76 lines
1.8 KiB
JavaScript
76 lines
1.8 KiB
JavaScript
OSM.Export = function(map) {
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var page = {};
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var locationFilter = new L.LocationFilter({
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enableButton: false,
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adjustButton: false
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}).on("change", update);
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function getBounds() {
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return L.latLngBounds(
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L.latLng($("#minlat").val(), $("#minlon").val()),
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L.latLng($("#maxlat").val(), $("#maxlon").val()));
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}
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function boundsChanged() {
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var bounds = getBounds();
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map.fitBounds(bounds);
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locationFilter.setBounds(bounds);
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enableFilter();
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validateControls();
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}
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function enableFilter() {
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if (!locationFilter.getBounds().isValid()) {
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locationFilter.setBounds(map.getBounds().pad(-0.2));
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}
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$("#drag_box").hide();
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locationFilter.enable();
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}
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function update() {
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setBounds(locationFilter.isEnabled() ? locationFilter.getBounds() : map.getBounds());
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validateControls();
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}
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function setBounds(bounds) {
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var precision = zoomPrecision(map.getZoom());
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$("#minlon").val(bounds.getWest().toFixed(precision));
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$("#minlat").val(bounds.getSouth().toFixed(precision));
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$("#maxlon").val(bounds.getEast().toFixed(precision));
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$("#maxlat").val(bounds.getNorth().toFixed(precision));
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}
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function validateControls() {
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$("#export_osm_too_large").toggle(getBounds().getSize() > OSM.MAX_REQUEST_AREA);
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}
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page.pushstate = page.popstate = function(path) {
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$("#export_tab").addClass("current");
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$('#sidebar_content').load(path, page.load);
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};
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page.load = function() {
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map
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.addLayer(locationFilter)
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.on("moveend", update);
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$("#maxlat, #minlon, #maxlon, #minlat").change(boundsChanged);
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$("#drag_box").click(enableFilter);
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update();
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};
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page.unload = function() {
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map
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.removeLayer(locationFilter)
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.off("moveend", update);
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$("#export_tab").removeClass("current");
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};
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return page;
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};
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