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using System;
using System.Collections.Generic;
using System.Linq;
using Foundation;
using AppKit;
using WebKit;
using ObjCRuntime;
namespace macdoc
{
public enum SwipeSide
{
None,
Left,
Right
}
public class SwipeEventArgs : EventArgs
{
public SwipeSide Side { get; set; }
}
public partial class WebViewExtraordinaire : WebView
{
public event EventHandler<SwipeEventArgs> SwipeEvent;
public event EventHandler<SwipeEventArgs> OngoingSwipeEvent;
FindBarExtraordinaireController findBarController;
NSScrollView currentScrollView;
public WebViewExtraordinaire (IntPtr handle) : base (handle)
{
Initialize ();
}
void Initialize ()
{
// The initializations we do here are Lion-specific
if (!AppDelegate.IsOnLionOrBetter)
return;
findBarController = new FindBarExtraordinaireController ();
IsSwipeEnabled = NSEvent.IsSwipeTrackingFromScrollEventsEnabled;
FinishedLoad += (sender, e) => SetupFindBar (MainFrame.FrameView.DocumentView.EnclosingScrollView);
findBarController.View.FindTextChanged += (sender, e) => InternalPerformFinderAction (NSTextFinderAction.SetSearchString);
findBarController.View.CloseFindPanel += (sender, e) => InternalPerformFinderAction (NSTextFinderAction.HideFindInterface);
}
public bool IsSwipeEnabled { get; set; }
public override void ScrollWheel (NSEvent theEvent)
{
if (!IsSwipeEnabled)
return;
if (theEvent.Phase != NSEventPhase.Began)
return;
if (theEvent.DeltaX == 0 || Math.Abs (theEvent.DeltaX) <= Math.Abs (theEvent.DeltaY) * 8)
return;
if (Math.Abs (theEvent.DeltaX) < 1f)
return;
FireSwipeEvent (theEvent.DeltaX > 0 ? SwipeSide.Left : SwipeSide.Right);
}
public override void SwipeWithEvent (NSEvent theEvent)
{
// We are only interested in horizontal swipe
if (theEvent.DeltaX == 0)
return;
FireSwipeEvent (theEvent.DeltaX > 0 ? SwipeSide.Left : SwipeSide.Right);
}
public override bool WantsForwardedScrollEventsForAxis (NSEventGestureAxis axis)
{
return axis == NSEventGestureAxis.Horizontal && IsSwipeEnabled;
}
public override bool AcceptsFirstResponder ()
{
return AppDelegate.IsOnLionOrBetter;
}
void FireSwipeEvent (SwipeSide side)
{
var temp = SwipeEvent;
if (temp != null)
temp (this, new SwipeEventArgs { Side = side });
}
void FireOngoingSwipeEvent (SwipeSide status)
{
var temp = OngoingSwipeEvent;
if (temp != null)
temp (this, new SwipeEventArgs { Side = status });
}
public override void PerformFindPanelAction (NSObject sender)
{
if (!AppDelegate.IsOnLionOrBetter)
return;
var ctrl = sender as NSMenuItem;
if (ctrl == null)
return;
InternalPerformFinderAction ((NSTextFinderAction)(int)ctrl.Tag);
}
void InternalPerformFinderAction (NSTextFinderAction action)
{
switch (action) {
case NSTextFinderAction.ShowFindInterface:
if (currentScrollView != null)
currentScrollView.FindBarVisible = true;
findBarController.View.GrabFocus ();
break;
case NSTextFinderAction.HideFindInterface:
if (currentScrollView != null)
currentScrollView.FindBarVisible = false;
break;
case NSTextFinderAction.NextMatch:
case NSTextFinderAction.SetSearchString:
DoSearch (true);
break;
case NSTextFinderAction.PreviousMatch:
DoSearch (false);
break;
default:
break;
}
}
void SetupFindBar (NSScrollView scrollView)
{
currentScrollView = scrollView;
scrollView.FindBarView = findBarController.View;
scrollView.FindBarPosition = NSScrollViewFindBarPosition.BelowContent;
}
void DoSearch (bool forward)
{
var findBar = findBarController.View;
Search (findBar.FindText, forward, findBar.CaseSensitive, findBar.Wrap);
}
}
}
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