public void ProcessPageLoad(TryGetViewInfo TryGetViewInfo,
TryGetAttemptInfo TryGetAttemptInfo,
TryGetActivityInfo TryGetActivityInfo,
RegisterError registerError,
GetErrorInfo getErrorInfo,
GetFramesetMsg getFramesetMessage)
{
RegisterError = registerError;
GetErrorInfo = getErrorInfo;
GetFramesetMsg = getFramesetMessage;
// This page simply causes the frameset to request to move to a different activity. It does not verify that
// the user is authorized to do this. If the user is not authorized, the subsequent request will fail.
if (!TryGetViewInfo(true, out m_view))
{
return;
}
if (!TryGetAttemptInfo(true, out m_attemptId))
{
return;
}
if (!TryGetActivityInfo(true, out m_activityId))
{
return;
}
}
public void ProcessPageLoad(TryGetViewInfo TryGetViewInfo,
TryGetAttemptInfo TryGetAttemptInfo,
TryGetActivityInfo TryGetActivityInfo,
RegisterError registerError,
GetErrorInfo getErrorInfo,
GetFramesetMsg getFramesetMessage)
{
RegisterError = registerError;
GetErrorInfo = getErrorInfo;
GetFramesetMsg = getFramesetMessage;
// This page simply causes the frameset to request to move to a different activity. It does not verify that
// the user is authorized to do this. If the user is not authorized, the subsequent request will fail.
if (!TryGetViewInfo(true, out m_view))
{
return;
}
if (!TryGetAttemptInfo(true, out m_attemptId))
{
return;
}
if (!TryGetActivityInfo(true, out m_activityId))
{
return;
}
}
// it's not worth changing this now
public void ProcessPageLoad(
PackageStore packageStore,
bool firstRendering,
// frameset is being initialized
bool isPostBack,
// page was posted
TryGetViewInfo tryGetViewInfo,
TryGetAttemptInfo tryGetAttemptInfo,
TryGetActivityInfo tryGetActivityInfo,
GetResourcePath getResourcePath,
AppendContentFrameDetails appendContentFrameDetails,
UpdateRenderContext updateRenderContext,
ProcessPostedData processPostedData,
ProcessViewRequest processViewRequest,
ProcessPostedDataComplete processPostedDataComplete,
RegisterError registerError,
GetErrorInfo getErrorInfo,
GetFramesetMsg getFramesetMsg)
{
this.RegisterError = registerError;
this.UpdateRenderContext = updateRenderContext;
this.GetErrorInfo = getErrorInfo;
this.AppendContentFrameDetails = appendContentFrameDetails;
this.GetFramesetMsg = getFramesetMsg;
this.mIsPostedPage = isPostBack;
// If this is the first time the page is being rendered, just show 'please wait' and return.
if (firstRendering)
{
// Initial page rendering, show "please wait"
WritePleaseWaitToResponse(this.Response);
this.Response.End();
return;
}
SessionView view;
// Get View information. It determines what else to look for.
if (!tryGetViewInfo(true, out view))
{
return;
}
// There is something to display, so process the request...
AttemptItemIdentifier attemptId;
if (!tryGetAttemptInfo(true, out attemptId))
{
return;
}
StoredLearningSession slsSession = new StoredLearningSession(view, attemptId, packageStore);
if (!processViewRequest(view, slsSession))
{
return;
}
this.Session = slsSession;
if (slsSession.View == SessionView.Execute)
{
// Check if the session can be executed...
if (slsSession.AttemptStatus != AttemptStatus.Active)
{
this.RegisterError(
this.GetFramesetMsg(FramesetStringId.CannotDisplayContentTitle),
this.GetFramesetMsg(FramesetStringId.SessionIsNotActiveMsg),
false);
return;
}
if (!slsSession.CurrentActivityIsActive)
{
this.RegisterError(
this.GetFramesetMsg(FramesetStringId.SelectActivityTitleHtml),
this.GetFramesetMsg(FramesetStringId.SelectActivityMessageHtml),
true);
return;
}
}
else if (slsSession.View == SessionView.Review)
{
// Get information about which activity to review, then make that the current activity.
long activityId = -1; // make compiler happy
if (!tryGetActivityInfo(true, out activityId))
{
return;
}
// Move to the requested activity. Under normal conditions, this should always succeed, since the frameset should be
// giving this page a valid activity id.
MoveToActivity(slsSession, activityId);
}
else if (slsSession.View == SessionView.RandomAccess)
{
// Get information about which activity to edit, then make that the current activity.
long activityId = -1; // make compiler happy
if (!tryGetActivityInfo(true, out activityId))
{
return;
}
// Move to the requested activity. Under normal conditions, this should always succeed, since the frameset should be
// giving this page a valid activity id.
