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Replaced delegates with new interface ITreeBuilder

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tznind
2020-12-15 09:37:59 +00:00
parent e7dcd49506
commit 8fe8128b0b
3 changed files with 169 additions and 62 deletions
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15
UnitTests/TreeViewTests.cs
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@@ -33,8 +33,7 @@ namespace UnitTests {
Cars = new []{car1 ,car2}
};
var tree = new TreeView();
tree.ChildrenGetter = (s)=> s is Factory f ? f.Cars: null;
var tree = new TreeView(new DelegateTreeBuilder((s)=> s is Factory f ? f.Cars: null));
tree.AddObject(factory1);
return tree;
@@ -219,11 +218,11 @@ namespace UnitTests {
Assert.False(tree.IsExpanded(c1));
// change the children getter so that now cars can have wheels
tree.ChildrenGetter = (o)=>
tree.TreeBuilder = new DelegateTreeBuilder((o)=>
// factories have cars
o is Factory ? new object[]{c1,c2}
// cars have wheels
: new object[]{wheel };
: new object[]{wheel });
// still cannot expand
tree.Expand(c1);
@@ -256,11 +255,11 @@ namespace UnitTests {
Assert.False(tree.IsExpanded(c1));
// change the children getter so that now cars can have wheels
tree.ChildrenGetter = (o)=>
tree.TreeBuilder = new DelegateTreeBuilder((o)=>
// factories have cars
o is Factory ? new object[]{c1,c2}
// cars have wheels
: new object[]{wheel };
: new object[]{wheel });
// still cannot expand
tree.Expand(c1);
@@ -333,7 +332,7 @@ namespace UnitTests {
string root = "root";
var tree = new TreeView();
tree.ChildrenGetter = (s)=> ReferenceEquals(s , root) ? new object[]{obj1 } : null;
tree.TreeBuilder = new DelegateTreeBuilder((s)=> ReferenceEquals(s , root) ? new object[]{obj1 } : null);
tree.AddObject(root);
// Tree is not expanded so the root has no children yet
@@ -346,7 +345,7 @@ namespace UnitTests {
Assert.Equal(1,tree.GetChildren(root).Count(child=>ReferenceEquals(obj1,child)));
// change the getter to return an Equal object (but not the same reference - obj2)
tree.ChildrenGetter = (s)=> ReferenceEquals(s , root) ? new object[]{obj2 } : null;
tree.TreeBuilder = new DelegateTreeBuilder((s)=> ReferenceEquals(s , root) ? new object[]{obj2 } : null);
// tree has cached the knowledge of what children the root has so won't know about the change (we still get obj1)
Assert.Equal(1,tree.GetChildren(root).Count(child=>ReferenceEquals(obj1,child)));