Acquired Opera AdBlock code

files/background.js

Index: files/background.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/files/background.js
@@ -0,0 +1,112 @@
+/*opera.extension.windows.addEventListener( "focus", function(){
+	opera.postError('Focus: ' + opera.extension.tabs.getSelected().url);
+});
+opera.extension.windows.addEventListener( "change", function(){
+	opera.postError('Change: ' + opera.extension.tabs.getSelected());
+});
+opera.extension.windows.addEventListener( "create", function(){
+	opera.postError('Create: ' + opera.extension.tabs.getSelected());
+});
+opera.extension.windows.addEventListener( "update", function(){
+	opera.postError('Update: ' + opera.extension.tabs.getSelected());
+});*/
+
+opera.extension.onmessage = function (event) {
+	button.update();
+	//opera.postError('BACKGROUND: got a ' + event.data.request + ' request');
+	switch(event.data.request) {
+		case 'css':
+			//opera.postError('BACKGROUND: got reply from ' + event.data.url);
+			if(whitelist.check(event.data.url))
+				event.source.postMessage({request: event.data.request, reply: css.personal().join("\n"), id: 'OAB_Perso'});
+			else
+				event.source.postMessage({request: event.data.request, reply: '', id: 'OAB_Perso'});
+			
+			for(key in sources.css) { //Sends them one by one to avoid contamination in cases where one is corrupted
+				if(css.status(key) && whitelist.check(event.data.url))
+					event.source.postMessage({request: event.data.request, reply: css.get(key).join("\n"), id: 'OAB_' + key});
+				else
+					event.source.postMessage({request: event.data.request, reply: '', id: 'OAB_' + key});
+			}
+			break;
+		case 'ping':
+			//opera.postError('BACKGROUND: ping received');
+			opera.extension.broadcastMessage({request: 'ping', type: event.data.type});
+			break;
+		case 'list':
+			if(event.data.enable)
+				lists.enable(event.data.key);
+			else
+				lists.disable(event.data.key);
+			break;
+		case 'whitelist': //request: whitelist // type: add | remove // rule: RULE
+			if(event.data.type == 'add')
+				opera.extension.urlfilter.allow.add(event.data.rule);
+			else if(event.data.type == 'remove')
+				opera.extension.urlfilter.allow.remove(event.data.rule);
+			break;
+		/*case 'button':
+			if(event.data.enable)
+				button.enable();
+			else
+				button.disable();*/
+	}
+}
+
+if(window.widget.version != preferences.string('version')) {
+	if(!preferences.exist('version'))  { // New install
+		lists.enable('easy');
+	}
+	else { //Update from previous versions
+		if(preferences.float('version')  < 0.60) { //Updating from versions before Next, only enabled lists are ported
+			var enabledLists = new Array();
+			for(key in sources.all()) { //Notes all enabled lists
+				if(preferences.bool(key))
+					enabledLists.push(key);
+			}
+			var enabledCss = new Array();
+			for(key in sources.css) { //Notes all enabled lists
+				if(preferences.bool(key))
+					enabledCss.push(key);
+			}
+			var whitelist = lists.whitelist.get();
+			
+			widget.preferences.clear(); //Removes all old preferences
+			
+			for(i in enabledLists) { //Enable all previously enabled lists
+				lists.enable(enabledLists[i]);
+			}
+			for(i in enabledCss) { //Enable all previously enabled lists
+				css.enable(enabledCss[i], false);
+			}
+			lists.whitelist.set(whitelist);
+		}
+		else if(preferences.float('version')  <= 0.71) { //Updating from versions before lists merge and change
+			widget.preferences.clear(); //Removes all old preferences
+			// As no stable version exist between 0.52 and 0.71, the settings are not ported and simply removed from the extension
+		}
+		
+	}
+	//Updates the version
+	preferences.string('version', window.widget.version);
+}
+
+function updateAll() {
+	//opera.postError('updateAll() called');
+	for(key in sources.css) {
+		if(css.status(key) && getTime() - css.time(key) > preferences.int('interval')) { //If the list is enabled
+			css.update(key);
+			//opera.postError(key + ' updated');
+		}
+	}
+	for(key in sources.all()) {
+		if(lists.status(key) && getTime() - lists.time(key) > preferences.int('interval')) { //If the list is enabled
+			lists.update(key);
+			//opera.postError(key + ' updated');
+		}
+	}
+	window.setTimeout('updateAll()', preferences.int('interval') / 12); //Verifies required updates every 1/12 of the update interval
+}
+
+lists.setup(); //Enables all lists
+updateAll(); //Sets update intervals