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|
//
// CommandManager.cs
//
// Author:
// Lluis Sanchez Gual
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// 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 System.Reflection;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using MonoDevelop.Components.Commands.ExtensionNodes;
using Mono.Addins;
using MonoDevelop.Core;
using MonoDevelop.Ide;
namespace MonoDevelop.Components.Commands
{
public class CommandManager: IDisposable
{
Gtk.Window rootWidget;
KeyBindingManager bindings;
Gtk.AccelGroup accelGroup;
uint statusUpdateWait = 500;
DateTime lastUserInteraction;
KeyboardShortcut[] chords;
string chord;
internal const int SlowCommandWarningTime = 50;
Dictionary<object,Command> cmds = new Dictionary<object,Command> ();
Hashtable handlerInfo = new Hashtable ();
List<ICommandBar> toolbars = new List<ICommandBar> ();
CommandTargetChain globalHandlerChain;
ArrayList commandUpdateErrors = new ArrayList ();
ArrayList visitors = new ArrayList ();
LinkedList<Gtk.Window> topLevelWindows = new LinkedList<Gtk.Window> ();
Stack delegatorStack = new Stack ();
List<Gtk.Window> activeWindowStack = new List<Gtk.Window> ();
HashSet<object> visitedTargets = new HashSet<object> ();
bool disposed;
bool toolbarUpdaterRunning;
bool enableToolbarUpdate;
int guiLock;
int lastX, lastY;
// Fields used to keep track of the application focus
bool appHasFocus;
Gtk.Window lastFocused;
DateTime focusCheckDelayTimeout = DateTime.MinValue;
internal static readonly object CommandRouteTerminator = new object ();
internal bool handlerFoundInMulticast;
Gtk.Widget lastActiveWidget;
public CommandManager (): this (null)
{
}
public CommandManager (Gtk.Window root)
{
rootWidget = root;
bindings = new KeyBindingManager ();
ActionCommand c = new ActionCommand (CommandSystemCommands.ToolbarList, "Toolbar List", null, null, ActionType.Check);
c.CommandArray = true;
RegisterCommand (c);
#if MAC
AppKit.NSEvent.AddLocalMonitorForEventsMatchingMask (AppKit.NSEventMask.KeyDown, OnNSEventKeyPress);
#endif
}
/// <summary>
/// Loads command definitions from the provided extension path
/// </summary>
public void LoadCommands (string addinPath)
{
AddinManager.AddExtensionNodeHandler (addinPath, OnExtensionChange);
}
/// <summary>
/// Loads key binding schemes from the provided extension path
/// </summary>
public void LoadKeyBindingSchemes (string addinPath)
{
KeyBindingService.LoadBindingsFromExtensionPath (addinPath);
}
void OnExtensionChange (object s, ExtensionNodeEventArgs args)
{
if (args.Change == ExtensionChange.Add) {
if (args.ExtensionNode is CommandCodon)
RegisterCommand ((Command) args.ExtensionObject);
else
// It's a category node. Track changes in the category.
args.ExtensionNode.ExtensionNodeChanged += OnExtensionChange;
}
else {
if (args.ExtensionNode is CommandCodon)
UnregisterCommand ((Command)args.ExtensionObject);
else
args.ExtensionNode.ExtensionNodeChanged -= OnExtensionChange;
}
}
/// <summary>
/// Creates a menu bar from the menu definition at the provided extension path
/// </summary>
public Gtk.MenuBar CreateMenuBar (string addinPath)
{
CommandEntrySet cset = CreateCommandEntrySet (addinPath);
return CreateMenuBar (addinPath, cset);
}
/// <summary>
/// Creates a set of toolbars from the provided extension path
/// </summary>
public Gtk.Toolbar[] CreateToolbarSet (string addinPath)
{
ArrayList bars = new ArrayList ();
CommandEntrySet cset = CreateCommandEntrySet (addinPath);
foreach (CommandEntry ce in cset) {
CommandEntrySet ces = ce as CommandEntrySet;
if (ces != null)
bars.Add (CreateToolbar (addinPath + "/" + ces.CommandId, ces));
}
return (Gtk.Toolbar[]) bars.ToArray (typeof(Gtk.Toolbar));
}
/// <summary>
/// Creates a toolbar from the provided extension path
/// </summary>
public Gtk.Toolbar CreateToolbar (string addinPath)
{
CommandEntrySet cset = CreateCommandEntrySet (addinPath);
return CreateToolbar (addinPath, cset);
}
/// <summary>
/// Creates a menu from the provided extension path
/// </summary>
public Gtk.Menu CreateMenu (string addinPath)
{
CommandEntrySet cset = CreateCommandEntrySet (addinPath);
return CreateMenu (cset);
}
/// <summary>
/// Shows a context menu.
/// </summary>
/// <param name='parent'>
/// Widget for which the context menu is being shown
/// </param>
/// <param name='evt'>
/// Current event object
/// </param>
/// <param name='addinPath'>
/// Extension path to the definition of the menu
/// </param>
public void ShowContextMenu (Gtk.Widget parent, Gdk.EventButton evt, string addinPath)
{
ShowContextMenu (parent, evt, CreateCommandEntrySet (addinPath));
}
/// <summary>
/// Shows a context menu.
