private void OnTreeViewItemMouseMove(object sender, MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
draggedItem = null;
Point currentPosition = e.GetPosition(InternalTreeView);
LibraryItemViewModel draggedView = (LibraryItemViewModel)InternalTreeView.SelectedItem;
if (draggedView != null)
{
draggedItem = draggedView.LibraryItem;
}
if ((draggedItem != null) && (draggedItem.Level > 0))
{
DragDropEffects dragEffect;
while ((draggedItem.ItemType == NodeType.None) && (draggedItem.Children != null))
{
draggedItem = draggedItem.Children[0];
}
if (draggedItem.ItemType != NodeType.None)
{
dragEffect = DragDrop.DoDragDrop(InternalTreeView, draggedItem,
DragDropEffects.Move);
}
}
}
}
private LibraryItemViewModel(LibraryItem libraryItem, LibraryItemViewModel parent, LibraryView libraryView)
{
this.libraryView = libraryView;
this.libraryItem = libraryItem;
this.parent = parent;
this.children = new ObservableCollection <LibraryItemViewModel>();
this.isExpanded = false;
this.isSelected = false;
this.visibility = Visibility.Visible;
//this.header = new List<LibraryView.DecoratedString>();
//LibraryView.DecoratedString item = new LibraryView.DecoratedString();
//item.isHilighted = false;
//item.text = this.libraryItem.DisplayText;
//this.header.Add(item);
this.prePiece = this.libraryItem.DisplayText;
this.highlightPiece = string.Empty;
this.postPiece = string.Empty;
if (this.libraryItem.Children != null && this.libraryItem.Children.Count > 0)
{
foreach (LibraryItem childItem in libraryItem.Children)
{
this.children.Add(new LibraryItemViewModel(childItem, this, libraryView));
}
}
}
private void OnTreeViewItemAddToCanvas(object sender, RoutedEventArgs e)
{
LibraryItemViewModel libraryItem = ((MenuItem)sender).DataContext as LibraryItemViewModel;
if (libraryItem != null)
{
graphControl.CurrentGraphCanvas.VisualHost.HandleAddNodeToCanvas(libraryItem.LibraryItem);
}
}
private void HighlightItemHeader(LibraryItemViewModel libraryItem)
{
String displayText = libraryItem.DisplayText.ToLower();
int index = displayText.IndexOf(keyword.ToLower());
libraryItem.PrePiece = libraryItem.DisplayText.Substring(0, index);
libraryItem.HighlightPiece = libraryItem.DisplayText.Substring(index, keyword.Count());
libraryItem.PostPiece = libraryItem.DisplayText.Substring(index + keyword.Count());
}
private bool UpdateTreeViewItem(LibraryItemViewModel libraryItem)
{
//if (libraryItem.Children.Count < 1)
// return false;
bool isChildVisible = false;
// update child
foreach (LibraryItemViewModel childItem in libraryItem.Children)
{
bool isVisible = false;
isVisible = UpdateTreeViewItem(childItem);
if (isVisible)
{
isChildVisible = true;
}
}
if (libraryItem.Visibility == Visibility.Visible)
{
// libraryItem matches the search keyword, highlight the text
HighlightItemHeader(libraryItem);
// if the root is the fully match the search keywords, then all the child of the root should be shown
if (libraryItem.DisplayText.ToLower() == keyword.ToLower())
{
ExpandChildItem(libraryItem);
}
else if (isChildVisible)
{
libraryItem.IsExpanded = true;
}
}
else
{
ResetItemHeader(libraryItem);
if (isChildVisible) //if there is child that is visible, the root should be visible as well,
{
libraryItem.Visibility = Visibility.Visible;
libraryItem.IsExpanded = true;
}
else if (libraryItem.Level == 0)
{
libraryItem.Visibility = Visibility.Visible;
}
