/// <summary>
/// Property Changed Callback method of the Owner Dependency Property.
/// </summary>
/// <param name="sender">The instance of the class that had the Owner property changed.</param>
/// <param name="e">The <see cref="System.Windows.DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void OnOwnerChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
SettingBase subject = (SettingBase)sender;
SettingCollection newValue = (SettingCollection)e.NewValue;
SettingCollection oldValue = (SettingCollection)e.OldValue;
if (newValue != null && subject.ValueType != null)
{
newValue.SettingsFile.AddValueType(subject.ValueType);
}
}
/// <summary>
/// Property Changed Callback method of the Owner Dependency Property.
/// </summary>
/// <param name="sender">The instance of the class that had the Owner property changed.</param>
/// <param name="e">The <see cref="System.Windows.DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void OnOwnerChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
WindowStateSetting subject = (WindowStateSetting)sender;
SettingCollection newValue = (SettingCollection)e.NewValue;
SettingCollection oldValue = (SettingCollection)e.OldValue;
if (newValue != null)
{
newValue.Initializing += subject.SettingCollection_Initializing;
newValue.Initialized += subject.SettingCollection_Initialized;
}
if (oldValue != null)
{
oldValue.Initializing -= subject.SettingCollection_Initializing;
newValue.Initialized -= subject.SettingCollection_Initialized;
}
}
private void SettingCollection_Initializing(object sender, System.EventArgs e)
{
SettingCollection subject = (SettingCollection)sender;
Window window = subject.Owner as Window;
if (window == null)
{
throw new InvalidOperationException(String.Format("The {0}'s owner must be a Window.", typeof(WindowStateSetting).Name));
}
// Back up the original window position and size in case the restored one is not valid.
this.positionAndSizeBackup = new int[]
{
(int)window.Left,
(int)window.Top,
(int)window.ActualWidth,
(int)window.ActualHeight
};
}
/// <summary>
/// Property Changed Callback method of the Settings Dependency Property.
/// </summary>
/// <param name="sender">The instance of the class that had the Settings property changed.</param>
/// <param name="e">The <see cref="System.Windows.DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void OnSettingsChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
FrameworkElement subject = (FrameworkElement)sender;
SettingCollection newValue = (SettingCollection)e.NewValue;
SettingCollection oldValue = (SettingCollection)e.OldValue;
if (newValue != null)
{
if (newValue.Owner != null)
{
throw new InvalidOperationException("You cannot assign the same settings to two different framework elements.");
}
newValue.Owner = subject;
}
if (oldValue != null)
{
oldValue.Owner = null;
}
}
private void SettingCollection_Initialized(object sender, System.EventArgs e)
{
SettingCollection subject = (SettingCollection)sender;
Window window = (Window)subject.Owner;
// Restore the original window position and size in case the window is outside the desktop working area.
int left = (int)window.Left;
int top = (int)window.Top;
int width = (int)window.ActualWidth;
int height = (int)window.ActualHeight;
Screen screen = Screen.FromRectangle(new Rectangle(left, top, width, height));
if (screen == null ||
!(screen.WorkingArea.Contains(new DPoint(left + TOLERANCE_X, top + TOLERANCE_Y)) ||
screen.WorkingArea.Contains(new DPoint(left + width - TOLERANCE_X, top + TOLERANCE_Y))))
{
window.Left = this.positionAndSizeBackup[0];
window.Top = this.positionAndSizeBackup[1];
window.Width = this.positionAndSizeBackup[2];
window.Height = this.positionAndSizeBackup[3];
}
this.positionAndSizeBackup = null;
}
/// <summary>
/// Property setter method of Settings Dependency Property.
/// TODO: (PS) Comment this.
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="value">The supposed value of the Settings property.</param>
public static void SetSettings(this FrameworkElement subject, SettingCollection value)
{
subject.SetValue(SettingsProperty, value);
}