/// </summary>
/// <param name='parent'>
/// Widget for which the context menu is being shown
/// </param>
/// <param name='evt'>
/// Current event object
/// </param>
/// <param name='ctx'>
/// Extension context to use to query the extension path
/// </param>
/// <param name='addinPath'>
/// Extension path to the definition of the menu
/// </param>
public void ShowContextMenu (Gtk.Widget parent, Gdk.EventButton evt,
ExtensionContext ctx, string addinPath)
{
ShowContextMenu (parent, evt, CreateCommandEntrySet (ctx, addinPath));
}
/// <summary>
/// Creates a command entry set.
/// </summary>
/// <returns>
/// The command entry set.
/// </returns>
/// <param name='ctx'>
/// Extension context to use to query the extension path
/// </param>
/// <param name='addinPath'>
/// Extension path with the command definitions
/// </param>
public CommandEntrySet CreateCommandEntrySet (ExtensionContext ctx, string addinPath)
{
CommandEntrySet cset = new CommandEntrySet ();
object[] items = ctx.GetExtensionObjects (addinPath, false);
foreach (CommandEntry e in items)
cset.Add (e);
return cset;
}
/// <summary>
/// Creates a command entry set.
/// </summary>
/// <returns>
/// The command entry set.
/// </returns>
/// <param name='addinPath'>
/// Extension path with the command definitions
/// </param>
public CommandEntrySet CreateCommandEntrySet (string addinPath)
{
CommandEntrySet cset = new CommandEntrySet ();
object[] items = AddinManager.GetExtensionObjects (addinPath, false);
foreach (CommandEntry e in items)
cset.Add (e);
return cset;
}
bool isEnabled = true;
/// <summary>
/// Gets or sets a value indicating whether the command manager is enabled. When disabled, all commands are disabled.
/// </summary>
public bool IsEnabled {
get {
return isEnabled;
}
set {
isEnabled = value;
}
}
/// <summary>
/// The command currently being executed or for which the status is being checked
/// </summary>
public Command CurrentCommand { get; private set; }
bool CanUseBinding (KeyboardShortcut[] chords, KeyboardShortcut[] accels, out KeyBinding binding, out bool isChord)
{
if (chords != null) {
foreach (var chord in chords) {
foreach (var accel in accels) {
binding = new KeyBinding (chord, accel);
if (bindings.BindingExists (binding)) {
isChord = false;
return true;
}
}
}
} else {
foreach (var accel in accels) {
if (bindings.ChordExists (accel)) {
// Chords take precedence over bindings with the same shortcut.
binding = null;
isChord = true;
return false;
}
binding = new KeyBinding (accel);
if (bindings.BindingExists (binding)) {
isChord = false;
return true;
}
}
}
isChord = false;
binding = null;
return false;
}
public event EventHandler<KeyBindingFailedEventArgs> KeyBindingFailed;
#if MAC
AppKit.NSEvent OnNSEventKeyPress (AppKit.NSEvent ev)
{
// If we have a native window that can handle this command, let it process
// the keys itself and do not go through the command manager.
// Events in Gtk windows do not pass through here except when they're done
// in native NSViews. PerformKeyEquivalent for them will not return true,
// so we're always going to fallback to the command manager for them.
// If no window is focused, it's probably because a gtk window had focus
// and the focus didn't go to any other window on close. (debug popup on hover
// that gets closed on unhover). So if no keywindow is focused, events will
// pass through here and let us use the command manager.
var window = AppKit.NSApplication.SharedApplication.KeyWindow;
if (window != null) {
// Try the handler in the native window.
if (window.PerformKeyEquivalent (ev))
return null;
// If the window is a gtk window and is registered in the command manager
// process the events through the handler.
var gtkWindow = MonoDevelop.Components.Mac.GtkMacInterop.GetGtkWindow (window);
if (gtkWindow != null && !TopLevelWindowStack.Contains (gtkWindow))
return null;
}
var gdkev = MonoDevelop.Components.Mac.GtkMacInterop.ConvertKeyEvent (ev);
if (gdkev != null) {
if (ProcessKeyEvent (gdkev))
return null;
}
return ev;
}
#endif
[GLib.ConnectBefore]
void OnKeyPressed (object o, Gtk.KeyPressEventArgs e)
{
e.RetVal = ProcessKeyEvent (e.Event);
}
bool ProcessKeyEvent (Gdk.EventKey ev)
{
if (!IsEnabled)
return true;
RegisterUserInteraction ();
bool complete;
KeyboardShortcut[] accels = KeyBindingManager.AccelsFromKey (ev, out complete);
if (!complete) {
// incomplete accel
return true;
}
List<Command> commands = null;
KeyBinding binding;
bool isChord;
bool result;
if (CanUseBinding (chords, accels, out binding, out isChord)) {
commands = bindings.Commands (binding);
result = true;
chords = null;
chord = null;
} else if (isChord) {
chord = KeyBindingManager.AccelLabelFromKey (ev);
chords = accels;
return true;
} else if (chords != null) {
// Note: The user has entered a valid chord but the accel was invalid.
