[Pkg-mozext-commits] [tabmixplus] 69/107: Calling window.duplicateTabIn, to duplicate tab to window, break Tabmix.delayedStartup. When gBrowser._switcher.visibleTab is closing window.getComputedStyle from "tab-background-middle" is null Update changeset 552d048cb11d

[David Prévot]

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taffit pushed a commit to branch master
in repository tabmixplus.

commit a2baba6bdd8d15f9f5a59046266e315ec7d89a04
Author: onemen <tabmix.onemen at gmail.com>
Date:   Thu Nov 12 11:41:10 2015 +0200

    Calling window.duplicateTabIn, to duplicate tab to window, break Tabmix.delayedStartup.
    When gBrowser._switcher.visibleTab is closing window.getComputedStyle from "tab-background-middle" is null
    Update changeset 552d048cb11d
---
 chrome/content/tab/tab.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/chrome/content/tab/tab.js b/chrome/content/tab/tab.js
index 859910c..3fb48b1 100644
--- a/chrome/content/tab/tab.js
+++ b/chrome/content/tab/tab.js
@@ -1773,9 +1773,12 @@ var gTMPprefObserver = {
 
     // Workaround bug 943308 - tab-background not fully overlap the tab curves
     // when layout.css.devPixelsPerPx is not 1.
-    let selectedTab = Tabmix.isVersion(390) && gBrowser._switcher ?
-        gBrowser._switcher.visibleTab : gBrowser.selectedTab;
-    let bgMiddle = document.getAnonymousElementByAttribute(selectedTab, "class", "tab-background-middle");
+    let tab = gBrowser.selectedTab;
+    let visuallyselected = !Tabmix.isVersion(390) || tab.hasAttribute("visuallyselected");
+    if (!visuallyselected) {
+      tab.setAttribute("visuallyselected", true);
+    }
+    let bgMiddle = document.getAnonymousElementByAttribute(tab, "class", "tab-background-middle");
     let margin = (-parseFloat(window.getComputedStyle(bgMiddle).borderLeftWidth)) + "px";
     let bgMiddleMargin = this.dynamicRules.bgMiddleMargin;
     if (bgMiddleMargin) {
@@ -1786,6 +1789,9 @@ var gTMPprefObserver = {
                     '-moz-margin-end: %PX; -moz-margin-start: %PX;}';
       this.insertRule(newRule.replace(/%PX/g, margin), "bgMiddleMargin");
     }
+    if (!visuallyselected) {
+      tab.removeAttribute("visuallyselected");
+    }
   },
 
   addDynamicRules: function() {

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