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[GrabToPan] Use Element.matches() rather than prefixed ...matchesSelector versions

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At this point in time all of the browsers that PDF.js support now implements, with some margin based on the version numbers, `Element.matches()` according to the following compatibility information:
 - https://developer.mozilla.org/en-US/docs/Web/API/Element/matches#browser_compatibility
 - https://caniuse.com/matchesselector
This commit is contained in:
Jonas Jenwald 2021-03-25 22:33:17 +01:00
parent ebd2dfbae0
commit b11b7aaa38
1 changed files with 2 additions and 17 deletions
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19
web/grab_to_pan.js
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@ -95,9 +95,8 @@ GrabToPan.prototype = {
* @returns {boolean} Whether to not react to the click event. * @returns {boolean} Whether to not react to the click event.
*/ */
ignoreTarget: function GrabToPan_ignoreTarget(node) { ignoreTarget: function GrabToPan_ignoreTarget(node) {
// Use matchesSelector to check whether the clicked element // Check whether the clicked element is, a child of, an input element/link.
// is (a child of) an input element / link return node.matches(
return node[matchesSelector](
"a[href], a[href] *, input, textarea, button, button *, select, option" "a[href], a[href] *, input, textarea, button, button *, select, option"
); );
}, },
@ -178,20 +177,6 @@ GrabToPan.prototype = {
}, },
}; };
// Get the correct (vendor-prefixed) name of the matches method.
let matchesSelector;
["webkitM", "mozM", "m"].some(function (prefix) {
let name = prefix + "atches";
if (name in document.documentElement) {
matchesSelector = name;
}
name += "Selector";
if (name in document.documentElement) {
matchesSelector = name;
}
return matchesSelector; // If found, then truthy, and [].some() ends.
});
/** /**
* Whether the left mouse is not pressed. * Whether the left mouse is not pressed.
* @param event {MouseEvent} * @param event {MouseEvent}