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401 lines
12 KiB
401 lines
12 KiB
/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using Xceed.Wpf.AvalonDock.Layout;
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using System.Windows.Input;
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using System.Windows;
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using Xceed.Wpf.AvalonDock.Commands;
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using System.Windows.Data;
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namespace Xceed.Wpf.AvalonDock.Controls
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{
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public class LayoutAnchorableItem : LayoutItem
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{
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#region Members
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private LayoutAnchorable _anchorable;
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private ICommand _defaultHideCommand;
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private ICommand _defaultAutoHideCommand;
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private ICommand _defaultDockCommand;
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private ReentrantFlag _visibilityReentrantFlag = new ReentrantFlag();
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#endregion
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#region Constructors
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internal LayoutAnchorableItem()
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{
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}
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#endregion
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#region Properties
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#region HideCommand
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/// <summary>
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/// HideCommand Dependency Property
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/// </summary>
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public static readonly DependencyProperty HideCommandProperty = DependencyProperty.Register( "HideCommand", typeof( ICommand ), typeof( LayoutAnchorableItem ),
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new FrameworkPropertyMetadata( null, new PropertyChangedCallback( OnHideCommandChanged ), new CoerceValueCallback( CoerceHideCommandValue ) ) );
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/// <summary>
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/// Gets or sets the HideCommand property. This dependency property
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/// indicates the command to execute when an anchorable is hidden.
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/// </summary>
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public ICommand HideCommand
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{
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get
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{
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return ( ICommand )GetValue( HideCommandProperty );
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}
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set
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{
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SetValue( HideCommandProperty, value );
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}
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}
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/// <summary>
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/// Handles changes to the HideCommand property.
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/// </summary>
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private static void OnHideCommandChanged( DependencyObject d, DependencyPropertyChangedEventArgs e )
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{
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( ( LayoutAnchorableItem )d ).OnHideCommandChanged( e );
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}
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/// <summary>
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/// Provides derived classes an opportunity to handle changes to the HideCommand property.
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/// </summary>
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protected virtual void OnHideCommandChanged( DependencyPropertyChangedEventArgs e )
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{
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}
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/// <summary>
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/// Coerces the HideCommand value.
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/// </summary>
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private static object CoerceHideCommandValue( DependencyObject d, object value )
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{
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return value;
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}
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private bool CanExecuteHideCommand( object parameter )
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{
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if( LayoutElement == null )
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return false;
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return _anchorable.CanHide;
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}
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private void ExecuteHideCommand( object parameter )
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{
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if( _anchorable != null && _anchorable.Root != null && _anchorable.Root.Manager != null )
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_anchorable.Root.Manager._ExecuteHideCommand( _anchorable );
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}
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#endregion
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#region AutoHideCommand
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/// <summary>
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/// AutoHideCommand Dependency Property
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/// </summary>
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public static readonly DependencyProperty AutoHideCommandProperty = DependencyProperty.Register( "AutoHideCommand", typeof( ICommand ), typeof( LayoutAnchorableItem ),
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new FrameworkPropertyMetadata( null, new PropertyChangedCallback( OnAutoHideCommandChanged ), new CoerceValueCallback( CoerceAutoHideCommandValue ) ) );
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/// <summary>
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/// Gets or sets the AutoHideCommand property. This dependency property
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/// indicates the command to execute when user click the auto hide button.
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/// </summary>
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/// <remarks>By default this command toggles auto hide state for an anchorable.</remarks>
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public ICommand AutoHideCommand
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{
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get
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{
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return ( ICommand )GetValue( AutoHideCommandProperty );
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}
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set
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{
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SetValue( AutoHideCommandProperty, value );
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}
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}
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/// <summary>
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/// Handles changes to the AutoHideCommand property.
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/// </summary>
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private static void OnAutoHideCommandChanged( DependencyObject d, DependencyPropertyChangedEventArgs e )
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{
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( ( LayoutAnchorableItem )d ).OnAutoHideCommandChanged( e );
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}
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/// <summary>
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/// Provides derived classes an opportunity to handle changes to the AutoHideCommand property.
