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PolymerElements / paper-dropdown-menu

A Material Design browser select element
https://www.webcomponents.org/element/PolymerElements/paper-dropdown-menu
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Long delay between paper-dropdown-menu open and focus #150

Closed rictic closed 8 years ago

rictic commented 8 years ago

Moved from internal bug:

See: https://elements.polymer-project.org/elements/paper-dropdown-menu?view=demo:demo/index.html&active=paper-dropdown-menu

In paper-dropdown-menu I'm seeing a 540ms delay between when the dropdown is opened and the first item gets rendered as focused. This creates a jarring change after the UI should already be stable.

This is caused by focus being applied in iron-overlay-behavior's _finishRenderOpened. If focus causes visual changes then it should be applied before the open animation.

Alternatively the style for the focus should be much less glaring.

paper-menu {
  --paper-menu-focused-item: {
    display: none;
  };
}
valdrinkoshi commented 8 years ago

This is a behavior of iron-overlay-behavior, which postpones the focusing at the end of the animations. This should be done before. Will move this issue there

valdrinkoshi commented 8 years ago

This issue was moved to PolymerElements/iron-overlay-behavior#201