VSPackge插件系列：常用IDE功能的封装

　　继上一篇VSPackge插件系列简单介绍如何正确的获取DTE之后，就一直没发VSPackge插件系列的文章了，最近同事也想了解如何在代码中与VS交互，特发一篇文章示例一些简单功能是如何调用，也以备以后查阅之用。

　　为了方便的调用vs的提供的服务，我这里写了一个类对vs的一些常用功能进行封装了，像什么当前选择项，当前编辑器，当前窗口，输出窗口的调用等等。还有解决方案里的选择改变事件的监听等等，更多功能还待挖掘中。

    public class Ide
    {

        private Ide()
        {
            _dte2 = (DTE2)ServiceProvider.GlobalProvider.GetService(typeof(DTE));
            _dte2.Events.SelectionEvents.OnChange += new _dispSelectionEvents_OnChangeEventHandler(SelectionEvents_OnChange);
        }

        #region Singlton

        private static Ide _Ide = new Ide();

        public static Ide Instance
        {
            get
            {
                return _Ide;
            }
        }
        #endregion

        #region Propertys

        private DTE2 _dte2 = null;

        public DTE2 DTE2
        {
            get
            {
                return _dte2;
            }
        }

        public Window ActiveWindow
        {
            get
            {
                CheckDTE();
                return _dte2.ActiveWindow;
            }
        }

        public Document ActiveDocument
        {
            get
            {
                CheckDTE();
                return _dte2.ActiveDocument;
            }
        }

        public IEnumerable<Project> ActiveProjects
        {
            get
            {
                CheckDTE();
                Array prjs = (Array)_dte2.ActiveSolutionProjects;
                foreach (var prj in prjs)
                {
                    yield return prj as Project;
                }

            }
        }

        public Project SelectedProject
        {
            get
            {
                if (ActiveProjects.Count() > )
                {
                    throw new Exception("Project is Multi-Selection");
                }
                return ActiveProjects.FirstOrDefault();
            }
        }

        public ToolWindows ToolWindows
        {
            get
            {
                CheckDTE();
                return _dte2.ToolWindows;
            }
        }

        /// <summary>
        /// 解决方案管理器中显示层次结构树数据的项
        /// </summary>
        public IEnumerable<UIHierarchyItem> ExplorerSelectedItems
        {
            get
            {
                CheckDTE();
                Array selectedItems = (Array)_dte2.ToolWindows.SolutionExplorer.SelectedItems;
                foreach (var item in selectedItems)
                {
                    yield return item as UIHierarchyItem;
                }

            }
        }

        /// <summary>
        /// 返回选择的工程或工程中的项
        /// </summary>
        public IEnumerable<SelectedItem> SelectedItems
        {
            get
            {
                CheckDTE();
                SelectedItems selectedItems = _dte2.SelectedItems;
                foreach (var item in selectedItems)
                {
                    yield return item as SelectedItem;
                }

            }
        }

        public StatusBar StatusBar
        {
            get
            {
                CheckDTE();
                return _dte2.StatusBar;
            }
        }

        public OutputWindowPane OutputWindow
        {
            get
            {
                var outpanes = ToolWindows.OutputWindow.OutputWindowPanes;
                foreach (OutputWindowPane pane in outpanes)
                {
                    if (pane.Name.Equals("GLIde"))
                    {
                        return pane;
                    }
                }
                return ToolWindows.OutputWindow.OutputWindowPanes.Add("GLIde");
            }
        }

        public ErrorList ErrorWindow
        {
            get
            {
                return ToolWindows.ErrorList;
            }
        }

        private void CheckDTE()
        {
            if (_dte2 == null)
            {
                throw new Exception("DTE service not found");
            }
        }
        #endregion

        #region Events

        public event Action<object, EventArgs> SelectionChanged;

        void SelectionEvents_OnChange()
        {
            if (SelectionChanged != null)
            {
                SelectionChanged(this, new EventArgs());
            }
        }

        #endregion

    }

    public static class Extentions
    {
        public static void WriteLine(this OutputWindowPane outputPane, string context)
        {
            outputPane.OutputString(context + Environment.NewLine);
        }
    }

这其中也参考了一篇比较旧的文章，看来研究VS的人不是甚多，不知道是何原因，还是各位大侠私藏了自己的技术。

http://www.cnblogs.com/dragon/archive/2005/04/01/130204.html

以下是调用示例代码，状态栏的文本提示，处理动画，获取选中项名称，获取当前选中工程，当前激活窗口等等。

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            Ide.Instance.StatusBar.Progress(true, "doing something", , );
            Ide.Instance.StatusBar.Animate(true, vsStatusAnimation.vsStatusAnimationDeploy);
            //Ide.Instance.StatusBar.Progress(false);

            tbDisplay.Text += "SelectedItems:" + Environment.NewLine;
            foreach (var item in Ide.Instance.SelectedItems)
            {
                tbDisplay.Text += item.Name + Environment.NewLine;
            }

            tbDisplay.Text += "ExplorerSelectedItems:" + Environment.NewLine;
            foreach (var item in Ide.Instance.ExplorerSelectedItems)
            {
                tbDisplay.Text += item.Name + Environment.NewLine;
            }

            tbDisplay.Text += "ActiveProjects:" + Environment.NewLine;
            foreach (var item in Ide.Instance.ActiveProjects)
            {
                tbDisplay.Text += item.Name + Environment.NewLine;
            }

            tbDisplay.Text += "ActiveWindow:" + Environment.NewLine;
            tbDisplay.Text += Ide.Instance.ActiveWindow.Caption + Environment.NewLine;

            //tbDisplay.Text += "ActiveDocument:" + Environment.NewLine;
            //tbDisplay.Text += Ide.Instance.ActiveDocument.Name + Environment.NewLine;

            //tbDisplay.Text += "SelectedProject:" + Environment.NewLine;
            //tbDisplay.Text += Ide.Instance.SelectedProject.Name + Environment.NewLine;

            Ide.Instance.OutputWindow.WriteLine("Hello world!");

        }

效果截图

欢迎各位提供更多的使用心得，共同进步！