mcs/class/referencesource/System.WorkflowServices/System/Workflow/Activities/Design/OperationPickerDialog.cs

   1 //------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //------------------------------------------------------------
   4
   5 namespace System.Workflow.Activities.Design
   6 {
   7     using System;
   8     using System.Collections.Generic;
   9     using System.ComponentModel;
  10     using System.Drawing;
  11     using System.Reflection;
  12     using System.Runtime;
  13     using System.ServiceModel;
  14     using System.Windows.Forms;
  15     using System.Windows.Forms.Design;
  16     using System.Workflow.Activities;
  17     using System.Workflow.ComponentModel;
  18     using System.Workflow.ComponentModel.Design;
  19
  20     partial class OperationPickerDialog : Form
  21     {
  22         private OperationInfoBase selectedOperation;
  23         private ServiceContractListItemList serviceContracts;
  24         private IServiceProvider serviceProvider = null;
  25
  26         public OperationPickerDialog(IServiceProvider serviceProvider, bool allowNewContracts)
  27         {
  28             if (serviceProvider == null)
  29             {
  30                 throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("serviceProvider");
  31             }
  32             this.serviceProvider = serviceProvider;
  33             //Set dialog fonts
  34             IUIService uisvc = (IUIService) this.serviceProvider.GetService(typeof(IUIService));
  35             if (uisvc != null)
  36             {
  37                 this.Font = (Font) uisvc.Styles["DialogFont"];
  38             }
  39             InitializeComponent();
  40             this.serviceContracts = new ServiceContractListItemList(this.operationsListBox);
  41             this.operationsListBox.ServiceProvider = this.serviceProvider;
  42             this.toolStripButton1.Visible = allowNewContracts;
  43         }
  44
  45         public OperationInfoBase SelectedOperation
  46         {
  47             get
  48             {
  49                 return selectedOperation;
  50             }
  51             internal set
  52             {
  53                 if (value == null)
  54                 {
  55                     throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
  56                 }
  57                 selectedOperation = value;
  58                 SelectServiceOperation(value);
  59             }
  60         }
  61
  62         public void AddServiceOperation(OperationInfoBase operationInfo, Activity implementingActivity)
  63         {
  64             if (operationInfo == null)
  65             {
  66                 throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("operationInfo");
  67             }
  68
  69             TypedOperationInfo typedOperationInfo = operationInfo as TypedOperationInfo;
  70             OperationInfo workflowOperationInfo = operationInfo as OperationInfo;
  71             string contractName = operationInfo.GetContractFullName(null);
  72             // Do not add operation if the contractName is not valid. Not throwing here gives the user to fix
  73             // a broken contract/operation by selecting a different operation from the UI.
  74             if (String.IsNullOrEmpty(contractName))
  75             {
  76                 return;
  77             }
  78             ServiceContractListItem serviceContract = this.serviceContracts.Find(contractName);
  79
  80             if (typedOperationInfo != null)
  81             {
  82                 if (serviceContract == null)
  83                 {
  84                     serviceContract = new ServiceContractListItem(this.operationsListBox);
  85                     serviceContract.Validating += new CancelEventHandler(ServiceContractValidating);
  86                     serviceContract.Name = contractName;
  87                     serviceContract.ContractType = typedOperationInfo.ContractType;
  88                     serviceContract.IsCustomContract = false;
  89                     AddServiceContract(serviceContract);
  90                 }
  91
  92                 TypedServiceOperationListItem operationItem = new TypedServiceOperationListItem();
  93                 operationItem.Validating += new CancelEventHandler(ServiceOperationValidating);
  94                 operationItem.Name = typedOperationInfo.Name;
  95                 operationItem.Operation = typedOperationInfo;
  96
  97                 operationItem.ImplementingActivities.Add(implementingActivity);
  98                 serviceContract.AddOperation(operationItem);
  99             }
 100             else if (workflowOperationInfo != null)
 101             {
 102                 if (serviceContract == null)
 103                 {
 104                     serviceContract = new ServiceContractListItem(this.operationsListBox);
 105                     serviceContract.Validating += new CancelEventHandler(ServiceContractValidating);
 106                     serviceContract.Name = workflowOperationInfo.ContractName;
