"use strict";

// This file keeps track of incognito sessions, and clears any caches after

// an entire incognito session is closed (i.e. all incognito windows are closed).

let incognito_session_exists = false;

/**

* Detect if an incognito session is created, so we can clear caches when it's destroyed.

*

* @param window: A standard Window object.

*/

function detect_incognito_creation(window) {

if (window.incognito === true) {

incognito_session_exists = true;

}

}

/**

* Clear any caches we have.

* Called if an incognito session is destroyed.

*/

function destroy_caches() {

log(DBUG, "Destroying caches.");

all_rules.cookieHostCache.clear();

all_rules.ruleCache.clear();

}

/**

* Check if any incognito window still exists. If not, destroy caches.

* @param arrayOfWindows: A array of all open Window objects.

*/

function check_for_incognito_session(arrayOfWindows) {

for (let window of arrayOfWindows) {

if (window.incognito === true) {

// An incognito window still exists, so don't destroy caches yet.

return;

}

}

// All incognito windows have been closed.

incognito_session_exists = false;

destroy_caches();

}

/**

* If a window is destroyed, and an incognito session existed, see if it still does.

*

* @param windowId: Ignored.

*/

function detect_incognito_destruction(windowId) {

if (incognito_session_exists) {

// Are any current windows incognito?

chrome.windows.getAll(check_for_incognito_session);

}

}

// Listen to window creation, so we can detect if an incognito window is created

chrome.windows.onCreated.addListener(detect_incognito_creation);

// Listen to window destruction, so we can clear caches if all incognito windows are destroyed

chrome.windows.onRemoved.addListener(detect_incognito_destruction);