Top | ![]() |
![]() |
![]() |
![]() |
void | add-hint | Run Last |
void | destroy | Run Last |
void | emit-event-on | Run Last |
void | emit-verb-on | Run Last |
void | remove-hint | Run Last |
The Bonobo UI code as exposed through the BonoboWindow, BonoboUIComponent and BonoboUIContainer API's use the BonoboUIEngine. The Engine effectively maintains a BonoboUIXml tree internaly, and a list of BonoboUISync synchronizers that, when the tree changes are used to re-sync the associated widgets with the XML model.
The Engine can be tweaked by getting its pointer from an associated BonoboWindow eg. this can be useful for setting the configuration path. To allow a BonoboWindow to be configurable you need to do:
Example 7. How to make your UI user configurable
1 2 3 |
bonobo_ui_engine_config_set_path ( bonobo_window_get_ui_engine (win), "/my-application-name/UIConfig/kvps"); |
where "UIConfig/kvps" is some convenient path into your
gnome_config file.
Key value pairs (kvps) are stored in this, mangled into a comma delimited string and these are used to clobber the XML on merges, eg.
inside your ~/.gnome/my-application-name file, will
ensure that whenever the item with path '/Toolbar' is
modified the 'look="both"' attribute will be stamped
onto it, effecively forcing a certain look.
void
bonobo_ui_engine_deregister_dead_components
(BonoboUIEngine *engine
);
Detect any components that have died and deregister them - unmerging their UI elements.
void bonobo_ui_engine_deregister_component_by_ref (BonoboUIEngine *engine
,Bonobo_Unknown ref
);
Deregisters component with reference ref
from engine
.
void bonobo_ui_engine_deregister_component (BonoboUIEngine *engine
,const char *name
);
Deregisters component of name
from engine
.
void bonobo_ui_engine_register_component (BonoboUIEngine *engine
,const char *name
,Bonobo_Unknown component
);
Registers component
with engine
by name
.
GList *
bonobo_ui_engine_get_component_names (BonoboUIEngine *engine
);
Bonobo_Unknown bonobo_ui_engine_get_component (BonoboUIEngine *engine
,const char *name
);
void bonobo_ui_engine_config_set_path (BonoboUIEngine *engine
,const char *path
);
const char *
bonobo_ui_engine_config_get_path (BonoboUIEngine *engine
);
void bonobo_ui_engine_set_ui_container (BonoboUIEngine *engine
,BonoboUIContainer *ui_container
);
Associates a given UI Container with this BonoboUIEngine.
BonoboUIContainer *
bonobo_ui_engine_get_ui_container (BonoboUIEngine *engine
);
Fetches the associated UI Container
void
bonobo_ui_engine_freeze (BonoboUIEngine *engine
);
bonobo_ui_engine_freeze
is deprecated and should not be used in newly-written code.
This increments the freeze count on the tree, while this count > 0 no syncronization between the internal XML model and the widget views occurs. This means that many simple merges can be glupped together with little performance impact and overhead.
void
bonobo_ui_engine_thaw (BonoboUIEngine *engine
);
bonobo_ui_engine_thaw
is deprecated and should not be used in newly-written code.
This decrements the freeze count and if it is 0 causes the UI widgets to be re-synched with the XML model, see also bonobo_ui_engine_freeze
void
bonobo_ui_engine_update (BonoboUIEngine *engine
);
bonobo_ui_engine_update
is deprecated and should not be used in newly-written code.
This function is called to update the entire UI model synchronizing any changes in it with the widget tree where neccessary
BonoboUIEngine * bonobo_ui_engine_construct (BonoboUIEngine *engine
,GObject *view
);
Construct a new bonobo_ui_engine
BonoboUIEngine *
bonobo_ui_engine_new (GObject *view
);
Create a new BonoboUIEngine structure
GObject *
bonobo_ui_engine_get_view (BonoboUIEngine *engine
);
This returns the associated view, often a BonoboWindow
void bonobo_ui_engine_add_sync (BonoboUIEngine *engine
,BonoboUISync *sync
);
Add a BonoboUISync synchronizer to the engine
void bonobo_ui_engine_remove_sync (BonoboUIEngine *engine
,BonoboUISync *sync
);
Remove a specified BonoboUISync synchronizer from the engine
GSList *
bonobo_ui_engine_get_syncs (BonoboUIEngine *engine
);
Retrieve a list of available synchronizers.
void bonobo_ui_engine_update_node (BonoboUIEngine *engine
,BonoboUISync *sync
,BonoboUINode *node
);
This function is used to write recursive synchronizers and is intended only for internal / privilaged use.
