public void Calling_Contains_should_return_true_when_xenwidget_is_a_descendant_of_root()
{
var label = new Label();
var child = new Entry {
Placeholder = "text"
};
var layout = new StackLayout();
layout.Children.Add(child);
var page = new ContentPage {
Content = layout
};
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var childPair = mgr[child.Id.ToString()];
var containsWidget = mgr.Contains(childPair.XenWidget);
var containsVisual = mgr.Contains(childPair.VisualElement);
var containsLabel = mgr.Contains(label);
Assert.IsTrue(containsWidget, "XenWidget not found.");
Assert.IsTrue(containsVisual, "VisualElement not found.");
Assert.IsFalse(containsLabel, "Label was not added to the page.");
}
public void Should_return_all_parents_for_nested_stacks()
{
var stack = new StackLayout();
StackLayout last = null;
for (var i = 0; i < 5; i++)
{
var tmp = new StackLayout();
if (last == null)
{
stack.Children.Add(tmp);
}
else
{
last.Children.Add(tmp);
}
last = tmp;
}
var page = new ContentPage
{
Content = stack
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[last.Id];
var cp = ElementHelper.GetParents(pair.XenWidget);
Assert.AreEqual(6, cp.Length);
}
public void Should_remove_child_of_stacklayout_by_using_its_xenwidget()
{
var child = new Entry {
Placeholder = "text"
};
var layout = new StackLayout();
layout.Children.Add(child);
var page = new ContentPage {
Content = layout
};
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var childPair = mgr[child.Id.ToString()];
var layoutPair = mgr[layout.Id.ToString()];
Assert.IsNotEmpty(layoutPair.XenWidget.Children, "The stacklayouts xenwidget should have children.");
var removed = mgr.Remove(childPair.XenWidget);
Assert.IsTrue(removed, "Removed wasn't true.");
Assert.IsEmpty(layout.Children, "The stacklayout has children.");
Assert.IsEmpty(layoutPair.XenWidget.Children, "The stacklayout has children.");
}
public void Removing_root_xenwidget()
{
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
Assert.Throws <InvalidOperationException>(() => mgr.Remove(root));
}
public void When_setting_design_surface_the_page_becomes_the_root_widget()
{
var mgr = new XamarinDesignSurfaceManager();
var page = new ContentPage();
var root = mgr.SetDesignSurface(page);
Assert.AreEqual(page.Id.ToString(), root.Id, "Ids aren't equal.");
}
public void When_setting_design_surface_Root_is_set_and_returned()
{
var mgr = new XamarinDesignSurfaceManager();
var page = new ContentPage();
var root = mgr.SetDesignSurface(page);
Assert.AreEqual(root, mgr.Root);
}
public void When_widget_isnt_found_during_lookup_return_null()
{
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var pair = mgr["12345"];
Assert.IsNull(pair);
}
public void Can_lookup_xenwidget_by_guid()
{
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var match = mgr[page.Id];
Assert.IsNotNull(match, "Match was null.");
Assert.AreEqual(match.XenWidget.Id, page.Id.ToString());
}
public void SetParent_entry_is_parent_and_label_is_child()
{
var child = new Label();
var entry = new Entry();
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
page.Content = entry;
mgr.SetDesignSurface(page);
var parented = mgr.SetParent(child, entry);
Assert.IsFalse(parented, "Parented should be false.");
Assert.AreEqual(mgr.Root.Children[0].Id, entry.Id.ToString(), "The content view has changed.");
}
public void ContentView_HasContentProperty()
{
var cv = new ContentView();
var page = new ContentPage {
Content = cv
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[cv.Id.ToString()];
Assert.IsTrue(pair.XenWidget.HasContentProperty);
Assert.IsTrue(pair.XenWidget.IsContentPropertyViewType);
Assert.AreEqual(pair.XenWidget.ContentPropertyTypeName, typeof(View).FullName);
}
public void Page_without_content()
{
var mgr = new XamarinDesignSurfaceManager();
var page = new ContentPage
{
Title = "No Content Example",
};
var root = mgr.SetDesignSurface(page);
Assert.IsNotNull(root, "Page should be in result.");
Assert.AreEqual(page.Title, root.Name, "Title wrong.");
Assert.AreEqual(nameof(ContentPage), root.Type, "Type wrong.");
Assert.IsTrue(root.Children == null || root.Children.Count == 0, "No children should be returnd.");
