Make it possible to export password metadata in Edge (requires compli…

…cated steps but there doesn't seem to be another way)

chrome/data/platform.js

@@ -70,7 +70,7 @@ exports.close = () => window.close();
 // Work-around for https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/9550897/,
 // inline all stylesheets.
 
-if (window.navigator.userAgent.indexOf(" Edge/"))
+if (window.navigator.userAgent.indexOf(" Edge/") >= 0)
 {
   window.addEventListener("DOMContentLoaded", () =>
   {

data/allpasswords/allpasswords.html

@@ -25,6 +25,7 @@
       <div id="allpasswords-import-confirm" data-l10n-id="allpasswords-import-confirm"></div>
       <div id="allpasswords-import-success" data-l10n-id="allpasswords-import-success"></div>
       <div id="allpasswords-show-confirm" data-l10n-id="allpasswords-show-confirm"></div>
+      <div id="allpasswords-export-edge" data-l10n-id="allpasswords-export-edge"></div>
     </div>
 
     <!-- Cannot use <template> tag here, template contents are removed from document before l10n does its job -->

data/allpasswords/main.js

@@ -58,11 +58,23 @@ function exportData()
 {
   passwords.exportPasswordData().then(data =>
   {
-    let link = $("exportData");
-    let blob = new Blob([JSON.stringify(data)], {type: "application/json"});
-    link.href = URL.createObjectURL(blob);
-    link.download = "passwords-backup-" + new Date().toISOString().replace(/T.*/, "") + ".json";
-    link.click();
+    if (window.navigator.userAgent.indexOf(" Edge/") >= 0)
+    {
+      // Edge won't let extensions download blobs (https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/9551771/)
+      // and it would ignore the file name anyway (https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/6594876/).
+      // data: URIs don't work either (https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4282810/).
+      // Let the user copy the text manually, that's the only way.
+      if (confirm($("allpasswords-export-edge").textContent))
+        document.body.textContent = JSON.stringify(data);
+    }
+    else
+    {
+      let link = $("exportData");
+      let blob = new Blob([JSON.stringify(data)], {type: "application/json"});
+      link.href = URL.createObjectURL(blob);
+      link.download = "passwords-backup-" + new Date().toISOString().replace(/T.*/, "") + ".json";
+      link.click();
+    }
   }).catch(showError);
 }
 

locale/en-US.properties

@@ -108,6 +108,7 @@ allpasswords-import-confirm = Importing passwords will only produce meaningful r
 allpasswords-import-success = Passwords data has been imported.
 allpasswords-show = Show passwords
 allpasswords-show-confirm = This will display all your passwords on screen, please only proceed if nobody can watch over your shoulder. This action might take some time to complete.
+allpasswords-export-edge = Bugs in Microsoft Edge currently prevent extensions from offering files for download. You will need to copy the text manually and paste it into a text editor such as Notepad.
 
 # simple-prefs
 autolock_title = Enable auto-lock