static void RenderElementsAndRaiseChangedEventOnAllDependencyProperties(DependencyObject dependencyObject)
{
//--------------------------------------------------------------
// RAISE "PROPERTYCHANGED" FOR ALL THE PROPERTIES THAT HAVE
// A VALUE THAT HAS BEEN SET, INCLUDING ATTACHED PROPERTIES,
// AND CALL THE "METHOD TO UPDATE DOM"
//--------------------------------------------------------------
// This is used to force a redraw of all the properties that are
// set on the object (including Attached Properties!). For
// example, if a Border has a colored background, this is the
// moment when that color will be applied. Properties that have
// no value set by the user are not concerned (their default
// state is rendered elsewhere).
#if PERFSTAT
var t0 = Performance.now();
#endif
// we copy the Dictionary so that the foreach doesn't break when
// we modify a DependencyProperty inside the Changed of another
// one (which causes it to be added to the Dictionary).
// we exclude properties where source is set to default because
// it means they have been set at some point, and unset afterward,
// so we should not call the PropertyChanged callback.
var list = dependencyObject.INTERNAL_PropertyStorageDictionary
.Where(s => s.Value.BaseValueSourceInternal > BaseValueSourceInternal.Default)
.ToList();
#if PERFSTAT
Performance.Counter("VisualTreeManager: Copy list of properties", t0);
#endif
foreach (KeyValuePair <DependencyProperty, INTERNAL_PropertyStorage> propertiesAndTheirStorage in list)
{
// Read the value:
DependencyProperty property = propertiesAndTheirStorage.Key;
#if PERFSTAT
var t1 = Performance.now();
#endif
PropertyMetadata propertyMetadata = property.GetTypeMetaData(dependencyObject.GetType());
if (propertyMetadata != null)
{
INTERNAL_PropertyStorage storage = propertiesAndTheirStorage.Value;
object value = null;
bool valueWasRetrieved = false;
//--------------------------------------------------
// Call "Apply CSS", which uses "GetCSSEquivalent/s"
//--------------------------------------------------
if (propertyMetadata.GetCSSEquivalent != null || propertyMetadata.GetCSSEquivalents != null)
{
if (!valueWasRetrieved)
{
value = INTERNAL_PropertyStore.GetEffectiveValue(storage);
valueWasRetrieved = true;
}
INTERNAL_PropertyStore.ApplyCssChanges(value, value, propertyMetadata, storage.Owner);
}
//--------------------------------------------------
// Call "MethodToUpdateDom"
//--------------------------------------------------
if (propertyMetadata.MethodToUpdateDom != null)
{
if (!valueWasRetrieved)
{
value = INTERNAL_PropertyStore.GetEffectiveValue(storage);
valueWasRetrieved = true;
}
// Call the "Method to update DOM"
propertyMetadata.MethodToUpdateDom(storage.Owner, value);
}
//--------------------------------------------------
// Call PropertyChanged
//--------------------------------------------------
if (propertyMetadata.PropertyChangedCallback != null &&
propertyMetadata.CallPropertyChangedWhenLoadedIntoVisualTree != WhenToCallPropertyChangedEnum.Never)
{
if (!valueWasRetrieved)
{
value = INTERNAL_PropertyStore.GetEffectiveValue(storage);
valueWasRetrieved = true;
}
// Raise the "PropertyChanged" event
propertyMetadata.PropertyChangedCallback(storage.Owner, new DependencyPropertyChangedEventArgs(value, value, property));
}
}
#if PERFSTAT
Performance.Counter("VisualTreeManager: RaisePropertyChanged for property '" + property.Name + "'", t1);
#endif
}
}
static void AttachVisualChild_Private_MainSteps(UIElement child,
UIElement parent,
bool doesParentRequireToCreateAWrapperForEachChild,
object innerDivOfWrapperForChild,
object domElementWhereToPlaceChildStuff,
object wrapperForChild)
{
#if REWORKLOADED
if (INTERNAL_VisualTreeOperation.Current.Root == null)
{
INTERNAL_VisualTreeOperation.Current.Root = parent;
}
#endif
//#if CSHTML5BLAZOR && DEBUG
// string childIndentity = child + (child != null ? " (" + child.GetHashCode() + ")" : "");
// string parentIndentity = parent + (parent != null ? " (" + parent.GetHashCode() + ")" : "");
// Console.WriteLine("OPEN SILVER DEBUG: VisualTreeManager : AttachVisualChild_Private_FinalStepsOnlyIfControlIsVisible: " + childIndentity + " attached to " + parentIndentity);
//#endif
//--------------------------------------------------------
// CREATE THE DIV FOR THE MARGINS (OPTIONAL):
//--------------------------------------------------------
#if PERFSTAT
var t1 = Performance.now();
#endif
// Determine if an additional DIV for handling margins is needed:
object additionalOutsideDivForMargins = null;
var margin = ((FrameworkElement)child).Margin;
bool containsNegativeMargins = (margin.Left < 0d || margin.Top < 0d || margin.Right < 0d || margin.Bottom < 0d);
#if ONLY_ADD_DIV_FOR_MARGINS_WHEN_MARGINS_NOT_ZERO
bool isADivForMarginsNeeded = !(parent is Canvas) && !(child is Inline) && child is FrameworkElement; // Note: In a Canvas, we don't want to add the additional DIV because there are no margins and we don't want to interfere with the pointer events by creating an additional DIV.