else
{
libraryItem.Visibility = Visibility.Collapsed;
return(false); // when there is no child visible and it self is not visible, the whole item is hidden
}
}
return(true);
}
private void OnTreeViewItemRefresh(object sender, RoutedEventArgs e)
{
LibraryItemViewModel libraryItem = ((MenuItem)sender).DataContext as LibraryItemViewModel;
if (libraryItem == null)
{
return;
}
ClassFactory.CurrCoreComponent.RefreshAssembly(libraryItem.DisplayText);
}
private void OnTreeViewItemCollapse(object sender, RoutedEventArgs e)
{
LibraryItemViewModel libraryItem = ((MenuItem)sender).DataContext as LibraryItemViewModel;
if (libraryItem == null)
{
return;
}
libraryItem.IsSelected = true;
libraryItem.IsExpanded = false;
}
private void ResetTreeView()
{
libraryTree.RootItems[0].Visibility = Visibility.Collapsed;
for (int i = 1; i < libraryTree.RootItems.Count; i++)
{
LibraryItemViewModel libraryItem = libraryTree.RootItems[i];
ResetTreeViewItem(libraryItem);
libraryItem.Visibility = Visibility.Visible;
libraryItem.IsExpanded = false;
ResetItemHeader(libraryItem);
}
}
private void OnTreeViewItemDoubleClick(object sender, MouseEventArgs e)
{
LibraryItemViewModel selectedItem = ((TreeViewItem)sender).Header as LibraryItemViewModel;
if (selectedItem != null)
{
LibraryItem selectedLibraryItem = selectedItem.LibraryItem;
if (selectedLibraryItem.ItemType != NodeType.None)
{
graphControl.CurrentGraphCanvas.VisualHost.HandleAddNodeToCanvas(selectedLibraryItem);
}
}
e.Handled = true;
}
private void OnTreeViewItemExpandCollapse(object sender, MouseEventArgs e)
{
LibraryItemViewModel libraryItem = null;
TreeViewItem treeViewItem = ((Border)sender).TemplatedParent as TreeViewItem;
if (treeViewItem != null)
{
libraryItem = treeViewItem.Header as LibraryItemViewModel;
}
if (libraryItem == null)
{
return;
}
libraryItem.IsSelected = true;
if (libraryItem.Children != null && libraryItem.Children.Count > 0)
{
if (libraryItem.IsExpanded && libraryItem.IsChildVisible)
{
libraryItem.IsExpanded = false;
}
else
{
libraryItem.IsExpanded = true;
// make the filtered out item visible
ExpandChildItem(libraryItem);
}
}
//Request Bring into View
if (libraryItem.IsExpanded && libraryItem.Level == 0)
{
internalRequestBeingIntoView = true;
treeViewItem.BringIntoView();
// to ensure the header of the item is shown
Border bd = FindVisualChild <Border>(treeViewItem, "Exp");
if (bd != null)
{
internalRequestBeingIntoView = true;
bd.BringIntoView();
}
}
e.Handled = true;
}
private void ResetTreeViewItem(LibraryItemViewModel libraryItem)
{
if (libraryItem.Children.Count <= 0)
{
return;
}
foreach (LibraryItemViewModel childItem in libraryItem.Children)
{
ResetTreeViewItem(childItem);
childItem.Visibility = Visibility.Visible;
childItem.IsExpanded = false;
ResetItemHeader(childItem);
}
}
private void ExpandAllChildItem(LibraryItemViewModel libraryItem)
{
if (libraryItem.Children.Count <= 0)
{
return;
}
foreach (LibraryItemViewModel childItem in libraryItem.Children)
{
childItem.Visibility = Visibility.Visible;
ExpandAllChildItem(childItem);
}
libraryItem.IsExpanded = true;
}
private int GetExpansionLevel()
{
int maxExpansionLevel = -1;
for (int i = 1; i < libraryTree.RootItems.Count; i++)
{
LibraryItemViewModel item = libraryTree.RootItems[i];
int expansionLevel = GetExpansionLevel(item);
if (maxExpansionLevel < expansionLevel)
{
