/// <summary>
/// Ons the element changed.
/// </summary>
/// <param name="e">E.</param>
protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.ListView> e)
{
base.OnElementChanged(e);
if (e.OldElement is EnhancedListView oldElement)
{
oldElement.Renderer = null;
if (Control != null)
{
Control.Delegate = null;
}
if (ScrollDelegate != null)
{
ScrollDelegate.Source = null;
ScrollDelegate.Element = null;
ScrollDelegate.Dispose();
ScrollDelegate = null;
}
}
if (e.NewElement is EnhancedListView newElement)
{
newElement.Renderer = this;
ScrollDelegate = new ScrollDelegate(newElement, Control.Source);
Control.Delegate = ScrollDelegate;
}
}
protected override void Dispose(bool disposing)
{
if (!_disposed && disposing)
{
_disposed = true;
ScrollDelegate.Source = null;
ScrollDelegate.Element = null;
ScrollDelegate?.Dispose();
ScrollDelegate = null;
Control.Delegate = null;
}
base.Dispose(disposing);
}
/// <summary>
/// Ons the element changed.
/// </summary>
/// <param name="e">E.</param>
protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.ListView> e)
{
base.OnElementChanged(e);
if (e.OldElement is EnhancedListView oldElement)
{
/*
* oldElement.RendererScrollBy -= ScrollBy;
* oldElement.RendererScrollTo -= ScrollTo;
* oldElement.RendererScrollOffset -= ScrollOffset;
* oldElement.RendererHeaderHeight -= HeaderHeight;
* oldElement.GetScrollEnabled -= GetScrollEnabled;
*/
oldElement.Renderer = null;
if (Control != null)
{
Control.Delegate = null;
}
if (ScrollDelegate != null)
{
ScrollDelegate.Source = null;
ScrollDelegate.Element = null;
ScrollDelegate = null;
}
}
if (e.NewElement is EnhancedListView newElement)
{
/*
* newElement.RendererScrollBy += ScrollBy;
* newElement.RendererScrollTo += ScrollTo;
* newElement.RendererScrollOffset += ScrollOffset;
* newElement.RendererHeaderHeight += HeaderHeight;
*/
newElement.Renderer = this;
ScrollDelegate = new ScrollDelegate(newElement, Control.Source);
Control.Delegate = ScrollDelegate;
}
}
public void Update(UITableView tableView, Cell cell, UITableViewCell nativeCell)
{
var parentListView = cell.RealParent as ListView;
var recycling = parentListView != null && parentListView.CachingStrategy == ListViewCachingStrategy.RecycleElement;
if (_cell != cell && recycling)
{
if (_cell != null)
{
((INotifyCollectionChanged)_cell.ContextActions).CollectionChanged -= OnContextItemsChanged;
}
((INotifyCollectionChanged)cell.ContextActions).CollectionChanged += OnContextItemsChanged;
}
var height = Frame.Height;
var width = tableView.Frame.Width;
nativeCell.Frame = new RectangleF(0, 0, width, height);
nativeCell.SetNeedsLayout();
var handler = new PropertyChangedEventHandler(OnMenuItemPropertyChanged);
_tableView = tableView;
SetupSelection(tableView);
if (_cell != null)
{
if (!recycling)
{
_cell.PropertyChanged -= OnCellPropertyChanged;
}
if (_menuItems.Count > 0)
{
if (!recycling)
{
((INotifyCollectionChanged)_cell.ContextActions).CollectionChanged -= OnContextItemsChanged;
}
foreach (var item in _menuItems)
{
item.PropertyChanged -= handler;
}
}
_menuItems.Clear();
}
_menuItems.AddRange(cell.ContextActions);
_cell = cell;
if (!recycling)
{
cell.PropertyChanged += OnCellPropertyChanged;
((INotifyCollectionChanged)_cell.ContextActions).CollectionChanged += OnContextItemsChanged;
}
var isOpen = false;
if (_scroller == null)
{
_scroller = new UIScrollView(new RectangleF(0, 0, width, height));
_scroller.ScrollsToTop = false;
_scroller.ShowsHorizontalScrollIndicator = false;
if (Forms.IsiOS8OrNewer)
{
_scroller.PreservesSuperviewLayoutMargins = true;
}
ContentView.AddSubview(_scroller);
}
else
{
_scroller.Frame = new RectangleF(0, 0, width, height);
isOpen = ScrollDelegate.IsOpen;
for (var i = 0; i < _buttons.Count; i++)
{
var b = _buttons[i];
b.RemoveFromSuperview();
b.Dispose();
}
_buttons.Clear();
ScrollDelegate.Unhook(_scroller);
ScrollDelegate.Dispose();
}
if (ContentCell != nativeCell)
{
if (ContentCell != null)
{
ContentCell.RemoveFromSuperview();
ContentCell = null;
}
ContentCell = nativeCell;
//Hack: if we have a ImageCell the insets are slightly different,
//the inset numbers user below were taken using the Reveal app from the default cells
if ((ContentCell as CellTableViewCell)?.Cell is ImageCell)
{
nfloat imageCellInsetLeft = 57;
nfloat imageCellInsetRight = 0;
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
{
imageCellInsetLeft = 89;
imageCellInsetRight = imageCellInsetLeft / 2;
}
SeparatorInset = new UIEdgeInsets(0, imageCellInsetLeft, 0, imageCellInsetRight);
