我试图使用extjs中的“聚焦”元素，但我们的UX希望只有当我们使用键盘聚焦时才有“边框”，而不是总是在“点击”元素时。有人知道一些配置来实现这一点吗？我现在已经使用了这个配置，但我不太喜欢它们，因为当我将鼠标移动到点击的按钮外时，边框就可以看到了：

// sass/var/Ext/button/Button.scss
$button-default-inner-border-width-focus: dynamic(1px);
$button-default-inner-border-color-focus: dynamic(#008d56);
$button-default-inner-border-color-over: dynamic(#25BD59);
$button-default-inner-border-color-focus-over: dynamic(#25BD59);
$button-default-inner-border-color-pressed: dynamic(#2AA65B);
$button-default-inner-border-color-focus-pressed: dynamic(#2AA65B);

$button-toolbar-inner-border-width-focus: dynamic(1px);
$button-toolbar-inner-border-color-focus: dynamic(#008d56);
$button-toolbar-inner-border-color-over: dynamic(#E1E7EB);
$button-toolbar-inner-border-color-focus-over: dynamic(#E1E7EB); // tmp hack to hide "focus"
$button-toolbar-inner-border-color-pressed: dynamic(#B4B8BC);//use same color as button
$button-toolbar-inner-border-color-focus-pressed: dynamic(#B4B8BC); // tmp hack to hide "focus"

// sass/var/Ext/view/Table.scss
$grid-row-cell-focus-border-width : dynamic(1px);

// sass/var/Ext/tab/Tab.scss
$tab-outline-width-focus: dynamic(1px);