mirror of
https://github.com/IvarK/AntimatterDimensionsSourceCode.git
synced 2024-11-10 14:12:02 +00:00
somewhat functional mobile drag and drop
This commit is contained in:
IvarK
parent
33dab46d62
commit
e62982b1c7
@ -2754,6 +2754,7 @@
|
||||
<script type="text/javascript" src="javascripts/breakinfinity.js"></script>
|
||||
<script type="text/javascript" src="javascripts/chart.js"></script>
|
||||
<script type="text/javascript" src="javascripts/lz-string.js"></script>
|
||||
<script type="text/javascript" src="javascripts/DragDropTouch.js"></script>
|
||||
|
||||
|
||||
<script type="text/javascript" src="javascripts/core/polyfill.js"></script>
|
||||
|
||||
395
javascripts/DragDropTouch.js
Normal file
395
javascripts/DragDropTouch.js
Normal file
@ -0,0 +1,395 @@
|
||||
var DragDropTouch;
|
||||
(function (DragDropTouch_1) {
|
||||
'use strict';
|
||||
/**
|
||||
* Object used to hold the data that is being dragged during drag and drop operations.
|
||||
*
|
||||
* It may hold one or more data items of different types. For more information about
|
||||
* drag and drop operations and data transfer objects, see
|
||||
* <a href="https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer">HTML Drag and Drop API</a>.
|
||||
*
|
||||
* This object is created automatically by the @see:DragDropTouch singleton and is
|
||||
* accessible through the @see:dataTransfer property of all drag events.
|
||||
*/
|
||||
var DataTransfer = (function () {
|
||||
function DataTransfer() {
|
||||
this._dropEffect = 'move';
|
||||
this._effectAllowed = 'all';
|
||||
this._data = {};
|
||||
}
|
||||
Object.defineProperty(DataTransfer.prototype, "dropEffect", {
|
||||
/**
|
||||
* Gets or sets the type of drag-and-drop operation currently selected.
|
||||
* The value must be 'none', 'copy', 'link', or 'move'.
|
||||
*/
|
||||
get: function () {
|
||||
return this._dropEffect;
|
||||
},
|
||||
set: function (value) {
|
||||
this._dropEffect = value;
|
||||
},
|
||||
enumerable: true,
|
||||
configurable: true
|
||||
});
|
||||
Object.defineProperty(DataTransfer.prototype, "effectAllowed", {
|
||||
/**
|
||||
* Gets or sets the types of operations that are possible.
|
||||
* Must be one of 'none', 'copy', 'copyLink', 'copyMove', 'link',
|
||||
* 'linkMove', 'move', 'all' or 'uninitialized'.
|
||||
*/
|
||||
get: function () {
|
||||
return this._effectAllowed;
|
||||
},
|
||||
set: function (value) {
|
||||
this._effectAllowed = value;
|
||||
},
|
||||
enumerable: true,
|
||||
configurable: true
|
||||
});
|
||||
Object.defineProperty(DataTransfer.prototype, "types", {
|
||||
/**
|
||||
* Gets an array of strings giving the formats that were set in the @see:dragstart event.
|
||||
*/
|
||||
get: function () {
|
||||
return Object.keys(this._data);
|
||||
},
|
||||
enumerable: true,
|
||||
configurable: true
|
||||
});
|
||||
/**
|
||||
* Removes the data associated with a given type.
|
||||
*
|
||||
* The type argument is optional. If the type is empty or not specified, the data
|
||||
* associated with all types is removed. If data for the specified type does not exist,
|
||||
* or the data transfer contains no data, this method will have no effect.
|
||||
*
|
||||
* @param type Type of data to remove.
|
||||
*/
|
||||
DataTransfer.prototype.clearData = function (type) {
|
||||
if (type != null) {
|
||||
delete this._data[type];
|
||||
}
|
||||
else {
|
||||
this._data = null;
|
||||
}
|
||||
};
|
||||
/**
|
||||
* Retrieves the data for a given type, or an empty string if data for that type does
|
||||
* not exist or the data transfer contains no data.
|
||||
*
|
||||
* @param type Type of data to retrieve.
|
||||
*/
|
||||
DataTransfer.prototype.getData = function (type) {
|
||||
return this._data[type] || '';
|
||||
};
|
||||
/**
|
||||
* Set the data for a given type.
|
||||
*
|
||||
* For a list of recommended drag types, please see
|
||||
* https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Recommended_Drag_Types.
|
||||
*
|
||||
* @param type Type of data to add.
|
||||
* @param value Data to add.
|
||||
*/
|
||||
DataTransfer.prototype.setData = function (type, value) {
|
||||
this._data[type] = value;
|
||||
};
|
||||
/**
|
||||
* Set the image to be used for dragging if a custom one is desired.