if (isADivForMarginsNeeded)
{
var horizontalAlign = ((FrameworkElement)child).HorizontalAlignment;
var verticalAlign = ((FrameworkElement)child).VerticalAlignment;
isADivForMarginsNeeded = !(margin.Left == 0 && margin.Top == 0 && margin.Right == 0 && margin.Bottom == 0 && horizontalAlign == HorizontalAlignment.Stretch && verticalAlign == VerticalAlignment.Stretch);
}
#else
bool isADivForMarginsNeeded = !(parent is Canvas) && // Note: In a Canvas, we don't want to add the additional DIV because there are no margins and we don't want to interfere with the pointer events by creating an additional DIV.
!(child is Inline); // Note: inside a TextBlock we do not want the HTML DIV because we want to create HTML SPAN elements only (otherwise there would be unwanted line returns).
#endif
if (isADivForMarginsNeeded)
{
// Determine where to place it:
object whereToPlaceDivForMargins =
(doesParentRequireToCreateAWrapperForEachChild
? innerDivOfWrapperForChild
: domElementWhereToPlaceChildStuff);
// Create and append the DIV for handling margins and append:
additionalOutsideDivForMargins = INTERNAL_HtmlDomManager.CreateDomElementAndAppendIt("div", whereToPlaceDivForMargins, parent); //todo: check if the third parameter should be the child or the parent (make something with margins and put a mouseenter in the parent then see if the event is triggered).
// Style the DIV for handling margins:
var style = INTERNAL_HtmlDomManager.GetDomElementStyleForModification(additionalOutsideDivForMargins);
style.boxSizing = "border-box";
if (child is FrameworkElement &&
(((FrameworkElement)child).HorizontalAlignment == HorizontalAlignment.Stretch && double.IsNaN(((FrameworkElement)child).Width)))
{
if (!containsNegativeMargins)
{
style.width = "100%";
}
}
if (child is FrameworkElement &&
(((FrameworkElement)child).VerticalAlignment == VerticalAlignment.Stretch && double.IsNaN(((FrameworkElement)child).Height)))
{
style.height = "100%";
}
}
#if PERFSTAT
Performance.Counter("VisualTreeManager: Create the DIV for the margin", t1);
#endif
//--------------------------------------------------------
// PREPARE THE CHILD:
//--------------------------------------------------------
#if PERFSTAT
var t2 = Performance.now();
#endif
// Determine where to place the child:
object whereToPlaceTheChild = (isADivForMarginsNeeded
? additionalOutsideDivForMargins : (doesParentRequireToCreateAWrapperForEachChild
? innerDivOfWrapperForChild
: domElementWhereToPlaceChildStuff));
// Set the "Parent" property of the Child (IMPORTANT: we need to do that before child.CreateDomElement because the type of the parent is used to display the child correctly):
child.INTERNAL_VisualParent = parent;
// Set the "ParentWindow" property so that the element knows where to display popups:
child.INTERNAL_ParentWindow = parent.INTERNAL_ParentWindow;
// Create and append the DOM structure of the Child:
object domElementWhereToPlaceGrandChildren = null;
object outerDomElement;
bool isChildAControl = child is Control;
if (child.INTERNAL_HtmlRepresentation == null)
{
bool hasTemplate = isChildAControl && ((Control)child).HasTemplate;
if (hasTemplate)
{
outerDomElement = ((Control)child).CreateDomElementForControlTemplate(whereToPlaceTheChild, out domElementWhereToPlaceGrandChildren);
}
else
{
outerDomElement = child.CreateDomElement(whereToPlaceTheChild, out domElementWhereToPlaceGrandChildren);
}
}
else
{
outerDomElement = INTERNAL_HtmlDomManager.CreateDomFromStringAndAppendIt(child.INTERNAL_HtmlRepresentation, whereToPlaceTheChild, child);
}
// Initialize the "Width" and "Height" of the child DOM structure:
if (child is FrameworkElement)
{
FrameworkElement.INTERNAL_InitializeOuterDomElementWidthAndHeight(((FrameworkElement)child), outerDomElement);
}
// Update the DOM structure of the Child (for example, if the child is a Grid, this will render its rows and columns):
child.INTERNAL_UpdateDomStructureIfNecessary();
// For debugging purposes (to better read the output html), add a class to the outer DIV that tells us the corresponding type of the element (Border, StackPanel, etc.):