maxExpansionLevel = expansionLevel;
}
}
return(maxExpansionLevel);
}
private void OnTreeViewItemExpand(object sender, RoutedEventArgs e)
{
LibraryItemViewModel libraryItem = ((MenuItem)sender).DataContext as LibraryItemViewModel;
if (libraryItem == null)
{
return;
}
libraryItem.IsSelected = true;
if (!libraryItem.IsExpanded)
{
libraryItem.IsExpanded = true;
ExpandChildItem(libraryItem);
}
}
private void InitializeSearchList(LibraryItemViewModel libraryItem)
{
if (libraryItem.Children == null)
{
return;
}
foreach (LibraryItemViewModel item in libraryItem.Children)
{
SearchItem searchItem = new SearchItem();
searchItem.searchItem = item;
searchItem.searchName = item.DisplayText.ToLower(); //ignore the letter case
searchList.Add(searchItem);
InitializeSearchList(item);
}
}
private void ToggleLibraryItem(LibraryItemViewModel libraryItem, ExpansionFlag expansion)
{
bool expanded = expansion == ExpansionFlag.DeepExpanded;
foreach (LibraryItemViewModel item in libraryItem.Children)
{
item.IsExpanded = expanded;
if (item.Children.Count > 0)
{
ToggleLibraryItem(item, expansion);
}
if (expanded) // expand overloaded method
{
ExpandChildItem(item);
}
}
}
public LibraryTreeViewModel(LibraryItem libary, LibraryView libraryView)
{
this.libraryView = libraryView;
this.libary = new LibraryItemViewModel(libary, libraryView);
rootItems = new ObservableCollection <LibraryItemViewModel>();
foreach (LibraryItem rootItem in libary.Children)
{
rootItems.Add(new LibraryItemViewModel(rootItem, libraryView));
}
if (rootItems[0].DisplayText == Configurations.NoResultMessage)
{
rootItems[0].Visibility = Visibility.Collapsed;
}
}
private void UpdateTreeView()
{
for (int i = 1; i < libraryTree.RootItems.Count(); i++)
{
UpdateTreeViewItem(libraryTree.RootItems[i]);
}
LibraryItemViewModel notFoundItem = libraryTree.RootItems[0];
if (resultList.Count() == 0)
{
notFoundItem.Visibility = Visibility.Visible;
for (int i = 1; i < libraryTree.RootItems.Count(); i++)
{
libraryTree.RootItems[i].Visibility = Visibility.Collapsed;
}
}
else
{
notFoundItem.Visibility = Visibility.Collapsed;
}
}
private void ExpandChildItem(LibraryItemViewModel libraryItem)
{
if (libraryItem.Children.Count <= 0)
{
return;
}
// Set the visibility to true to all the child
// (applies to items expand items after search)
// Expand the child if it's a overload folder
foreach (LibraryItemViewModel childItem in libraryItem.Children)
{
childItem.Visibility = Visibility.Visible;
// expand overloaded method
if (childItem.Children != null && childItem.Children.Count > 0 && childItem.IsOverloaded)
{
ExpandChildItem(childItem);
}
}
libraryItem.IsExpanded = true;
}
private int GetExpansionLevel(LibraryItemViewModel libraryItem)
{
int MaxChildExpansionLevel = -1;
if (libraryItem.Children.Count < 1 || !libraryItem.IsExpanded)
{
return(1);
}
if (libraryItem.IsExpanded && libraryItem.IsOverloaded) // overloaded function folder
{
return(1);
}
foreach (LibraryItemViewModel item in libraryItem.Children)
{
int childExpansionLevel = GetExpansionLevel(item);
if (MaxChildExpansionLevel < childExpansionLevel)
{
MaxChildExpansionLevel = childExpansionLevel;
}
}
return(MaxChildExpansionLevel + 1);
}
private void ResetItemHeader(LibraryItemViewModel libraryItem)
{
libraryItem.PrePiece = libraryItem.DisplayText;
libraryItem.HighlightPiece = string.Empty;
libraryItem.PostPiece = string.Empty;
}