|
||||
*
|
||||
* @param img An image element to use as the drag feedback image.
|
||||
* @param offsetX The horizontal offset within the image.
|
||||
* @param offsetY The vertical offset within the image.
|
||||
*/
|
||||
DataTransfer.prototype.setDragImage = function (img, offsetX, offsetY) {
|
||||
var ddt = DragDropTouch._instance;
|
||||
ddt._imgCustom = img;
|
||||
ddt._imgOffset = { x: offsetX, y: offsetY };
|
||||
};
|
||||
return DataTransfer;
|
||||
})();
|
||||
DragDropTouch_1.DataTransfer = DataTransfer;
|
||||
/**
|
||||
* Defines a class that adds support for touch-based HTML5 drag/drop operations.
|
||||
*
|
||||
* The @see:DragDropTouch class listens to touch events and raises the
|
||||
* appropriate HTML5 drag/drop events as if the events had been caused
|
||||
* by mouse actions.
|
||||
*
|
||||
* The purpose of this class is to enable using existing, standard HTML5
|
||||
* drag/drop code on mobile devices running IOS or Android.
|
||||
*
|
||||
* To use, include the DragDropTouch.js file on the page. The class will
|
||||
* automatically start monitoring touch events and will raise the HTML5
|
||||
* drag drop events (dragstart, dragenter, dragleave, drop, dragend) which
|
||||
* should be handled by the application.
|
||||
*
|
||||
* For details and examples on HTML drag and drop, see
|
||||
* https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Drag_operations.
|
||||
*/
|
||||
var DragDropTouch = (function () {
|
||||
/**
|
||||
* Initializes the single instance of the @see:DragDropTouch class.
|
||||
*/
|
||||
function DragDropTouch() {
|
||||
this._lastClick = 0;
|
||||
// enforce singleton pattern
|
||||
if (DragDropTouch._instance) {
|
||||
throw 'DragDropTouch instance already created.';
|
||||
}
|
||||
// listen to touch events
|
||||
if ('ontouchstart' in document) {
|
||||
var d = document, ts = this._touchstart.bind(this), tm = this._touchmove.bind(this), te = this._touchend.bind(this);
|
||||
d.addEventListener('touchstart', ts);
|
||||
d.addEventListener('touchmove', tm);
|
||||
d.addEventListener('touchend', te);
|
||||
d.addEventListener('touchcancel', te);
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Gets a reference to the @see:DragDropTouch singleton.
|
||||
*/
|
||||
DragDropTouch.getInstance = function () {
|
||||
return DragDropTouch._instance;
|
||||
};
|
||||
// ** event handlers
|
||||
DragDropTouch.prototype._touchstart = function (e) {
|
||||
var _this = this;
|
||||
if (this._shouldHandle(e)) {
|
||||
// raise double-click and prevent zooming
|
||||
if (Date.now() - this._lastClick < DragDropTouch._DBLCLICK) {
|
||||
if (this._dispatchEvent(e, 'dblclick', e.target)) {
|
||||
e.preventDefault();
|
||||
this._reset();
|
||||
return;
|
||||
}
|
||||
}
|
||||
// clear all variables
|
||||
this._reset();
|
||||
// get nearest draggable element
|
||||
var src = this._closestDraggable(e.target);
|
||||
if (src) {
|
||||
// give caller a chance to handle the hover/move events
|
||||
if (!this._dispatchEvent(e, 'mousemove', e.target) &&
|
||||
!this._dispatchEvent(e, 'mousedown', e.target)) {
|
||||
// get ready to start dragging
|
||||
this._dragSource = src;
|
||||
this._ptDown = this._getPoint(e);
|
||||
this._lastTouch = e;
|
||||
e.preventDefault();
|
||||
// show context menu if the user hasn't started dragging after a while
|
||||
setTimeout(function () {
|
||||
if (_this._dragSource == src && _this._img == null) {
|
||||
if (_this._dispatchEvent(e, 'contextmenu', src)) {
|
||||
_this._reset();
|
||||
}
|
||||
}
|