By the time this returns, due to re-enterancy, node points at undefined memory.
void bonobo_ui_engine_queue_update (BonoboUIEngine *engine
,GtkWidget *widget
,BonoboUINode *node
,BonoboUINode *cmd_node
);
This function is used to queue a state update on
widget
, essentialy transfering any state from the
XML model into the widget view. This is queued to
avoid re-enterancy problems.
GtkWidget * bonobo_ui_engine_build_control (BonoboUIEngine *engine
,BonoboUINode *node
);
A helper function for synchronizers, this creates a control if possible from the node's associated object, stamps the node as containing a control and sets its widget.
BonoboUINode *
bonobo_ui_engine_widget_get_node (GtkWidget *widget
);
void bonobo_ui_engine_widget_set_node (BonoboUIEngine *engine
,GtkWidget *widget
,BonoboUINode *node
);
Used internaly to associate a widget with a node, some synchronisers need to be able to execute code on widget creation.
BonoboUIError bonobo_ui_engine_xml_set_prop (BonoboUIEngine *engine
,const char *path
,const char *property
,const char *value
,const char *component
);
This function sets the property of a node in the internal tree
representation at path
in engine
.
CORBA_char * bonobo_ui_engine_xml_get_prop (BonoboUIEngine *engine
,const char *path
,const char *prop
,gboolean *invalid_path
);
This function fetches the property prop
at node
at path
in the internal structure.
void bonobo_ui_engine_prune_widget_info (BonoboUIEngine *engine
,BonoboUINode *node
,gboolean save_custom
);
This function destroys any widgets associated with
node
and all its children, if save_custom
, any widget
that is a custom widget ( such as a control ) will be
preserved. All widgets flagged ROOT are preserved always.
BonoboUINode * bonobo_ui_engine_get_path (BonoboUIEngine *engine
,const char *path
);
This routine gets a node from the internal XML tree
pointed at by path
void bonobo_ui_engine_dirty_tree (BonoboUIEngine *engine
,BonoboUINode *node
);
Mark all the node's children as being dirty and needing a re-synch with their widget views.
void bonobo_ui_engine_clean_tree (BonoboUIEngine *engine
,BonoboUINode *node
);
This cleans the tree, marking the node and its children as not needing a re-synch with their widget views.
void bonobo_ui_engine_dump (BonoboUIEngine *engine
,FILE *out
,const char *msg
);
This is a debugging function mostly for internal
and testing use, it dumps the XML tree, including
the associated, and overridden nodes in a wierd
hackish format to the out
stream with the
helpful msg
prepended.
CORBA_Object bonobo_ui_engine_node_get_object (BonoboUIEngine *engine
,BonoboUINode *node
);
gboolean bonobo_ui_engine_node_is_dirty (BonoboUIEngine *engine
,BonoboUINode *node
);
GtkWidget * bonobo_ui_engine_node_get_widget (BonoboUIEngine *engine
,BonoboUINode *node
);
Gets the widget associated with node
const char * bonobo_ui_engine_node_get_id (BonoboUIEngine *engine
,BonoboUINode *node
);
Each component has an associated textual id or name - see bonobo_ui_engine_register_component
BonoboUINode * bonobo_ui_engine_get_cmd_node (BonoboUIEngine *engine
,BonoboUINode *from_node
);
This function seeks the command node associated
with from_node
in engine
's internal tree.
void bonobo_ui_engine_node_set_dirty (BonoboUIEngine *engine
,BonoboUINode *node
,gboolean dirty
);
Set node
s dirty bit to dirty
.
void bonobo_ui_engine_stamp_custom (BonoboUIEngine *engine
,BonoboUINode *node
);
Marks a node as containing a custom widget.
void bonobo_ui_engine_widget_set (BonoboUIEngine *engine
,const char *path
,GtkWidget *widget
);
void bonobo_ui_engine_stamp_root (BonoboUIEngine *engine
,BonoboUINode *node
,GtkWidget *widget
);
This stamps node
with widget
which is marked as
being a ROOT node, so the engine will never destroy
it.
void bonobo_ui_engine_add_hint (BonoboUIEngine *engine
,const char *str
);
This fires the 'add_hint' signal.
