Changeset 23100 in osm for applications/editors/josm/plugins/wayselector/src

Timestamp:

2010-09-10T21:24:17+02:00 (15 years ago)

Author:

skela

Message:

'Do not mutate the collection of selected ways. Convert TAB to spaces.'

File:

• applications/editors/josm/plugins/wayselector/src/org/openstreetmap/josm/plugins/wayselector/WaySelection.java (modified) (8 diffs)

applications/editors/josm/plugins/wayselector/src/org/openstreetmap/josm/plugins/wayselector/WaySelection.java

@@ -18 +18 @@
  */
 public class WaySelection {
-    /** selected ways */
-    Collection<Way> ways;
     /** outer endpoints of selected ways */
     TreeSet<Node> outerNodes;
@@ -28 +26 @@
      @param[in] selection a selection of ways
      */
-    public WaySelection(Collection<Way> ways) {
-        this.ways = ways;
-        outerNodes = null;
-        nodes = null;
+    public WaySelection(final Collection<Way> ways) {
+        if (ways.isEmpty()) {
+            // The selection cannot be extended.
+            outerNodes = null;
+            nodes = null;
+        }
+        else {
+            nodes = new TreeSet<Node>();
+            outerNodes = new TreeSet<Node>();
+
+            for (Way way : ways)
+                addNodes(way);
+        }
     }
 
@@ -38 +45 @@
     private void addNodes(Node node) {
         if (node == null);
-        else if (!nodes.add(node))
-            outerNodes.remove(node);
-        else
-            outerNodes.add(node);
+        else if (!nodes.add(node))
+            outerNodes.remove(node);
+        else
+            outerNodes.add(node);
     }
 
@@ -48 +55 @@
     private void addNodes(Way way) {
         addNodes(way.firstNode());
-        addNodes(way.lastNode());
+        addNodes(way.lastNode());
     }
 
@@ -54 +61 @@
      @return true if the selection can be extended */
     public boolean canExtend() {
-        if (ways.isEmpty())
-            return false;
-
-        nodes = new TreeSet<Node>();
-        outerNodes = new TreeSet<Node>();
-
-        for (Way way : ways)
-            addNodes(way);
-
-        return !outerNodes.isEmpty();
+        return outerNodes != null && !outerNodes.isEmpty();
     }
 
@@ -75 +73 @@
 
         for (Way way : OsmPrimitive.getFilteredList(node.getReferrers(),
-                                                    Way.class))
-            if (way.getNodesCount() >= 2 && !selection.contains(way) &&
-                way.isFirstLastNode(node))
+                                                    Way.class))
+            if (way.getNodesCount() >= 2 && !selection.contains(way) &&
+                way.isFirstLastNode(node))
                 foundWays.add(way);
 
-        return foundWays.size() == 1 ? foundWays.first() : null;
+        return foundWays.size() == 1 ? foundWays.first() : null;
     }
 
@@ -86 +84 @@
      Finds out if the current selection can be extended.
 
-     The members ways, outerNodes, nodes must have been
-     initialized; @see canExtend(). How to update these
-     members when extending the selection, @see extend().
+     The members outerNodes, nodes must have been initialized.
+     How to update these members when extending the selection, @see extend().
      @param selection current selection
      @return a way by which to extend the selection, or null */
     private Way findWay(Collection<OsmPrimitive> selection) {
-        for (Node node : outerNodes) {
-            Way way = findWay(selection, node);
-            if (way != null)
-                return way;
-        }
+        for (Node node : outerNodes) {
+            Way way = findWay(selection, node);
+            if (way != null)
+                return way;
+        }
 
-        return null;
+        return null;
     }
 
@@ -104 +101 @@
      @param data the data set in which to extend the selection */
     void extend(DataSet data) {
-        Collection<OsmPrimitive> currentSelection;
-        LinkedList<OsmPrimitive> selection;
-        boolean selectionChanged = false;
+        Collection<OsmPrimitive> currentSelection;
+        LinkedList<OsmPrimitive> selection;
+        boolean selectionChanged = false;
         Way way;
 
         if (!canExtend())
-            return;
+            return;
 
-        currentSelection = data.getSelected();
+        currentSelection = data.getSelected();
 
-        way = findWay(currentSelection);
+        way = findWay(currentSelection);
 
-        if (way == null)
-            return;
+        if (way == null)
+            return;
 
-        selection = new LinkedList<OsmPrimitive>();
-        for (OsmPrimitive primitive : currentSelection)
-            selection.add(primitive);
+        selection = new LinkedList<OsmPrimitive>();
+        for (OsmPrimitive primitive : currentSelection)
+            selection.add(primitive);
 
-        do {
-            if (!selection.add(way))
-                break;
+        do {
+            if (!selection.add(way))
+                break;
 
-            selectionChanged = true;
-            ways.add(way);
-            addNodes(way);
+            selectionChanged = true;
+            addNodes(way);
 
-            way = findWay(selection);
-        } while (way != null);
+            way = findWay(selection);
+        } while (way != null);
 
-        if (selectionChanged)
-            data.setSelected(selection, true);
+        if (selectionChanged)
+            data.setSelected(selection, true);
     }
 }