 107                     serviceContract.IsCustomContract = true;
 108                     AddServiceContract(serviceContract);
 109                 }
 110                 WorkflowServiceOperationListItem workflowOperationItem = new WorkflowServiceOperationListItem();
 111                 workflowOperationItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 112                 workflowOperationItem.Operation = workflowOperationInfo;
 113                 workflowOperationItem.ImplementingActivities.Add(implementingActivity);
 114                 serviceContract.AddOperation(workflowOperationItem);
 115             }
 116
 117         }
 118
 119         protected override void OnHelpButtonClicked(CancelEventArgs e)
 120         {
 121             e.Cancel = true;
 122             GetHelp();
 123         }
 124
 125         protected override void OnHelpRequested(HelpEventArgs e)
 126         {
 127             e.Handled = true;
 128             GetHelp();
 129         }
 130
 131         private void AddHelpListItem()
 132         {
 133             if (this.operationsListBox.Items.Count == 0)
 134             {
 135                 this.operationsListBox.Items.Add(new HelpListItem());
 136             }
 137         }
 138
 139         private void addOperationButton_Click(object sender, EventArgs e)
 140         {
 141             ServiceContractListItem serviceContractListItem = this.operationsListBox.SelectedItem as ServiceContractListItem;
 142             Fx.Assert(serviceContractListItem != null, "service contract list item cannot be null");
 143             Fx.Assert(serviceContractListItem.IsCustomContract, " this should work only on a custom contract item");
 144             WorkflowServiceOperationListItem newWorkflowServiceOperationListItem = serviceContractListItem.CreateOperation();
 145             newWorkflowServiceOperationListItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 146             this.AddServiceOperation(newWorkflowServiceOperationListItem);
 147             serviceContractListItem.SelectionOperation(newWorkflowServiceOperationListItem);
 148         }
 149
 150         private void AddServiceContract(ServiceContractListItem serviceContractListItem)
 151         {
 152             String key = serviceContractListItem.Name;
 153             if (this.serviceContracts.Find(key) == null)
 154             {
 155                 RemoveHelpListItem();
 156                 serviceContracts.Add(serviceContractListItem);
 157                 operationsListBox.Items.Add(serviceContractListItem);
 158             }
 159         }
 160         private void AddServiceOperation(ServiceOperationListItem serviceOperation)
 161         {
 162             if (serviceOperation == null)
 163             {
 164                 throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("serviceOperation");
 165             }
 166             String key = serviceOperation.ContractName;
 167             ServiceContractListItem serviceContract = this.serviceContracts.Find(key);
 168             serviceContract.AddOperation(serviceOperation);
 169             serviceContract.SelectionOperation(serviceOperation);
 170         }
 171
 172         private void cancelButton_Click(object sender, EventArgs e)
 173         {
 174             this.DialogResult = DialogResult.Cancel;
 175             this.Close();
 176         }
 177
 178         private void GetHelp()
 179         {
 180             DesignerHelpers.ShowHelpFromKeyword(this.serviceProvider, typeof(OperationPickerDialog).FullName + ".UI");
 181         }
 182         private List<MethodInfo> GetMethodsFromInterface(Type serviceContractInterfaceType)
 183         {
 184             List<MethodInfo> methodInfos = new List<MethodInfo>();
 185             Queue<Type> interfacesQueue = new Queue<Type>();
 186             List<Type> interfacesList = new List<Type>();
 187             interfacesQueue.Enqueue(serviceContractInterfaceType);
 188
 189             while (interfacesQueue.Count > 0)
 190             {
 191                 Type currentInterfaceType = interfacesQueue.Dequeue();
 192                 interfacesList.Add(currentInterfaceType);
 193                 foreach (Type baseInteface in currentInterfaceType.GetInterfaces())
 194                 {
 195                     if (!interfacesList.Contains(baseInteface))
 196                     {
 197                         interfacesQueue.Enqueue(baseInteface);
 198                     }
 199                 }
 200                 methodInfos.AddRange(currentInterfaceType.GetMethods());
 201             }
 202             return methodInfos;
 203         }
 204
 205         private void ImportContract(Type serviceContractType)
 206         {
 207
 208             foreach (MethodInfo methodInfo in GetMethodsFromInterface(serviceContractType))
 209             {
 210                 if (!ServiceOperationHelpers.IsValidServiceOperation(methodInfo))
 211                 {
 212                     continue;
 213                 }
 214                 TypedServiceOperationListItem operationItem = new TypedServiceOperationListItem();
