private static int GetLength(NativeMethods.IHTMLElement2 element)
{
NativeMethods.IHTMLRectCollection rectColl = element.GetClientRects();
//Debug.Assert(rectColl.GetLength() == 1);
Object obj = rectColl.GetLength() - 1;
NativeMethods.IHTMLRect rect = (NativeMethods.IHTMLRect)rectColl.Item(ref obj);
return(rect.GetRight() - rect.GetLeft());
}
internal static int GetMaxWidthToFit(MobileControl control, out byte templateStatus)
{
IDesigner parentDesigner = ControlDesigner(control.Parent);
IDesigner controlDesigner = ControlDesigner(control);
int defaultControlWidthInTemplate;
NativeMethods.IHTMLElement2 htmlElement2Parent = null;
if (controlDesigner == null)
{
templateStatus = CONTROL_IN_TEMPLATE_NONEDIT;
return(0);
}
Debug.Assert(controlDesigner is MobileControlDesigner ||
controlDesigner is MobileTemplatedControlDesigner,
"controlDesigner is not MobileControlDesigner or MobileTemplatedControlDesigner");
templateStatus = 0x00;
if (parentDesigner is MobileTemplatedControlDesigner)
{
htmlElement2Parent =
(NativeMethods.IHTMLElement2)
((MobileTemplatedControlDesigner)parentDesigner).DesignTimeElementInternal;
}
else if (parentDesigner is MobileContainerDesigner)
{
htmlElement2Parent =
(NativeMethods.IHTMLElement2)
((MobileContainerDesigner)parentDesigner).DesignTimeElementInternal;
}
bool inTemplate;
int nestingLevel = DesignerAdapterUtil.NestingLevel(control, out inTemplate, out defaultControlWidthInTemplate);
if (inTemplate)
{
templateStatus = CONTROL_IN_TEMPLATE_EDIT;
}
if (htmlElement2Parent != null)
{
int maxWidth;
if (!inTemplate)
{
Debug.Assert(control.Parent is MobileControl);
Style parentStyle = ((MobileControl)control.Parent).Style;
Alignment alignment = (Alignment)parentStyle[Style.AlignmentKey, true];
int parentChildOffset = 0;
// AUI 2786
if (alignment != Alignment.NotSet && alignment != Alignment.Left)
{
parentChildOffset = _regularParentChildOffset;
}
else
{
NativeMethods.IHTMLRectCollection rectColl = null;
NativeMethods.IHTMLRect rect = null;
int index = 0;
Object obj = index;
NativeMethods.IHTMLElement2 htmlElement2;
if (controlDesigner is MobileControlDesigner)
{
htmlElement2 = (NativeMethods.IHTMLElement2)((MobileControlDesigner)controlDesigner).DesignTimeElementInternal;
}
else
{
htmlElement2 = (NativeMethods.IHTMLElement2)((MobileTemplatedControlDesigner)controlDesigner).DesignTimeElementInternal;
}
if (null == htmlElement2)
{
return(0);
}
try
{
rectColl = htmlElement2.GetClientRects();
}
catch (Exception)
{
// this happens when switching from Design view to HTML view
return(0);
}
if (rectColl.GetLength() >= 1)
{
rect = (NativeMethods.IHTMLRect)rectColl.Item(ref obj);
parentChildOffset = rect.GetLeft();
rectColl = htmlElement2Parent.GetClientRects();
//Debug.Assert(rectColl.GetLength() == 1);
rect = (NativeMethods.IHTMLRect)rectColl.Item(ref obj);
parentChildOffset -= rect.GetLeft();
}
}
maxWidth = GetLength(htmlElement2Parent) - _marginWidth - parentChildOffset;
if (maxWidth > 0 && maxWidth > _defaultContainerWidth - nestingLevel * _marginPerLevel)
{
maxWidth = _defaultContainerWidth - nestingLevel * _marginPerLevel;
}
}
else
{
int parentWidth = GetLength(htmlElement2Parent);
if (parentWidth == 0)
{
// AUI 4525
maxWidth = defaultControlWidthInTemplate;
}
else
{
maxWidth = parentWidth - _templateParentChildOffset;
}
if (maxWidth > 0 && maxWidth > defaultControlWidthInTemplate - nestingLevel * _marginPerLevel)
{
maxWidth = defaultControlWidthInTemplate - nestingLevel * _marginPerLevel;
}
}
return(maxWidth);
}
return(0);
}