1 files changed, 92 insertions, 92 deletions

diff --git a/js/vapi-window.js b/js/vapi-window.js
index 1619ead..c512135 100644
--- a/js/vapi-window.js
+++ b/js/vapi-window.js
@@ -27,157 +27,157 @@
 
 (function () {
     vAPI.window = (function () {
-	let windowToIdMap = new Map();
-	let windowIdGenerator = 1;
-	let api = {
+        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) {
+        };
+
+        // 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;
-	    
+                && win.document.documentElement;
+
             if (!docElement) {
-		return null;
+                return null;
             }
             if (vAPI.thunderbird) {
-		return docElement.getAttribute('windowtype') === 'mail:3pane'
-		    ? win
-		    : null;
+                return docElement.getAttribute('windowtype') === 'mail:3pane'
+                    ? win
+                    : null;
             }
-	    
+
             return docElement.getAttribute('windowtype') === 'navigator:browser'
-		|| docElement.getAttribute('id') === 'main-window'
-		? win
-		: null;
-	};
+                || docElement.getAttribute('id') === 'main-window'
+                ? win
+                : null;
+        };
 
-	api.getWindows = function () {
+        api.getWindows = function () {
             return windowToIdMap.keys();
-	};
+        };
 
-	api.idFromWindow = function (win) {
+        api.idFromWindow = function (win) {
             return windowToIdMap.get(win) || 0;
-	};
+        };
 
-	api.getCurrentWindow = function () {
+        api.getCurrentWindow = function () {
             return this.toBrowserWindow(Services.wm.getMostRecentWindow(null));
-	};
+        };
 
-	let addWindow = function (win) {
+        let addWindow = function (win) {
             if (!win || windowToIdMap.has(win)) {
-		return;
+                return;
             }
-	    
+
             windowToIdMap.set(win, windowIdGenerator++);
-	    
+
             if (typeof api.onOpenWindow === 'function') {
-		api.onOpenWindow(win);
+                api.onOpenWindow(win);
             }
-	};
+        };
 
-	let removeWindow = function (win) {
+        let removeWindow = function (win) {
             if (!win || windowToIdMap.delete(win) !== true) {
-		return;
+                return;
             }
-	    
+
             if (typeof api.onCloseWindow === 'function') {
-		api.onCloseWindow(win);
+                api.onCloseWindow(win);
             }
-	};
+        };
 
-	// https://github.com/gorhill/uMatrix/issues/357
-	// Use nsIWindowMediator for being notified of opened/closed windows.
-	let listeners = {
+        // https://github.com/gorhill/uMatrix/issues/357
+        // Use nsIWindowMediator for being notified of opened/closed windows.
+        let listeners = {
             onOpenWindow: function (aWindow) {
-		let win;
-		try {
+                let win;
+                try {
                     win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
                         .getInterface(Ci.nsIDOMWindow);
-		} catch (e) {
-		    // Ignore
-		}
-		
-		addWindow(win);
+                } catch (e) {
+                    // Ignore
+                }
+
+                addWindow(win);
             },
             onCloseWindow: function (aWindow) {
-		let win;
-		try {
+                let win;
+                try {
                     win = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
                         .getInterface(Ci.nsIDOMWindow);
-		} catch (e) {
-		    // Ignore
-		}
-		
-		removeWindow(win);
+                } catch (e) {
+                    // Ignore
+                }
+
+                removeWindow(win);
             },
             observe: function (aSubject, topic) {
-		let win;
-		try {
+                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;
-		}
+                } 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() {
+        (function() {
             let winumerator;
 
             winumerator = Services.wm.getEnumerator(null);
             while (winumerator.hasMoreElements()) {
-		let win = winumerator.getNext();
-		
-		if (!win.closed) {
+                let win = winumerator.getNext();
+
+                if (!win.closed) {
                     windowToIdMap.set(win, windowIdGenerator++);
-		}
+                }
             }
 
             winumerator = Services.ww.getWindowEnumerator();
             while (winumerator.hasMoreElements()) {
-		let win = winumerator.getNext()
+                let win = winumerator.getNext()
                     .QueryInterface(Ci.nsIInterfaceRequestor)
                     .getInterface(Ci.nsIDOMWindow);
-		
-		if (!win.closed) {
+
+                if (!win.closed) {
                     windowToIdMap.set(win, windowIdGenerator++);
-		}
+                }
             }
 
             Services.wm.addListener(listeners);
             Services.ww.registerNotification(listeners);
-	})();
+        })();
 
-	vAPI.addCleanUpTask(function() {
+        vAPI.addCleanUpTask(function() {
             Services.wm.removeListener(listeners);
             Services.ww.unregisterNotification(listeners);
             windowToIdMap.clear();
-	});
+        });
 
-	return api;
+        return api;
     })();
 })();