if (KeyBindingFailed != null) {
string accel = KeyBindingManager.AccelLabelFromKey (ev);
KeyBindingFailed (this, new KeyBindingFailedEventArgs (GettextCatalog.GetString ("The key combination ({0}, {1}) is not a command.", chord, accel)));
}
chords = null;
chord = null;
return true;
} else {
chords = null;
chord = null;
NotifyKeyPressed (ev);
return false;
}
var toplevelFocus = IdeApp.Workbench.HasToplevelFocus;
bool bypass = false;
for (int i = 0; i < commands.Count; i++) {
CommandInfo cinfo = GetCommandInfo (commands[i].Id, new CommandTargetRoute ());
if (cinfo.Bypass) {
bypass = true;
continue;
}
if (cinfo.Enabled && cinfo.Visible && DispatchCommand (commands[i].Id, CommandSource.Keybinding))
return result;
}
// The command has not been handled.
// If there is at least a handler that sets the bypass flag, allow gtk to execute the default action
if (commands.Count > 0 && !bypass) {
result = true;
} else {
result = false;
NotifyKeyPressed (ev);
}
chords = null;
return result;
}
void NotifyKeyPressed (Gdk.EventKey ev)
{
if (KeyPressed != null)
KeyPressed (this, new KeyPressArgs () { Key = ev.Key, Modifiers = ev.State });
}
/// <summary>
/// Sets the root window. The manager will start the command route at this window, if no other is active.
/// </summary>
public void SetRootWindow (Gtk.Window root)
{
if (rootWidget != null)
rootWidget.KeyPressEvent -= OnKeyPressed;
rootWidget = root;
rootWidget.AddAccelGroup (AccelGroup);
RegisterTopWindow (rootWidget);
}
internal IEnumerable<Gtk.Window> TopLevelWindowStack {
get { return topLevelWindows; }
}
internal void RegisterTopWindow (Gtk.Window win)
{
if (topLevelWindows.First != null && topLevelWindows.First.Value == win)
return;
// Ensure all events that were subscribed in StartWaitingForUserInteraction are unsubscribed
// before doing any change to the topLevelWindows list
EndWaitingForUserInteraction ();
var node = topLevelWindows.Find (win);
if (node != null) {
if (win.HasToplevelFocus) {
topLevelWindows.Remove (node);
topLevelWindows.AddFirst (node);
}
} else {
topLevelWindows.AddFirst (win);
win.KeyPressEvent += OnKeyPressed;
win.ButtonPressEvent += HandleButtonPressEvent;
win.Destroyed += TopLevelDestroyed;
}
}
[GLib.ConnectBefore]
void HandleButtonPressEvent (object o, Gtk.ButtonPressEventArgs args)
{
RegisterUserInteraction ();
}
void TopLevelDestroyed (object o, EventArgs args)
{
RegisterUserInteraction ();
Gtk.Window w = (Gtk.Window) o;
w.Destroyed -= TopLevelDestroyed;
w.KeyPressEvent -= OnKeyPressed;
w.ButtonPressEvent -= HandleButtonPressEvent;
topLevelWindows.Remove (w);
if (w == lastFocused)
lastFocused = null;
}
public void Dispose ()
{
disposed = true;
bindings.Dispose ();
lastFocused = null;
}
/// <summary>
/// Disables all commands
/// </summary>
public bool LockAll ()
{
guiLock++;
if (guiLock == 1) {
foreach (ICommandBar toolbar in toolbars)
toolbar.SetEnabled (false);
return true;
} else
return false;
}
/// <summary>
/// Unlocks the command manager
/// </summary>
public bool UnlockAll ()
{
if (guiLock == 1) {
foreach (ICommandBar toolbar in toolbars)
toolbar.SetEnabled (true);
}
if (guiLock > 0)
guiLock--;
return guiLock == 0;
}
/// <summary>
/// When set to true, the toolbar status will be updated periodically while the gui is idle.
/// idle update.
/// </summary>
public bool EnableIdleUpdate {
get { return enableToolbarUpdate; }
set {
if (enableToolbarUpdate != value) {
enableToolbarUpdate = value;
if (value) {
if (toolbars.Count > 0 || visitors.Count > 0)
StartStatusUpdater ();
} else {
StopStatusUpdater ();
}
}
}
}
/// <summary>
/// Registers a new command.
/// </summary>
/// <param name='cmd'>
/// The command.
/// </param>
public void RegisterCommand (Command cmd)
{
KeyBindingService.StoreDefaultBinding (cmd);
KeyBindingService.LoadBinding (cmd);
cmds[cmd.Id] = cmd;
bindings.RegisterCommand (cmd);
}
/// <summary>
/// Unregisters a command.
/// </summary>
/// <param name='cmd'>
/// The command.
