/// <summary>
/// Create a dropdown viewmodel object that can be used to manage a dropdown view
/// that contains a browser naviagtion (directory picker) control.
/// </summary>
/// <param name="treeBrowser"></param>
/// <param name="recentLocations"></param>
/// <param name="resultCallback"></param>
/// <returns></returns>
public static IDropDownViewModel CreateDropDownViewModel(
IBrowserViewModel treeBrowser,
IBookmarksViewModel recentLocations,
DropDownClosedResult resultCallback)
{
return(new DropDownViewModel(treeBrowser, recentLocations, resultCallback));
}
/// <summary>
/// Class constructor
/// </summary>
public DropDownViewModel(
IBrowserViewModel treeBrowser,
IBookmarksViewModel recentLocations,
DropDownClosedResult resultCallback)
: base(treeBrowser, recentLocations)
{
ResultCallback = resultCallback;
}
/// <summary>
/// Method is invoked to copy the given bookmarks into the local
/// bookmark locations object (typically called up close of browser dialog).
/// </summary>
/// <param name="bookmarkedLocations"></param>
private void CloneBookMarks(IBookmarksViewModel bookmarkedLocations)
{
if (bookmarkedLocations == null)
{
return;
}
this.BookmarkedLocations = bookmarkedLocations.CloneBookmark();
}
/// <summary>
/// Class constructor
/// </summary>
/// <param name="initialPath"></param>
/// <param name="bookmarks"></param>
/// <param name="specialFolderVisibility"></param>
public FolderBrowserControler(string initialPath
, IBookmarksViewModel bookmarks
, bool specialFolderVisibility = true)
: this()
{
_SpecialFolderVisibility = specialFolderVisibility;
_InitialPath = initialPath;
BookmarkedLocations = bookmarks;
}
/// <summary>
/// Constructs a few initial entries for
/// the recent folder collection that implements folder bookmarks.
/// </summary>
/// <returns></returns>
private IBookmarksViewModel ConstructBookmarks()
{
IBookmarksViewModel ret = FileSystemModels.Factory.CreateBookmarksViewModel();
ret.AddFolder(@"C:\Windows");
ret.AddFolder(@"C:\Users");
ret.AddFolder(@"C:\Program Files");
ret.SelectedItem = ret.DropDownItems.First();
return(ret);
}
/// <summary>
/// Copies all of the given bookmars into the destionations bookmarks collection.
/// </summary>
/// <param name="srcRecentFolders"></param>
/// <param name="dstRecentFolders"></param>
public void CloneBookmarks(IBookmarksViewModel srcRecentFolders,
IBookmarksViewModel dstRecentFolders)
{
if (srcRecentFolders == null || dstRecentFolders == null)
return;
dstRecentFolders.ClearFolderCollection();
// Set collection of recent folder locations
foreach (var item in srcRecentFolders.DropDownItems)
dstRecentFolders.AddFolder(item.ItemPath);
}
/// <summary>
/// Method is invoked to copy the given bookmarks into the local
/// bookmark locations object (typically called up close of browser dialog).
/// </summary>
/// <param name="bookmarkedLocations"></param>
private void CloneBookMarks(IBookmarksViewModel bookmarkedLocations)
{
if (bookmarkedLocations == null)
{
return;
}
BookmarkedLocations.BrowseEvent -= BookmarkedLocations_RequestChangeOfDirectory;
this.BookmarkedLocations = bookmarkedLocations.CloneBookmark();
BookmarkedLocations.BrowseEvent += BookmarkedLocations_RequestChangeOfDirectory;
}
/// <summary>
/// Class constructor
/// </summary>
public DialogBaseViewModel(IBrowserViewModel treeBrowser = null,
IBookmarksViewModel recentLocations = null)
{
if (treeBrowser == null)
{
TreeBrowser = new BrowserViewModel();
}
else
{
TreeBrowser = treeBrowser;
}
ResetBookmarks(recentLocations);
}
/// <summary>
/// Method is invoked when drop element is closed.
/// </summary>
/// <param name="bookmarks"></param>
/// <param name="selectedPath"></param>
/// <param name="result"></param>
private void DropDownClosedResult(IBookmarksViewModel bookmarks,
string selectedPath,
FolderBrowser.Dialogs.Interfaces.Result result)
{
if (result == FolderBrowser.Dialogs.Interfaces.Result.OK)
{
CloneBookMarks(bookmarks);
if (string.IsNullOrEmpty(selectedPath) == false)
{
this.Path = selectedPath;
}
else
{
this.Path = PathFactory.SysDefault.Path;
}
}
}
/// <summary>
/// Shows a sample progress dialog that was invoked via a bound viewmodel.
