private void GenericLibraryExplorerItemControl_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
item = e.NewValue as GenericLibraryExplorerItem;
if (null != item)
{
ObjCaption.Text = String.Format("{0} ({1})", item.tag, item.fingerprints.Count);
ObjCaption.Background = item.IsSelected ? ThemeColours.Background_Brush_Blue_VeryDarkToDark : Brushes.Transparent;
ObjCaption.Foreground = item.IsSelected ? Brushes.Black : Brushes.Black;
ObjChecked.IsChecked = item.IsSelected;
}
else
{
ObjCaption.Text = null;
ObjCaption.Background = Brushes.Transparent;
ObjCaption.Foreground = Brushes.Black;
ObjChecked.IsChecked = false;
}
}
private void PopulateItems()
{
bool exclusive = ObjBooleanAnd.IsChecked ?? true;
bool is_negated = ObjBooleanNot.IsChecked ?? false;
MultiMapSet <string, string> tags_with_fingerprints_ALL = GetNodeItems(this.library, null);
MultiMapSet <string, string> tags_with_fingerprints = tags_with_fingerprints_ALL;
// If this is exclusive mode, we want to constrain the list of items in the tree
if (!is_negated && exclusive && 0 < selected_tags.Count)
{
bool first_set = true;
HashSet <string> exclusive_fingerprints = new HashSet <string>();
foreach (string selected_tag in selected_tags)
{
if (first_set)
{
first_set = false;
exclusive_fingerprints.UnionWith(tags_with_fingerprints_ALL.Get(selected_tag));
}
else
{
exclusive_fingerprints.IntersectWith(tags_with_fingerprints_ALL.Get(selected_tag));
}
}
tags_with_fingerprints = GetNodeItems(this.library, exclusive_fingerprints);
}
// Filter them by the user filter
List <string> tags_eligible = null;
if (!String.IsNullOrEmpty(TxtSearchTermsFilter.Text))
{
string filter_set = TxtSearchTermsFilter.Text.ToLower();
string[] filters = filter_set.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < filters.Length; ++i)
{
filters[i] = filters[i].Trim();
}
tags_eligible = new List <string>();
foreach (string tag in tags_with_fingerprints.Keys)
{
string tag_lower = tag.ToLower();
foreach (string filter in filters)
{
if (tag_lower.Contains(filter))
{
tags_eligible.Add(tag);
break;
}
}
}
}
else
{
tags_eligible = new List <string>(tags_with_fingerprints.Keys);
}
// Sort the tags
List <string> tags_sorted = new List <string>(tags_eligible);
if (ObjSort.IsChecked ?? false)
{
tags_sorted.Sort(delegate(string tag1, string tag2)
{
return(tags_with_fingerprints[tag2].Count - tags_with_fingerprints[tag1].Count);
});
}
else
{
tags_sorted.Sort();
}
// Create the tag list to bind to
List <GenericLibraryExplorerItem> displayed_items = new List <GenericLibraryExplorerItem>();
foreach (string tag in tags_sorted)
{
GenericLibraryExplorerItem item = new GenericLibraryExplorerItem
{
GenericLibraryExplorerControl = this,
library = this.library,
tag = tag,
fingerprints = tags_with_fingerprints[tag],
OnItemDragOver = this.OnItemDragOver,
OnItemDrop = this.OnItemDrop,
OnItemPopup = this.OnItemPopup,
IsSelected = selected_tags.Contains(tag)
};
displayed_items.Add(item);
}
// Bind baby bind - tag list
TreeSearchTerms.DataContext = displayed_items;
// Populate the chart
PopulateChart(tags_with_fingerprints);
// Then we have to list the associated documents
HashSet <string> fingerprints = new HashSet <string>();
if (0 < selected_tags.Count)
{
if (exclusive)
{
bool first_set = true;
foreach (string selected_tag in selected_tags)
{
if (first_set)
{
fingerprints.UnionWith(tags_with_fingerprints.Get(selected_tag));
}
else
{
fingerprints.IntersectWith(tags_with_fingerprints.Get(selected_tag));
}
}
}
else
{
foreach (string selected_tag in selected_tags)
{
fingerprints.UnionWith(tags_with_fingerprints.Get(selected_tag));
}
}
}
// Implement the NEGATION
if (is_negated && 0 < fingerprints.Count)
{
HashSet <string> negated_fingerprints = this.library.GetAllDocumentFingerprints();
fingerprints = new HashSet <string>(negated_fingerprints.Except(fingerprints));
}
// And build a description of them
// Build up the descriptive span
Span descriptive_span = new Span();
if (!String.IsNullOrEmpty(description_title))
{
Bold bold = new Bold();
bold.Inlines.Add(description_title);
descriptive_span.Inlines.Add(bold);
descriptive_span.Inlines.Add(": ");
}
string separator = exclusive ? " AND " : " OR ";
if (is_negated)
{
descriptive_span.Inlines.Add("NOT [ ");
}
descriptive_span.Inlines.Add(StringTools.ConcatenateStrings(selected_tags, separator, 0));
if (is_negated)
{
descriptive_span.Inlines.Add(" ] ");
}
descriptive_span.Inlines.Add(" ");
descriptive_span.Inlines.Add(LibraryFilterHelpers.GetClearImageInline("Clear this filter.", hyperlink_clear_all_OnClick));
if (null != OnTagSelectionChanged)
{
OnTagSelectionChanged(fingerprints, descriptive_span);
}
}