[gtk+] printing: Enable search through locations in printers list

[Marek Kašík <mkasik src gnome org>]

commit 8418e6422f0ec67c51d472321f4704a3a16e0368
Author: Marek Kasik <mkasik redhat com>
Date:   Thu Dec 19 14:52:16 2013 +0100

    printing: Enable search through locations in printers list
    
    Add printer_compare() function for comparing printers according
    to their names and locations. It is possible to search by multiple
    keys separated by space or tabulator using logical conjunction.
    
    Based on patch by William Hua.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692931

 gtk/gtkprintunixdialog.c               |   87 ++++++++++++++++++++++++++++++++
 gtk/resources/ui/gtkprintunixdialog.ui |    1 -
 2 files changed, 87 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkprintunixdialog.c b/gtk/gtkprintunixdialog.c
index b83b100..0d2569b 100644
--- a/gtk/gtkprintunixdialog.c
+++ b/gtk/gtkprintunixdialog.c
@@ -212,6 +212,11 @@ static gboolean set_active_printer                 (GtkPrintUnixDialog *dialog,
                                                     const gchar        *printer_name);
 static void redraw_page_layout_preview             (GtkPrintUnixDialog *dialog);
 static void load_print_backends                    (GtkPrintUnixDialog *dialog);
+static gboolean printer_compare                    (GtkTreeModel       *model,
+                                                    gint                column,
+                                                    const gchar        *key,
+                                                    GtkTreeIter        *iter,
+                                                    gpointer            search_data);
 
 /* GtkBuildable */
 static void gtk_print_unix_dialog_buildable_init                    (GtkBuildableIface *iface);
@@ -758,6 +763,9 @@ gtk_print_unix_dialog_init (GtkPrintUnixDialog *dialog)
                                         GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
                                         GTK_SORT_ASCENDING);
 
+  gtk_tree_view_set_search_equal_func (GTK_TREE_VIEW (priv->printer_treeview),
+                                       printer_compare, NULL, NULL);
+
   gtk_tree_view_column_set_cell_data_func (priv->printer_icon_column,
                                           priv->printer_icon_renderer,
                                           set_cell_sensitivity_func, NULL, NULL);
@@ -2106,6 +2114,85 @@ selected_printer_changed (GtkTreeSelection   *selection,
   g_object_notify ( G_OBJECT(dialog), "selected-printer");
 }
 
+static gboolean
+printer_compare (GtkTreeModel *model,
+                 gint          column,
+                 const gchar  *key,
+                 GtkTreeIter  *iter,
+                 gpointer      search_data)
+{
+  gboolean matches = FALSE;
+
+  if (key != NULL)
+    {
+      gchar  *name = NULL;
+      gchar  *location = NULL;
+      gchar  *casefold_key = NULL;
+      gchar  *casefold_name = NULL;
+      gchar  *casefold_location = NULL;
+      gchar **keys;
+      gchar  *tmp1, *tmp2;
+      gint    i;
+
+      gtk_tree_model_get (model, iter,
+                          PRINTER_LIST_COL_NAME, &name,
+                          PRINTER_LIST_COL_LOCATION, &location,
+                          -1);
+
+      casefold_key = g_utf8_casefold (key, -1);
+
+      if (name != NULL)
+        {
+          casefold_name = g_utf8_casefold (name, -1);
+          g_free (name);
+        }
+
+      if (location != NULL)
+        {
+          casefold_location = g_utf8_casefold (location, -1);
+          g_free (location);
+        }
+
+      if (casefold_name != NULL ||
+          casefold_location != NULL)
+        {
+          keys = g_strsplit_set (casefold_key, " \t", 0);
+          if (keys != NULL)
+            {
+              matches = TRUE;
+
+              for (i = 0; keys[i] != NULL; i++)
+                {
+                  if (keys[i][0] != '\0')
+                    {
+                      tmp1 = tmp2 = NULL;
+
+                      if (casefold_name != NULL)
+                        tmp1 = g_strstr_len (casefold_name, -1, keys[i]);
+
+                      if (casefold_location != NULL)
+                        tmp2 = g_strstr_len (casefold_location, -1, keys[i]);
+
+                      if (tmp1 == NULL && tmp2 == NULL)
+                        {
+                          matches = FALSE;
+                          break;
+                        }
+                    }
+                }
+
+              g_strfreev (keys);
+            }
+        }
+
+      g_free (casefold_location);
+      g_free (casefold_name);
+      g_free (casefold_key);
+    }
+
+  return !matches;
+}
+
 static void
 update_collate_icon (GtkToggleButton    *toggle_button,
                      GtkPrintUnixDialog *dialog)
diff --git a/gtk/resources/ui/gtkprintunixdialog.ui b/gtk/resources/ui/gtkprintunixdialog.ui
index 3d2aec7..cf8cbf7 100644
--- a/gtk/resources/ui/gtkprintunixdialog.ui
+++ b/gtk/resources/ui/gtkprintunixdialog.ui
@@ -93,7 +93,6 @@
                                 <property name="visible">True</property>
                                 <property name="can_focus">True</property>
                                 <property name="model">printer_list_filter</property>
-                                <property name="search_column">1</property>
                                 <signal name="row-activated" handler="emit_ok_response" swapped="no"/>
                                 <child internal-child="selection">
                                   <object class="GtkTreeSelection" id="treeview-selection1">