/
Control.LayersSpec.js
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Control.LayersSpec.js
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describe("Control.Layers", function () {
var map;
beforeEach(function () {
map = L.map(document.createElement('div'));
});
afterEach(function () {
map.remove();
});
describe("baselayerchange event", function () {
beforeEach(function () {
map.setView([0, 0], 14);
});
it("is fired on input that changes the base layer", function () {
var baseLayers = {"Layer 1": L.tileLayer(''), "Layer 2": L.tileLayer('')},
layers = L.control.layers(baseLayers).addTo(map),
spy = sinon.spy();
map.on('baselayerchange', spy);
happen.click(layers._baseLayersList.getElementsByTagName("input")[0]);
expect(spy.called).to.be.ok();
expect(spy.args[0][0].name).to.be("Layer 1");
expect(spy.args[0][0].layer).to.be(baseLayers["Layer 1"]);
happen.click(layers._baseLayersList.getElementsByTagName("input")[1]);
expect(spy.calledTwice).to.be.ok();
expect(spy.args[1][0].name).to.be("Layer 2");
expect(spy.args[1][0].layer).to.be(baseLayers["Layer 2"]);
});
it("works after removing and readding the Control.Layers to the map", function () {
var baseLayers = {"Layer 1": L.tileLayer(''), "Layer 2": L.tileLayer('')},
layers = L.control.layers(baseLayers).addTo(map),
spy = sinon.spy();
map.on('baselayerchange', spy);
map.removeControl(layers);
map.addControl(layers);
happen.click(layers._baseLayersList.getElementsByTagName("input")[0]);
expect(spy.called).to.be.ok();
expect(spy.args[0][0].name).to.be("Layer 1");
expect(spy.args[0][0].layer).to.be(baseLayers["Layer 1"]);
happen.click(layers._baseLayersList.getElementsByTagName("input")[1]);
expect(spy.calledTwice).to.be.ok();
expect(spy.args[1][0].name).to.be("Layer 2");
expect(spy.args[1][0].layer).to.be(baseLayers["Layer 2"]);
});
it("is not fired on input that doesn't change the base layer", function () {
var overlays = {"Marker 1": L.marker([0, 0]), "Marker 2": L.marker([0, 0])},
layers = L.control.layers({}, overlays).addTo(map),
spy = sinon.spy();
map.on('baselayerchange', spy);
happen.click(layers._overlaysList.getElementsByTagName("input")[0]);
expect(spy.called).to.not.be.ok();
});
});
describe("updates", function () {
beforeEach(function () {
map.setView([0, 0], 14);
});
it("when an included layer is added or removed from the map", function () {
var baseLayer = L.tileLayer(),
overlay = L.marker([0, 0]),
layers = L.control.layers({"Base": baseLayer}, {"Overlay": overlay}).addTo(map);
var spy = sinon.spy(layers, '_update');
map.addLayer(overlay);
map.removeLayer(overlay);
expect(spy.called).to.be.ok();
expect(spy.callCount).to.eql(2);
});
it("when an included layer is added or removed from the map, it's (un)checked", function () {
document.body.appendChild(map._container);
var baseLayer = L.tileLayer(),
overlay = L.marker([0, 0]),
layers = L.control.layers({"Baselayer": baseLayer}, {"Overlay": overlay}).addTo(map);
function isChecked() {
return !!(map._container.querySelector('.leaflet-control-layers-overlays input').checked);
}
expect(isChecked()).to.not.be.ok();
map.addLayer(overlay);
expect(isChecked()).to.be.ok();
map.removeLayer(overlay);
expect(isChecked()).to.not.be.ok();
});
it("not when a non-included layer is added or removed", function () {
var baseLayer = L.tileLayer(),
overlay = L.marker([0, 0]),
layers = L.control.layers({"Base": baseLayer}).addTo(map);
var spy = sinon.spy(layers, '_update');
map.addLayer(overlay);
map.removeLayer(overlay);
expect(spy.called).to.not.be.ok();
});
it("updates when an included layer is removed from the control", function () {
document.body.appendChild(map._container);
var baseLayer = L.tileLayer(),
overlay = L.marker([0, 0]),
layers = L.control.layers({"Base": baseLayer}, {"Overlay": overlay}).addTo(map);
layers.removeLayer(overlay);
expect(map._container.querySelector('.leaflet-control-layers-overlays').children.length)
.to.be.equal(0);
});
it('silently returns when trying to remove a non-existing layer from the control', function () {
var layers = L.control.layers({'base': L.tileLayer()}).addTo(map);
expect(function () {
layers.removeLayer(L.marker([0, 0]));
}).to.not.throwException();
expect(layers._layers.length).to.be.equal(1);
});
it("having repeated layers works as expected", function () {
document.body.appendChild(map._container);
var layerA = L.tileLayer(''), layerB = L.tileLayer(''),
baseLayers = {"Layer 1": layerA, "Layer 2": layerB, "Layer 3": layerA},
layers = L.control.layers(baseLayers).addTo(map);
