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Mutable symbolizer properties for style functions

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This change adds setters for symbolizer properties. In addition, it
introduces a mutable flag on all styles. By default, this is set to
true. ol.style.createStyleFunction sets it to false for all static
styles.

The new setters assert that the mutable flag is true, so whenever an
application tries to set a symbolizer property on a style that was
assigned to a vector layer or feature overlay, the assertion will fail.
This commit is contained in:
Andreas Hocevar
2014-09-03 16:57:50 -06:00
parent 2470f21b4c
commit a50f6d7a2f
9 changed files with 448 additions and 28 deletions
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47
examples/vector-layer.js
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@@ -11,37 +11,34 @@ goog.require('ol.style.Style');
goog.require('ol.style.Text');
var styleCache = {};
var style = new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.6)'
}),
stroke: new ol.style.Stroke({
color: '#319FD3',
width: 1
}),
text: new ol.style.Text({
font: '12px Calibri,sans-serif',
fill: new ol.style.Fill({
color: '#000'
}),
stroke: new ol.style.Stroke({
color: '#fff',
width: 3
})
})
});
var styles = [style];
var vectorLayer = new ol.layer.Vector({
source: new ol.source.GeoJSON({
projection: 'EPSG:3857',
url: 'data/geojson/countries.geojson'
}),
style: function(feature, resolution) {
var text = resolution < 5000 ? feature.get('name') : '';
if (!styleCache[text]) {
styleCache[text] = [new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.6)'
}),
stroke: new ol.style.Stroke({
color: '#319FD3',
width: 1
}),
text: new ol.style.Text({
font: '12px Calibri,sans-serif',
text: text,
fill: new ol.style.Fill({
color: '#000'
}),
stroke: new ol.style.Stroke({
color: '#fff',
width: 3
})
})
})];
}
return styleCache[text];
style.getText().setText(resolution < 5000 ? feature.get('name') : '');
return styles;
}
});