Add support for file filter in file selection dialog through the new

2008-04-21  Lucas Rocha  <lucasr@gnome.org>

	Add support for file filter in file selection dialog through the new
	--file-filter command line option (Fixes bug #409843).

	* src/option.c, src/zenity.h: added supporting variable and new 
	GOptionEntry entry for the new command line option.
	* src/fileselection.c (zenity_fileselection): add file filters based
	on command line input.


svn path=/trunk/; revision=1362

3 files changed, 67 insertions, 4 deletions

diff --git a/src/fileselection.c b/src/fileselection.c
index c91c816a..46d1941d 100644
--- a/src/fileselection.c
+++ b/src/fileselection.c
@@ -85,6 +85,52 @@ void zenity_fileselection (ZenityData *data, ZenityFileData *file_data)
   if (file_data->multi)
     gtk_file_chooser_set_select_multiple (GTK_FILE_CHOOSER (dialog), TRUE);
 
+  if (file_data->filter) {
+    /* Filter format: Executables | *.exe *.bat *.com */
+    gint filter_i;
+
+    for (filter_i = 0; file_data->filter [filter_i]; filter_i++) {
+      GtkFileFilter *filter = gtk_file_filter_new();
+      gchar *filter_str = file_data->filter [filter_i];
+      gchar **pattern, **patterns;
+      gchar *name = NULL;
+      gint i;
+
+      /* Set name */
+      for (i = 0; filter_str[i] != '\0'; i++)
+        if (filter_str[i] == '|')
+          break;
+
+      if (filter_str[i] == '|') {
+        name = g_strndup (filter_str, i);
+        g_strstrip (name);
+      }
+
+      if (name) {
+        gtk_file_filter_set_name (filter, name);
+
+        /* Point i to the right position for split */
+        for (++i; filter_str[i] == ' '; i++);
+      } else {
+        gtk_file_filter_set_name (filter, filter_str);
+        i = 0;
+      }
+
+      /* Get patterns */
+      patterns = g_strsplit_set (filter_str + i, " ", -1);
+
+      for (pattern = patterns; *pattern; pattern++)
+        gtk_file_filter_add_pattern (filter, *pattern);
+
+      if (name)
+        g_free (name);
+
+      g_strfreev (patterns);
+
+      gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
+    }
+  }
+
   zenity_util_show_dialog (dialog);
 
   if(data->timeout_delay > 0) {
diff --git a/src/option.c b/src/option.c
index b56d5f09..9cbf490c 100644
--- a/src/option.c
+++ b/src/option.c
@@ -61,10 +61,11 @@ static gboolean zenity_error_active;
 static gboolean zenity_info_active;
 
 /* File Selection Dialog Options */
-static gboolean zenity_file_active;
-static gboolean zenity_file_directory;
-static gboolean zenity_file_save;
-static gboolean zenity_file_confirm_overwrite;
+static gboolean       zenity_file_active;
+static gboolean       zenity_file_directory;
+static gboolean       zenity_file_save;
+static gboolean       zenity_file_confirm_overwrite;
+static GtkFileFilter *zenity_file_filter;
 
 /* List Dialog Options */
 static gboolean zenity_list_active;
@@ -394,6 +395,15 @@ static GOptionEntry file_selection_options[] = {
     N_("Confirm file selection if filename already exists"),
     NULL
   },
+  {
+    "file-filter",
+    '\0',
+    0,
+    G_OPTION_ARG_STRING_ARRAY,
+    &zenity_file_filter,
+    N_("Sets a filename filter"),
+    N_("NAME | PATTERN1 PATTERN2 ..."),
+  },
   { 
     NULL 
   } 
@@ -981,6 +991,7 @@ zenity_file_pre_callback (GOptionContext *context,
   zenity_file_directory = FALSE;
   zenity_file_save = FALSE;
   zenity_file_confirm_overwrite = FALSE;
+  zenity_file_filter = NULL;
 
   return TRUE;
 }
@@ -1233,6 +1244,7 @@ zenity_file_post_callback (GOptionContext *context,
     results->file_data->save = zenity_file_save;
     results->file_data->confirm_overwrite = zenity_file_confirm_overwrite;
     results->file_data->separator = zenity_general_separator;
+    results->file_data->filter = zenity_file_filter;
   } else {
     if (zenity_file_directory)
       zenity_option_error (zenity_option_get_name (file_selection_options, &zenity_file_directory),
@@ -1241,6 +1253,10 @@ zenity_file_post_callback (GOptionContext *context,
     if (zenity_file_save)
       zenity_option_error (zenity_option_get_name (file_selection_options, &zenity_file_save),
                            ERROR_SUPPORT);
+
+    if (zenity_file_filter)
+      zenity_option_error (zenity_option_get_name (file_selection_options, &zenity_file_filter),
+                           ERROR_SUPPORT);
   }
     
   return TRUE;
diff --git a/src/zenity.h b/src/zenity.h
index 8865cd9b..511ee84d 100644
--- a/src/zenity.h
+++ b/src/zenity.h
@@ -81,6 +81,7 @@ typedef struct {
   gboolean save;
   gboolean confirm_overwrite;
   gchar   *separator;
+  gchar  **filter;
 } ZenityFileData;
 
 typedef struct {