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/*******************************************************************************
ηMatrix - a browser extension to black/white list requests.
Copyright (C) 2014-2019 The uMatrix/uBlock Origin authors
Copyright (C) 2019-2020 Alessio Vanni
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://libregit.spks.xyz/heckyel/ematrix
uMatrix Home: https://github.com/gorhill/uMatrix
*/
'use strict';
/******************************************************************************/
(function () {
vAPI.window = (function () {
let windowToIdMap = new Map();
let windowIdGenerator = 1;
let api = {
onOpenWindow: null,
onCloseWindow: null
};
// https://github.com/gorhill/uMatrix/issues/586 This is
// necessary hack because on SeaMonkey 2.40, for unknown
// reasons private windows do not have the attribute
// `windowtype` set to `navigator:browser`. As a fallback, the
// code here will also test whether the id attribute is
// `main-window`.
api.toBrowserWindow = function (win) {
let docElement = win && win.document
&& win.document.documentElement;
if (!docElement) {
return null;
}
if (vAPI.thunderbird) {
return docElement.getAttribute('windowtype') === 'mail:3pane'
? win
: null;
}
return docElement.getAttribute('windowtype') === 'navigator:browser'
|| docElement.getAttribute('id') === 'main-window'
? win
: null;
};
api.getWindows = function () {
return windowToIdMap.keys();
};
api.idFromWindow = function (win) {
return windowToIdMap.get(win) || 0;
};
api.getCurrentWindow = function () {
return this.toBrowserWindow(Services.wm.getMostRecentWindow(null));
};
let addWindow = function (win) {
if (!win || windowToIdMap.has(win)) {
return;
}
windowToIdMap.set(win, windowIdGenerator++);
if (typeof api.onOpenWindow === 'function') {
api.onOpenWindow(win);
}
};
let removeWindow = function (win) {
if (!win || windowToIdMap.delete(win) !== true) {
return;
}
if (typeof api.onCloseWindow === 'function') {
api.onCloseWindow(win);
}
};
// https://github.com/gorhill/uMatrix/issues/357
// Use nsIWindowMediator for being notified of opened/closed windows.
let listeners = {
onOpenWindow: function (aWindow) {
let win;
try {
win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (e) {
// Ignore
}
addWindow(win);
},
onCloseWindow: function (aWindow) {
let win;
try {
win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (e) {
// Ignore
}
removeWindow(win);
},
observe: function (aSubject, topic) {
let win;
try {
win = aSubject.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
} catch (e) {
// Ignore
}
if (!win) {
return;
}
switch (topic) {
case 'domwindowopened':
addWindow(win);
break;
case 'domwindowclosed':
removeWindow(win);
break;
default:
console.error('unknown observer topic');
break;
}
}
};
(function() {
let winumerator;
winumerator = Services.wm.getEnumerator(null);
while (winumerator.hasMoreElements()) {
let win = winumerator.getNext();
if (!win.closed) {
windowToIdMap.set(win, windowIdGenerator++);
}
}
winumerator = Services.ww.getWindowEnumerator();
while (winumerator.hasMoreElements()) {
let win = winumerator.getNext()
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindow);
if (!win.closed) {
windowToIdMap.set(win, windowIdGenerator++);
}
}
Services.wm.addListener(listeners);
Services.ww.registerNotification(listeners);
})();
vAPI.addCleanUpTask(function() {
Services.wm.removeListener(listeners);
Services.ww.unregisterNotification(listeners);
windowToIdMap.clear();
});
return api;
})();
})();
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