public static IEnumerable <TreeIter> Childs(this TreeModel model, TreeIter parent)
{
List <TreeIter> childs = new List <TreeIter>();
if (parent.Equals(TreeIter.Zero))
{
for (int i = 0; i < model.IterNChildren(); i++)
{
TreeIter iter;
if (model.IterNthChild(out iter, i))
{
childs.Add(iter);
childs.AddRange(model.Childs(iter));
}
}
}
else
{
for (int i = 0; i < model.IterNChildren(parent); i++)
{
TreeIter iter;
if (model.IterNthChild(out iter, parent, i))
{
childs.Add(iter);
childs.AddRange(model.Childs(iter));
}
}
}
return(childs);
}
public override List <AppResult> Children(bool recursive = true)
{
if (resultIter == null || !resultIter.HasValue)
{
List <AppResult> children = new List <AppResult> ();
TModel.Foreach((m, p, i) => {
children.Add(new GtkTreeModelResult(ParentWidget, TModel, Column, i));
return(false);
});
return(children);
}
TreeIter currentIter = (TreeIter)resultIter;
if (!TModel.IterHasChild(currentIter))
{
return(null);
}
List <AppResult> newList = new List <AppResult> ();
for (int i = 0; i < TModel.IterNChildren(currentIter); i++)
{
TreeIter childIter;
if (TModel.IterNthChild(out childIter, currentIter, i))
{
newList.Add(new GtkTreeModelResult(ParentWidget, TModel, Column, childIter));
}
}
return(newList);
}
private void BuildGroupButtonsView()
{
TreeIter iter;
Logger.Debug("GroupWindow.BuildGroupButtonsView adding {0} groups",
groupTreeModel.IterNChildren());
// Loop through the model, create buttons, and add them into the
// groupButtonsVBox.
if (groupTreeModel.GetIterFirst(out iter))
{
do
{
PersonGroup group =
groupTreeModel.GetValue(iter, 0) as PersonGroup;
if (group == null)
{
continue;
}
AddGroupButton(new GroupButton(group),
groupTreeModel.GetPath(iter));
} while (groupTreeModel.IterNext(ref iter));
}
}
private bool IsSelectionValid(TreeIter selectedRow)
{
if (selectedRow.Equals(TreeIter.Zero))
{
return(false);
}
TreeModel model = treeViewMenu.Model;
if ((string)model.GetValue(selectedRow, 3) == KeyShortcuts.MENU_NEIGHBOURING_SHORTCUT)
{
int childrenCount = model.IterNChildren(selectedRow);
for (int i = 0; i < childrenCount; i++)
{
TreeIter row;
model.IterNthChild(out row, selectedRow, i);
if ((string)model.GetValue(row, 3) == KeyShortcuts.MENU_NEIGHBOURING_SHORTCUT &&
!((string)model.GetValue(row, 2)).Contains("/btn"))
{
return(false);
}
}
}
return(true);
}
void RenderElement(TreeViewColumn column, CellRenderer cell, TreeModel model, TreeIter iter)
{
var item = model.GetValue(iter, 0);
PlaysCellRenderer c = cell as PlaysCellRenderer;
c.Item = item;
c.Count = model.IterNChildren(iter);
}
protected override void RenderPlaylist(TreeViewColumn column, CellRenderer cell, TreeModel model, TreeIter iter)
{
var item = model.GetValue(iter, 0);
PlaysCellRenderer c = cell as PlaysCellRenderer;
c.Item = item;
c.Count = model.IterNChildren(iter);
}
List <AppResult> FetchIterChildren(TreeIter iter, GtkTreeModelResult result, bool recursive)
{
List <AppResult> newList = new List <AppResult> ();
if (!TModel.IterHasChild(iter))
{
return(newList);
}
GtkTreeModelResult previousSibling = null;
for (int i = 0; i < TModel.IterNChildren(iter); i++)
{
TreeIter childIter;
if (TModel.IterNthChild(out childIter, iter, i))
{
var child = new GtkTreeModelResult(ParentWidget, TModel, Column, childIter);
child.ParentNode = this;
child.PreviousSibling = previousSibling;
if (previousSibling != null)
{
previousSibling.NextSibling = child;
}
newList.Add(child);
if (recursive)
{
var childrenIter = FetchIterChildren(childIter, child, recursive);
newList.AddRange(childrenIter);
child.FirstChild = childrenIter.FirstOrDefault();
}
previousSibling = child;
}
}
result.FirstChild = newList.FirstOrDefault();
DisposeWithResult(result.FirstChild);
return(newList);
}
// Widget: tvBgList
// Don't show sections that are empty
