mirror of
https://github.com/SillyTavern/SillyTavern.git
synced 2024-12-15 02:47:16 +01:00
250 lines
7.8 KiB
JavaScript
250 lines
7.8 KiB
JavaScript
/*!
|
||
* jQuery UI Touch Punch 1.0.9 as modified by RWAP Software
|
||
* based on original touchpunch v0.2.3 which has not been updated since 2014
|
||
*
|
||
* Updates by RWAP Software to take account of various suggested changes on the original code issues
|
||
*
|
||
* Original: https://github.com/furf/jquery-ui-touch-punch
|
||
* Copyright 2011–2014, Dave Furfero
|
||
* Dual licensed under the MIT or GPL Version 2 licenses.
|
||
*
|
||
* Fork: https://github.com/RWAP/jquery-ui-touch-punch
|
||
*
|
||
* Depends:
|
||
* jquery.ui.widget.js
|
||
* jquery.ui.mouse.js
|
||
*/
|
||
|
||
(function( factory ) {
|
||
if ( typeof define === "function" && define.amd ) {
|
||
|
||
// AMD. Register as an anonymous module.
|
||
define([ "jquery", "jquery-ui" ], factory );
|
||
} else {
|
||
|
||
// Browser globals
|
||
factory( jQuery );
|
||
}
|
||
}(function ($) {
|
||
|
||
// Detect touch support - Windows Surface devices and other touch devices
|
||
$.mspointer = window.navigator.msPointerEnabled;
|
||
$.touch = ( 'ontouchstart' in document
|
||
|| 'ontouchstart' in window
|
||
|| window.TouchEvent
|
||
|| (window.DocumentTouch && document instanceof DocumentTouch)
|
||
|| navigator.maxTouchPoints > 0
|
||
|| navigator.msMaxTouchPoints > 0
|
||
);
|
||
|
||
// Ignore browsers without touch or mouse support
|
||
if ((!$.touch && !$.mspointer) || !$.ui.mouse) {
|
||
return;
|
||
}
|
||
|
||
let mouseProto = $.ui.mouse.prototype,
|
||
_mouseInit = mouseProto._mouseInit,
|
||
_mouseDestroy = mouseProto._mouseDestroy,
|
||
touchHandled;
|
||
|
||
/**
|
||
* Get the x,y position of a touch event
|
||
* @param {Object} event A touch event
|
||
*/
|
||
function getTouchCoords (event) {
|
||
return {
|
||
x: event.originalEvent.changedTouches[0].pageX,
|
||
y: event.originalEvent.changedTouches[0].pageY
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Simulate a mouse event based on a corresponding touch event
|
||
* @param {Object} event A touch event
|
||
* @param {String} simulatedType The corresponding mouse event
|
||
*/
|
||
function simulateMouseEvent (event, simulatedType) {
|
||
|
||
// Ignore multi-touch events
|
||
if (event.originalEvent.touches.length > 1) {
|
||
return;
|
||
}
|
||
|
||
//Ignore input or textarea elements so user can still enter text
|
||
if ($(event.target).is("input") || $(event.target).is("textarea")) {
|
||
return;
|
||
}
|
||
|
||
// Prevent "Ignored attempt to cancel a touchmove event with cancelable=false" errors
|
||
if (event.cancelable) {
|
||
event.preventDefault();
|
||
}
|
||
|
||
let touch = event.originalEvent.changedTouches[0],
|
||
simulatedEvent = document.createEvent('MouseEvents');
|
||
|
||
// Initialize the simulated mouse event using the touch event's coordinates
|
||
simulatedEvent.initMouseEvent(
|
||
simulatedType, // type
|
||
true, // bubbles
|
||
true, // cancelable
|
||
window, // view
|
||
1, // detail
|
||
touch.screenX, // screenX
|
||
touch.screenY, // screenY
|
||
touch.clientX, // clientX
|
||
touch.clientY, // clientY
|
||
false, // ctrlKey
|
||
false, // altKey
|
||
false, // shiftKey
|
||
false, // metaKey
|
||
0, // button
|
||
null // relatedTarget
|
||
);
|
||
|
||
// Dispatch the simulated event to the target element
|
||
event.target.dispatchEvent(simulatedEvent);
|
||
}
|
||
|
||
/**
|
||
* Handle the jQuery UI widget's touchstart events
|
||
* @param {Object} event The widget element's touchstart event
|
||
*/
|
||
mouseProto._touchStart = function (event) {
|
||
|
||
let self = this;
|
||
|
||
// Interaction time
|
||
this._startedMove = event.timeStamp;
|
||
|
||
// Track movement to determine if interaction was a click
|
||
self._startPos = getTouchCoords(event);
|
||
|
||
