/// <summary>
/// Save the specified document as a new file, allowing the user to specify the new filepath.
/// </summary>
public void SaveFileAs(TextFileDocumentViewModel document)
{
string newFilePath = null;
if (DialogProvider.UserSelectsNewFilePath(document.FilePath, out newFilePath))
{
SaveFile(document, newFilePath);
}
}
/// <summary>
/// Save the specified document, allowing the user to select a filename for new files.
/// </summary>
public void SaveFile(TextFileDocumentViewModel document)
{
if (string.IsNullOrEmpty(document.FilePath))
{
SaveFileAs(document);
}
else
{
SaveFile(document, document.FilePath);
}
}
/// <summary>
/// Open a file, create a view-model and it to the collection of document view-models.
/// </summary>
public void OpenFile(string filePath)
{
try
{
var fileContent = File.ReadAllText(filePath);
var newDocumentViewModel = new TextFileDocumentViewModel(filePath, fileContent, false);
this.Documents.Add(newDocumentViewModel);
}
catch (Exception ex)
{
DialogProvider.ErrorMessage("Failed to open document " + filePath + "\n" +
"Exception occurred:\n" +
ex.ToString());
}
}
/// <summary>
/// Determine if the file can be closed.
/// If the file is modified, but not saved, the user is asked
/// to confirm that the document should be closed.
/// </summary>
public bool QueryCanCloseFile(TextFileDocumentViewModel document)
{
if (document.IsModified)
{
//
// Ask the user to confirm closing a modified document.
//
if (!this.DialogProvider.QueryCloseModifiedDocument(document))
{
// User doesn't want to close it.
return(false);
}
}
return(true);
}
/// <summary>
/// Save the specified document to the specified filepath.
/// </summary>
public void SaveFile(TextFileDocumentViewModel document, string newFilePath)
{
try
{
File.WriteAllText(newFilePath, document.Text);
document.FilePath = newFilePath;
document.IsModified = false;
}
catch (Exception ex)
{
DialogProvider.ErrorMessage("Failed to save document " + newFilePath + "\n" +
"Exception occurred: \n" +
ex.ToString());
}
}
/// <summary>
/// Close the specified document.
/// Returns 'true' if the user allowed the file to be closed,
/// or 'false' if the user canceled closing of the file.
/// </summary>
public bool CloseFile(TextFileDocumentViewModel document)
{
if (!QueryCanCloseFile(document))
{
//
// User has chosen not to close the file.
//
return(false);
}
this.Documents.Remove(document);
//
// File has been closed.
//
return(true);
}
/// <summary>
/// Close the specified document.
/// Returns 'true' if the user allowed the file to be closed,
/// or 'false' if the user canceled closing of the file.
/// </summary>
public bool CloseFile(TextFileDocumentViewModel document)
{
if (!QueryCanCloseFile(document))
{
//
// User has chosen not to close the file.
//
return false;
}
this.Documents.Remove(document);
//
// File has been closed.
//
return true;
}
/// <summary>
/// Determine if the file can be closed.
/// If the file is modified, but not saved, the user is asked
/// to confirm that the document should be closed.
/// </summary>
public bool QueryCanCloseFile(TextFileDocumentViewModel document)
{
if (document.IsModified)
{
//
// Ask the user to confirm closing a modified document.
//
if (!this.DialogProvider.QueryCloseModifiedDocument(document))
{
// User doesn't want to close it.
return false;
}
}
return true;
}
/// <summary>
/// Save the specified document as a new file, allowing the user to specify the new filepath.
/// </summary>
public void SaveFileAs(TextFileDocumentViewModel document)
{
string newFilePath = null;
if (DialogProvider.UserSelectsNewFilePath(document.FilePath, out newFilePath))
{
SaveFile(document, newFilePath);
}
}
/// <summary>
/// Save the specified document to the specified filepath.
/// </summary>
public void SaveFile(TextFileDocumentViewModel document, string newFilePath)
{
try
{
File.WriteAllText(newFilePath, document.Text);
document.FilePath = newFilePath;
document.IsModified = false;
}
catch (Exception ex)
{
DialogProvider.ErrorMessage("Failed to save document " + newFilePath + "\n" +
"Exception occurred: \n" +
ex.ToString());
}
}
/// <summary>
/// Save the specified document, allowing the user to select a filename for new files.
/// </summary>
public void SaveFile(TextFileDocumentViewModel document)
{
if (string.IsNullOrEmpty(document.FilePath))
{
SaveFileAs(document);
}
else
{
SaveFile(document, document.FilePath);
}
}
/// <summary>
/// Open a file, create a view-model and it to the collection of document view-models.
/// </summary>
public void OpenFile(string filePath)
{
try
{
var fileContent = File.ReadAllText(filePath);
var newDocumentViewModel = new TextFileDocumentViewModel(filePath, fileContent, false);
this.Documents.Add(newDocumentViewModel);
}
catch (Exception ex)
{
DialogProvider.ErrorMessage("Failed to open document " + filePath + "\n" +
"Exception occurred:\n" +
ex.ToString());
}
}
/// <summary>
/// Create a new file and add it to the view-model.
/// </summary>
public void NewFile()
{
var newDocument = new TextFileDocumentViewModel(string.Empty, string.Empty, false);
this.Documents.Add(newDocument);
}
/// <summary>
/// Create a new file and add it to the view-model.
/// </summary>
public void NewFile()
{
var newDocument = new TextFileDocumentViewModel(string.Empty, string.Empty, false);
this.Documents.Add(newDocument);
}
/// <summary>
/// Allow the user to confirm whether they want to close a modified document.
/// </summary>
public bool QueryCloseModifiedDocument(TextFileDocumentViewModel document)
{
string msg = document.FileName + " has been modified but not saved.\n" +
"Do you really want to close it?";
var result = MessageBox.Show(this, msg, "File modified but not saved", MessageBoxButton.YesNo, MessageBoxImage.Warning);
return result == MessageBoxResult.Yes;
}