public ServerMessageRefresh(Model.FoldersRow folder, bool positive)
: base("DoRefresh")
{
lock (folder.activities)
{
DateTime d = DateTime.Now;
date = d.ToShortDateString();
time = d.ToLongTimeString();
root = folder.Path;
name = folder.Name;
// <path, most significant activity>
Dictionary <string, Model.Activity> ops = new Dictionary <string, Model.Activity>();
while (folder.activities.Count > 0)
{
Model.Activity activity = folder.activities.Dequeue();
string sourcePath = activity.path1;
string destPath = activity.type == Model.ActivityType.Renamed ? activity.path2 : activity.path1;
// here is quite difficult logic to explain
// I try to track and accumulate file change events and keep most significant information about what happened to files
//
// for example Microsoft Visual Studio 200 does this during file save (CTRL+S):
// 1) saves file into temporary file (I get 'created' event and possibly many 'changed' events)
// 2) deletes old file
// 3) renames temporary file to the original name (location)
// I need here to track renames and keep up-to-date location
// I also keep most significant event: (deleted|created)>renamed>changed
// if there was delete and create in row, I then change the event type to 'Changed'
Model.Activity lastActivity = null;
if (ops.ContainsKey(sourcePath))
{
lastActivity = ops[sourcePath];
}
if (ops.ContainsKey(destPath))
{
lastActivity = ops[destPath];
}
if (lastActivity != null)
{
// nonsense of modifying deleted file ? stay on deleted message
if (lastActivity.type == Model.ActivityType.Deleted && activity.type == Model.ActivityType.Changed)
{
activity = lastActivity;
}
// some apps may delete file and then recreate it, instead of changing it's content
if (lastActivity.type == Model.ActivityType.Deleted && (activity.type == Model.ActivityType.Renamed || activity.type == Model.ActivityType.Created))
{
activity.type = Model.ActivityType.Changed;
activity.path1 = destPath;
activity.path2 = "";
}
// creation is more significant than modification and renaming
if (lastActivity.type == Model.ActivityType.Created && (activity.type == Model.ActivityType.Renamed || activity.type == Model.ActivityType.Changed))
{
activity = lastActivity;
}
// renaming is more significant to modification
if (lastActivity.type == Model.ActivityType.Renamed && activity.type == Model.ActivityType.Changed)
{
activity = lastActivity;
}
// purge last activity
activity.passed = activity.passed || lastActivity.passed;
if (ops.ContainsKey(sourcePath))
{
ops.Remove(sourcePath);
}
if (ops.ContainsKey(destPath))
{
ops.Remove(destPath);
}
}
// store new activity
ops.Add(destPath, activity);
}
int passedCount = 0;
foreach (Model.Activity activity in ops.Values)
{
if (activity.passed)
{
passedCount++;
}
}
files = new File[passedCount];
int i = 0;
foreach (Model.Activity activity in ops.Values)
{
if (activity.passed)
{
files[i] = new File(root, activity);
try // file reading may throw, because someone deletes the file or something, so we should be safe here
{
if (activity.path1.EndsWith(".css"))
{
TextReader tr = new StreamReader(root + "\\" + files[i].path1);
string content = tr.ReadToEnd();
tr.Close();
string key = files[i].path1;
contents[key] = content;
}
}
catch (Exception)
{
}
i++;
}
}
}
}
public File(string root, Model.Activity activity)
{
action = activity.type.ToString().ToLower();
path1 = RelativePath(activity.path1, root);
path2 = RelativePath(activity.path2, root);
}