Gtk4-tutorial/gfm/sec16.md
2021-06-15 11:24:42 +09:00

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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.

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, 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

 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

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

 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

1 #include <gtk/gtk.h>
2 
3 #include "../tfetextview/tfetextview.h"
4 #include "tfenotebook.h"

tfeapplication.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

 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

  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_WINDOW (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

 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, GtkWindow *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

  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   if (response == GTK_RESPONSE_ACCEPT) {
105     file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
106     if (! G_IS_FILE (file))
107       g_warning ("TfeTextView: gtk_file_chooser_get_file returns non GFile object.\n");
108     else if (save_file(file, tb, GTK_WINDOW (win))) {
109       if (G_IS_FILE (tv->file))
110         g_object_unref (tv->file);
111       tv->file = file;
112       g_signal_emit (tv, tfe_text_view_signals[CHANGE_FILE], 0);
113     }
114   }
115   gtk_window_destroy (GTK_WINDOW (dialog));
116 }
117 
118 void
119 tfe_text_view_save (TfeTextView *tv) {
120   g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
121 
122   GtkTextBuffer *tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
123   GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (tv), GTK_TYPE_WINDOW);
124 
125   if (! gtk_text_buffer_get_modified (tb))
126     return; /* no need to save it */
127   else if (tv->file == NULL)
128     tfe_text_view_saveas (tv);
129   else if (! G_IS_FILE (tv->file))
130     g_error ("TfeTextView: The pointer in this object isn't NULL nor GFile object.\n");
131   else
132     save_file (tv->file, tb, GTK_WINDOW (win));
133 }
134 
135 void
136 tfe_text_view_saveas (TfeTextView *tv) {
137   g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
138 
139   GtkWidget *dialog;
140   GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (tv), GTK_TYPE_WINDOW);
141 
142   dialog = gtk_file_chooser_dialog_new ("Save file", GTK_WINDOW (win), GTK_FILE_CHOOSER_ACTION_SAVE,
143                                       "Cancel", GTK_RESPONSE_CANCEL,
144                                       "Save", GTK_RESPONSE_ACCEPT,
145                                       NULL);
146   g_signal_connect (dialog, "response", G_CALLBACK (saveas_dialog_response), tv);
147   gtk_widget_show (dialog);
148 }
149 
150 GtkWidget *
151 tfe_text_view_new_with_file (GFile *file) {
152   g_return_val_if_fail (G_IS_FILE (file), NULL);
153 
154   GtkWidget *tv;
155   GtkTextBuffer *tb;
156   char *contents;
157   gsize length;
158 
159   if (! g_file_load_contents (file, NULL, &contents, &length, NULL, NULL)) /* read error */
160     return NULL;
161 
162   tv = tfe_text_view_new();
163   tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
164   gtk_text_buffer_set_text (tb, contents, length);
165   g_free (contents);
166   TFE_TEXT_VIEW (tv)->file = g_file_dup (file);
167   return tv;
168 }
169 
170 static void
171 open_dialog_response(GtkWidget *dialog, gint response, TfeTextView *tv) {
172   GtkTextBuffer *tb = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
173   GFile *file;
174   char *contents;
175   gsize length;
176   GtkWidget *message_dialog;
177   GError *err = NULL;
178 
179   if (response != GTK_RESPONSE_ACCEPT)
180     g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_CANCEL);
181   else if (! G_IS_FILE (file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog)))) {
182     g_warning ("TfeTextView: gtk_file_chooser_get_file returns non GFile object.\n");
183     g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_ERROR);
184   } else if (! g_file_load_contents (file, NULL, &contents, &length, NULL, &err)) { /* read error */
185     if (G_IS_FILE (file))
186       g_object_unref (file);
187     message_dialog = gtk_message_dialog_new (GTK_WINDOW (dialog), GTK_DIALOG_MODAL,
188                                              GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
189                                             "%s.\n", err->message);
190     g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
191     gtk_widget_show (message_dialog);
192     g_error_free (err);
193     g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_ERROR);
194   } else {
195     gtk_text_buffer_set_text (tb, contents, length);
196     g_free (contents);
197     if (G_IS_FILE (tv->file))
198       g_object_unref (tv->file);
199     tv->file = file;
200     gtk_text_buffer_set_modified (tb, FALSE);
201     g_signal_emit (tv, tfe_text_view_signals[OPEN_RESPONSE], 0, TFE_OPEN_RESPONSE_SUCCESS);
202     g_signal_emit (tv, tfe_text_view_signals[CHANGE_FILE], 0);
203   }
204   gtk_window_destroy (GTK_WINDOW (dialog));
205 }
206 
207 void
208 tfe_text_view_open (TfeTextView *tv, GtkWindow *win) {
209   g_return_if_fail (TFE_IS_TEXT_VIEW (tv));
210   g_return_if_fail (GTK_IS_WINDOW (win));
211 
212   GtkWidget *dialog;
213 
214   dialog = gtk_file_chooser_dialog_new ("Open file", win, GTK_FILE_CHOOSER_ACTION_OPEN,
215                                         "Cancel", GTK_RESPONSE_CANCEL,
216                                         "Open", GTK_RESPONSE_ACCEPT,
217                                         NULL);
218   g_signal_connect (dialog, "response", G_CALLBACK (open_dialog_response), tv);
219   gtk_widget_show (dialog);
220 }
221 
222 GtkWidget *
223 tfe_text_view_new (void) {
224   return GTK_WIDGET (g_object_new (TFE_TYPE_TEXT_VIEW, NULL));
225 }
226 

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   374  3593 tfe5/tfenotebook.c
   15    21   241 tfe5/tfenotebook.h
  226   677  8023 tfetextview/tfetextview.c
   35    60   701 tfetextview/tfetextview.h
   61   100  2073 tfe5/tfe.ui
  594  1565 18324 total

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