Changeset 8086 in josm

Timestamp:

2015-02-19T11:52:05+01:00 (10 years ago)

Author:

bastiK

Message:

MapCSS: add support for dynamic subparts

This feature is not useful on its own (aimed at loops & jumps).
Will keep this undocumented for now.

Location:

trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss

Files:

• MapCSSParser.jj (modified) (3 diffs)
• MapCSSStyleSource.java (modified) (4 diffs)
• Selector.java (modified) (7 diffs)
• Subpart.java (added)

trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj

@@ -12 +12 @@
 import java.util.List;
 
+import org.openstreetmap.josm.Main;
 import org.openstreetmap.josm.gui.mappaint.Keyword;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Condition;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.Context;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Expression;
+import org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Instruction;
+import org.openstreetmap.josm.gui.mappaint.mapcss.LiteralExpression;
+import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSException;
 import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSRule;
 import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSRule.Declaration;
 import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Selector;
-import org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory;
-import org.openstreetmap.josm.gui.mappaint.mapcss.LiteralExpression;
-import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSException;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.ChildOrParentSelector;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.GeneralSelector;
 import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.LinkSelector;
+import org.openstreetmap.josm.gui.mappaint.mapcss.Subpart;
 import org.openstreetmap.josm.tools.ColorHelper;
 import org.openstreetmap.josm.tools.Pair;
-import org.openstreetmap.josm.Main;
 
 /**
@@ -553 +554 @@
     Pair<Integer, Integer> r = null;
     List<Condition> conditions = new ArrayList<Condition>();
-    String sub = null;
+    Subpart sub = null;
 }
 {
@@ -708 +709 @@
 }
 
-String subpart() :
+Subpart subpart() :
 {
     String s;
+    Expression e;
 }
 {
     <DCOLON>
-    ( s=ident() { return s; } | <STAR> { return "*"; } )
+    (
+        s=ident() { return new Subpart.StringSubpart(s); }
+    |
+        <STAR> { return new Subpart.StringSubpart("*"); }
+    |
+        <LPAR> e=expression() <RPAR> { return new Subpart.ExpressionSubpart(e); }
+    )
 }
 

trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSStyleSource.java

@@ -374 +374 @@
                         continue;
                     }
-                    env.layer = gs.getSubpart();
+                    env.layer = null;
+                    env.layer = gs.getSubpart().getId(env);
                     r.execute(env);
                 }
@@ -455 +456 @@
         for (MapCSSRule r : matchingRuleIndex.getRuleCandidates(osm)) {
             env.clearSelectorMatchingInformation();
-            env.layer = r.selector.getSubpart();
+            env.layer = null;
+            String sub = env.layer = r.selector.getSubpart().getId(env);
             if (r.selector.matches(env)) { // as side effect env.parent will be set (if s is a child selector)
                 Selector s = r.selector;
@@ -467 +469 @@
                 if (r.declaration.idx == lastDeclUsed) continue; // don't apply one declaration more than once
                 lastDeclUsed = r.declaration.idx;
-                String sub = s.getSubpart();
-                if (sub == null) {
-                    sub = "default";
-                }
-                else if ("*".equals(sub)) {
+                if ("*".equals(sub)) {
                     for (Entry<String, Cascade> entry : mc.getLayers()) {
                         env.layer = entry.getKey();
@@ -487 +485 @@
 
     public boolean evalMediaExpression(String feature, Object val) {
-        if ("user-agent".equals(feature)) {
-            String s = Cascade.convertTo(val, String.class);
-            if ("josm".equals(s)) return true;
-        }
-        if ("min-josm-version".equals(feature)) {
-            Float v = Cascade.convertTo(val, Float.class);
-            if (v != null) return Math.round(v) <= Version.getInstance().getVersion();
-        }
-        if ("max-josm-version".equals(feature)) {
-            Float v = Cascade.convertTo(val, Float.class);
-            if (v != null) return Math.round(v) >= Version.getInstance().getVersion();
-        }
-        return false;
+        if (feature == null) return false;
+        switch (feature) {
+            case "user-agent":
+            {
+                String s = Cascade.convertTo(val, String.class);
+                return "josm".equals(s);
+            }
+            case "min-josm-version":
+            {
+                Float v = Cascade.convertTo(val, Float.class);
+                return v != null && Math.round(v) <= Version.getInstance().getVersion();
+            }
+            case "max-josm-version":
+            {
+                Float v = Cascade.convertTo(val, Float.class);
+                return v != null && Math.round(v) >= Version.getInstance().getVersion();
+            }
+            default:
+                return false;
+        }
     }
 

trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/Selector.java

@@ -50 +50 @@
     boolean matches(Environment env);
 
-    String getSubpart();
+    Subpart getSubpart();
 
     Range getRange();
@@ -372 +372 @@
 
         @Override
-        public String getSubpart() {
+        public Subpart getSubpart() {
             return right.getSubpart();
         }
@@ -453 +453 @@
 
         @Override
-        public String getSubpart() {
+        public Subpart getSubpart() {
             throw new UnsupportedOperationException("Not supported yet.");
         }
@@ -475 +475 @@
     public static class GeneralSelector extends OptimizedGeneralSelector {
 
-        public GeneralSelector(String base, Pair<Integer, Integer> zoom, List<Condition> conds, String subpart) {
+        public GeneralSelector(String base, Pair<Integer, Integer> zoom, List<Condition> conds, Subpart subpart) {
             super(base, zoom, conds, subpart);
         }
@@ -497 +497 @@
         public final String base;
         public final Range range;
-        public final String subpart;
-
-        public OptimizedGeneralSelector(String base, Pair<Integer, Integer> zoom, List<Condition> conds, String subpart) {
+        public final Subpart subpart;
+
+        public OptimizedGeneralSelector(String base, Pair<Integer, Integer> zoom, List<Condition> conds, Subpart subpart) {
             super(conds);
             this.base = base;
@@ -513 +513 @@
                 range = Range.ZERO_TO_INFINITY;
             }
-            this.subpart = subpart;
-        }
-
-        public OptimizedGeneralSelector(String base, Range range, List<Condition> conds, String subpart) {
+            this.subpart = subpart != null ? subpart : Subpart.DEFAULT_SUBPART;
+        }
+
+        public OptimizedGeneralSelector(String base, Range range, List<Condition> conds, Subpart subpart) {
             super(conds);
             this.base = base;
             this.range = range;
-            this.subpart = subpart;
+            this.subpart = subpart != null ? subpart : Subpart.DEFAULT_SUBPART;
         }
 
@@ -528 +528 @@
 
         @Override
-        public String getSubpart() {
+        public Subpart getSubpart() {
             return subpart;
         }