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/* ldgallery - A static generator which turns a collection of tagged
-- pictures into a searchable web gallery.
--
-- Copyright (C) 2019-2020 Guillaume FOUET
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
-- along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
// https://github.com/donmbelembe/vue-dragscroll/issues/61
export default class DragScrollClickFix {
readonly DRAG_DELAY = 250; // This is the minimal delay to consider a click to be a drag, mostly usefull for touch devices
timer: NodeJS.Timeout | null = null;
dragging: boolean = false;
onDragScrollStart() {
this.timer = setTimeout(() => this.onTimer(), this.DRAG_DELAY);
}
onTimer() {
this.timer = null;
this.dragging = true;
}
onDragScrollEnd() {
if (this.timer) {
clearTimeout(this.timer);
this.timer = null;
}
setTimeout(() => this.dragging = false);
}
onClickCapture(e: MouseEvent) {
if (this.dragging) {
this.dragging = false;
e.preventDefault();
e.stopPropagation();
}
}
}
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