|
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using JetBrains.Annotations;
namespace Kaleida.ServiceMonitor.Model
{
public class ScriptWorkspace
{
private readonly IFilesystem filesystem;
[NotNull] private IScriptSource currentScript = new NullScriptSource();
private readonly List<IScriptSource> loadedScripts = new List<IScriptSource>();
public event EventHandler CurrentScriptChanged;
public event EventHandler CurrentScriptContentChanged;
public event EventHandler LoadedScriptListChanged;
public ScriptWorkspace() : this(new SystemFilesystem())
{
}
internal ScriptWorkspace(IFilesystem filesystem)
{
this.filesystem = filesystem;
}
public ReadOnlyCollection<IScriptSource> LoadedScripts
{
get { return loadedScripts.AsReadOnly(); }
}
[NotNull]
public IScriptSource CurrentScript
{
get { return currentScript; }
set
{
if (value == null) throw new ArgumentNullException("value");
if (!(value is NullScriptSource) && !loadedScripts.Contains(value))
throw new InvalidOperationException(string.Format("Cannot set current script to non-loaded script '{0}'", value.Name));
currentScript = value;
if (CurrentScriptChanged != null)
CurrentScriptChanged(this, EventArgs.Empty);
}
}
public void NewScript([NotNull] string path)
{
if (path == null) throw new ArgumentNullException("path");
const string contents = "// add operations here. e.g. \r\nhttp-get \"http://www.google.com\" must-contain \"I'm Feeling Lucky\"";
if (filesystem.FileExists(path))
throw new InvalidOperationException(string.Format("File '{0}' already exists", path));
var newScript = ScriptSource.New(path, contents);
AddScriptToInternalList(newScript);
CurrentScript = newScript;
}
public void UnloadAllScripts()
{
CurrentScript = new NullScriptSource();
foreach(var script in loadedScripts)
{
script.ScriptContentChanged -= ScriptContentChanged;
}
loadedScripts.Clear();
OnLoadedScriptListChanged();
}
public void LoadScript([NotNull] string path)
{
if (path == null) throw new ArgumentNullException("path");
var script = ScriptSource.Load(path, filesystem.ReadAllText(path));
AddScriptToInternalList(script);
CurrentScript = script;
}
public void SaveCurrentScript()
{
var script = currentScript;
if (script == null) throw new InvalidOperationException("Cannot save. No script selected");
script.Save(filesystem);
}
private void AddScriptToInternalList(ScriptSource newScript)
{
newScript.ScriptContentChanged += ScriptContentChanged;
loadedScripts.Add(newScript);
OnLoadedScriptListChanged();
}
private void ScriptContentChanged(object sender, EventArgs e)
{
if (sender == currentScript && CurrentScriptContentChanged != null)
CurrentScriptContentChanged(this, EventArgs.Empty);
}
private void OnLoadedScriptListChanged()
{
if (LoadedScriptListChanged != null)
LoadedScriptListChanged(this, EventArgs.Empty);
}
}
}
|
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
Stuart Wheelwright is the Principal Architect and Software Developer at
BlackJet Software Ltd.
He has over 16 years commercial experience producing robust, maintainable, web-based solutions and bespoke systems for Microsoft platforms.
His latest project is
Shopping UK, an elegantly simple shopping list for iPhone.