522 lines
No EOL
22 KiB
JavaScript
522 lines
No EOL
22 KiB
JavaScript
/*
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...
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*/
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'use strict';
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/*
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Since we will be doing some mapping, we have to load the Geo module.
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*/
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Ox.load({UI: {showScreen: true}, Geo: {}}, function() {
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Ox.getJSON('json/cities.json', function(cities) {
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/*
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The JSON data originally comes from geonames.org. It's an array of
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10,000 city objects, each of which has the following properties:
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<pre>
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{
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"country_code": "CN",
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"elevation": 0,
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"feature_code": "PPLA",
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"latitude": 31.22222,
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"longitude": 121.45806,
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"name": "Shanghai",
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"population": 14608512
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}
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</pre>
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*/
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cities = cities.map(function(data, id) {
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/*
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First of all, we have to patch this data, so that it becomes more useful
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both for the list and the map. Ox.getCountryByCode gives us the names of
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the country, region and continent. For the map, we need a geoname, and
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the cities have to be rectangular areas, not just points. So we set the
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area to 100 square meters per inhabitant, which will turn out to be
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relatively realistic. Then we calculate how large the resulting square
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will be, in degrees. (The number of degrees from west to east depends on
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the city's proximity to the equator. OxJS has some utility functions
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built in that make this easy to compute.) Finally, we can set the values
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for south, north, west and east. A nice side effect of deriving the size
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of the city from its population is that the map, which will always show
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the largest places in the visible area, will now show the most populated
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cities.
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*/
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var area = Math.max(data.population, 1) * 100,
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country = Ox.getCountryByCode(data.country_code),
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latSize = Math.sqrt(area) / Ox.EARTH_CIRCUMFERENCE * 360,
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lngSize = Math.sqrt(area) * Ox.getDegreesPerMeter(data.latitude);
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/*
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Our city object will look like this:<pre>
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{
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"area": 1460851200,
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"capital": false,
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"country": "China",
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"east": 121.65880869475835,
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"elevation": 0,
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"geoname": "Shanghai, China",
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"id": "0",
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"lat": 31.22222,
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"lng": 121.45806,
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"name": "Shanghai",
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"north": 31.393892916013158,
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"population": 14608512,
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"region": "Asia, Eastern Asia, China",
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"south": 31.050547083986842,
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"west": 121.25731130524166
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}</pre>
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Obviously, in a real-world scenario, you would make sure that the
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data already comes in this form.
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*/
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return {
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area: area,
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capital: data.feature_code == 'PPLC',
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country: country.name,
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east: data.longitude + lngSize / 2,
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elevation: data.elevation,
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geoname: [data.name, country.name].join(', '),
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id: id.toString(),
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lat: data.latitude,
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lng: data.longitude,
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name: data.name,
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north: data.latitude + latSize / 2,
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population: data.population,
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region: [country.continent, country.region, country.name].join(', '),
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south: data.latitude - latSize / 2,
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west: data.longitude - lngSize / 2
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};
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/**/
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});
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/*
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Ox.print(
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JSON.stringify(
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cities.sort(function(a, b) {
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return a.country + ', ' + a.name < b.country + ', ' + b.name ? -1
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: a.country + ', ' + a.name > b.country + ', ' + b.name ? 1 : 0
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}).map(function(city) {
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return city.name + ', ' + city.country
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})
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)
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);
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*/
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var listAPI = Ox.api(cities, {
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cache: true,
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sort: ['-population', '+name'],
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sums: ['population']
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}),
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$preview = Ox.Button({
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disabled: true,
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selectable: true,
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title: 'view',
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type: 'image'
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})
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.bindEvent({
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change: function(data) {
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$list[(data.value ? 'open' : 'close') + 'Preview']();
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}
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}),
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/*
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As we want the list to be searchable, we add an input element.
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*/
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$find = Ox.Input({
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clear: true,
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placeholder: 'Find',
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width: 192
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})
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.bindEvent({
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submit: function(data) {
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listAPI({
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keys: [],
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query: {
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conditions: data.value ? [
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{
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key: 'name',
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operator: '=',
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value: data.value
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},
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{
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key: 'region',
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operator: '=',
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value: data.value
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}
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] : [],
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operator: '|'
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}
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}, function(result) {
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$list.options({items: result.data.items});
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});
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}
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}),
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$toolbar = Ox.Bar({size: 24})
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.attr({id: 'toolbar'})
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.append($preview)
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.append($find),
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$list = Ox.TextList({
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columns: [
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{
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/*
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We don't want to display the id, so we omit the
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visible attribute, which defaults to false. We still
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have to include the id here, since is the unique key
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of our table. In consequence, whenever the list
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fires a select event, it will reference this value
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as the item's id.
