forked from osmocom/wireshark
598 lines
18 KiB
C
598 lines
18 KiB
C
/* plugin_if.c
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* An API for Wireshark plugins
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*
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* This enables wireshark dissectors, especially those implemented by plugins
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* to register menubar entries, which then will call a pre-defined callback
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* function for the dissector or plugin.
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*
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* Also it implements additional methods, which allow plugins to interoperate
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* with the main GUI.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/epan.h>
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#include <epan/proto.h>
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#include "plugin_if.h"
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static GList * menubar_entries = NULL;
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static GList * menubar_menunames = NULL;
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static GHashTable * plugin_if_callback_functions;
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static void
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plugin_if_init_hashtable(void)
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{
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if ( plugin_if_callback_functions == 0 )
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plugin_if_callback_functions = g_hash_table_new(g_direct_hash, g_direct_equal);
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}
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static void plugin_if_call_gui_cb(plugin_if_callback_t actionType, GHashTable * dataSet)
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{
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plugin_if_gui_cb action;
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plugin_if_init_hashtable();
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if ( g_hash_table_lookup_extended(plugin_if_callback_functions, GINT_TO_POINTER(actionType), NULL, (gpointer*)&action) )
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{
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if ( action != NULL )
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action(dataSet);
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}
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}
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extern GList * ext_menubar_get_entries(void)
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{
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return menubar_entries;
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}
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extern ext_menu_t * ext_menubar_register_menu(int proto_id, const gchar * menulabel,
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gboolean is_plugin)
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{
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ext_menubar_t * entry = NULL;
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gchar * name = NULL;
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/* A name for the entry must be provided */
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g_assert(menulabel != NULL && strlen ( menulabel ) > 0 );
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/* A protocol must exist for the given id */
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g_assert(find_protocol_by_id(proto_id) != NULL);
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/* Create unique name, which is used by GTK to provide the menu */
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name = g_strconcat(proto_get_protocol_filter_name(proto_id), "Menu", NULL);
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/* For now, a protocol may only register one main menu */
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g_assert(g_list_find(menubar_menunames, name) == NULL);
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entry = (ext_menubar_t *)g_malloc0(sizeof(ext_menubar_t));
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entry->type = EXT_MENUBAR_MENU;
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entry->proto = proto_id;
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entry->is_plugin = is_plugin;
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entry->parent_menu = 0;
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/* Create a name for this submenu */
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entry->name = name;
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entry->label = g_strdup(menulabel);
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entry->tooltip = g_strdup(menulabel);
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entry->submenu_cnt = 0;
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entry->item_cnt = 0;
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menubar_entries = g_list_append(menubar_entries, entry);
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menubar_menunames = g_list_append(menubar_menunames, name);
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return entry;
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}
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extern ext_menu_t * ext_menubar_set_parentmenu(ext_menu_t * menu, const gchar * parentmenu)
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{
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g_assert(menu != NULL && menu->parent == NULL);
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g_assert(parentmenu != 0);
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menu->parent_menu = g_strdup(parentmenu);
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return menu;
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}
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extern ext_menu_t * ext_menubar_add_submenu(ext_menu_t * parent, const gchar *menulabel)
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{
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ext_menubar_t * entry = NULL;
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/* A name for the entry must be provided */
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g_assert(menulabel != NULL && strlen ( menulabel ) > 0 );
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/* Parent must be a valid parent */
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g_assert(parent != NULL && parent->type == EXT_MENUBAR_MENU);
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parent->submenu_cnt++;
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/* Create submenu entry */
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entry = (ext_menubar_t *)g_malloc0(sizeof(ext_menubar_t));
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entry->type = EXT_MENUBAR_MENU;
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entry->parent = parent;
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/* Just a convenience */
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entry->proto = parent->proto;
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entry->is_plugin = parent->is_plugin;
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/* Create unique name, which is used by GTK to provide the menu */
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entry->name = g_strdup_printf("%sS%02d", parent->name, parent->submenu_cnt);
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entry->label = g_strdup(menulabel);
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entry->tooltip = g_strdup(menulabel);
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parent->children = g_list_append(parent->children, entry);
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return entry;
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}
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static void ext_menubar_add_generic_entry (
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ext_menubar_entry_t type, ext_menu_t * parent, const gchar * label,