function checkInputs(idx) {
var inputs = map._container.querySelectorAll('.leaflet-control-layers-base input');
for (var i = 0; i < inputs.length; i++) {
expect(inputs[i].checked === (idx === i)).to.be.ok();
}
}
happen.click(layers._baseLayersList.getElementsByTagName("input")[1]);
checkInputs(1);
expect(map._layers[L.Util.stamp(layerB)]).to.be.equal(layerB);
expect(map._layers[L.Util.stamp(layerA)]).to.be.equal(undefined);
happen.click(layers._baseLayersList.getElementsByTagName("input")[0]);
checkInputs(0);
expect(map._layers[L.Util.stamp(layerA)]).to.be.equal(layerA);
expect(map._layers[L.Util.stamp(layerB)]).to.be.equal(undefined);
happen.click(layers._baseLayersList.getElementsByTagName("input")[2]);
checkInputs(2);
expect(map._layers[L.Util.stamp(layerA)]).to.be.equal(layerA);
expect(map._layers[L.Util.stamp(layerB)]).to.be.equal(undefined);
});
});
describe("is removed cleanly", function () {
beforeEach(function () {
map.setView([0, 0], 14);
});
it("and layers in the control can still be removed", function () {
var baseLayer = L.tileLayer('').addTo(map);
var layersCtrl = L.control.layers({'Base': baseLayer}).addTo(map);
map.removeControl(layersCtrl);
expect(function () {
map.removeLayer(baseLayer);
}).to.not.throwException();
});
it("and layers in the control can still be removed when added after removing control from map", function () {
var baseLayer = L.tileLayer('').addTo(map);
var layersCtrl = L.control.layers().addTo(map);
map.removeControl(layersCtrl);
layersCtrl.addBaseLayer(baseLayer, 'Base');
expect(function () {
map.removeLayer(baseLayer);
}).to.not.throwException();
});
});
describe("is created with an expand link", function () {
it("when collapsed", function () {
var layersCtrl = L.control.layers(null, null, {collapsed: true}).addTo(map);
expect(map._container.querySelector('.leaflet-control-layers-toggle')).to.be.ok();
});
it("when not collapsed", function () {
var layersCtrl = L.control.layers(null, null, {collapsed: false}).addTo(map);
expect(map._container.querySelector('.leaflet-control-layers-toggle')).to.be.ok();
});
});
describe("collapse when collapsed: true", function () {
it('expands when mouse is over', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: true}).addTo(map);
happen.once(layersCtrl._container, {type:'mouseover'});
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
});
it('collapses when mouse is out', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: true}).addTo(map);
happen.once(layersCtrl._container, {type:'mouseover'});
happen.once(layersCtrl._container, {type:'mouseout'});
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.not.be.ok();
});
it('collapses when map is clicked', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: true}).addTo(map);
map.setView([0, 0], 0);
happen.once(layersCtrl._container, {type:'mouseover'});
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
happen.click(map._container);
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.not.be.ok();
});
});
describe("does not collapse when collapsed: false", function () {
it('does not collapse when mouse enters or leaves', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: false}).addTo(map);
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
happen.once(layersCtrl._container, {type:'mouseover'});
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
happen.once(layersCtrl._container, {type:'mouseout'});
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
});
it('does not collapse when map is clicked', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: false}).addTo(map);
map.setView([0, 0], 0);
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
happen.click(map._container);
expect(map._container.querySelector('.leaflet-control-layers-expanded')).to.be.ok();
});
it('is scrollable if necessary when added on map', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: false}),
div = document.createElement('div'),
i = 0;
// Need to create a DIV with specified height and insert it into DOM, so that the browser
// gives it an actual size.
map.remove();
div.style.height = div.style.width = '200px';
document.body.appendChild(div);
map = L.map(div);
for (; i < 20; i += 1) {
// Default text size: 12px => 12 * 20 = 240px height (not even considering padding/margin).
layersCtrl.addOverlay(L.marker([0, 0]), i);
}
layersCtrl.addTo(map);
expect(div.clientHeight).to.be.greaterThan(0); // Make sure first that the map container has a height, otherwise this test is useless.