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*/
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id: 'id',
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operator: '+',
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title: 'ID',
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unique: true,
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width: 80
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},
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{
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/*
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We use the format function to display the region as
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a colored icon with a tooltip. The OxTypeIcon class
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makes the icon themed (its border color will depend
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on the current theme), the region class is added to
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apply our own custom CSS, and Ox.getGeoColor returns
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a color for the region. Note that the actual value
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is 'Continent, Region, Country', which results in a
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nicer sort order than just 'Region'.
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*/
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format: function(value) {
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var region = value.split(', ')[1];
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return Ox.Element({
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tooltip: region
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})
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.addClass('OxTypeIcon region')
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.css({
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background: 'rgb('
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+ Ox.getGeoColor(region).join(', ')
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+ ')'
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});
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},
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id: 'region',
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/*
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The operator indicates that we want the default sort
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order for this column to be ascending.
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*/
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operator: '+',
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/*
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We want the column title to be a symbol, so we pass
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the 'icon' symbol at a titleImage. We can pick
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anything from the collection of symbols that comes
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with Ox.UI. The column still needs a textual title,
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to be displayed in the menu that allows to show or
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hide specific columns.
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*/
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title: 'Region',
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titleImage: 'icon',
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/**/
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visible: true,
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width: 16
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},
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{
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/*
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Ox.getFlagByGeoname and Ox.getFlagByCountryCode
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return pretty flag icons.
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*/
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format: function(value) {
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return Ox.Element({
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element: '<img>',
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tooltip: value
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})
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.addClass('flag')
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.attr({
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src: Ox.getFlagByGeoname(value)
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})
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},
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id: 'country',
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operator: '+',
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title: 'Country',
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titleImage: 'flag',
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visible: true,
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width: 16
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},
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{
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format: function(value) {
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return value
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? $('<img>')
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.addClass('capital')
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.attr({
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src: Ox.UI.getImageURL('symbolStar')
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})
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: '';
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},
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id: 'capital',
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operator: '-',
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title: 'Capital',
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titleImage: 'star',
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visible: true,
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width: 16
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},
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{
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/*
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The format function has a second argument that
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contains the values of all columns. This allows us
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to format a value dependent on other values. In this
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case, we want to display the name in bold if the
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value for capital is true.
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*/
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format: function(value, data) {
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return data.capital
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? '<b>' + value + '</b>'
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: value;
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},
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id: 'name',
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operator: '+',
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/*
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As it wouldn't make much sense to display the list
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without the name column, we make it non-removable.
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*/
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removable: false,
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title: 'Name',
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visible: true,
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width: 128
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},
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{
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/*
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Since the following values are numbers, they should
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be right-aligned. Also, we use some of the built-in
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format functions.
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*/
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align: 'right',
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format: function(value) {
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return Ox.formatNumber(value);
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},
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id: 'population',
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operator: '-',
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title: 'Population',
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visible: true,
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width: 80
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},
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{
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format: function(value) {
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return Ox.formatDegrees(value, 'lat');
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},
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align: 'right',
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id: 'lat',
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operator: '-',
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title: 'Latitude',
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visible: true,
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width: 80
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},
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{
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format: function(value) {
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return Ox.formatDegrees(value, 'lng');
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},
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align: 'right',
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id: 'lng',
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operator: '+',
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title: 'Longitude',
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visible: true,
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width: 80
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},
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{
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format: function(value) {
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return Ox.formatNumber(value) + ' m';
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},
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align: 'right',
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id: 'elevation',
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operator: '-',
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title: 'Elevation',
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width: 80
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}
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],
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/*
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This allows the user to move the columns around
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*/
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columnsMovable: true,
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/*
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This enables the UI to show or hide specific columns
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*/
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columnsRemovable: true,
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/*
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This makes sure the column titles get displayed
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*/
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columnsVisible: true,
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items: cities,
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/*
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FIXME: Actually, 'keys' doesn't make so much sense when the
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API is local, since the list has been passed all data anyway
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*/
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keys: ['capital'],
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max: 1,
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scrollbarVisible: true,
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/*
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We have to specify the default sort order.
