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What it does is that if it doesn't allow multi-selection and you already have a different item selected, select the new one and deselect the previous one. (#361)

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BDisp
2020-04-14 14:34:54 +01:00
committed by GitHub
parent c51e4177fe
commit d772cf4962
1 changed files with 17 additions and 10 deletions
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27
Terminal.Gui/Views/ListView.cs
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@@ -4,7 +4,7 @@
// Authors:
// Miguel de Icaza (miguel@gnome.org)
//
//
//
// TODO:
// - Should we support multiple columns, if so, how should that be done?
// - Show mark for items that have been marked.
@@ -15,8 +15,8 @@
// - Would need a way to specify widths
// - Should it automatically extract data out of structs/classes based on public fields/properties?
// - It seems that this would be useful just for the "simple" API, not the IListDAtaSource, as that one has full support for it.
// - Should a function be specified that retrieves the individual elements?
//
// - Should a function be specified that retrieves the individual elements?
//
using System;
using System.Collections;
using System.Collections.Generic;
@@ -38,6 +38,8 @@ namespace Terminal.Gui {
/// This method is invoked to render a specified item, the method should cover the entire provided width.
/// </summary>
/// <returns>The render.</returns>
/// <param name="container">The list view to render.</param>
/// <param name="driver">The console driver to render.</param>
/// <param name="selected">Describes whether the item being rendered is currently selected by the user.</param>
/// <param name="item">The index of the item to render, zero for the first item and so on.</param>
/// <param name="col">The column where the rendering will start</param>
@@ -69,11 +71,11 @@ namespace Terminal.Gui {
/// <remarks>
/// <para>
/// The ListView displays lists of data and allows the user to scroll through the data
/// and optionally mark elements of the list (controlled by the AllowsMark property).
/// and optionally mark elements of the list (controlled by the AllowsMark property).
/// </para>
/// <para>
/// The ListView can either render an arbitrary IList object (for example, arrays, List&lt;T&gt;
/// and other collections) which are drawn by drawing the string/ustring contents or the
/// and other collections) which are drawn by drawing the string/ustring contents or the
/// result of calling ToString(). Alternatively, you can provide you own IListDataSource
/// object that gives you full control of what is rendered.
/// </para>
@@ -90,7 +92,7 @@ namespace Terminal.Gui {
/// <para>
/// When AllowsMark is set to true, then the rendering will prefix the list rendering with
/// [x] or [ ] and bind the space character to toggle the selection. If you desire a different
/// marking style do not set the property and provide your own custom rendering.
/// marking style do not set the property and provide your own custom rendering.
/// </para>
/// </remarks>
public class ListView : View {
@@ -142,7 +144,7 @@ namespace Terminal.Gui {
bool allowsMarking;
/// <summary>
/// Gets or sets a value indicating whether this <see cref="T:Terminal.Gui.ListView"/> allows items to be marked.
/// Gets or sets a value indicating whether this <see cref="T:Terminal.Gui.ListView"/> allows items to be marked.
/// </summary>
/// <value><c>true</c> if allows marking elements of the list; otherwise, <c>false</c>.
/// </value>
@@ -159,6 +161,9 @@ namespace Terminal.Gui {
}
}
/// <summary>
/// If set to true allows more than one item to be selected. If false only allow one item selected.
/// </summary>
public bool AllowsMultipleSelection { get; set; } = true;
/// <summary>
@@ -179,7 +184,7 @@ namespace Terminal.Gui {
}
/// <summary>
/// Gets or sets the currently selecteded item.
/// Gets or sets the currently selected item.
/// </summary>
/// <value>The selected item.</value>
public int SelectedItem {
@@ -330,8 +335,10 @@ namespace Terminal.Gui {
return false;
if (!AllowsMultipleSelection) {
for (int i = 0; i < Source.Count; i++) {
if (Source.IsMarked (i) && i != selected)
return false;
if (Source.IsMarked (i) && i != selected) {
Source.SetMark (i, false);
return true;
}
}
}
return true;