}
public void SetParent_page_is_parent_and_label_is_child()
{
var label = new Label {
Text = "value"
};
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var parented = mgr.SetParent(label, page);
Assert.IsTrue(parented, "SetParent returned false.");
Assert.AreEqual(1, mgr.Root.Children.Count, "Expected one child.");
Assert.AreEqual(label.Id.ToString(), mgr.Root.Children[0].Id, "The label widget wasn't added to the children collection.");
}
public void StackLayout_IsLayout_no_ContentProperty()
{
var stack = new StackLayout();
var page = new ContentPage {
Content = stack
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[stack.Id.ToString()];
Assert.AreEqual("System.Collections.IEnumerable<Xamarin.Forms.View>", pair.XenWidget.ContentPropertyTypeName);
Assert.IsTrue(pair.XenWidget.IsLayout);
Assert.IsTrue(pair.XenWidget.IsContentPropertyViewType);
Assert.IsTrue(pair.XenWidget.HasContentProperty);
}
public void Page_with_stacklayout()
{
var page = new ContentPage
{
Title = "Stacklayout Example",
Content = new StackLayout
{
Children =
{
new StackLayout
{
Children =
{
new Entry {
Placeholder = "placeholder "
},
new BoxView {
BackgroundColor = Color.Green
}
}
}
}
}
};
var builder = new XamarinDesignSurfaceManager();
var result = builder.SetDesignSurface(page);
var flattened = result.GetNodeAndDescendants().ToArray();
Assert.IsTrue(flattened.Length == 5, "There should have been 5 widgets created.");
Assert.AreEqual(result.Type, nameof(ContentPage), "1st widget");
Assert.AreEqual(result.CanDelete, false, "1st widget");
Assert.AreEqual(result.Children[0].Type, nameof(StackLayout), "2nd widget");
Assert.AreEqual(result.Children[0].CanDelete, true, "2nd widget");
Assert.AreEqual(result.Children[0].Children[0].Type, nameof(StackLayout), "3rd widget");
Assert.AreEqual(result.Children[0].Children[0].CanDelete, true, "3rd widget");
Assert.AreEqual(result.Children[0].Children[0].Children[0].Type, nameof(Entry), "4th widget");
Assert.AreEqual(result.Children[0].Children[0].Children[0].CanDelete, true, "4th widget");
Assert.AreEqual(result.Children[0].Children[0].Children[1].Type, nameof(BoxView), "5th widget");
Assert.AreEqual(result.Children[0].Children[0].Children[1].CanDelete, true, "5th widget");
}
public void Should_return_null_on_invalid_input()
{
var traverser = new XamarinDesignSurfaceManager();
// Act
var nullArg = traverser[null];
Assert.IsNull(nullArg, "Null returns null.");
var empty = traverser[""];
Assert.IsNull(empty, "Empty returns null.");
var whitespace = traverser[" "];
Assert.IsNull(whitespace, "Whitespace returns null.");
}
public void When_setting_design_surface_the_xenwidget_type_properties_are_set()
{
const string title = "Some title.";
var mgr = new XamarinDesignSurfaceManager();
var page = new ContentPage
{
Title = title
};
var root = mgr.SetDesignSurface(page);
Assert.AreEqual(root.Id, page.Id.ToString(), "Ids aren't equal.");
Assert.AreEqual(root.FullTypeName, page.GetType().FullName, "Full type names aren't equal.");
Assert.AreEqual(root.Type, page.GetType().Name, "Short type names aren't equal.");
Assert.AreEqual(root.Name, title, "The titles aren't equal.");
}
public void Should_return_ContentPage_as_parent()
{
var label = new Label();
var page = new ContentPage
{
Content = label
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[label.Id];
var cp = ElementHelper.GetParents(pair.XenWidget);
Assert.AreEqual(root.Id, cp[0].Id);
}
public void String_Content_isnt_Layout()
{
var label = new Label {
Text = "value"
};
var page = new ContentPage {
Content = label
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[label.Id.ToString()];
Assert.IsFalse(pair.XenWidget.IsLayout);
Assert.IsTrue(pair.XenWidget.HasContentProperty);
Assert.IsFalse(pair.XenWidget.IsContentPropertyViewType);
Assert.AreEqual(typeof(string).FullName, pair.XenWidget.ContentPropertyTypeName);
}
public void Button_has_no_children_and_no_ContentProperty()
{
var btn = new Button {
Text = "value"
};
var page = new ContentPage {
Content = btn
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pair = mgr[btn.Id.ToString()];
