open-consul/ui-v2/app/utils/dom/click-first-anchor.js
John Cowen 466c3c6899 ui: Allow text selection of clickable elements and their contents (#5770)
* ui: Allow text selection of clickable elements and their contents

This commit disables a click on mousedown be removing the `href`
attribute and moving it to a `data-href` attribute. On mouseup it will
only move it back if there is no selection. This means that an anchor
will only be followed on click _if_ there is no selection.

This fixes the fact that whenever you select some copy within a
clickable element it immediately throws you into the linked page when
you release your mouse.

Further notes:

We use the `isCollapsed` property here which 'seems' to be classed as
'experimental' in one place where I researched it:

https://developer.mozilla.org/en-US/docs/Web/API/Selection/isCollapsed

Although in others it makes no mention of this 'experimental' e.g:

- https://webplatform.github.io/docs/dom/Selection/isCollapsed/
- https://w3c.github.io/selection-api/#dom-selection-iscollapsed

I may have gone a little overboard in feature detection for this, but I
conscious of that fact that if `isCollapsed` doesn't exist at some point
in the future (something that seems unlikely). The code here will have
no effect on the UI. But I'd specifically like a second pair of eyes on
that.

* ui: Don't break right click, detects a secondary click on mousedown

* ui: Put anchor selection capability behind an ENV var
2019-09-04 08:34:58 +00:00

37 lines
972 B
JavaScript

const clickEvent = function($el) {
['mousedown', 'mouseup', 'click']
.map(function(type) {
return new MouseEvent(type, {
bubbles: true,
cancelable: true,
view: window,
});
})
.forEach(function(event) {
$el.dispatchEvent(event);
});
};
export default function(closest, click = clickEvent) {
// TODO: Decide whether we should use `e` for ease
// or `target`/`el`
return function(e) {
// click on row functionality
// so if you click the actual row but not a link
// find the first link and fire that instead
const name = e.target.nodeName.toLowerCase();
switch (name) {
case 'input':
case 'label':
case 'a':
case 'button':
return;
}
// TODO: why should this be restricted to a tr
// closest should probably be relaced with a finder function
const $a = closest('tr', e.target).querySelector('a');
if ($a) {
click($a);
}
};
}