// When page is navigated to set data context to selected item in itemType
protected override void OnNavigatedTo(NavigationEventArgs e)
{
// trace data
TraceHelper.AddMessage("ListPage: OnNavigatedTo");
// handle list picker navigation cases
if (sortPopupOpen == true)
{
SortPopup.IsOpen = true;
return;
}
if (importPopupOpen == true)
{
ImportListPopup.IsOpen = true;
return;
}
string IDString = "";
Guid id;
// get the type of list to display
if (NavigationContext.QueryString.TryGetValue("type", out typeString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID of the object to display
if (NavigationContext.QueryString.TryGetValue("ID", out IDString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID
id = new Guid(IDString);
switch (typeString)
{
case "Folder":
// get the folder and make it the datacontext
try
{
folder = App.ViewModel.LoadFolder(id);
// if the load failed, this folder has been deleted
if (folder == null)
{
// the folder isn't found - this can happen when the folder we were just
// editing was removed in FolderEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID of the list to display
if (NavigationContext.QueryString.TryGetValue("ParentID", out IDString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID
id = new Guid(IDString);
// get the current list name
string listName = null;
Guid? listID = null;
Guid itemTypeID;
if (id == Guid.Empty)
{
listName = folder.Name;
itemTypeID = folder.ItemTypeID;
}
else
{
var item = folder.Items.Single(i => i.ID == id);
listName = item.Name;
listID = (Guid?)id;
itemTypeID = item.ItemTypeID;
// change the "edit folder" appbar button title to "edit list"
ApplicationBarIconButton button = null;
for (int i = 0; i < ApplicationBar.Buttons.Count; i++)
{
button = (ApplicationBarIconButton)ApplicationBar.Buttons[i];
if (button.Text.StartsWith("edit", StringComparison.InvariantCultureIgnoreCase))
break;
}
if (button.Text.StartsWith("edit", StringComparison.InvariantCultureIgnoreCase))
button.Text = "edit list";
}
// construct a synthetic item that represents the list of items for which the
// ParentID is the parent. this also works for the root list in a folder, which
// is represented with a ParentID of Guid.Empty.
list = new Item()
{
ID = id,
Name = listName,
FolderID = folder.ID,
IsList = true,
ItemTypeID = itemTypeID,
Items = folder.Items.Where(i => i.ParentID == listID).ToObservableCollection()
};
}
catch (Exception ex)
{
// the folder isn't found - this can happen when the folder we were just
// editing was removed in FolderEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage(String.Format("ListPage: Navigate back (exception: {0})", ex.Message));
// navigate back
NavigateBack();
return;
}
break;
case "Tag":
// create a filter
try
{
tag = App.ViewModel.Tags.Single(t => t.ID == id);
// construct a synthetic item that represents the list of items which
// have this tag.
