public AllTagsDialog(
IChangeNotification changeNotification,
IDialogViewModel viewModel,
IEnumerable <string> availableTags,
string initiallyFocusedTag
)
{
this.viewModel = viewModel;
InitializeComponent();
checkedListBox1.BeginUpdate();
int focusedTagIndex = -1;
foreach (var t in availableTags)
{
var idx = checkedListBox1.Items.Add(t);
if (initiallyFocusedTag != null && t == initiallyFocusedTag)
{
focusedTagIndex = idx;
}
}
checkedListBox1.EndUpdate();
if (focusedTagIndex >= 0)
{
checkedListBox1.SelectedIndex = focusedTagIndex;
checkedListBox1.TopIndex = focusedTagIndex;
}
var listUpdater = Updaters.Create(
() => viewModel.SelectedTags,
() => viewModel.IsEditingFormula,
(selected, editingFormula) =>
{
checkedListBox1.Tag = "ignore events";
checkedListBox1.BeginUpdate();
foreach (var t in availableTags.ZipWithIndex())
{
checkedListBox1.SetItemChecked(t.Key, selected.Contains(t.Value));
}
checkedListBox1.Enabled = !editingFormula;
checkedListBox1.EndUpdate();
checkedListBox1.Tag = null;
}
);
Color getLinkColor(MessageSeverity sev) =>
sev == MessageSeverity.Error ? Color.Red :
sev == MessageSeverity.Warning ? Color.DarkOrange :
SystemColors.WindowText;
var formulaUpdater = Updaters.Create(
() => viewModel.Formula,
() => viewModel.IsEditingFormula,
() => viewModel.FormulaStatus,
(formula, editing, status) =>
{
formulaTextBox.Text = formula;
formulaTextBox.ReadOnly = !editing;
checkAllLinkLabel.Enabled = !editing;
checkNoneLinkLabel.Enabled = !editing;
okButton.Enabled = !editing;
formulaLinkLabel.Text = editing ? "done" : "edit";
var(statusText, statusSeverity) = status;
UIUtils.SetLinkContents(formulaStatusLinkLabel, statusText);
formulaLinkLabel.Enabled = statusSeverity != MessageSeverity.Error;
formulaStatusLinkLabel.ForeColor = getLinkColor(statusSeverity);
}
);
var formulaFocusSideEffect = Updaters.Create(
() => viewModel.IsEditingFormula,
editing =>
{
if (editing && formulaTextBox.CanFocus)
{
formulaTextBox.Focus();
}
}
);
var updateSuggestions = Updaters.Create(
() => viewModel.FormulaSuggesions,
value =>
{
var(list, selectedItem) = value;
suggestionsPanel.Visible = !list.IsEmpty;
suggestionsPanel.Controls.Clear();
suggestionsPanel.Controls.AddRange(list.Select((str, idx) =>
{
var lbl = new Label()
{
Text = str,
AutoSize = true,
Left = 4,
Top = 2 + idx * (formulaLinkLabel.Height + 3),
ForeColor = idx == selectedItem ? SystemColors.HighlightText : SystemColors.ControlText,
BackColor = idx == selectedItem ? SystemColors.Highlight : suggestionsPanel.BackColor
};
lbl.MouseDown += (s, e) => viewModel.OnSuggestionClicked(idx);
return(lbl);
}).ToArray());
if (selectedItem != null)
{
suggestionsPanel.ScrollControlIntoView(suggestionsPanel.Controls[selectedItem.Value]);
}
}
);
var listStatusUpdater = Updaters.Create(
() => viewModel.TagsListStatus,
(status) =>
{
var(statusText, statusSeverity) = status;
UIUtils.SetLinkContents(tagsStatusLinkLabel, statusText);
tagsStatusLinkLabel.ForeColor = getLinkColor(statusSeverity);
}
);
subscription = changeNotification.CreateSubscription(() =>
{
listUpdater();
formulaUpdater();
formulaFocusSideEffect();
updateSuggestions();
listStatusUpdater();
});
detectFormulaCursorPositionChange = Updaters.Create(
() => formulaTextBox.SelectionStart,
_ => changeNotification.Post()
);
checkedListBox1.ItemCheck += (sender, e) =>
{
if (checkedListBox1.Tag != null)
{
return;
}
var tag = (string)checkedListBox1.Items[e.Index];
if (e.NewValue == CheckState.Checked)
{
viewModel.OnUseTagClicked(tag);
}
else
{
viewModel.OnUnuseTagClicked(tag);
}
};
cancelButton.Click += (sender, e) => viewModel.OnCancelDialog();
okButton.Click += (sender, e) => viewModel.OnConfirmDialog();
}