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/// </summary>
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protected virtual void OnAutoHideCommandChanged( DependencyPropertyChangedEventArgs e )
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{
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}
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/// <summary>
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/// Coerces the AutoHideCommand value.
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/// </summary>
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private static object CoerceAutoHideCommandValue( DependencyObject d, object value )
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{
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return value;
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}
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private bool CanExecuteAutoHideCommand( object parameter )
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{
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if( LayoutElement == null )
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return false;
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if( LayoutElement.FindParent<LayoutAnchorableFloatingWindow>() != null )
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return false;//is floating
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return _anchorable.CanAutoHide;
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}
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private void ExecuteAutoHideCommand( object parameter )
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{
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if( _anchorable != null && _anchorable.Root != null && _anchorable.Root.Manager != null )
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_anchorable.Root.Manager._ExecuteAutoHideCommand( _anchorable );
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}
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#endregion
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#region DockCommand
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/// <summary>
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/// DockCommand Dependency Property
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/// </summary>
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public static readonly DependencyProperty DockCommandProperty = DependencyProperty.Register( "DockCommand", typeof( ICommand ), typeof( LayoutAnchorableItem ),
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new FrameworkPropertyMetadata( null, new PropertyChangedCallback( OnDockCommandChanged ), new CoerceValueCallback( CoerceDockCommandValue ) ) );
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/// <summary>
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/// Gets or sets the DockCommand property. This dependency property
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/// indicates the command to execute when user click the Dock button.
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/// </summary>
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/// <remarks>By default this command moves the anchorable inside the container pane which previously hosted the object.</remarks>
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public ICommand DockCommand
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{
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get
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{
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return ( ICommand )GetValue( DockCommandProperty );
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}
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set
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{
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SetValue( DockCommandProperty, value );
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}
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}
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/// <summary>
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/// Handles changes to the DockCommand property.
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/// </summary>
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private static void OnDockCommandChanged( DependencyObject d, DependencyPropertyChangedEventArgs e )
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{
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( ( LayoutAnchorableItem )d ).OnDockCommandChanged( e );
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}
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/// <summary>
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/// Provides derived classes an opportunity to handle changes to the DockCommand property.
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/// </summary>
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protected virtual void OnDockCommandChanged( DependencyPropertyChangedEventArgs e )
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{
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}
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/// <summary>
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/// Coerces the DockCommand value.
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/// </summary>
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private static object CoerceDockCommandValue( DependencyObject d, object value )
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{
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return value;
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}
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private bool CanExecuteDockCommand( object parameter )
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{
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if( LayoutElement == null )
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return false;
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return LayoutElement.FindParent<LayoutAnchorableFloatingWindow>() != null;
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}
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private void ExecuteDockCommand( object parameter )
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{
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LayoutElement.Root.Manager._ExecuteDockCommand( _anchorable );
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}
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#endregion
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#region CanHide
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/// <summary>
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/// CanHide Dependency Property
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/// </summary>
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public static readonly DependencyProperty CanHideProperty = DependencyProperty.Register( "CanHide", typeof( bool ), typeof( LayoutAnchorableItem ), new FrameworkPropertyMetadata( ( bool )true,
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new PropertyChangedCallback( OnCanHideChanged ) ) );
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/// <summary>
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/// Gets or sets the CanHide property. This dependency property
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/// indicates if user can hide the anchorable item.
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/// </summary>
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public bool CanHide
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{
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get
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{
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return ( bool )GetValue( CanHideProperty );
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}
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set
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{
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SetValue( CanHideProperty, value );
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}
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}
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/// <summary>
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/// Handles changes to the CanHide property.
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/// </summary>
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private static void OnCanHideChanged( DependencyObject d, DependencyPropertyChangedEventArgs e )
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{
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( ( LayoutAnchorableItem )d ).OnCanHideChanged( e );
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}
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/// <summary>
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/// Provides derived classes an opportunity to handle changes to the CanHide property.
