diff options
Diffstat (limited to 'lib/egg/egg-menu-merge.c')
| -rw-r--r-- | lib/egg/egg-menu-merge.c | 1316 |
1 files changed, 1316 insertions, 0 deletions
diff --git a/lib/egg/egg-menu-merge.c b/lib/egg/egg-menu-merge.c new file mode 100644 index 000000000..17895ca99 --- /dev/null +++ b/lib/egg/egg-menu-merge.c @@ -0,0 +1,1316 @@ +#include <string.h> +#include "egg-menu-merge.h" +#include "eggtoolbar.h" +#include "eggseparatortoolitem.h" + +#ifndef _ +# define _(string) (string) +#endif + +#define NODE_INFO(node) ((EggMenuMergeNode *)node->data) + +typedef struct { + guint merge_id; + GQuark action_quark; +} NodeUIReference; + +static void egg_menu_merge_class_init (EggMenuMergeClass *class); +static void egg_menu_merge_init (EggMenuMerge *merge); + +static void egg_menu_merge_queue_update (EggMenuMerge *self); +static void egg_menu_merge_dirty_all (EggMenuMerge *self); + +static GNode *get_child_node (EggMenuMerge *self, GNode *parent, + const gchar *childname, + gint childname_length, + EggMenuMergeNodeType node_type, + gboolean create, gboolean top); +static GNode *egg_menu_merge_get_node (EggMenuMerge *self, + const gchar *path, + EggMenuMergeNodeType node_type, + gboolean create); +static guint egg_menu_merge_next_merge_id (EggMenuMerge *self); + +static void egg_menu_merge_node_prepend_ui_reference (EggMenuMergeNode *node, + guint merge_id, + GQuark action_quark); +static void egg_menu_merge_node_remove_ui_reference (EggMenuMergeNode *node, + guint merge_id); + +enum { + ADD_WIDGET, + REMOVE_WIDGET, + LAST_SIGNAL +}; + +static guint merge_signals[LAST_SIGNAL] = { 0 }; + +static GMemChunk *merge_node_chunk = NULL; + +GType +egg_menu_merge_get_type (void) +{ + static GtkType type = 0; + + if (!type) + { + static const GTypeInfo type_info = + { + sizeof (EggMenuMergeClass), + (GBaseInitFunc) NULL, + (GBaseFinalizeFunc) NULL, + (GClassInitFunc) egg_menu_merge_class_init, + (GClassFinalizeFunc) NULL, + NULL, + + sizeof (EggMenuMerge), + 0, /* n_preallocs */ + (GInstanceInitFunc) egg_menu_merge_init, + }; + + type = g_type_register_static (G_TYPE_OBJECT, + "EggMenuMerge", + &type_info, 0); + } + return type; +} + +static void +egg_menu_merge_class_init (EggMenuMergeClass *class) +{ + if (!merge_node_chunk) + merge_node_chunk = g_mem_chunk_create(EggMenuMergeNode, 64, + G_ALLOC_AND_FREE); + + merge_signals[ADD_WIDGET] = + g_signal_new ("add_widget", + G_OBJECT_CLASS_TYPE (class), + G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE, + G_STRUCT_OFFSET (EggMenuMergeClass, add_widget), NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + GTK_TYPE_WIDGET); + merge_signals[REMOVE_WIDGET] = + g_signal_new ("remove_widget", + G_OBJECT_CLASS_TYPE (class), + G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE, + G_STRUCT_OFFSET (EggMenuMergeClass, remove_widget), NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + GTK_TYPE_WIDGET); + +} + + +static void +egg_menu_merge_init (EggMenuMerge *self) +{ + guint merge_id; + GNode *node; + + self->accel_group = gtk_accel_group_new(); + + self->root_node = NULL; + self->action_groups = NULL; + + self->last_merge_id = 0; + + + merge_id = egg_menu_merge_next_merge_id(self); + node = get_child_node(self, NULL, "Root", 4, + EGG_MENU_MERGE_ROOT, TRUE, FALSE); + egg_menu_merge_node_prepend_ui_reference(NODE_INFO(node), merge_id, 0); + node = get_child_node(self, self->root_node, "popups", 6, + EGG_MENU_MERGE_POPUPS, TRUE, FALSE); + egg_menu_merge_node_prepend_ui_reference(NODE_INFO(node), merge_id, 0); +} + +EggMenuMerge * +egg_menu_merge_new (void) +{ + return g_object_new(EGG_TYPE_MENU_MERGE, NULL); +} + +void +egg_menu_merge_insert_action_group (EggMenuMerge *self, + EggActionGroup *action_group, gint pos) +{ + g_return_if_fail (EGG_IS_MENU_MERGE(self)); + g_return_if_fail (EGG_IS_ACTION_GROUP(action_group)); + g_return_if_fail (g_list_find(self->action_groups, action_group) == NULL); + + g_object_ref(action_group); + self->action_groups = g_list_insert(self->action_groups, action_group, pos); + + /* dirty