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Enum for checking built-in lib functions internally

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This commit is contained in:
Tim Schaub
2013-06-25 11:54:34 -06:00
parent 70fef73869
commit 1eaf82ead5
2 changed files with 52 additions and 38 deletions
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81
src/ol/expr/expression.js
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@@ -1,4 +1,5 @@
goog.provide('ol.expr');
goog.provide('ol.expr.functions');
goog.require('ol.Extent');
goog.require('ol.Feature');
@@ -83,43 +84,55 @@ ol.expr.isLibCall = function(expr) {
* Library of well-known functions. These are available to expressions parsed
* with `ol.expr.parse`.
*
* @type {Object}
* @type {Object.<string, function(...)>}
*/
ol.expr.lib = {
ol.expr.lib = {};
/**
* Enumeration of library function names.
*
* @enum {string}
*/
ol.expr.functions = {
EXTENT: 'extent',
GEOMETRY_TYPE: 'geometryType'
};
/**
* Determine if a feature's extent intersects the provided extent.
* @param {number} minX Minimum x-coordinate value.
* @param {number} maxX Maximum x-coordinate value.
* @param {number} minY Minimum y-coordinate value.
* @param {number} maxY Maximum y-coordinate value.
* @return {boolean} The provided extent intersects the feature's extent.
* @this {ol.Feature}
*/
ol.expr.lib[ol.expr.functions.EXTENT] = function(minX, maxX, minY, maxY) {
var intersects = false;
var geometry = this.getGeometry();
if (geometry) {
intersects = ol.extent.intersects(geometry.getBounds(),
[minX, maxX, minY, maxY]);
}
return intersects;
};
/**
* Determine if a feature's extent intersects the provided extent.
* @param {number} minX Minimum x-coordinate value.
* @param {number} maxX Maximum x-coordinate value.
* @param {number} minY Minimum y-coordinate value.
* @param {number} maxY Maximum y-coordinate value.
* @return {boolean} The provided extent intersects the feature's extent.
* @this {ol.Feature}
*/
'extent': function(minX, maxX, minY, maxY) {
var intersects = false;
var geometry = this.getGeometry();
if (geometry) {
intersects = ol.extent.intersects(geometry.getBounds(),
[minX, maxX, minY, maxY]);
}
return intersects;
},
/**
* Determine if a feature's default geometry is of the given type.
* @param {ol.geom.GeometryType} type Geometry type.
* @return {boolean} The feature's default geometry is of the given type.
* @this {ol.Feature}
*/
'geometryType': function(type) {
var same = false;
var geometry = this.getGeometry();
if (geometry) {
same = geometry.getType() === type;
}
return same;
}
/**
* Determine if a feature's default geometry is of the given type.
* @param {ol.geom.GeometryType} type Geometry type.
* @return {boolean} The feature's default geometry is of the given type.
* @this {ol.Feature}
*/
ol.expr.lib[ol.expr.functions.GEOMETRY_TYPE] = function(type) {
var same = false;
var geometry = this.getGeometry();
if (geometry) {
same = geometry.getType() === type;
}
return same;
};