MoveToActivity(slsSession, activityId);
}
if (isPostBack /* && !SessionEnded */)
{
// Process information from posted content
if (!this.SessionIsReadOnly)
{
HttpFileCollection files = this.Request.Files;
int numFiles = files.Count;
Dictionary<string, HttpPostedFile> newFileCollection =
new Dictionary<string, HttpPostedFile>(numFiles);
// Allow the application to process the form data
if (!processPostedData(slsSession, this.Request, newFileCollection))
{
return;
}
// Allow MLC to process the form data
this.Session.ProcessFormData(this.Request.Form, newFileCollection);
// Allow application to do final processing after all posted data is processed.
processPostedDataComplete(this.Session);
// If there was an error in processing form data, end the processing. This allows, for instance, to
// save the data, display an error and not have commands (such as 'move to next activity') executed.
if (this.HasError)
{
this.Session.CommitChanges();
return;
}
}
// Issue with Review view: where to get activity id? From URL or posted data?
// Find out what the commands are and do them.
ICollection<CommandInfo> commands = this.GetCommands();
foreach (CommandInfo cmdInfo in commands)
{
switch (cmdInfo.Command)
{
case Commands.DoNext:
{
// When leaving a current activity, we must allow navigation requests the SCO has made to be
// executed. If that results in changing the current activity, then do not also ask for another
// move.
if (!ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToNextValid())
{
MoveToNextActivity(this.Session);
this.ActivityHasChanged = true;
}
}
else
{
this.ActivityHasChanged = true;
}
if (!this.ActivityHasChanged)
{
// Moving to the next activity is not valid.
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToNextFailedHtml),
this.ThemeFolderPath),
true);
}
}
break;
case Commands.DoPrevious:
{
if (!ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToPreviousValid())
{
MoveToPreviousActivity(this.Session);
this.ActivityHasChanged = true;
}
}
else
{
this.ActivityHasChanged = true;
}
if (!this.ActivityHasChanged)
{
// Moving to the previous activity is not valid.
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToPreviousFailedHtml),
this.ThemeFolderPath),
true);
}
}
break;
case Commands.DoChoice:
case Commands.DoTocChoice:
{
// These commands are used to navigate to activities, and to navigate to the final 'submit' page.
// In SCORM content, these commands do different things. In LRM content (which is what we are
// in, since this is the posted page), they have identical effects.
// First check whether this is a request for the submit page or an activity.
string cmdData = cmdInfo.CommandData;
if (string.CompareOrdinal(cmdData, SubmitId) == 0)
{
// Requesting submit page. Do not change the current activity, but mark it as changed so that
// it appears to the user that it has changed.
this.ActivityHasChanged = true;
string title = this.GetFramesetMsg(FramesetStringId.SubmitPageTitleHtml);
string message;
string saveBtn = this.GetFramesetMsg(FramesetStringId.SubmitPageSaveButtonHtml);
if (this.Session.HasCurrentActivity)
{
message = this.GetFramesetMsg(FramesetStringId.SubmitPageMessageHtml);
}
else
{
message =
this.GetFramesetMsg(FramesetStringId.SubmitPageMessageNoCurrentActivityHtml);
}
this.WriteSubmitPage(title, message, saveBtn);
}
else
{
long activityId;
if (long.TryParse(cmdData, out activityId))
{
// If the requested activity is the current activity, then do not do the navigation.
// We skip it because moving to the activity basically exits the current attempt and creates
// a new one. That new one also increments the attempt count. If we don't do the move, we
// pretend it was done. This will force the content frame to be reloaded with the current
// activity.
if (this.IsCurrentActiveActivity(activityId))
{
this.ActivityHasChanged = true;
}
else
{
if (!ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToActivityValid(activityId))
{
MoveToActivity(this.Session, activityId);
this.ActivityHasChanged = true;
}
}
else
{
this.ActivityHasChanged = true;
}
}
}
}
if (!this.ActivityHasChanged)
{
// Moving to the selected activity is not valid.
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToActivityFailedHtml),
this.ThemeFolderPath),
true);
}
}
break;
case Commands.DoSave:
{
// Do nothing. The information will be saved since the page was posted.
}
break;
case Commands.DoSubmit:
{
if (this.Session.View == SessionView.Execute)
{
ProcessNavigationRequests(this.Session);
this.Session.Exit();
}
this.ActivityHasChanged = true;
}
break;
}
}
}
// If an error has been registered (and it's not the submit
// page rendering), don't attempt to render the content.
if (this.HasError && !this.SubmitPageDisplayed)
{
if (!this.SessionIsReadOnly)
{
this.Session.CommitChanges();
}
return;
}
// There was no error, so go ahead and render the content from the package.
// If the current activity has changed in the processing of this page, then render the current activity's resource.