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*/
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sort: ['-population', '+name'],
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sums: ['population']
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})
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.bindEvent({
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closepreview: function() {
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$preview.options({value: false});
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$dialog.close();
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},
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init: function(data) {
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$status.html(
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(data.items ? Ox.formatNumber(data.items) : 'No')
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+ ' Cit' + (data.items == 1 ? 'y' : 'ies')
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+ ', Populaion: ' + (
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data.population
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? Ox.formatNumber(data.population)
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: 'None'
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)
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);
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},
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open: function(data) {
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$map.zoomToPlace();
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},
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openpreview: function(data) {
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var item = Ox.getObjectById(cities, data.ids[0]);
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$flagImage = $('<img>')
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.attr({
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src: Ox.getFlagByGeoname(item.country, 256)
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});
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$mapImage = Ox.MapImage({
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height: 256,
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markers: [item],
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place: Ox.getCountryByGeoname(item.country),
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width: 256
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});
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setImageSizes();
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$preview.options({value: true});
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$dialog.options({
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content: $content = Ox.Element()
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.attr({id: 'content'})
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.append($flagImage)
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.append($mapImage),
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title: [item.name, item.country].join(', ')
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}).open();
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},
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select: function(data) {
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$preview.options({disabled: data.ids.length == 0});
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$map.options({selected: data.ids[0]}).panToPlace();
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}
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}),
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$flagImage,
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$mapImage,
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$content = Ox.Element(),
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$dialog = Ox.Dialog({
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closeButton: true,
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content: $content,
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fixedRatio: true,
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focus: false,
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height: 288,
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maximizeButton: true,
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maxHeight: 432,
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maxWidth: 864,
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minHeight: 144,
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minWidth: 384,
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width: 576
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})
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.bindEvent({
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close: function() {
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$list.closePreview();
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},
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resize: function(data) {
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$content.css({height: data.height - 16 + 'px'})
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setImageSizes();
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}
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}),
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$status = $('<div>').css({
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margin: '3px',
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fontSize: '9px',
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textAlign: 'center'
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}),
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$statusbar = Ox.Bar({size: 16}).append($status),
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$map = Ox.Map({
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clickable: true,
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keys: ['population'],
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markerColor: function(place) {
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return place.population === void 0 ? [128, 128, 128]
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: place.population >= 10000000 ? [255, 0, 0]
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: place.population >= 5000000 ? [255, 32, 0]
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: place.population >= 2000000 ? [255, 64, 0]
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: place.population >= 1000000 ? [255, 96, 0]
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: place.population >= 500000 ? [255, 128, 0]
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: place.population >= 200000 ? [255, 160, 0]
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: place.population >= 100000 ? [255, 192, 0]
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: place.population >= 50000 ? [255, 224, 0]
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: [255, 255, 0];
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},
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markerSize: function(place) {
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return place.population === void 0 ? 16
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: place.population >= 10000000 ? 24
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: place.population >= 5000000 ? 22
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: place.population >= 2000000 ? 20
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: place.population >= 1000000 ? 18
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: place.population >= 500000 ? 16
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: place.population >= 200000 ? 14
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: place.population >= 100000 ? 12
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: place.population >= 50000 ? 10
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: 8;
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},
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places: cities,
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showControls: true,
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showToolbar: true,
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showZoombar: true
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})
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.bindEvent({
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select: function(data) {
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$list.options({
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selected: data.place ? [data.place.id] : []
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});
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}
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}),
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$listPanel = Ox.SplitPanel({
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elements: [
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{element: $toolbar, size: 24},
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{element: $list},
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{element: $statusbar, size: 16}
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],
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orientation: 'vertical'
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}),
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$mainPanel = Ox.SplitPanel({
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elements: [
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{
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element: $listPanel.bindEvent({
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resize: function(data) {
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$find.options({
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width: data.size < 220
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? data.size - 28
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: 192
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});
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}
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}),
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resizable: true,
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resize: [176, 256, 336, 416, 496].map(function(size) {
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return size + Ox.UI.SCROLLBAR_SIZE;
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}),
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size: 416 + Ox.UI.SCROLLBAR_SIZE
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},
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{
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element: $map.bindEvent({
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resizeend: function(data) {
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$map.resizeMap();
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}
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})
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}
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],
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orientation: 'horizontal'
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})
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.appendTo(Ox.$body);
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function setImageSizes() {
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var size = Math.floor(($dialog.options('width') - 64) / 2);
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[$flagImage, $mapImage].forEach(function($image) {
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$image.css({width: size + 'px', height: size + 'px'});
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});
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}
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Ox.$window.bind({
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resize: function() {
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$map.resizeMap();
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}
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});
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});
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}); |