/// <summary>
/// Wrapper for flattening the MarkupString. This is meant to create an equivalent MarkupString List.
/// <remarks>
/// This should call Mix as we move down, and then when we hit text, create the new MarkupString representation
/// of that string, with a parent that holds this new Mixed Markup.
/// </remarks>
/// </summary>
/// <param name="markupStringList">A reference to a markupStringList to put the generated MarkupString instances into.</param>
public void FlattenInto(ref List <MarkupString> markupStringList)
{
var myMarkup = new Markup();
this.FlattenInto(ref markupStringList, this.MyMarkup.Mix(myMarkup));
}
/// <summary>
/// Destructively copies the current Markup of this instance to the markup object given.
/// </summary>
/// <param name="newMarkup">A new Markup object made with the default Constructor.</param>
private void CopyMarkup(Markup newMarkup)
{
newMarkup.MyMarkup.UnionWith(this.MyMarkup);
}
/// <summary>
/// Initializes a new instance of the <see cref="MarkupString" /> class.
/// </summary>
public MarkupString()
{
beneathList = new List <MarkupString>();
stringWeight = new List <int>();
MyMarkup = new Markup();
}
/// <summary>
/// Initializes a new instance of the <see cref="MarkupString" /> class.
/// <remark>
/// This is used for creating a Markup node.
/// </remark>
/// </summary>
/// <param name="markup">The Markup to use the left side of this MarkupString Node.</param>
public MarkupString(Markup markup)
{
MyMarkup = new Markup(markup);
beneathList = new List <MarkupString>();
stringWeight = new List <int>();
}
/// <summary>
/// The InsertString will put markupStringArg into the position in the MarkupString structure.
/// To do this, it may split up a string beneath it. After all, the node is expected to be Marked Up.
/// </summary>
/// <param name="markupStringArg">The MarkupString to insert. Please make sure to give it a Copy!</param>
/// <param name="position">The position into which to insert. See remarks for insertion logic.</param>
/// <returns>The MarkupString itself.</returns>
public MarkupString Insert(MarkupString markupStringArg, int position)
{
if (IsString())
{
beneathList = new List <MarkupString>();
stringWeight = new List <int>();
MyMarkup = new Markup(); // Blank Markup Transition
var rightside = bareString.ToString().Substring(position);
var leftside = bareString.ToString().Substring(0, bareString.Length - rightside.Length);
beneathList.Add(new MarkupString(leftside));
beneathList.Add(new MarkupString(markupStringArg));
beneathList.Add(new MarkupString(rightside));
bareString = null;
stringWeight.Add(beneathList[0].Weight());
stringWeight.Add(beneathList[1].Weight());
stringWeight.Add(beneathList[2].Weight());
}
else
{
var targetPosition = position;
// We need to find the way this string is now 'split', and leave the 'remainder' up to another call of InsertString.
var passedWeights = stringWeight.TakeWhile(val => (targetPosition -= val) >= 0).Count();
/* Warning: here, a position of 3 generates a targetPosition of -5 after noticing a weight 8. The position it needs to
* go into is 3. But had it passed over a weight of 2, the targetposition would be '1' for the /next/ unit. Which is correct.
*
* But if that had a weight of 4, it'd end up being 1-4 = -3. We need to re-add the last step, on which the evaluation failed.
*/
if (targetPosition == 0)
{
// We must place it 'between', at the beginning, or at the 'end' of a beneathList.
// We know how many elements in we should be... so:
// If count is at 0, it's an insert.
// If count is equal to stringWeight.Count, append at end.
// Otherwise, pass the new targetPosition to insert into the String.
beneathList.Insert(passedWeights, markupStringArg);
stringWeight.Insert(passedWeights, markupStringArg.Weight());
}
else
{
// This is the adjustment for the 'last step reduction' error.
targetPosition += stringWeight[passedWeights];
beneathList[passedWeights].Insert(markupStringArg, targetPosition);
stringWeight[passedWeights] += markupStringArg.Weight();
if (!beneathList[passedWeights].MyMarkup.IsOnlyInherit())
{
return(this);
}
// If the below is now an empty (OnlyInherit) Markup, we can 'pull it up'.
// That is to say, we can put its individual beneathLists in the position where we had our old one.
// If the item below is not an empty (OnlyInherit) Markup, then it wasn't the item below that we did
// the final insert into.
var reference = beneathList[passedWeights];
beneathList.RemoveAt(passedWeights);
stringWeight.RemoveAt(passedWeights);
beneathList.InsertRange(passedWeights, reference.beneathList);
stringWeight.InsertRange(passedWeights, reference.stringWeight);
}
}
return(this);
}