// Otherwise, ask the application which resource to read.
if (this.ActivityHasChanged)
{
// If the activity has changed, we render the content page without rendering the content. The page will then
// reload the content frame with the new activity.
if (!this.SessionIsReadOnly)
{
this.Session.CommitChanges();
}
}
else
{
// Render the requested file in the current activity.
this.RenderPackageContent(getResourcePath());
// If there was no error, end the response. Otherwise, we wait and render the error on the page.
if (!this.HasError)
{
this.Response.End();
}
}
}
// it's not worth changing this now
public void ProcessPageLoad(
PackageStore packageStore,
GetSessionTitle getSessionTitle,
TryGetViewInfo tryGetViewInfo,
TryGetAttemptInfo tryGetAttemptInfo,
AppendContentFrameDetails appendContentFrameDetails,
RegisterError registerError,
GetErrorInfo getErrorInfo,
ProcessSessionEnd processSessionEnd,
ProcessViewRequest processViewRequest,
GetFramesetMsg getFramesetMsg,
// messages that appear that are unique to different framesets
bool isPostBack)
{
try
{
this.RegisterError = registerError;
this.GetErrorInfo = getErrorInfo;
this.AppendContentFrameDetails = appendContentFrameDetails;
this.GetFramesetMsg = getFramesetMsg;
this.mGetSessionTitle = getSessionTitle;
this.mIsPostedPage = isPostBack;
AttemptItemIdentifier attemptId;
SessionView view;
this.LoadContentFrame = true;
this.ActivityHasChanged = false;
if (!tryGetViewInfo(false, out view))
{
this.WriteError(
ResHelper.GetMessage(Localization.GetMessage("FRM_ViewNotSupportedMsg")));
return;
}
switch (view)
{
case SessionView.Execute:
{
if (!tryGetAttemptInfo(false, out attemptId))
{
return;
}
this.Session = new StoredLearningSession(view, attemptId, packageStore);
if (!processViewRequest(view, this.Session))
{
return;
}
// If the session has ended, allow the application to deal with it.
processSessionEnd(this.Session, ref this.mSessionEndedMsgTitle, ref this.mSessionEndedMsg);
}
break;
case SessionView.Review:
{
if (!tryGetAttemptInfo(false, out attemptId))
{
return;
}
this.Session = new StoredLearningSession(view, attemptId, packageStore);
// Do not set logging options in review view.
if (!processViewRequest(view, this.Session))
{
return;
}
}
break;
case SessionView.RandomAccess:
{
// Note: RandomAccess is not supported in BWP, however that would have been caught before
// displaying this frame.
if (!tryGetAttemptInfo(false, out attemptId))
{
return;
}
this.Session = new StoredLearningSession(view, attemptId, packageStore);
// Do not set logging options in random access view.
if (!processViewRequest(view, this.Session))
{
return;
}
// Move to the first activity with a resource.
MoveToNextActivity(this.Session);
}
break;
default:
this.WriteError(
ResHelper.GetMessage(
Localization.GetMessage("FRM_ViewNotSupportedMsg")));
return;
}
// If the page is posted, process posted data. Remember that all posted data should be considered hostile!
// Note that if the session has already ended, then none of the posted data is saved or processed.
if (isPostBack && !this.SessionIsEnded)
{
// Process any datamodel changes before doing any navigation. This does not save any data.
this.ProcessDataModelValues(
this.Request.Form[HiddenFieldNames.DataModel],
this.Request.Form[HiddenFieldNames.ObjectiveIdMap]);
// Assume we do not have to reload the content frame
this.ActivityHasChanged = false;
this.LoadContentFrame = false;
// if the view requires more data, get it
if ((this.Session.View == SessionView.Review) || (this.Session.View == SessionView.RandomAccess))
{
// Get the current activity from the posted data and set the session to that activity
string strActivityId = this.Request.Form[HiddenFieldNames.ActivityId];
long activityId;
if (string.IsNullOrEmpty(strActivityId) || !long.TryParse(strActivityId, out activityId))
{
this.WriteError(
ResHelper.GetMessage(
Localization.GetMessage("HID_InvalidActivityId"), strActivityId));
}
else
{
MoveToActivity(this.Session, activityId);
}
}
// Find out what the commands are and do them.
this.mSaveOnly = true;
ICollection<CommandInfo> commands = this.GetCommands();
foreach (CommandInfo cmdInfo in commands)
{
switch (cmdInfo.Command)
{
case Commands.DoNext:
{
if (!this.Session.HasCurrentActivity || !ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToNextValid())
{
MoveToNextActivity(this.Session);
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
continue;
}
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
if (!this.ActivityHasChanged)
{
// Moving to the next activity is not valid. It's possible that when the current
// activity was unloaded, it exited or suspended itself. If that's the case, we
// try to reactivate it. Note this causes the attempt count on the activity to
// increment, so on "poorly" written content, the user may not see their data
// anymore.
this.ActivateCurrentActivity();
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToNextFailedHtml),
this.ThemeFolderPath),
true);
}
this.mSaveOnly = false;
}
break;
case Commands.DoPrevious:
{
if (!this.Session.HasCurrentActivity || !ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToPreviousValid())
{
MoveToPreviousActivity(this.Session);
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
continue;
}
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
if (!this.ActivityHasChanged)
{
// Moving to the previous activity is not valid. It's possible that when the current
// activity was unloaded, it exited or suspended itself. If that's the case, we
// try to reactivate it. Note this causes the attempt count on the activity to
// increment, so on "poorly" written content, the user may not see their data
// anymore.
this.ActivateCurrentActivity();
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToPreviousFailedHtml),
this.ThemeFolderPath),
true);
}
this.mSaveOnly = false;
}
break;
case Commands.DoChoice:
{
// This command is used to navigate to activities, primarily from either within a link in an
// error page, or the submit page returning to the current activity. This command does not
// create a new attempt if the requested activity is already the current activity.
