95 }
96 }
97
98 static void
99 saveas_dialog_response (GtkWidget *dialog, gint response, TfeTextView *tv) {
100 GtkTextBuffer *tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
101 GFile *file;
102 GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (tv), GTK_TYPE_WINDOW);
103
104 gtk_window_destroy (GTK_WINDOW (dialog));
105 if (response == GTK_RESPONSE_ACCEPT) {
106 file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
107 if (! G_IS_FILE (file))
108 g_warning ("TfeTextView: gtk_file_chooser_get_file returns non GFile object.\n");
109 else {
110 save_file(file, tb, GTK_WINDOW (win));
111 if (G_IS_FILE (tv->file))
112 g_object_unref (tv->file);
113 tv->file = file;
114 gtk_text_buffer_set_modified (tb, FALSE);
115 g_signal_emit (tv, tfe_text_view_signals[CHANGE_FILE], 0);
116 }
117 }
118 }
119
120 void
121 tfe_text_view_save (TfeTextView *tv) {
122 g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
123
124 GtkTextBuffer *tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
125 GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (tv), GTK_TYPE_WINDOW);
126
127 if (! gtk_text_buffer_get_modified (tb))
128 return; /* no need to save it */
129 else if (tv->file == NULL)
130 tfe_text_view_saveas (tv);
131 else if (! G_IS_FILE (tv->file))
132 g_error ("TfeTextView: The pointer in this object isn't NULL nor GFile object.\n");
133 else {
134 if (save_file (tv->file, tb, GTK_WINDOW (win)))
135 gtk_text_buffer_set_modified (tb, FALSE);
136 }
137 }
138
139 void
140 tfe_text_view_saveas (TfeTextView *tv) {
141 g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
142
143 GtkWidget *dialog;
144 GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (tv), GTK_TYPE_WINDOW);
145
146 dialog = gtk_file_chooser_dialog_new ("Save file", GTK_WINDOW (win), GTK_FILE_CHOOSER_ACTION_SAVE,
147 "Cancel", GTK_RESPONSE_CANCEL,
148 "Save", GTK_RESPONSE_ACCEPT,
149 NULL);
150 g_signal_connect (dialog, "response", G_CALLBACK (saveas_dialog_response), tv);
151 gtk_widget_show (dialog);
152 }
153
154 GtkWidget *
155 tfe_text_view_new_with_file (GFile *file) {
156 g_return_val_if_fail (G_IS_FILE (file), NULL);
157
158 GtkWidget *tv;
159 GtkTextBuffer *tb;
160 char *contents;
161 gsize length;
162
163 if (! g_file_load_contents (file, NULL, &contents, &length, NULL, NULL)) /* read error */
164 return NULL;
165
166 tv = tfe_text_view_new();
167 tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
168 gtk_text_buffer_set_text (tb, contents, length);
169 g_free (contents);
170 TFE_TEXT_VIEW (tv)->file = g_file_dup (file);
171 return tv;
172 }
173
174 static void
175 open_dialog_response(GtkWidget *dialog, gint response, TfeTextView *tv) {
176 GtkTextBuffer *tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
177 GFile *file;
178 char *contents;
179 gsize length;
180 GtkWidget *message_dialog;
181 GError *err = NULL;
182
183 if (response != GTK_RESPONSE_ACCEPT)
184 g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_CANCEL);
185 else if (! G_IS_FILE (file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog)))) {
186 g_warning ("TfeTextView: gtk_file_chooser_get_file returns non GFile object.\n");
187 g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_ERROR);
188 } else if (! g_file_load_contents (file, NULL, &contents, &length, NULL, &err)) { /* read error */
189 if (G_IS_FILE (file))
190 g_object_unref (file);
191 message_dialog = gtk_message_dialog_new (GTK_WINDOW (dialog), GTK_DIALOG_MODAL,
192 GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
193 "%s.\n", err->message);
194 g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
195 gtk_widget_show (message_dialog);
196 g_error_free (err);
197 g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_ERROR);
198 } else {
199 gtk_text_buffer_set_text (tb, contents, length);
200 g_free (contents);
201 if (G_IS_FILE (tv->file))
202 g_object_unref (tv->file);
203 tv->file = file;
204 gtk_text_buffer_set_modified (tb, FALSE);
205 g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_SUCCESS);
206 g_signal_emit (tv, tfe_text_view_signals[CHANGE_FILE], 0);
207 }
208 gtk_window_destroy (GTK_WINDOW (dialog));
209 }
210
211 void
212 tfe_text_view_open (TfeTextView *tv, GtkWidget *win) {
213 g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
214 g_return_if_fail (GTK_IS_WINDOW (win));
215
216 GtkWidget *dialog;
217
218 dialog = gtk_file_chooser_dialog_new ("Open file", GTK_WINDOW (win), GTK_FILE_CHOOSER_ACTION_OPEN,
219 "Cancel", GTK_RESPONSE_CANCEL,
220 "Open", GTK_RESPONSE_ACCEPT,
221 NULL);
222 g_signal_connect (dialog, "response", G_CALLBACK (open_dialog_response), tv);
223 gtk_widget_show (dialog);
224 }
225
226 GtkWidget *
227 tfe_text_view_new (void) {
228 return GTK_WIDGET (g_object_new (TFE_TYPE_TEXT_VIEW, NULL));
229 }
230
~~~
## Total number of lines, words and characters
~~~
$ LANG=C wc tfe5/meson.build tfe5/tfeapplication.c tfe5/tfe.gresource.xml tfe5/tfe.h tfe5/tfenotebook.c tfe5/tfenotebook.h tfetextview/tfetextview.c tfetextview/tfetextview.h tfe5/tfe.ui
10 17 294 tfe5/meson.build
97 301 3159 tfe5/tfeapplication.c
6 9 153 tfe5/tfe.gresource.xml
4 6 87 tfe5/tfe.h
140 373 3580 tfe5/tfenotebook.c
15 21 241 tfe5/tfenotebook.h
230 686 8144 tfetextview/tfetextview.c
35 60 701 tfetextview/tfetextview.h
61 100 2073 tfe5/tfe.ui
598 1573 18432 total
~~~
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