/// </param>
public void UnregisterCommand (Command cmd)
{
bindings.UnregisterCommand (cmd);
cmds.Remove (cmd.Id);
}
/// <summary>
/// Loads user defined key bindings.
/// </summary>
public void LoadUserBindings ()
{
foreach (Command cmd in cmds.Values)
KeyBindingService.LoadBinding (cmd);
}
/// <summary>
/// Registers a global command handler.
/// </summary>
/// <param name='handler'>
/// The handler
/// </param>
/// <remarks>
/// Global command handler are added to the end of the command route.
/// </remarks>
public void RegisterGlobalHandler (object handler)
{
globalHandlerChain = CommandTargetChain.AddTarget (globalHandlerChain, handler);
}
/// <summary>
/// Unregisters a global handler.
/// </summary>
/// <param name='handler'>
/// The handler.
/// </param>
public void UnregisterGlobalHandler (object handler)
{
globalHandlerChain = CommandTargetChain.RemoveTarget (globalHandlerChain, handler);
}
/// <summary>
/// Registers a command target visitor.
/// </summary>
/// <param name='visitor'>
/// The visitor.
/// </param>
/// <remarks>
/// Command target visitors can be used to visit the whole active command route
/// to perform custom actions on the objects of the route. The command manager
/// periodically visits the command route. The visit frequency varies, but it
/// is usually at least once a second.
/// </remarks>
public void RegisterCommandTargetVisitor (ICommandTargetVisitor visitor)
{
visitors.Add (visitor);
StartStatusUpdater ();
}
/// <summary>
/// Unregisters a command target visitor.
/// </summary>
/// <param name='visitor'>
/// The visitor.
/// </param>
public void UnregisterCommandTargetVisitor (ICommandTargetVisitor visitor)
{
visitors.Remove (visitor);
}
/// <summary>
/// Gets a registered command.
/// </summary>
/// <returns>
/// The command.
/// </returns>
/// <param name='cmdId'>
/// The identifier of the command
/// </param>
public Command GetCommand (object cmdId)
{
// Include the type name when converting enum members to ids.
cmdId = ToCommandId (cmdId);
Command cmd;
if (cmds.TryGetValue (cmdId, out cmd))
return cmd;
else
return null;
}
/// <summary>
/// Gets all registered commands
/// </summary>
public IEnumerable<Command> GetCommands ()
{
return cmds.Values;
}
/// <summary>
/// Gets an action command.
/// </summary>
/// <returns>
/// The action command.
/// </returns>
/// <param name='cmdId'>
/// The command identifier.
/// </param>
public ActionCommand GetActionCommand (object cmdId)
{
return GetCommand (cmdId) as ActionCommand;
}
/// <summary>
/// Creates a menu bar.
/// </summary>
/// <returns>
/// The menu bar.
/// </returns>
/// <param name='name'>
/// Unused
/// </param>
/// <param name='entrySet'>
/// Entry set with the definition of the commands to be included in the menu bar
/// </param>
public Gtk.MenuBar CreateMenuBar (string name, CommandEntrySet entrySet)
{
Gtk.MenuBar topMenu = new CommandMenuBar (this);
foreach (CommandEntry entry in entrySet) {
Gtk.MenuItem mi = entry.CreateMenuItem (this);
CustomItem ci = mi.Child as CustomItem;
if (ci != null)
ci.SetMenuStyle (topMenu);
topMenu.Append (mi);
}
return topMenu;
}
/* public Gtk.Toolbar CreateToolbar (CommandEntrySet entrySet)
{
return CreateToolbar ("", entrySet);
}
*/
/// <summary>
/// Appends commands to a menu
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry set with the command definitions
/// </param>
/// <param name='menu'>
/// The menu where to add the commands
/// </param>
public Gtk.Menu CreateMenu (CommandEntrySet entrySet, CommandMenu menu)
{
foreach (CommandEntry entry in entrySet) {
Gtk.MenuItem mi = entry.CreateMenuItem (this);
CustomItem ci = mi.Child as CustomItem;
if (ci != null)
ci.SetMenuStyle (menu);
menu.Append (mi);
}
return menu;
}
#if MAC
/// <summary>
/// Creates a menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
public AppKit.NSMenu CreateNSMenu (CommandEntrySet entrySet)
{
return CreateNSMenu (entrySet, new CommandMenu (this));
}
/// <summary>
/// Creates the menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public AppKit.NSMenu CreateNSMenu (CommandEntrySet entrySet, object initialTarget)
{
return CreateNSMenu (entrySet, initialTarget, null);
}
/// <summary>
/// Creates the menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
/// <param name='closeHandler'>
/// EventHandler to be run when the menu closes
/// </param>
public AppKit.NSMenu CreateNSMenu (CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler)
{
return new MonoDevelop.Components.Mac.MDMenu (this, entrySet, CommandSource.ContextMenu, initialTarget, closeHandler);
}
#endif
/// <summary>
/// Creates a menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
public Gtk.Menu CreateMenu (CommandEntrySet entrySet)
{
return CreateMenu (entrySet, new CommandMenu (this));
}
/// <summary>
/// Creates a menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='closeHandler'>
/// EventHandler to be run when the menu closes
/// </param>
public Gtk.Menu CreateMenu (CommandEntrySet entrySet, EventHandler closeHandler)
{
return CreateMenu (entrySet, new CommandMenu (this), closeHandler);
}
/// <summary>
/// Creates the menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public Gtk.Menu CreateMenu (CommandEntrySet entrySet, object initialTarget)
{
return CreateMenu (entrySet, initialTarget, null);
}
/// <summary>
/// Creates the menu.