// Requesting to move to a specific activity. The cmdData will include a numeric activity id.
string cmdData = cmdInfo.CommandData;
long activityId;
if (long.TryParse(cmdData, out activityId))
{
// If the requested activity is the current activity, then do not do the navigation.
// We skip it because moving to the activity basically exits the current attempt and creates
// a new one and in this case, that is not the desired behavior.
// That new one also increments the attempt count. If we don't do the move, we
// pretend it was done. This will force the content frame to be reloaded with the current
// activity.
if (this.IsCurrentActiveActivity(activityId))
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else
{
// If there is no current activity, or if any navigation requests did not
// result in a move, then continue with the choice.
if (!this.Session.HasCurrentActivity
|| !ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToActivityValid(activityId))
{
MoveToActivity(this.Session, activityId);
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
}
}
if (!this.ActivityHasChanged)
{
// Moving to the selected activity is not valid. It's possible that when the current
// activity was unloaded, it exited or suspended itself. If that's the case, we
// try to reactivate it. Note this causes the attempt count on the activity to
// increment, so on "poorly" written content, the user may not see their data
// anymore.
this.ActivateCurrentActivity();
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToActivityFailedHtml),
this.ThemeFolderPath),
true);
}
this.mSaveOnly = false;
}
break;
case Commands.DoTocChoice:
{
// This command is used to navigate to activities in response to a user selecting a node
// in the TOC. In this case, even if the current activity is the activity that is requested,
// then a MoveToActivity() is requested. This will cause the attempt count on the activity
// to be incremented and the RTE to be reinitialized. This may be a surprise to the user, but
// is a requirement of the SCORM 2004 conformance tests.
// If the selected page is the submit page (either in Execute or RandomAccess views), then
// display the message and don't ask the session to move to a new activity.
string cmdData = cmdInfo.CommandData;
if (string.CompareOrdinal(cmdData, SubmitId) == 0)
{
// Requesting submit page. Do not change the current activity, but mark it as changed so that
// it appears to the user that it has changed.
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
string title = this.GetFramesetMsg(FramesetStringId.SubmitPageTitleHtml);
string message;
string saveBtn = this.GetFramesetMsg(FramesetStringId.SubmitPageSaveButtonHtml);
if (this.Session.HasCurrentActivity)
{
message = this.GetFramesetMsg(FramesetStringId.SubmitPageMessageHtml);
}
else
{
message =
this.GetFramesetMsg(
FramesetStringId.SubmitPageMessageNoCurrentActivityHtml);
}
this.WriteSubmitPage(title, message, saveBtn);
}
else
{
// Requesting to move to a specific activity. The cmdData will include a numeric activity id.
long activityId;
if (long.TryParse(cmdData, out activityId))
{
// If there is no current activity, or if any navigation requests did not
// result in a move, then continue with the choice.
if (!this.Session.HasCurrentActivity
|| !ProcessNavigationRequests(this.Session))
{
if (this.Session.IsMoveToActivityValid(activityId))
{
MoveToActivity(this.Session, activityId);
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
}
else
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
}
}
if (!this.ActivityHasChanged)
{
// Moving to the selected activity is not valid. It's possible that when the current
// activity was unloaded, it exited or suspended itself. If that's the case, we
// try to reactivate it. Note this causes the attempt count on the activity to
// increment, so on "poorly" written content, the user may not see their data
// anymore.
this.ActivateCurrentActivity();
this.WriteError(
ResHelper.Format(
this.GetFramesetMsg(FramesetStringId.MoveToActivityFailedHtml),
this.ThemeFolderPath),
true);
}
this.mSaveOnly = false;
}
break;
case Commands.DoIsChoiceValid:
{
string activityKey = cmdInfo.CommandData;
bool isValid = false;
if (!string.IsNullOrEmpty(activityKey))
{
isValid = this.Session.IsMoveToActivityValid(activityKey);
}
this.mIsNavValidResponse = new IsNavValidResponseData(
Commands.DoIsChoiceValid, activityKey, isValid);
this.mSaveOnly = false;
}
break;
case Commands.DoIsNavigationValid:
{
string navCommand = cmdInfo.CommandData;
if (!string.IsNullOrEmpty(navCommand))
{
bool isValid = false;
if (navCommand == Commands.DoNext)
{
isValid = this.Session.IsMoveToNextValid();
}
else if (navCommand == Commands.DoPrevious)
{
isValid = this.Session.IsMoveToPreviousValid();
}
this.mIsNavValidResponse =
new IsNavValidResponseData(
Commands.DoIsNavigationValid, navCommand, isValid);
}
this.mSaveOnly = false;
}
break;
case Commands.DoSave:
{
// Do nothing. The information will be saved since the page was posted.
