Add "Delete" button to detail window

* src/data.c (data_delete_manga): New function, deletes a manga and
  its associated volumes.
  (data_update_manga): Extra free.

* src/eom-detail-window.c (add_menu): Add a "Delete" button to the
  menu.
  (on_delete): New function.  Shows a confirmation dialog and if the
  user pressed "Ok" tries to delete the manga and close the window.

* src/eom-main-window.c (on_row_activated): Connect to the `hide'
  signal instead of the `delete-event' signal.  I couldn't find how te
  emit my own `delete-event' signal, then I found that hide works both
  when I close a window and when the window manager does it.

src/data.c

@@ -57,6 +57,25 @@ data_add_volume_to_manga(gint manga_id, gint volume)
     return ret;
 }
 
+gboolean
+data_delete_manga(gint manga_id)
+{
+    char *sql = g_strdup_printf("DELETE FROM volume "
+                                "WHERE manga_id = %d", manga_id);
+    gboolean ret = execute_non_query(sql);
+
+    g_free(sql);
+
+    if (ret) {
+        sql = g_strdup_printf("DELETE FROM manga "
+                              "WHERE id = %d", manga_id);
+        ret = execute_non_query(sql);
+        g_free(sql);
+    }
+
+    return ret;
+}
+
 GList *
 data_get_incomplete_manga(void)
 {
@@ -255,6 +274,7 @@ data_update_manga(gint manga_id, const gchar *name, gint total_qty)
                               "AND id > %d",
                               manga_id, total_qty);
         ret = execute_non_query(sql);
+        g_free(sql);
     }
 
     return ret;

src/data.h

@@ -22,6 +22,7 @@ typedef struct
 gboolean data_add_manga(const gchar*, gint);
 gboolean data_add_to_manga(gint, gint);
 gboolean data_add_volume_to_manga(gint, gint);
+gboolean data_delete_manga(gint);
 GList *data_get_incomplete_manga(void);
 GList *data_get_manga(void);
 Manga *data_get_manga_by_id(gint);

src/eom-detail-window.c

@@ -24,6 +24,7 @@ static void eom_detail_window_class_init(EomDetailWindowClass*);
 static void eom_detail_window_init(EomDetailWindow *self);
 static void finalize(GObject*);
 static void get_property(GObject*, guint, GValue*, GParamSpec*);
+static void on_delete(GtkWidget*, gpointer);
 static void on_edit(GtkWidget*, EomDetailWindow*);
 static void on_volume_read_toggled(GtkToggleButton*, gpointer);
 static void on_volume_toggled(GtkToggleButton*, gpointer);
@@ -102,18 +103,26 @@ static void
 add_menu(EomDetailWindow *window)
 {
     HildonAppMenu *appmenu;
-    GtkWidget *edit_button;
+    GtkWidget *button;
 
     appmenu = HILDON_APP_MENU(hildon_app_menu_new());
 
-    edit_button = hildon_gtk_button_new(HILDON_SIZE_AUTO);
+    button = hildon_gtk_button_new(HILDON_SIZE_AUTO);
-    gtk_button_set_label(GTK_BUTTON(edit_button), "Edit...");
+    gtk_button_set_label(GTK_BUTTON(button), "Edit...");
-    g_signal_connect_after(edit_button, "clicked", G_CALLBACK(on_edit),
+    g_signal_connect_after(button, "clicked", G_CALLBACK(on_edit),
                            window);
-    hildon_app_menu_append(appmenu, GTK_BUTTON(edit_button));
+    hildon_app_menu_append(appmenu, GTK_BUTTON(button));
+
+    button = hildon_gtk_button_new(HILDON_SIZE_AUTO);
+    gtk_button_set_label(GTK_BUTTON(button), "Delete...");
+    g_signal_connect_after(button, "clicked", G_CALLBACK(on_delete),
+                           (gpointer)window);
+    hildon_app_menu_append(appmenu, GTK_BUTTON(button));
+
     gtk_widget_show_all(GTK_WIDGET(appmenu));
-    hildon_stackable_window_set_main_menu(HILDON_STACKABLE_WINDOW(window),
+    hildon_stackable_window_set_main_menu(
-                                          HILDON_APP_MENU(appmenu));
+        HILDON_STACKABLE_WINDOW(window), appmenu
+    );
 }
 
 static void
@@ -223,6 +232,42 @@ get_property(GObject *object, guint property_id, GValue *value,
     }
 }
 
