openstreetmap-website/app/assets/javascripts/index/query.js
Tom Hughes 0ff7a928e4 Fix query tool to get correct bounds for enclosing ways
The bounding box returned by overpass for geom output is only
the bounds for the clipped geometry, so fetch the geometry and
the bounding box separately and merge them client side.

Fixes #1156
2016-03-06 20:42:04 +00:00

356 lines
10 KiB
JavaScript

//= require jquery.simulate
OSM.Query = function(map) {
var protocol = document.location.protocol === "https:" ? "https:" : "http:",
url = protocol + OSM.OVERPASS_URL,
queryButton = $(".control-query .control-button"),
uninterestingTags = ['source', 'source_ref', 'source:ref', 'history', 'attribution', 'created_by', 'tiger:county', 'tiger:tlid', 'tiger:upload_uuid', 'KSJ2:curve_id', 'KSJ2:lat', 'KSJ2:lon', 'KSJ2:coordinate', 'KSJ2:filename', 'note:ja'],
marker;
var featureStyle = {
color: "#FF6200",
weight: 4,
opacity: 1,
fillOpacity: 0.5,
clickable: false
};
queryButton.on("click", function (e) {
e.preventDefault();
e.stopPropagation();
if (queryButton.hasClass("active")) {
disableQueryMode();
} else if (!queryButton.hasClass("disabled")) {
enableQueryMode();
}
}).on("disabled", function () {
if (queryButton.hasClass("active")) {
map.off("click", clickHandler);
$(map.getContainer()).removeClass("query-active").addClass("query-disabled");
$(this).tooltip("show");
}
}).on("enabled", function () {
if (queryButton.hasClass("active")) {
map.on("click", clickHandler);
$(map.getContainer()).removeClass("query-disabled").addClass("query-active");
$(this).tooltip("hide");
}
});
$("#sidebar_content")
.on("mouseover", ".query-results li.query-result", function () {
var geometry = $(this).data("geometry");
if (geometry) map.addLayer(geometry);
$(this).addClass("selected");
})
.on("mouseout", ".query-results li.query-result", function () {
var geometry = $(this).data("geometry");
if (geometry) map.removeLayer(geometry);
$(this).removeClass("selected");
})
.on("mousedown", ".query-results li.query-result", function () {
var moved = false;
$(this).one("click", function (e) {
if (!moved) {
var geometry = $(this).data("geometry");
if (geometry) map.removeLayer(geometry);
if (!$(e.target).is('a')) {
$(this).find("a").simulate("click", e);
}
}
}).one("mousemove", function () {
moved = true;
});
});
function interestingFeature(feature) {
if (feature.tags) {
for (var key in feature.tags) {
if (uninterestingTags.indexOf(key) < 0) {
return true;
}
}
}
return false;
}
function featurePrefix(feature) {
var tags = feature.tags;
var prefix = "";
if (tags.boundary === "administrative" && tags.admin_level) {
prefix = I18n.t("geocoder.search_osm_nominatim.admin_levels.level" + tags.admin_level, {
defaultValue: I18n.t("geocoder.search_osm_nominatim.prefix.boundary.administrative")
});
} else {
var prefixes = I18n.t("geocoder.search_osm_nominatim.prefix");
var key, value;
for (key in tags) {
value = tags[key];
if (prefixes[key]) {
if (prefixes[key][value]) {
return prefixes[key][value];
}
}
}
for (key in tags) {
value = tags[key];
if (prefixes[key]) {
var first = value.substr(0, 1).toUpperCase(),
rest = value.substr(1).replace(/_/g, " ");
return first + rest;
}
}
}
if (!prefix) {
prefix = I18n.t("javascripts.query." + feature.type);
}
return prefix;
}
function featureName(feature) {
var tags = feature.tags,
locales = I18n.locales.get();
for (var i = 0; i < locales.length; i++) {
if (tags["name:" + locales[i]]) {
return tags["name:" + locales[i]];
}
}
if (tags.name) {
return tags.name;
} else if (tags.ref) {
return tags.ref;
} else if (tags["addr:housename"]) {
return tags["addr:housename"];
} else if (tags["addr:housenumber"] && tags["addr:street"]) {
return tags["addr:housenumber"] + " " + tags["addr:street"];
} else {
return "#" + feature.id;
}
}
function featureGeometry(feature) {
var geometry;
if (feature.type === "node" && feature.lat && feature.lon) {
geometry = L.circleMarker([feature.lat, feature.lon], featureStyle);
} else if (feature.type === "way" && feature.geometry) {
geometry = L.polyline(feature.geometry.filter(function (point) {
return point !== null;
}).map(function (point) {
return [point.lat, point.lon];
}), featureStyle);
} else if (feature.type === "relation" && feature.members) {
geometry = L.featureGroup(feature.members.map(featureGeometry).filter(function (geometry) {
return geometry !== undefined;
}));
}
return geometry;
}
function runQuery(latlng, radius, query, $section, merge, compare) {
var $ul = $section.find("ul");
$ul.empty();
$section.show();
