EphyCommandManager

EphyCommandManager — Performs commands, such as cut/copy/paste

Synopsis




            EphyCommandManager;
            EphyCommandManagerIface;
void        ephy_command_manager_do_command (EphyCommandManager *manager,
                                             const char *command);
gboolean    ephy_command_manager_can_do_command
                                            (EphyCommandManager *manager,
                                             const char *command);

Object Hierarchy


  GInterface
   +----EphyCommandManager

Signal Prototypes


"command-changed"
            void        user_function      (EphyCommandManager *manager,
                                            gchar *command,
                                            gpointer user_data);

Description

An EphyCommandManager is an interface to an EphyEmbed which is used to perform commands, such as cut/copy/paste. To perform any command, use ephy_command_manager_do_command(). To test the availability of a command, use ephy_command_manager_can_do_command(). The availability of commands depends on the selection and actions previously performed in the EphyEmbed. For instance, cmd_copy is only available if text has been selected; cmd_undo is only available if the user has a text input focused and has typed or erased some of its text.

Example 1. Copying selected text in an EphyEmbed

#include <ephy-embed.h>
#include <ephy-command-manager.h>

static void
copy_selected_text (EphyEmbed *embed)
{
	EphyCommandManager *manager;

	manager = EPHY_COMMAND_MANAGER (embed);
	g_return_if_fail (EPHY_IS_COMMAND_MANAGER (manager));

	if (!ephy_command_manager_can_do_command (manager, "cmd_copy")) return;

	ephy_command_manager_do_command (manager, "cmd_copy");
}

The EphyCommandManager interface can perform any command which is defined in Mozilla. However, for purposes of abstraction, only a certain subset of commands should be used:

Available Commands

cmd_copy	Copies selected text
cmd_cut	Cuts selected text.
cmd_paste	Pastes text from the clipboard (for example, into a text entry)
cmd_undo	Undoes the last action (for example, typing text into a text entry
cmd_redo	Redoes previously `undo`ne actions (for example, in a text entry)

Details

EphyCommandManager

typedef struct _EphyCommandManager EphyCommandManager;

EphyCommandManagerIface

typedef struct {
	GTypeInterface base_iface;

	void		(* do_command)		(EphyCommandManager *manager,
						 const char *command);
	gboolean	(* can_do_command)	(EphyCommandManager *manager,
						 const char *command);

	/* Signals */

	void		(* command_changed)	(EphyCommandManager *manager,
						 char *command);
} EphyCommandManagerIface;

ephy_command_manager_do_command ()

void        ephy_command_manager_do_command (EphyCommandManager *manager,
                                             const char *command);

Performs command.

`manager` :	an EphyCommandManager
`command` :	the command

ephy_command_manager_can_do_command ()

gboolean    ephy_command_manager_can_do_command
                                            (EphyCommandManager *manager,
                                             const char *command);

Returns TRUE if command can be performed.

`manager` :	an EphyCommandManager
`command` :	the command
Returns :	`TRUE` if `command` can be performed.

Signals

The "command-changed" signal

void        user_function                  (EphyCommandManager *manager,
                                            gchar *command,
                                            gpointer user_data);

The ::command-changed signal is emitted when command has changed from being available to unavailable, or vice-versa. The new availability can be tested with ephy_command_manager_can_do_command().

`manager` :
`command` :	The command whose avalability has changed
`user_data` :	user data set when the signal handler was connected.