/// </summary>
/// <returns>
/// The menu.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
/// <param name='closeHandler'>
/// EventHandler to be run when the menu closes
/// </param>
public Gtk.Menu CreateMenu (CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler)
{
var menu = (CommandMenu) CreateMenu (entrySet, new CommandMenu (this));
menu.InitialCommandTarget = initialTarget;
if (closeHandler != null) {
menu.Hidden += closeHandler;
}
return menu;
}
/// <summary>
/// Shows a context menu.
/// </summary>
/// <param name='parent'>
/// Widget for which the context menu is being shown
/// </param>
/// <param name='evt'>
/// Current event
/// </param>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialCommandTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public bool ShowContextMenu (Gtk.Widget parent, Gdk.EventButton evt, CommandEntrySet entrySet,
object initialCommandTarget = null)
{
return ShowContextMenu (parent, evt, entrySet, initialCommandTarget, null);
}
/// <summary>
/// Shows a context menu.
/// </summary>
/// <param name='parent'>
/// Widget for which the context menu is being shown
/// </param>
/// <param name='evt'>
/// Current event
/// </param>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialCommandTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
/// <param name='closeHandler'>
/// An event handler which will be called when the menu closes
/// </param>
public bool ShowContextMenu (Gtk.Widget parent, Gdk.EventButton evt, CommandEntrySet entrySet,
object initialCommandTarget, EventHandler closeHandler)
{
#if MAC
var menu = CreateNSMenu (entrySet, initialCommandTarget, closeHandler);
ContextMenuExtensionsMac.ShowContextMenu (parent, evt, menu);
#else
var menu = CreateMenu (entrySet, closeHandler);
if (menu != null)
ShowContextMenu (parent, evt, menu, initialCommandTarget);
#endif
return true;
}
/// <summary>
/// Shows the context menu.
/// </summary>
/// <returns><c>true</c>, if context menu was shown, <c>false</c> otherwise.</returns>
/// <param name="parent">Widget for which the context menu is shown</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="entrySet">Entry set with the command definitions</param>
/// <param name="initialCommandTarget">Initial command target.</param>
public bool ShowContextMenu (Gtk.Widget parent, int x, int y, CommandEntrySet entrySet,
object initialCommandTarget = null)
{
#if MAC
var menu = CreateNSMenu (entrySet, initialCommandTarget);
ContextMenuExtensionsMac.ShowContextMenu (parent, x, y, menu);
#else
var menu = CreateMenu (entrySet);
if (menu != null)
ShowContextMenu (parent, x, y, menu, initialCommandTarget);
#endif
return true;
}
/// <summary>
/// Shows a context menu.
/// </summary>
/// <param name='parent'>
/// Widget for which the context menu is being shown
/// </param>
/// <param name='evt'>
/// Current event
/// </param>
/// <param name='menu'>
/// Menu to be shown
/// </param>
/// <param name='initialCommandTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public void ShowContextMenu (Gtk.Widget parent, Gdk.EventButton evt, Gtk.Menu menu,
object initialCommandTarget = null)
{
if (menu is CommandMenu) {
((CommandMenu)menu).InitialCommandTarget = initialCommandTarget ?? parent;
}
MonoDevelop.Components.GtkWorkarounds.ShowContextMenu (menu, parent, evt);
}
public void ShowContextMenu (Gtk.Widget parent, int x, int y, Gtk.Menu menu,
object initialCommandTarget = null)
{
if (menu is CommandMenu) {
((CommandMenu)menu).InitialCommandTarget = initialCommandTarget ?? parent;
}
MonoDevelop.Components.GtkWorkarounds.ShowContextMenu (menu, parent, x, y);
}
/// <summary>
/// Creates a toolbar.
/// </summary>
/// <returns>
/// The toolbar.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
public Gtk.Toolbar CreateToolbar (CommandEntrySet entrySet)
{
return CreateToolbar ("", entrySet, null);
}
/// <summary>
/// Creates a toolbar.
/// </summary>
/// <returns>
/// The toolbar.
/// </returns>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public Gtk.Toolbar CreateToolbar (CommandEntrySet entrySet, object initialTarget)
{
return CreateToolbar ("", entrySet, initialTarget);
}
/// <summary>
/// Creates a toolbar.
/// </summary>
/// <returns>
/// The toolbar.