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const gchar * tooltip, ext_menubar_action_cb callback, gpointer user_data )
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{
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ext_menubar_t * entry = NULL;
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/* A valid parent must exist */
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g_assert(parent != NULL && parent->type == EXT_MENUBAR_MENU);
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/* A label for the entry must be provided */
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g_assert(label != NULL && strlen ( label ) > 0 );
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parent->item_cnt++;
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/* Create menu entry */
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entry = (ext_menubar_t*)g_malloc0(sizeof(ext_menubar_t));
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entry->type = type;
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/* Create unique name, which is used by GTK to provide the menu */
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entry->name = g_strdup_printf("%sI%02d", parent->name, parent->item_cnt);
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entry->label = g_strdup(label);
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if ( tooltip != NULL && strlen(tooltip) > 0 )
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entry->tooltip = g_strdup(tooltip);
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entry->callback = callback;
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entry->user_data = user_data;
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parent->children = g_list_append(parent->children, entry);
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}
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extern void ext_menubar_add_entry(ext_menu_t * parent, const gchar *label,
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const gchar *tooltip, ext_menubar_action_cb callback, gpointer user_data)
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{
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/* A callback must be provided */
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g_assert(callback != NULL);
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ext_menubar_add_generic_entry ( EXT_MENUBAR_ITEM, parent, label, tooltip, callback, user_data );
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}
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extern void ext_menubar_add_website(ext_menu_t * parent, const gchar *label,
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const gchar *tooltip, const gchar *url)
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{
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/* An url for the entry must be provided */
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g_assert(url != NULL && strlen ( url ) > 0 );
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ext_menubar_add_generic_entry ( EXT_MENUBAR_URL, parent, label, tooltip, NULL, (gpointer) g_strdup(url) );
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}
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extern void ext_menubar_add_separator(ext_menu_t *parent)
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{
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ext_menubar_add_generic_entry ( EXT_MENUBAR_SEPARATOR, parent, "-", NULL, NULL, NULL );
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}
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/* Implementation of external toolbar handlers */
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static GList * toolbar_entries = NULL;
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extern GList * ext_toolbar_get_entries(void)
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{
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return toolbar_entries;
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}
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ext_toolbar_t * ext_toolbar_register_toolbar(const gchar * toolbarlabel)
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{
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ext_toolbar_t * entry = NULL;
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/* A name for the entry must be provided */
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g_assert(toolbarlabel != NULL && strlen ( toolbarlabel ) > 0 );
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entry = g_new0(ext_toolbar_t, 1);
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entry->type = EXT_TOOLBAR_BAR;
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/* Create a name for this toolbar */
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entry->name = g_strdup(toolbarlabel);
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entry->tooltip = g_strdup(toolbarlabel);
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entry->submenu_cnt = 0;
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entry->item_cnt = 0;
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toolbar_entries = g_list_append(toolbar_entries, entry);
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return entry;
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}
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static gint
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ext_toolbar_compare(gconstpointer a, gconstpointer b)
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{
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if ( !a || !b )
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return -1;
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const ext_toolbar_t * ta = (const ext_toolbar_t *)a;
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const ext_toolbar_t * tb = (const ext_toolbar_t *)b;
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return strcmp(ta->name, tb->name);
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}
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void ext_toolbar_unregister_toolbar_by_name(const gchar * toolbar_name)
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{
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GList * walker = 0;
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if ( ! toolbar_name )
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return;
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walker = toolbar_entries;
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while ( walker && walker->data )
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{
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ext_toolbar_t * entry = (ext_toolbar_t *)walker->data;
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if ( g_strcmp0(entry->name, toolbar_name) == 0)
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{
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ext_toolbar_unregister_toolbar(entry);
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break;
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}
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walker = g_list_next(walker);
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}
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}
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void ext_toolbar_unregister_toolbar(ext_toolbar_t * toolbar)
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{
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if ( ! toolbar )
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return;
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GList * entry = g_list_find_custom(toolbar_entries, toolbar, (GCompareFunc) ext_toolbar_compare);
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if ( entry && entry->data )
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{
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ext_toolbar_t * et = (ext_toolbar_t *)entry->data;
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toolbar_entries = g_list_remove(toolbar_entries, et);
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if ( ! g_list_find_custom(toolbar_entries, toolbar, (GCompareFunc) ext_toolbar_compare) )
