forked from AuroraMiddleware/gtk
ff46ea64c4
While gtk-doc doesn't care, this isn't really valid Markdown as the GtkBuilder custom XML tags will be considered valid markup and embedded as they are, breaking the HTML output.
913 lines
24 KiB
C
913 lines
24 KiB
C
/* GTK - The GIMP Toolkit
|
||
* gtkfilefilter.c: Filters for selecting a file subset
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* Copyright (C) 2003, Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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||
* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* SECTION:gtkfilefilter
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* @Short_description: A filter for selecting a file subset
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* @Title: GtkFileFilter
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* @see_also: #GtkFileChooser
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*
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* A GtkFileFilter can be used to restrict the files being shown in a
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* #GtkFileChooser. Files can be filtered based on their name (with
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* gtk_file_filter_add_pattern()), on their mime type (with
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* gtk_file_filter_add_mime_type()), or by a custom filter function
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* (with gtk_file_filter_add_custom()).
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*
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* Filtering by mime types handles aliasing and subclassing of mime
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* types; e.g. a filter for text/plain also matches a file with mime
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* type application/rtf, since application/rtf is a subclass of
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* text/plain. Note that #GtkFileFilter allows wildcards for the
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* subtype of a mime type, so you can e.g. filter for image/\*.
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*
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* Normally, filters are used by adding them to a #GtkFileChooser,
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* see gtk_file_chooser_add_filter(), but it is also possible
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* to manually use a filter on a file with gtk_file_filter_filter().
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*
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* # GtkFileFilter as GtkBuildable
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*
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* The GtkFileFilter implementation of the GtkBuildable interface
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* supports adding rules using the `<mime-types>`, `<patterns>` and
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* `<applications>` elements and listing the rules within. Specifying
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* a `<mime-type>` or `<pattern>` has the same effect as as calling
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* gtk_file_filter_add_mime_type() or gtk_file_filter_add_pattern().
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*
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* An example of a UI definition fragment specifying GtkFileFilter
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* rules:
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*
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* |[<!-- language="xml" -->
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* <object class="GtkFileFilter">
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* <mime-types>
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* <mime-type>text/plain</mime-type>
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* <mime-type>image/ *</mime-type>
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* </mime-types>
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* <patterns>
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* <pattern>*.txt</pattern>
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* <pattern>*.png</pattern>
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* </patterns>
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* </object>
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* ]|
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*/
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#include "config.h"
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#include <string.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "gtkfilefilterprivate.h"
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#include "gtkbuildable.h"
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#include "gtkbuilderprivate.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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typedef struct _GtkFileFilterClass GtkFileFilterClass;
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typedef struct _FilterRule FilterRule;
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#define GTK_FILE_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_FILTER, GtkFileFilterClass))
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#define GTK_IS_FILE_FILTER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_FILTER))
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#define GTK_FILE_FILTER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_FILTER, GtkFileFilterClass))
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typedef enum {
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FILTER_RULE_PATTERN,
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FILTER_RULE_MIME_TYPE,
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FILTER_RULE_PIXBUF_FORMATS,
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FILTER_RULE_CUSTOM
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} FilterRuleType;
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struct _GtkFileFilterClass
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{
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GInitiallyUnownedClass parent_class;
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};
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struct _GtkFileFilter
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{
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GInitiallyUnowned parent_instance;
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gchar *name;
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GSList *rules;
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GtkFileFilterFlags needed;
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};
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struct _FilterRule
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{
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FilterRuleType type;
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GtkFileFilterFlags needed;
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union {
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gchar *pattern;
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gchar *mime_type;
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GSList *pixbuf_formats;
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struct {
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GtkFileFilterFunc func;
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gpointer data;
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GDestroyNotify notify;
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} custom;
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} u;
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};
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static void gtk_file_filter_finalize (GObject *object);
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static void gtk_file_filter_buildable_init (GtkBuildableIface *iface);
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static void gtk_file_filter_buildable_set_name (GtkBuildable *buildable,
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const gchar *name);
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static const gchar* gtk_file_filter_buildable_get_name (GtkBuildable *buildable);
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static gboolean gtk_file_filter_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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GMarkupParser *parser,
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gpointer *data);
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static void gtk_file_filter_buildable_custom_tag_end (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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gpointer *data);
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G_DEFINE_TYPE_WITH_CODE (GtkFileFilter, gtk_file_filter, G_TYPE_INITIALLY_UNOWNED,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_file_filter_buildable_init))
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static void
