public static IUiControl Render(
string consoleId,
string elementProviderName,
FlowToken flowToken,
FormFlowUiDefinition formFlowUiCommand,
IFormChannelIdentifier channel,
bool debugMode,
FlowControllerServicesContainer servicesContainer)
{
FlowControllerServicesContainer formServicesContainer = new FlowControllerServicesContainer(servicesContainer);
formServicesContainer.AddService(new FormFlowRenderingService());
formServicesContainer.AddService(new FormFlowWebRenderingService());
IFormMarkupProvider formMarkupProvider = formFlowUiCommand.MarkupProvider;
IFormMarkupProvider customToolbarItemsMarkupProvider = formFlowUiCommand.CustomToolbarItemsMarkupProvider;
Dictionary<string, object> innerFormBindings = formFlowUiCommand.BindingsProvider.GetBindings();
Dictionary<IFormEventIdentifier, FormFlowEventHandler> eventHandlers = formFlowUiCommand.EventHandlers;
Dictionary<string, List<ClientValidationRule>> bindingsValidationRules = formFlowUiCommand.BindingsValidationRules;
FormTreeCompiler formCompiler = new FormTreeCompiler();
IUiContainer renderingContainer = GetRenderingContainer(channel, formFlowUiCommand.UiContainerType);
// Setting state related objects so the delegate below can access them "fresh"
CurrentFormTreeCompiler = formCompiler;
CurrentInnerFormBindings = innerFormBindings;
CurrentControlContainer = (IWebUiContainer)renderingContainer;
Dictionary<string, object> containerEventHandlerStubs = new Dictionary<string, object>();
foreach (IFormEventIdentifier eventIdentifier in eventHandlers.Keys)
{
IFormEventIdentifier localScopeEventIdentifier = eventIdentifier; // See: Local variable usage with anonymous methods within loop control structures
EventHandler handlerStub = delegate(object sender, EventArgs e)
{
try
{
BaseEventHandler(consoleId, elementProviderName, flowToken, formFlowUiCommand, servicesContainer, eventHandlers, localScopeEventIdentifier, formServicesContainer);
}
catch (Exception ex)
{
formServicesContainer.GetService<IManagementConsoleMessageService>().ShowLogEntry(typeof(FormFlowUiDefinitionRenderer), ex);
throw;
}
};
containerEventHandlerStubs.Add(eventIdentifier.BindingName, handlerStub);
if (innerFormBindings.ContainsKey(eventIdentifier.BindingName))
{
innerFormBindings.Remove(eventIdentifier.BindingName);
}
innerFormBindings.Add(eventIdentifier.BindingName, handlerStub);
}
XDocument document;
using (XmlReader formMarkupReader = formMarkupProvider.GetReader())
{
document = XDocument.Load(formMarkupReader);
formMarkupReader.Close();
}
formCompiler.Compile(document, channel, innerFormBindings, debugMode, "", bindingsValidationRules);
IUiControl innerForm = formCompiler.UiControl;
IUiControl customToolbarItems = null;
if (customToolbarItemsMarkupProvider != null)
{
FormTreeCompiler toolbarCompiler = new FormTreeCompiler();
using (XmlReader formMarkupReader = customToolbarItemsMarkupProvider.GetReader())
{
toolbarCompiler.Compile(formMarkupReader, channel, innerFormBindings, debugMode, bindingsValidationRules);
}
customToolbarItems = toolbarCompiler.UiControl;
}
CurrentControlTreeRoot = (IWebUiControl)innerForm;
string label = formCompiler.Label;
if(label.IsNullOrEmpty())
{
label = formFlowUiCommand.ContainerLabel ?? "";
}
string labelField = GetFormLabelField(document);
ResourceHandle containerIcon = formCompiler.Icon;
return renderingContainer.Render(formCompiler.UiControl, customToolbarItems, channel, containerEventHandlerStubs, label, labelField, containerIcon);
}
public IFlowUiDefinition GetCurrentUiDefinition(FlowToken flowToken)
{
WorkflowFlowToken workflowFlowToken = (WorkflowFlowToken)flowToken;
if (!WorkflowFacade.WorkflowExists(workflowFlowToken.WorkflowInstanceId))
{
Log.LogVerbose(LogTitle, "The workflow with Id = {0} does not exists", workflowFlowToken.WorkflowInstanceId);