||||
}, DragDropTouch._CTXMENU);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
DragDropTouch.prototype._touchmove = function (e) {
|
||||
if (this._shouldHandle(e)) {
|
||||
// see if target wants to handle move
|
||||
var target = this._getTarget(e);
|
||||
if (this._dispatchEvent(e, 'mousemove', target)) {
|
||||
this._lastTouch = e;
|
||||
e.preventDefault();
|
||||
return;
|
||||
}
|
||||
// start dragging
|
||||
if (this._dragSource && !this._img) {
|
||||
var delta = this._getDelta(e);
|
||||
if (delta > DragDropTouch._THRESHOLD) {
|
||||
this._dispatchEvent(e, 'dragstart', this._dragSource);
|
||||
this._createImage(e);
|
||||
this._dispatchEvent(e, 'dragenter', target);
|
||||
}
|
||||
}
|
||||
// continue dragging
|
||||
if (this._img) {
|
||||
this._lastTouch = e;
|
||||
e.preventDefault(); // prevent scrolling
|
||||
if (target != this._lastTarget) {
|
||||
this._dispatchEvent(this._lastTouch, 'dragleave', this._lastTarget);
|
||||
this._dispatchEvent(e, 'dragenter', target);
|
||||
this._lastTarget = target;
|
||||
}
|
||||
this._moveImage(e);
|
||||
this._dispatchEvent(e, 'dragover', target);
|
||||
}
|
||||
}
|
||||
};
|
||||
DragDropTouch.prototype._touchend = function (e) {
|
||||
if (this._shouldHandle(e)) {
|
||||
// see if target wants to handle up
|
||||
if (this._dispatchEvent(this._lastTouch, 'mouseup', e.target)) {
|
||||
e.preventDefault();
|
||||
return;
|
||||
}
|
||||
// user clicked the element but didn't drag, so clear the source and simulate a click
|
||||
if (!this._img) {
|
||||
this._dragSource = null;
|
||||
this._dispatchEvent(this._lastTouch, 'click', e.target);
|
||||
this._lastClick = Date.now();
|
||||
}
|
||||
// finish dragging
|
||||
this._destroyImage();
|
||||
if (this._dragSource) {
|
||||
if (e.type.indexOf('cancel') < 0) {
|
||||
this._dispatchEvent(this._lastTouch, 'drop', this._lastTarget);
|
||||
}
|
||||
this._dispatchEvent(this._lastTouch, 'dragend', this._dragSource);
|
||||
this._reset();
|
||||
}
|
||||
}
|
||||
};
|
||||
// ** utilities
|
||||
// ignore events that have been handled or that involve more than one touch
|
||||
DragDropTouch.prototype._shouldHandle = function (e) {
|
||||
return e &&
|
||||
!e.defaultPrevented &&
|
||||
e.touches && e.touches.length < 2;
|
||||
};
|
||||
// clear all members
|
||||
DragDropTouch.prototype._reset = function () {
|
||||
this._destroyImage();
|
||||
this._dragSource = null;
|
||||
this._lastTouch = null;
|
||||
this._lastTarget = null;
|
||||
this._ptDown = null;
|
||||
this._dataTransfer = new DataTransfer();
|
||||
};
|
||||
// get point for a touch event
|
||||
DragDropTouch.prototype._getPoint = function (e, page) {
|
||||
if (e && e.touches) {
|
||||
e = e.touches[0];
|
||||
}
|
||||
return { x: page ? e.pageX : e.clientX, y: page ? e.pageY : e.clientY };
|
||||
};
|
||||
// get distance between the current touch event and the first one
|
||||
DragDropTouch.prototype._getDelta = function (e) {
|
||||
var p = this._getPoint(e);
|
||||
return Math.abs(p.x - this._ptDown.x) + Math.abs(p.y - this._ptDown.y);
|
||||
};
|
||||
// get the element at a given touch event
|
||||
DragDropTouch.prototype._getTarget = function (e) {
|
||||
var pt = this._getPoint(e), el = document.elementFromPoint(pt.x, pt.y);
|
||||
while (el && getComputedStyle(el).pointerEvents == 'none') {
|
||||
el = el.parentElement;
|
||||
}
|
||||
return el;
|
||||
};
|
||||
// create drag image from source element
|
||||
DragDropTouch.prototype._createImage = function (e) {
|
||||
// just in case...