 215                 operationItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 216                 operationItem.Name = ServiceOperationHelpers.GetOperationName(this.serviceProvider, methodInfo);
 217                 operationItem.Operation.ContractType = serviceContractType;
 218                 operationItem.Operation.Name = ServiceOperationHelpers.GetOperationName(this.serviceProvider, methodInfo);
 219                 this.AddServiceOperation(operationItem);
 220             }
 221         }
 222
 223         void ImportContractButtonClicked(object sender, EventArgs e)
 224         {
 225             using (TypeBrowserDialog typeBrowserDialog = new TypeBrowserDialog(serviceProvider as IServiceProvider, new ServiceContractsTypeFilterProvider(), "System.String"))
 226             {
 227                 typeBrowserDialog.ShowDialog();
 228                 if (typeBrowserDialog.SelectedType != null)
 229                 {
 230                     ServiceContractListItem contractItem = new ServiceContractListItem(this.operationsListBox);
 231                     contractItem.Validating += new CancelEventHandler(ServiceContractValidating);
 232                     contractItem.Name = typeBrowserDialog.SelectedType.FullName;
 233                     contractItem.ContractType = typeBrowserDialog.SelectedType;
 234                     contractItem.IsCustomContract = false;
 235                     CancelEventArgs cancelEventArgs = new CancelEventArgs();
 236                     contractItem.Validating.Invoke(contractItem, cancelEventArgs);
 237                     if (cancelEventArgs.Cancel)
 238                     {
 239                         return;
 240                     }
 241                     AddServiceContract(contractItem);
 242
 243                     ImportContract(typeBrowserDialog.SelectedType);
 244                 }
 245             }
 246         }
 247
 248         void NewContractButtonClicked(object sender, EventArgs e)
 249         {
 250             ServiceContractListItem contractItem = this.serviceContracts.CreateWithUniqueName();
 251             contractItem.Validating += new CancelEventHandler(ServiceContractValidating);
 252             contractItem.IsCustomContract = true;
 253             this.AddServiceContract(contractItem);
 254             WorkflowServiceOperationListItem newWorkflowServiceOperationListItem = contractItem.CreateOperation();
 255             newWorkflowServiceOperationListItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 256             this.AddServiceOperation(newWorkflowServiceOperationListItem);
 257             contractItem.SelectionOperation(newWorkflowServiceOperationListItem);
 258         }
 259
 260         private void okButton_Click(object sender, EventArgs e)
 261         {
 262             object selectedObject = operationsListBox.SelectedItem;
 263             if (selectedObject == null)
 264             {
 265                 selectedOperation = null;
 266             }
 267             if (selectedObject is TypedServiceOperationListItem)
 268             {
 269                 selectedOperation = ((TypedServiceOperationListItem) selectedObject).Operation;
 270             }
 271             else if (selectedObject is WorkflowServiceOperationListItem)
 272             {
 273                 selectedOperation = ((WorkflowServiceOperationListItem) selectedObject).Operation;
 274             }
 275             else
 276             {
 277                 // dont close the dialog when contracts are selected
 278                 return;
 279             }
 280             this.DialogResult = DialogResult.OK;
 281             this.Close();
 282         }
 283
 284         private void OperationPickerDialogLoad(object sender, EventArgs e)
 285         {
 286             if (this.serviceContracts.Count == 0)
 287             {
 288                 AddHelpListItem();
 289             }
 290             foreach (ServiceContractListItem serviceContractListItem in this.serviceContracts)
 291             {
 292                 if (!serviceContractListItem.IsCustomContract)
 293                 {
 294                     ImportContract(serviceContractListItem.ContractType);
 295                 }
 296             }
 297             this.importContractButton.Click += new EventHandler(ImportContractButtonClicked);
 298             this.operationsListBox.DoubleClick += new EventHandler(operationsListBox_DoubleClick);
 299             this.operationsListBox.SelectedIndexChanged += new EventHandler(operationsListBox_SelectedIndexChanged);
 300             this.addOperationButton.Click += new EventHandler(addOperationButton_Click);
 301             this.toolStripButton1.Click += new EventHandler(NewContractButtonClicked);
 302             this.okButton.Click += new EventHandler(okButton_Click);
 303
 304
 305             // This is to make the selected operation the selected item in the operationsListBox.
 306             // This needs to be done to work around the Microsoft bug causing selection events to not fire till form is loaded.
