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eliminate overhead of creating two funcs/closure for each port connection

pull/2/head
Raymond Hill 10 years ago
committed by gorhill
parent
commit
789bfe09f6
  1. 78
      meta/crx/vapi-background.js

78
meta/crx/vapi-background.js

@ -219,6 +219,7 @@ vAPI.messaging = {
ports: {},
listeners: {},
defaultHandler: null,
NOOPFUNC: function(){},
UNHANDLED: 'vAPI.messaging.notHandled'
};
@ -230,49 +231,50 @@ vAPI.messaging.listen = function(listenerName, callback) {
/******************************************************************************/
vAPI.messaging.onConnect = function(port) {
var onMessage = function(request) {
var callback = function(response) {
if ( vAPI.lastError() || response === undefined ) {
return;
}
if ( request.requestId ) {
port.postMessage({
requestId: request.requestId,
portName: request.portName,
msg: response
});
}
vAPI.messaging.onPortMessage = function(request, port) {
var callback = vAPI.messaging.NOOPFUNC;
if ( request.requestId !== undefined ) {
callback = function(response) {
port.postMessage({
requestId: request.requestId,
portName: request.portName,
msg: response !== undefined ? response : null
});
};
}
// Specific handler
var r;
var listener = vAPI.messaging.listeners[request.portName];
if ( typeof listener === 'function' ) {
r = listener(request.msg, port.sender, callback);
}
if ( r !== vAPI.messaging.UNHANDLED ) {
return;
}
// Specific handler
var r;
var listener = vAPI.messaging.listeners[request.portName];
if ( typeof listener === 'function' ) {
r = listener(request.msg, port.sender, callback);
}
if ( r !== vAPI.messaging.UNHANDLED ) {
return;
}
// Default handler
r = vAPI.messaging.defaultHandler(request.msg, port.sender, callback);
if ( r !== vAPI.messaging.UNHANDLED ) {
return;
}
// Default handler
r = vAPI.messaging.defaultHandler(request.msg, port.sender, callback);
if ( r !== vAPI.messaging.UNHANDLED ) {
return;
}
console.error('µBlock> messaging > unknown request: %o', request);
};
console.error('µBlock> messaging > unknown request: %o', request);
};
var onDisconnect = function(port) {
port.onDisconnect.removeListener(onDisconnect);
port.onMessage.removeListener(onMessage);
delete vAPI.messaging.ports[port.name];
};
/******************************************************************************/
port.onDisconnect.addListener(onDisconnect);
port.onMessage.addListener(onMessage);
vAPI.messaging.onDisconnect = function(port) {
port.onDisconnect.removeListener(vAPI.messaging.onDisconnect);
port.onMessage.removeListener(vAPI.messaging.onPortMessage);
delete vAPI.messaging.ports[port.name];
};
/******************************************************************************/
vAPI.messaging.onConnect = function(port) {
port.onDisconnect.addListener(vAPI.messaging.onDisconnect);
port.onMessage.addListener(vAPI.messaging.onPortMessage);
vAPI.messaging.ports[port.name] = port;
};
@ -286,7 +288,7 @@ vAPI.messaging.setup = function(defaultHandler) {
if ( typeof defaultHandler !== 'function' ) {
defaultHandler = function(){ return null; };
};
}
this.defaultHandler = defaultHandler;
chrome.runtime.onConnect.addListener(this.onConnect);

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