}
break;
case Commands.DoTerminate:
{
// end the current activity
try
{
if (this.Session.View == SessionView.Execute)
{
// Keep track of state before calling ProcessNavigationRequests so that we can
// detect if the call changes it in a way that requires reloading the content frame.
long activityBeforeNavigation = this.Session.CurrentActivityId;
int activityAttemptCount =
this.Session.CurrentActivityDataModel.ActivityAttemptCount;
LearningSession session = this.Session;
if (session.HasCurrentActivity)
{
session.ProcessNavigationRequests();
}
// The activity has changed if...
// ... the session now does not have a current activity (since it did before we did the ProcessNavRequests call, OR
// ... the session's current activity is not activity anymore (since it was before the call), OR
// ... the session's activity id has changed
// ... the session's activity id has not changed, but the attempt count has
if (!session.HasCurrentActivity)
{
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else if ((session.View == SessionView.Execute)
&& (!this.Session.CurrentActivityIsActive))
{
// In Execute view, it started as active or would have thrown an exception.
this.ActivityHasChanged = true;
// do not load content frame, as that causes messages to flash while switching activities
this.LoadContentFrame = false;
}
else if (activityBeforeNavigation != session.CurrentActivityId)
{
// The current activity has changed.
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else if ((activityBeforeNavigation == session.CurrentActivityId)
&&
(activityAttemptCount
!= session.CurrentActivityDataModel.ActivityAttemptCount))
{
// The activity has not changed, but the attempt count has.
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
else
{
// In all other cases, it has not changed
this.ActivityHasChanged = false;
this.LoadContentFrame = false;
}
}
else if ((this.Session.View == SessionView.Review)
|| (this.Session.View == SessionView.RandomAccess))
{
// The activity has changed simply by calling this. This allows the client RTE to reinitialize and behave
// as if navigation has happened.
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
}
}
catch (SequencingException ex)
{
this.WriteError(
ResHelper.GetMessage(
Localization.GetMessage("HID_TerminateFailed"),
HttpUtility.HtmlEncode(ex.Message)));
}
this.mSaveOnly = false;
}
break;
case Commands.DoSubmit:
{
// Submit the attempt -- meaning, do an ExitAll
if (this.Session.View == SessionView.Execute)
{
if (this.Session.HasCurrentActivity)
{
ProcessNavigationRequests(this.Session);
}
this.Session.Exit();
}
else if (this.Session.View == SessionView.RandomAccess)
{
// This may also be a request to end grading (for SLK), in which case
// we just set a flag, get the right strings to display and call it done
this.SessionIsEnded = true;
processSessionEnd(
this.Session, ref this.mSessionEndedMsgTitle, ref this.mSessionEndedMsg);
}
this.ActivityHasChanged = true;
this.LoadContentFrame = true;
this.mSaveOnly = false;
}
break;
}
}
}
else
{
// Is this the first page load, as part of frameset? (Some hidden values are only rendered in this case.)
string param = this.Request.QueryString[FramesetQueryParameter.Init];
if (!string.IsNullOrEmpty(param))
{
this.mIsFramesetInitialization = true;
}
}
// If this was not simply a save operation and there is no current activity, then display a message
// asking the user to select one.
if (!this.mSaveOnly && !this.Session.HasCurrentActivity)
{
this.RegisterError(
this.GetFramesetMsg(FramesetStringId.SelectActivityTitleHtml),
this.GetFramesetMsg(FramesetStringId.SelectActivityMessageHtml),
true);
}
// In Execute view, ProcessSessionEnd may write to the database and change state of data related to the attempt.
// Therefore, session changes must be written in the same transation as the session end changes.
TransactionOptions transactionOptions = new TransactionOptions();
transactionOptions.IsolationLevel = System.Transactions.IsolationLevel.Serializable;
using (LearningStoreTransactionScope scope = new LearningStoreTransactionScope(transactionOptions))
{
if (!this.SessionIsReadOnly)
{
// Save all changes
this.Session.CommitChanges();
}
if (this.Session.View == SessionView.Execute)
{
// The rollup and/or sequencing process may have changed the state of the attempt. If so, there are some cases
// that cannot continue so show an error message. Allow the application to process this, since the messages are
// different.
processSessionEnd(this.Session, ref this.mSessionEndedMsgTitle, ref this.mSessionEndedMsg);
}
// finish the transaction
scope.Complete();
}
this.InitHiddenControlInfo();
this.mPageLoadSuccessful = true;
}
catch (ThreadAbortException)
{
// Do nothing -- thread is leaving.