list = new Item()
{
ID = Guid.Empty,
Name = String.Format("items with {0} tag", tag.Name),
Items = App.ViewModel.Items.Where(t => t.ItemTags.Any(tg => tg.TagID == tag.ID)).ToObservableCollection()
};
}
catch (Exception)
{
// the tag isn't found - this can happen when the tag we were just
// editing was removed in TagEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
break;
default:
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// set datacontext
ListGrid.DataContext = list;
// create the ListHelper
ListHelper = new ListHelper(
new RoutedEventHandler(CompleteCheckbox_Click),
new RoutedEventHandler(Tag_HyperlinkButton_Click));
// store the current listbox and ordering
ListHelper.ListBox = ItemsListBox;
ListHelper.OrderBy = ListMetadataHelper.GetListSortOrder(
App.ViewModel.PhoneClientFolder,
id == Guid.Empty ? (ClientEntity) folder : (ClientEntity) list);
// trace data
TraceHelper.AddMessage("Exiting ListPage OnNavigatedTo");
}
// When page is navigated to set data context to selected item in itemType
protected override void OnNavigatedTo(NavigationEventArgs e)
{
// trace data
TraceHelper.AddMessage("ListPage: OnNavigatedTo");
// handle list picker navigation cases
if (sortPopupOpen == true)
{
SortPopup.IsOpen = true;
return;
}
if (importPopupOpen == true)
{
ImportListPopup.IsOpen = true;
return;
}
string IDString = "";
Guid id;
// get the type of list to display
if (NavigationContext.QueryString.TryGetValue("type", out typeString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID of the object to display
if (NavigationContext.QueryString.TryGetValue("ID", out IDString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID
id = new Guid(IDString);
switch (typeString)
{
case "Folder":
// get the folder and make it the datacontext
try
{
folder = App.ViewModel.LoadFolder(id);
// if the load failed, this folder has been deleted
if (folder == null)
{
// the folder isn't found - this can happen when the folder we were just
// editing was removed in FolderEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID of the list to display
if (NavigationContext.QueryString.TryGetValue("ParentID", out IDString) == false)
{
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// get the ID
id = new Guid(IDString);
// get the current list name
string listName = null;
Guid? listID = null;
Guid itemTypeID;
if (id == Guid.Empty)
{
listName = folder.Name;
itemTypeID = folder.ItemTypeID;
}
else
{
var item = folder.Items.Single(i => i.ID == id);
listName = item.Name;
listID = (Guid?)id;
itemTypeID = item.ItemTypeID;
// change the "edit folder" appbar button title to "edit list"
ApplicationBarIconButton button = null;
for (int i = 0; i < ApplicationBar.Buttons.Count; i++)
{
button = (ApplicationBarIconButton)ApplicationBar.Buttons[i];
if (button.Text.StartsWith("edit", StringComparison.InvariantCultureIgnoreCase))
{
break;
}
}
if (button.Text.StartsWith("edit", StringComparison.InvariantCultureIgnoreCase))
{
button.Text = "edit list";
}
}
// construct a synthetic item that represents the list of items for which the
// ParentID is the parent. this also works for the root list in a folder, which
// is represented with a ParentID of Guid.Empty.
list = new Item()
{
ID = id,
Name = listName,
FolderID = folder.ID,
IsList = true,
ItemTypeID = itemTypeID,
Items = folder.Items.Where(i => i.ParentID == listID).ToObservableCollection()
};
}
catch (Exception ex)
{
// the folder isn't found - this can happen when the folder we were just
// editing was removed in FolderEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage(String.Format("ListPage: Navigate back (exception: {0})", ex.Message));
// navigate back
NavigateBack();
return;
}
break;
case "Tag":
// create a filter
try
{
tag = App.ViewModel.Tags.Single(t => t.ID == id);
// construct a synthetic item that represents the list of items which
// have this tag.
list = new Item()
{
ID = Guid.Empty,
Name = String.Format("items with {0} tag", tag.Name),
Items = App.ViewModel.Items.Where(t => t.ItemTags.Any(tg => tg.TagID == tag.ID)).ToObservableCollection()
};
}
catch (Exception)
{
// the tag isn't found - this can happen when the tag we were just
// editing was removed in TagEditor, which then goes back to ListPage.
// this will send us back to the MainPage which is appropriate.
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
break;
default:
// trace page navigation
TraceHelper.StartMessage("ListPage: Navigate back");
// navigate back
NavigateBack();
return;
}
// set datacontext
ListGrid.DataContext = list;
// create the ListHelper
ListHelper = new ListHelper(
new RoutedEventHandler(CompleteCheckbox_Click),
new RoutedEventHandler(Tag_HyperlinkButton_Click));
// store the current listbox and ordering
ListHelper.ListBox = ItemsListBox;
ListHelper.OrderBy = ListMetadataHelper.GetListSortOrder(
App.ViewModel.PhoneClientFolder,
id == Guid.Empty ? (ClientEntity)folder : (ClientEntity)list);
// trace data
TraceHelper.AddMessage("Exiting ListPage OnNavigatedTo");
}
