Init from Manwell

background.js

@@ -0,0 +1,72 @@
+let tabs = {};
+function createTab(id){
+	return tabs[id] = {
+		top: "",
+		scriptsIndex: {},
+		scripts: []
+	};
+}
+
+chrome.browserAction.setBadgeBackgroundColor({color:"#303030"});
+chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
+	let rTabID = request.tabID;
+	let action = request.action;
+	let value = request.value;
+	
+	if(sender.tab){ // Messages from tabs
+		let tabID = sender.tab.id;
+		if(!tabs[tabID]) createTab(tabID)
+		let tab = tabs[tabID];
+	
+		switch(action){
+			case "add-files": {
+				value.forEach(info => {
+					if(!tab.scriptsIndex[info.id]){
+						tab.scriptsIndex[info.id] = info;
+						tab.scripts.push(info);
+						if(info.enabled) tab.badge++;
+						
+						let file = new File(info.id);
+						file.onChange = function(newInfo){
+							for(let index in newInfo){
+								info[index] = newInfo[index];
+							}
+						}
+					}
+				});
+				
+				if(tab.scripts.length>0)
+					chrome.browserAction.setBadgeText({
+						tabId: tabID,
+						text: String(tab.scripts.length)
+					});
+				break;
+			}
+			case "set-url": {
+				tab = createTab(tabID);
+				tab.top = value;
+				break;
+			}
+		}
+	} else { // Messages from anywhere else
+		let tab;
+		if(rTabID){
+			tab = tabs[rTabID];
+			if(!tab) return;
+		}
+		
+		switch(action){
+			case "get-files": {
+				sendResponse(tab.scripts);
+				break;
+			}
+			case "get-url": {
+				sendResponse(tab.top);
+				break;
+			}
+		}
+	}
+});
+chrome.tabs.onRemoved.addListener((tabID, removeInfo) => {
+	delete tabs[tabID];
+});