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Popup.js
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Popup.js
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/*
* @class Popup
* @inherits DivOverlay
* @aka L.Popup
* Used to open popups in certain places of the map. Use [Map.openPopup](#map-openpopup) to
* open popups while making sure that only one popup is open at one time
* (recommended for usability), or use [Map.addLayer](#map-addlayer) to open as many as you want.
*
* @example
*
* If you want to just bind a popup to marker click and then open it, it's really easy:
*
* ```js
* marker.bindPopup(popupContent).openPopup();
* ```
* Path overlays like polylines also have a `bindPopup` method.
* Here's a more complicated way to open a popup on a map:
*
* ```js
* var popup = L.popup()
* .setLatLng(latlng)
* .setContent('<p>Hello world!<br />This is a nice popup.</p>')
* .openOn(map);
* ```
*/
// @namespace Popup
L.Popup = L.DivOverlay.extend({
// @section
// @aka Popup options
options: {
// @option maxWidth: Number = 300
// Max width of the popup, in pixels.
maxWidth: 300,
// @option minWidth: Number = 50
// Min width of the popup, in pixels.
minWidth: 50,
// @option maxHeight: Number = null
// If set, creates a scrollable container of the given height
// inside a popup if its content exceeds it.
maxHeight: null,
// @option autoPan: Boolean = true
// Set it to `false` if you don't want the map to do panning animation
// to fit the opened popup.
autoPan: true,
// @option autoPanPaddingTopLeft: Point = null
// The margin between the popup and the top left corner of the map
// view after autopanning was performed.
autoPanPaddingTopLeft: null,
// @option autoPanPaddingBottomRight: Point = null
// The margin between the popup and the bottom right corner of the map
// view after autopanning was performed.
autoPanPaddingBottomRight: null,
// @option autoPanPadding: Point = Point(5, 5)
// Equivalent of setting both top left and bottom right autopan padding to the same value.
autoPanPadding: [5, 5],
// @option keepInView: Boolean = false
// Set it to `true` if you want to prevent users from panning the popup
// off of the screen while it is open.
keepInView: false,
// @option closeButton: Boolean = true
// Controls the presence of a close button in the popup.
closeButton: true,
// @option autoClose: Boolean = true
// Set it to `false` if you want to override the default behavior of
// the popup closing when user clicks the map (set globally by
// the Map's [closePopupOnClick](#map-closepopuponclick) option).
autoClose: true
},
// @namespace Popup
// @method openOn(map: Map): this
// Adds the popup to the map and closes the previous one. The same as `map.openPopup(popup)`.
openOn: function (map) {
map.openPopup(this);
return this;
},
onAdd: function (map) {
L.DivOverlay.prototype.onAdd.call(this, map);
// @namespace Map
// @section Popup events
// @event popupopen: PopupEvent
// Fired when a popup is opened in the map
map.fire('popupopen', {popup: this});
if (this._source) {
// @namespace Layer
// @section Popup events
// @event popupopen: PopupEvent
// Fired when a popup bound to this layer is opened
this._source.fire('popupopen', {popup: this}, true);
this._source.on('preclick', L.DomEvent.stopPropagation);
}
},
onRemove: function (map) {
L.DivOverlay.prototype.onRemove.call(this, map);
// @namespace Map
// @section Popup events
// @event popupclose: PopupEvent
// Fired when a popup in the map is closed
map.fire('popupclose', {popup: this});
if (this._source) {
// @namespace Layer
// @section Popup events
// @event popupclose: PopupEvent
// Fired when a popup bound to this layer is closed
this._source.fire('popupclose', {popup: this}, true);
this._source.off('preclick', L.DomEvent.stopPropagation);
}
},
getEvents: function () {
var events = L.DivOverlay.prototype.getEvents.call(this);
if ('closeOnClick' in this.options ? this.options.closeOnClick : this._map.options.closePopupOnClick) {
events.preclick = this._close;
}
if (this.options.keepInView) {
events.moveend = this._adjustPan;
}
return events;
},
_close: function () {
if (this._map) {
this._map.closePopup(this);
}
},
_initLayout: function () {
var prefix = 'leaflet-popup',
container = this._container = L.DomUtil.create('div',
prefix + ' ' + (this.options.className || '') +
' leaflet-zoom-' + (this._zoomAnimated ? 'animated' : 'hide'));
if (this.options.closeButton) {
