private void SearchVolumeAsync(ISearchCriteria criteria, System.Action onsearchcompled)
{
// delegate that will be called
// when asynchronous volume searching has been finished.
AsyncCallback cb = (IAsyncResult ar) => {
if (windowDeleted)
{
return;
}
try {
Volume[] volumes = database.EndSearchVolume(ar);
Application.Invoke(delegate {
tvVolumes.Fill(volumes);
SetStatus(string.Empty);
// remember last successful searchcriteria
// (that has been used to successfully fill the treeview).
// (set in gtk thread to avoid race conditions.)
lastSuccessfulSearchCriteria = (ISearchCriteria)ar.AsyncState;
});
} catch (Exception e) {
if (e is TimeoutException)
{
// couldn't get connection lock
Application.Invoke(delegate {
SetStatus(S._("Timeout: another search is probably still in progress."));
});
}
else
{
Application.Invoke(delegate {
//SetStatus(Util.FormatExceptionMsg(e));
SetStatus(string.Empty);
});
throw;
}
} finally {
if (onsearchcompled != null)
{
onsearchcompled();
}
}
};
try {
SetStatus(S._("Searching..."));
if (criteria != null)
{
database.BeginSearchVolume(criteria, cb, criteria);
}
else
{
database.BeginSearchVolume(cb, null);
}
} catch (Exception) {
SetStatus(string.Empty);
throw;
}
}
private void OpenDB(string path, bool createNew, bool loadAsync, System.Action onsuccess)
{
EnableGui(false); // will be re-enabled after opening AND loading has been completed successfully
SetWindowTitle(null);
// clear views
tvVolumes.Clear();
tvItems.Clear();
itemInfo.Clear();
itemInfo.Hide();
if (database != null)
database.Close();
lastSuccessfulSearchCriteria = null;
try {
database = new VolumeDatabase(path, createNew);
database.SearchItemResultsLimit = App.SEARCH_RESULTS_LIMIT;
} catch (UnsupportedDbVersionException) {
MsgDialog.ShowError(this,
S._("Unsupported database version"),
S._("This database version is not supported."));
return;
}
// load volumes
Action<Volume[]> updateGui = (Volume[] volumes) => {
tvVolumes.Fill(volumes);
// select first volume
/*
// this clearly harms startup time.
TreeIter iter;
if (tvVolumes.Model.GetIterFirst(out iter))
tvVolumes.Selection.SelectIter(iter);
*/
EnableGui(true);
SetWindowTitle(path);
SetTempStatus(string.Format(S._("{0} volumes loaded."), volumes.Length));
recentManager.AddFull("file://" + path, recentData);
App.Settings.MostRecentDBPath = path;
App.Settings.Save();
if (onsuccess != null)
onsuccess(); // must be called on the gui thread
};
if (loadAsync) {
// delegate that will be called
// when asynchronous volume loading (searching) has been finished.
AsyncCallback cb = (IAsyncResult ar) => {
Volume[] volumes;
try {
volumes = database.EndSearchVolume(ar);
} catch (Exception ex) {
Application.Invoke(delegate {
SetStatus(string.Format(S._("An error occured while loading the volume list: {0}"),
ex.Message));
});
return;
}
Application.Invoke(delegate {
updateGui(volumes);
});
};
database.BeginSearchVolume(cb, null); // returns immediately
} else {
Volume[] volumes = database.SearchVolume();
updateGui(volumes);
}
}
private void OpenDB(string path, bool createNew, bool loadAsync, System.Action onsuccess)
{
EnableGui(false); // will be re-enabled after opening AND loading has been completed successfully
SetWindowTitle(null);
// clear views
tvVolumes.Clear();
tvItems.Clear();
itemInfo.Clear();
itemInfo.Hide();
if (database != null)
{
database.Close();
}
lastSuccessfulSearchCriteria = null;
try {
database = new VolumeDatabase(path, createNew);
database.SearchItemResultsLimit = App.SEARCH_RESULTS_LIMIT;
} catch (UnsupportedDbVersionException) {
MsgDialog.ShowError(this,
S._("Unsupported database version"),
S._("This database version is not supported."));
return;
}
// load volumes
Action <Volume[]> updateGui = (Volume[] volumes) => {
tvVolumes.Fill(volumes);
// select first volume
/*
* // this clearly harms startup time.
* TreeIter iter;
* if (tvVolumes.Model.GetIterFirst(out iter))
* tvVolumes.Selection.SelectIter(iter);
*/
EnableGui(true);
SetWindowTitle(path);
SetTempStatus(string.Format(S._("{0} volumes loaded."), volumes.Length));
recentManager.AddFull("file://" + path, recentData);
App.Settings.MostRecentDBPath = path;
App.Settings.Save();
if (onsuccess != null)
{
onsuccess(); // must be called on the gui thread
}
};
if (loadAsync)
{
// delegate that will be called
// when asynchronous volume loading (searching) has been finished.
AsyncCallback cb = (IAsyncResult ar) => {
Volume[] volumes;
try {
volumes = database.EndSearchVolume(ar);
} catch (Exception ex) {
Application.Invoke(delegate {
SetStatus(string.Format(S._("An error occured while loading the volume list: {0}"),
ex.Message));
});
return;
}
Application.Invoke(delegate {
updateGui(volumes);
});
};
database.BeginSearchVolume(cb, null); // returns immediately
}
else
{
Volume[] volumes = database.SearchVolume();
updateGui(volumes);
}
}