throw;
}
catch (Exception)
{
this.mPageLoadSuccessful = false;
throw;
}
}
/// <summary>
/// 如果是多包数据，那么分包后放到list中
/// 1、当需要组包时，传入参数，分析、使用switch区分，组装不同的帧
/// 2、类型和子类型的方法分别用于区分和组装数据域外数据
/// 3、针对不同的功能组织不同的数据域，最后合并
/// 4、ref donewrite参数为写文件准备，返回本次组包本地读取的字节数
/// </summary>
/// <param name="destid"></param>
/// <param name="msgtype"></param>
/// <param name="msgsubtype"></param>
/// <returns>错误代码另外给出</returns>
public static PacketRet Packetization(Compare example, object data)
{
byte[] frame = null;
PacketRet tempret = new PacketRet();
//packetization的错误代码定义另外给出
tempret.errorcode = 0;
switch (example.msgType)
{
//读操作单元
case (byte)MSGEncoding.MsgType.ReadUnit:
{
switch (example.msgSubType)
{
//读数据
case (byte)MSGEncoding.ReadUint.ReadData:
{
frame = ReadUnit.ReadData(example.destID, (ushort[])data);
break;
}
//读取配置信息
case (byte)MSGEncoding.ReadUint.Readcfg:
{
frame = ReadUnit.Readcfg(example.destID, (ushort[])data);
break;
}
//查询设备状态
case (byte)MSGEncoding.ReadUint.GetDevStatus:
{
frame = ReadUnit.GetDevStatus(example.destID, (ushort[])data);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
//写操作单元
case (byte)MSGEncoding.MsgType.WriteUnit:
{
//为适应前台，测试其他成功后添加转换
Dictionary <ushort, object> data_temp = WriteUnit.TransDict(((Dictionary <string, object>)data));
switch (example.msgSubType)
{
//控制设备（应该是状态/控制量）
case (byte)MSGEncoding.WriteUint.ControlDev:
{
frame = WriteUnit.ControlDev(example.destID, data_temp);
break;
}
//设置配置信息（配置量）
case (byte)MSGEncoding.WriteUint.Setcfg:
{
frame = WriteUnit.Setcfg(example.destID, data_temp);
break;
}
//写数据（数据量）
case (byte)MSGEncoding.WriteUint.WriteData:
{
frame = WriteUnit.WriteData(example.destID, data_temp);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
//读文件
case (byte)MSGEncoding.MsgType.ReadFile:
{
switch (example.msgSubType)
{
//读取指定配置文件，从x位置开始的n个字节数据
case (byte)MSGEncoding.ReadFile.ReadcfgFile:
{
frame = ReadFile.ReadcfgFile(example.destID, (ReadFile.Parameter)data);
break;
}
//读取指定数据文件，从x位置开始的n个字节数据
case (byte)MSGEncoding.ReadFile.ReadDataFile:
{
frame = ReadFile.ReadDataFile(example.destID, (ReadFile.Parameter)data);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
//写文件到设备
//注意：传入的para中的filehandle已经初始化
case (byte)MSGEncoding.MsgType.WriteFile:
{
switch (example.msgSubType)
{
//上传配置文件到设备，并作为最新配置
case (byte)MSGEncoding.WriteFile.UpcfgToDev:
{
frame = WriteFile.UpcfgToDev(example.destID, (WriteFile.Parameter)data);
break;
}
//上传数据文件到设备
case (byte)MSGEncoding.WriteFile.UpDataToDev:
{
frame = WriteFile.UpDataToDev(example.destID, (WriteFile.Parameter)data);
break;
}
//上传升级文件
case (byte)MSGEncoding.WriteFile.UpGradeFile:
{
frame = WriteFile.UpGradeFile(example.destID, (WriteFile.Parameter)data);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
//通信测试
case (byte)MSGEncoding.MsgType.LoopBack:
{
//LoopBack通讯测试用
frame = LoopBack.LoopTest(example.destID, (ushort)data);
break;
}
//其他（向设备查询Error Code的详细解释）
case (byte)MSGEncoding.MsgType.GetErrorInfo:
{
//向设备查询Error Code的详细解释
frame = GetErrorInfo.ExplainError(example.destID, (ushort)data);
break;
}
//文件信息查询
case (byte)MSGEncoding.MsgType.GetFileInfo:
{
switch (example.msgSubType)
{
//取得配置文件名称(=最新更新时间)及文件大小
case (byte)MSGEncoding.GetFileInfo.GetcfgFile:
{
frame = GetFileInfo.GetcfgFile(example.destID, (GetFileInfo.Parameter)data);
break;
}
//按日期范围查询数据文件名及文件大小
case (byte)MSGEncoding.GetFileInfo.GetFileByRange:
{
frame = GetFileInfo.GetFileByRange(example.destID, (GetFileInfo.Parameter)data);
break;
}
//查询离指定日期最近的x个数据文件名及文件大小
case (byte)MSGEncoding.GetFileInfo.GetXFileByLately:
{
frame = GetFileInfo.GetXFileByLately(example.destID, (GetFileInfo.Parameter)data);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
//读缓冲区
case (byte)MSGEncoding.MsgType.ReadBuffer:
{
switch (example.msgSubType)
{
//读CO2气体的采样缓存
case (byte)MSGEncoding.ReadBuffer.ReadCO2Cache:
{
frame = ReadBuffer.ReadCO2Cache(example.destID, (ReadBuffer.Parameter)data);
break;
}
//读六种气体的采样缓存
case (byte)MSGEncoding.ReadBuffer.ReadGasCache:
{
frame = ReadBuffer.ReadGasCache(example.destID, (ReadBuffer.Parameter)data);
break;
}
//读H2O采样数据缓存
case (byte)MSGEncoding.ReadBuffer.ReadH2OCache:
{
frame = ReadBuffer.ReadH2OCache(example.destID, (ReadBuffer.Parameter)data);
