extended selection API, deprecated setSelection as per #174

docs/graph.html

@@ -2149,16 +2149,36 @@ var options: {
     </td>
   </tr>
 
+    <tr>
+        <td>selectNodes(selection, [highlightEdges])</td>
+        <td>none</td>
+        <td>Select nodes.
+            <code>selection</code> is an array with ids of nodes to be selected.
+            The array <code>selection</code> can contain zero or multiple ids.
+            Example usage: <code>graph.selectNodes([3, 5]);</code> will select
+            nodes with id 3 and 5. The highlisghEdges boolean can be used to automatically select the edges connected to the node.
+        </td>
+    </tr>
+    <tr>
+        <td>selectEdges(selection)</td>
+        <td>none</td>
+        <td>Select Edges.
+            <code>selection</code> is an array with ids of edges to be selected.
+            The array <code>selection</code> can contain zero or multiple ids.
+            Example usage: <code>graph.selectEdges([3, 5]);</code> will select
+            edges with id 3 and 5.
+        </td>
+    </tr>
   <tr>
     <td>setSelection(selection)</td>
     <td>none</td>
-    <td>Select nodes.
-      <code>selection</code> is an array with ids of nodes to be selected.
-      The array <code>selection</code> can contain zero or multiple ids.
-      Example usage: <code>graph.setSelection([3, 5]);</code> will select
-      nodes with id 3 and 5.
+    <td>Select nodes [deprecated].
+        <code>selection</code> is an array with ids of nodes to be selected.
+        The array <code>selection</code> can contain zero or multiple ids.
+        Example usage: <code>graph.setSelection([3, 5]);</code> will select
+        nodes with id 3 and 5.
     </td>
-  </tr>
+</tr>
 
   <tr>
     <td>setSize(width, height)</td>

src/graph/graphMixins/SelectionMixin.js

@@ -402,10 +402,13 @@ var SelectionMixin = {
    * @param {Boolean} [doNotTrigger] | ignore trigger
    * @private
    */
-  _selectObject : function(object, append, doNotTrigger) {
+  _selectObject : function(object, append, doNotTrigger, highlightEdges) {
     if (doNotTrigger === undefined) {
       doNotTrigger = false;
     }
+    if (highlightEdges === undefined) {
+      highlightEdges = true;
+    }
 
     if (this._selectionIsEmpty() == false && append == false && this.forceAppendSelection == false) {
       this._unselectAll(true);
@@ -414,7 +417,7 @@ var SelectionMixin = {
     if (object.selected == false) {
       object.select();
       this._addToSelection(object);
-      if (object instanceof Node && this.blockConnectingEdgeSelection == false) {
+      if (object instanceof Node && this.blockConnectingEdgeSelection == false && highlightEdges == true) {
         this._selectConnectedEdges(object);
       }
     }
@@ -619,10 +622,67 @@ var SelectionMixin = {
       }
       this._selectObject(node,true,true);
     }
+
+    console.log("setSelection is deprecated. Please use selectNodes instead.")
+
     this.redraw();
   },
 
 
+  /**
+   * select zero or more nodes with the option to highlight edges
+   * @param {Number[] | String[]} selection     An array with the ids of the
+   *                                            selected nodes.
+   * @param {boolean} [highlightEdges]
+   */
+  selectNodes : function(selection, highlightEdges) {
+    var i, iMax, id;
+
+    if (!selection || (selection.length == undefined))
+      throw 'Selection must be an array with ids';
+
+    // first unselect any selected node
+    this._unselectAll(true);
+
+    for (i = 0, iMax = selection.length; i < iMax; i++) {
+      id = selection[i];
+
+      var node = this.nodes[id];
+      if (!node) {
+        throw new RangeError('Node with id "' + id + '" not found');
+      }
+      this._selectObject(node,true,true,highlightEdges);
+    }
+    this.redraw();
+  },
+
+
+  /**
+   * select zero or more edges
+   * @param {Number[] | String[]} selection     An array with the ids of the
+   *                                            selected nodes.
+   */
+  selectEdges : function(selection) {
+    var i, iMax, id;
+
+    if (!selection || (selection.length == undefined))
+      throw 'Selection must be an array with ids';
+
+    // first unselect any selected node
+    this._unselectAll(true);
+
+    for (i = 0, iMax = selection.length; i < iMax; i++) {
+      id = selection[i];
+
+      var edge = this.edges[id];
+      if (!edge) {
+        throw new RangeError('Edge with id "' + id + '" not found');
+      }
+      this._selectObject(edge,true,true,highlightEdges);
+    }
+    this.redraw();
+  },
+
   /**
    * Validate the selection: remove ids of nodes which no longer exist
    * @private