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gtk_file_filter_init (GtkFileFilter *object)
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{
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}
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static void
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gtk_file_filter_class_init (GtkFileFilterClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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gobject_class->finalize = gtk_file_filter_finalize;
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}
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static void
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filter_rule_free (FilterRule *rule)
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{
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switch (rule->type)
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{
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case FILTER_RULE_MIME_TYPE:
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g_free (rule->u.mime_type);
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break;
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case FILTER_RULE_PATTERN:
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g_free (rule->u.pattern);
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break;
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case FILTER_RULE_CUSTOM:
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if (rule->u.custom.notify)
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rule->u.custom.notify (rule->u.custom.data);
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break;
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case FILTER_RULE_PIXBUF_FORMATS:
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g_slist_free (rule->u.pixbuf_formats);
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break;
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default:
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g_assert_not_reached ();
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}
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g_slice_free (FilterRule, rule);
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}
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static void
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gtk_file_filter_finalize (GObject *object)
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{
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GtkFileFilter *filter = GTK_FILE_FILTER (object);
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g_slist_free_full (filter->rules, (GDestroyNotify)filter_rule_free);
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g_free (filter->name);
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G_OBJECT_CLASS (gtk_file_filter_parent_class)->finalize (object);
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}
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/*
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* GtkBuildable implementation
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*/
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static void
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gtk_file_filter_buildable_init (GtkBuildableIface *iface)
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{
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iface->custom_tag_start = gtk_file_filter_buildable_custom_tag_start;
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iface->custom_tag_end = gtk_file_filter_buildable_custom_tag_end;
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iface->set_name = gtk_file_filter_buildable_set_name;
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iface->get_name = gtk_file_filter_buildable_get_name;
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}
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static void
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gtk_file_filter_buildable_set_name (GtkBuildable *buildable,
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const gchar *name)
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{
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gtk_file_filter_set_name (GTK_FILE_FILTER (buildable), name);
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}
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static const gchar *
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gtk_file_filter_buildable_get_name (GtkBuildable *buildable)
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{
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return gtk_file_filter_get_name (GTK_FILE_FILTER (buildable));
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}
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typedef enum {
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PARSE_MIME_TYPES,
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PARSE_PATTERNS
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} ParserType;
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typedef struct {
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GtkFileFilter *filter;
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GtkBuilder *builder;
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ParserType type;
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GString *string;
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gboolean parsing;
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} SubParserData;
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static void
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parser_start_element (GMarkupParseContext *context,
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const gchar *element_name,
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const gchar **names,
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const gchar **values,
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gpointer user_data,
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GError **error)
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{
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SubParserData *data = (SubParserData*)user_data;
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if (!g_markup_collect_attributes (element_name, names, values, error,
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G_MARKUP_COLLECT_INVALID, NULL, NULL,
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G_MARKUP_COLLECT_INVALID))
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{
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_gtk_builder_prefix_error (data->builder, context, error);
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return;
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}
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if (strcmp (element_name, "mime-types") == 0 ||
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strcmp (element_name, "patterns") == 0)
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{
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if (!_gtk_builder_check_parent (data->builder, context, "object", error))
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return;
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}
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else if (strcmp (element_name, "mime-type") == 0)
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{
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if (!_gtk_builder_check_parent (data->builder, context, "mime-types", error))
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return;
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data->parsing = TRUE;
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}
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else if (strcmp (element_name, "pattern") == 0)
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{
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if (!_gtk_builder_check_parent (data->builder, context, "patterns", error))
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return;
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data->parsing = TRUE;
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}
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else
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{
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_gtk_builder_error_unhandled_tag (data->builder, context,
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"GtkFileFilter", element_name,
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error);
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}
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}
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static void
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parser_text_element (GMarkupParseContext *context,
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const gchar *text,
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gsize text_len,
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gpointer user_data,
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GError **error)
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{
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SubParserData *data = (SubParserData*)user_data;
