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71 lines
1.9 KiB
C#
71 lines
1.9 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace CodeWalker.WinForms
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{
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public partial class ReadOnlyPropertyGrid : PropertyGridFix
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{
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public ReadOnlyPropertyGrid()
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{
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InitializeComponent();
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}
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protected override void OnPaint(PaintEventArgs pe)
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{
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base.OnPaint(pe);
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}
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private bool _readOnly = true;
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public bool ReadOnly
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{
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get { return _readOnly; }
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set
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{
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_readOnly = value;
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SetObjectAsReadOnly(SelectedObject, _readOnly);
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}
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}
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private TypeDescriptionProvider provider = null;
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private object providedObject = null;
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protected override void OnSelectedObjectsChanged(EventArgs e)
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{
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if (providedObject != null)
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{
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SetObjectAsReadOnly(providedObject, false);
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}
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SetObjectAsReadOnly(SelectedObject, _readOnly);
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base.OnSelectedObjectsChanged(e);
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}
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private void SetObjectAsReadOnly(object selectedObject, bool isReadOnly)
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{
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if (SelectedObject != null)
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{
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if (isReadOnly)
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{
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provider = TypeDescriptor.AddAttributes(SelectedObject, new Attribute[] { new ReadOnlyAttribute(_readOnly) });
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providedObject = SelectedObject;
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}
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else if (provider != null)
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{
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TypeDescriptor.RemoveProvider(provider, this.SelectedObject);
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provider = null;
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providedObject = null;
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}
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Refresh();
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}
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}
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}
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}
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