/// <summary>
/// Inserts a List around a sequence of Blocks
/// starting from firstBlock ending with lastBlock.
/// the List must be empty and not inserted in a tree
/// before the operation
/// </summary>
/// <param name="firstBlock"></param>
/// <param name="lastBlock"></param>
internal void Apply(Block firstBlock, Block lastBlock)
{
Invariant.Assert(this.Parent == null, "Cannot Apply List Because It Is Inserted In The Tree Already.");
Invariant.Assert(this.IsEmpty, "Cannot Apply List Because It Is Not Empty.");
Invariant.Assert(firstBlock.Parent == lastBlock.Parent, "Cannot Apply List Because Block Are Not Siblings.");
TextContainer textContainer = this.TextContainer;
textContainer.BeginChange();
try
{
// Wrap all block items into this List element
this.Reposition(firstBlock.ElementStart, lastBlock.ElementEnd);
// Add ListItem elements
Block block = firstBlock;
while (block != null)
{
ListItem listItem;
if (block is List)
{
// To wrap List into list item we pull it into previous ListItem (if any) as sublist
listItem = block.ElementStart.GetAdjacentElement(LogicalDirection.Backward) as ListItem;
if (listItem != null)
{
// Wrap the List into preceding ListItem
listItem.Reposition(listItem.ContentStart, block.ElementEnd);
}
else
{
// No preceding ListItem. Create new one
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
}
}
else
{
// To wrap paragraph into list item we need to create a new one
//
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
// MS Word-like heuristic: clear margin from a paragraph before wrapping it into a list item
// Note: using TextContainer to make sure that undo unit is created.
block.ClearValue(Block.MarginProperty);
block.ClearValue(Block.PaddingProperty);
block.ClearValue(Paragraph.TextIndentProperty);
}
// Stop when the last paragraph is covered
block = block == lastBlock ? null : (Block)listItem.ElementEnd.GetAdjacentElement(LogicalDirection.Forward);
}
// We need to set appropriate FlowDirection property on the new List and its paragraph children.
// We take the FlowDirection value from the first paragraph's FlowDirection value.
TextRangeEdit.SetParagraphProperty(this.ElementStart, this.ElementEnd,
Paragraph.FlowDirectionProperty, firstBlock.GetValue(Paragraph.FlowDirectionProperty));
}
finally
{
textContainer.EndChange();
}
}
// Token: 0x060031BA RID: 12730 RVA: 0x000DBC04 File Offset: 0x000D9E04
internal void Apply(Block firstBlock, Block lastBlock)
{
Invariant.Assert(base.Parent == null, "Cannot Apply List Because It Is Inserted In The Tree Already.");
Invariant.Assert(base.IsEmpty, "Cannot Apply List Because It Is Not Empty.");
Invariant.Assert(firstBlock.Parent == lastBlock.Parent, "Cannot Apply List Because Block Are Not Siblings.");
TextContainer textContainer = base.TextContainer;
textContainer.BeginChange();
try
{
base.Reposition(firstBlock.ElementStart, lastBlock.ElementEnd);
ListItem listItem;
for (Block block = firstBlock; block != null; block = ((block == lastBlock) ? null : ((Block)listItem.ElementEnd.GetAdjacentElement(LogicalDirection.Forward))))
{
if (block is List)
{
listItem = (block.ElementStart.GetAdjacentElement(LogicalDirection.Backward) as ListItem);
if (listItem != null)
{
listItem.Reposition(listItem.ContentStart, block.ElementEnd);
}
else
{
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
}
}
else
{
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
block.ClearValue(Block.MarginProperty);
block.ClearValue(Block.PaddingProperty);
block.ClearValue(Paragraph.TextIndentProperty);
}
}
TextRangeEdit.SetParagraphProperty(base.ElementStart, base.ElementEnd, Block.FlowDirectionProperty, firstBlock.GetValue(Block.FlowDirectionProperty));
}
finally
{
textContainer.EndChange();
}
}
// Helper that swaps the left and right margins of a block element.
private static void SwapBlockLeftAndRightMargins(Block block)
{
object value = block.GetValue(Block.MarginProperty);
if (value is Thickness)
{
if (Paragraph.IsMarginAuto((Thickness)value))
{
// Nothing to do for auto thickess
}
else
{
// Swap left and right values
object newValue = new Thickness(
/*left*/((Thickness)value).Right,
/*top:*/((Thickness)value).Top,
/*right:*/((Thickness)value).Left,
/*bottom:*/((Thickness)value).Bottom);
SetPropertyValue(block, Block.MarginProperty, value, newValue);
}
}
}
// Helper for SetParagraphProperty -- applies given property value to passed block element.
private static void SetPropertyOnParagraphOrBlockUIContainer(DependencyObject parent, Block block, DependencyProperty property, object value, PropertyValueAction propertyValueAction)
{
// Get the parent flow direction
FlowDirection parentFlowDirection;
if (parent != null)
{
parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
}
else
{
parentFlowDirection = (FlowDirection)FrameworkElement.FlowDirectionProperty.GetDefaultValue(typeof(FrameworkElement));
}
// Some of paragraph operations depend on its flow direction, so get it first.