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if (data->parsing)
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g_string_append_len (data->string, text, text_len);
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}
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static void
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parser_end_element (GMarkupParseContext *context,
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const gchar *element_name,
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gpointer user_data,
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GError **error)
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{
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SubParserData *data = (SubParserData*)user_data;
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if (data->string != NULL && data->string->len != 0)
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{
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switch (data->type)
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{
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case PARSE_MIME_TYPES:
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gtk_file_filter_add_mime_type (data->filter, data->string->str);
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break;
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case PARSE_PATTERNS:
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gtk_file_filter_add_pattern (data->filter, data->string->str);
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break;
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default:
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break;
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}
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}
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g_string_set_size (data->string, 0);
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data->parsing = FALSE;
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}
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static const GMarkupParser sub_parser =
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{
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parser_start_element,
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parser_end_element,
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parser_text_element,
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};
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static gboolean
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gtk_file_filter_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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GMarkupParser *parser,
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gpointer *parser_data)
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{
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SubParserData *data = NULL;
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if (strcmp (tagname, "mime-types") == 0)
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{
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data = g_slice_new0 (SubParserData);
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data->string = g_string_new ("");
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data->type = PARSE_MIME_TYPES;
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data->filter = GTK_FILE_FILTER (buildable);
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data->builder = builder;
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*parser = sub_parser;
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*parser_data = data;
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}
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else if (strcmp (tagname, "patterns") == 0)
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{
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data = g_slice_new0 (SubParserData);
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data->string = g_string_new ("");
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data->type = PARSE_PATTERNS;
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data->filter = GTK_FILE_FILTER (buildable);
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data->builder = builder;
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*parser = sub_parser;
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*parser_data = data;
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}
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return data != NULL;
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}
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static void
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gtk_file_filter_buildable_custom_tag_end (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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gpointer *user_data)
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{
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if (strcmp (tagname, "mime-types") == 0 ||
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strcmp (tagname, "patterns") == 0)
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{
|
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SubParserData *data = (SubParserData*)user_data;
|
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g_string_free (data->string, TRUE);
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g_slice_free (SubParserData, data);
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}
|
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}
|
||
|
||
|
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/**
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* gtk_file_filter_new:
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*
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* Creates a new #GtkFileFilter with no rules added to it.
|
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* Such a filter doesn’t accept any files, so is not
|
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* particularly useful until you add rules with
|
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* gtk_file_filter_add_mime_type(), gtk_file_filter_add_pattern(),
|
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* or gtk_file_filter_add_custom(). To create a filter
|
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* that accepts any file, use:
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* |[<!-- language="C" -->
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* GtkFileFilter *filter = gtk_file_filter_new ();
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* gtk_file_filter_add_pattern (filter, "*");
|
||
* ]|
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*
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* Returns: a new #GtkFileFilter
|
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*
|
||
* Since: 2.4
|
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**/
|
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GtkFileFilter *
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gtk_file_filter_new (void)
|
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{
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return g_object_new (GTK_TYPE_FILE_FILTER, NULL);
|
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}
|
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|
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/**
|
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* gtk_file_filter_set_name:
|
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* @filter: a #GtkFileFilter
|
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* @name: (allow-none): the human-readable-name for the filter, or %NULL
|
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* to remove any existing name.
|
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*
|
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* Sets the human-readable name of the filter; this is the string
|
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* that will be displayed in the file selector user interface if
|
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* there is a selectable list of filters.
|
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*
|
||
* Since: 2.4
|
||
**/
|
||
void
|
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gtk_file_filter_set_name (GtkFileFilter *filter,
|
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const gchar *name)
|
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{
|
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g_return_if_fail (GTK_IS_FILE_FILTER (filter));
|
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|
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g_free (filter->name);
|
||
|
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filter->name = g_strdup (name);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_get_name:
|
||
* @filter: a #GtkFileFilter
|
||
*
|
||
* Gets the human-readable name for the filter. See gtk_file_filter_set_name().
|
||
*
|
||
* Returns: (nullable): The human-readable name of the filter,
|
||
* or %NULL. This value is owned by GTK+ and must not
|
||
* be modified or freed.
