80 lines
2.1 KiB
JavaScript
80 lines
2.1 KiB
JavaScript
/**
|
|
* @module ol/control/ZoomToExtent
|
|
*/
|
|
import _ol_ from '../index.js';
|
|
import _ol_events_ from '../events.js';
|
|
import _ol_events_EventType_ from '../events/EventType.js';
|
|
import _ol_control_Control_ from '../control/Control.js';
|
|
import _ol_css_ from '../css.js';
|
|
|
|
/**
|
|
* @classdesc
|
|
* A button control which, when pressed, changes the map view to a specific
|
|
* extent. To style this control use the css selector `.ol-zoom-extent`.
|
|
*
|
|
* @constructor
|
|
* @extends {ol.control.Control}
|
|
* @param {olx.control.ZoomToExtentOptions=} opt_options Options.
|
|
* @api
|
|
*/
|
|
var _ol_control_ZoomToExtent_ = function(opt_options) {
|
|
var options = opt_options ? opt_options : {};
|
|
|
|
/**
|
|
* @type {ol.Extent}
|
|
* @protected
|
|
*/
|
|
this.extent = options.extent ? options.extent : null;
|
|
|
|
var className = options.className !== undefined ? options.className :
|
|
'ol-zoom-extent';
|
|
|
|
var label = options.label !== undefined ? options.label : 'E';
|
|
var tipLabel = options.tipLabel !== undefined ?
|
|
options.tipLabel : 'Fit to extent';
|
|
var button = document.createElement('button');
|
|
button.setAttribute('type', 'button');
|
|
button.title = tipLabel;
|
|
button.appendChild(
|
|
typeof label === 'string' ? document.createTextNode(label) : label
|
|
);
|
|
|
|
_ol_events_.listen(button, _ol_events_EventType_.CLICK,
|
|
this.handleClick_, this);
|
|
|
|
var cssClasses = className + ' ' + _ol_css_.CLASS_UNSELECTABLE + ' ' +
|
|
_ol_css_.CLASS_CONTROL;
|
|
var element = document.createElement('div');
|
|
element.className = cssClasses;
|
|
element.appendChild(button);
|
|
|
|
_ol_control_Control_.call(this, {
|
|
element: element,
|
|
target: options.target
|
|
});
|
|
};
|
|
|
|
_ol_.inherits(_ol_control_ZoomToExtent_, _ol_control_Control_);
|
|
|
|
|
|
/**
|
|
* @param {Event} event The event to handle
|
|
* @private
|
|
*/
|
|
_ol_control_ZoomToExtent_.prototype.handleClick_ = function(event) {
|
|
event.preventDefault();
|
|
this.handleZoomToExtent();
|
|
};
|
|
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
_ol_control_ZoomToExtent_.prototype.handleZoomToExtent = function() {
|
|
var map = this.getMap();
|
|
var view = map.getView();
|
|
var extent = !this.extent ? view.getProjection().getExtent() : this.extent;
|
|
view.fit(extent);
|
|
};
|
|
export default _ol_control_ZoomToExtent_;
|