From f543892e44771a2798d8ab0afe0d9bae8db06c3f Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Wed, 2 Jan 2019 17:15:29 +0100
Subject: Use getElementBoundingRect and element.ownerGlobal in
 FormSubmitObserver

---
 .../palemoon/modules/FormSubmitObserver.jsm        | 46 +++++++---------------
 1 file changed, 15 insertions(+), 31 deletions(-)

diff --git a/application/palemoon/modules/FormSubmitObserver.jsm b/application/palemoon/modules/FormSubmitObserver.jsm
index e4d3e765e..6b2ea3c84 100644
--- a/application/palemoon/modules/FormSubmitObserver.jsm
+++ b/application/palemoon/modules/FormSubmitObserver.jsm
@@ -42,10 +42,10 @@ FormSubmitObserver.prototype =
   {
     this._content = aWindow;
     this._tab = aTabChildGlobal;
-    this._mm = 
-      this._content.QueryInterface(Ci.nsIInterfaceRequestor)
-                   .getInterface(Ci.nsIDocShell)
-                   .sameTypeRootTreeItem
+    this._mm = 
+      this._content.QueryInterface(Ci.nsIInterfaceRequestor)
+                   .getInterface(Ci.nsIDocShell)
+                   .sameTypeRootTreeItem
                    .QueryInterface(Ci.nsIDocShell)
                    .QueryInterface(Ci.nsIInterfaceRequestor)
                    .getInterface(Ci.nsIContentFrameMessageManager);
@@ -104,13 +104,13 @@ FormSubmitObserver.prototype =
       return;
     }
     
-    // Insure that this is the FormSubmitObserver associated with the form
+    // Ensure that this is the FormSubmitObserver associated with the
     // element / window this notification is about.
-    if (this._content != aFormElement.ownerDocument.defaultView.top.document.defaultView) {
+    let element = aInvalidElements.queryElementAt(0, Ci.nsISupports);
+    if (this._content != element.ownerGlobal.top.document.defaultView) {
       return;
     }
 
-    let element = aInvalidElements.queryElementAt(0, Ci.nsISupports);
     if (!(element instanceof HTMLInputElement ||
           element instanceof HTMLTextAreaElement ||
           element instanceof HTMLSelectElement ||
@@ -118,6 +118,9 @@ FormSubmitObserver.prototype =
       return;
     }
 
+    // Update validation message before showing notification
+    this._validationMessage = element.validationMessage;
+
     // Don't connect up to the same element more than once.
     if (this._element == element) {
       this._showPopup(element);
@@ -127,8 +130,6 @@ FormSubmitObserver.prototype =
 
     element.focus();
 
-    this._validationMessage = element.validationMessage;
-
     // Watch for input changes which may change the validation message.
     element.addEventListener("input", this, false);
 
@@ -142,7 +143,7 @@ FormSubmitObserver.prototype =
   /*
    * Internal
    */
-  
+  
   /*
    * Handles input changes on the form element we've associated a popup
    * with. Updates the validation message or closes the popup if form data
@@ -189,18 +190,17 @@ FormSubmitObserver.prototype =
 
     // Note, this is relative to the browser and needs to be translated
     // in chrome.
-    panelData.contentRect = this._msgRect(aElement);
+    panelData.contentRect = BrowserUtils.getElementBoundingRect(aElement);
 
     // We want to show the popup at the middle of checkbox and radio buttons
     // and where the content begin for the other elements.
     let offset = 0;
-    let position = "";
 
     if (aElement.tagName == 'INPUT' &&
         (aElement.type == 'radio' || aElement.type == 'checkbox')) {
       panelData.position = "bottomcenter topleft";
     } else {
-      let win = aElement.ownerDocument.defaultView;
+      let win = aElement.ownerGlobal;
       let style = win.getComputedStyle(aElement, null);
       if (style.direction == 'rtl') {
         offset = parseInt(style.paddingRight) + parseInt(style.borderRightWidth);
@@ -218,8 +218,8 @@ FormSubmitObserver.prototype =
     this._mm.sendAsyncMessage("FormValidation:HidePopup", {});
   },
 
-  _getWindowUtils: function () {
-    return this._content.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
+  _getWindowUtils: function () {
+    return this._content.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
   },
 
   _isRootDocumentEvent: function (aEvent) {
@@ -231,21 +231,5 @@ FormSubmitObserver.prototype =
             (target.ownerDocument && target.ownerDocument == this._content.document));
   },
 
-  /*
-   * Return a message manager rect for the element's bounding client rect
-   * in top level browser coords.
-   */
-  _msgRect: function (aElement) {
-    let domRect = aElement.getBoundingClientRect();
-    let zoomFactor = this._getWindowUtils().fullZoom;
-    let { offsetX, offsetY } = BrowserUtils.offsetToTopLevelWindow(this._content, aElement);
-    return {
-      left: (domRect.left + offsetX) * zoomFactor,
-      top: (domRect.top + offsetY) * zoomFactor,
-      width: domRect.width * zoomFactor,
-      height: domRect.height * zoomFactor
-    };
-  },
-
   QueryInterface : XPCOMUtils.generateQI([Ci.nsIFormSubmitObserver])
 };
-- 
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