1 files changed, 113 insertions, 0 deletions
diff --git a/toolkit/components/DefaultCLH.sys.mjs b/toolkit/components/DefaultCLH.sys.mjs
new file mode 100644
index 0000000000..2603c5a50c
--- /dev/null
+++ b/toolkit/components/DefaultCLH.sys.mjs
@@ -0,0 +1,113 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const nsICommandLineHandler = Ci.nsICommandLineHandler;
+const nsIPrefBranch = Ci.nsIPrefBranch;
+const nsIWindowWatcher = Ci.nsIWindowWatcher;
+const nsIProperties = Ci.nsIProperties;
+const nsIFile = Ci.nsIFile;
+const nsISimpleEnumerator = Ci.nsISimpleEnumerator;
+
+/**
+ * This file provides a generic default command-line handler.
+ *
+ * It opens the chrome window specified by the pref "toolkit.defaultChromeURI"
+ * with the flags specified by the pref "toolkit.defaultChromeFeatures"
+ * or "chrome,dialog=no,all" is it is not available.
+ * The arguments passed to the window are the nsICommandLine instance.
+ *
+ * It doesn't do anything if the pref "toolkit.defaultChromeURI" is unset.
+ */
+
+function getDirectoryService() {
+  return Cc["@mozilla.org/file/directory_service;1"].getService(nsIProperties);
+}
+
+export function nsDefaultCLH() {}
+nsDefaultCLH.prototype = {
+  classID: Components.ID("{6ebc941a-f2ff-4d56-b3b6-f7d0b9d73344}"),
+
+  /* nsISupports */
+
+  QueryInterface: ChromeUtils.generateQI([nsICommandLineHandler]),
+
+  /* nsICommandLineHandler */
+
+  handle: function clh_handle(cmdLine) {
+    var printDir;
+    while ((printDir = cmdLine.handleFlagWithParam("print-xpcom-dir", false))) {
+      var out = 'print-xpcom-dir("' + printDir + '"): ';
+      try {
+        out += getDirectoryService().get(printDir, nsIFile).path;
+      } catch (e) {
+        out += "<Not Provided>";
+      }
+
+      dump(out + "\n");
+      console.error(out);
+    }
+
+    var printDirList;
+    while (
+      (printDirList = cmdLine.handleFlagWithParam("print-xpcom-dirlist", false))
+    ) {
+      out = 'print-xpcom-dirlist("' + printDirList + '"): ';
+      try {
+        for (let file of getDirectoryService().get(
+          printDirList,
+          nsISimpleEnumerator
+        )) {
+          out += file.path + ";";
+        }
+      } catch (e) {
+        out += "<Not Provided>";
+      }
+
+      dump(out + "\n");
+      console.error(out);
+    }
+
+    if (cmdLine.handleFlag("silent", false)) {
+      cmdLine.preventDefault = true;
+    }
+
+    if (cmdLine.preventDefault) {
+      return;
+    }
+
+    var prefs =
+      Cc["@mozilla.org/preferences-service;1"].getService(nsIPrefBranch);
+
+    try {
+      var singletonWindowType = prefs.getCharPref(
+        "toolkit.singletonWindowType"
+      );
+
+      var win = Services.wm.getMostRecentWindow(singletonWindowType);
+      if (win) {
+        win.focus();
+        cmdLine.preventDefault = true;
+        return;
+      }
+    } catch (e) {}
+
+    // if the pref is missing, ignore the exception
+    try {
+      var chromeURI = prefs.getCharPref("toolkit.defaultChromeURI");
+
+      var flags = prefs.getCharPref(
+        "toolkit.defaultChromeFeatures",
+        "chrome,dialog=no,all"
+      );
+
+      var wwatch =
+        Cc["@mozilla.org/embedcomp/window-watcher;1"].getService(
+          nsIWindowWatcher
+        );
+      wwatch.openWindow(null, chromeURI, "_blank", flags, cmdLine);
+    } catch (e) {}
+  },
+
+  helpInfo: "",
+};