var closeButton = this._closeButton = L.DomUtil.create('a', prefix + '-close-button', container);
closeButton.href = '#close';
closeButton.innerHTML = '×';
L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
}
var wrapper = this._wrapper = L.DomUtil.create('div', prefix + '-content-wrapper', container);
this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
L.DomEvent
.disableClickPropagation(wrapper)
.disableScrollPropagation(this._contentNode)
.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
},
_updateLayout: function () {
var container = this._contentNode,
style = container.style;
style.width = '';
style.whiteSpace = 'nowrap';
var width = container.offsetWidth;
width = Math.min(width, this.options.maxWidth);
width = Math.max(width, this.options.minWidth);
style.width = (width + 1) + 'px';
style.whiteSpace = '';
style.height = '';
var height = container.offsetHeight,
maxHeight = this.options.maxHeight,
scrolledClass = 'leaflet-popup-scrolled';
if (maxHeight && height > maxHeight) {
style.height = maxHeight + 'px';
L.DomUtil.addClass(container, scrolledClass);
} else {
L.DomUtil.removeClass(container, scrolledClass);
}
this._containerWidth = this._container.offsetWidth;
},
_animateZoom: function (e) {
var pos = this._map._latLngToNewLayerPoint(this._latlng, e.zoom, e.center),
anchor = this._getAnchor();
L.DomUtil.setPosition(this._container, pos.add(anchor));
},
_adjustPan: function () {
if (!this.options.autoPan || (this._map._panAnim && this._map._panAnim._inProgress)) { return; }
var map = this._map,
containerHeight = this._container.offsetHeight,
containerWidth = this._containerWidth,
layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
if (this._zoomAnimated) {
layerPos._add(L.DomUtil.getPosition(this._container));
}
var containerPos = map.layerPointToContainerPoint(layerPos),
padding = L.point(this.options.autoPanPadding),
paddingTL = L.point(this.options.autoPanPaddingTopLeft || padding),
paddingBR = L.point(this.options.autoPanPaddingBottomRight || padding),
size = map.getSize(),
dx = 0,
dy = 0;
if (containerPos.x + containerWidth + paddingBR.x > size.x) { // right
dx = containerPos.x + containerWidth - size.x + paddingBR.x;
}
if (containerPos.x - dx - paddingTL.x < 0) { // left
dx = containerPos.x - paddingTL.x;
}
if (containerPos.y + containerHeight + paddingBR.y > size.y) { // bottom
dy = containerPos.y + containerHeight - size.y + paddingBR.y;
}
if (containerPos.y - dy - paddingTL.y < 0) { // top
dy = containerPos.y - paddingTL.y;
}
// @namespace Map
// @section Popup events
// @event autopanstart: Event
// Fired when the map starts autopanning when opening a popup.
if (dx || dy) {
map
.fire('autopanstart')
.panBy([dx, dy]);
}
},
_onCloseButtonClick: function (e) {
this._close();
L.DomEvent.stop(e);
},
_getAnchor: function () {
// Where should we anchor the popup on the source layer?
return L.point(this._source && this._source._getPopupAnchor ? this._source._getPopupAnchor() : [0, 0]);
}
});
// @namespace Popup
// @factory L.popup(options?: Popup options, source?: Layer)
// Instantiates a `Popup` object given an optional `options` object that describes its appearance and location and an optional `source` object that is used to tag the popup with a reference to the Layer to which it refers.
L.popup = function (options, source) {
return new L.Popup(options, source);
};
// @namespace Map
// @section Methods for Layers and Controls
L.Map.include({
// @method openPopup(popup: Popup): this
// Opens the specified popup while closing the previously opened (to make sure only one is opened at one time for usability).
// @alternative
// @method openPopup(content: String|HTMLElement, latlng: LatLng, options?: Popup options): this
// Creates a popup with the specified content and options and opens it in the given point on a map.
openPopup: function (popup, latlng, options) {
if (!(popup instanceof L.Popup)) {
popup = new L.Popup(options).setContent(popup);
}
if (latlng) {
popup.setLatLng(latlng);
}
if (this.hasLayer(popup)) {
return this;
}
if (this._popup && this._popup.options.autoClose) {
this.closePopup();
}
this._popup = popup;
return this.addLayer(popup);
},
// @method closePopup(popup?: Popup): this
// Closes the popup previously opened with [openPopup](#map-openpopup) (or the given one).
closePopup: function (popup) {
if (!popup || popup === this._popup) {
popup = this._popup;
this._popup = null;
}
if (popup) {
this.removeLayer(popup);
}
return this;
}
});