/// <summary>
/// Restores the state of a control.
/// </summary>
/// <param name="c">The c.</param>
/// <param name="info">The info.</param>
public static void RestoreState(
Control c,
RestoreInformation info )
{
RestoreState( Storage, c, info );
}
/// <summary>
/// Restores the state of a control.
/// Works for list views, too (column widths).
/// </summary>
/// <param name="storage">The storage.</param>
/// <param name="c">The c.</param>
/// <param name="info">The info.</param>
public static void RestoreState(
IPersistentPairStorage storage,
Control c,
RestoreInformation info )
{
string prefix = c.Name;
object o = null;
if ( c is Splitter )
{
o = RestoreValue( storage, prefix + @".SplitPosition" );
if ( o != null )
{
((Splitter)c).SplitPosition = Convert.ToInt32( o );
}
}
else if ( c is Form )
{
Form s = c as Form;
RestoreState( storage, s, info );
}
else if ( c is SplitContainer )
{
SplitContainer s = c as SplitContainer;
RestoreState( storage, s );
}
else if ( c is TabControl )
{
o = RestoreValue( storage, prefix + @".SelectedIndex" );
if ( o != null )
{
((TabControl)c).SelectedIndex = Convert.ToInt32( o );
}
}
else if ( c is ListView )
{
ListView listView = c as ListView;
o = RestoreValue( storage, prefix + @".Columns.Count" );
if ( o != null )
{
int count = Convert.ToInt32( o );
for ( int i = 0; i < count; ++i )
{
o = RestoreValue( storage, prefix + @".Columns." + (i + 1) + @".Width" );
if ( o != null && i < listView.Columns.Count )
{
listView.Columns[i].Width = Convert.ToInt32( o );
}
}
}
// --
listView.SelectedItems.Clear();
o = RestoreValue( storage, prefix + @".SelectedIndexes.Count" );
if ( o != null )
{
int count = Convert.ToInt32( o );
for ( int i = 0; i < count; ++i )
{
o = RestoreValue( storage, prefix + @".SelectedIndexes." + (i + 1) + @".Index" );
if ( o != null )
{
int index = ConvertHelper.ToInt32( o );
if ( index < listView.Items.Count )
{
listView.Items[index].Checked = true;
}
}
}
}
}
else if ( c is TextBox )
{
TextBox t = c as TextBox;
o = RestoreValue( storage, prefix + @".Text" );
if ( o != null )
{
t.Text = o as string;
}
}
else if ( c is CheckBox )
{
CheckBox cb = c as CheckBox;
o = RestoreValue( storage, prefix + @".CheckState" );
if ( o != null )
{
cb.CheckState = (CheckState)Enum.Parse(
typeof( CheckState ),
o as string,
true );
}
}
else if ( c is RadioButton )
{
RadioButton rb = c as RadioButton;
o = RestoreValue( storage, prefix + @".Checked" );
if ( o != null )
{
rb.Checked = ConvertHelper.ToBoolean( o );
}
}
else if ( c is DateTimePicker )
{
DateTimePicker rb = c as DateTimePicker;
o = RestoreValue( storage, prefix + @".Value" );
if ( o != null )
{
rb.Value = ConvertHelper.ToDateTime( o );
}
o = RestoreValue( storage, prefix + @".Checked" );
if ( o != null )
{
rb.Checked = ConvertHelper.ToBoolean( o );
}
}
else if ( c is CheckedListBox )
{
CheckedListBox clb = c as CheckedListBox;
o = RestoreValue( storage, prefix + @".CheckedIndices" );
if ( o is string )
{
o = StringHelper.DeserializeFromString( o as string );
if ( o is int[] )
{
List<int> selectedIndices =
new List<int>( o as int[] );
for ( int i = 0; i < clb.Items.Count; i++ )
{
if ( selectedIndices.Contains( i ) )
{
clb.SetItemChecked( i, true );
}
else
{
clb.SetItemChecked( i, false );
}
}
}
}
}
else if ( c is ComboBox )
{
ComboBox rb = c as ComboBox;
o = RestoreValue( storage, prefix + @".SelectedIndex" );
if ( o != null )
{
int index = ConvertHelper.ToInt32( o );
if ( index <= rb.Items.Count - 1 )
{
rb.SelectedIndex = index;
}
}
if ( rb.DropDownStyle == ComboBoxStyle.DropDown )
{
rb.Text = RestoreValue( storage, prefix + @".Text" ) as string;
}
}
else
{
Debug.Assert(
false,
string.Format(
@"Trying to restore the state of an unknown control type: '{0}'.",
c.GetType() ) );
}
// --
if ( c is ISaveRestoreState )
{
ISaveRestoreState srs = c as ISaveRestoreState;
if ( !protectRecursion.Contains( srs ) )
{
protectRecursion.Add( srs );
try
{
srs.OnSaveState( storage, prefix );
}
finally
{
protectRecursion.Remove( srs );
}
}
}
}
/// <summary>
/// Restores the state of a control.