all nodes, as action bindings may change */ + egg_menu_merge_dirty_all(self); +} + +void +egg_menu_merge_remove_action_group (EggMenuMerge *self, + EggActionGroup *action_group) +{ + g_return_if_fail (EGG_IS_MENU_MERGE(self)); + g_return_if_fail (EGG_IS_ACTION_GROUP(action_group)); + g_return_if_fail (g_list_find(self->action_groups, action_group) != NULL); + + self->action_groups = g_list_remove(self->action_groups, action_group); + g_object_unref(action_group); + + /* dirty all nodes, as action bindings may change */ + egg_menu_merge_dirty_all(self); +} + +GtkWidget * +egg_menu_merge_get_widget (EggMenuMerge *self, const gchar *path) +{ + GNode *node; + + /* ensure that there are no pending updates before we get the + * widget */ + egg_menu_merge_ensure_update(self); + + node = egg_menu_merge_get_node(self, path, EGG_MENU_MERGE_UNDECIDED, FALSE); + return NODE_INFO(node)->proxy; +} + +static GNode * +get_child_node(EggMenuMerge *self, GNode *parent, + const gchar *childname, gint childname_length, + EggMenuMergeNodeType node_type, + gboolean create, gboolean top) +{ + GNode *child = NULL; + + g_return_val_if_fail(parent == NULL || + (NODE_INFO(parent)->type != EGG_MENU_MERGE_MENUITEM && + NODE_INFO(parent)->type != EGG_MENU_MERGE_TOOLITEM), NULL); + + if (parent) + { + if (childname) + { + for (child = parent->children; child != NULL; child = child->next) + { + if (strlen(NODE_INFO(child)->name) == childname_length && + !strncmp(NODE_INFO(child)->name, childname, childname_length)) + { + /* if undecided about node type, set it */ + if (NODE_INFO(child)->type == EGG_MENU_MERGE_UNDECIDED) + NODE_INFO(child)->type = node_type; + + /* warn about type mismatch */ + if (NODE_INFO(child)->type != EGG_MENU_MERGE_UNDECIDED && + NODE_INFO(child)->type != node_type) + g_warning("node type doesn't match %d (%s is type %d)", + node_type, NODE_INFO(child)->name, + NODE_INFO(child)->type); + + return child; + } + } + } + if (!child && create) + { + EggMenuMergeNode *mnode; + + mnode = g_chunk_new0(EggMenuMergeNode, merge_node_chunk); + mnode->type = node_type; + mnode->name = g_strndup(childname, childname_length); + mnode->dirty = TRUE; + + if (top) + child = g_node_prepend_data(parent, mnode); + else + child = g_node_append_data(parent, mnode); + } + } + else + { + /* handle root node */ + if (self->root_node) + { + child = self->root_node; + if (strncmp(NODE_INFO(child)->name, childname, childname_length) !=0) + g_warning("root node name '%s' doesn't match '%s'", + childname, NODE_INFO(child)->name); + if (NODE_INFO(child)->type != EGG_MENU_MERGE_ROOT) + g_warning("base element must be of type ROOT"); + } + else if (create) + { + EggMenuMergeNode *mnode; + + mnode = g_chunk_new0(EggMenuMergeNode, merge_node_chunk); + mnode->type = node_type; + mnode->name = g_strndup(childname, childname_length); + mnode->dirty = TRUE; + + child = self->root_node = g_node_new(mnode); + } + } + + return child; +} + +static GNode * +egg_menu_merge_get_node(EggMenuMerge *self, const gchar *path, + EggMenuMergeNodeType node_type, gboolean create) +{ + const gchar *pos, *end; + GNode *parent, *node; + + end = path + strlen(path); + pos = path; + parent = node = NULL; + while (pos < end) + { + const gchar *slash; + gsize length; + + slash = strchr(pos, '/'); + if (slash) + length = slash - pos; + else + length = strlen(pos); + + node = get_child_node(self, parent, pos, length, EGG_MENU_MERGE_UNDECIDED, + create, FALSE); + if (!node) + return NULL; + + pos += length + 1; /* move past the node name and the slash too */ + parent = node; + } + + if (NODE_INFO(node)->type == EGG_MENU_MERGE_UNDECIDED) + NODE_INFO(node)->type = node_type; + return node; +} + +static guint +egg_menu_merge_next_merge_id (EggMenuMerge *self) +{ + self->last_merge_id++; + + return self->last_merge_id; +} + +static void +egg_menu_merge_node_prepend_ui_reference (EggMenuMergeNode *node, + guint merge_id, GQuark action_quark) +{ + NodeUIReference *reference; + + reference = g_new (NodeUIReference, 1); + reference->action_quark = action_quark; + reference->merge_id = merge_id; + + /* Prepend the reference */ + node->uifiles = g_list_prepend (node->uifiles, reference); + + node->dirty = TRUE; +} + +static void +egg_menu_merge_node_remove_ui_reference (EggMenuMergeNode *node, + guint merge_id) +{ + GList *p; + + for (p = node->uifiles; p != NULL; p = p->next) + { + NodeUIReference *reference = p->data; + + if (reference->merge_id == merge_id) + { + node->uifiles = g_list_remove_link (node->uifiles, p); + node->dirty = TRUE; + g_free (reference); + + break; + } + } +} + +/* -------------------- The UI file parser -------------------- */ + +typedef enum { + STATE_START, + STATE_ROOT, + STATE_MENU, + STATE_TOOLBAR, + STATE_POPUPS, + STATE_MENUITEM, + STATE_TOOLITEM, + STATE_END +} ParseState; + +typedef struct _ParseContext ParseContext; +struct _ParseContext +{ + ParseState state; + ParseState prev_state; + + EggMenuMerge *self; + + GNode *current; + + guint merge_id; +}; + +static void +start_element_handler (GMarkupParseContext *context, + const gchar *element_name, + const gchar **attribute_names, + const gchar **attribute_values, + gpointer user_data, + GError **error) +{ + ParseContext *ctx = user_data; + EggMenuMerge *self = ctx->self; + + gint i; + const gchar *node_name; + GQuark verb_quark; + gboolean top; + + gboolean raise_error = TRUE; + gchar *error_attr = NULL; + + //g_message("starting element %s", element_name); + + /* work out a name for this node. Either the name attribute, or + * element name */ + node_name = element_name; + verb_quark = 0; + top = FALSE; + for (i = 0; attribute_names[i] != NULL; i++) + { + if (!strcmp(attribute_names[i], "name")) + { + node_name = attribute_values[i]; + } + else if (!strcmp(attribute_names[i], "verb")) + { + verb_quark = g_quark_from_string(attribute_values[i]); + } + else if (!strcmp(attribute_names[i], "pos")) + { + top = !strcmp(attribute_values[i], "top"); + } + } + /* if no verb, then set it to the node's name */ + if (verb_quark == 0) + verb_quark = g_quark_from_string(node_name); + + switch (element_name[0]) + { + case 'R': + if (ctx->state == STATE_START && !strcmp(element_name, "Root")) + { + ctx->state = STATE_ROOT; + ctx->current = self->root_node; + raise_error = FALSE; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + } + break; + case 'm': + if (ctx->state == STATE_ROOT && !strcmp(element_name, "menu")) + { + ctx->state = STATE_MENU; + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_MENUBAR, + TRUE, FALSE); + if (NODE_INFO(ctx->current)->action_name == 0) + NODE_INFO(ctx->current)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + else if (ctx->state == STATE_MENU && !strcmp(element_name, "menuitem")) + { + GNode *node; + + ctx->state = STATE_MENUITEM; + node = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_MENUITEM, + TRUE, top); + if (NODE_INFO(node)->action_name == 0) + NODE_INFO(node)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (node), + ctx->merge_id, verb_quark); + NODE_INFO(node)->dirty = TRUE; + + raise_error = FALSE; + } + break; + case 'd': + if (ctx->state == STATE_ROOT && !strcmp(element_name, "dockitem")) + { + ctx->state = STATE_TOOLBAR; + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_TOOLBAR, + TRUE, FALSE); + if (NODE_INFO(ctx->current)->action_name == 0) + NODE_INFO(ctx->current)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + break; + case 'p': + if (ctx->state == STATE_ROOT && !strcmp(element_name, "popups")) + { + ctx->state = STATE_POPUPS; + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_POPUPS, + TRUE, FALSE); + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + else if (ctx->state == STATE_POPUPS && !strcmp(element_name, "popup")) + { + ctx->state = STATE_MENU; + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_MENU, + TRUE, FALSE); + if (NODE_INFO(ctx->current)->action_name == 0) + NODE_INFO(ctx->current)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + else if ((ctx->state == STATE_MENU || ctx->state == STATE_TOOLBAR) && + !strcmp(element_name, "placeholder")) + { + if (ctx->state == STATE_MENU) + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_MENU_PLACEHOLDER, + TRUE, top); + else + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER, + TRUE, top); + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + break; + case 's': + if (ctx->state == STATE_MENU && !strcmp(element_name, "submenu")) + { + ctx->state = STATE_MENU; + ctx->current = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_MENU, + TRUE, top); + if (NODE_INFO(ctx->current)->action_name == 0) + NODE_INFO(ctx->current)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (ctx->current), + ctx->merge_id, verb_quark); + NODE_INFO(ctx->current)->dirty = TRUE; + + raise_error = FALSE; + } + else if ((ctx->state == STATE_MENU || ctx->state == STATE_TOOLBAR) && + !strcmp(element_name, "separator")) + { + GNode *node; + + if (ctx->state == STATE_MENU) + ctx->state = STATE_MENUITEM; + else + ctx->state = STATE_TOOLITEM; + node = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_SEPARATOR, + TRUE, top); + if (NODE_INFO(node)->action_name == 0) + NODE_INFO(node)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (node), + ctx->merge_id, verb_quark); + NODE_INFO(node)->dirty = TRUE; + + raise_error = FALSE; + } + break; + case 't': + if (ctx->state == STATE_TOOLBAR && !strcmp(element_name, "toolitem")) + { + GNode *node; + + ctx->state = STATE_TOOLITEM; + node = get_child_node(self, ctx->current, + node_name, strlen(node_name), + EGG_MENU_MERGE_TOOLITEM, + TRUE, top); + if (NODE_INFO(node)->action_name == 0) + NODE_INFO(node)->action_name = verb_quark; + + egg_menu_merge_node_prepend_ui_reference (NODE_INFO (node), + ctx->merge_id, verb_quark); + NODE_INFO(node)->dirty = TRUE; + + raise_error = FALSE; + } + break; + default: + break; + } + if (raise_error) + { + gint line_number, char_number; + + g_markup_parse_context_get_position (context, + &line_number, &char_number); + if (error_attr) + g_set_error (error, + G_MARKUP_ERROR, + G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE, + _("Unknown attribute '%s' on line %d char %d"), + error_attr, + line_number, char_number); + else + g_set_error (error, + G_MARKUP_ERROR, + G_MARKUP_ERROR_UNKNOWN_ELEMENT, + _("Unknown tag '%s' on line %d char %d"), + element_name, + line_number, char_number); + } +} + +static void +end_element_handler (GMarkupParseContext *context, + const gchar *element_name, + gpointer user_data, + GError **error) +{ + ParseContext *ctx = user_data; + EggMenuMerge *self = ctx->self; + + //g_message("ending element %s (state=%d)", element_name, ctx->state); + + switch (ctx->state) + { + case STATE_START: + g_warning("shouldn't get any end tags in start state"); + /* should we GError here? */ + break; + case STATE_ROOT: + if (ctx->current != self->root_node) + g_warning("we are in STATE_ROOT, but the current node isn't the root"); + ctx->current = NULL; + ctx->state = STATE_END; + break; + case STATE_MENU: + ctx->current = ctx->current->parent; + if (NODE_INFO(ctx->current)->type == EGG_MENU_MERGE_ROOT) /* menubar */ + ctx->state = STATE_ROOT; + else if (NODE_INFO(ctx->current)->type == EGG_MENU_MERGE_POPUPS) /* popup */ + ctx->state = STATE_POPUPS; + /* else, stay in STATE_MENU state */ + break; + case STATE_TOOLBAR: + ctx->current = ctx->current->parent; + /* we conditionalise this test, in case we are closing off a + * placeholder */ + if (NODE_INFO(ctx->current)->type == EGG_MENU_MERGE_ROOT) + ctx->state = STATE_ROOT; + /* else, stay in STATE_TOOLBAR state */ + break; + case STATE_POPUPS: + ctx->current = ctx->current->parent; + ctx->state = STATE_ROOT; + break; + case STATE_MENUITEM: + ctx->state = STATE_MENU; + break; + case STATE_TOOLITEM: + ctx->state = STATE_TOOLBAR; + break; + case STATE_END: + g_warning("shouldn't get any end tags at this point"); + /* should do an error here */ + break; + } +} + +static void +cleanup (GMarkupParseContext *context, + GError *error, + gpointer user_data) +{ + ParseContext *ctx = user_data; + EggMenuMerge *self = ctx->self; + + ctx->current = NULL; + /* should also walk through the tree and get rid of nodes related to + * this UI file's tag */ + + egg_menu_merge_remove_ui (self, ctx->merge_id); +} + +static GMarkupParser ui_parser = { + start_element_handler, + end_element_handler, + NULL, + NULL, + cleanup +}; + +guint +egg_menu_merge_add_ui_from_string (EggMenuMerge *self, + const gchar *buffer, guint length, + GError **error) +{ + ParseContext ctx = { 0 }; + GMarkupParseContext *context; + gboolean res = TRUE; + + g_return_val_if_fail(EGG_IS_MENU_MERGE(self), FALSE); + g_return_val_if_fail(buffer != NULL, FALSE); + + ctx.state = STATE_START; + ctx.self = self; + ctx.current = NULL; + ctx.merge_id = egg_menu_merge_next_merge_id (self); + + context = g_markup_parse_context_new(&ui_parser, 0, &ctx, NULL); + if (length < 0) + length = strlen(buffer); + + if (g_markup_parse_context_parse(context, buffer, length, error)) + { + if (!g_markup_parse_context_end_parse(context, error)) + res = FALSE; + } + else + res = FALSE; + + g_markup_parse_context_free (context); + + egg_menu_merge_queue_update(self); + + if (res) + return ctx.merge_id; + return 0; +} + +guint +egg_menu_merge_add_ui_from_file (EggMenuMerge *self, + const gchar *filename, + GError **error) +{ + gchar *buffer; + gint length; + guint res; + + if (!g_file_get_contents (filename, &buffer, &length, error)) + return 0; + + res = egg_menu_merge_add_ui_from_string(self, buffer, length, error); + g_free(buffer); + + return res; +} + +static gboolean +remove_ui (GNode *node, gpointer user_data) +{ + guint merge_id = GPOINTER_TO_UINT (user_data); + + egg_menu_merge_node_remove_ui_reference (NODE_INFO (node), merge_id); + + return FALSE; /* continue */ +} + +void +egg_menu_merge_remove_ui (EggMenuMerge *self, guint merge_id) +{ + g_node_traverse(self->root_node, G_POST_ORDER, G_TRAVERSE_ALL, -1, + remove_ui, GUINT_TO_POINTER (merge_id)); + + egg_menu_merge_queue_update(self); +} + +/* -------------------- Updates -------------------- */ + + +static EggAction * +get_action_by_name (EggMenuMerge *merge, const char *action_name) +{ + GList *tmp; + + if (!action_name) + return NULL; + + /* lookup name */ + for (tmp = merge->action_groups; tmp != NULL; tmp = tmp->next) + { + EggActionGroup *action_group = tmp->data; + EggAction *action; + + action = egg_action_group_get_action (action_group, action_name); + + if (action) + return action; + } + + return NULL; +} + +static gboolean +find_menu_position (GNode *node, GtkWidget **menushell_p, gint *pos_p) +{ + GtkWidget *menushell; + gint pos; + + g_return_val_if_fail(node != NULL, FALSE); + g_return_val_if_fail(NODE_INFO(node)->type == EGG_MENU_MERGE_MENU || + NODE_INFO(node)->type == EGG_MENU_MERGE_MENU_PLACEHOLDER || + NODE_INFO(node)->type == EGG_MENU_MERGE_MENUITEM || + NODE_INFO(node)->type == EGG_MENU_MERGE_SEPARATOR, + FALSE); + + /* first sibling -- look at parent */ + if (node->prev == NULL) + { + GNode *parent; + + parent = node->parent; + switch (NODE_INFO(parent)->type) + { + case EGG_MENU_MERGE_MENUBAR: + menushell = NODE_INFO(parent)->proxy; + pos = 0; + break; + case EGG_MENU_MERGE_MENU: + menushell = NODE_INFO(parent)->proxy; + if (GTK_IS_MENU_ITEM(menushell)) + menushell = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menushell)); + pos = 0; + break; + case EGG_MENU_MERGE_MENU_PLACEHOLDER: + menushell = gtk_widget_get_parent(NODE_INFO(parent)->proxy); + g_return_val_if_fail(GTK_IS_MENU_SHELL(menushell), FALSE); + pos = g_list_index(GTK_MENU_SHELL(menushell)->children, + NODE_INFO(parent)->proxy) + 1; + break; + default: + g_warning("%s: bad parent node type %d", G_STRLOC, + NODE_INFO(parent)->type); + return FALSE; + } + } + else + { + GtkWidget *prev_child; + GNode *sibling; + + sibling = node->prev; + if (NODE_INFO(sibling)->type == EGG_MENU_MERGE_MENU_PLACEHOLDER) + prev_child = NODE_INFO(sibling)->extra; /* second Separator */ + else + prev_child = NODE_INFO(sibling)->proxy; + + g_return_val_if_fail(GTK_IS_WIDGET(prev_child), FALSE); + menushell = gtk_widget_get_parent(prev_child); + g_return_val_if_fail(GTK_IS_MENU_SHELL(menushell), FALSE); + + pos = g_list_index(GTK_MENU_SHELL(menushell)->children, prev_child) + 1; + } + + if (menushell_p) + *menushell_p = menushell; + if (pos_p) + *pos_p = pos; + + return TRUE; +} + +static gboolean +find_toolbar_position (GNode *node, GtkWidget **toolbar_p, gint *pos_p) +{ + GtkWidget *toolbar; + gint pos; + + g_return_val_if_fail(node != NULL, FALSE); + g_return_val_if_fail(NODE_INFO(node)->type == EGG_MENU_MERGE_TOOLBAR || + NODE_INFO(node)->type == EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER || + NODE_INFO(node)->type == EGG_MENU_MERGE_TOOLITEM || + NODE_INFO(node)->type == EGG_MENU_MERGE_SEPARATOR, + FALSE); + + /* first sibling -- look at parent */ + if (node->prev == NULL) + { + GNode *parent; + + parent = node->parent; + switch (NODE_INFO(parent)->type) + { + case EGG_MENU_MERGE_TOOLBAR: + toolbar = NODE_INFO(parent)->proxy; + pos = 0; + break; + case EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER: + toolbar = gtk_widget_get_parent(NODE_INFO(parent)->proxy); + g_return_val_if_fail(EGG_IS_TOOLBAR(toolbar), FALSE); + pos = g_list_index(egg_toolbar_get_tool_items(EGG_TOOLBAR(toolbar)), + NODE_INFO(parent)->proxy) + 1; + break; + default: + g_warning("%s: bad parent node type %d", G_STRLOC, + NODE_INFO(parent)->type); + return FALSE; + } + } + else + { + GtkWidget *prev_child; + GNode *sibling; + + sibling = node->prev; + if (NODE_INFO(sibling)->type == EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER) + prev_child = NODE_INFO(sibling)->extra; /* second Separator */ + else + prev_child = NODE_INFO(sibling)->proxy; + + g_return_val_if_fail(GTK_IS_WIDGET(prev_child), FALSE); + toolbar = gtk_widget_get_parent(prev_child); + g_return_val_if_fail(EGG_IS_TOOLBAR(toolbar), FALSE); + + pos = g_list_index(egg_toolbar_get_tool_items(EGG_TOOLBAR(toolbar)), + prev_child) + 1; + } + + if (toolbar_p) + *toolbar_p = toolbar; + if (pos_p) + *pos_p = pos; + + return TRUE; +} + +static void +update_node (EggMenuMerge *self, GNode *node) +{ + EggMenuMergeNode *info; + GNode *child; + EggAction *action; + GList *tmp; + + g_return_if_fail (node != NULL); + g_return_if_fail (NODE_INFO(node) != NULL); + + info = NODE_INFO(node); + + if (NODE_INFO(node)->dirty) + { + const gchar *action_name; + NodeUIReference *ref; + + if (info->uifiles == NULL) { + /* We may need to remove this node. + * This must be done in post order + */ + goto recurse_children; + } + + ref = info->uifiles->data; + action_name = g_quark_to_string (ref->action_quark); + action = get_action_by_name (self, action_name); + + NODE_INFO(node)->dirty = FALSE; + + /* Check if the node doesn't have an action and must have an action */ + if (action == NULL && + info->type != EGG_MENU_MERGE_MENUBAR && + info->type != EGG_MENU_MERGE_TOOLBAR && + info->type != EGG_MENU_MERGE_SEPARATOR && + info->type != EGG_MENU_MERGE_MENU_PLACEHOLDER && + info->type != EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER) + { + /* FIXME: Should we warn here? */ + goto recurse_children; + } + + /* If the widget already has a proxy and the action hasn't changed, then + * we don't have to do anything. + */ + if (info->proxy != NULL && + action == info->action) + { + goto recurse_children; + } + + if (info->action) + g_object_unref (info->action); + info->action = action; + if (info->action) + g_object_ref (info->action); + + switch (info->type) + { + case EGG_MENU_MERGE_MENUBAR: + if (info->proxy == NULL) + { + info->proxy = gtk_menu_bar_new (); + gtk_widget_show (info->proxy); + g_signal_emit (self, merge_signals[ADD_WIDGET], 0, info->proxy); + } + break; + case EGG_MENU_MERGE_MENU: + { + GtkWidget *prev_submenu = NULL; + /* remove the proxy if it is of the wrong type ... */ + if (info->proxy && G_OBJECT_TYPE(info->proxy) != + EGG_ACTION_GET_CLASS(info->action)->menu_item_type) + { + prev_submenu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(info->proxy)); + if (prev_submenu) + { + g_object_ref (prev_submenu); + gtk_menu_item_set_submenu(GTK_MENU_ITEM(info->proxy),NULL); + } + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + info->proxy = NULL; + } + /* create proxy if needed ... */ + if (info->proxy == NULL) + { + GtkWidget *menushell; + gint pos; + GNode *parent; + + parent = node->parent; + + if (parent && NODE_INFO (parent)->type == EGG_MENU_MERGE_POPUPS) + { + info->proxy = gtk_menu_new(); + } + else if (find_menu_position(node, &menushell, &pos)) + { + GtkWidget *menu; + info->proxy = egg_action_create_menu_item (info->action); + menu = gtk_menu_new(); + gtk_menu_item_set_submenu(GTK_MENU_ITEM(info->proxy), menu); + gtk_menu_set_accel_group (GTK_MENU (menu), self->accel_group); + gtk_menu_shell_insert (GTK_MENU_SHELL (menushell), + info->proxy, pos); + } + } + else + { + egg_action_connect_proxy (info->action, info->proxy); + } + if (prev_submenu) + { + gtk_menu_item_set_submenu (GTK_MENU_ITEM (info->proxy), + prev_submenu); + g_object_unref (prev_submenu); + } + } + break; + case EGG_MENU_MERGE_UNDECIDED: + g_warning("found 'undecided node!"); + break; + case EGG_MENU_MERGE_ROOT: + break; + case EGG_MENU_MERGE_TOOLBAR: + if (info->proxy == NULL) + { + info->proxy = egg_toolbar_new (); + gtk_widget_show (info->proxy); + g_signal_emit (self, merge_signals[ADD_WIDGET], 0, info->proxy); + } + break; + case EGG_MENU_MERGE_MENU_PLACEHOLDER: + /* create menu items for placeholders if necessary ... */ + if (!GTK_IS_SEPARATOR_MENU_ITEM (info->proxy) || + !GTK_IS_SEPARATOR_MENU_ITEM (info->extra)) + { + if (info->proxy) + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + if (info->extra) + gtk_container_remove(GTK_CONTAINER(info->extra->parent), + info->extra); + info->proxy = NULL; + info->extra = NULL; + } + if (info->proxy == NULL) + { + GtkWidget *menushell; + gint pos; + + if (find_menu_position(node, &menushell, &pos)) + { + NODE_INFO(node)->proxy = gtk_separator_menu_item_new(); + gtk_menu_shell_insert(GTK_MENU_SHELL(menushell), + NODE_INFO(node)->proxy, pos); + //gtk_widget_show(NODE_INFO(node)->proxy); + + NODE_INFO(node)->extra = gtk_separator_menu_item_new(); + gtk_menu_shell_insert(GTK_MENU_SHELL(menushell), + NODE_INFO(node)->extra, pos+1); + //gtk_widget_show(NODE_INFO(node)->extra); + } + } + break; + case EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER: + /* create toolbar items for placeholders if necessary ... */ + if (!EGG_IS_SEPARATOR_TOOL_ITEM (info->proxy) || + !EGG_IS_SEPARATOR_TOOL_ITEM (info->extra)) + { + if (info->proxy) + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + if (info->extra) + gtk_container_remove(GTK_CONTAINER(info->extra->parent), + info->extra); + info->proxy = NULL; + info->extra = NULL; + } + if (info->proxy == NULL) + { + GtkWidget *toolbar; + gint pos; + + if (find_toolbar_position(node, &toolbar, &pos)) + { + EggToolItem *item; + + item = egg_separator_tool_item_new(); + egg_toolbar_insert_tool_item(EGG_TOOLBAR(toolbar), item, pos); + NODE_INFO(node)->proxy = GTK_WIDGET (item); + //gtk_widget_show(NODE_INFO(node)->proxy); + + item = egg_separator_tool_item_new(); + egg_toolbar_insert_tool_item(EGG_TOOLBAR(toolbar), item, pos+1); + NODE_INFO(node)->extra = GTK_WIDGET (item); + //gtk_widget_show(NODE_INFO(node)->extra); + } + } + break; + case EGG_MENU_MERGE_POPUPS: + break; + case EGG_MENU_MERGE_MENUITEM: + /* remove the proxy if it is of the wrong type ... */ + if (info->proxy && G_OBJECT_TYPE(info->proxy) != + EGG_ACTION_GET_CLASS(info->action)->menu_item_type) + { + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + info->proxy = NULL; + } + /* create proxy if needed ... */ + if (info->proxy == NULL) + { + GtkWidget *menushell; + gint pos; + + if (find_menu_position(node, &menushell, &pos)) + { + info->proxy = egg_action_create_menu_item (info->action); + + gtk_menu_shell_insert (GTK_MENU_SHELL (menushell), + info->proxy, pos); + } + } + else + { + gtk_menu_item_set_submenu(GTK_MENU_ITEM(info->proxy), NULL); + egg_action_connect_proxy (info->action, info->proxy); + } + break; + case EGG_MENU_MERGE_TOOLITEM: + /* remove the proxy if it is of the wrong type ... */ + if (info->proxy && G_OBJECT_TYPE(info->proxy) != + EGG_ACTION_GET_CLASS(info->action)->toolbar_item_type) + { + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + info->proxy = NULL; + } + /* create proxy if needed ... */ + if (info->proxy == NULL) + { + GtkWidget *toolbar; + gint pos; + + if (find_toolbar_position(node, &toolbar, &pos)) + { + info->proxy = egg_action_create_tool_item (info->action); + + egg_toolbar_insert_tool_item (EGG_TOOLBAR (toolbar), + EGG_TOOL_ITEM (info->proxy), pos); + } + } + else + { + egg_action_connect_proxy (info->action, info->proxy); + } + break; + case EGG_MENU_MERGE_SEPARATOR: + if (NODE_INFO (node->parent)->type == EGG_MENU_MERGE_TOOLBAR || + NODE_INFO (node->parent)->type == EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER) + { + GtkWidget *toolbar; + gint pos; + + if (EGG_IS_SEPARATOR_TOOL_ITEM(info->proxy)) + { + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + info->proxy = NULL; + } + + if (find_toolbar_position(node, &toolbar, &pos)) + { + EggToolItem *item = egg_separator_tool_item_new(); + egg_toolbar_insert_tool_item (EGG_TOOLBAR (toolbar), item, pos); + info->proxy = GTK_WIDGET (item); + gtk_widget_show(info->proxy); + } + } + else + { + GtkWidget *menushell; + gint pos; + + if (GTK_IS_SEPARATOR_MENU_ITEM(info->proxy)) + { + gtk_container_remove(GTK_CONTAINER(info->proxy->parent), + info->proxy); + info->proxy = NULL; + } + + if (find_menu_position(node, &menushell, &pos)) + { + info->proxy = gtk_separator_menu_item_new(); + gtk_menu_shell_insert (GTK_MENU_SHELL (menushell), + info->proxy, pos); + gtk_widget_show(info->proxy); + } + } + break; + } + + /* if this node has a widget, but it is the wrong type, remove it */ + } + + recurse_children: + /* process children */ + child = node->children; + while (child) + { + GNode *current; + + current = child; + child = current->next; + update_node (self, current); + } + + /* handle cleanup of dead nodes */ + if (node->children == NULL && NODE_INFO(node)->uifiles == NULL) + { + if (NODE_INFO(node)->proxy) + gtk_widget_destroy(NODE_INFO(node)->proxy); + if ((NODE_INFO(node)->type == EGG_MENU_MERGE_MENU_PLACEHOLDER || + NODE_INFO(node)->type == EGG_MENU_MERGE_TOOLBAR_PLACEHOLDER) && + NODE_INFO(node)->extra) + gtk_widget_destroy(NODE_INFO(node)->extra); + g_chunk_free(NODE_INFO(node), merge_node_chunk); + g_node_destroy(node); + } +} + +static gboolean +do_updates(EggMenuMerge *self) +{ + /* this function needs to check through the tree for dirty nodes. + * For such nodes, it needs to do the following: + * + * 1) check if they are referenced by any loaded UI files anymore. + * In which case, the proxy widget should be destroyed, unless + * there are any subnodes. + * + * 2) lookup the action for this node again. If it is different to + * the current one (or if no previous action has been looked up), + * the proxy is reconnected to the new action (or a new proxy widget + * is created and added to the parent container). + */ + + g_message("do_updates"); + + update_node (self, self->root_node); + + self->update_tag = 0; + return FALSE; +} + +static void +egg_menu_merge_queue_update (EggMenuMerge *self) +{ + if (self->update_tag != 0) + return; + + self->update_tag = g_idle_add((GSourceFunc)do_updates, self); +} + +void +egg_menu_merge_ensure_update (EggMenuMerge *self) +{ + if (self->update_tag != 0) + { + g_source_remove(self->update_tag); + do_updates(self); + } +} + +static gboolean +dirty_traverse_func (GNode *node, gpointer data) +{ + NODE_INFO(node)->dirty = TRUE; + return FALSE; +} + +static void +egg_menu_merge_dirty_all (EggMenuMerge *self) +{ + g_node_traverse(self->root_node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, + dirty_traverse_func, NULL); + egg_menu_merge_queue_update(self); +} |