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give specific message handlers priority over default one

pull/2/head
Raymond Hill 10 years ago
committed by gorhill
parent
aa1f793963
commit
0a0c011960
1 changed files with 198 additions and 170 deletions
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  1. 168
      meta/crx/vapi-background.js

168
meta/crx/vapi-background.js
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@ -19,9 +19,9 @@
Home: https://github.com/gorhill/uBlock
*/
// For background page
/* global self */
/* global SafariBrowserTab, Services, XPCOMUtils */
// For background page
/******************************************************************************/
@ -44,8 +44,11 @@ vAPI.storage = chrome.storage.local;
/******************************************************************************/
vAPI.tabs = {
registerListeners: function() {
vAPI.tabs = {};
/******************************************************************************/
vAPI.tabs.registerListeners = function() {
if ( typeof this.onNavigation === 'function' ) {
chrome.webNavigation.onCommitted.addListener(this.onNavigation);
}
@ -61,41 +64,41 @@ vAPI.tabs = {
if ( typeof this.onPopup === 'function' ) {
chrome.webNavigation.onCreatedNavigationTarget.addListener(this.onPopup);
}
},
};
get: function(tabId, callback) {
if (tabId === null) {
chrome.tabs.query(
{
active: true,
currentWindow: true
},
function(tabs) {
callback(tabs[0]);
}
);
}
else {
/******************************************************************************/
vAPI.tabs.get = function(tabId, callback) {
if ( tabId !== null ) {
chrome.tabs.get(tabId, callback);
return;
}
},
/*open: function(details) {
// to keep incognito context?
chrome.windows.getCurrent(function(win) {
details.windowId = win.windowId;
chrome.tabs.create(details);
});
},*/
open: function(details) {
if (!details.url) {
var onTabReceived = function(tabs) {
callback(tabs[0]);
};
chrome.tabs.query({ active: true, currentWindow: true }, onTabReceived);
};
/******************************************************************************/
// properties of the details object:
// url: 'URL', // the address that will be opened
// tabId: 1, // the tab is used if set, instead of creating a new one
// index: -1, // undefined: end of the list, -1: following tab, or after index
// active: false, // opens the tab in background - true and undefined: foreground
// select: true // if a tab is already opened with that url, then select it instead of opening a new one
vAPI.tabs.open = function(details) {
var url = details.url;
if ( typeof url !== 'string' || url === '' ) {
return null;
}
// extension pages
else if (!details.url.match(/^\w{2,20}:/)) {
details.url = vAPI.getURL(details.url);
if ( /^[\w-]{2,}:/.test(url) !== true ) {
url = vAPI.getURL(url);
}
// dealing with Chrome's asynhronous API
// dealing with Chrome's asynchronous API
var wrapper = function() {
if ( details.active === undefined ) {
details.active = true;
@ -117,8 +120,7 @@ vAPI.tabs = {
chrome.tabs.move(tab.id, {index: details.index});
}
});
}
else {
} else {
if ( details.index !== undefined ) {
_details.index = details.index;
}
@ -131,8 +133,7 @@ vAPI.tabs = {
vAPI.tabs.get(null, function(tab) {
if ( tab ) {
details.index = tab.index + 1;
}
else {
} else {
delete details.index;
}
@ -145,21 +146,18 @@ vAPI.tabs = {
};
if ( details.select ) {
// note that currentWindow may be even the window of Developer Tools
// so, test with setTimeout...
chrome.tabs.query({ currentWindow: true }, function(tabs) {
var url = details.url.replace(rgxHash, '');
// this is questionable
var rgxHash = /#.*/;
tabs = tabs.some(function(tab) {
var selected = tabs.some(function(tab) {
if ( tab.url.replace(rgxHash, '') === url ) {
chrome.tabs.update(tab.id, { active: true });
return true;
}
});
if (!tabs) {
if ( selected.length === 0 ) {
wrapper();
}
});
@ -167,20 +165,30 @@ vAPI.tabs = {
else {
wrapper();
}
},
close: chrome.tabs.remove.bind(chrome.tabs),
injectScript: function(tabId, details, callback) {
if (!callback) {
};
/******************************************************************************/
vAPI.tabs.remove = function(tabId) {
var onTabRemoved = function() {
if ( vAPI.lastError() ) {
}
};
chrome.tabs.remove(tabId, onTabRemoved);
};
/******************************************************************************/
vAPI.tabs.injectScript = function(tabId, details, callback) {
if ( typeof callback !== 'function' ) {
callback = function(){};
}
if ( tabId ) {
chrome.tabs.executeScript(tabId, details, callback);
}
else {
} else {
chrome.tabs.executeScript(details, callback);
}
}
};
/******************************************************************************/
@ -197,9 +205,7 @@ vAPI.setIcon = function(tabId, img, badge) {
if ( vAPI.lastError() ) {
return;
}
chrome.browserAction.setBadgeText({ tabId: tabId, text: badge });
if ( badge !== '' ) {
chrome.browserAction.setBadgeBackgroundColor({ tabId: tabId, color: '#666' });
}
@ -212,18 +218,19 @@ vAPI.setIcon = function(tabId, img, badge) {
vAPI.messaging = {
ports: {},
listeners: {},
connector: null,
defaultHandler: null,
UNHANDLED: 'vAPI.messaging.notHandled'
};
listen: function(listenerName, callback) {
/******************************************************************************/
vAPI.messaging.listen = function(listenerName, callback) {
this.listeners[listenerName] = callback;
},
};
setup: function(connector) {
if ( this.connector ) {
return;
}
/******************************************************************************/
this.connector = function(port) {
vAPI.messaging.onConnect = function(port) {
var onMessage = function(request) {
var callback = function(response) {
if ( vAPI.lastError() || response === undefined ) {
@ -239,19 +246,23 @@ vAPI.messaging = {
}
};
// 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
var listener = connector(request.msg, port.sender, callback);
if ( listener !== null ) {
r = vAPI.messaging.defaultHandler(request.msg, port.sender, callback);
if ( r !== vAPI.messaging.UNHANDLED ) {
return;
}
// Specific handler
listener = vAPI.messaging.listeners[request.portName];
if ( typeof listener === 'function' ) {
listener(request.msg, port.sender, callback);
} else {
console.error('µBlock> messaging > unknown request: %o', request);
}
};
var onDisconnect = function(port) {
@ -265,18 +276,35 @@ vAPI.messaging = {
vAPI.messaging.ports[port.name] = port;
};
chrome.runtime.onConnect.addListener(this.connector);
},
/******************************************************************************/
vAPI.messaging.setup = function(defaultHandler) {
// Already setup?
if ( this.defaultHandler !== null ) {
return;
}
if ( typeof defaultHandler !== 'function' ) {
defaultHandler = function(){ return null; };
};
this.defaultHandler = defaultHandler;
chrome.runtime.onConnect.addListener(this.onConnect);
};
/******************************************************************************/
broadcast: function(message) {
message = {
vAPI.messaging.broadcast = function(message) {
var messageWrapper = {
broadcast: true,
msg: message
};
for ( var portName in this.ports ) {
this.ports[portName].postMessage(message);
if ( this.ports.hasOwnProperty(portName) === false ) {
continue;
}
this.ports[portName].postMessage(messageWrapper);
}
};

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