// Ignore the event if another widget is already being handled
|
||
if (touchHandled || !self._mouseCapture(event.originalEvent.changedTouches[0])) {
|
||
return;
|
||
}
|
||
|
||
// Set the flag to prevent other widgets from inheriting the touch event
|
||
touchHandled = true;
|
||
|
||
// Track movement to determine if interaction was a click
|
||
self._touchMoved = false;
|
||
|
||
// Simulate the mouseover event
|
||
simulateMouseEvent(event, 'mouseover');
|
||
|
||
// Simulate the mousemove event
|
||
simulateMouseEvent(event, 'mousemove');
|
||
|
||
// Simulate the mousedown event
|
||
simulateMouseEvent(event, 'mousedown');
|
||
};
|
||
|
||
/**
|
||
* Handle the jQuery UI widget's touchmove events
|
||
* @param {Object} event The document's touchmove event
|
||
*/
|
||
mouseProto._touchMove = function (event) {
|
||
|
||
// Ignore event if not handled
|
||
if (!touchHandled) {
|
||
return;
|
||
}
|
||
|
||
// Interaction was moved
|
||
this._touchMoved = true;
|
||
|
||
// Simulate the mousemove event
|
||
simulateMouseEvent(event, 'mousemove');
|
||
};
|
||
|
||
/**
|
||
* Handle the jQuery UI widget's touchend events
|
||
* @param {Object} event The document's touchend event
|
||
*/
|
||
mouseProto._touchEnd = function (event) {
|
||
|
||
// Ignore event if not handled
|
||
if (!touchHandled) {
|
||
return;
|
||
}
|
||
|
||
// Simulate the mouseup event
|
||
simulateMouseEvent(event, 'mouseup');
|
||
|
||
// Simulate the mouseout event
|
||
simulateMouseEvent(event, 'mouseout');
|
||
|
||
// If the touch interaction did not move, it should trigger a click
|
||
// Check for this in two ways - length of time of simulation and distance moved
|
||
// Allow for Apple Stylus to be used also
|
||
let timeMoving = event.timeStamp - this._startedMove;
|
||
if (!this._touchMoved || timeMoving < 500) {
|
||
// Simulate the click event
|
||
simulateMouseEvent(event, 'click');
|
||
} else {
|
||
let endPos = getTouchCoords(event);
|
||
if ((Math.abs(endPos.x - this._startPos.x) < 10) && (Math.abs(endPos.y - this._startPos.y) < 10)) {
|
||
|
||
// If the touch interaction did not move, it should trigger a click
|
||
if (!this._touchMoved || event.originalEvent.changedTouches[0].touchType === 'stylus') {
|
||
// Simulate the click event
|
||
simulateMouseEvent(event, 'click');
|
||
}
|
||
}
|
||
}
|
||
|
||
// Unset the flag to determine the touch movement stopped
|
||
this._touchMoved = false;
|
||
|
||
// Unset the flag to allow other widgets to inherit the touch event
|
||
touchHandled = false;
|
||
};
|
||
|
||
/**
|
||
* A duck punch of the $.ui.mouse _mouseInit method to support touch events.
|
||
* This method extends the widget with bound touch event handlers that
|
||
* translate touch events to mouse events and pass them to the widget's
|
||
* original mouse event handling methods.
|
||
*/
|
||
mouseProto._mouseInit = function () {
|
||
|
||
let self = this;
|
||
|
||
// Microsoft Surface Support = remove original touch Action
|
||
if ($.support.mspointer) {
|
||
self.element[0].style.msTouchAction = 'none';
|
||
}
|
||
|
||
// Delegate the touch handlers to the widget's element
|
||
self.element.on({
|
||
touchstart: $.proxy(self, '_touchStart'),
|
||
touchmove: $.proxy(self, '_touchMove'),
|
||
touchend: $.proxy(self, '_touchEnd')
|
||
});
|
||
|
||
// Call the original $.ui.mouse init method
|
||
_mouseInit.call(self);
|
||
};
|
||
|
||
/**
|
||
* Remove the touch event handlers
|
||
*/
|
||
mouseProto._mouseDestroy = function () {
|
||
|
||
let self = this;
|
||
|
||
// Delegate the touch handlers to the widget's element
|
||
self.element.off({
|
||
touchstart: $.proxy(self, '_touchStart'),
|
||
touchmove: $.proxy(self, '_touchMove'),
|
||
touchend: $.proxy(self, '_touchEnd')
|
||
});
|
||
|
||
// Call the original $.ui.mouse destroy method
|
||
_mouseDestroy.call(self);
|
||
};
|
||
|
||
}));
|