return null;
}
using (GlobalInitializerFacade.CoreNotLockedScope)
{
Semaphore semaphore = WorkflowFacade.WaitForIdleStatus(workflowFlowToken.WorkflowInstanceId);
if (semaphore != null)
{
Log.LogVerbose(LogTitle, "The workflow with Id = {0} is running, waiting until its done.", workflowFlowToken.WorkflowInstanceId);
semaphore.WaitOne(TimeSpan.FromSeconds(10), true);
Log.LogVerbose(LogTitle, "Done waiting on the workflow with Id = {0}.", workflowFlowToken.WorkflowInstanceId);
}
}
FormData formFunction = WorkflowFacade.GetFormData(workflowFlowToken.WorkflowInstanceId);
if (formFunction == null)
{
return null;
}
FormFlowUiDefinition formFlowUiDefinition;
if (formFunction.FormDefinition != null)
{
formFlowUiDefinition = new FormFlowUiDefinition(
new XmlTextReader(new StringReader(formFunction.FormDefinition)),
formFunction.ContainerType,
formFunction.ContainerLabel,
formFunction.Bindings,
formFunction.BindingsValidationRules
);
}
else if (formFunction.FormMarkupProvider != null)
{
formFlowUiDefinition = new FormFlowUiDefinition(
formFunction.FormMarkupProvider,
formFunction.ContainerType,
formFunction.ContainerLabel,
formFunction.Bindings,
formFunction.BindingsValidationRules
);
}
else
{
throw new NotImplementedException();
}
if (!string.IsNullOrEmpty(formFunction.CustomToolbarDefinition))
{
formFlowUiDefinition.SetCustomToolbarMarkupProvider(new XmlTextReader(new StringReader(formFunction.CustomToolbarDefinition)));
}
else if (formFunction.CustomToolbarMarkupProvider != null)
{
formFlowUiDefinition.SetCustomToolbarMarkupProvider(formFunction.CustomToolbarMarkupProvider);
}
AddEventHandles(formFlowUiDefinition, workflowFlowToken.WorkflowInstanceId);
return formFlowUiDefinition;
}
private static void BaseEventHandler(string consoleId,
string elementProviderName,
FlowToken flowToken,
FormFlowUiDefinition formFlowUiCommand,
FlowControllerServicesContainer servicesContainer,
Dictionary<IFormEventIdentifier, FormFlowEventHandler> eventHandlers,
IFormEventIdentifier localScopeEventIdentifier,
FlowControllerServicesContainer formServicesContainer)
{
FormTreeCompiler activeFormTreeCompiler = CurrentFormTreeCompiler;
Dictionary<string, object> activeInnerFormBindings = CurrentInnerFormBindings;
FormFlowEventHandler handler = eventHandlers[localScopeEventIdentifier];
Dictionary<string, Exception> bindingErrors = activeFormTreeCompiler.SaveAndValidateControlProperties();
formServicesContainer.AddService(new BindingValidationService(bindingErrors));
handler.Invoke(flowToken, activeInnerFormBindings, formServicesContainer);
if (formServicesContainer.GetService<IManagementConsoleMessageService>().CloseCurrentViewRequested)
{
ViewTransitionHelper.HandleCloseCurrentView(formFlowUiCommand.UiContainerType);
return;
}
var formFlowService = (FormFlowRenderingService) formServicesContainer.GetService<IFormFlowRenderingService>();
bool replacePageOutput = (formServicesContainer.GetService<IFormFlowWebRenderingService>().NewPageOutput != null);
bool rerenderView = formFlowService.RerenderViewRequested;
if (formFlowService.BindingPathedMessages != null)
{
ShowFieldMessages(CurrentControlTreeRoot, formFlowService.BindingPathedMessages, CurrentControlContainer,
servicesContainer);
}
List<bool> boolCounterList = new List<bool> {replacePageOutput, rerenderView};
if (boolCounterList.Count(f => f) > 1)
{
StringBuilder sb = new StringBuilder("Flow returned conflicting directives for post handling:\n");
if (replacePageOutput) sb.AppendLine(" - Replace page output with new web control.");
if (rerenderView) sb.AppendLine(" - Rerender view.");
throw new InvalidOperationException(sb.ToString());
}
if (rerenderView)
{
Log.LogVerbose("FormFlowRendering", "Re-render requested");
IFlowUiDefinition newFlowUiDefinition = FlowControllerFacade.GetCurrentUiDefinition(flowToken,
