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Remove initial handlers #195

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Remove initial handlers #195

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50 changes: 0 additions & 50 deletions src/focus-visible.js
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Original file line number Diff line number Diff line change
Expand Up @@ -178,66 +178,16 @@ function init() {
if (hadFocusVisibleRecently) {
hadKeyboardEvent = true;
}
addInitialPointerMoveListeners();
}
}

/**
* Add a group of listeners to detect usage of any pointing devices.
* These listeners will be added when the polyfill first loads, and anytime
* the window is blurred, so that they are active when the window regains
* focus.
*/
function addInitialPointerMoveListeners() {
document.addEventListener('mousemove', onInitialPointerMove);
document.addEventListener('mousedown', onInitialPointerMove);
document.addEventListener('mouseup', onInitialPointerMove);
document.addEventListener('pointermove', onInitialPointerMove);
document.addEventListener('pointerdown', onInitialPointerMove);
document.addEventListener('pointerup', onInitialPointerMove);
document.addEventListener('touchmove', onInitialPointerMove);
document.addEventListener('touchstart', onInitialPointerMove);
document.addEventListener('touchend', onInitialPointerMove);
}

function removeInitialPointerMoveListeners() {
document.removeEventListener('mousemove', onInitialPointerMove);
document.removeEventListener('mousedown', onInitialPointerMove);
document.removeEventListener('mouseup', onInitialPointerMove);
document.removeEventListener('pointermove', onInitialPointerMove);
document.removeEventListener('pointerdown', onInitialPointerMove);
document.removeEventListener('pointerup', onInitialPointerMove);
document.removeEventListener('touchmove', onInitialPointerMove);
document.removeEventListener('touchstart', onInitialPointerMove);
document.removeEventListener('touchend', onInitialPointerMove);
}

/**
* When the polfyill first loads, assume the user is in keyboard modality.
* If any event is received from a pointing device (e.g. mouse, pointer,
* touch), turn off keyboard modality.
* This accounts for situations where focus enters the page from the URL bar.
* @param {Event} e
*/
function onInitialPointerMove(e) {
// Work around a Safari quirk that fires a mousemove on <html> whenever the
// window blurs, even if you're tabbing out of the page. ¯\_(ツ)_/¯
if (e.target.nodeName.toLowerCase() === 'html') {
return;
}

hadKeyboardEvent = false;
removeInitialPointerMoveListeners();
}

document.addEventListener('keydown', onKeyDown, true);
document.addEventListener('mousedown', onPointerDown, true);
document.addEventListener('pointerdown', onPointerDown, true);
document.addEventListener('touchstart', onPointerDown, true);
document.addEventListener('focus', onFocus, true);
document.addEventListener('blur', onBlur, true);
document.addEventListener('visibilitychange', onVisibilityChange, true);
addInitialPointerMoveListeners();

document.body.classList.add('js-focus-visible');
}
Expand Down