/// <summary>
/// Stop observing when the file is updated on disk.
/// </summary>
/// <param name="fileName">File to stop observing.</param>
internal void StopObservingItem(string fileName)
{
#region Input validation
if (String.IsNullOrEmpty(fileName))
{
throw new ArgumentException(SR.GetString(SR.InvalidParameter, CultureInfo.CurrentUICulture), "fileName");
}
#endregion
string fullFileName = Utilities.CanonicalizeFileName(fileName);
if (this.observedItems.ContainsKey(fullFileName))
{
// Get the cookie that was used for this.observedItems to this file.
ObservedItemInfo itemInfo = this.observedItems[fullFileName];
// Remove the file from our observed list. It's important that this is done before the call to
// UnadviseFileChange, because for some reason, the call to UnadviseFileChange can trigger a
// FilesChanged event, and we want to be able to filter that event away.
this.observedItems.Remove(fullFileName);
// Stop observing the file
ErrorHandler.ThrowOnFailure(this.fileChangeService.UnadviseFileChange(itemInfo.FileChangeCookie));
}
}
/// <summary>
/// Observe when the given file is updated on disk.
/// </summary>
/// <param name="fileName">File to observe.</param>
/// <param name="id">The item id of the item to observe.</param>
internal void ObserveItem(string fileName, uint id)
{
#region Input validation
if (String.IsNullOrEmpty(fileName))
{
throw new ArgumentException(SR.GetString(SR.InvalidParameter), "fileName");
}
if (id == VSConstants.VSITEMID_NIL)
{
throw new ArgumentException(SR.GetString(SR.InvalidParameter), "id");
}
#endregion
string fullFileName = Utilities.CanonicalizeFileName(fileName);
if (!this.observedItems.ContainsKey(fullFileName))
{
// Observe changes to the file
uint fileChangeCookie;
ErrorHandler.ThrowOnFailure(this.fileChangeService.AdviseFileChange(fullFileName, (uint)_VSFILECHANGEFLAGS.VSFILECHG_Time, this, out fileChangeCookie));
ObservedItemInfo itemInfo = new ObservedItemInfo();
itemInfo.ItemID = id;
itemInfo.FileChangeCookie = fileChangeCookie;
// Remember that we're observing this file (used in FilesChanged event handler)
this.observedItems.Add(fullFileName, itemInfo);
}
}
/// <summary>
/// Ignore item file changes for the specified item.
/// </summary>
/// <param name="fileName">File to ignore observing.</param>
/// <param name="ignore">Flag indicating whether or not to ignore changes (1 to ignore, 0 to stop ignoring).</param>
internal void IgnoreItemChanges(string fileName, bool ignore)
{
#region Input validation
if (String.IsNullOrEmpty(fileName))
{
throw new ArgumentException(SR.GetString(SR.InvalidParameter, CultureInfo.CurrentUICulture), "fileName");
}
#endregion
string fullFileName = Utilities.CanonicalizeFileName(fileName);
if (this.observedItems.ContainsKey(fullFileName))
{
// Call ignore file with the flags specified.
ErrorHandler.ThrowOnFailure(this.fileChangeService.IgnoreFile(0, fileName, ignore ? 1 : 0));
}
}
/// <summary>
/// Called when one of the file have changed on disk.
/// </summary>
/// <param name="numberOfFilesChanged">Number of files changed.</param>
/// <param name="filesChanged">Array of file names.</param>
/// <param name="flags">Array of flags indicating the type of changes. See _VSFILECHANGEFLAGS.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsFileChangeEvents.FilesChanged(uint numberOfFilesChanged, string[] filesChanged, uint[] flags)
{
if (this.FileChangedOnDisk != null)
{
for (int i = 0; i < numberOfFilesChanged; i++)
{
string fullFileName = Utilities.CanonicalizeFileName(filesChanged[i]);
if (this.observedItems.ContainsKey(fullFileName))
{
ObservedItemInfo info = this.observedItems[fullFileName];
this.FileChangedOnDisk(this, new FileChangedOnDiskEventArgs(fullFileName, info.ItemID, (_VSFILECHANGEFLAGS)flags[i]));
}
}
}
return(VSConstants.S_OK);
}
