133 lines
3.8 KiB
JavaScript
133 lines
3.8 KiB
JavaScript
/*
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* L.DomEvent contains functions for working with DOM events.
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*/
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L.DomEvent = {
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/* inpired by John Resig, Dean Edwards and YUI addEvent implementations */
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addListener: function(/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn, /*Object*/ context) {
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var id = L.Util.stamp(fn);
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function handler(e) {
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return fn.call(context || obj, e || L.DomEvent._getEvent());
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}
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if (L.Browser.touch && (type == 'dblclick') && this.addDoubleTapListener) {
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this.addDoubleTapListener(obj, handler, id);
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} else if ('addEventListener' in obj) {
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if (type == 'mousewheel') {
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obj.addEventListener('DOMMouseScroll', handler, false);
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obj.addEventListener(type, handler, false);
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} else if ((type == 'mouseenter') || (type == 'mouseleave')) {
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var originalHandler = handler,
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newType = (type == 'mouseenter' ? 'mouseover' : 'mouseout');
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handler = function(e) {
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if (!L.DomEvent._checkMouse(obj, e)) return;
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return originalHandler(e);
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};
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obj.addEventListener(newType, handler, false);
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} else {
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obj.addEventListener(type, handler, false);
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}
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} else if ('attachEvent' in obj) {
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obj.attachEvent("on" + type, handler);
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}
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obj['_leaflet_' + type + id] = handler;
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},
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removeListener: function(/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn) {
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var id = L.Util.stamp(fn),
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key = '_leaflet_' + type + id;
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handler = obj[key];
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if (L.Browser.mobileWebkit && (type == 'dblclick') && this.removeDoubleTapListener) {
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this.removeDoubleTapListener(obj, id);
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} else if ('removeEventListener' in obj) {
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if (type == 'mousewheel') {
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obj.removeEventListener('DOMMouseScroll', handler, false);
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obj.removeEventListener(type, handler, false);
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} else if ((type == 'mouseenter') || (type == 'mouseleave')) {
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obj.removeEventListener((type == 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
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} else {
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obj.removeEventListener(type, handler, false);
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}
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} else if ('detachEvent' in obj) {
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obj.detachEvent("on" + type, handler);
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}
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obj[key] = null;
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},
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_checkMouse: function(el, e) {
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var related = e.relatedTarget;
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if (!related) return true;
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try {
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while (related && (related != el)) {
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related = related.parentNode;
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}
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} catch(err) { return false; }
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return (related != el);
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},
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_getEvent: function()/*->Event*/ {
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var e = window.event;
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if (!e) {
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var caller = arguments.callee.caller;
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while (caller) {
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e = caller['arguments'][0];
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if (e && Event == e.constructor) { break; }
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caller = caller.caller;
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}
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}
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return e;
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},
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stopPropagation: function(/*Event*/ e) {
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if (e.stopPropagation) {
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e.stopPropagation();
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} else {
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e.cancelBubble = true;
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}
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},
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disableClickPropagation: function(/*HTMLElement*/ el) {
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L.DomEvent.addListener(el, 'mousedown', L.DomEvent.stopPropagation);
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L.DomEvent.addListener(el, 'click', L.DomEvent.stopPropagation);
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L.DomEvent.addListener(el, 'dblclick', L.DomEvent.stopPropagation);
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},
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preventDefault: function(/*Event*/ e) {
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if (e.preventDefault) {
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e.preventDefault();
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} else {
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e.returnValue = false;
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}
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},
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stop: function(e) {
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L.DomEvent.preventDefault(e);
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L.DomEvent.stopPropagation(e);
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},
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getMousePosition: function(e, container) {
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var x = e.pageX ? e.pageX : e.clientX +
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document.body.scrollLeft + document.documentElement.scrollLeft,
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y = e.pageY ? e.pageY : e.clientY +
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document.body.scrollTop + document.documentElement.scrollTop,
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pos = new L.Point(x, y);
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return (container ?
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pos.subtract(L.DomUtil.getCumulativeOffset(container)) : pos);
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},
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getWheelDelta: function(e) {
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var delta = 0;
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if (e.wheelDelta) { delta = e.wheelDelta/120; }
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if (e.detail) { delta = -e.detail/3; }
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return delta;
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}
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};
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