expect(div.clientHeight).to.be.greaterThan(layersCtrl._container.clientHeight);
expect(layersCtrl._form.classList.contains('leaflet-control-layers-scrollbar')).to.be(true);
});
it('becomes scrollable if necessary when too many layers are added while it is already on map', function () {
var layersCtrl = L.control.layers(null, null, {collapsed: false}),
div = document.createElement('div'),
i = 0;
// Need to create a DIV with specified height and insert it into DOM, so that the browser
// gives it an actual size.
map.remove();
div.style.height = div.style.width = '200px';
document.body.appendChild(div);
map = L.map(div);
layersCtrl.addTo(map);
expect(layersCtrl._form.classList.contains('leaflet-control-layers-scrollbar')).to.be(false);
for (; i < 20; i += 1) {
// Default text size: 12px => 12 * 20 = 240px height (not even considering padding/margin).
layersCtrl.addOverlay(L.marker([0, 0]), i);
}
expect(div.clientHeight).to.be.greaterThan(layersCtrl._container.clientHeight);
expect(layersCtrl._form.classList.contains('leaflet-control-layers-scrollbar')).to.be(true);
});
});
describe("sortLayers", function () {
beforeEach(function () {
map.setView([0, 0], 14);
});
it("keeps original order by default", function () {
var baseLayerOne = L.tileLayer('').addTo(map);
var baseLayerTwo = L.tileLayer('').addTo(map);
var markerC = L.marker([0, 2]).addTo(map);
var markerB = L.marker([0, 1]).addTo(map);
var markerA = L.marker([0, 0]).addTo(map);
var layersCtrl = L.control.layers({
'Base One': baseLayerOne,
'Base Two': baseLayerTwo
}, {
'Marker C': markerC,
'Marker B': markerB,
'Marker A': markerA
}).addTo(map);
var elems = map.getContainer().querySelectorAll('div.leaflet-control-layers label span');
expect(elems[0].innerHTML.trim()).to.be.equal('Base One');
expect(elems[1].innerHTML.trim()).to.be.equal('Base Two');
expect(elems[2].innerHTML.trim()).to.be.equal('Marker C');
expect(elems[3].innerHTML.trim()).to.be.equal('Marker B');
expect(elems[4].innerHTML.trim()).to.be.equal('Marker A');
});
it("sorts alphabetically if no function is specified", function () {
var baseLayerOne = L.tileLayer('').addTo(map);
var baseLayerTwo = L.tileLayer('').addTo(map);
var markerA = L.marker([0, 0]).addTo(map);
var markerB = L.marker([0, 1]).addTo(map);
var markerC = L.marker([0, 2]).addTo(map);
var layersCtrl = L.control.layers({
'Base Two': baseLayerTwo,
'Base One': baseLayerOne
}, {
'Marker A': markerA,
'Marker C': markerC,
'Marker B': markerB
}, {
sortLayers: true
}).addTo(map);
var elems = map.getContainer().querySelectorAll('div.leaflet-control-layers label span');
expect(elems[0].innerHTML.trim()).to.be.equal('Base One');
expect(elems[1].innerHTML.trim()).to.be.equal('Base Two');
expect(elems[2].innerHTML.trim()).to.be.equal('Marker A');
expect(elems[3].innerHTML.trim()).to.be.equal('Marker B');
expect(elems[4].innerHTML.trim()).to.be.equal('Marker C');
});
it("uses the compare function to sort layers", function () {
var baseLayerOne = L.tileLayer('', {customOption: 999}).addTo(map);
var baseLayerTwo = L.tileLayer('', {customOption: 998}).addTo(map);
var markerA = L.marker([0, 0], {customOption: 102}).addTo(map);
var markerB = L.marker([0, 1], {customOption: 100}).addTo(map);
var markerC = L.marker([0, 2], {customOption: 101}).addTo(map);
var layersCtrl = L.control.layers({
'Base One': baseLayerOne,
'Base Two': baseLayerTwo
}, {
'Marker A': markerA,
'Marker B': markerB,
'Marker C': markerC
}, {
sortLayers: true,
sortFunction: function (a, b) { return a.options.customOption - b.options.customOption; }
}).addTo(map);
var elems = map.getContainer().querySelectorAll('div.leaflet-control-layers label span');
expect(elems[0].innerHTML.trim()).to.be.equal('Base Two');
expect(elems[1].innerHTML.trim()).to.be.equal('Base One');
expect(elems[2].innerHTML.trim()).to.be.equal('Marker B');
expect(elems[3].innerHTML.trim()).to.be.equal('Marker C');
expect(elems[4].innerHTML.trim()).to.be.equal('Marker A');
});
});
});