forked from AuroraMiddleware/gtk
399 lines
11 KiB
C
399 lines
11 KiB
C
/*
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* Copyright © 2011, 2012 Canonical Ltd.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* licence, 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, but
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* 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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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#include "config.h"
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#include "gtkbuilderprivate.h"
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#include "gtkbuildableprivate.h"
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#include <glib/gi18n-lib.h>
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#include <gio/gio.h>
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#include <string.h>
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struct frame
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{
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GMenu *menu;
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GMenuItem *item;
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struct frame *prev;
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};
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typedef struct
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{
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ParserData *parser_data;
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struct frame frame;
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/* attributes */
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char *attribute;
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GVariantType *type;
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GString *string;
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/* translation */
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char *context;
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gboolean translatable;
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} GtkBuilderMenuState;
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static void
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gtk_builder_menu_push_frame (GtkBuilderMenuState *state,
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GMenu *menu,
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GMenuItem *item)
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{
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struct frame *new;
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new = g_slice_new (struct frame);
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*new = state->frame;
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state->frame.menu = menu;
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state->frame.item = item;
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state->frame.prev = new;
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}
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static void
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gtk_builder_menu_pop_frame (GtkBuilderMenuState *state)
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{
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struct frame *prev = state->frame.prev;
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if (state->frame.item)
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{
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g_assert (prev->menu != NULL);
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g_menu_append_item (prev->menu, state->frame.item);
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g_object_unref (state->frame.item);
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}
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state->frame = *prev;
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g_slice_free (struct frame, prev);
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}
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static void
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gtk_builder_menu_start_element (GtkBuildableParseContext *context,
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const char *element_name,
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const char **attribute_names,
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const char **attribute_values,
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gpointer user_data,
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GError **error)
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{
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GtkBuilderMenuState *state = user_data;
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#define COLLECT(first, ...) \
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g_markup_collect_attributes (element_name, \
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attribute_names, attribute_values, error, \
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first, __VA_ARGS__, G_MARKUP_COLLECT_INVALID)
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#define OPTIONAL G_MARKUP_COLLECT_OPTIONAL
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#define BOOLEAN G_MARKUP_COLLECT_BOOLEAN
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#define STRING G_MARKUP_COLLECT_STRING
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if (state->frame.menu)
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{
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/* Can have '<item>', '<submenu>' or '<section>' here. */
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if (g_str_equal (element_name, "item"))
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{
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GMenuItem *item;
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if (COLLECT (G_MARKUP_COLLECT_INVALID, NULL))
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{
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item = g_menu_item_new (NULL, NULL);
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gtk_builder_menu_push_frame (state, NULL, item);
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}
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return;
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}
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else if (g_str_equal (element_name, "submenu"))
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{
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const char *id;
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if (COLLECT (STRING | OPTIONAL, "id", &id))
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{
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GMenuItem *item;
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GMenu *menu;
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menu = g_menu_new ();
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item = g_menu_item_new_submenu (NULL, G_MENU_MODEL (menu));
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gtk_builder_menu_push_frame (state, menu, item);
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if (id != NULL)
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_gtk_builder_add_object (state->parser_data->builder, id, G_OBJECT (menu));
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g_object_unref (menu);
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}
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return;
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}
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else if (g_str_equal (element_name, "section"))
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{
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const char *id;
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if (COLLECT (STRING | OPTIONAL, "id", &id))
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{
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GMenuItem *item;
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GMenu *menu;
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menu = g_menu_new ();
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item = g_menu_item_new_section (NULL, G_MENU_MODEL (menu));
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gtk_builder_menu_push_frame (state, menu, item);
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if (id != NULL)
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_gtk_builder_add_object (state->parser_data->builder, id, G_OBJECT (menu));
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g_object_unref (menu);
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}
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return;
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}
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}
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if (state->frame.item)
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{
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/* Can have '<attribute>' or '<link>' here. */
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if (g_str_equal (element_name, "attribute"))
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{
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const char *typestr;
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const char *name;
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const char *ctxt;
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if (COLLECT (STRING, "name", &name,
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OPTIONAL | BOOLEAN, "translatable", &state->translatable,
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OPTIONAL | STRING, "context", &ctxt,
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OPTIONAL | STRING, "comments", NULL, /* ignore, just for translators */
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OPTIONAL | STRING, "type", &typestr))
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{
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if (typestr && !g_variant_type_string_is_valid (typestr))
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{
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g_set_error (error, G_VARIANT_PARSE_ERROR,
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G_VARIANT_PARSE_ERROR_INVALID_TYPE_STRING,
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"Invalid GVariant type string '%s'", typestr);
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return;
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}
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state->type = typestr ? g_variant_type_new (typestr) : NULL;
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state->string = g_string_new (NULL);
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state->attribute = g_strdup (name);
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state->context = g_strdup (ctxt);
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gtk_builder_menu_push_frame (state, NULL, NULL);
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}
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return;
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}
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if (g_str_equal (element_name, "link"))
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{
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const char *name;
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const char *id;
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if (COLLECT (STRING, "name", &name,
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STRING | OPTIONAL, "id", &id))
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{
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GMenu *menu;
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menu = g_menu_new ();
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g_menu_item_set_link (state->frame.item, name, G_MENU_MODEL (menu));
