org.openstreetmap.josm.gui.mappaint.mapcss

Class Selector.ChildOrParentSelector

java.lang.Object

org.openstreetmap.josm.gui.mappaint.mapcss.Selector.ChildOrParentSelector

All Implemented Interfaces:

Selector

Enclosing interface:

Selector

public static class Selector.ChildOrParentSelector
extends java.lang.Object
implements Selector

Represents a child selector or a parent selector.

In addition to the standard CSS notation for child selectors, JOSM also supports an "inverse" notation:

    selector_a > selector_b { ... }       // the standard notation (child selector)
    relation[type=route] > way { ... }    // example (all ways of a route)

    selector_a < selector_b { ... }       // the inverse notation (parent selector)
    node[traffic_calming] < way { ... }   // example (way that has a traffic calming node)
 

Child: see wiki
Parent: see wiki

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Selector.ChildOrParentSelector.AbstractFinder
private class	Selector.ChildOrParentSelector.ContainsFinder Finds elements which are inside the right element, collects those in children
private class	Selector.ChildOrParentSelector.CrossingFinder
private class	Selector.ChildOrParentSelector.InsideOrEqualFinder Finds elements which are inside the left element, or in other words, it finds elements enclosing e.osm.
private class	Selector.ChildOrParentSelector.MatchingReferrerFinder Finds the first referrer matching left
private class	Selector.ChildOrParentSelector.MultipolygonOpenEndFinder

Nested classes/interfaces inherited from interface org.openstreetmap.josm.gui.mappaint.mapcss.Selector

Selector.AbstractSelector, Selector.ChildOrParentSelector, Selector.ChildOrParentSelectorType, Selector.GeneralSelector, Selector.LinkSelector, Selector.OptimizedGeneralSelector

Field Summary

Fields

Modifier and Type	Field and Description
Selector	left
Selector.LinkSelector	link
Selector	right
Selector.ChildOrParentSelectorType	type

Fields inherited from interface org.openstreetmap.josm.gui.mappaint.mapcss.Selector

BASE_ANY, BASE_AREA, BASE_CANVAS, BASE_META, BASE_NODE, BASE_RELATION, BASE_SETTING, BASE_SETTINGS, BASE_WAY

Constructor Summary

Constructors

Constructor and Description
ChildOrParentSelector(Selector a, Selector.LinkSelector link, Selector b, Selector.ChildOrParentSelectorType type) Constructs a new ChildOrParentSelector.

Method Summary

Modifier and Type	Method and Description
Range	getRange() Returns the scale range, an interval of the form "lower < x <= upper" where 0 <= lower < upper.
Subpart	getSubpart() Returns the subpart, if supported.
private static boolean	isArea(IPrimitive p)
boolean	matches(Environment e) Apply the selector to the primitive and check if it matches.
Selector	optimizedBaseCheck() Create an "optimized" copy of this selector that omits the base check.
java.lang.String	toString()
private void	visitBBox(Environment e, Selector.ChildOrParentSelector.AbstractFinder finder)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

left

public final Selector left

link

public final Selector.LinkSelector link

right

public final Selector right

type

public final Selector.ChildOrParentSelectorType type

Constructor Detail

ChildOrParentSelector

public ChildOrParentSelector(Selector a,
                             Selector.LinkSelector link,
                             Selector b,
                             Selector.ChildOrParentSelectorType type)

Constructs a new ChildOrParentSelector.

Parameters:

a - the first selector

link - link

b - the second selector

type - the selector type

Method Detail

visitBBox

private void visitBBox(Environment e,
                       Selector.ChildOrParentSelector.AbstractFinder finder)

isArea

private static boolean isArea(IPrimitive p)

matches

public boolean matches(Environment e)

Description copied from interface: Selector

Apply the selector to the primitive and check if it matches.

Specified by:

matches in interface Selector

Parameters:

e - the Environment. env.mc and env.layer are read-only when matching a selector. env.source is not needed. This method will set the matchingReferrers field of env as a side effect! Make sure to clear it before invoking this method.

Returns:

true, if the selector applies

getSubpart

public Subpart getSubpart()

Description copied from interface: Selector

Returns the subpart, if supported. A subpart identifies different rendering layers (::subpart syntax).

Specified by:

getSubpart in interface Selector

Returns:

the subpart, if supported

getRange

public Range getRange()

Description copied from interface: Selector

Returns the scale range, an interval of the form "lower < x <= upper" where 0 <= lower < upper.

Specified by:

getRange in interface Selector

Returns:

the scale range, if supported

optimizedBaseCheck

public Selector optimizedBaseCheck()

Description copied from interface: Selector

Create an "optimized" copy of this selector that omits the base check. For the style source, the list of rules is preprocessed, such that there is a separate list of rules for nodes, ways, ... This means that the base check does not have to be performed for each rule, but only once for each primitive.

Specified by:

optimizedBaseCheck in interface Selector

Returns:

a selector that is identical to this object, except the base of the "rightmost" selector is not checked

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object