/// </summary>
/// <param name="storage">The storage.</param>
/// <param name="c">The c.</param>
/// <param name="info">The info.</param>
private static void RestoreState(
IPersistentPairStorage storage,
Form c,
RestoreInformation info )
{
// If child, center to parent.
bool centerParent = !c.TopLevel || c.ParentForm != null;
bool hasAnythingRestored = false;
string prefix = c.Name;
object o = null;
if ( !centerParent )
{
o = RestoreValue( storage, prefix + @".Left" );
if ( o != null )
{
hasAnythingRestored = true;
c.Left = Convert.ToInt32( o );
}
o = RestoreValue( storage, prefix + @".Top" );
if ( o != null )
{
hasAnythingRestored = true;
c.Top = Convert.ToInt32( o );
}
}
o = RestoreValue( storage, prefix + @".Width" );
if ( o != null )
{
hasAnythingRestored = true;
c.Width = Convert.ToInt32( o );
}
o = RestoreValue( storage, prefix + @".Height" );
if ( o != null )
{
hasAnythingRestored = true;
c.Height = Convert.ToInt32( o );
}
o = RestoreValue( storage, prefix + @".WindowState" );
if ( o != null )
{
hasAnythingRestored = true;
FormWindowState state = (FormWindowState)Convert.ToInt32( o );
// Don't allow to start minimized.
if ( state != c.WindowState &&
state != FormWindowState.Minimized )
{
if ( c.StartPosition != FormStartPosition.Manual )
{
c.StartPosition = FormStartPosition.Manual;
}
c.WindowState = state;
}
if ( state == FormWindowState.Minimized )
{
c.WindowState = FormWindowState.Maximized;
}
}
// --
// 2007-01-28: Zoom if desired.
if ( !hasAnythingRestored &&
info != null &&
info.SuggestZoomPercent > 0 )
{
double zoom = (double)info.SuggestZoomPercent / 100.0;
Size screenSize = SystemInformation.WorkingArea.Size;
Size windowSize = c.Size;
int width;
int height;
if ( (double)screenSize.Width / (double)windowSize.Width <
(double)screenSize.Height / (double)windowSize.Height )
{
// Scale in X.
width = (int)((double)screenSize.Width * zoom);
double fac = (double)width / (double)c.Width;
height = (int)(fac * (double)c.Height);
}
else
{
// Scale in Y.
height = (int)((double)screenSize.Height * zoom);
double fac = (double)height / (double)c.Height;
width = (int)(fac * (double)c.Width);
}
// Only apply if getting larger.
if ( width > c.Width && height > c.Height )
{
c.Width = width;
c.Height = height;
}
}
// --
// If child, center to parent.
if ( centerParent )
{
c.StartPosition = FormStartPosition.CenterParent;
}
}
