69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
// FIXME works for View2D only
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goog.provide('ol.control.ZoomToExtent');
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goog.require('goog.dom');
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goog.require('goog.dom.TagName');
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goog.require('goog.events');
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goog.require('goog.events.EventType');
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goog.require('ol.control.Control');
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goog.require('ol.css');
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/**
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* Create a control that adds a button, which, when pressed, changes
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* the map view to a specific extent. To style this control use the
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* css selector `.ol-zoom-extent`.
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* @constructor
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* @extends {ol.control.Control}
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* @param {ol.control.ZoomToExtentOptions=} opt_options Options.
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* @todo stability experimental
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*/
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ol.control.ZoomToExtent = function(opt_options) {
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var options = goog.isDef(opt_options) ? opt_options : {};
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/**
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* @type {ol.Extent}
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* @private
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*/
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this.extent_ = goog.isDef(options.extent) ? options.extent : null;
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var className = goog.isDef(options.className) ? options.className :
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'ol-zoom-extent';
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var element = goog.dom.createDom(goog.dom.TagName.DIV, {
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'class': className + ' ' + ol.css.CLASS_UNSELECTABLE
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});
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var button = goog.dom.createDom(goog.dom.TagName.A, {
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'href': '#zoomExtent'
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});
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goog.dom.appendChild(element, button);
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goog.events.listen(element, [
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goog.events.EventType.TOUCHEND,
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goog.events.EventType.CLICK
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], this.handleZoomToExtent_, false, this);
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goog.base(this, {
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element: element,
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target: options.target
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});
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};
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goog.inherits(ol.control.ZoomToExtent, ol.control.Control);
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/**
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* @param {goog.events.BrowserEvent} browserEvent Browser event.
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* @private
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*/
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ol.control.ZoomToExtent.prototype.handleZoomToExtent_ = function(browserEvent) {
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// prevent #zoomExtent anchor from getting appended to the url
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browserEvent.preventDefault();
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var map = this.getMap();
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var view = map.getView().getView2D();
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var extent = goog.isNull(this.extent_) ?
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view.getProjection().getExtent() : this.extent_;
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view.fitExtent(extent, map.getSize());
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};
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