$section.find(".loader").oneTime(1000, "loading", function () {
$(this).show();
});
if ($section.data("ajax")) {
$section.data("ajax").abort();
}
$section.data("ajax", $.ajax({
url: url,
method: "POST",
data: {
data: "[timeout:5][out:json];" + query,
},
success: function(results) {
var elements;
$section.find(".loader").stopTime("loading").hide();
if (merge) {
elements = results.elements.reduce(function (hash, element) {
var key = element.type + element.id;
hash[key] = $.extend({}, hash[key], element);
return hash;
}, {});
elements = Object.keys(elements).map(function (key) {
return elements[key];
});
} else {
elements = results.elements;
}
if (compare) {
elements = elements.sort(compare);
}
for (var i = 0; i < elements.length; i++) {
var element = elements[i];
if (interestingFeature(element)) {
var $li = $("<li>")
.addClass("query-result")
.data("geometry", featureGeometry(element))
.appendTo($ul);
var $p = $("<p>")
.text(featurePrefix(element) + " ")
.appendTo($li);
$("<a>")
.attr("href", "/" + element.type + "/" + element.id)
.text(featureName(element))
.appendTo($p);
}
}
if ($ul.find("li").length === 0) {
$("<li>")
.text(I18n.t("javascripts.query.nothing_found"))
.appendTo($ul);
}
},
error: function(xhr, status, error) {
$section.find(".loader").stopTime("loading").hide();
$("<li>")
.text(I18n.t("javascripts.query." + status, { server: url, error: error }))
.appendTo($ul);
}
}));
}
function compareSize(feature1, feature2) {
var width1 = feature1.bounds.maxlon - feature1.bounds.minlon,
height1 = feature1.bounds.maxlat - feature1.bounds.minlat,
area1 = width1 * height1,
width2 = feature2.bounds.maxlat - feature2.bounds.minlat,
height2 = feature2.bounds.maxlat - feature2.bounds.minlat,
area2 = width2 * height2;
return area1 - area2;
}
/*
* To find nearby objects we ask overpass for the union of the
* following sets:
*
* node(around:<radius>,<lat>,lng>)
* way(around:<radius>,<lat>,lng>)
* relation(around:<radius>,<lat>,lng>)
*
* to find enclosing objects we first find all the enclosing areas:
*
* is_in(<lat>,<lng>)->.a
*
* and then return the union of the following sets:
*
* relation(pivot.a)
* way(pivot.a)
*
* In both cases we then ask to retrieve tags and the geometry
* for each object.
*/
function queryOverpass(lat, lng) {
var latlng = L.latLng(lat, lng).wrap(),
bounds = map.getBounds().wrap(),
bbox = bounds.getSouth() + "," + bounds.getWest() + "," + bounds.getNorth() + "," + bounds.getEast(),
radius = 10 * Math.pow(1.5, 19 - map.getZoom()),
around = "around:" + radius + "," + lat + "," + lng,
nodes = "node(" + around + ")",
ways = "way(" + around + ")",
relations = "relation(" + around + ")",
nearby = "(" + nodes + ";" + ways + ");out tags geom(" + bbox + ");" + relations + ";out geom(" + bbox + ");",
isin = "is_in(" + lat + "," + lng + ")->.a;way(pivot.a);out tags bb;out ids geom(" + bbox + ");relation(pivot.a);out tags bb;";
$("#sidebar_content .query-intro")
.hide();
if (marker) map.removeLayer(marker);
marker = L.circle(latlng, radius, featureStyle).addTo(map);
$(document).everyTime(75, "fadeQueryMarker", function (i) {
if (i === 10) {
map.removeLayer(marker);
} else {
marker.setStyle({
opacity: 1 - i * 0.1,
fillOpacity: 0.5 - i * 0.05
});
}
}, 10);
runQuery(latlng, radius, nearby, $("#query-nearby"), false);
runQuery(latlng, radius, isin, $("#query-isin"), true, compareSize);
}
function clickHandler(e) {
var precision = OSM.zoomPrecision(map.getZoom()),
latlng = e.latlng.wrap(),
lat = latlng.lat.toFixed(precision),
lng = latlng.lng.toFixed(precision);
OSM.router.route("/query?lat=" + lat + "&lon=" + lng);
}
function enableQueryMode() {
queryButton.addClass("active");
map.on("click", clickHandler);
$(map.getContainer()).addClass("query-active");
}
function disableQueryMode() {
if (marker) map.removeLayer(marker);
$(map.getContainer()).removeClass("query-active").removeClass("query-disabled");
map.off("click", clickHandler);
queryButton.removeClass("active");
}
var page = {};
page.pushstate = page.popstate = function(path) {
OSM.loadSidebarContent(path, function () {
page.load(path, true);
});
};
page.load = function(path, noCentre) {
var params = querystring.parse(path.substring(path.indexOf('?') + 1)),
latlng = L.latLng(params.lat, params.lon);
if (!window.location.hash && !noCentre && !map.getBounds().contains(latlng)) {
OSM.router.withoutMoveListener(function () {
map.setView(latlng, 15);
});
}
queryOverpass(params.lat, params.lon);
};
page.unload = function(sameController) {
if (!sameController) {
disableQueryMode();
}
};
return page;
};