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{
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GHashTable * dataSet = g_hash_table_new(g_str_hash, g_str_equal);
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g_hash_table_insert( dataSet, g_strdup("toolbar_name"), g_strdup(et->name) );
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plugin_if_call_gui_cb(PLUGIN_IF_REMOVE_TOOLBAR, dataSet);
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g_free(et->name);
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g_free(et->tooltip);
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g_free(et->defvalue);
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g_free(et->regex);
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g_free(et);
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}
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}
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}
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static gint
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ext_toolbar_insert_sort(gconstpointer a, gconstpointer b)
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{
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const ext_toolbar_t * ca = (const ext_toolbar_t *)a;
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const ext_toolbar_t * cb = (const ext_toolbar_t *)b;
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if ( ca == 0 || cb == 0 )
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return 0;
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/* Sort buttons after rest of objects */
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if ( ca->item_type == EXT_TOOLBAR_BUTTON && cb->item_type != EXT_TOOLBAR_BUTTON )
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return 1;
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else if ( ca->item_type != EXT_TOOLBAR_BUTTON && cb->item_type == EXT_TOOLBAR_BUTTON )
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return -1;
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else
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{
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if ( ca->item_cnt > cb->item_cnt )
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return 2;
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else if ( ca->item_cnt < cb->item_cnt )
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return -2;
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else
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return 0;
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}
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}
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ext_toolbar_t *
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ext_toolbar_add_entry( ext_toolbar_t * parent, ext_toolbar_item_t type, const gchar *label,
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const gchar *defvalue, const gchar *tooltip, gboolean capture_only, GList * value_list,
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gboolean is_required, const gchar * regex, ext_toolbar_action_cb callback, gpointer user_data)
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{
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ext_toolbar_t * entry = NULL;
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/* A valid parent must exist */
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g_assert(parent != NULL && parent->type == EXT_TOOLBAR_BAR);
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/* A label for the entry must be provided */
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g_assert(label != NULL && strlen ( label ) > 0 );
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/* A callback must be provided */
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g_assert(callback != NULL);
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parent->item_cnt++;
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/* Create menu entry */
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entry = g_new0(ext_toolbar_t, 1);
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entry->type = EXT_TOOLBAR_ITEM;
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entry->item_type = type;
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entry->item_cnt = g_list_length(parent->children) + 1;
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entry->name = g_strdup(label);
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if ( tooltip != NULL && strlen(tooltip) > 0 )
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entry->tooltip = g_strdup(tooltip);
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if ( defvalue != NULL && strlen(defvalue) > 0 )
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entry->defvalue = g_strdup(defvalue);
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if ( value_list != NULL && g_list_length(value_list) > 0 )
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entry->values = g_list_copy(value_list);
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entry->regex = g_strdup(regex);
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entry->is_required = is_required;
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entry->capture_only = capture_only;
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entry->callback = callback;
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entry->user_data = user_data;
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parent->children = g_list_insert_sorted(parent->children, entry, ext_toolbar_insert_sort);
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return entry;
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}
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static gint
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ext_toolbar_search_label(gconstpointer tb, gconstpointer lbl)
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{
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if ( ! tb || ! lbl )
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return -1;
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const ext_toolbar_t * toolbar = (const ext_toolbar_t *) tb;
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if ( toolbar->type != EXT_TOOLBAR_ITEM )
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return -2;
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const gchar * label = (const gchar * )lbl;
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return g_strcmp0(toolbar->name, label);
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}
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ext_toolbar_t * ext_toolbar_entry_by_label(const ext_toolbar_t * toolbar, const gchar * label)
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{
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ext_toolbar_t * result = 0;
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GList * entry = g_list_find_custom(toolbar->children, label, ext_toolbar_search_label);
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if ( entry )
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result = (ext_toolbar_t *)entry->data;
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return result;
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}
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GList * ext_toolbar_add_val(GList * entries, gchar * value, gchar * display, gboolean is_default)
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{
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ext_toolbar_value_t * newval = g_new0(ext_toolbar_value_t, 1);
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newval->value = g_strdup(value);
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newval->display = g_strdup(display);
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newval->is_default = is_default;
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return g_list_append(entries, newval);
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}
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typedef struct _ext_toolbar_update_entry_t
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{
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ext_toolbar_action_cb callback;
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gpointer item_data;
