public static void Capture(Control ctrl)
{
if (ctrl == null)
throw new ArgumentNullException();
capturedCtrl = ctrl;
}
/// <summary>
/// Sets the specified element at the specified index into the child
/// collection. It also corrects the parent.
/// Note that the function requires that _item[index] == null and it
/// also requires that the passed in child is not connected to another UIElement.
/// </summary>
/// <exception cref="ArgumentException">If the new child has already a parent or if the slot a the specified index is not null.</exception>
private void ConnectChild(int index, Control value)
{
// Every function that calls this function needs to call VerifyAccess to prevent
// foreign threads from changing the tree.
//
// We also need to ensure that the tree is homogenous with respect
// to the dispatchers that the elements belong to.
//
Debug.Assert(items[index] == null);
value.Parent = owner;
// The child might be dirty. Hence we need to propagate dirty information
// from the parent and from the child.
//Control.PropagateFlags(_owner, Control.Flags.IsSubtreeDirtyForRender);
//Control.PropagateFlags(value, Control.Flags.IsSubtreeDirtyForRender);
//value._flags |= Control.Flags.IsDirtyForRender;
items[index] = value;
version++;
//Control.PropagateResumeLayout(value);
// Fire notifications
owner.OnChildrenChanged(value, null /* no removed child */, index);
}
/// <summary>
/// Removes the specified element from the UIElementCollection.
/// </summary>
/// <param name="element">The UIElement to remove from the UIElementCollection.</param>
/// <remarks>
/// The UIElements that follow the removed UIElements move up to occupy
/// the vacated spot. The indexes of the UIElements that are moved are
/// also updated.
///
/// If element is null then the first null entry is removed. Note that removing
/// a null entry is linear in the size of the collection.
/// </remarks>
public void Remove(Control element)
{
int indexToRemove = -1;
if (element != null)
{
if (element.Parent != owner)
{
// If the UIElement is not in this collection we silently return without
// failing. This is the same behavior that ArrayList implements.
return;
}
Debug.Assert(element.Parent != null);
DisconnectChild(indexToRemove = IndexOf(element));
}
else
{
// This is the case where element == null. We then remove the first null entry.
for (int i = 0; i < size; i++)
if (items[i] == null)
{
indexToRemove = i;
break;
}
}
if (indexToRemove != -1)
{
--size;
for (int i = indexToRemove; i < size; i++)
{
Control child = items[i + 1];
items[i] = child;
}
items[size] = null;
}
//_owner.InvalidateMeasure();
}
/// <summary>
/// Inserts an element into the UIElementCollection at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which value should be inserted.</param>
/// <param name="element">The UIElement to insert. </param>
/// <exception cref="ArgumentOutOfRangeException">
/// index is less than zero.
///
/// -or-
///
/// index is greater than Count.
/// </exception>
/// <remarks>
/// If Count already equals Capacity, the capacity of the
/// UIElementCollection is increased before the new UIElement
/// is inserted.
///
/// If index is equal to Count, value is added to the
/// end of UIElementCollection.
///
/// The UIElements that follow the insertion point move down to
/// accommodate the new UIElement. The indexes of the UIElements that are
/// moved are also updated.
/// </remarks>
public void Insert(int index, Control element)
{
if (index < 0 || index > size)
throw new ArgumentOutOfRangeException("index");
if (element == null)
throw new ArgumentNullException("element");
if (element.Parent != null) // or a element target can be added.
throw new System.ArgumentException("element has parent");
if ((items == null) || (size == items.Length))
EnsureCapacity(size + 1);
for (int i = size - 1; i >= index; i--)
{
Control child = items[i];
items[i + 1] = child;
}
items[index] = null;
size++;
ConnectChild(index, element);
// Note SetUIElement that increments the version to ensure proper enumerator
// functionality.
//_owner.InvalidateMeasure();
}
/// <summary>
/// Returns the zero-based index of the UIElement. If the UIElement is not
/// in the UIElementCollection -1 is returned. If null is passed to the method, the index
/// of the first entry with null is returned. If there is no null entry -1 is returned.
/// </summary>
/// <param name="UIElement">The UIElement to locate in the UIElementCollection.</param>
public int IndexOf(Control element)
{
if (element == null || element.Parent == owner)
{
for (int i = 0; i < size; i++)
{
if (items[i] == element)
return i;
}
// not found, return -1
return -1;
}
else
return -1;
}
internal void OnChildrenChanged(Control added, Control removed, int indexAffected)
{
if (added != null)
added.Invalidate();
else
Invalidate();
}
public virtual bool Contains(Control child)
{
return children.IndexOf(child) != -1;
}
public ControlCollection2(Control owner)
{
this.owner = owner;
}
/// <summary>
/// Appends a UIElement to the end of the UIElementCollection.
