SpanWriter now has an argument that allows it to be resizable.
```cs
public SpanWriter(Span<byte> initialBuffer, bool resize = false)
public SpanWriter(int initialCapacity, bool resize = false)
```
If a SpanWriter is set to be resizable, or given an initial capacity instead of a buffer, it must be disposed:
```cs
public static void SomeMethod()
{
using var writer = new SpanWriter(stackalloc byte[512], true);
// stuff
// Automatic Dispose of writer
}
```
This is because the SpanWriter uses `ArrayPool<byte>.Shared` _rented buffers_ to resize. If the writer is not disposed, those buffers will never be reused resulting in a _memory leak_.
It is possible that the SpanWriter will outright ditch the initial buffer if resize is set to true and growing is needed. To check/account for that we can do the following:
```cs
public static void SomeMethod()
{
Span<byte> span = stackalloc byte[512];
using var writer = new SpanWriter(span, true);
// write some stuff that causes the span to grow
span = writer.RawBuffer;
// Do stuff with the span
}
```
Make sure you don't accidentally `Dispose()` the writer or use the `RawBuffer` outside of the `using` block. If you do, bad things will happen! (NullPointerException, or a fresh SpanWriter with no buffer, depending on the situation).
SpanWriter can also now be used with a fixed statement since it has a `PinnableReference()` function.
256 lines
9.1 KiB
C#
256 lines
9.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Reflection;
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using Server.Commands;
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using Server.Network;
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namespace Server.Gumps
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{
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public class SetTimeSpanGump : Gump
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{
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public static readonly bool OldStyle = PropsConfig.OldStyle;
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public static readonly int GumpOffsetX = PropsConfig.GumpOffsetX;
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public static readonly int GumpOffsetY = PropsConfig.GumpOffsetY;
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public static readonly int TextHue = PropsConfig.TextHue;
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public static readonly int TextOffsetX = PropsConfig.TextOffsetX;
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public static readonly int OffsetGumpID = PropsConfig.OffsetGumpID;
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public static readonly int HeaderGumpID = PropsConfig.HeaderGumpID;
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public static readonly int EntryGumpID = PropsConfig.EntryGumpID;
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public static readonly int BackGumpID = PropsConfig.BackGumpID;
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public static readonly int SetGumpID = PropsConfig.SetGumpID;
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public static readonly int SetWidth = PropsConfig.SetWidth;
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public static readonly int SetOffsetX = PropsConfig.SetOffsetX, SetOffsetY = PropsConfig.SetOffsetY;
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public static readonly int SetButtonID1 = PropsConfig.SetButtonID1;
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public static readonly int SetButtonID2 = PropsConfig.SetButtonID2;
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public static readonly int PrevWidth = PropsConfig.PrevWidth;
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public static readonly int PrevOffsetX = PropsConfig.PrevOffsetX, PrevOffsetY = PropsConfig.PrevOffsetY;
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public static readonly int PrevButtonID1 = PropsConfig.PrevButtonID1;
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public static readonly int PrevButtonID2 = PropsConfig.PrevButtonID2;
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public static readonly int NextWidth = PropsConfig.NextWidth;
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public static readonly int NextOffsetX = PropsConfig.NextOffsetX, NextOffsetY = PropsConfig.NextOffsetY;
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public static readonly int NextButtonID1 = PropsConfig.NextButtonID1;
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public static readonly int NextButtonID2 = PropsConfig.NextButtonID2;
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public static readonly int OffsetSize = PropsConfig.OffsetSize;
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public static readonly int EntryHeight = PropsConfig.EntryHeight;
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public static readonly int BorderSize = PropsConfig.BorderSize;
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private static readonly int EntryWidth = 212;
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private static readonly int TotalWidth = OffsetSize + EntryWidth + OffsetSize + SetWidth + OffsetSize;
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private static readonly int TotalHeight = OffsetSize + 7 * (EntryHeight + OffsetSize);
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private static readonly int BackWidth = BorderSize + TotalWidth + BorderSize;
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private static readonly int BackHeight = BorderSize + TotalHeight + BorderSize;
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private readonly List<object> m_List;
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private readonly Mobile m_Mobile;
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private readonly object m_Object;
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private readonly int m_Page;
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private readonly PropertyInfo m_Property;
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private readonly Stack<StackEntry> m_Stack;
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public SetTimeSpanGump(
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PropertyInfo prop, Mobile mobile, object o, Stack<StackEntry> stack, int page, List<object> list
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)
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: base(GumpOffsetX, GumpOffsetY)
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{
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m_Property = prop;
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m_Mobile = mobile;
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m_Object = o;
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m_Stack = stack;
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m_Page = page;
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m_List = list;
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var ts = (TimeSpan)(prop?.GetValue(o, null) ?? new TimeSpan());
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AddPage(0);
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AddBackground(0, 0, BackWidth, BackHeight, BackGumpID);
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AddImageTiled(
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BorderSize,
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BorderSize,
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TotalWidth - (OldStyle ? SetWidth + OffsetSize : 0),
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TotalHeight,
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OffsetGumpID
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);
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AddRect(0, prop?.Name, 0, -1);
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AddRect(1, ts.ToString(), 0, -1);
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AddRect(2, "Zero", 1, -1);
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AddRect(3, "From H:M:S", 2, -1);
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AddRect(4, "H:", 3, 0);
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AddRect(5, "M:", 4, 1);
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AddRect(6, "S:", 5, 2);
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}
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private void AddRect(int index, string str, int button, int text)
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{
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var x = BorderSize + OffsetSize;
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var y = BorderSize + OffsetSize + index * (EntryHeight + OffsetSize);
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AddImageTiled(x, y, EntryWidth, EntryHeight, EntryGumpID);
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AddLabelCropped(x + TextOffsetX, y, EntryWidth - TextOffsetX, EntryHeight, TextHue, str);
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if (text != -1)
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{