 307             if (this.selectedOperation != null)
 308             {
 309                 SelectServiceOperation(this.selectedOperation);
 310             }
 311             else // select the first operation if no selectedoperation is set
 312             {
 313                 if (operationsListBox.Items.Count > 0)
 314                 {
 315                     operationsListBox.SetSelected(0, true);
 316                 }
 317             }
 318         }
 319
 320
 321         void operationsListBox_DoubleClick(object sender, EventArgs e)
 322         {
 323             okButton_Click(sender, e);
 324         }
 325
 326         private void operationsListBox_SelectedIndexChanged(object sender, EventArgs e)
 327         {
 328             if (operationsListBox.SelectedItemViewControl != null)
 329             {
 330                 this.addOperationButton.Visible = false;
 331                 detailsViewPanel.Visible = false;
 332                 // Give the old details control a chance to valiadte its fields before tearing it down.
 333                 foreach (Control control in detailsViewPanel.Controls)
 334                 {
 335                     UserControl userControl = control as UserControl;
 336                     if (userControl != null)
 337                     {
 338                         userControl.ValidateChildren();
 339                     }
 340                 }
 341                 detailsViewPanel.Controls.Clear();
 342                 operationsListBox.SelectedItemViewControl.Dock = DockStyle.Fill;
 343                 detailsViewPanel.Controls.Add(operationsListBox.SelectedItemViewControl);
 344                 detailsViewPanel.Visible = true;
 345                 if (operationsListBox.SelectedItem is ServiceOperationListItem)
 346                 {
 347                     this.okButton.Enabled = true;
 348                 }
 349                 else
 350                 {
 351                     this.okButton.Enabled = false;
 352                     ServiceContractListItem serviceContractListItem = this.operationsListBox.SelectedItem as ServiceContractListItem;
 353                     if ((serviceContractListItem != null) && (serviceContractListItem.IsCustomContract))
 354                     {
 355                         this.addOperationButton.Visible = true;
 356                     }
 357                 }
 358             }
 359
 360         }
 361
 362         private void RemoveHelpListItem()
 363         {
 364             if (this.operationsListBox.Items.Count > 0 && this.operationsListBox.Items[0] is HelpListItem)
 365             {
 366                 this.operationsListBox.Items.Clear();
 367             }
 368         }
 369
 370         private void SelectServiceOperation(OperationInfoBase operationInfo)
 371         {
 372             Fx.Assert(operationInfo != null, "operationInfo cannot be null");
 373             ServiceContractListItem serviceContract = this.serviceContracts.Find(operationInfo.GetContractFullName(null));
 374             // Dont select operation if the contract cannot be found in the serviceContracts list
 375             if (serviceContract == null)
 376             {
 377                 return;
 378             }
 379             ServiceOperationListItem operationItem = null;
 380             if (operationInfo is OperationInfo)
 381             {
 382                 operationItem = new WorkflowServiceOperationListItem();
 383                 operationItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 384
 385                 operationItem.Name = operationInfo.Name;
 386                 ((WorkflowServiceOperationListItem) operationItem).Operation = operationInfo as OperationInfo;
 387
 388             }
 389             else if (operationInfo is TypedOperationInfo)
 390             {
 391                 operationItem = new TypedServiceOperationListItem();
 392                 operationItem.Validating += new CancelEventHandler(ServiceOperationValidating);
 393                 operationItem.Name = operationInfo.Name;
 394                 ((TypedServiceOperationListItem) operationItem).Operation = operationInfo as TypedOperationInfo;
 395             }
 396
 397             serviceContract.SelectionOperation(operationItem);
 398         }
 399
 400         void ServiceContractValidating(object sender, CancelEventArgs e)
 401         {
 402             ServiceContractListItem serviceContractListItem = (ServiceContractListItem) sender;
 403
 404             if (string.IsNullOrEmpty(serviceContractListItem.Name))
 405             {
 406                 e.Cancel = true;
 407                 string errorString = SR2.GetString(SR2.ContractNameCannotBeEmpty);
 408                 DesignerHelpers.ShowMessage(this.serviceProvider, errorString, System.Workflow.ComponentModel.Design.DR.GetString(System.Workflow.ComponentModel.Design.DR.WorkflowDesignerTitle), MessageBoxButtons.OK,
 409                     MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
 410
 411             }
 412             bool duplicatesFound = false;
 413             foreach (ServiceContractListItem foundContract in serviceContracts)
 414             {
 415                 if (foundContract == serviceContractListItem)
 416                 {