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
const gchar *
|
||
gtk_file_filter_get_name (GtkFileFilter *filter)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_FILE_FILTER (filter), NULL);
|
||
|
||
return filter->name;
|
||
}
|
||
|
||
static void
|
||
file_filter_add_rule (GtkFileFilter *filter,
|
||
FilterRule *rule)
|
||
{
|
||
filter->needed |= rule->needed;
|
||
filter->rules = g_slist_append (filter->rules, rule);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_add_mime_type:
|
||
* @filter: A #GtkFileFilter
|
||
* @mime_type: name of a MIME type
|
||
*
|
||
* Adds a rule allowing a given mime type to @filter.
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
void
|
||
gtk_file_filter_add_mime_type (GtkFileFilter *filter,
|
||
const gchar *mime_type)
|
||
{
|
||
FilterRule *rule;
|
||
|
||
g_return_if_fail (GTK_IS_FILE_FILTER (filter));
|
||
g_return_if_fail (mime_type != NULL);
|
||
|
||
rule = g_slice_new (FilterRule);
|
||
rule->type = FILTER_RULE_MIME_TYPE;
|
||
rule->needed = GTK_FILE_FILTER_MIME_TYPE;
|
||
rule->u.mime_type = g_strdup (mime_type);
|
||
|
||
file_filter_add_rule (filter, rule);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_add_pattern:
|
||
* @filter: a #GtkFileFilter
|
||
* @pattern: a shell style glob
|
||
*
|
||
* Adds a rule allowing a shell style glob to a filter.
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
void
|
||
gtk_file_filter_add_pattern (GtkFileFilter *filter,
|
||
const gchar *pattern)
|
||
{
|
||
FilterRule *rule;
|
||
|
||
g_return_if_fail (GTK_IS_FILE_FILTER (filter));
|
||
g_return_if_fail (pattern != NULL);
|
||
|
||
rule = g_slice_new (FilterRule);
|
||
rule->type = FILTER_RULE_PATTERN;
|
||
rule->needed = GTK_FILE_FILTER_DISPLAY_NAME;
|
||
rule->u.pattern = g_strdup (pattern);
|
||
|
||
file_filter_add_rule (filter, rule);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_add_pixbuf_formats:
|
||
* @filter: a #GtkFileFilter
|
||
*
|
||
* Adds a rule allowing image files in the formats supported
|
||
* by GdkPixbuf.
|
||
*
|
||
* Since: 2.6
|
||
**/
|
||
void
|
||
gtk_file_filter_add_pixbuf_formats (GtkFileFilter *filter)
|
||
{
|
||
FilterRule *rule;
|
||
|
||
g_return_if_fail (GTK_IS_FILE_FILTER (filter));
|
||
|
||
rule = g_slice_new (FilterRule);
|
||
rule->type = FILTER_RULE_PIXBUF_FORMATS;
|
||
rule->needed = GTK_FILE_FILTER_MIME_TYPE;
|
||
rule->u.pixbuf_formats = gdk_pixbuf_get_formats ();
|
||
file_filter_add_rule (filter, rule);
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_file_filter_add_custom:
|
||
* @filter: a #GtkFileFilter
|
||
* @needed: bitfield of flags indicating the information that the custom
|
||
* filter function needs.
|
||
* @func: callback function; if the function returns %TRUE, then
|
||
* the file will be displayed.
|
||
* @data: data to pass to @func
|
||
* @notify: function to call to free @data when it is no longer needed.
|
||
*
|
||
* Adds rule to a filter that allows files based on a custom callback
|
||
* function. The bitfield @needed which is passed in provides information
|
||
* about what sorts of information that the filter function needs;
|
||
* this allows GTK+ to avoid retrieving expensive information when
|
||
* it isn’t needed by the filter.