}
_scroller.AddSubview(nativeCell);
}
SetupButtons(width, height);
UIView container = null;
var totalWidth = width;
for (var i = _buttons.Count - 1; i >= 0; i--)
{
var b = _buttons[i];
totalWidth += b.Frame.Width;
if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
_scroller.AddSubview(b);
}
else
{
if (container == null)
{
container = new iOS7ButtonContainer(b.Frame.Width);
_scroller.InsertSubview(container, 0);
}
container.AddSubview(b);
}
}
_scroller.Delegate = new ContextScrollViewDelegate(container, _buttons, isOpen);
_scroller.ContentSize = new SizeF(totalWidth, height);
if (isOpen)
{
_scroller.SetContentOffset(new PointF(ScrollDelegate.ButtonsWidth, 0), false);
}
else
{
_scroller.SetContentOffset(new PointF(0, 0), false);
}
}
public void PrepareForDeselect()
{
ScrollDelegate.PrepareForDeselect(_scroller);
}
public static extern ScrollDelegate SetScrollCallback(WindowHandle window, ScrollDelegate callback);
protected void OnScroll(float oldPos, float newPos)
{
float delta = newPos - oldPos;
int firstVisibleCellIndex = FirstVisibleCellIndex;
int lastVisibleCellIndex = LastVisibleCellIndex;
if (delta > 0)
{
int rowsCount = RowsCount;
// wipe invisible rows
while (!IsCellVisible(firstVisibleCellIndex, newPos) && VisibleCellsCount > 0)
{
RemoveVisibleCell(FirstVisibleCell);
++firstVisibleCellIndex;
}
if (VisibleCellsCount > 0) // not all rows were wiped: just append more visible cells at the end
{
for (int cellIndex = lastVisibleCellIndex + 1; cellIndex < rowsCount && IsCellVisible(cellIndex, newPos); ++cellIndex)
{
CTableViewCell cell = TableCellForRow(cellIndex);
m_visibleCells.AddLastItem(cell);
}
}
else
{
int rowIndex = FindFirstVisibleRow(newPos, lastVisibleCellIndex + 1, rowsCount - 1);
while (rowIndex < rowsCount && IsCellVisible(rowIndex, newPos))
{
CTableViewCell cell = TableCellForRow(rowIndex);
m_visibleCells.AddLastItem(cell);
++rowIndex;
}
}
}
else if (delta < 0)
{
while (this.VisibleCellsCount > 0 && !IsCellVisible(lastVisibleCellIndex, newPos))
{
RemoveVisibleCell(LastVisibleCell);
--lastVisibleCellIndex;
}
if (VisibleCellsCount > 0) // not all rows were wiped: just prepend more visible cells at the beginning
{
for (int cellIndex = firstVisibleCellIndex - 1; cellIndex >= m_cellsEntries.HeadIndex && IsCellVisible(cellIndex, newPos); --cellIndex)
{
CTableViewCell cell = TableCellForRow(cellIndex);
m_visibleCells.AddFirstItem(cell);
}
}
else
{
int rowIndex = FindLastVisibleRow(newPos, m_cellsEntries.HeadIndex, firstVisibleCellIndex - 1);
while (rowIndex >= m_cellsEntries.HeadIndex && IsCellVisible(rowIndex, newPos))
{
CTableViewCell cell = TableCellForRow(rowIndex);
m_visibleCells.AddFirstItem(cell);
--rowIndex;
}
}
}
if (ScrollDelegate != null)
{
ScrollDelegate.OnTableScroll(this, oldPos);
}
}
private void Initialize()
{
this.holoScriptApp = new HoloScriptApplication();
//this.logHandler = new HoloScript.LogsGeneratedDelegate(OnLogGenerated);
//this.holoScriptApp.OnLogGenerated += logHandler;
//
// Required for Windows Form Designer support
//
InitializeComponent();
filteredOutFunctionList = new ArrayList();
filteredOutLogQueue = new System.Collections.Queue();
// build the error code hash tables
LoadErrorCodeTables();
this.scrollUpHandler = new ScrollDelegate(this.LogListViewScrollUp);
this.scrollDownHandler = new ScrollDelegate(this.LogListViewScrollDown);
this.scrollLeftHandler = new ScrollDelegate(this.LogListViewScrollLeft);
this.scrollRightHandler = new ScrollDelegate(this.LogListViewScrollRight);
this.lv_LogInformation.OnScrollUp += scrollUpHandler;
this.lv_LogInformation.OnScrollDown += scrollDownHandler;
this.lv_LogInformation.OnScrollLeft += scrollLeftHandler;
this.lv_LogInformation.OnScrollRight += scrollRightHandler;
// this.numLogEntries = 0;
// this.numVisibleLogEntries = 0;
this.currentLogEntry = 0;
// this.lastLogEntryInListView = -1;
lv_ToolTip = new ToolTip();
lv_ToolTip.AutoPopDelay = 4000;
lv_ToolTip.InitialDelay = 500;
lv_ToolTip.ReshowDelay = 500;
lv_ToolTip.ShowAlways = true;
this.diskLimitUnit = "KB";
this.memLimitUnit = "KB";
this.networkSpeed = 100;
this.SavedLogFileName = "";
this.searchInfo = "";
// this.loadingPreviouslySavedLogFile = false;
}
public static extern ScrollDelegate SetScrollCallback(IntPtr window, ScrollDelegate callback);
private void OnDestroy()
{
onDrag = null;
onEndDrag = null;
}
public ScrollCommand(ScrollDelegate del, int direction)
{
_del = del;
_direction = direction;
}
