protected virtual void ChangeCurrentBrowserViewModel(ViewerBaseVM newCurrentBrowserViewModel)
{
//if (_CurrentBrowserViewModel != null)
// _CurrentBrowserViewModel.Dispose();
//Unload previous handler
if (CurrentBrowserViewModel != null)
{
CurrentBrowserViewModel.PropertyChanged -= propertyChangeHandler;
CurrentBrowserViewModel.DirectoryChanged -= dirChangedHandler;
CurrentBrowserViewModel.OnUnload();
}
bool showPreview = CurrentBrowserViewModel != null ? CurrentBrowserViewModel.IsPreviewerVisible : false;
newCurrentBrowserViewModel.IsPreviewerVisible = showPreview;
_currentBrowserViewModel = newCurrentBrowserViewModel;
if (CurrentBrowserViewModel != null)
{
CurrentBrowserViewModel.PropertyChanged += propertyChangeHandler;
CurrentBrowserViewModel.DirectoryChanged += dirChangedHandler;
}
IsDirectoryTreeVisible = CurrentBrowserViewModel.IsDirectoryTreeEnabled;
UpdateOtherViewModels(newCurrentBrowserViewModel);
NotifyPropertyChanged("CurrentBrowserViewModel");
NotifyPropertyChanged("CurrentEntryViewModel");
NotifyPropertyChanged("CurrentEntryModel");
NotifyPropertyChanged("CurrentEntry");
}
private void AddNavigationHistory(ViewerBaseVM item)
{
if (NavigationPosition != -1)
{
for (int i = 0; i < NavigationPosition; i++)
{
NavigationHistory.RemoveAt(0);
}
}
while (NavigationHistory.Count > 10)
{
NavigationHistory.RemoveAt(NavigationHistory.Count - 1);
}
if (NavigationHistory.IndexOf(item) != -1)
{
NavigationHistory.Remove(item);
}
NavigationHistory.Insert(0, item);
NavigationPosition = 0;
//if (jpList != null)
//{
// jpList.AddToRecent(item.EmbeddedDirectoryModel.EmbeddedDirectoryEntry.ParseName);
// jpList.Refresh();
//}
}
internal void ChangeNavigationPosition(ViewerBaseVM item)
{
int pos = NavigationHistory.IndexOf(item);
if (pos != -1)
{
ChangeNavigationPosition(pos);
}
}
protected void ChangeCurrentBrowserViewModel(ViewerBaseVM viewModel, bool updateHistory)
{
ViewerBaseVM currentBrowserViewModel = CurrentBrowserViewModel;
base.ChangeCurrentBrowserViewModel(viewModel);
if (updateHistory && !viewModel.Equals(currentBrowserViewModel))
{
AddNavigationHistory(viewModel);
}
}
/// <summary>
/// Called when CurrentBrowserViewModel updated, used to update other UI VMs.
/// </summary>
/// <param name="newViewModel"></param>
protected virtual void UpdateOtherViewModels(ViewerBaseVM newViewModel)
{
_breadcrumbViewModel.IsBreadcrumbEnabled = newViewModel.IsBreadcrumbVisible;
if (newViewModel is BaseW3ViewerViewModel)
{
BaseW3ViewerViewModel w3VM = newViewModel as BaseW3ViewerViewModel;
_searchViewModel.ConfirmedParseName = w3VM.WebAddress.AbsoluteUri;
return;
}
if (newViewModel is BaseDirectoryViewerViewModel <FI, DI, FSI> )
{
BaseDirectoryViewerViewModel <FI, DI, FSI> directoryViewerVM = newViewModel as BaseDirectoryViewerViewModel <FI, DI, FSI>;
DirectoryModel <FI, DI, FSI> directoryModel = directoryViewerVM.EmbeddedDirectoryViewModel.EmbeddedDirectoryModel;
_navigationViewModel.SelectedModel = directoryModel;
_breadcrumbViewModel.SelectedModel = directoryModel;
_searchViewModel.SelectedModel = directoryModel;
return;
}
if (newViewModel is MediaViewerViewModel <FI, DI, FSI> )
{
MediaViewerViewModel <FI, DI, FSI> fileViewerVM = newViewModel as MediaViewerViewModel <FI, DI, FSI>;
EntryModel <FI, DI, FSI> fileModel = fileViewerVM.EmbeddedEntryViewModel.EmbeddedModel;
DirectoryModel <FI, DI, FSI> parentModel = _profile.ConstructDirectoryModel(fileModel.Parent);
_navigationViewModel.SelectedModel = parentModel;
_breadcrumbViewModel.SelectedModel = fileModel;
_searchViewModel.SelectedModel = fileModel;
return;
}
#if DEBUG
throw new NotImplementedException();
#endif
}
protected virtual void setupCommands()
{
ContextMenuCommand = new SimpleCommand()
{
CanExecuteDelegate = (x) =>
{
ViewerBaseVM vm = (x as ViewerBaseVM);
return(vm.IsContextMenuEnabled);
},
ExecuteDelegate = (x) =>
{
ViewerBaseVM vm = (x as ViewerBaseVM);
if (vm.IsContextMenuEnabled)
{
Point pt = UITools.GetScreenMousePosition();
switch (vm.ContextMenu(pt))
{
case "open": if (ExpandCommand != null)
{
ExpandCommand.Execute(vm);
}
break;
case "rename": if (RenameCommand != null)
{
RenameCommand.Execute(vm);
}
break;
case "refresh": if (RefreshCommand != null)
{
RefreshCommand.Execute(vm);
}
break;
}
}
}
};
RefreshCommand = new SimpleCommand()
{
ExecuteDelegate = (x) =>
{
Refresh();
}
};
//ExpandCommand = new SimpleCommand()
//{
// CanExecuteDelegate =
// (x) =>
// {
// ViewerBaseViewModel<FI, DI, FSI> vm = (x as ViewerBaseViewModel<FI, DI, FSI>);
// return vm == null ? false : vm.CanExpand;
// },
// ExecuteDelegate =
// (x) =>
// {
// ViewerBaseViewModel<FI, DI, FSI> vm = (x as ViewerBaseViewModel<FI, DI, FSI>);
// vm.Expand();
// }
//};
}
protected override void ChangeCurrentBrowserViewModel(ViewerBaseVM viewModel)
{
ChangeCurrentBrowserViewModel(viewModel, true);
}
