/// <summary>
/// Gets a list of available screens ("filters") of the current <see cref="NavigationData"/>. This method can return either filtering screens that are showing
/// results of predefined query (<paramref name="onlySearchScreens"/>=<c>false</c>), or custom search screens that allow user input for searching (<paramref name="onlySearchScreens"/>=<c>true</c>).
/// </summary>
/// <param name="onlySearchScreens"><c>true</c> to return only search screens.</param>
/// <returns>List of workflow actions</returns>
public IList <WorkflowAction> GetWorkflowActions(bool onlySearchScreens = false)
{
// Inherit the actions of the parent if necessary. This is particularly the case if this is a sub-view
// as we need to ensure that the base/parent view is updated when switching screens as any sub-views
// will be popped from the navigation stack.
if (_inheritActions)
{
return(Parent != null?Parent.GetWorkflowActions(onlySearchScreens) : new List <WorkflowAction>());
}
IList <WorkflowAction> actions = new List <WorkflowAction>(_availableScreens.Count);
int ct = 0;
foreach (AbstractScreenData screen in _availableScreens)
{
if (onlySearchScreens && !(screen is AbstractSearchScreenData))
{
continue;
}
if (!onlySearchScreens && (screen is AbstractSearchScreenData))
{
continue;
}
AbstractScreenData newScreen = screen; // Necessary to be used in closure
WorkflowAction action = new MethodDelegateAction(Guid.NewGuid(),
_navigationContextName + "->" + newScreen.MenuItemLabel, new Guid[] { _currentWorkflowStateId },
LocalizationHelper.CreateResourceString(newScreen.MenuItemLabel), () =>
{
_currentScreenData.ReleaseScreenData();
_currentScreenData = newScreen;
string parent = Parent == null ? _navigationContextName : Parent.CurrentScreenData.GetType().ToString();
// Do not save search screens as selection, they are only a "transient" state.
if (!(newScreen is AbstractSearchScreenData))
{
SaveScreenHierarchy(parent, newScreen.GetType().ToString());
}
IWorkflowManager workflowManager = ServiceRegistration.Get <IWorkflowManager>();
// The last screen could have stepped into a deeper media navigation context when it had produced
// sub views. So we first have to revert our workflow to the base workflow id before moving to the new screen.
if (workflowManager.CurrentNavigationContext.WorkflowState.StateId == _baseWorkflowStateId)
{ // If we're already in the correct the state, update the screen manually
_currentScreenData.CreateScreenData(this);
SwitchToCurrentScreen();
}
else
{
// WF-Manager updates the screen for us
workflowManager.NavigatePopToState(_baseWorkflowStateId, false);
}
})
{
DisplayCategory = Consts.FILTERS_WORKFLOW_CATEGORY,
SortOrder = ct++.ToString(), // Sort in the order we have built up the filters
};
actions.Add(action);
}
return(actions);
}
protected void BuildWorkflowActions()
{
_dynamicWorkflowActions = new List <WorkflowAction>(_availableScreens.Count);
int ct = 0;
foreach (AbstractScreenData screen in _availableScreens)
{
AbstractScreenData newScreen = screen; // Necessary to be used in closure
WorkflowAction action = new MethodDelegateAction(Guid.NewGuid(),
_navigationContextName + "->" + newScreen.MenuItemLabel, new Guid[] { _currentWorkflowStateId },
LocalizationHelper.CreateResourceString(newScreen.MenuItemLabel), () =>
{
_currentScreenData.ReleaseScreenData();
_currentScreenData = newScreen;
IWorkflowManager workflowManager = ServiceRegistration.Get <IWorkflowManager>();
// The last screen could have stepped into a deeper media navigation context when it had produced
// sub views. So we first have to revert our workflow to the base workflow id before moving to the new screen.
if (workflowManager.CurrentNavigationContext.WorkflowState.StateId == _baseWorkflowStateId)
{ // If we're already in the correct the state, update the screen manually
_currentScreenData.CreateScreenData(this);
SwitchToCurrentScreen();
}
else
{
// WF-Manager updates the screen for us
workflowManager.NavigatePopToState(_baseWorkflowStateId, false);
}
})
{
DisplayCategory = Consts.FILTERS_WORKFLOW_CATEGORY,
SortOrder = ct++.ToString(), // Sort in the order we have built up the filters
};
_dynamicWorkflowActions.Add(action);
}
}
/// <summary>
/// Restores resources which are needed by the current screen.
/// </summary>
public void Enable()
{
_currentScreenData.CreateScreenData(this);
UpdateLayout();
}
/// <summary>
/// Restores resources which are needed by the current screen.
/// </summary>
public void Enable()
{
_currentScreenData.CreateScreenData(this);
}