www.pudn.com > wxwinter2.rar > wxdWFMenu.cs


using System;
using System.IO;
using System.Text;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Collections;
using System.ComponentModel;
using System.Collections.Generic;
using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Windows.Forms;
using System.Drawing;

namespace wxwinter.wf.Design
{
//ÏÔʾÓÒ¼ü²Ëµ¥
public sealed class wxdWFMenu : MenuCommandService
{
public wxdWFMenu(IServiceProvider serviceProvider)
: base(serviceProvider)
{
}

public override void ShowContextMenu(CommandID menuID, int x, int y)
{
if (menuID == WorkflowMenuCommands.SelectionMenu)
{
ContextMenu contextMenu = new ContextMenu();

foreach (DesignerVerb verb in Verbs)
{
MenuItem menuItem = new MenuItem(verb.Text, new EventHandler(OnMenuClicked));
menuItem.Tag = verb;
contextMenu.MenuItems.Add(menuItem);
}

MenuItem[] items = GetSelectionMenuItems();
if (items.Length > 0)
{
contextMenu.MenuItems.Add(new MenuItem("-"));
foreach (MenuItem item in items)
contextMenu.MenuItems.Add(item);
}

WorkflowView workflowView = GetService(typeof(WorkflowView)) as WorkflowView;
if (workflowView != null)
contextMenu.Show(workflowView, workflowView.PointToClient(new Point(x, y)));
}
}

private void OnMenuClicked(object sender, EventArgs e)
{
MenuItem menuItem = sender as MenuItem;
if (menuItem != null &amt;&amt; menuItem.Tag is MenuCommand)
{
MenuCommand command = menuItem.Tag as MenuCommand;
command.Invoke();
}
}

private MenuItem[] GetSelectionMenuItems()
{
List<MenuItem> menuItems = new List<MenuItem>();

bool addMenuItems = true;
ISelectionService selectionService = GetService(typeof(ISelectionService)) as ISelectionService;
if (selectionService != null)
{
foreach (object obj in selectionService.GetSelectedComponents())
{
if (!(obj is Activity))
{
addMenuItems = false;
break;
}
}
}

if (addMenuItems)
{
Dictionary<CommandID, string> selectionCommands = new Dictionary<CommandID, string>();
selectionCommands.Add(WorkflowMenuCommands.Cut, "¼ôÇÐ");
selectionCommands.Add(WorkflowMenuCommands.Copy, "¸´ÖÆ");
selectionCommands.Add(WorkflowMenuCommands.Paste, "Õ³Ìù");
selectionCommands.Add(WorkflowMenuCommands.Delete, "ɾ³ý");



foreach (CommandID id in selectionCommands.Keys)
{
MenuCommand command = FindCommand(id);
if (command != null)
{
MenuItem menuItem = new MenuItem(selectionCommands[id], new EventHandler(OnMenuClicked));
menuItem.Tag = command;
menuItems.Add(menuItem);
}
}
}

return menuItems.ToArray();
}
}
}