xenadmin/XenAdmin/Commands/NewFolderCommand.cs

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using System;
using System.Collections.Generic;
using System.Text;
using XenAdmin.Network;
using XenAdmin.Model;
using System.Windows.Forms;
using XenAdmin.Properties;
using System.Drawing;
using XenAdmin.Dialogs;
using System.Collections.ObjectModel;
using System.Threading;
using XenAdmin.Actions;
using XenAPI;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Launches the dialog for creating a new folder.
    /// </summary>
    internal class NewFolderCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required if 
        /// this Command is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public NewFolderCommand()
        {
        }

        public NewFolderCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : base(mainWindow, selection)
        {
        }

        public NewFolderCommand(IMainWindow mainWindow, Folder folder)
            : base(mainWindow, folder)
        {
        }

        public NewFolderCommand(IMainWindow mainWindow, Folder folder, Control parent)
            : base(mainWindow, folder)
        {
            SetParent(parent);
        }

        private void Execute(Folder folder, IWin32Window ownerWindow)
        {
            IXenConnection connection;
            String name;

            // Different dialogs depending whether we're at the top level or adding a subfolder.
            // Also offer them a choice of connections if the connection they're on is Read Only
            // (although we will also sudo a Read Only command when the FolderAction is run).
            if (folder == null || folder.IsRootFolder || folder.Connection == null || CrossConnectionCommand.IsReadOnly(folder.Connection))
            {
                NameAndConnectionPrompt dialog = new NameAndConnectionPrompt();
                dialog.Text = Messages.NEW_FOLDER_DIALOG_TITLE;
                dialog.OKText = Messages.CREATE_MNEMONIC_R;
                dialog.HelpID = "NewFolderDialog";
                if (dialog.ShowDialog(ownerWindow) != DialogResult.OK)
                    return;
                name = dialog.PromptedName;
                connection = dialog.Connection;
            }
            else
            {
                name = InputPromptDialog.Prompt(ownerWindow, Messages.NEW_FOLDER_NAME, Messages.NEW_FOLDER_DIALOG_TITLE, "NewFolderDialog");
                connection = folder.Connection;
            }

            if (name == null)
                return;  // Happens if InputPromptDialog was cancelled

            List<string> newPaths = new List<string>();
            foreach (string s in name.Split(';'))
            {
                string n = s;
                Folders.FixupRelativePath(ref n);
                if (n == null || n == String.Empty)
                    continue;

                newPaths.Add(Folders.AppendPath(folder == null ? Folders.PATH_SEPARATOR : folder.opaque_ref, n));
            }

            if (newPaths.Count > 0)
            {
                FolderAction action = new FolderAction(connection, FolderAction.Kind.New, newPaths.ToArray());

                EventHandler<EventArgs> completed = null;
                completed = delegate
                {
                    action.Completed -= completed;
                    if (action.Succeeded)
                    {
                        Program.MainWindow.TrySelectNewNode(delegate(object o)
                        {
                            Folder ff = o as Folder;
                            return ff != null && newPaths[0] == ff.opaque_ref;
                        }, true, true, true);
                    }
                };

                action.Completed += completed;
                action.RunAsync();
            }
        }

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            Execute((Folder)selection[0].XenObject, Parent);
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            return selection.ContainsOneItemOfType<Folder>() && ConnectionAvailable();
        }

        private bool ConnectionAvailable()
        {
            foreach (IXenConnection connection in MainWindowCommandInterface.GetXenConnectionsCopy())
            {
                if (connection.IsConnected)
                    return true;
            }
            return false;
        }

        public override string MenuText
        {
            get
            {
                return Messages.NEW_FOLDER;
            }
        }

        public override Image MenuImage
        {
            get
            {
                return Resources._000_Folder_open_h32bit_16;
            }
        }

        protected override string GetCantExecuteReasonCore(SelectedItem item)
        {
            return ConnectionAvailable() ? base.GetCantExecuteReasonCore(item) : Messages.FOLDER_NO_CONNECTION;
        }
    }
}