FM / handler

/opt/canhelp/node_modules/leaflet/src/map/handler/

/opt/canhelp/node_modules/leaflet/src/map/handler

Name	Size	Mode	Actions
Map.BoxZoom.js	3911	0644	edit dl rm
Map.DoubleClickZoom.js	1563	0644	edit dl rm
Map.Drag.js	7248	0644	edit dl rm
Map.Keyboard.js	4150	0644	edit dl rm
Map.ScrollWheelZoom.js	2758	0644	edit dl rm
Map.TapHold.js	3062	0644	edit dl rm
Map.TouchZoom.js	4312	0644	edit dl rm

Edit: /opt/canhelp/node_modules/leaflet/src/map/handler/Map.BoxZoom.js (3911B)

import {Map} from '../Map';
import {Handler} from '../../core/Handler';
import * as Util from '../../core/Util';
import * as DomUtil from '../../dom/DomUtil';
import * as DomEvent from '../../dom/DomEvent';
import {LatLngBounds} from '../../geo/LatLngBounds';
import {Bounds} from '../../geometry/Bounds';

/*
 * L.Handler.BoxZoom is used to add shift-drag zoom interaction to the map
 * (zoom to a selected bounding box), enabled by default.
 */

// @namespace Map
// @section Interaction Options
Map.mergeOptions({
	// @option boxZoom: Boolean = true
	// Whether the map can be zoomed to a rectangular area specified by
	// dragging the mouse while pressing the shift key.
	boxZoom: true
});

export var BoxZoom = Handler.extend({
	initialize: function (map) {
		this._map = map;
		this._container = map._container;
		this._pane = map._panes.overlayPane;
		this._resetStateTimeout = 0;
		map.on('unload', this._destroy, this);
	},

addHooks: function () {
		DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
	},

removeHooks: function () {
		DomEvent.off(this._container, 'mousedown', this._onMouseDown, this);
	},

moved: function () {
		return this._moved;
	},

_destroy: function () {
		DomUtil.remove(this._pane);
		delete this._pane;
	},

_resetState: function () {
		this._resetStateTimeout = 0;
		this._moved = false;
	},

_clearDeferredResetState: function () {
		if (this._resetStateTimeout !== 0) {
			clearTimeout(this._resetStateTimeout);
			this._resetStateTimeout = 0;
		}
	},

_onMouseDown: function (e) {
		if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }

// Clear the deferred resetState if it hasn't executed yet, otherwise it
		// will interrupt the interaction and orphan a box element in the container.
		this._clearDeferredResetState();
		this._resetState();

DomUtil.disableTextSelection();
		DomUtil.disableImageDrag();

this._startPoint = this._map.mouseEventToContainerPoint(e);

DomEvent.on(document, {
			contextmenu: DomEvent.stop,
			mousemove: this._onMouseMove,
			mouseup: this._onMouseUp,
			keydown: this._onKeyDown
		}, this);
	},

_onMouseMove: function (e) {
		if (!this._moved) {
			this._moved = true;

this._box = DomUtil.create('div', 'leaflet-zoom-box', this._container);
			DomUtil.addClass(this._container, 'leaflet-crosshair');

this._map.fire('boxzoomstart');
		}

this._point = this._map.mouseEventToContainerPoint(e);

var bounds = new Bounds(this._point, this._startPoint),
		    size = bounds.getSize();

DomUtil.setPosition(this._box, bounds.min);

this._box.style.width  = size.x + 'px';
		this._box.style.height = size.y + 'px';
	},

_finish: function () {
		if (this._moved) {
			DomUtil.remove(this._box);
			DomUtil.removeClass(this._container, 'leaflet-crosshair');
		}

DomUtil.enableTextSelection();
		DomUtil.enableImageDrag();

DomEvent.off(document, {
			contextmenu: DomEvent.stop,
			mousemove: this._onMouseMove,
			mouseup: this._onMouseUp,
			keydown: this._onKeyDown
		}, this);
	},

_onMouseUp: function (e) {
		if ((e.which !== 1) && (e.button !== 1)) { return; }

this._finish();

if (!this._moved) { return; }
		// Postpone to next JS tick so internal click event handling
		// still see it as "moved".
		this._clearDeferredResetState();
		this._resetStateTimeout = setTimeout(Util.bind(this._resetState, this), 0);

var bounds = new LatLngBounds(
		        this._map.containerPointToLatLng(this._startPoint),
		        this._map.containerPointToLatLng(this._point));

this._map
			.fitBounds(bounds)
			.fire('boxzoomend', {boxZoomBounds: bounds});
	},

_onKeyDown: function (e) {
		if (e.keyCode === 27) {
			this._finish();
			this._clearDeferredResetState();
			this._resetState();
		}
	}
});

// @section Handlers
// @property boxZoom: Handler
// Box (shift-drag with mouse) zoom handler.
Map.addInitHook('addHandler', 'boxZoom', BoxZoom);

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