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Add text pointer content to tool.

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Benjamin Popp
2019-05-27 14:01:09 -05:00
parent 3e00051cb5
commit 76df0b7bb0
4 changed files with 76 additions and 0 deletions
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45
src/HexManiac.Core/ViewModels/Tools/IArrayElementViewModel.cs
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@@ -215,4 +215,49 @@ namespace HavenSoft.HexManiac.Core.ViewModels.Tools {
}
}
}
public class TextStreamArrayElementViewModel : ViewModelCore, IArrayElementViewModel {
private readonly ChangeHistory<ModelDelta> history;
private readonly IDataModel model;
private readonly string name;
private readonly int start;
public bool IsInError => !string.IsNullOrEmpty(ErrorText);
public string ErrorText { get; private set; }
public event EventHandler DataChanged;
public event EventHandler<(int originalStart, int newStart)> DataMoved;
string content;
public string Content {
get => content;
set {
if (TryUpdate(ref content, value)) {
var destination = model.ReadPointer(start);
var run = model.GetNextRun(destination);
var data = PCSString.Convert(content);
var newRun = model.RelocateForExpansion(history.CurrentChange, run, data.Count);
if (run.Start != newRun.Start) DataMoved?.Invoke(this, (run.Start, newRun.Start));
run = newRun;
for (int i = 0; i < data.Count; i++) history.CurrentChange.ChangeData(model, run.Start + i, data[i]);
for (int i = data.Count; i < run.Length; i++) history.CurrentChange.ChangeData(model, run.Start + i, 0xFF);
DataChanged?.Invoke(this, EventArgs.Empty);
model.ObserveRunWritten(history.CurrentChange, new PCSRun(run.Start, data.Count));
}
}
}
public TextStreamArrayElementViewModel(ChangeHistory<ModelDelta> history, IDataModel model, string name, int start) {
this.history = history;
this.model = model;
this.name = name;
this.start = start;
var destination = model.ReadPointer(start);
// by the time we get this far, we're guaranteed that this will be a PCSRun.
// if it's not a PCSRun, we shouldn't have asked to construct this object.
var run = (PCSRun)model.GetNextRun(destination);
content = PCSString.Convert(model, run.Start, run.Length);
}
}
}