Пример #1
0
        /// <summary>
        /// Adds the task to the selected list.  This method is invoked by the AddCommand.
        /// </summary>
        public void AddTask()
        {
            // add the selected task to the collection of selected tasks
            TaskTreeNodeViewModel taskNodeVM = SelectedNode as TaskTreeNodeViewModel;
            TaskViewModel         taskVM     = new TaskViewModel(_taskData.GetTaskByTaskId(taskNodeVM.NodeId), _taskData);

            SelectedTasks.Add(taskVM);

            RemoveTaskFromTree(taskNodeVM, taskVM);

            // clear the selected node
            SelectedNode = null;
        }
Пример #2
0
 void GongSolutions.Wpf.DragDrop.IDropTarget.Drop(DropInfo dropInfo)
 {
     if (dropInfo.Data is TaskViewModel)
     {
         // drop a task from the list view to the tree view
         TaskViewModel sourceTask = (TaskViewModel)dropInfo.Data;
         ((ListCollectionView)dropInfo.DragInfo.SourceCollection).Remove(sourceTask);
         AddTaskToTree(sourceTask);
     }
     else
     {
         // drop a task from the tree view to the list view
         TaskTreeNodeViewModel sourceTask = (TaskTreeNodeViewModel)dropInfo.Data;
         TaskViewModel         taskVM     = new TaskViewModel(_taskData.GetTaskByTaskId(sourceTask.NodeId), _taskData);
         RemoveTaskFromTree(sourceTask, taskVM);
         ((ListCollectionView)dropInfo.TargetCollection).AddNewItem(taskVM);
         ((ListCollectionView)dropInfo.TargetCollection).CommitNew();
     }
 }
Пример #3
0
        /// <summary>
        /// Remove the node and any empty ancestors from the tree
        /// </summary>
        void RemoveTaskFromTree(TaskTreeNodeViewModel taskNodeVM, TaskViewModel taskVM)
        {
            ITreeNodeContainerViewModel parent = taskNodeVM.Parent;

            if (parent != null)
            {
                _removedNodes.Add(taskVM, taskNodeVM);
                parent.ChildNodes.Remove(taskNodeVM);
                while (parent != null && parent.ChildNodes.Count == 0)
                {
                    ITreeNodeContainerViewModel child = parent;
                    parent = child.Parent;
                    if (parent != null)
                    {
                        parent.ChildNodes.Remove(child);
                    }
                }
            }
        }