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1 files changed, 161 insertions, 0 deletions

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+console.debug("main_background.js");
+
+/**
+*	
+*	Sets global variable "webex" to either "chrome" or "browser" for
+*	use on Chrome or a Firefox variant.
+*
+*	Change this to support a new browser that isn't Chrome or Firefox,
+*	given that it supports webExtensions.
+*
+*	(Use the variable "webex" for all API calls after calling this)
+*/
+var webex;
+function set_webex(){
+	if(typeof(browser) == "undefined"){
+		webex = chrome;
+	} else{
+		webex = browser;
+	}
+}
+
+/*
+*
+* Called when something changes the persistent data of the add-on.
+*
+* The only things that should need to change this data are:
+* a) The "Whitelist this page" button
+* b) The options screen
+*
+* When the actual blocking is implemented, this will need to comminicate
+* with its code to update accordingly
+* 
+*/
+function options_listener(changes, area){
+	console.log("Items updated in area" + area +": ");
+
+	var changedItems = Object.keys(changes);
+	var changed_items = "";
+	for (var item of changedItems) {
+		changed_items += item + ",";
+	}
+	console.log(changed_items);
+
+}
+/**
+*	Executes the "Display this report in new tab" function
+*	by opening a new tab with whatever HTML is in the popup
+*	at the moment.
+*/
+function open_popup_tab(){
+	function gotPopup(popupURL){
+		var creating = webex.tabs.create({"url":popupURL});
+	}
+
+	var gettingPopup = webex.browserAction.getPopup({},gotPopup);
+}
+
+/**
+*
+*	This is what you call when a page gets changed to update the info box.
+*
+*	Sends a message to the content script that updates the popup for a page.
+*
+*
+*	var example_blocked_info = {
+*		"accepted": [["REASON 1","SOURCE 1"],["REASON 2","SOURCE 2"]],
+*		"blocked": [["REASON 1","SOURCE 1"],["REASON 2","SOURCE 2"]],
+*		"url": "example.com"
+*	}
+*
+*/
+
+var active_connections = {};
+var unused_data = {};
+function update_popup(tab_id,blocked_info){
+	// this will happen almost every time (browser action not opened before javascript has been filtered)
+	// store the blocked info until it is opened and needed
+	if(active_connections[tab_id] === undefined){
+		console.log("[TABID:"+tab_id+"]"+"Storing blocked_info for when the browser action is opened.");
+		unused_data[tab_id] = blocked_info; 
+	} else{
+		console.log("[TABID:"+tab_id+"]"+"Sending blocked_info directly to browser action");
+		active_connections[tab_id].postMessage({"show_info":blocked_info});
+		delete active_connections[tab_id];
+	}
+}
+/**
+*
+*	This is the callback where the content scripts of the browser action will contact the background script.
+*
+*/
+var portFromCS;
+function connected(p) {
+	console.log(p);
+	p.onMessage.addListener(function(m) {
+		function logTabs(tabs) {
+			for(let tab of tabs) {
+				var tab_id = tab["id"]
+				console.log(tab_id)
+				if(unused_data[tab_id] !== undefined){
+					// If we have some data stored here for this tabID, send it and then delete our copy 	
+					console.log("[TABID:"+tab_id+"]"+"Sending stored data associated with browser action");								
+					p.postMessage({"show_info":unused_data[tab_id]});
+				} else{
+					// create a new entry
+					unused_data[tab_id] = {"url":tab["url"],"blocked":"","accepted":""};
+					p.postMessage({"show_info":unused_data[tab_id]});							
+					console.log("[TABID:"+tab_id+"]"+"No data found, creating a new entry for this window.");	
+				}
+			}
+		}
+		var querying = webex.tabs.query({active: true,currentWindow: true},logTabs);
+		
+	});
+}
+
+/**
+*	The callback for tab closings.
+*
+*	Delete the info we are storing about this tab if there is any.
+*
+*/
+function delete_removed_tab_info(tab_id, remove_info){
+	console.log("[TABID:"+tab_id+"]"+"Deleting stored info about closed tab");
+	if(unused_data[tab_id] !== undefined){
+		delete unused_data[tab_id];
+	}
+	if(active_connections[tab_id] !== undefined){
+		delete active_connections[tab_id];
+	}
+}
+
+
+/**
+*	Initializes various add-on functions
+*	only meant to be called once when the script starts
+*/
+function init_addon(){
+	set_webex();
+	webex.runtime.onConnect.addListener(connected);
+	webex.storage.onChanged.addListener(options_listener);
+	webex.tabs.onRemoved.addListener(delete_removed_tab_info);
+}
+
+
+init_addon();
+
+// some misc. debugging:
+var example_input = {
+	"accepted": [["FILENAME 1","REASON 1"],["FILENAME 2","REASON 2"]],
+	"blocked": [["FILENAME 1","REASON 1"],["FILENAME 2","REASON 2"]],
+	"url":"example.com"
+}
+example_input["accepted"] = [];
+example_input["blocked"] = [];
+
+//open_popup_tab();
+
+
+
+