|
||||
if (this._img) {
|
||||
this._destroyImage();
|
||||
}
|
||||
// create drag image from custom element or drag source
|
||||
var src = this._imgCustom || this._dragSource;
|
||||
this._img = src.cloneNode(true);
|
||||
this._copyStyle(src, this._img);
|
||||
this._img.style.top = this._img.style.left = '-9999px';
|
||||
// if creating from drag source, apply offset and opacity
|
||||
if (!this._imgCustom) {
|
||||
var rc = src.getBoundingClientRect(), pt = this._getPoint(e);
|
||||
this._imgOffset = { x: pt.x - rc.left, y: pt.y - rc.top };
|
||||
this._img.style.opacity = DragDropTouch._OPACITY.toString();
|
||||
}
|
||||
// add image to document
|
||||
this._moveImage(e);
|
||||
document.body.appendChild(this._img);
|
||||
};
|
||||
// dispose of drag image element
|
||||
DragDropTouch.prototype._destroyImage = function () {
|
||||
if (this._img && this._img.parentElement) {
|
||||
this._img.parentElement.removeChild(this._img);
|
||||
}
|
||||
this._img = null;
|
||||
this._imgCustom = null;
|
||||
};
|
||||
// move the drag image element
|
||||
DragDropTouch.prototype._moveImage = function (e) {
|
||||
var _this = this;
|
||||
requestAnimationFrame(function () {
|
||||
var pt = _this._getPoint(e, true), s = _this._img.style;
|
||||
s.position = 'absolute';
|
||||
s.pointerEvents = 'none';
|
||||
s.zIndex = '999999';
|
||||
s.left = Math.round(pt.x - _this._imgOffset.x) + 'px';
|
||||
s.top = Math.round(pt.y - _this._imgOffset.y) + 'px';
|
||||
});
|
||||
};
|
||||
// copy properties from an object to another
|
||||
DragDropTouch.prototype._copyProps = function (dst, src, props) {
|
||||
for (var i = 0; i < props.length; i++) {
|
||||
var p = props[i];
|
||||
dst[p] = src[p];
|
||||
}
|
||||
};
|
||||
DragDropTouch.prototype._copyStyle = function (src, dst) {
|
||||
// remove potentially troublesome attributes
|
||||
DragDropTouch._rmvAtts.forEach(function (att) {
|
||||
dst.removeAttribute(att);
|
||||
});
|
||||
// copy canvas content
|
||||
if (src instanceof HTMLCanvasElement) {
|
||||
var cSrc = src, cDst = dst;
|
||||
cDst.width = cSrc.width;
|
||||
cDst.height = cSrc.height;
|
||||
cDst.getContext('2d').drawImage(cSrc, 0, 0);
|
||||
}
|
||||
// copy style
|
||||
var cs = getComputedStyle(src);
|
||||
for (var i = 0; i < cs.length; i++) {
|
||||
var key = cs[i];
|
||||
dst.style[key] = cs[key];
|
||||
}
|
||||
dst.style.pointerEvents = 'none';
|
||||
// and repeat for all children
|
||||
for (var i = 0; i < src.children.length; i++) {
|
||||
this._copyStyle(src.children[i], dst.children[i]);
|
||||
}
|
||||
};
|
||||
DragDropTouch.prototype._dispatchEvent = function (e, type, target) {
|
||||
if (e && target) {
|
||||
var evt = document.createEvent('Event'), t = e.touches ? e.touches[0] : e;
|
||||
evt.initEvent(type, true, true);
|
||||
evt.button = 0;
|
||||
evt.which = evt.buttons = 1;
|
||||
this._copyProps(evt, e, DragDropTouch._kbdProps);
|
||||
this._copyProps(evt, t, DragDropTouch._ptProps);
|
||||
evt.dataTransfer = this._dataTransfer;
|
||||
target.dispatchEvent(evt);
|
||||
return evt.defaultPrevented;
|
||||
}
|
||||
return false;
|
||||
};
|
||||
// gets an element's closest draggable ancestor
|
||||
DragDropTouch.prototype._closestDraggable = function (e) {
|
||||
for (; e; e = e.parentElement) {
|
||||
if (e.hasAttribute('draggable')) {
|
||||
return e;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
};
|
||||
/*private*/ DragDropTouch._instance = new DragDropTouch(); // singleton
|
||||
// constants
|
||||
DragDropTouch._THRESHOLD = 5; // pixels to move before drag starts
|
||||
DragDropTouch._OPACITY = 0.5; // drag image opacity
|
||||
DragDropTouch._DBLCLICK = 500; // max ms between clicks in a double click
|
||||
DragDropTouch._CTXMENU = 900; // ms to hold before raising 'contextmenu' event
|
||||
// copy styles/attributes from drag source to drag image element
|
||||
DragDropTouch._rmvAtts = 'id,class,style,draggable'.split(',');
|
||||
// synthesize and dispatch an event
|
||||
// returns true if the event has been handled (e.preventDefault == true)
|
||||
DragDropTouch._kbdProps = 'altKey,ctrlKey,metaKey,shiftKey'.split(',');
|
||||
DragDropTouch._ptProps = 'pageX,pageY,clientX,clientY,screenX,screenY'.split(',');
|
||||
return DragDropTouch;
|
||||
})();
|
||||
DragDropTouch_1.DragDropTouch = DragDropTouch;
|
||||
})(DragDropTouch || (DragDropTouch = {}));
|
||||
//# sourceMappingURL=DragDropTouchNoWijmo.js.map
|
||||
Loading…
Reference in New Issue
Block a user