Optional aInstancePtr: objectA run time mechanism for interface discovery.
NS_OK if the interface is supported by the associated instance, NS_NOINTERFACE if it is not.
aInstancePtr must not be null.
[in] A requested interface IID
[out] A pointer to an interface pointer to receive the result.
Register an observer on the specified command. The observer's Observe method will get called when the state (enabled/disabled, or toggled etc) of the command changes.
You can register the same observer on multiple commmands by calling this multiple times.
Execute the specified command. The command will be executed in aTargetWindow if it is specified. If aTargetWindow is null, it will go to the focused window.
param: aCommandParams, a list of name-value pairs of command parameters, may be null for parameter-less commands.
Get the state of the specified commands.
On input: aCommandParams filled in with values that the caller cares about, most of which are command-specific (see the command documentation for details). One boolean value, "enabled", applies to all commands, and, in return will be set to indicate whether the command is enabled (equivalent to calling isCommandEnabled).
aCommandName is the name of the command that needs the state aTargetWindow is the source of command controller (null means use focus controller) On output: aCommandParams: values set by the caller filled in with state from the command.
Stop an observer from observering the specified command. If the observer was also registered on ther commands, they will continue to be observed.
Passing an empty string in 'aCommandObserved' will remove the observer from all commands.
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nsICommandManager is an interface used to executing user-level commands, and getting the state of available commands.
Commands are identified by strings, which are documented elsewhere. In addition, the list of required and optional parameters for each command, that are passed in via the nsICommandParams, are also documented elsewhere. (Where? Need a good location for this).