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:错误子代码！");
tempret.errorcode = 1;
}
break;
}
break;
}
default:
{
//MessageBox.Show("preparedata-packetzation:数据帧外层类型存在错误！");
tempret.errorcode = 2;
}
break;
}
try
{
//为统一发送和接受帧的对照，添加的标志，这里稳定后挪进所有帧组装方法中
byte[] changeframe = new byte[frame.Length + 1];
Array.Copy(frame, 0, changeframe, 0, 8);
changeframe[8] = packetindex;
Array.Copy(frame, 8, changeframe, 9, frame.Length - 8);
tempret.packetnum = packetindex;
tempret.packetdata = frame;
//通过自动溢出归零
packetindex++;
}
catch (Exception ep)
{
//组好的原始帧中插入帧编码存在错误！
//MessageBox.Show("preparedata-packetization:"+ep.ToString());
tempret.errorcode = 3;
}
return(tempret);
}
[SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity")] // it's not worth changing this now
public void ProcessPageLoad(PackageStore packageStore,
bool firstRendering, // frameset is being initialized
bool isPostBack, // page was posted
TryGetViewInfo TryGetViewInfo,
TryGetAttemptInfo TryGetAttemptInfo,
TryGetActivityInfo TryGetActivityInfo,
GetResourcePath GetResourcePath,
AppendContentFrameDetails appendContentFrameDetails,
UpdateRenderContext updateRenderContext,
ProcessPostedData ProcessPostedData,
ProcessViewRequest ProcessViewRequest,
ProcessPostedDataComplete ProcessPostedDataComplete,
RegisterError registerError,
GetErrorInfo getErrorInfo,
GetFramesetMsg getFramesetMsg)
{
RegisterError = registerError;
UpdateRenderContext = updateRenderContext;
GetErrorInfo = getErrorInfo;
AppendContentFrameDetails = appendContentFrameDetails;
GetFramesetMsg = getFramesetMsg;
m_isPostedPage = isPostBack;
// If this is the first time the page is being rendered, just show 'please wait' and return.
if (firstRendering)
{
// Initial page rendering, show "please wait"
WritePleaseWaitToResponse(Response);
Response.End();
return;
}
SessionView view;
// Get View information. It determines what else to look for.
if (!TryGetViewInfo(true, out view))
{
return;
}
// There is something to display, so process the request...
AttemptItemIdentifier attemptId;
if (!TryGetAttemptInfo(true, out attemptId))
{
return;
}
StoredLearningSession slsSession = new StoredLearningSession(view, attemptId, packageStore);
if (!ProcessViewRequest(view, slsSession))
{
return;
}
Session = slsSession;
if (slsSession.View == SessionView.Execute)
{
// Check if the session can be executed...
if (slsSession.AttemptStatus != AttemptStatus.Active)
{
RegisterError(GetFramesetMsg(FramesetStringId.CannotDisplayContentTitle),
GetFramesetMsg(FramesetStringId.SessionIsNotActiveMsg), false);
return;
}
if (!slsSession.CurrentActivityIsActive)
{
RegisterError(GetFramesetMsg(FramesetStringId.SelectActivityTitleHtml),
GetFramesetMsg(FramesetStringId.SelectActivityMessageHtml), true);
return;
}
}
else if (slsSession.View == SessionView.Review)
{
// Get information about which activity to review, then make that the current activity.
long activityId = -1; // make compiler happy
if (!TryGetActivityInfo(true, out activityId))
{
return;
}
// Move to the requested activity. Under normal conditions, this should always succeed, since the frameset should be
// giving this page a valid activity id.
MoveToActivity(slsSession, activityId);
}
else if (slsSession.View == SessionView.RandomAccess)
{
// Get information about which activity to edit, then make that the current activity.
long activityId = -1; // make compiler happy
if (!TryGetActivityInfo(true, out activityId))
{
return;
}
// Move to the requested activity. Under normal conditions, this should always succeed, since the frameset should be
// giving this page a valid activity id.
MoveToActivity(slsSession, activityId);
}
if (isPostBack /* && !SessionEnded */)
{
//Process information from posted content
if (!this.SessionIsReadOnly)
{
HttpFileCollection files = Request.Files;
int numFiles = files.Count;
Dictionary <string, HttpPostedFile> newFileCollection = new Dictionary <string, HttpPostedFile>(numFiles);
// Allow the application to process the form data
if (!ProcessPostedData(slsSession, Request, newFileCollection))
{
return;
}
// Allow MLC to process the form data
Session.ProcessFormData(Request.Form, newFileCollection);
// Allow application to do final processing after all posted data is processed.