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
void
|
||
gtk_file_filter_add_custom (GtkFileFilter *filter,
|
||
GtkFileFilterFlags needed,
|
||
GtkFileFilterFunc func,
|
||
gpointer data,
|
||
GDestroyNotify notify)
|
||
{
|
||
FilterRule *rule;
|
||
|
||
g_return_if_fail (GTK_IS_FILE_FILTER (filter));
|
||
g_return_if_fail (func != NULL);
|
||
|
||
rule = g_slice_new (FilterRule);
|
||
rule->type = FILTER_RULE_CUSTOM;
|
||
rule->needed = needed;
|
||
rule->u.custom.func = func;
|
||
rule->u.custom.data = data;
|
||
rule->u.custom.notify = notify;
|
||
|
||
file_filter_add_rule (filter, rule);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_get_needed:
|
||
* @filter: a #GtkFileFilter
|
||
*
|
||
* Gets the fields that need to be filled in for the #GtkFileFilterInfo
|
||
* passed to gtk_file_filter_filter()
|
||
*
|
||
* This function will not typically be used by applications; it
|
||
* is intended principally for use in the implementation of
|
||
* #GtkFileChooser.
|
||
*
|
||
* Returns: bitfield of flags indicating needed fields when
|
||
* calling gtk_file_filter_filter()
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
GtkFileFilterFlags
|
||
gtk_file_filter_get_needed (GtkFileFilter *filter)
|
||
{
|
||
return filter->needed;
|
||
}
|
||
|
||
#ifdef GDK_WINDOWING_QUARTZ
|
||
|
||
#import <Foundation/Foundation.h>
|
||
|
||
NSArray * _gtk_file_filter_get_as_pattern_nsstrings (GtkFileFilter *filter)
|
||
{
|
||
NSMutableArray *array = [[NSMutableArray alloc] init];
|
||
GSList *tmp_list;
|
||
|
||
for (tmp_list = filter->rules; tmp_list; tmp_list = tmp_list->next)
|
||
{
|
||
FilterRule *rule = tmp_list->data;
|
||
|
||
switch (rule->type)
|
||
{
|
||
case FILTER_RULE_CUSTOM:
|
||
[array release];
|
||
return NULL;
|
||
break;
|
||
case FILTER_RULE_MIME_TYPE:
|
||
{
|
||
// convert mime-types to UTI
|
||
NSString *mime_type_nsstring = [NSString stringWithUTF8String: rule->u.mime_type];
|
||
NSString *uti_nsstring = (NSString *) UTTypeCreatePreferredIdentifierForTag (kUTTagClassMIMEType, (CFStringRef) mime_type_nsstring, NULL);
|
||
if (uti_nsstring == NULL)
|
||
{
|
||
[array release];
|
||
return NULL;
|
||
}
|
||
[array addObject:uti_nsstring];
|
||
}
|
||
break;
|
||
case FILTER_RULE_PATTERN:
|
||
{
|
||
// patterns will need to be stripped of their leading *.