/// </summary>
/// <param name="visual">The UIElement to be added to the end of the UIElementCollection.</param>
/// <returns>The UIElementCollection index at which the UIElement has been added.</returns>
/// <remarks>Adding a null is allowed.</remarks>
/// <exception cref="ArgumentException">If the new child has already a parent.</exception>
public int Add(Control element)
{
if (element == null)
throw new ArgumentNullException("element");
if (element.Parent != null)
{
throw new System.ArgumentException("element has parent");
}
if ((items == null) || (size == items.Length))
EnsureCapacity(size + 1);
int addedPosition = size++;
Debug.Assert(items[addedPosition] == null);
ConnectChild(addedPosition, element);
version++;
// invalidate measure on parent
//_owner.InvalidateMeasure();
return addedPosition;
}
public RenderTask(Control sender, Rect dirtyArea)
{
Sender = sender;
DirtyArea = dirtyArea;
}
/// <summary>
/// Determines whether a element is in the UIElementCollection.
/// </summary>
public bool Contains(Control element)
{
if (element == null)
{
for (int i = 0; i < _size; i++)
{
if (_items[i] == null)
{
return true;
}
}
return false;
}
else
{
return (element.Parent == _owner);
}
}
private Control FindTouchTarget(Control root, Point p)
{
return root.GetValidChildFromScreenPoint(p);
if (lastEventTarget != null)
{
// old:
Control target = lastEventTarget.GetValidChildFromScreenPoint(p);
if (target != null)
return target;
else if (lastEventTarget.ContainsScreenPoint(p))
return lastEventTarget;
else
{
Control par = lastEventTarget.GetValidParentFromScreenPoint(p);
return par != null ? par.GetValidChildFromScreenPoint(p) : (root != null ? root.GetValidChildFromScreenPoint(p) : null);
}
// new:
//var par = lastEventTarget.GetValidParentFromScreenPoint(p);
//return par != null ? par.GetValidChildFromScreenPoint(p) : (root != null ? root.GetValidChildFromScreenPoint(p) : null);
}
else
return root.GetValidChildFromScreenPoint(p);
}
private Control GetTouchTarget(Point p)
{
Control result = null;
//dt = DateTime.Now;
if (TouchCapture.Captured != null)
result = TouchCapture.Captured;
else if (desktop.Children.Contains(cw))
return cw;
//else if (modalWindow != null)
// res = FindTouchTarget(modalWindow, p);
else
result = FindTouchTarget(desktop, p);
//ts = DateTime.Now - dt;
lastEventTarget = result;
return result;
}
public static void ReleaseCapture()
{
capturedCtrl = null;
}
internal Enumerator(ControlCollection collection)
{
_collection = collection;
_index = -1; // not started.
_version = _collection.version;
_currentElement = null;
}
/// <summary>
/// Determines whether a element is in the UIElementCollection.
/// </summary>
public bool Contains(Control element)
{
if (element == null)
{
for (int i = 0; i < size; i++)
if (items[i] == null)
return true;
return false;
}
else
return (element.Parent == owner);
}
/// <summary>
/// Advances the enumerator to the next element of the collection.
/// </summary>
public bool MoveNext()
{
if (_version == _collection.version)
{
if ((_index > -2) && (_index < (_collection.size - 1)))
{
_index++;
_currentElement = _collection[_index];
return true;
}
else
{
_currentElement = null;
_index = -2; // -2 <=> reached the end.
return false;
}
}
else
{
throw new InvalidOperationException("collection changed");
}
}
public ControlCollection(Control owner)
{
Debug.Assert(owner != null);
this.owner = owner;
}
public virtual void Add(Control child)
{
child.Parent = owner;
int idx = children.Add(child);
owner.OnChildrenChanged(child, null, idx);
}
/// <summary>
/// Strongly typed version of CopyTo
/// Copies the collection into the Array.
/// </summary>
public virtual void CopyTo(Control[] array, int index)
{
CopyTo((Array)array, index);
}
public virtual void Remove(Control child)
{
int idx = children.IndexOf(child);
children.Remove(child);
child.Parent = null;
owner.OnChildrenChanged(null, child, idx);
}
public void SetHub(Control page)
{
if (hub != null)
{
if (hub is Hub)
(hub as Hub).Exit();
Children.Remove(hub);
//hub.Visible = false;
}
hub = page;
btnHome.Visible = hub != hubHome;
hub.Visible = true;
Children.Add(hub);
}