INTERNAL_HtmlDomManager.SetDomElementAttribute(outerDomElement, "class", child.GetType().ToString());
#if PERFSTAT
Performance.Counter("VisualTreeManager: Prepare the child", t2);
#endif
//--------------------------------------------------------
// REMEMBER ALL INFORMATION FOR FUTURE USE:
//--------------------------------------------------------
#if PERFSTAT
var t3 = Performance.now();
#endif
// Remember the DIVs:
child.INTERNAL_OuterDomElement = outerDomElement;
child.INTERNAL_InnerDomElement = domElementWhereToPlaceGrandChildren;
child.INTERNAL_AdditionalOutsideDivForMargins = additionalOutsideDivForMargins ?? outerDomElement;
child.INTERNAL_InnerDivOfTheChildWrapperOfTheParentIfAny = doesParentRequireToCreateAWrapperForEachChild ? innerDivOfWrapperForChild : null;
// Remember the information about the "VisualChildren":
if (parent.INTERNAL_VisualChildrenInformation == null)
{
parent.INTERNAL_VisualChildrenInformation = new Dictionary <UIElement, INTERNAL_VisualChildInformation>();
}
parent.INTERNAL_VisualChildrenInformation.Add(child,
new INTERNAL_VisualChildInformation()
{
INTERNAL_UIElement = child,
INTERNAL_OptionalChildWrapper_OuterDomElement = wrapperForChild,
INTERNAL_OptionalChildWrapper_ChildWrapperInnerDomElement = innerDivOfWrapperForChild
});
#if PERFSTAT
Performance.Counter("VisualTreeManager: Remember all info for future use", t3);
#endif
//--------------------------------------------------------
// HANDLE SPECIAL CASES:
//--------------------------------------------------------
#if PERFSTAT
var t4 = Performance.now();
#endif
// If we are inside a canvas, we set the position to "absolute":
if (parent is Canvas)
{
INTERNAL_HtmlDomManager.GetDomElementStyleForModification(outerDomElement).position = "absolute"; //todo: test if this works properly
}
UIElement.SynchronizeForceInheritProperties(child, parent);
#if REVAMPPOINTEREVENTS
UIElement.INTERNAL_UpdateCssPointerEvents(child);
#else
// If the current element is inside a Grid, we need to explicitly set its CSS property "PointerEvents=auto" because its parent child wrapper has "PointerEvents=none" in order to prevent its child wrappers from overlapping each other and thus preventing clicks on some children.
if (parent is Grid && child is FrameworkElement) //todo: generalize this code so that we have no hard-reference on the Grid control, and third-party controls can use the same mechanics.
{
var frameworkElement = ((FrameworkElement)child);
FrameworkElement.INTERNAL_UpdateCssPointerEventsPropertyBasedOnIsHitTestVisibleAndIsEnabled(frameworkElement, frameworkElement.IsHitTestVisible, frameworkElement.IsEnabled);
}
#endif
// Reset the flag that tells if we have already applied the RenderTransformOrigin (this is useful to ensure that the default RenderTransformOrigin is (0,0) like in normal XAML, instead of (0.5,0.5) like in CSS):
child.INTERNAL_RenderTransformOriginHasBeenApplied = false;
#if PERFSTAT
Performance.Counter("VisualTreeManager: Handle special cases", t4);
#endif
//--------------------------------------------------------
// HANDLE EVENTS:
//--------------------------------------------------------
#if PERFSTAT
var t5 = Performance.now();
#endif
// Register DOM events if any:
child.INTERNAL_AttachToDomEvents();
#if PERFSTAT
Performance.Counter("VisualTreeManager: Handle events", t5);
#endif
//--------------------------------------------------------
// HANDLE INHERITED PROPERTIES:
//--------------------------------------------------------
#if PERFSTAT
var t6 = Performance.now();
#endif
// Get the Inherited properties and pass them to the direct children:
foreach (DependencyProperty dependencyProperty in
#if BRIDGE
INTERNAL_BridgeWorkarounds.GetDictionaryKeys_SimulatorCompatible(parent.INTERNAL_AllInheritedProperties)
#else
parent.INTERNAL_AllInheritedProperties.Keys
#endif
)
{
bool recursively = false; // We don't want a recursion here because the "Attach" method is already recursive due to the fact that we raise property changed on the Children property, which causes to reattach the subtree.
