added article on window open features

Author: binfalse

_posts/2020-03-05-testing-window-open-features.md

@@ -0,0 +1,110 @@
+---
+title: "Window Open Features: Restrict and Test"
+layout: post
+published: true
+date: 2020-03-05 08:33:11 +0100
+categories:
+  - administration
+  - config
+  - howto
+  - javascript
+  - html
+  - programming
+  - software
+  - website
+  - web
+tags:
+  - javascript
+  - mozilla 
+  - demo
+  - config
+  - firefox
+  - programming
+  - trick
+  - userinteraction
+  - web
+---
+
+Are you also annoyed by websites that open popups and external windows without your menu bar? And without scrollbars and no close button and ... and .. and..
+
+## Restrict Window Open Features
+
+Don't worry, you can disable these "features"!
+In Firefox, open [about:config](about:config) and search for `dom.disable_window_open_feature` (see [@azure's pleroma post](https://pleroma.site/notice/9sfjyFYxWIdEMexkYa)).
+Full documentation on these settings are available through [MozillaZine](http://kb.mozillazine.org/Prevent_websites_from_disabling_new_window_features).
+These preferences can also be [set (and locked) system wide](kb.mozillazine.org/Locking_preferences), which may be useful for multi-user and multi-system environments
+
+
+## Test Window Open Features
+
+[Mozilla's Developer portal has a documentation on possible Window Open Features](https://developer.mozilla.org/en-US/docs/Web/API/Window/open#Window_features).
+There you can learn which features are available, what they mean, and how to set them.
+
+Testing is then pretty easy.
+The following checkboxes allow for enabling/disabling most useful window features.
+If a box is ticked, the corresponding feature will be set; if it's unticked the feature will be turned off.
+You can then click the link below to test how your browser behaves when opening this blog using the chosen set of features.
+
+
+
+<ul id="settings">
+</ul>
+
+<script type="text/javascript">
+    var ul = document.getElementById("settings");
+    var windowRef = null;
+    var settings = {
+        "menubar": "Menu Bar",
+        "toolbar": "Navigation Toolbar (Back, Forward, Reload, Stop...)",
+        "scrollbars": "Scroll Bars",
+        "resizable": "Resizable",
+        "status": "Status Bar",
+        "personalbar": "Personal Toolbar / Bookmarks / Site Navigation Ba",
+        "location": "Location Bar",
+        "fullscreen": "Open in Fullscreen (not implemented in many browsers)",
+    }
+
+    for (const [key, value] of Object.entries(settings)) {
+        var input = document.createElement("input");
+        input.type = "checkbox";
+        input.name = key;
+        input.value = key;
+        input.id = key;
+    
+        var label = document.createElement('label')
+        label.htmlFor = key;
+        label.appendChild(document.createTextNode("\u00A0" + value));
+    
+        var li = document.createElement("li");
+        li.appendChild(input);
+        li.appendChild(label);
+    
+        ul.appendChild(li);
+    }
+    
+    function openPopup () {
+        var winFeatures = ""
+    
+        for (const [key, value] of Object.entries(settings)) {
+            var input = document.getElementById(key);
+            if (input.checked)
+                winFeatures += key + "=yes,"
+            else
+                winFeatures += key + "=no,"
+        }
+    
+        if(windowRef == null || windowRef.closed) {
+            windowRef = window.open("https://binfalse.de/?test=window_open_feature", "Popup", winFeatures);
+        } else {
+            alert ("Popup already opened!? Please close it to test again.");
+        }
+    }
+</script>
+
+**TEST NOW:** <a href="https://binfalse.de/?test=window_open_feature" target="Popup" onclick="openPopup(); return false;">Open binfalse.de using above settings.</a>
+
+The test should be browser independent, you just need to have Javascript enabled.
+However, let me know if it doesn't work for you!
+
+To see how I implemented the test tool take a look into the source code of this page, or [check the script on GitHub](https://github.com/binfalse/binfalse.de/blob/master/_posts/2020-03-05-testing-window-open-features.md).
+Remember? This blog is all open source :)