servicesContainer);
if (!(newFlowUiDefinition is FlowUiDefinitionBase))
throw new NotImplementedException("Unable to handle transitions to ui definition of type " +
newFlowUiDefinition.GetType());
ViewTransitionHelper.HandleRerender(consoleId, elementProviderName, flowToken, formFlowUiCommand,
(FlowUiDefinitionBase) newFlowUiDefinition, servicesContainer);
}
if (replacePageOutput)
{
Log.LogVerbose("FormFlowRendering", "Replace pageoutput requested");
IFormFlowWebRenderingService webRenderingService =
formServicesContainer.GetService<IFormFlowWebRenderingService>();
Control newPageOutput = webRenderingService.NewPageOutput;
foreach (Control control in GetNestedControls(newPageOutput).Where(f => f is ScriptManager).ToList())
{
control.Parent.Controls.Remove(control);
}
Page currentPage = HttpContext.Current.Handler as Page;
HtmlHead newHeadControl = GetNestedControls(newPageOutput).FirstOrDefault(f => f is HtmlHead) as HtmlHead;
HtmlHead oldHeadControl = currentPage.Header;
ControlCollection headContainer = null;
bool headersHasToBeSwitched = newHeadControl != null && oldHeadControl != null;
if (headersHasToBeSwitched)
{
headContainer = newHeadControl.Parent.Controls;
headContainer.Remove(newHeadControl);
}
currentPage.Controls.Clear();
if (string.IsNullOrEmpty(webRenderingService.NewPageMimeType))
{
currentPage.Response.ContentType = "text/html";
}
else
{
currentPage.Response.ContentType = webRenderingService.NewPageMimeType;
}
currentPage.Controls.Add(newPageOutput);
if (headersHasToBeSwitched)
{
oldHeadControl.Controls.Clear();
oldHeadControl.InnerHtml = "";
oldHeadControl.InnerText = "";
if (newHeadControl.ID != null)
{
oldHeadControl.ID = newHeadControl.ID;
}
oldHeadControl.Title = newHeadControl.Title;
headContainer.AddAt(0, oldHeadControl);
foreach (Control c in newHeadControl.Controls.Cast<Control>().ToList())
{
oldHeadControl.Controls.Add(c);
}
}
}
}
private static void AddEventHandles(FormFlowUiDefinition formFlowUiDefinition, Guid instanceId)
{
IEnumerable<string> eventNames = WorkflowFacade.GetCurrentFormEvents(instanceId);
FormData formData = WorkflowFacade.GetFormData(instanceId);
foreach (string eventName in eventNames)
{
if (formData != null && formData.ExcludedEvents != null && formData.ExcludedEvents.Contains(eventName)) continue;
switch (eventName)
{
case "Save":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Save, OnSave);
break;
case "SaveAndPublish":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.SaveAndPublish, OnSaveAndPublish);
break;
case "Next":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Next, OnNext);
break;
case "Previous":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Previous, OnPrevious);
break;
case "Finish":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Finish, OnFinish);
break;
case "Cancel":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Cancel, OnCancel);
break;
case "Preview":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.Preview, OnPreview);
break;
case "CustomEvent01":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.CustomEvent01, OnCustomEvent01);
break;
case "CustomEvent02":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.CustomEvent02, OnCustomEvent02);
break;
case "CustomEvent03":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.CustomEvent03, OnCustomEvent03);
break;
case "CustomEvent04":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.CustomEvent04, OnCustomEvent04);
break;
case "CustomEvent05":
formFlowUiDefinition.EventHandlers.Add(StandardEventIdentifiers.CustomEvent05, OnCustomEvent05);
break;
}
}
IEventHandleFilter eventHandlerFilter = WorkflowFacade.GetEventHandleFilter(instanceId);
if (eventHandlerFilter != null)
{
eventHandlerFilter.Filter(formFlowUiDefinition.EventHandlers);
}
}