public void SetCorrectVisibilityStates(object sender, EventArgs e)
{
UiThread.RunOnIdle(PostUpdateSetCorrectVisibilityStates);
}
private void DoCallAppWidgetOnIdle()
{
IdleCount++;
UiThread.DoRunAllPending();
}
protected void DoWrappingLayout()
{
if (doingLayout)
{
needAnotherLayout = true;
return;
}
using (this.LayoutLock())
{
doingLayout = true;
// remove all the children we added
foreach (var child in addedChildren)
{
if (child.Parent != null)
{
using (child.Parent.LayoutLock())
{
child.Parent.RemoveChild(child);
child.ClearRemovedFlag();
}
}
}
// close all the row containers
this.CloseChildren();
// add in new row container
FlowLayoutWidget childContainerRow = new FlowLayoutWidget()
{
Margin = RowMargin,
Padding = RowPadding,
HAnchor = HAnchor.Stretch,
};
base.AddChild(childContainerRow);
var rowPaddingWidth = RowPadding.Width + RowMargin.Width + this.Margin.Width + this.Padding.Width;
double runningSize = 0;
MaxLineWidth = 0;
foreach (var child in addedChildren)
{
var childWidth = child.Width + child.DeviceMarginAndBorder.Width;
if (child.HAnchor == HAnchor.Stretch)
{
childWidth = child.MinimumSize.X + child.DeviceMarginAndBorder.Width;
}
if (runningSize + childWidth > this.Width - rowPaddingWidth ||
child is IHardBreak)
{
MaxLineWidth = Math.Max(MaxLineWidth, runningSize);
runningSize = 0;
var lastItemWasHorizontalSpacer = false;
if (childContainerRow != null)
{
childContainerRow.PerformLayout();
if (childContainerRow.Children.LastOrDefault() is HorizontalSpacer)
{
lastItemWasHorizontalSpacer = true;
}
}
childContainerRow = new FlowLayoutWidget()
{
Margin = RowMargin,
Padding = RowPadding,
HAnchor = HAnchor.Stretch,
Border = RowBoarder,
BorderColor = RowBoarderColor,
};
if (lastItemWasHorizontalSpacer)
{
childContainerRow.AddChild(new HorizontalSpacer());
}
base.AddChild(childContainerRow);
}
if (runningSize > 0 ||
!(child is ISkipIfFirst))
{
// add the new child to the current row
using (childContainerRow.LayoutLock())
{
childContainerRow.AddChild(child);
}
runningSize += childWidth;
MaxLineWidth = Math.Max(MaxLineWidth, runningSize);
}
}
if (childContainerRow != null)
{
childContainerRow.PerformLayout();
}
MakeProportionalIfRequired();
MakeCenterIfRequired();
doingLayout = false;
}
if (needAnotherLayout)
{
UiThread.RunOnIdle(DoWrappingLayout);
needAnotherLayout = false;
}
// change the size to force a recursive layout event
this.Height--;
this.Height++;
this.PerformLayout();
}