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Make sure el can be blurred before doing so (#4506)

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This commit is contained in:
Maribeth Bottorff
2020-12-08 16:07:58 -08:00
committed by GitHub
parent b21fa5de63
commit 2de6c9ec7a
1 changed files with 4 additions and 1 deletions
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5
core/workspace_svg.js
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@@ -1814,7 +1814,10 @@ Blockly.WorkspaceSvg.prototype.markFocused = function() {
Blockly.WorkspaceSvg.prototype.setBrowserFocus = function() {
// Blur whatever was focused since explicitly grabbing focus below does not
// work in Edge.
if (document.activeElement) {
// In IE, SVGs can't be blurred or focused. Check to make sure the current
// focus can be blurred before doing so.
// See https://github.com/google/blockly/issues/4440
if (document.activeElement && document.activeElement.blur) {
document.activeElement.blur();
}
try {