FlowDirection flowDirection = (FlowDirection)block.GetValue(Block.FlowDirectionProperty);
// Inspect a property value for this paragraph
object currentValue = block.GetValue(property);
object newValue = value;
// If we're setting a structural property on a Paragraph, we need to preserve
// the current value on its children.
PreserveBlockContentStructuralProperty(block, property, currentValue, value);
if (property.PropertyType == typeof(Thickness))
{
// For Margin, Padding, Border - apply the following logic:
Invariant.Assert(currentValue is Thickness, "Expecting the currentValue to be of Thinkness type");
Invariant.Assert(newValue is Thickness, "Expecting the newValue to be of Thinkness type");
newValue = ComputeNewThicknessValue((Thickness)currentValue, (Thickness)newValue, parentFlowDirection, flowDirection, propertyValueAction);
}
else if (property == Paragraph.TextAlignmentProperty)
{
Invariant.Assert(value is TextAlignment, "Expecting TextAlignment as a value of a Paragraph.TextAlignmentProperty");
// TextAlignment must be reverted for RightToLeft flow direction
newValue = ComputeNewTextAlignmentValue((TextAlignment)value, flowDirection);
// For BlockUIContainer text alignment must be translated into
// HorizontalAlignment of the child embedded object.
if (block is BlockUIContainer)
{
UIElement embeddedElement = ((BlockUIContainer)block).Child;
if (embeddedElement != null)
{
HorizontalAlignment horizontalAlignment = GetHorizontalAlignmentFromTextAlignment((TextAlignment)newValue);
// Create an undo unit for property change on embedded framework element.
UIElementPropertyUndoUnit.Add(block.TextContainer, embeddedElement, FrameworkElement.HorizontalAlignmentProperty, horizontalAlignment);
embeddedElement.SetValue(FrameworkElement.HorizontalAlignmentProperty, horizontalAlignment);
}
}
}
else if (currentValue is double)
{
newValue = GetNewDoubleValue(property, (double)currentValue, (double)newValue, propertyValueAction);
}
SetPropertyValue(block, property, currentValue, newValue);
if (property == Block.FlowDirectionProperty)
{
// For flow direction command, we also swap Left and Right margins of the paragraph.
// This ensures indentation is mirrored correctly.
SwapBlockLeftAndRightMargins(block);
}
}
/// <summary>
/// Inserts a List around a sequence of Blocks
/// starting from firstBlock ending with lastBlock.
/// the List must be empty and not inserted in a tree
/// before the operation
/// </summary>
/// <param name="firstBlock"></param>
/// <param name="lastBlock"></param>
internal void Apply(Block firstBlock, Block lastBlock)
{
Invariant.Assert(this.Parent == null, "Cannot Apply List Because It Is Inserted In The Tree Already.");
Invariant.Assert(this.IsEmpty, "Cannot Apply List Because It Is Not Empty.");
Invariant.Assert(firstBlock.Parent == lastBlock.Parent, "Cannot Apply List Because Block Are Not Siblings.");
TextContainer textContainer = this.TextContainer;
textContainer.BeginChange();
try
{
// Wrap all block items into this List element
this.Reposition(firstBlock.ElementStart, lastBlock.ElementEnd);
// Add ListItem elements
Block block = firstBlock;
while (block != null)
{
ListItem listItem;
if (block is List)
{
// To wrap List into list item we pull it into previous ListItem (if any) as sublist
listItem = block.ElementStart.GetAdjacentElement(LogicalDirection.Backward) as ListItem;
if (listItem != null)
{
// Wrap the List into preceding ListItem
listItem.Reposition(listItem.ContentStart, block.ElementEnd);
}
else
{
// No preceding ListItem. Create new one
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
}
}
else
{
// To wrap paragraph into list item we need to create a new one
//
listItem = new ListItem();
listItem.Reposition(block.ElementStart, block.ElementEnd);
// MS Word-like heuristic: clear margin from a paragraph before wrapping it into a list item
// Note: using TextContainer to make sure that undo unit is created.
block.ClearValue(Block.MarginProperty);
block.ClearValue(Block.PaddingProperty);
block.ClearValue(Paragraph.TextIndentProperty);
}
// Stop when the last paragraph is covered
block = block == lastBlock ? null : (Block)listItem.ElementEnd.GetAdjacentElement(LogicalDirection.Forward);
}
// We need to set appropriate FlowDirection property on the new List and its paragraph children.
// We take the FlowDirection value from the first paragraph's FlowDirection value.
TextRangeEdit.SetParagraphProperty(this.ElementStart, this.ElementEnd,
Paragraph.FlowDirectionProperty, firstBlock.GetValue(Paragraph.FlowDirectionProperty));
}
finally
{
textContainer.EndChange();
}
}