|
||
GString *pattern = g_string_new (rule->u.pattern);
|
||
if (strncmp (pattern->str, "*.", 2) == 0)
|
||
{
|
||
pattern = g_string_erase (pattern, 0, 2);
|
||
}
|
||
else if (strncmp (pattern->str, "*", 1) == 0)
|
||
{
|
||
pattern = g_string_erase (pattern, 0, 1);
|
||
}
|
||
gchar *pattern_c = g_string_free (pattern, FALSE);
|
||
NSString *pattern_nsstring = [NSString stringWithUTF8String:pattern_c];
|
||
g_free (pattern_c);
|
||
[pattern_nsstring retain];
|
||
[array addObject:pattern_nsstring];
|
||
}
|
||
break;
|
||
case FILTER_RULE_PIXBUF_FORMATS:
|
||
{
|
||
GSList *list;
|
||
|
||
for (list = rule->u.pixbuf_formats; list; list = list->next)
|
||
{
|
||
int i;
|
||
gchar **extensions;
|
||
|
||
extensions = gdk_pixbuf_format_get_extensions (list->data);
|
||
|
||
for (i = 0; extensions[i] != NULL; i++)
|
||
{
|
||
NSString *extension = [NSString stringWithUTF8String: extensions[i]];
|
||
[extension retain];
|
||
[array addObject:extension];
|
||
}
|
||
g_strfreev (extensions);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return array;
|
||
}
|
||
#endif
|
||
|
||
char **
|
||
_gtk_file_filter_get_as_patterns (GtkFileFilter *filter)
|
||
{
|
||
GPtrArray *array;
|
||
GSList *tmp_list;
|
||
|
||
array = g_ptr_array_new_with_free_func (g_free);
|
||
|
||
for (tmp_list = filter->rules; tmp_list; tmp_list = tmp_list->next)
|
||
{
|
||
FilterRule *rule = tmp_list->data;
|
||
|
||
switch (rule->type)
|
||
{
|
||
case FILTER_RULE_CUSTOM:
|
||
case FILTER_RULE_MIME_TYPE:
|
||
g_ptr_array_free (array, TRUE);
|
||
return NULL;
|
||
break;
|
||
case FILTER_RULE_PATTERN:
|
||
g_ptr_array_add (array, g_strdup (rule->u.pattern));
|
||
break;
|
||
case FILTER_RULE_PIXBUF_FORMATS:
|
||
{
|
||
GSList *list;
|
||
|
||
for (list = rule->u.pixbuf_formats; list; list = list->next)
|
||
{
|
||
int i;
|
||
gchar **extensions;
|
||
|
||
extensions = gdk_pixbuf_format_get_extensions (list->data);
|
||
|
||
for (i = 0; extensions[i] != NULL; i++)
|
||
g_ptr_array_add (array, g_strdup_printf ("*.%s", extensions[i]));
|
||
|
||
g_strfreev (extensions);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
g_ptr_array_add (array, NULL); /* Null terminate */
|
||
return (char **)g_ptr_array_free (array, FALSE);
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_filter:
|
||
* @filter: a #GtkFileFilter
|
||
* @filter_info: a #GtkFileFilterInfo containing information
|
||
* about a file.
|
||
*
|
||
* Tests whether a file should be displayed according to @filter.
|
||
* The #GtkFileFilterInfo @filter_info should include
|
||
* the fields returned from gtk_file_filter_get_needed().
|
||
*
|
||
* This function will not typically be used by applications; it
|
||
* is intended principally for use in the implementation of
|
||
* #GtkFileChooser.
|
||
*
|
||
* Returns: %TRUE if the file should be displayed
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
gboolean
|
||
gtk_file_filter_filter (GtkFileFilter *filter,
|
||
const GtkFileFilterInfo *filter_info)
|
||
{
|
||
GSList *tmp_list;
|
||
|
||
for (tmp_list = filter->rules; tmp_list; tmp_list = tmp_list->next)
|
||
{
|
||
FilterRule *rule = tmp_list->data;
|
||
|
||
if ((filter_info->contains & rule->needed) != rule->needed)
|
||
continue;
|
||
|
||
switch (rule->type)
|
||
{
|
||
case FILTER_RULE_MIME_TYPE:
|
||
if (filter_info->mime_type != NULL)
|
||
{
|
||
gchar *filter_content_type, *rule_content_type;
|
||
gboolean match;
|
||
|
||
filter_content_type = g_content_type_from_mime_type (filter_info->mime_type);
|
||
rule_content_type = g_content_type_from_mime_type (rule->u.mime_type);
|
||
match = filter_content_type != NULL &&
|
||
rule_content_type != NULL &&
|
||
g_content_type_is_a (filter_content_type, rule_content_type);
|
||
g_free (filter_content_type);
|
||
g_free (rule_content_type);
|
||
|
||
if (match)
|
||
return TRUE;
|
||
}
|
||
break;
|
||
case FILTER_RULE_PATTERN:
|
||
if (filter_info->display_name != NULL &&
|
||
_gtk_fnmatch (rule->u.pattern, filter_info->display_name, FALSE))
|
||
return TRUE;
|
||
break;
|
||
case FILTER_RULE_PIXBUF_FORMATS:
|
||
{
|
||
GSList *list;
|
||
|
||
if (!filter_info->mime_type)
|
||
break;
|
||
|
||
for (list = rule->u.pixbuf_formats; list; list = list->next)
|
||
{
|
||
int i;
|
||
gchar **mime_types;
|
||
|
||
mime_types = gdk_pixbuf_format_get_mime_types (list->data);
|
||
|
||
for (i = 0; mime_types[i] != NULL; i++)
|
||
{
|
||
if (strcmp (mime_types[i], filter_info->mime_type) == 0)
|
||
{
|
||
g_strfreev (mime_types);
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
g_strfreev (mime_types);
|
||
}
|
||
break;
|
||
}
|
||
case FILTER_RULE_CUSTOM:
|
||
if (rule->u.custom.func (filter_info, rule->u.custom.data))
|
||
return TRUE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_to_gvariant:
|
||
* @filter: a #GtkFileFilter
|
||
*
|
||
* Serialize a file filter to an a{sv} variant.