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/// </summary>
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protected virtual void OnCanHideChanged( DependencyPropertyChangedEventArgs e )
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{
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if( _anchorable != null )
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_anchorable.CanHide = ( bool )e.NewValue;
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}
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#endregion
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#endregion
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#region Overrides
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internal override void Attach( LayoutContent model )
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{
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_anchorable = model as LayoutAnchorable;
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_anchorable.IsVisibleChanged += new EventHandler( _anchorable_IsVisibleChanged );
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base.Attach( model );
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}
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internal override void Detach()
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{
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_anchorable.IsVisibleChanged -= new EventHandler( _anchorable_IsVisibleChanged );
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_anchorable = null;
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base.Detach();
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}
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protected override bool CanExecuteDockAsDocumentCommand()
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{
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var canExecute = base.CanExecuteDockAsDocumentCommand();
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if( canExecute && ( _anchorable != null ) )
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return _anchorable.CanDockAsTabbedDocument;
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return canExecute;
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}
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protected override void Close()
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{
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if( ( _anchorable.Root != null ) && ( _anchorable.Root.Manager != null ) )
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{
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var dockingManager = _anchorable.Root.Manager;
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dockingManager._ExecuteCloseCommand( _anchorable );
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}
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}
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protected override void InitDefaultCommands()
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{
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_defaultHideCommand = new RelayCommand( ( p ) => ExecuteHideCommand( p ), ( p ) => CanExecuteHideCommand( p ) );
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_defaultAutoHideCommand = new RelayCommand( ( p ) => ExecuteAutoHideCommand( p ), ( p ) => CanExecuteAutoHideCommand( p ) );
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_defaultDockCommand = new RelayCommand( ( p ) => ExecuteDockCommand( p ), ( p ) => CanExecuteDockCommand( p ) );
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base.InitDefaultCommands();
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}
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protected override void ClearDefaultBindings()
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{
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if( HideCommand == _defaultHideCommand )
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BindingOperations.ClearBinding( this, HideCommandProperty );
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if( AutoHideCommand == _defaultAutoHideCommand )
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BindingOperations.ClearBinding( this, AutoHideCommandProperty );
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if( DockCommand == _defaultDockCommand )
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BindingOperations.ClearBinding( this, DockCommandProperty );
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base.ClearDefaultBindings();
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}
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protected override void SetDefaultBindings()
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{
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if( HideCommand == null )
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HideCommand = _defaultHideCommand;
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if( AutoHideCommand == null )
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AutoHideCommand = _defaultAutoHideCommand;
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if( DockCommand == null )
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DockCommand = _defaultDockCommand;
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Visibility = _anchorable.IsVisible ? Visibility.Visible : System.Windows.Visibility.Hidden;
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base.SetDefaultBindings();
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}
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protected override void OnVisibilityChanged()
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{
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if( _anchorable != null && _anchorable.Root != null )
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{
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if( _visibilityReentrantFlag.CanEnter )
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{
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using( _visibilityReentrantFlag.Enter() )
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{
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if( Visibility == System.Windows.Visibility.Hidden )
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_anchorable.Hide( false );
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else if( Visibility == System.Windows.Visibility.Visible )
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_anchorable.Show();
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}
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}
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}
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base.OnVisibilityChanged();
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}
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#endregion
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#region Private Methods
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private void _anchorable_IsVisibleChanged( object sender, EventArgs e )
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{
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if( _anchorable != null && _anchorable.Root != null )
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{
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if( _visibilityReentrantFlag.CanEnter )
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{
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using( _visibilityReentrantFlag.Enter() )
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{
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if( _anchorable.IsVisible )
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Visibility = Visibility.Visible;
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else
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Visibility = Visibility.Hidden;
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}
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}
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}
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}
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#endregion
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}
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}
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