-/*
- * L.Handler.PolyEdit is an editing handler for polylines and polygons.
- */
-
-L.Handler.PolyEdit = L.Handler.extend({
- options: {
- icon: new L.DivIcon({
- iconSize: new L.Point(8, 8),
- className: 'leaflet-div-icon leaflet-editing-icon'
- })
- },
-
- initialize: function (poly, options) {
- this._poly = poly;
- L.setOptions(this, options);
- },
-
- addHooks: function () {
- if (this._poly._map) {
- if (!this._markerGroup) {
- this._initMarkers();
- }
- this._poly._map.addLayer(this._markerGroup);
- }
- },
-
- removeHooks: function () {
- if (this._poly._map) {
- this._poly._map.removeLayer(this._markerGroup);
- delete this._markerGroup;
- delete this._markers;
- }
- },
-
- updateMarkers: function () {
- this._markerGroup.clearLayers();
- this._initMarkers();
- },
-
- _initMarkers: function () {
- if (!this._markerGroup) {
- this._markerGroup = new L.LayerGroup();
- }
- this._markers = [];
-
- var latlngs = this._poly._latlngs,
- i, j, len, marker;
-
- // TODO refactor holes implementation in Polygon to support it here
-
- for (i = 0, len = latlngs.length; i < len; i++) {
-
- marker = this._createMarker(latlngs[i], i);
- marker.on('click', this._onMarkerClick, this);
- this._markers.push(marker);
- }
-
- var markerLeft, markerRight;
-
- for (i = 0, j = len - 1; i < len; j = i++) {
- if (i === 0 && !(L.Polygon && (this._poly instanceof L.Polygon))) {
- continue;
- }
-
- markerLeft = this._markers[j];
- markerRight = this._markers[i];
-
- this._createMiddleMarker(markerLeft, markerRight);
- this._updatePrevNext(markerLeft, markerRight);
- }
- },
-
- _createMarker: function (latlng, index) {
- var marker = new L.Marker(latlng, {
- draggable: true,
- icon: this.options.icon
- });
-
- marker._origLatLng = latlng;
- marker._index = index;
-
- marker.on('drag', this._onMarkerDrag, this);
- marker.on('dragend', this._fireEdit, this);
-
- this._markerGroup.addLayer(marker);
-
- return marker;
- },
-
- _fireEdit: function () {
- this._poly.fire('edit');
- },
-
- _onMarkerDrag: function (e) {
- var marker = e.target;
-
- L.extend(marker._origLatLng, marker._latlng);
-
- if (marker._middleLeft) {
- marker._middleLeft.setLatLng(this._getMiddleLatLng(marker._prev, marker));
- }
- if (marker._middleRight) {
- marker._middleRight.setLatLng(this._getMiddleLatLng(marker, marker._next));
- }
-
- this._poly.redraw();
- },
-
- _onMarkerClick: function (e) {
- // we want to remove the marker on click, but if latlng count < 3, polyline would be invalid
- if (this._poly._latlngs.length < 3) { return; }
-
- var marker = e.target,
- i = marker._index;
-
- // remove the marker
- this._markerGroup.removeLayer(marker);
- this._markers.splice(i, 1);
- this._poly.spliceLatLngs(i, 1);
- this._updateIndexes(i, -1);
-
- // update prev/next links of adjacent markers
- this._updatePrevNext(marker._prev, marker._next);
-
- // remove ghost markers near the removed marker
- if (marker._middleLeft) {
- this._markerGroup.removeLayer(marker._middleLeft);
- }
- if (marker._middleRight) {
- this._markerGroup.removeLayer(marker._middleRight);
- }
-
- // create a ghost marker in place of the removed one
- if (marker._prev && marker._next) {
- this._createMiddleMarker(marker._prev, marker._next);
-
- } else if (!marker._prev) {
- marker._next._middleLeft = null;
-
- } else if (!marker._next) {
- marker._prev._middleRight = null;
- }
-
- this._poly.fire('edit');
- },
-
- _updateIndexes: function (index, delta) {
- this._markerGroup.eachLayer(function (marker) {
- if (marker._index > index) {
- marker._index += delta;
- }
- });
- },
-
- _createMiddleMarker: function (marker1, marker2) {
- var latlng = this._getMiddleLatLng(marker1, marker2),
- marker = this._createMarker(latlng),
- onClick,
- onDragStart,
- onDragEnd;
-
- marker.setOpacity(0.6);
-
- marker1._middleRight = marker2._middleLeft = marker;
-
- onDragStart = function () {
- var i = marker2._index;
-
- marker._index = i;
-
- marker
- .off('click', onClick)
- .on('click', this._onMarkerClick, this);
-
- latlng.lat = marker.getLatLng().lat;
- latlng.lng = marker.getLatLng().lng;
- this._poly.spliceLatLngs(i, 0, latlng);
- this._markers.splice(i, 0, marker);
-
- marker.setOpacity(1);
-
- this._updateIndexes(i, 1);
- marker2._index++;
- this._updatePrevNext(marker1, marker);
- this._updatePrevNext(marker, marker2);
- };
-
- onDragEnd = function () {
- marker.off('dragstart', onDragStart, this);
- marker.off('dragend', onDragEnd, this);
-
- this._createMiddleMarker(marker1, marker);
- this._createMiddleMarker(marker, marker2);
- };
-
- onClick = function () {
- onDragStart.call(this);
- onDragEnd.call(this);
- this._poly.fire('edit');
- };
-
- marker
- .on('click', onClick, this)
- .on('dragstart', onDragStart, this)
- .on('dragend', onDragEnd, this);
-
- this._markerGroup.addLayer(marker);
- },
-
- _updatePrevNext: function (marker1, marker2) {
- if (marker1) {
- marker1._next = marker2;
- }
- if (marker2) {
- marker2._prev = marker1;
- }
- },
-
- _getMiddleLatLng: function (marker1, marker2) {
- var map = this._poly._map,
- p1 = map.latLngToLayerPoint(marker1.getLatLng()),
- p2 = map.latLngToLayerPoint(marker2.getLatLng());
-
- return map.layerPointToLatLng(p1._add(p2)._divideBy(2));
- }
-});
-
-L.Polyline.addInitHook(function () {
-
- if (L.Handler.PolyEdit) {
- this.editing = new L.Handler.PolyEdit(this);
-
- if (this.options.editable) {
- this.editing.enable();
- }
- }
-
- this.on('add', function () {
- if (this.editing && this.editing.enabled()) {
- this.editing.addHooks();
- }
- });
-
- this.on('remove', function () {
- if (this.editing && this.editing.enabled()) {
- this.editing.removeHooks();
- }
- });
-});
-
-
projects / rails.git / commitdiff