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} ext_toolbar_update_entry_t;
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typedef struct _ext_toolbar_update_list_t
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{
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ext_toolbar_t * item;
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GList * entries;
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} ext_toolbar_update_list_t;
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static gint
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ext_toolbar_find_item(gconstpointer a, gconstpointer b)
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{
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if ( a == 0 || b == 0 )
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return -1;
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const ext_toolbar_update_list_t * item = (const ext_toolbar_update_list_t *)a;
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const ext_toolbar_t * entry = (const ext_toolbar_t *)b;
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if ( item->item && g_strcmp0 ( item->item->name, entry->name ) == 0 )
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return 0;
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return -1;
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}
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static GList * toolbar_updates = NULL;
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void ext_toolbar_register_update_cb(ext_toolbar_t * entry, ext_toolbar_action_cb callback, gpointer item_data)
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{
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if ( entry == 0 || item_data == 0 || callback == 0 )
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return;
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ext_toolbar_update_list_t * update = NULL;
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GList * update_list = g_list_find_custom(toolbar_updates, entry, ext_toolbar_find_item);
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if ( ! update_list )
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{
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update = g_new0(ext_toolbar_update_list_t, 1);
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update->item = entry;
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toolbar_updates = g_list_append(toolbar_updates, update);
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}
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else
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{
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update = (ext_toolbar_update_list_t*)update_list->data;
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}
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ext_toolbar_update_entry_t * update_entry = g_new0(ext_toolbar_update_entry_t, 1);
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update_entry->callback = callback;
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update_entry->item_data = item_data;
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update->entries = g_list_append(update->entries, update_entry);
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}
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static void
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ext_toolbar_update_entry(ext_toolbar_update_type_t update_type, ext_toolbar_t * entry, gpointer data, gpointer idx, gboolean silent)
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{
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GList * update = g_list_find_custom(toolbar_updates, entry, ext_toolbar_find_item);
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GList * walker = NULL;
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if ( ! update || ! update->data )
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return;
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ext_toolbar_update_t * update_data = g_new0(ext_toolbar_update_t, 1);
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update_data->user_data = data;
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update_data->data_index = idx;
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update_data->silent = silent;
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update_data->type = update_type;
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walker = ((ext_toolbar_update_list_t *)(update->data))->entries;
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while ( walker && walker->data )
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{
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ext_toolbar_update_entry_t * update_entry = (ext_toolbar_update_entry_t *)walker->data;
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/* Call Callback */
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if ( update_entry->callback && update_entry->item_data )
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update_entry->callback(entry, update_entry->item_data, update_data);
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walker = g_list_next(walker);
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}
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g_free(update_data);
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}
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void ext_toolbar_update_value(ext_toolbar_t * entry, gpointer data, gboolean silent)
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{
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ext_toolbar_update_entry( EXT_TOOLBAR_UPDATE_VALUE, entry, data, NULL, silent );
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}
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void ext_toolbar_update_data(ext_toolbar_t * entry, gpointer data, gboolean silent)
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{
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if ( entry->item_type == EXT_TOOLBAR_SELECTOR )
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ext_toolbar_update_entry( EXT_TOOLBAR_UPDATE_DATA, entry, data, NULL, silent );
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}
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void ext_toolbar_update_data_by_index(ext_toolbar_t * entry, gpointer data, gpointer idx, gboolean silent)
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{
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if ( entry->item_type == EXT_TOOLBAR_SELECTOR )
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ext_toolbar_update_entry( EXT_TOOLBAR_UPDATE_DATABYINDEX, entry, data, idx, silent );
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}
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void ext_toolbar_update_data_add_entry(ext_toolbar_t * entry, gpointer data, gpointer idx, gboolean silent)
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{
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if ( entry->item_type == EXT_TOOLBAR_SELECTOR )
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ext_toolbar_update_entry( EXT_TOOLBAR_UPDATE_DATA_ADD, entry, data, idx, silent );
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}
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void ext_toolbar_update_data_remove_entry(ext_toolbar_t * entry, gpointer data, gpointer idx, gboolean silent)
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{
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if ( entry->item_type == EXT_TOOLBAR_SELECTOR )
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ext_toolbar_update_entry( EXT_TOOLBAR_UPDATE_DATA_REMOVE, entry, data, idx, silent );
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}
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void ext_toolbar_update_data_set_active(ext_toolbar_t * entry, gboolean status)
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{
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ext_toolbar_update_entry(EXT_TOOLBAR_SET_ACTIVE, entry, GINT_TO_POINTER(status ? 1 : 0), 0, TRUE );
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}
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/* Implementation of GUI callback methods follows.
