/// <summary>
/// Initializes a new diagram editor.
/// </summary>
/// <param name="diagram">The diagram being edited</param>
/// <param name="codeEditor">The code editor</param>
/// <param name="notifications">Creates objects that report progress</param>
/// <param name="diagramRenderers">Responsible for converting diagram data to images</param>
/// <param name="diagramIO">Saves diagrams</param>
/// <param name="compiler">Compiles diagrams</param>
/// <param name="autoSaveTimer">Determines how soon after a change a diagram will be autosaved</param>
/// <param name="refreshTimer">Determines how long after the last code modification was made to automatically refresh a diagram's image</param>
/// <param name="uiScheduler">A task scheduler for executing UI tasks</param>
public DiagramEditorViewModel(Diagram diagram, ICodeEditor codeEditor, INotifications notifications,
IIndex <ImageFormat, IDiagramRenderer> diagramRenderers, IDiagramIOService diagramIO, IDiagramCompiler compiler,
ITimer autoSaveTimer, ITimer refreshTimer, TaskScheduler uiScheduler)
{
_diagram = Property.New(this, p => p.Diagram, OnPropertyChanged);
Diagram = diagram;
_notifications = notifications;
_diagramRenderers = diagramRenderers;
_diagramIO = diagramIO;
_compiler = compiler;
_autoSaveTimer = autoSaveTimer;
_refreshTimer = refreshTimer;
_uiScheduler = uiScheduler;
CodeEditor = codeEditor;
CodeEditor.Content = Diagram.Content;
CodeEditor.PropertyChanged += codeEditor_PropertyChanged; // Subscribe after setting the content the first time.
_imageFormat = Property.New(this, p => p.ImageFormat, OnPropertyChanged);
ImageFormat = Diagram.ImageFormat;
_diagramImage = Property.New(this, p => p.DiagramImage, OnPropertyChanged);
_isIdle = Property.New(this, p => p.IsIdle, OnPropertyChanged)
.AlsoChanges(p => p.CanSave)
.AlsoChanges(p => p.CanRefresh)
.AlsoChanges(p => p.CanClose);
IsIdle = true;
_autoSave = Property.New(this, p => p.AutoSave, OnPropertyChanged);
_autoSaveInterval = Property.New(this, p => p.AutoSaveInterval, OnPropertyChanged);
_saveCommand = Command.For(this).DependsOn(p => p.CanSave).Asynchronously().Executes(SaveAsync);
_refreshCommand = Command.For(this).DependsOn(p => p.CanRefresh).Asynchronously().Executes(RefreshAsync);
_closeCommand = Command.For(this).DependsOn(p => p.CanClose).Executes(Close);
// The document has been opened first time. So, any changes
// made to the document will require creating a backup.
_firstSaveAfterOpen = true;
_autoSaveTimer.Elapsed += autoSaveTimerElapsed;
_refreshTimer.Elapsed += refreshTimer_Elapsed;
}
/// <summary>
/// Initializes a new diagram editor.
/// </summary>
/// <param name="diagram">The diagram being edited</param>
/// <param name="codeEditor">The code editor</param>
/// <param name="notifications">Creates objects that report progress</param>
/// <param name="diagramRenderers">Responsible for converting diagram data to images</param>
/// <param name="diagramIO">Saves diagrams</param>
/// <param name="compiler">Compiles diagrams</param>
/// <param name="autoSaveTimer">Determines how soon after a change a diagram will be autosaved</param>
/// <param name="refreshTimer">Determines how long after the last code modification was made to automatically refresh a diagram's image</param>
/// <param name="uiScheduler">A task scheduler for executing UI tasks</param>
public DiagramEditorViewModel(Diagram diagram,
ICodeEditor codeEditor,
INotifications notifications,
IReadOnlyDictionary <ImageFormat, IDiagramRenderer> diagramRenderers,
IDiagramIOService diagramIO,
IDiagramCompiler compiler,
ITimer autoSaveTimer,
ITimer refreshTimer,
TaskScheduler uiScheduler) : this()
{
Diagram = diagram;
_notifications = notifications;
_diagramRenderers = diagramRenderers;
_diagramIO = diagramIO;
_compiler = compiler;
_autoSaveTimer = autoSaveTimer;
_refreshTimer = refreshTimer;
_uiScheduler = uiScheduler;
CodeEditor = codeEditor;
CodeEditor.Content = Diagram.Content;
CodeEditor.PropertyChanged += codeEditor_PropertyChanged; // Subscribe after setting the content the first time.
ImageFormat = Diagram.ImageFormat;
IsIdle = true;
Errors = new List <DiagramErrorViewModel>(0);
// The document has been opened first time. So, any changes
// made to the document will require creating a backup.
_firstSaveAfterOpen = true;
_autoSaveTimer.Elapsed += AutoSaveTimerElapsed;
_refreshTimer.Elapsed += RefreshTimerElapsed;
}