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//
// ListViewBackend.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2011 Xamarin Inc
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Xwt.Backends;
namespace Xwt.GtkBackend
{
public class ListViewBackend: TableViewBackend, IListViewBackend
{
bool showBorder;
protected new IListViewEventSink EventSink {
get { return (IListViewEventSink)base.EventSink; }
}
public override void EnableEvent (object eventId)
{
base.EnableEvent (eventId);
if (eventId is ListViewEvent) {
if (((ListViewEvent)eventId) == ListViewEvent.RowActivated)
Widget.RowActivated += HandleRowActivated;
}
}
public override void DisableEvent (object eventId)
{
base.DisableEvent (eventId);
if (eventId is ListViewEvent) {
if (((ListViewEvent)eventId) == ListViewEvent.RowActivated)
Widget.RowActivated -= HandleRowActivated;
}
}
void HandleRowActivated (object o, Gtk.RowActivatedArgs args)
{
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnRowActivated (args.Path.Indices[0]);
});
}
public void SetSource (IListDataSource source, IBackend sourceBackend)
{
ListStoreBackend b = sourceBackend as ListStoreBackend;
if (b == null) {
CustomListModel model = new CustomListModel (source, Widget);
Widget.Model = model.Store;
} else
Widget.Model = b.Store;
}
public void SelectRow (int row)
{
Gtk.TreeIter it;
if (!Widget.Model.IterNthChild (out it, row))
return;
Widget.Selection.SelectIter (it);
}
public void UnselectRow (int row)
{
Gtk.TreeIter it;
if (!Widget.Model.IterNthChild (out it, row))
return;
Widget.Selection.UnselectIter (it);
}
public void ScrollToRow (int row)
{
Gtk.TreeIter it;
if (!Widget.Model.IterNthChild (out it, row))
return;
ScrollToRow (it);
}
public void StartEditingCell (int row, CellView cell)
{
var col = GetCellColumn (cell);
if (col != null)
Widget.SetCursor (new Gtk.TreePath (new [] { row }), col, true);
}
public int[] SelectedRows {
get {
var sel = Widget.Selection.GetSelectedRows ();
int[] res = new int [sel.Length];
for (int n=0; n<sel.Length; n++)
res [n] = sel [n].Indices[0];
return res;
}
}
public int FocusedRow {
get {
Gtk.TreePath path;
Gtk.TreeViewColumn column;
Widget.GetCursor (out path, out column);
if (path == null)
return -1;
return path.Indices [0];
}
set {
Gtk.TreePath path = new Gtk.TreePath (new [] { value >= 0 ? value : int.MaxValue });
Widget.SetCursor (path, null, false);
}
}
public int CurrentEventRow {
get;
internal set;
}
public bool BorderVisible {
get {
return ScrolledWindow.ShadowType == Gtk.ShadowType.In;
}
set {
showBorder = value;
UpdateBorder ();
}
}
void UpdateBorder ()
{
var shadowType = showBorder ? Gtk.ShadowType.In : Gtk.ShadowType.None;
if (ScrolledWindow.Child is Gtk.Viewport)
((Gtk.Viewport) ScrolledWindow.Child).ShadowType = shadowType;
else
ScrolledWindow.ShadowType = shadowType;
}
public bool HeadersVisible {
get {
return Widget.HeadersVisible;
}
set {
Widget.HeadersVisible = value;
}
}
public int GetRowAtPosition (Point p)
{
Gtk.TreePath path = GetPathAtPosition (p);
if (path != null)
return path.Indices [0];
return -1;
}
public Rectangle GetCellBounds (int row, CellView cell, bool includeMargin)
{
var col = GetCellColumn (cell);
var cr = GetCellRenderer (cell);
Gtk.TreePath path = new Gtk.TreePath (new [] { row });
Gtk.TreeIter iter;
if (!Widget.Model.GetIterFromString (out iter, path.ToString ()))
return Rectangle.Zero;
if (includeMargin)
return ((ICellRendererTarget)this).GetCellBackgroundBounds (col, cr, iter);
else
return ((ICellRendererTarget)this).GetCellBounds (col, cr, iter);
}
public Rectangle GetRowBounds (int row, bool includeMargin)
{
Gtk.TreePath path = new Gtk.TreePath (new [] { row });
Gtk.TreeIter iter;
if (!Widget.Model.GetIterFromString (out iter, path.ToString ()))
return Rectangle.Zero;
if (includeMargin)
return GetRowBackgroundBounds (iter);
else
return GetRowBounds (iter);
}
public override void SetCurrentEventRow (string path)
{
if (path.Contains (":")) {
path = path.Split (':') [0];
}
CurrentEventRow = int.Parse (path);
}
}
}
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