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CHAPTER 5: Interapplication Communication with Scripts BridgeTalk message object 189

BridgeTalk message object functions

send()

bridgeTalkObj.send ([timoutInSecs[, launchParameters]])

timoutInSecs

Optional. A maximum number of seconds to wait for a result before returning

from this function. The message is sent synchronously, and the function does

not return until the target has processed the message or this number of

seconds have passed.

If not supplied or 0, the message is sent asynchronously, and the function

returns immediately without waiting for a result.

launchParameters

Optional. A string of parameters to append to the name of the target

application when launching it, if the application is not already running.

If the target application is already running, this value is ignored.

Sends this message to the

target application.

Returns true if the message could be sent immediately, false if it could not be sent or was queued

for sending later.

If the target application is not running and the message contains a body, the messaging system

automatically launches the target application, passing in any supplied launch parameters. In this

case, the message is queued rather than sent immediately, and this method returns false. The

message is processed once the application is running.

Sending the message does not guarantee that the target actually receives it. You can request

notification of receipt by defining an onReceived

callback for this message object. (Note that this is

different from the static onReceive

method of the BridgeTalk class that handles unsolicited

messages.)

sendResult()

bridgeTalkObj.sendResult (result)

result

You can send data of any type as the result value. The messaging framework

creates a BridgeTalk message object

, and flattens this value into a string

which it stores in the

body of that message. See “Passing values between

applications” on page 176.

When processing an unsolicited message, the static

BridgeTalk onReceive method can return an

intermediate result to the sender by calling this method in the received message object. It invokes

the onResult

callback of the original message, passing a new message object containing the

specified

result value.

This allows you to send multiple responses to messages.

Returns true if the received message has an onResult

callback defined and the response message

can be sent, false otherwise.

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