/// <summary>
/// This method is made Internal for testing purposes.
/// </summary>
internal void HighlightStartingMatch(TextBlock textBlock, string userInput, HighlightStyle styleInfo)
{
string text = textBlock.Text;
if (!text.StartsWith(userInput, this.comparisonMode))
{
return;
}
textBlock.Inlines.Clear();
Run firstRun = SuggestionItem.GetRunFromStyle(styleInfo);
firstRun.Text = text.Substring(0, userInput.Length);
textBlock.Inlines.Add(firstRun);
this.highlightedRuns.Add(new KeyValuePair <Run, HighlightStyle>(firstRun, styleInfo));
int remainingLength = text.Length - userInput.Length;
if (remainingLength != 0)
{
Run secondRun = new Run();
secondRun.Text = text.Substring(userInput.Length, remainingLength);
textBlock.Inlines.Add(secondRun);
}
}
internal void PrepareContainerForSuggestionItem(DependencyObject element, object item)
{
SuggestionItem suggestionItem = element as SuggestionItem;
suggestionItem.Attach(this, item);
suggestionItem.HighlightInput(this.owner.suggestionsProvider.InputString);
}
internal void OnItemTapped(SuggestionItem item)
{
if (this.ItemTapped != null)
{
this.ItemTapped(this, new SuggestionItemTappedEventArgs()
{
Item = item.DataItem
});
}
}
/// <summary>
/// This method is made Internal for testing purposes.
/// </summary>
internal void HighlightAllMatches(TextBlock textBlock, string userInput, HighlightStyle styleInfo)
{
string text = textBlock.Text;
int indexOfOccurance = text.IndexOf(userInput, this.comparisonMode);
if (indexOfOccurance == -1)
{
return;
}
textBlock.Inlines.Clear();
int portionStart = 0;
while (indexOfOccurance != -1)
{
string firstTextPortion = text.Substring(portionStart, indexOfOccurance - portionStart);
if (!string.IsNullOrEmpty(firstTextPortion))
{
Run firstRun = new Run();
firstRun.Text = firstTextPortion;
textBlock.Inlines.Add(firstRun);
}
Run highLightedRun = SuggestionItem.GetRunFromStyle(styleInfo);
highLightedRun.Text = text.Substring(indexOfOccurance, userInput.Length);
textBlock.Inlines.Add(highLightedRun);
this.highlightedRuns.Add(new KeyValuePair <Run, HighlightStyle>(highLightedRun, styleInfo));
int nextOccuranceIndex = text.IndexOf(userInput, indexOfOccurance + userInput.Length, this.comparisonMode);
if (nextOccuranceIndex == -1)
{
int lastPortionStart = indexOfOccurance + userInput.Length;
string lastPortion = text.Substring(lastPortionStart, text.Length - lastPortionStart);
if (!string.IsNullOrEmpty(lastPortion))
{
Run lastRun = new Run();
lastRun.Text = lastPortion;
textBlock.Inlines.Add(lastRun);
}
}
else
{
portionStart = indexOfOccurance + userInput.Length;
}
indexOfOccurance = nextOccuranceIndex;
}
}
