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using System;
using System.Collections.Generic;
using AppKit;
using CoreGraphics;
using Foundation;
namespace Xamarin.PropertyEditing.Mac
{
internal class SmallButton : NSButton
{
private NSView previousKeyView;
public override NSView PreviousKeyView => this.previousKeyView ?? base.PreviousKeyView;
internal void SetPreviousKeyView (NSView view)
{
this.previousKeyView = view;
}
public SmallButton ()
{
BezelStyle = NSBezelStyle.RegularSquare;
ControlSize = NSControlSize.Small;
Bordered = false;
TranslatesAutoresizingMaskIntoConstraints = false;
Cell.HighlightsBy = (int)NSCellStyleMask.ContentsCell;
}
}
internal class TextFieldSmallButtonContainer : PropertyTextField
{
private readonly NSObject[] objects = new NSObject[0];
public override NSObject[] AccessibilityChildren => this.objects;
private readonly List<SmallButton> buttons = new List<SmallButton> ();
private readonly ButtonTextFieldCell cell;
private NSView lastView;
public override bool Editable {
get => base.Editable;
set {
base.Editable = value;
foreach (SmallButton item in this.buttons) {
item.Enabled = value;
}
}
}
public TextFieldSmallButtonContainer ()
{
Cell = this.cell = new ButtonTextFieldCell (this) {
Bezeled = true,
BezelStyle = NSTextFieldBezelStyle.Square,
ControlSize = NSControlSize.Regular,
Editable = true,
};
TranslatesAutoresizingMaskIntoConstraints = false;
this.lastView = this;
}
public override bool AllowsVibrancy => false;
public override void DrawRect (CGRect dirtyRect)
{
// There appears to be a bug in AppKit in light theme when NSTextField is a subview
// of a layer-backed view, the background of the field does not get properly redrawn
// becase the dirtyRect is seemingly invalid. Fix this by redrawing the entire control.
// https://www.cocoanetics.com/2013/01/radar-nstextfield-redrawing-of-background-with-layer-backing/
// http://www.openradar.me/radar?id=2552401
base.DrawRect (Bounds);
}
public int ButtonSize { get; set; } = 16;
public int ButtonRightBorder { get; set; } = 3;
public int ButtonSeparation { get; set; } = 1;
public void AddButton (SmallButton button)
{
AddSubview (button);
var separation = this.buttons.Count == 0 ? ButtonRightBorder : (ButtonSeparation + ButtonSize);
AddConstraints (new[] {
NSLayoutConstraint.Create (button, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal, lastView, NSLayoutAttribute.CenterY, 1f, 0),
NSLayoutConstraint.Create (button, NSLayoutAttribute.Width, NSLayoutRelation.Equal, 1f, ButtonSize),
NSLayoutConstraint.Create (button, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, ButtonSize),
NSLayoutConstraint.Create (button, NSLayoutAttribute.Right, NSLayoutRelation.Equal, lastView, NSLayoutAttribute.Right, 1f, -separation),
});
this.buttons.Add (button);
this.lastView = this.buttons[this.buttons.Count - 1];
//preview keyview calculation
button.SetPreviousKeyView (this);
if (this.buttons.Count > 1) {
for (var i = this.buttons.Count - 2; i >= 0; i--) {
this.buttons[i].SetPreviousKeyView (this.buttons[i + 1]);
}
}
}
private sealed class ButtonTextFieldCell : PropertyTextFieldCell
{
private readonly TextFieldSmallButtonContainer field;
public ButtonTextFieldCell (TextFieldSmallButtonContainer field)
{
this.field = field;
}
public override void DrawInteriorWithFrame (CGRect cellFrame, NSView inView)
{
base.DrawInteriorWithFrame (DrawingRectForBounds (cellFrame), inView);
}
public override void EditWithFrame (CGRect aRect, NSView inView, NSText editor, NSObject delegateObject, NSEvent theEvent)
{
base.EditWithFrame (DrawingRectForBounds (aRect), inView, editor, delegateObject, theEvent);
}
public override void SelectWithFrame (CGRect aRect, NSView inView, NSText editor, NSObject delegateObject, nint selStart, nint selLength)
{
base.SelectWithFrame (DrawingRectForBounds (aRect), inView, editor, delegateObject, selStart, selLength);
}
public override void ResetCursorRect (CGRect cellFrame, NSView inView)
{
base.ResetCursorRect (DrawingRectForBounds (cellFrame), inView);
}
public override CGRect DrawingRectForBounds (CGRect theRect)
{
CGRect baseRect = base.DrawingRectForBounds (theRect);
if (this.field.buttons.Count != 0) {
baseRect.Y -= 2;
baseRect.Width -= this.field.ButtonSize;
baseRect.Height = PropertyEditorControl.DefaultControlHeight;
}
return baseRect;
}
}
}
}
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