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AddTextEntry(x + 16 + TextOffsetX, y, EntryWidth - TextOffsetX - 16, EntryHeight, TextHue, text, "");
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}
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x += EntryWidth + OffsetSize;
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if (SetGumpID != 0)
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{
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AddImageTiled(x, y, SetWidth, EntryHeight, SetGumpID);
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}
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if (button != 0)
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{
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AddButton(x + SetOffsetX, y + SetOffsetY, SetButtonID1, SetButtonID2, button);
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}
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}
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public override void OnResponse(NetState sender, RelayInfo info)
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{
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TimeSpan toSet;
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bool shouldSet, shouldSend;
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var h = info.GetTextEntry(0);
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var m = info.GetTextEntry(1);
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var s = info.GetTextEntry(2);
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switch (info.ButtonID)
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{
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case 1: // Zero
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{
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toSet = TimeSpan.Zero;
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shouldSet = true;
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shouldSend = true;
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break;
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}
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case 2: // From H:M:S
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{
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var successfulParse = false;
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if (h != null && m != null && s != null)
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{
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successfulParse = TimeSpan.TryParse($"{h.Text}:{m.Text}:{s.Text}", out toSet);
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}
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else
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{
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toSet = TimeSpan.Zero;
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}
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shouldSet = shouldSend = successfulParse;
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break;
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}
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case 3: // From H
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{
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if (h != null)
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{
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try
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{
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toSet = TimeSpan.FromHours(Utility.ToDouble(h.Text));
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shouldSet = true;
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shouldSend = true;
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break;
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}
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catch
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{
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// ignored
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}
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}
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toSet = TimeSpan.Zero;
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shouldSet = false;
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shouldSend = false;
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break;
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}
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case 4: // From M
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{
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if (m != null)
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{
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try
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{
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toSet = TimeSpan.FromMinutes(Utility.ToDouble(m.Text));
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shouldSet = true;
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shouldSend = true;
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break;
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}
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catch
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{
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// ignored
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}
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}
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toSet = TimeSpan.Zero;
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shouldSet = false;
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shouldSend = false;
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break;
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}
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case 5: // From S
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{
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if (s != null)
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{
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try
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{
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toSet = TimeSpan.FromSeconds(Utility.ToDouble(s.Text));
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shouldSet = true;
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shouldSend = true;
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break;
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}
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catch
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{
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// ignored
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}
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}
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toSet = TimeSpan.Zero;
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shouldSet = false;
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shouldSend = false;
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break;
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}
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default:
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{
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toSet = TimeSpan.Zero;
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shouldSet = false;
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shouldSend = true;
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break;
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}
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}
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if (shouldSet)
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{
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try
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{
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CommandLogging.LogChangeProperty(m_Mobile, m_Object, m_Property.Name, toSet.ToString());
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m_Property.SetValue(m_Object, toSet, null);
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PropertiesGump.OnValueChanged(m_Object, m_Property, m_Stack);
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}
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catch
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{
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m_Mobile.SendMessage("An exception was caught. The property may not have changed.");
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}
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}
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if (shouldSend)
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{
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m_Mobile.SendGump(new PropertiesGump(m_Mobile, m_Object, m_Stack, m_List, m_Page));
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}
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}
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}
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}
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