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* This is a necessity, as using modern UI systems, gui interfaces often operate
|
|
* in different threads then the calling application. Even more so, if the calling
|
|
* application is implemented using a separate plugin. Therefore the external menubars
|
|
* cannot call gui functionality directly, the gui has to perform the function within
|
|
* it' own scope. */
|
|
|
|
extern void plugin_if_apply_filter(const char * filter_string, gboolean force)
|
|
{
|
|
plugin_if_callback_t actionType;
|
|
GHashTable * dataSet = NULL;
|
|
|
|
actionType = ( force == TRUE ) ? PLUGIN_IF_FILTER_ACTION_APPLY : PLUGIN_IF_FILTER_ACTION_PREPARE;
|
|
dataSet = g_hash_table_new(g_str_hash, g_str_equal);
|
|
|
|
g_hash_table_insert( dataSet, g_strdup("action_type"), (gpointer) &actionType );
|
|
g_hash_table_insert( dataSet, g_strdup("filter_string"), g_strdup(filter_string) );
|
|
g_hash_table_insert( dataSet, g_strdup("force"), (gpointer) &force );
|
|
|
|
plugin_if_call_gui_cb(actionType, dataSet);
|
|
}
|
|
|
|
extern void plugin_if_goto_frame(guint32 framenr)
|
|
{
|
|
GHashTable * dataSet = NULL;
|
|
|
|
dataSet = g_hash_table_new(g_str_hash, g_str_equal);
|
|
|
|
g_hash_table_insert( dataSet, g_strdup("frame_nr"), GUINT_TO_POINTER(framenr) );
|
|
|
|
plugin_if_call_gui_cb(PLUGIN_IF_GOTO_FRAME, dataSet);
|
|
}
|
|
|
|
extern void plugin_if_save_preference(const char * pref_module, const char * pref_key, const char * pref_value)
|
|
{
|
|
GHashTable * dataSet = NULL;
|
|
|
|
dataSet = g_hash_table_new(g_str_hash, g_str_equal);
|
|
|
|
g_hash_table_insert( dataSet, g_strdup("pref_module"), g_strdup(pref_module) );
|
|
g_hash_table_insert( dataSet, g_strdup("pref_key"), g_strdup(pref_key) );
|
|
g_hash_table_insert( dataSet, g_strdup("pref_value"), g_strdup(pref_value) );
|
|
|
|
plugin_if_call_gui_cb(PLUGIN_IF_PREFERENCE_SAVE, dataSet);
|
|
}
|
|
|
|
extern void plugin_if_get_ws_info(ws_info_t **ws_info_ptr)
|
|
{
|
|
static ws_info_t ws_info = { FALSE, FILE_CLOSED, NULL, 0, 0, FALSE };
|
|
#ifdef HAVE_LIBPCAP
|
|
|
|
GHashTable * dataSet;
|
|
gchar * pluginKey = g_strdup("ws_info");
|
|
|
|
dataSet = g_hash_table_new(g_str_hash, g_str_equal);
|
|
|
|
g_hash_table_insert(dataSet, pluginKey, &ws_info);
|
|
|
|
plugin_if_call_gui_cb(PLUGIN_IF_GET_WS_INFO, dataSet);
|
|
|
|
g_hash_table_destroy(dataSet);
|
|
g_free(pluginKey);
|
|
|
|
#else
|
|
|
|
/* Initialise the ws_info structure */
|
|
|
|
ws_info.ws_info_supported = FALSE;
|
|
ws_info.cf_count = 0;
|
|
ws_info.cf_filename = NULL;
|
|
ws_info.cf_framenr = 0;
|
|
ws_info.frame_passed_dfilter = FALSE;
|
|
ws_info.cf_state = FILE_CLOSED;
|
|
|
|
#endif /* HAVE_LIBPCAP */
|
|
|
|
*ws_info_ptr = &ws_info;
|
|
}
|
|
|
|
extern void plugin_if_register_gui_cb(plugin_if_callback_t actionType, plugin_if_gui_cb callback)
|
|
{
|
|
plugin_if_init_hashtable();
|
|
|
|
if ( ! g_hash_table_lookup_extended(plugin_if_callback_functions, GINT_TO_POINTER(actionType), NULL, NULL ) )
|
|
g_hash_table_insert(plugin_if_callback_functions, GINT_TO_POINTER(actionType), (gpointer)callback);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|