/// </summary>
/// <param name="context"></param>
/// <param name="progressIsFinite"></param>
internal async Task <string> ShowContentDialogFromVM(
object context
, bool progressIsFinite
)
{
// See Loaded event in FolderBrowserTreeView_Loaded method to understand initial load
var treeBrowserVM = FolderBrowserFactory.CreateBrowserViewModel(_SpecialFolderVisibility
, _InitialPath);
// Switch updates to view of by default to speed up load of view
// Loading the view will kick-off the browsing via View.Loaded Event
// and that in turn will switch on view updates ...
treeBrowserVM.UpdateView = false;
var fsDlg = FolderBrowserFactory.CreateDialogViewModel(treeBrowserVM, BookmarkedLocations);
var customDialog = CreateFolderBrowserDialog(new FolderBrowserContentDialogViewModel(fsDlg));
var coord = GetService <IContentDialogService>().Coordinator;
var manager = GetService <IContentDialogService>().Manager;
string returnPath = null;
// Show a progress dialog to initialize the viewmodel - in case file system is slow...
await coord.ShowMetroDialogAsync(context, customDialog).ContinueWith
(
(t) =>
{
if (t.Result == DialogIntResults.OK)
{
returnPath = treeBrowserVM.SelectedFolder;
}
}
);
if (fsDlg.BookmarkedLocations != null)
{
this.BookmarkedLocations = fsDlg.BookmarkedLocations.CloneBookmark();
}
return(returnPath);
}
/// <summary>
/// (Re-)Connects the Bookmark ViewModel with the
/// <seealso cref="IBrowserViewModel"/>.BrowsePath(string, bool) method via private method.
/// to enable user's path selection being input to folder browser.
/// </summary>
/// <param name="recentLocations"></param>
protected void ResetBookmarks(IBookmarksViewModel recentLocations)
{
if (BookmarkedLocations != null)
{
//BookmarkedLocations.BrowseEvent -= RecentLocations_RequestChangeOfDirectory;
WeakEventManager <ICanNavigate, BrowsingEventArgs>
.RemoveHandler(BookmarkedLocations, "BrowseEvent", RecentLocations_RequestChangeOfDirectory);
if (TreeBrowser != null)
{
//TreeBrowser.BookmarkFolder.RequestEditBookmarkedFolders -= BookmarkFolder_RequestEditBookmarkedFolders;
WeakEventManager <IEditBookmarks, EditBookmarkEvent>
.RemoveHandler(TreeBrowser.BookmarkFolder, "RequestEditBookmarkedFolders", BookmarkFolder_RequestEditBookmarkedFolders);
}
}
if (recentLocations != null)
{
// The recentlocations drop down is optionanl
// Its component and add/remove context menu accessibility in the treeview
// is only shown if caller supplied this object
BookmarkedLocations = recentLocations.CloneBookmark();
}
else
{
BookmarkedLocations = FileSystemModels.Factory.CreateBookmarksViewModel();
}
if (BookmarkedLocations != null)
{
//BookmarkedLocations.BrowseEvent += RecentLocations_RequestChangeOfDirectory;
WeakEventManager <ICanNavigate, BrowsingEventArgs>
.AddHandler(BookmarkedLocations, "BrowseEvent", RecentLocations_RequestChangeOfDirectory);
}
//TreeBrowser.BookmarkFolder.RequestEditBookmarkedFolders += BookmarkFolder_RequestEditBookmarkedFolders;
WeakEventManager <IEditBookmarks, EditBookmarkEvent>
.AddHandler(TreeBrowser.BookmarkFolder, "RequestEditBookmarkedFolders", BookmarkFolder_RequestEditBookmarkedFolders);
}
/// <summary>
/// Default Class Constructor
/// </summary>
protected FolderBrowserControler()
{
_SpecialFolderVisibility = true;
_InitialPath = string.Empty;
_BookmarkedLocations = null;
}
/// <summary>
/// Create a dialog viewmodel object that can be used to manage a dialog
/// that contains a browser naviagtion (directory picker) control.
/// </summary>
/// <param name="treeBrowser"></param>
/// <param name="recentLocations"></param>
/// <returns></returns>
public static IDialogViewModel CreateDialogViewModel(
IBrowserViewModel treeBrowser = null,
IBookmarksViewModel recentLocations = null)
{
return(new DialogViewModel(treeBrowser, recentLocations));
}
/// <summary>
/// Class constructor
/// </summary>
public DialogViewModel(IBrowserViewModel treeBrowser = null,
IBookmarksViewModel recentLocations = null)
: base(treeBrowser, recentLocations)
{
}
