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Code Issues Projects Releases Wiki Activity

Refactor visualization into separate class

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Arne Schlüter 2015-02-08 10:44:10 +01:00
commit a2b6e437d4
4 changed files with 138 additions and 92 deletions
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92
static/js/main.js
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@ -1,92 +1,26 @@
'use strict';
import $ from 'jquery';
import filter from './filter';
import colorUtils from './colors';
import Visualization from './visualization'
// http://www.colourlovers.com/palette/1811244/1001_Stories
var colors = [ '#F8B195', '#F67280', '#C06C84', '#6C5B7B', '#355C7D' ];
var colors = [ '#F8B195', '#F67280', '#C06C84', '#6C5B7B', '#355C7D' ]
// set up background map
var map = L.map('map').setView([52.50, 13.40], 11);
var layer = new L.StamenTileLayer('toner-lite');
map.addLayer(layer);
var map = L.map('map').setView([52.50, 13.40], 11)
var layer = new L.StamenTileLayer('toner-lite')
map.addLayer(layer)
// restrict viewable area
map.setMaxBounds(map.getBounds());
map.options.minZoom = map.getZoom();
map.setMaxBounds(map.getBounds())
map.options.minZoom = map.getZoom()
// get response from server and draw the map
var response;
var visualization
$.getJSON('/articles/')
.fail(console.error.bind(console))
.then(function (data) {
console.log('Got data successfully!');
response = data;
.then(function (response) {
console.log('Got data successfully!')
visualization = new Visualization(map, response, colors)
displayMarkers(response);
visualization.displayMarkers()
visualization.setupCategoryFilter('.category-filter')
});
// event handling / user interaction
var $categoryList = $('.category-filter');
function getActiveCategories ($li) {
var activeCategories = [];
$categoryList.children().each(function () {
var $li = $(this);
if ($li.hasClass('active'))
activeCategories.push($li[0].classList[0])
});
return activeCategories;
}
$categoryList.on('click', 'a', function (e) {
$(this).parent().toggleClass('active');
var categories = getActiveCategories();
var incidents = filter.categories(reponse, categories);
displayMarkers(incidents);
e.preventDefault();
e.stopPropagation();
return false;
})
// logic for drawing follows
var markers = [];
function createMarker (data) {
var options = { color: pickColor(data) };
var marker = L.circleMarker([data.lat, data.lng], options).addTo(map);
return marker;
}
function pickColor (incident) {
var categories = ['racism', 'antisemitism', 'sexism', 'homophobia'].map(function (category, index) {
if (incident.categories.indexOf(category) !== -1)
return index;
}).filter(function (value) {
return value != null
});
var categoryColors = colors.filter(function (color, index) {
return categories.indexOf(index) !== -1;
});
return incident.categories.length ? colorUtils.mix(categoryColors) : colors[4];
}
/**
* Clear the map and render new markers
* @param {Array[Object]} incidents The incidents to be shown
*/
function displayMarkers (incidents) {
markers.forEach(function (marker) {
map.removeLayer(marker);
});
markers = [];
incidents.forEach(function (incident) {
markers.push(createMarker(incident).bindPopup(incident.description));
});
}