void
bonobo_ui_engine_remove_hint (BonoboUIEngine *engine
);
This fires the 'remove_hint' signal
void bonobo_ui_engine_emit_verb_on (BonoboUIEngine *engine
,BonoboUINode *node
);
This fires the 'emit_verb' signal
void bonobo_ui_engine_emit_event_on (BonoboUIEngine *engine
,BonoboUINode *node
,const char *state
);
This fires the 'emit_event_on' signal
void bonobo_ui_engine_emit_verb_on_w (BonoboUIEngine *engine
,GtkWidget *widget
);
This function looks up the node from widget
and
emits the 'emit_verb_on' signal on that node.
void bonobo_ui_engine_emit_event_on_w (BonoboUIEngine *engine
,GtkWidget *widget
,const char *state
);
This function looks up the node from widget
and
emits the 'emit_event_on' signal on that node
passint state
as the new state.
char * bonobo_ui_engine_get_attr (BonoboUINode *node
,BonoboUINode *cmd_node
,const char *attr
);
This function is used to get node attributes in many
UI synchronizers, it first attempts to get the attribute
from node
, and if this fails falls back to cmd_node
.
void bonobo_ui_engine_widget_attach_node (GtkWidget *widget
,BonoboUINode *node
);
Associate node
with widget
CORBA_char * bonobo_ui_engine_xml_get (BonoboUIEngine *engine
,const char *path
,gboolean node_only
);
This function fetches the node at path
in the
internal structure, and if node_only
dumps the
node to an XML string, otherwise it dumps it and
its children.
gboolean bonobo_ui_engine_xml_node_exists (BonoboUIEngine *engine
,const char *path
);
BonoboUIError bonobo_ui_engine_xml_merge_tree (BonoboUIEngine *engine
,const char *path
,BonoboUINode *tree
,const char *component
);
This function merges the XML tree
into the internal tree
representation as children of the node at path
in engine
.
BonoboUIError bonobo_ui_engine_xml_rm (BonoboUIEngine *engine
,const char *path
,const char *by_component
);
Remove a chunk of the xml tree pointed at by path
in engine
, if by_component
then only remove items
associated with that component - possibly revealing
other overridden items.
BonoboUIError bonobo_ui_engine_object_set (BonoboUIEngine *engine
,const char *path
,Bonobo_Unknown object
,CORBA_Environment *ev
);
This associates a CORBA Object reference with a node in the tree, most often this is done to insert a Control's reference into a 'control' element.
BonoboUIError bonobo_ui_engine_object_get (BonoboUIEngine *engine
,const char *path
,Bonobo_Unknown *object
,CORBA_Environment *ev
);
This extracts a CORBA object reference associated with
the node at path
in engine
, and returns it in the
reference pointed to by object
.
void bonobo_ui_engine_exec_verb (BonoboUIEngine *engine
,const CORBA_char *cname
,CORBA_Environment *ev
);
void bonobo_ui_engine_ui_event (BonoboUIEngine *engine
,const CORBA_char *id
,const Bonobo_UIComponent_EventType type
,const CORBA_char *state
,CORBA_Environment *ev
);
typedef struct { GObjectClass parent_class; /* Signals */ void (*add_hint) (BonoboUIEngine *engine, const char *str); void (*remove_hint) (BonoboUIEngine *engine); void (*emit_verb_on) (BonoboUIEngine *engine, BonoboUINode *node); void (*emit_event_on) (BonoboUIEngine *engine, BonoboUINode *node, const char *state); void (*destroy) (BonoboUIEngine *engine); } BonoboUIEngineClass;
“add-hint”
signalvoid user_function (BonoboUIEngine *bonobouiengine, gchar *arg1, gpointer user_data)
bonobouiengine |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
“destroy”
signalvoid user_function (BonoboUIEngine *bonobouiengine, gpointer user_data)
bonobouiengine |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
“emit-event-on”
signalvoid user_function (BonoboUIEngine *bonobouiengine, gpointer arg1, gchar *arg2, gpointer user_data)
bonobouiengine |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
“emit-verb-on”
signalvoid user_function (BonoboUIEngine *bonobouiengine, gpointer arg1, gpointer user_data)
bonobouiengine |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
“remove-hint”
signalvoid user_function (BonoboUIEngine *bonobouiengine, gpointer user_data)
bonobouiengine |
the object which received the signal. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last