|
||
*
|
||
* Returns: (transfer none): a new, floating, #GVariant
|
||
*
|
||
* Since: 3.22
|
||
*/
|
||
GVariant *
|
||
gtk_file_filter_to_gvariant (GtkFileFilter *filter)
|
||
{
|
||
GVariantBuilder builder;
|
||
GSList *l;
|
||
|
||
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(us)"));
|
||
for (l = filter->rules; l; l = l->next)
|
||
{
|
||
FilterRule *rule = l->data;
|
||
|
||
switch (rule->type)
|
||
{
|
||
case FILTER_RULE_PATTERN:
|
||
g_variant_builder_add (&builder, "(us)", 0, rule->u.pattern);
|
||
break;
|
||
case FILTER_RULE_MIME_TYPE:
|
||
g_variant_builder_add (&builder, "(us)", 1, rule->u.mime_type);
|
||
break;
|
||
case FILTER_RULE_PIXBUF_FORMATS:
|
||
{
|
||
GSList *f;
|
||
|
||
for (f = rule->u.pixbuf_formats; f; f = f->next)
|
||
{
|
||
GdkPixbufFormat *fmt = f->data;
|
||
gchar **mime_types;
|
||
int i;
|
||
|
||
mime_types = gdk_pixbuf_format_get_mime_types (fmt);
|
||
for (i = 0; mime_types[i]; i++)
|
||
g_variant_builder_add (&builder, "(us)", 1, mime_types[i]);
|
||
g_strfreev (mime_types);
|
||
}
|
||
}
|
||
break;
|
||
case FILTER_RULE_CUSTOM:
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return g_variant_new ("(s@a(us))", filter->name, g_variant_builder_end (&builder));
|
||
}
|
||
|
||
/**
|
||
* gtk_file_filter_new_from_gvariant:
|
||
* @variant: an a{sv} #GVariant
|
||
*
|
||
* Deserialize a file filter from an a{sv} variant in
|
||
* the format produced by gtk_file_filter_to_gvariant().
|
||
*
|
||
* Returns: (transfer full): a new #GtkFileFilter object
|
||
*
|
||
* Since: 3.22
|
||
*/
|
||
GtkFileFilter *
|
||
gtk_file_filter_new_from_gvariant (GVariant *variant)
|
||
{
|
||
GtkFileFilter *filter;
|
||
GVariantIter *iter;
|
||
const char *name;
|
||
int type;
|
||
char *tmp;
|
||
|
||
filter = gtk_file_filter_new ();
|
||
|
||
g_variant_get (variant, "(&sa(us))", &name, &iter);
|
||
|
||
gtk_file_filter_set_name (filter, name);
|
||
|
||
while (g_variant_iter_next (iter, "(u&s)", &type, &tmp))
|
||
{
|
||
switch (type)
|
||
{
|
||
case 0:
|
||
gtk_file_filter_add_pattern (filter, tmp);
|
||
break;
|
||
case 1:
|
||
gtk_file_filter_add_mime_type (filter, tmp);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
g_variant_iter_free (iter);
|
||
|
||
return filter;
|
||
}
|