Changeset 12397 for trunk/sources/HeuristicLab.Core.Views/3.3/TypeSelector.cs

Timestamp:

05/26/15 12:09:33 (9 years ago)

Author:

pfleck

Message:

#2387

• Adapted behavior of the matching in the TypeSelector that it behave the same as the NewItemDialog. The search string is tokenized by space and matches if all tokens are contained, (eg. "Sym Reg" matches "SymbolicRegression...").
• Enabled navigation with up- and down-arrow in the tree while the search-box is focused.
• Improved response time of NewItemDialog and TypeSelector when they contain a large amount of nodes.

File:

• trunk/sources/HeuristicLab.Core.Views/3.3/TypeSelector.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Core.Views/3.3/TypeSelector.cs

@@ -192 +192 @@
         // remove nodes
         typesTreeView.BeginUpdate();
+        var searchTokens = searchString.Split(' ');
+
         int i = 0;
         while (i < typesTreeView.Nodes.Count) {
-          int j = 0;
-          while (j < typesTreeView.Nodes[i].Nodes.Count) {
-            if (!typesTreeView.Nodes[i].Nodes[j].Text.ToLower().Contains(searchString)) {
-              if ((typesTreeView.Nodes[i].Nodes[j].Tag as Type).Equals(selectedType))
-                SelectedType = null;
-              typesTreeView.Nodes[i].Nodes[j].Remove();
-            } else
-              j++;
-          }
-          if (typesTreeView.Nodes[i].Nodes.Count == 0)
-            typesTreeView.Nodes[i].Remove();
-          else
-            i++;
+          var node = typesTreeView.Nodes[i];
+          bool remove = FilterNode(node, searchTokens);
+          if (remove)
+            typesTreeView.Nodes.RemoveAt(i);
+          else i++;
         }
         typesTreeView.EndUpdate();
         currentSearchString = searchString;
 
-        // if there is just one type node left, select by default
-        if (typesTreeView.Nodes.Count == 1) {
-          if (typesTreeView.Nodes[0].Nodes.Count == 1) {
-            typesTreeView.SelectedNode = typesTreeView.Nodes[0].Nodes[0];
-          }
-        }
+        // select first item
+        typesTreeView.BeginUpdate();
+        var firstNode = typesTreeView.Nodes.Count > 0 ? typesTreeView.Nodes[0] : null;
+        while (firstNode != null && !(firstNode.Tag is Type))
+          firstNode = firstNode.NextVisibleNode;
+        if (firstNode != null)
+          typesTreeView.SelectedNode = firstNode;
 
         if (typesTreeView.Nodes.Count == 0) {
@@ -225 +220 @@
           typesTreeView.Enabled = true;
         }
+        typesTreeView.EndUpdate();
         UpdateDescription();
       }
+    }
+
+    private bool FilterNode(TreeNode node, string[] searchTokens) {
+      if (node.Tag is IPluginDescription) { // Plugin node
+        int i = 0;
+        while (i < node.Nodes.Count) {
+          bool remove = FilterNode(node.Nodes[i], searchTokens);
+          if (remove)
+            node.Nodes.RemoveAt(i);
+          else i++;
+        }
+        return node.Nodes.Count == 0;
+      } if (node.Tag is Type) { // Type node
+        var text = node.Text;
+        if (searchTokens.Any(searchToken => !text.ToLower().Contains(searchToken))) {
+          var typeTag = (Type)node.Tag;
+          if (typeTag == SelectedType) {
+            SelectedType = null;
+            typesTreeView.SelectedNode = null;
+          }
+          return true;
+        }
+        return false;
+      }
+      throw new InvalidOperationException("Encountered neither a plugin nor a type node during tree traversal.");
     }
 
@@ -355 +376 @@
       SetTypeParameter();
     }
+    private void searchTextBox_KeyDown(object sender, KeyEventArgs e) {
+      if (typesTreeView.Nodes.Count == 0)
+        return;
+
+      if (e.KeyCode == Keys.Up || e.KeyCode == Keys.Down) {
+        var selectedNode = typesTreeView.SelectedNode;
+
+        if (selectedNode == null) { // nothing selected => select first
+          if (e.KeyCode == Keys.Down) typesTreeView.SelectedNode = typesTreeView.Nodes.Count > 0 ? typesTreeView.Nodes[0] : null;
+        } else {
+          if (e.KeyCode == Keys.Down && selectedNode.NextVisibleNode != null)
+            typesTreeView.SelectedNode = selectedNode.NextVisibleNode;
+          if (e.KeyCode == Keys.Up && selectedNode.PrevVisibleNode != null)
+            typesTreeView.SelectedNode = selectedNode.PrevVisibleNode;
+        }
+        e.Handled = true;
+      }
+    }
     #endregion