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6d07b7f45d
This one swaps out dojo entirely. I wish that there was a way to divide tasks between dojo and nojo, but the module loader system makes this more or less impossible, or at least incredibly annoying.
48 lines
2.0 KiB
JavaScript
Executable File
48 lines
2.0 KiB
JavaScript
Executable File
// ----------------------------------------------------------------------
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// Rule class
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iD.styleparser.Rule = function() {};
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iD.styleparser.Rule.prototype = {
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conditions: [], // the Conditions to be evaluated for the Rule to be fulfilled
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isAnd: true, // do all Conditions need to be true for the Rule to be fulfilled? (Always =true for MapCSS)
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minZoom: 0, // minimum zoom level at which the Rule is fulfilled
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maxZoom: 255, // maximum zoom level at which the Rule is fulfilled
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subject: '', // entity type to which the Rule applies: 'way', 'node', 'relation', 'area' (closed way) or 'line' (unclosed way)
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constructor: function(_subject) {
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// summary: A MapCSS selector. Contains a list of Conditions; the entity type to which the selector applies;
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// and the zoom levels at which it is true. way[waterway=river][boat=yes] would be parsed into one Rule.
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// The selectors and declaration together form a StyleChooser.
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this.subject=_subject;
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this.conditions=[];
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},
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addCondition: function(_condition) {
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// summary: Add a condition to this rule.
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this.conditions.push(_condition);
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},
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test: function(entity,tags,zoom) {
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// summary: Evaluate the Rule on the given entity, tags and zoom level.
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// returns: true if the Rule passes, false if the conditions aren't fulfilled.
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if ((this.subject !== '') && (entity.entityType !== this.subject)) {
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return false;
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}
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if (zoom<this.minZoom || zoom>this.maxZoom) { return false; }
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var v=true; var i=0; var isAnd=this.isAnd;
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array.forEach(this.conditions, function(condition) {
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var r=condition.test(tags);
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if (i === 0) { v=r; }
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else if (isAnd) { v=v && r; }
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else { v = v || r; }
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i++;
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});
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return v;
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},
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toString:function() {
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return this.subject+" z"+this.minZoom+"-"+this.maxZoom+": "+this.conditions;
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}
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};
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