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gtk_builder_menu_push_frame (state, menu, NULL);
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if (id != NULL)
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_gtk_builder_add_object (state->parser_data->builder, id, G_OBJECT (menu));
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g_object_unref (menu);
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}
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return;
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}
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}
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{
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GPtrArray *element_stack;
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element_stack = gtk_buildable_parse_context_get_element_stack (context);
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if (element_stack->len > 1)
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g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT,
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_("Element <%s> not allowed inside <%s>"),
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element_name,
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(const char *) g_ptr_array_index (element_stack, element_stack->len - 2));
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else
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g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_UNKNOWN_ELEMENT,
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_("Element <%s> not allowed at toplevel"), element_name);
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}
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}
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static void
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gtk_builder_menu_end_element (GtkBuildableParseContext *context,
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const char *element_name,
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gpointer user_data,
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GError **error)
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{
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GtkBuilderMenuState *state = user_data;
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gtk_builder_menu_pop_frame (state);
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if (state->string)
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{
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GVariant *value;
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char *text;
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text = g_string_free (state->string, FALSE);
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state->string = NULL;
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/* do the translation if necessary */
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if (state->translatable)
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{
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const char *translated;
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if (state->context)
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translated = g_dpgettext2 (state->parser_data->domain, state->context, text);
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else
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translated = g_dgettext (state->parser_data->domain, text);
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if (translated != text)
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{
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/* it's safe because we know that translated != text */
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g_free (text);
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text = g_strdup (translated);
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}
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}
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if (state->type == NULL)
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/* No type string specified -> it's a normal string. */
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g_menu_item_set_attribute (state->frame.item, state->attribute, "s", text);
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/* Else, we try to parse it according to the type string. If
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* error is set here, it will follow us out, ending the parse.
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*
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* We still need to free everything, though, so ignore it here.
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*/
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else if ((value = g_variant_parse (state->type, text, NULL, NULL, error)))
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{
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g_menu_item_set_attribute_value (state->frame.item, state->attribute, value);
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g_variant_unref (value);
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}
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if (state->type)
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{
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g_variant_type_free (state->type);
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state->type = NULL;
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}
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g_free (state->context);
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state->context = NULL;
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g_free (state->attribute);
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state->attribute = NULL;
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g_free (text);
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}
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}
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static void
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gtk_builder_menu_text (GtkBuildableParseContext *context,
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const char *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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GtkBuilderMenuState *state = user_data;
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int i;
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for (i = 0; i < text_len; i++)
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if (!g_ascii_isspace (text[i]))
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{
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if (state->string)
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g_string_append_len (state->string, text, text_len);
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else
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g_set_error (error, G_MARKUP_ERROR, G_MARKUP_ERROR_INVALID_CONTENT,
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_("Text may not appear inside <%s>"),
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gtk_buildable_parse_context_get_element (context));
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break;
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}
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}
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static void
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gtk_builder_menu_error (GtkBuildableParseContext *context,
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GError *error,
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gpointer user_data)
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{
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GtkBuilderMenuState *state = user_data;
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while (state->frame.prev)
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{
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struct frame *prev = state->frame.prev;
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state->frame = *prev;
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g_slice_free (struct frame, prev);
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}
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if (state->string)
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g_string_free (state->string, TRUE);
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if (state->type)
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g_variant_type_free (state->type);
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g_free (state->attribute);
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g_free (state->context);
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g_slice_free (GtkBuilderMenuState, state);
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}
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static GtkBuildableParser gtk_builder_menu_subparser =
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{
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gtk_builder_menu_start_element,
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gtk_builder_menu_end_element,
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gtk_builder_menu_text,
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gtk_builder_menu_error
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};
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void
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_gtk_builder_menu_start (ParserData *parser_data,
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const char *element_name,
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const char **attribute_names,
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const char **attribute_values,
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GError **error)
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{
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GtkBuilderMenuState *state;
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char *id;
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state = g_slice_new0 (GtkBuilderMenuState);
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state->parser_data = parser_data;
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gtk_buildable_parse_context_push (&parser_data->ctx, >k_builder_menu_subparser, state);
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if (COLLECT (STRING, "id", &id))
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{
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GMenu *menu;
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menu = g_menu_new ();
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_gtk_builder_add_object (state->parser_data->builder, id, G_OBJECT (menu));
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gtk_builder_menu_push_frame (state, menu, NULL);
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g_object_unref (menu);
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}
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}
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void
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_gtk_builder_menu_end (ParserData *parser_data)
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{
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GtkBuilderMenuState *state;
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state = gtk_buildable_parse_context_pop (&parser_data->ctx);
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gtk_builder_menu_pop_frame (state);
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g_assert (state->frame.prev == NULL);
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g_assert (state->frame.item == NULL);
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g_assert (state->frame.menu == NULL);
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g_slice_free (GtkBuilderMenuState, state);
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}
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