 417                     continue;
 418                 }
 419
 420                 // allow reimport of existing imported contracts
 421                 if (!serviceContractListItem.IsCustomContract && serviceContractListItem.ContractType.Equals(foundContract.ContractType))
 422                 {
 423                     continue;
 424                 }
 425
 426                 if (foundContract.Name.Equals(serviceContractListItem.Name))
 427                 {
 428                     duplicatesFound = true;
 429                     break;
 430                 }
 431
 432             }
 433             // contract names must be unique
 434             if (duplicatesFound)
 435             {
 436
 437                 e.Cancel = true;
 438                 string errorString = SR2.GetString(SR2.ContractNameMustBeUnique);
 439                 DesignerHelpers.ShowMessage(this.serviceProvider, errorString, System.Workflow.ComponentModel.Design.DR.GetString(System.Workflow.ComponentModel.Design.DR.WorkflowDesignerTitle), MessageBoxButtons.OK,
 440                     MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
 441
 442             }
 443         }
 444
 445
 446
 447
 448         void ServiceOperationValidating(object sender, CancelEventArgs e)
 449         {
 450
 451             ServiceOperationListItem serviceOperationListItem = (ServiceOperationListItem) sender;
 452             string newOperationName = serviceOperationListItem.Name;
 453             string contractName = serviceOperationListItem.ContractName;
 454             if (string.IsNullOrEmpty(newOperationName))
 455             {
 456                 e.Cancel = true;
 457                 string errorString = SR2.GetString(SR2.OperationNameCannotBeEmpty);
 458                 DesignerHelpers.ShowMessage(this.serviceProvider, errorString, System.Workflow.ComponentModel.Design.DR.GetString(System.Workflow.ComponentModel.Design.DR.WorkflowDesignerTitle), MessageBoxButtons.OK,
 459                     MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
 460             }
 461
 462             Fx.Assert(!string.IsNullOrEmpty(contractName), "contract name should be valid to run this check");
 463             ServiceContractListItem contractListItem = serviceContracts.Find(contractName);
 464             Fx.Assert(contractListItem != null, "contract should be present in the list to run this check");
 465
 466             // operation names must be unique inside a contract
 467             bool duplicatesFound = false;
 468             foreach (ServiceOperationListItem foundOperation in contractListItem.Operations)
 469             {
 470                 if (foundOperation == serviceOperationListItem)
 471                 {
 472                     continue;
 473                 }
 474                 if (foundOperation.Name.Equals(newOperationName))
 475                 {
 476                     duplicatesFound = true;
 477                     break;
 478                 }
 479
 480             }
 481             if (duplicatesFound)
 482             {
 483
 484                 e.Cancel = true;
 485                 string errorString = SR2.GetString(SR2.OperationNameMustBeUnique);
 486                 DesignerHelpers.ShowMessage(this.serviceProvider, errorString, System.Workflow.ComponentModel.Design.DR.GetString(System.Workflow.ComponentModel.Design.DR.WorkflowDesignerTitle), MessageBoxButtons.OK,
 487                     MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
 488
 489             }
 490
 491         }
 492
 493         [ListItemView(typeof(HelpListItemViewControl))]
 494         [ListItemDetailView(typeof(ListItemViewControl))]
 495         private class HelpListItem
 496         {
 497         }
 498
 499         private class HelpListItemViewControl : ListItemViewControl
 500         {
 501
 502             protected override void OnLoad(EventArgs e)
 503             {
 504                 this.Width = this.Parent.Width - 10;
 505                 Label label = new Label();
 506                 label.ForeColor = System.Drawing.SystemColors.GrayText;
 507                 label.Dock = DockStyle.Fill;
 508                 this.Font = new Font(this.Font, FontStyle.Italic);
 509                 label.Text = SR2.GetString(SR2.AddOperationsUsingImportAddButtons);
 510                 this.Controls.Add(label);
 511             }
 512         }
 513
 514         private class ServiceContractsTypeFilterProvider : ITypeFilterProvider
 515         {
 516
 517             string ITypeFilterProvider.FilterDescription
 518             {
 519                 get { return SR2.GetString(SR2.ChooseAServiceContractFromBelow); }
 520             }
 521             bool ITypeFilterProvider.CanFilterType(Type type, bool throwOnError)
 522             {
 523                 if (!type.IsInterface)
 524                 {
 525                     return false;
 526                 }
 527                 if (type.IsDefined(typeof(ServiceContractAttribute), true))
 528                 {
 529                     return true;
 530                 }
 531                 else
 532                 {
 533                     return false;
 534                 }
 535             }
 536         }
 537
 538
 539     }
 540 }