Assert.IsFalse(pair.XenWidget.IsLayout);
Assert.IsFalse(pair.XenWidget.HasContentProperty);
Assert.IsFalse(pair.XenWidget.IsContentPropertyViewType);
Assert.AreEqual(null, pair.XenWidget.ContentPropertyTypeName);
}
public void Should_return_view_when_using_indexer()
{
var entry = new Entry();
var button = new Button();
// start of page
var page = new ContentPage
{
Content = new StackLayout
{
Children =
{
new StackLayout
{
Children =
{
new ContentView
{
Content = new StackLayout
{
Children =
{
entry,
button
}
}
}
}
}
}
}
};
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var entryFound = mgr[entry.Id.ToString()];
var buttonFound = mgr[button.Id.ToString()];
Assert.AreSame(entry, entryFound.VisualElement, "Entry is incorrect.");
Assert.AreSame(button, buttonFound.VisualElement, "Button is incorrect.");
Assert.IsNull(mgr["test"], "Should return null when id not found.");
}
public void SetParent_stacklayout_is_parent_and_entry_is_child()
{
var child = new Entry();
var layout = new StackLayout();
var page = new ContentPage();
var mgr = new XamarinDesignSurfaceManager();
page.Content = layout;
mgr.SetDesignSurface(page);
var parented = mgr.SetParent(child, layout);
Assert.IsTrue(parented, "Parented returned false.");
var layoutWidget = mgr[layout.Id.ToString()];
Assert.IsNotEmpty(layoutWidget.XenWidget.Children, "XenWidget did not have any children.");
Assert.IsNotEmpty(layout.Children, "StackLayout view did not contain children.");
}
public void Should_remove_only_design_surface_child_by_using_its_xenwidget()
{
var label = new Label {
Text = "value"
};
var page = new ContentPage {
Content = label
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var labelPair = mgr[label.Id.ToString()];
var removed = mgr.Remove(labelPair.XenWidget);
Assert.IsTrue(removed, "Removed wasn't true.");
Assert.IsEmpty(mgr.Root.Children, "mgr.Root.Children should be empty.");
Assert.IsEmpty(root.Children, "root.Children should be empty.");
Assert.IsNull(page.Content, "Page content should be null.");
}
public void SetParent_ScrollView_is_parent_and_entry_is_child()
{
var child = new Label();
var content = new ScrollView();
var page = new ContentPage {
Content = content
};
var mgr = new XamarinDesignSurfaceManager();
mgr.SetDesignSurface(page);
var parented = mgr.SetParent(child, content);
Assert.IsTrue(parented, "Parented should be true.");
var contentPair = mgr[content.Id.ToString()];
Assert.IsNotEmpty(contentPair.XenWidget.Children, "Content children should have an element.");
Assert.AreEqual(contentPair.XenWidget.Children[0].Id, child.Id.ToString(), "The wrong child was attached.");
}
public void Can_lookup_xenwidget_by_id()
{
var label = new Label {
Text = "textvalue"
};
var page = new ContentPage
{
Content = label
};
var mgr = new XamarinDesignSurfaceManager();
var root = mgr.SetDesignSurface(page);
var pagePair = mgr[page.Id.ToString()];
var labelPair = mgr[label.Id.ToString()];
Assert.AreEqual(root, pagePair.XenWidget, "The root and page aren't equal.");
Assert.AreEqual(pagePair.VisualElement, page, "The page wasn't returned.");
Assert.AreEqual(labelPair.VisualElement, label, "The label wasn't returned.");
Assert.AreEqual(labelPair.XenWidget.Id, label.Id.ToString(), "The label Ids aren't equal.");
}
public void Only_attach_method_can_add_widgets_to_hierarchy()
{
var traverser = new XamarinDesignSurfaceManager();
var layout = new StackLayout
{
Children =
{
new Label {
Text = "For good measure..."
}
}
};
var page = new ContentPage
{
Title = "Testing that a newly added XenWidget can be found in the hierarchy",
Content = layout
};
var addLater = new Label {
Text = "Added after hierarchy built."
};
// Act
var root = traverser.SetDesignSurface(page);
var firstWidgets = root.GetNodeAndDescendants().ToArray();
Assert.IsNull(firstWidgets.FirstOrDefault(w => w.Id == addLater.Id.ToString()), "Recurisve search found label.");
// Act
layout.Children.Add(addLater);
// The root element is fixed. Its the page.
var secondWidgets = root.GetNodeAndDescendants().ToArray();
Assert.IsNull(secondWidgets.FirstOrDefault(w => w.Id == addLater.Id.ToString()), "Recurisve search found label.");
}