/// <summary>
/// Switch model contexts.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
/// <returns>True if a switch did occur. False otherwise.</returns>
protected virtual bool SwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
if (this.ModelData.CurrentModelContext.RootElement != null)
{
// notify that the current document will be closed
IMessageBoxService messageBox = this.GlobalServiceProvider.Resolve <IMessageBoxService>();
if (messageBox.ShowYesNoCancel("The currently opened document will be closed in the process of a context switch! Do you want to proceed?", CustomDialogIcons.Question) != CustomDialogResults.Yes)
{
return(false);
}
}
PleaseWaitHelper.Show();
BeforeSwitchContexts(newContextVM, oldContextVM);
if (this.ModelData.CurrentModelContext.RootElement != null)
{
this.ModelData.CurrentModelContext.Reset();
}
this.Reset();
// update model data
this.ModelData.CurrentModelContext = newContextVM.ModelContext;
AfterSwitchContexts(newContextVM, oldContextVM);
PleaseWaitHelper.Hide();
return(true);
}
/// <summary>
/// This method is called from the SwitchContexts method after a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected virtual void AfterSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
if (newContextVM != null)
{
//if (newContextVM.DiagramSurfaceModel != null)
// this.EventManager.GetEvent<ShowViewModelRequestEvent>().Publish(new ShowViewModelRequestEventArgs(newContextVM.DiagramSurfaceModel));
newContextVM.OnActivated();
}
}
/// <summary>
/// This method is called from the SwitchContexts method before a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected override void BeforeSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
if (oldContextVM != null)
{
if (this.LayoutManager != null)
{
this.LayoutManager.SaveCurrentConfiguration(oldContextVM.ModelContext.Name);
}
}
base.BeforeSwitchContexts(newContextVM, oldContextVM);
}
/// <summary>
/// This method is called from the SwitchContexts method after a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected override void AfterSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
base.AfterSwitchContexts(newContextVM, oldContextVM);
if (newContextVM != null)
{
if (this.LayoutManager != null)
{
this.LayoutManager.RestoreConfiguration(newContextVM.ModelContext.Name, this.AllViewModels);
}
}
this.CloseCommand.RaiseCanExecuteChanged();
this.SaveAsModelCommand.RaiseCanExecuteChanged();
this.SaveModelCommand.RaiseCanExecuteChanged();
}
/// <summary>
/// This method is called from the SwitchContexts method before a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected virtual void BeforeSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
if (oldContextVM != null)
{
foreach (BaseDiagramSurfaceViewModel vm in oldContextVM.AdditionalDiagramSurfaceModels)
{
if (vm.IsDockingPaneVisible)
{
this.EventManager.GetEvent <CloseViewModelRequestEvent>().Publish(new CloseViewModelRequestEventArgs(vm));
}
}
foreach (BaseDiagramSurfaceViewModel vm in oldContextVM.PluginDiagramSurfaceModels)
{
if (vm.IsDockingPaneVisible)
{
this.EventManager.GetEvent <CloseViewModelRequestEvent>().Publish(new CloseViewModelRequestEventArgs(vm));
}
}
for (int i = unknownOpenedModels.Count - 1; i >= 0; i--)
{
BaseDockingViewModel vm = unknownOpenedModels[i];
if (!vm.IsDisposed)
{
this.EventManager.GetEvent <CloseViewModelRequestEvent>().Publish(new CloseViewModelRequestEventArgs(vm, true));
}
}
}
// close all view models that do not belong to the new context
foreach (BaseDockingViewModel vm in this.AllViewModels)
{
if (vm is BaseDiagramSurfaceViewModel)
{
if ((vm as BaseDiagramSurfaceViewModel).ModelContextName != newContextVM.ModelContext.Name &&
!String.IsNullOrEmpty((vm as BaseDiagramSurfaceViewModel).ModelContextName))
{
this.EventManager.GetEvent <CloseViewModelRequestEvent>().Publish(new CloseViewModelRequestEventArgs(vm));
}
}
}
}
/// <summary>
/// This method is called from the SwitchContexts method after a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected override void AfterSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
base.AfterSwitchContexts(newContextVM, oldContextVM);
if (newContextVM != null)
{
if (this.LayoutManager != null)
this.LayoutManager.RestoreConfiguration(newContextVM.ModelContext.Name, this.AllViewModels);
}
this.CloseCommand.RaiseCanExecuteChanged();
this.SaveAsModelCommand.RaiseCanExecuteChanged();
this.SaveModelCommand.RaiseCanExecuteChanged();
}
/// <summary>
/// This method is called from the SwitchContexts method before a switch occurs.
/// </summary>
/// <param name="newContextVM">New model context vm.</param>
/// <param name="oldContextVM">Old model context vm.</param>
protected override void BeforeSwitchContexts(ModelContextViewModel newContextVM, ModelContextViewModel oldContextVM)
{
if (oldContextVM != null)
{
if (this.LayoutManager != null)
this.LayoutManager.SaveCurrentConfiguration(oldContextVM.ModelContext.Name);
}
base.BeforeSwitchContexts(newContextVM, oldContextVM);
}