/// </returns>
/// <param name='id'>
/// Identifier of the toolbar
/// </param>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
public Gtk.Toolbar CreateToolbar (string id, CommandEntrySet entrySet)
{
return CreateToolbar (id, entrySet, null);
}
/// <summary>
/// Creates a toolbar.
/// </summary>
/// <returns>
/// The toolbar.
/// </returns>
/// <param name='id'>
/// Identifier of the toolbar
/// </param>
/// <param name='entrySet'>
/// Entry with the command definitions
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public Gtk.Toolbar CreateToolbar (string id, CommandEntrySet entrySet, object initialTarget)
{
CommandToolbar toolbar = new CommandToolbar (this, id, entrySet.Name);
toolbar.InitialCommandTarget = initialTarget;
foreach (CommandEntry entry in entrySet) {
Gtk.ToolItem ti = entry.CreateToolItem (this);
CustomItem ci = ti.Child as CustomItem;
if (ci != null)
ci.SetToolbarStyle (toolbar);
toolbar.Add (ti);
}
ToolbarTracker tt = new ToolbarTracker ();
tt.Track (toolbar);
return toolbar;
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <remarks>
/// This methods tries to execute a command by looking for a handler in the active command route.
/// </remarks>
public bool DispatchCommand (object commandId)
{
return DispatchCommand (commandId, null, null, CommandSource.Unknown);
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <param name='source'>
/// What is causing the command to be dispatched
/// </param>
public bool DispatchCommand (object commandId, CommandSource source)
{
return DispatchCommand (commandId, null, null, source);
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <param name='dataItem'>
/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo.
/// </param>
public bool DispatchCommand (object commandId, object dataItem)
{
return DispatchCommand (commandId, dataItem, null, CommandSource.Unknown);
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <param name='dataItem'>
/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo.
/// </param>
/// <param name='source'>
/// What is causing the command to be dispatched
/// </param>
public bool DispatchCommand (object commandId, object dataItem, CommandSource source)
{
return DispatchCommand (commandId, dataItem, null, source);
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <param name='dataItem'>
/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo.
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
public bool DispatchCommand (object commandId, object dataItem, object initialTarget)
{
return DispatchCommand (commandId, dataItem, initialTarget, CommandSource.Unknown);
}
/// <summary>
/// Dispatches a command.
/// </summary>
/// <returns>
/// True if a handler for the command was found
/// </returns>
/// <param name='commandId'>
/// Identifier of the command
/// </param>
/// <param name='dataItem'>
/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo.
/// </param>
/// <param name='initialTarget'>
/// Initial command route target. The command handler will start looking for command handlers in this object.
/// </param>
/// <param name='source'>
/// What is causing the command to be dispatched
/// </param>
public bool DispatchCommand (object commandId, object dataItem, object initialTarget, CommandSource source)
{
RegisterUserInteraction ();
if (guiLock > 0)
return false;
commandId = CommandManager.ToCommandId (commandId);
List<HandlerCallback> handlers = new List<HandlerCallback> ();
ActionCommand cmd = null;
try {
cmd = GetActionCommand (commandId);
if (cmd == null)
return false;
CurrentCommand = cmd;
CommandTargetRoute targetRoute = new CommandTargetRoute (initialTarget);
object cmdTarget = GetFirstCommandTarget (targetRoute);
CommandInfo info = new CommandInfo (cmd);
while (cmdTarget != null)
{
HandlerTypeInfo typeInfo = GetTypeHandlerInfo (cmdTarget);
bool bypass = false;
CommandUpdaterInfo cui = typeInfo.GetCommandUpdater (commandId);
if (cui != null) {
if (cmd.CommandArray) {
// Make sure that the option is still active
info.ArrayInfo = new CommandArrayInfo (info);
cui.Run (cmdTarget, info.ArrayInfo);
if (!info.ArrayInfo.Bypass) {
if (info.ArrayInfo.FindCommandInfo (dataItem) == null)
return false;
} else
bypass = true;
} else {
info.Bypass = false;
cui.Run (cmdTarget, info);
bypass = info.Bypass;
if (!bypass && (!info.Enabled || !info.Visible))
return false;
}
}
if (!bypass) {
CommandHandlerInfo chi = typeInfo.GetCommandHandler (commandId);
if (chi != null) {
object localTarget = cmdTarget;
if (cmd.CommandArray) {
handlers.Add (delegate {
OnCommandActivating (commandId, info, dataItem, localTarget, source);
var t = DateTime.Now;
try {
chi.Run (localTarget, cmd, dataItem);
} finally {
OnCommandActivated (commandId, info, dataItem, localTarget, source, DateTime.Now - t);
}
});
}
else {
handlers.Add (delegate {
OnCommandActivating (commandId, info, dataItem, localTarget, source);
var t = DateTime.Now;
try {
chi.Run (localTarget, cmd);
} finally {
OnCommandActivated (commandId, info, dataItem, localTarget, source, DateTime.Now - t);
}
});
}
handlerFoundInMulticast = true;
cmdTarget = NextMulticastTarget (targetRoute);
if (cmdTarget == null)
break;
else
continue;
}
}
cmdTarget = GetNextCommandTarget (targetRoute, cmdTarget);
}
if (handlers.Count > 0) {
foreach (HandlerCallback c in handlers)
c ();
UpdateToolbars ();
return true;
}