+static void
+on_delete(GtkWidget *widget, gpointer user_data)
+{
+    GtkWidget *dialog, *label, *content_area;
+    EomDetailWindow *self = EOM_DETAIL_WINDOW(user_data);
+    gint result;
+    gchar *ttxt, *ctxt;
+
+    ttxt = g_strdup_printf("Delete %s", self->manga->name);
+    ctxt = g_strdup_printf("Really delete \"%s\"?", self->manga->name);
+    dialog = gtk_dialog_new_with_buttons(
+        ttxt, GTK_WINDOW(self), GTK_DIALOG_MODAL,
+        GTK_STOCK_OK, GTK_RESPONSE_OK,
+        GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
+        NULL
+    );
+    content_area = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
+    label = gtk_label_new(ctxt);
+
+    gtk_container_add(GTK_CONTAINER(content_area), label);
+    gtk_widget_show(label);
+
+    result = gtk_dialog_run(GTK_DIALOG(dialog));
+
+    gtk_widget_destroy(dialog);
+    g_free(ttxt);
+    g_free(ctxt);
+
+    if (result == GTK_RESPONSE_OK) {
+        if (data_delete_manga(self->manga->id)) {
+            gtk_widget_hide(GTK_WIDGET(self));
+            gtk_widget_destroy(GTK_WIDGET(self));
+        }
+    }
+}
+
 static void
 on_edit(GtkWidget *widget, EomDetailWindow *self)
 {

src/eom-main-window.c

@@ -6,8 +6,8 @@
 #include <hildon/hildon.h>
 #include <gtk/gtk.h>
 
-#include "eom-new-item-dialog.h"
 #include "data.h"
+#include "eom-new-item-dialog.h"
 #include "interface.h"
 
 G_DEFINE_TYPE(EomMainWindow, eom_main_window,
@@ -35,7 +35,7 @@ struct filter_args {
 static void add_menu(EomMainWindow*);
 static void eom_main_window_class_init(EomMainWindowClass*);
 static void eom_main_window_init(EomMainWindow*);
-static gboolean on_edit_closed(GtkWidget*, GdkEvent*, gpointer);
+static void on_detail_hidden(GtkWidget*, gpointer);
 static void on_filter(GtkWidget*, struct filter_args*);
 static void on_new(GtkWidget*, GtkWindow*);
 static void on_row_activated(GtkWidget*, GtkTreePath*, GtkTreeViewColumn*, gpointer);
@@ -236,14 +236,11 @@ eom_main_window_init(EomMainWindow *window)
     g_object_unref(window->store);
 }
 
-static gboolean
+static void
-on_edit_closed(GtkWidget *widget, GdkEvent *event, gpointer user_data)
+on_detail_hidden(GtkWidget *widget, gpointer user_data)
 {
-    EomMainWindow *self = user_data;
+    EomMainWindow *self = EOM_MAIN_WINDOW(user_data);
-
     eom_main_window_load(self);
-
-    return FALSE;
 }
 
 static void
@@ -294,6 +291,5 @@ on_row_activated(GtkWidget *treeview, GtkTreePath *path,
 
     gtk_tree_model_get(model, &iter, COL_ID, &id, -1);
     window = interface_show_detail_window(id);
-    g_signal_connect(window, "delete-event", G_CALLBACK(on_edit_closed),
+    g_signal_connect(window, "hide", G_CALLBACK(on_detail_hidden), self);
-                     self);
 }