INTERNAL_PropertyStorage storage = parent.INTERNAL_AllInheritedProperties[dependencyProperty];
child.SetInheritedValue(dependencyProperty, INTERNAL_PropertyStore.GetEffectiveValue(storage), recursively);
}
#if PERFSTAT
Performance.Counter("Handle inherited properties", t6);
#endif
//--------------------------------------------------------
// SET "ISLOADED" PROPERTY AND CALL "ONATTACHED" EVENT:
//--------------------------------------------------------
// Tell the control that it is now present into the visual tree:
child._isLoaded = true;
// Raise the "OnAttached" event:
child.INTERNAL_OnAttachedToVisualTree(); // IMPORTANT: Must be done BEFORE "RaiseChangedEventOnAllDependencyProperties" (for example, the ItemsControl uses this to initialize its visual)
//--------------------------------------------------------
// RENDER THE ELEMENTS BY APPLYING THE CSS PROPERTIES:
//--------------------------------------------------------
// Defer rendering when the control is not visible to when becomes visible (note: when this option is enabled, we do not apply the CSS properties of the UI elements that are not visible. Those property are applied later, when the control becomes visible. This option results in improved performance.)
bool enableDeferredRenderingOfCollapsedControls =
EnableOptimizationWhereCollapsedControlsAreNotRendered ||
EnableOptimizationWhereCollapsedControlsAreLoadedLast ||
EnableOptimizationWhereCollapsedControlsAreNotLoaded;
if (enableDeferredRenderingOfCollapsedControls && !child.IsVisible)
{
child.INTERNAL_DeferredRenderingWhenControlBecomesVisible = () =>
{
RenderElementsAndRaiseChangedEventOnAllDependencyProperties(child);
};
}
else
{
RenderElementsAndRaiseChangedEventOnAllDependencyProperties(child);
}
//--------------------------------------------------------
// HANDLE BINDING:
//--------------------------------------------------------
#if PERFSTAT
var t9 = Performance.now();
#endif
child.INTERNAL_UpdateBindingsSource();
#if PERFSTAT
Performance.Counter("VisualTreeManager: Handle binding", t9);
#endif
//--------------------------------------------------------
// HANDLE TABINDEX:
//--------------------------------------------------------
// For GotFocus and LostFocus to work, the DIV specified by "INTERNAL_OptionalSpecifyDomElementConcernedByFocus"
// (or the OuterDomElement otherwise) needs to have the "tabIndex" attribute set. Therefore we need to always set
// it (unless IsTabStop is False) to its current value (default is Int32.MaxValue). At the time when this code was
// written, there was no way to automatically call the "OnChanged" on a dependency property if no value was set.
#if !REWORKLOADED
// IMPORTANT: This needs to be done AFTER the "OnApplyTemplate" (for example, the TextBox sets the "INTERNAL_OptionalSpecifyDomElementConcernedByFocus" in the "OnApplyTemplate").
if (isChildAControl)
{
if (!(child is ContentPresenter) && !(child is TextBlock)) //ContentPresenter should not count in tabbing, as well as TextBlock (especially since TextBlock is not supposed to be a Control).
{
Control.TabIndexProperty_MethodToUpdateDom(child, ((Control)child).TabIndex);
}
}
#endif
//--------------------------------------------------------
// APPLY THE VISIBILITY:
//--------------------------------------------------------
Visibility childVisibility = child.Visibility;
if (childVisibility == Visibility.Collapsed)
{
UIElement.INTERNAL_ApplyVisibility(child, childVisibility);
}
//--------------------------------------------------------
// RAISE THE "SIZECHANGED" EVENT:
//--------------------------------------------------------
#if !REWORKLOADED
#if PERFSTAT
var t10 = Performance.now();
#endif
// Raise the "SizeChanged" event: (note: in XAML, the "SizeChanged" event is called before the "Loaded" event)
// IMPORTANT: This event needs to be raised AFTER the "OnApplyTemplate" and AFTER the "IsLoaded=true" (for example, it is used in the ScrollBar implementation).
if (child is FrameworkElement)
{
((FrameworkElement)child).INTERNAL_SizeChangedWhenAttachedToVisualTree();
}
#if PERFSTAT
Performance.Counter("VisualTreeManager: Raise size changed event", t10);
#endif
//--------------------------------------------------------
// RAISE THE "LOADED" EVENT:
//--------------------------------------------------------
#if PERFSTAT
var t11 = Performance.now();
#endif
// Raise the "Loaded" event: (note: in XAML, the "loaded" event of the children is called before the "loaded" event of the parent)
if (child is FrameworkElement)
{
((FrameworkElement)child).INTERNAL_RaiseLoadedEvent();
}
child.StartManagingPointerPositionForPointerExitedEventIfNeeded();
#if PERFSTAT
Performance.Counter("VisualTreeManager: Raise Loaded event", t11);
#endif
#else
INTERNAL_VisualTreeOperation.Current.Enqueue(child);
#endif
}