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Added <mime-types> and <patterns> parsing support to GtkFileFilter.

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This commit is contained in:
Tristan Van Berkom 2011-01-27 16:30:15 +09:00
parent 9bd53091c0
commit 031a092254
2 changed files with 194 additions and 1 deletions
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1
gtk/gtkbuilder.c
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@ -236,6 +236,7 @@
* <link linkend="GtkScale-BUILDER-UI">GtkScale</link>,
* <link linkend="GtkComboBoxText-BUILDER-UI">GtkComboBoxText</link>,
* <link linkend="GtkRecentFilter-BUILDER-UI">GtkRecentFilter</link>,
* <link linkend="GtkFileFilter-BUILDER-UI">GtkFileFilter</link>,
* <link linkend="GtkTextTagTable-BUILDER-UI">GtkTextTagTable</link>.
* </para>
* </refsect2>

194
gtk/gtkfilefilter.c
View File

@ -39,6 +39,33 @@
* see gtk_file_chooser_add_filter(), but it is also possible
* to manually use a filter on a file with gtk_file_filter_filter().
*
* <refsect2 id="GtkFileFilter-BUILDER-UI">
* <title>GtkFileFilter as GtkBuildable</title>
* <para>
* The GtkFileFilter implementation of the GtkBuildable interface
* supports adding rules using the &lt;mime-types&gt, &lt;patterns&gt and
* &lt;applications&gt elements and listing the rules within. Specifying
* a &lt;mime-type&gt or &lt;pattern&gt is the same
* as calling gtk_recent_filter_add_mime_type() or gtk_recent_filter_add_pattern()
*
* <example>
* <title>A UI definition fragment specifying GtkFileFilter rules</title>
* <programlisting><![CDATA[
* <object class="GtkFileFilter">
* <mime-types>
* <mime-type>text/plain</mime-type>
* <mime-type>image/*</mime-type>
* </mime-types>
* <patterns>
* <pattern>*.txt</pattern>
* <pattern>*.png</pattern>
* </patterns>
* </object>
* ]]></programlisting>
* </example>
* </para>
* </refsect2>
*
* @see_also: #GtkFileChooser
*/
@ -48,6 +75,7 @@
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "gtkfilefilter.h"
#include "gtkbuildable.h"
#include "gtkintl.h"
#include "gtkprivate.h"
@ -100,7 +128,22 @@ struct _FilterRule
static void gtk_file_filter_finalize (GObject *object);
G_DEFINE_TYPE (GtkFileFilter, gtk_file_filter, G_TYPE_INITIALLY_UNOWNED)
static void gtk_file_filter_buildable_init (GtkBuildableIface *iface);
static gboolean gtk_file_filter_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_file_filter_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data);
G_DEFINE_TYPE_WITH_CODE (GtkFileFilter, gtk_file_filter, G_TYPE_INITIALLY_UNOWNED,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_file_filter_buildable_init))
static void
gtk_file_filter_init (GtkFileFilter *object)
@ -153,6 +196,155 @@ gtk_file_filter_finalize (GObject *object)
G_OBJECT_CLASS (gtk_file_filter_parent_class)->finalize (object);
}
/*
* GtkBuildable implementation
*/
static void
gtk_file_filter_buildable_init (GtkBuildableIface *iface)
{
iface->custom_tag_start = gtk_file_filter_buildable_custom_tag_start;
iface->custom_tag_end = gtk_file_filter_buildable_custom_tag_end;
}
typedef enum {
PARSE_MIME_TYPES,
PARSE_PATTERNS
} ParserType;
typedef struct {
GtkFileFilter *filter;
ParserType type;
GString *string;
gboolean parsing;
} SubParserData;
static void
parser_start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **names,
const gchar **values,
gpointer user_data,
GError **error)
{
SubParserData *parser_data = (SubParserData*)user_data;
if (strcmp (element_name, "mime-types") == 0)
return;
else if (strcmp (element_name, "mime-type") == 0)
{
parser_data->parsing = TRUE;
return;
}
else if (strcmp (element_name, "patterns") == 0)
return;
else if (strcmp (element_name, "pattern") == 0)
{
parser_data->parsing = TRUE;
return;
}
else
g_warning ("Unsupported tag for GtkFileFilter: %s\n", element_name);
}
static void
parser_text_element (GMarkupParseContext *context,
const gchar *text,
gsize text_len,
gpointer user_data,
GError **error)
{
SubParserData *parser_data = (SubParserData*)user_data;
if (parser_data->parsing)
g_string_append_len (parser_data->string, text, text_len);
}
static void
parser_end_element (GMarkupParseContext *context,
const gchar *element_name,
gpointer user_data,
GError **error)
{
SubParserData *parser_data = (SubParserData*)user_data;
if (parser_data->string)
{
switch (parser_data->type)
{
case PARSE_MIME_TYPES:
gtk_file_filter_add_mime_type (parser_data->filter, parser_data->string->str);
break;
case PARSE_PATTERNS:
gtk_file_filter_add_pattern (parser_data->filter, parser_data->string->str);
break;
default:
break;
}
}
g_string_set_size (parser_data->string, 0);
parser_data->parsing = FALSE;
}
static const GMarkupParser sub_parser =
{
parser_start_element,
parser_end_element,
parser_text_element,
};
static gboolean
gtk_file_filter_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
SubParserData *parser_data = NULL;
if (strcmp (tagname, "mime-types") == 0)
{
parser_data = g_slice_new0 (SubParserData);
parser_data->string = g_string_new ("");
parser_data->type = PARSE_MIME_TYPES;
parser_data->filter = GTK_FILE_FILTER (buildable);
*parser = sub_parser;
*data = parser_data;
}
else if (strcmp (tagname, "patterns") == 0)
{
parser_data = g_slice_new0 (SubParserData);
parser_data->string = g_string_new ("");
parser_data->type = PARSE_PATTERNS;
parser_data->filter = GTK_FILE_FILTER (buildable);
*parser = sub_parser;
*data = parser_data;
}
return parser_data != NULL;
}
static void
gtk_file_filter_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data)
{
if (strcmp (tagname, "mime-types") == 0 ||
strcmp (tagname, "patterns") == 0)
{
SubParserData *parser_data = (SubParserData*)data;
g_string_free (parser_data->string, TRUE);
g_slice_free (SubParserData, parser_data);
}
}
/**
* gtk_file_filter_new:
*