ProcessPostedDataComplete(Session);
// If there was an error in processing form data, end the processing. This allows, for instance, to
// save the data, display an error and not have commands (such as 'move to next activity') executed.
if (HasError)
{
Session.CommitChanges();
return;
}
}
// Issue with Review view: where to get activity id? From URL or posted data?
// Find out what the commands are and do them.
ICollection <CommandInfo> commands = GetCommands();
foreach (CommandInfo cmdInfo in commands)
{
switch (cmdInfo.Command)
{
case Commands.DoNext:
{
// When leaving a current activity, we must allow navigation requests the SCO has made to be
// executed. If that results in changing the current activity, then do not also ask for another
// move.
if (!ProcessNavigationRequests(Session))
{
if (Session.IsMoveToNextValid())
{
MoveToNextActivity(Session);
ActivityHasChanged = true;
}
}
else
{
ActivityHasChanged = true;
}
if (!ActivityHasChanged)
{
// Moving to the next activity is not valid.
WriteError(ResHelper.Format(GetFramesetMsg(FramesetStringId.MoveToNextFailedHtml), ThemeFolderPath), true);
}
}
break;
case Commands.DoPrevious:
{
if (!ProcessNavigationRequests(Session))
{
if (Session.IsMoveToPreviousValid())
{
MoveToPreviousActivity(Session);
ActivityHasChanged = true;
}
}
else
{
ActivityHasChanged = true;
}
if (!ActivityHasChanged)
{
// Moving to the previous activity is not valid.
WriteError(ResHelper.Format(GetFramesetMsg(FramesetStringId.MoveToPreviousFailedHtml), ThemeFolderPath), true);
}
}
break;
case Commands.DoChoice:
case Commands.DoTocChoice:
{
// These commands are used to navigate to activities, and to navigate to the final 'submit' page.
// In SCORM content, these commands do different things. In LRM content (which is what we are
// in, since this is the posted page), they have identical effects.
// First check whether this is a request for the submit page or an activity.
string cmdData = cmdInfo.CommandData;
if (String.CompareOrdinal(cmdData, SubmitId) == 0)
{
// Requesting submit page. Do not change the current activity, but mark it as changed so that
// it appears to the user that it has changed.
ActivityHasChanged = true;
string title = GetFramesetMsg(FramesetStringId.SubmitPageTitleHtml);
string message;
string saveBtn = GetFramesetMsg(FramesetStringId.SubmitPageSaveButtonHtml);
if (Session.HasCurrentActivity)
{
message = GetFramesetMsg(FramesetStringId.SubmitPageMessageHtml);
}
else
{
message = GetFramesetMsg(FramesetStringId.SubmitPageMessageNoCurrentActivityHtml);
}
WriteSubmitPage(title, message, saveBtn);
}
else
{
long activityId;
if (long.TryParse(cmdData, out activityId))
{
// If the requested activity is the current activity, then do not do the navigation.
// We skip it because moving to the activity basically exits the current attempt and creates
// a new one. That new one also increments the attempt count. If we don't do the move, we
// pretend it was done. This will force the content frame to be reloaded with the current
// activity.
if (IsCurrentActiveActivity(activityId))
{
ActivityHasChanged = true;
}
else
{
if (!ProcessNavigationRequests(Session))
{
if (Session.IsMoveToActivityValid(activityId))
{
MoveToActivity(Session, activityId);
ActivityHasChanged = true;
}
}
else
{
ActivityHasChanged = true;
}
}
}
}
if (!ActivityHasChanged)
{
// Moving to the selected activity is not valid.
WriteError(ResHelper.Format(GetFramesetMsg(FramesetStringId.MoveToActivityFailedHtml), ThemeFolderPath), true);
}
}
break;
case Commands.DoSave:
{
// Do nothing. The information will be saved since the page was posted.
}
break;
case Commands.DoSubmit:
{
if (Session.View == SessionView.Execute)
{
ProcessNavigationRequests(Session);
Session.Exit();
}
ActivityHasChanged = true;
}
break;
}
}
}
// If an error has been registered (and it's not the submit
// page rendering), don't attempt to render the content.
if (HasError && !SubmitPageDisplayed)
{
if (!SessionIsReadOnly)
{
Session.CommitChanges();
}
return;
}
// There was no error, so go ahead and render the content from the package.
// If the current activity has changed in the processing of this page, then render the current activity's resource.
// Otherwise, ask the application which resource to read.
if (ActivityHasChanged)
{
// If the activity has changed, we render the content page without rendering the content. The page will then
// reload the content frame with the new activity.
if (!SessionIsReadOnly)
{
Session.CommitChanges();
}
}
else
{
// Render the requested file in the current activity.
RenderPackageContent(GetResourcePath());
// If there was no error, end the response. Otherwise, we wait and render the error on the page.
if (!HasError)
{
Response.End();
}
}
}