private bool FilterEmptySections(TreeModel model, TreeIter iter)
{
TreeIter parent;
string key = (string) model.GetValue(iter, 0);
// Always draw all wallpapers
if (key != null)
return true;
if (model.IterParent(out parent, iter)) {
if (model.IterNChildren(parent) >= 2)
return false;
}
return true;
}
protected void RenderElement(TreeViewColumn column, CellRenderer cell, TreeModel model, TreeIter iter)
{
var item = model.GetValue (iter, 0);
PlaysCellRenderer c = cell as PlaysCellRenderer;
c.Item = item;
c.Count = model.IterNChildren (iter);
}
private void OnDataRowDeleted(object o, RowDeletedArgs args)
{
if (model == null || args.Path == null)
{
return;
}
bool sel_paths_changed = false;
// Don't update the real n_cells, as doing this will
// throw off ScrollToPath if called before SizeAllocate
// is run
int n_cells = model.IterNChildren();
for (int i = 0; i < selected_paths.Count; i++)
{
TreePath path = (TreePath)selected_paths[i];
int cmp = path.Compare(args.Path);
if (cmp == 0)
{
selected_paths.RemoveAt(i);
i--;
sel_paths_changed = true;
continue;
}
// decrement each path that follows the one we
// just deleted
if (cmp > 0)
{
path.Prev();
selected_paths[i] = path;
continue;
}
}
if (sel_paths_changed && SelectionChanged != null)
{
SelectionChanged(this, new EventArgs());
}
if (focused_path != null &&
focused_path.Equals(args.Path))
{
focused_path = focused_path.Copy();
// try to advance the focus forward
focused_path.Next();
if (!PathIsValid(focused_path, n_cells) &&
!focused_path.Prev())
{
focused_path = null;
}
}
if (selection_anchor != null &&
selection_anchor.Equals(args.Path))
{
selection_anchor = null;
}
QueueResize();
}
private void FocusHelper(bool move_next)
{
if (focused_path == null)
{
return;
}
TreeIter focused_iter;
if (!model.GetIter(out focused_iter, focused_path))
{
return;
}
int focus_x, focus_y;
GetPlotPoint(focused_iter, out focus_x, out focus_y);
// we can't just do focused_path.Prev () since there is
// a disconnect between the order in the model and
// where the axis has us place points. besides, we
// need to clamp the focus region to the zoom rect.
TreeIter iter;
if (!model.GetIterFirst(out iter))
{
return;
}
int total_height = (Allocation.Y + Allocation.Height);
TreePath min_path = null;
int min_x_delta = Int32.MaxValue;
int min_y_delta = Int32.MaxValue;
do
{
TreePath path = model.GetPath(iter);
// don't try to focus the same point again
if (path.Compare(focused_path) == 0)
{
continue;
}
int x, y;
GetPlotPoint(iter, out x, out y);
// if its out of bounds, throw it out
if (IsBarOutOfBounds(x, y))
{
continue;
}
int x_delta = 0, y_delta = 0;
if (move_next)
{
// find the bar with the smallest positive x
// delta, and smallest y, or if there
// is a tie, the one that's larger on the y
// axis
x_delta = x - focus_x;
y_delta = (focus_x != x) ? total_height - y : focus_y - y;
}
else
{
// find the bar with the smallest positive x
// delta, and largest y, or if there
// is a tie, the one that's larger on the y
// axis
x_delta = focus_x - x;
y_delta = (focus_x != x) ? y : y - focus_y;
}
// don't go backward, and don't pick a bigger
// delta than we already have
if (x_delta < 0 ||
x_delta > min_x_delta)
{
continue;
}
if (x_delta == min_x_delta &&
y_delta >= min_y_delta)
{
continue;
}
// if we're at the same X value, make sure
// we're moving forward in the y direction so
// we don't get stuck in loops
if (x_delta == 0 &&
y_delta < 0)
{
continue;
}
min_x_delta = x_delta;
min_y_delta = y_delta;
min_path = path;
} while (model.IterNext(ref iter));
if (min_path != null)
{
focused_path = min_path;
}
else
{
if (move_next)
{
focused_path = TreePath.NewFirst();
}
else
{
focused_path = new TreePath(new int[] {
model.IterNChildren() - 1
});
}
}
if (Changed != null)
{
Changed(this, new EventArgs());
}
}