if (DefaultDispatchCommand (cmd, info, dataItem, cmdTarget, source)) {
UpdateToolbars ();
return true;
}
}
catch (Exception ex) {
string name = (cmd != null && cmd.Text != null && cmd.Text.Length > 0) ? cmd.Text : commandId.ToString ();
name = name.Replace ("_","");
ReportError (commandId, "Error while executing command: " + name, ex);
}
finally {
CurrentCommand = null;
}
return false;
}
bool DefaultDispatchCommand (ActionCommand cmd, CommandInfo info, object dataItem, object target, CommandSource source)
{
DefaultUpdateCommandInfo (cmd, info);
if (cmd.CommandArray) {
//if (info.ArrayInfo.FindCommandInfo (dataItem) == null)
// return false;
}
else if (!info.Enabled || !info.Visible)
return false;
if (cmd.DefaultHandler == null) {
if (cmd.DefaultHandlerType == null)
return false;
cmd.DefaultHandler = (CommandHandler) Activator.CreateInstance (cmd.DefaultHandlerType);
}
OnCommandActivating (cmd.Id, info, dataItem, target, source);
var t = DateTime.Now;
try {
cmd.DefaultHandler.InternalRun (dataItem);
} finally {
OnCommandActivated (cmd.Id, info, dataItem, target, source, DateTime.Now - t);
}
return true;
}
void OnCommandActivating (object commandId, CommandInfo commandInfo, object dataItem, object target, CommandSource source)
{
if (CommandActivating != null)
CommandActivating (this, new CommandActivationEventArgs (commandId, commandInfo, dataItem, target, source));
}
void OnCommandActivated (object commandId, CommandInfo commandInfo, object dataItem, object target, CommandSource source, TimeSpan time)
{
if (CommandActivated != null)
CommandActivated (this, new CommandActivationEventArgs (commandId, commandInfo, dataItem, target, source, time));
}
/// <summary>
/// Raised just before a command is executed
/// </summary>
public event EventHandler<CommandActivationEventArgs> CommandActivating;
/// <summary>
/// Raised just after a command has been executed
/// </summary>
public event EventHandler<CommandActivationEventArgs> CommandActivated;
/// <summary>
/// Retrieves status information about a command by looking for a handler in the active command route.
/// </summary>
/// <returns>
/// The command information.
/// </returns>
/// <param name='commandId'>
/// Identifier of the command.
/// </param>
public CommandInfo GetCommandInfo (object commandId)
{
return GetCommandInfo (commandId, new CommandTargetRoute ());
}
/// <summary>
/// Retrieves status information about a command by looking for a handler in the active command route.
/// </summary>
/// <returns>
/// The command information.
/// </returns>
/// <param name='commandId'>
/// Identifier of the command.
/// </param>
/// <param name='targetRoute'>
/// Command route origin
/// </param>
public CommandInfo GetCommandInfo (object commandId, CommandTargetRoute targetRoute)
{
commandId = CommandManager.ToCommandId (commandId);
ActionCommand cmd = GetActionCommand (commandId);
if (cmd == null)
throw new InvalidOperationException ("Invalid action command id: " + commandId);
NotifyCommandTargetScanStarted ();
CommandInfo info = new CommandInfo (cmd);
try {
bool multiCastEnabled = true;
bool multiCastVisible = false;
CurrentCommand = cmd;
object cmdTarget = GetFirstCommandTarget (targetRoute);
while (cmdTarget != null)
{
HandlerTypeInfo typeInfo = GetTypeHandlerInfo (cmdTarget);
CommandUpdaterInfo cui = typeInfo.GetCommandUpdater (commandId);
bool bypass = false;
bool handlerFound = false;
if (cui != null) {
if (cmd.CommandArray) {
info.ArrayInfo = new CommandArrayInfo (info);
cui.Run (cmdTarget, info.ArrayInfo);
if (!info.ArrayInfo.Bypass) {
if (guiLock > 0)
info.Enabled = false;
handlerFound = true;
}
}
else {
info.Bypass = false;
cui.Run (cmdTarget, info);
if (!info.Bypass) {
if (guiLock > 0)
info.Enabled = false;
handlerFound = true;
}
}
if (!handlerFound)
bypass = true;
}
if (handlerFound) {
handlerFoundInMulticast = true;
if (!info.Enabled || !info.Visible)
multiCastEnabled = false;
if (info.Visible)
multiCastVisible = true;
cmdTarget = NextMulticastTarget (targetRoute);
if (cmdTarget == null) {
if (!multiCastEnabled)
info.Enabled = false;
if (multiCastVisible)
info.Visible = true;
return info;
}
continue;
}
else if (!bypass && typeInfo.GetCommandHandler (commandId) != null) {
info.Enabled = guiLock == 0;
info.Visible = true;
return info;
}
cmdTarget = GetNextCommandTarget (targetRoute, cmdTarget);
}
info.Bypass = false;
DefaultUpdateCommandInfo (cmd, info);
}
catch (Exception ex) {
if (!commandUpdateErrors.Contains (commandId)) {
commandUpdateErrors.Add (commandId);
ReportError (commandId, "Error while updating status of command: " + commandId, ex);
}
info.Enabled = false;
info.Visible = true;
} finally {
NotifyCommandTargetScanFinished ();
CurrentCommand = null;
}
if (guiLock > 0)
info.Enabled = false;
return info;
}
void DefaultUpdateCommandInfo (ActionCommand cmd, CommandInfo info)
{
if (cmd.DefaultHandler == null) {
if (cmd.DefaultHandlerType == null) {
info.Enabled = false;
if (!cmd.DisabledVisible)
info.Visible = false;
return;
}
cmd.DefaultHandler = (CommandHandler) Activator.CreateInstance (cmd.DefaultHandlerType);
}
if (cmd.CommandArray) {
info.ArrayInfo = new CommandArrayInfo (info);
cmd.DefaultHandler.InternalUpdate (info.ArrayInfo);
}
else
cmd.DefaultHandler.InternalUpdate (info);
}
/// <summary>
/// Visits the active command route
/// </summary>
/// <returns>
/// Visitor result
/// </returns>
/// <param name='visitor'>
/// Visitor.
/// </param>
/// <param name='initialTarget'>
/// Initial target (provide null to use the default initial target)
/// </param>
public object VisitCommandTargets (ICommandTargetVisitor visitor, object initialTarget)
{
CommandTargetRoute targetRoute = new CommandTargetRoute (initialTarget);
object cmdTarget = GetFirstCommandTarget (targetRoute);
visitor.Start ();
try {
while (cmdTarget != null)
{
if (visitor.Visit (cmdTarget))
return cmdTarget;
cmdTarget = GetNextCommandTarget (targetRoute, cmdTarget);
}
} catch (Exception ex) {
LoggingService.LogError ("Error while visiting command targets", ex);
} finally {
visitor.End ();
}
return null;
}
internal bool DispatchCommandFromAccel (object commandId, object dataItem, object initialTarget)
{
// Dispatches a command that has been fired by an accelerator.
// The difference from a normal dispatch is that there may
// be several commands bound to the same accelerator, and in
// this case it will execute the one that is enabled.
// If the original key has been modified
// by a CommandUpdate handler, it won't work. That's a limitation,
// but checking all possible commands would be too slow.
Command cmd = GetCommand (commandId);
if (cmd == null)
return false;
string accel = cmd.AccelKey;
KeyBinding binding;
if (accel == null || !KeyBinding.TryParse (accel, out binding))
return DispatchCommand (commandId, dataItem, initialTarget, CommandSource.Keybinding);
List<Command> list = bindings.Commands (binding);
if (list == null || list.Count == 1) {
// The command is not overloaded, so it can be handled normally.
return DispatchCommand (commandId, dataItem, initialTarget, CommandSource.Keybinding);
}
CommandTargetRoute targetChain = new CommandTargetRoute (initialTarget);
// Get the accelerator used to fire the command and make sure it has not changed.
CommandInfo accelInfo = GetCommandInfo (commandId, targetChain);
bool res = DispatchCommand (commandId, accelInfo.DataItem, initialTarget, CommandSource.Keybinding);
// If the accelerator has changed, we can't handle overloading.
if (res || accel != accelInfo.AccelKey)
return res;
// Execution failed. Now try to execute alternate commands
// bound to the same key.
for (int i = 0; i < list.Count; i++) {
if (list[i].Id == commandId) // already handled above.
continue;
CommandInfo cinfo = GetCommandInfo (list[i].Id, targetChain);
if (cinfo.AccelKey != accel) // Key changed by a handler, just ignore the command.
continue;
if (DispatchCommand (list[i].Id, cinfo.DataItem, initialTarget, CommandSource.Keybinding))
return true;
}
return false;
}
internal Gtk.AccelGroup AccelGroup {
get {
if (accelGroup == null) {
accelGroup = new Gtk.AccelGroup ();
}
return accelGroup;
}
}
internal void NotifySelected (CommandInfo cmdInfo)
{
if (CommandSelected != null) {
CommandSelectedEventArgs args = new CommandSelectedEventArgs (cmdInfo);
CommandSelected (this, args);
}
}
internal void NotifyDeselected ()
{
if (CommandDeselected != null)
CommandDeselected (this, EventArgs.Empty);
}
HandlerTypeInfo GetTypeHandlerInfo (object cmdTarget)
{
HandlerTypeInfo typeInfo = (HandlerTypeInfo) handlerInfo [cmdTarget.GetType ()];
if (typeInfo != null) return typeInfo;
Type type = cmdTarget.GetType ();
typeInfo = new HandlerTypeInfo ();
List<CommandHandlerInfo> handlers = new List<CommandHandlerInfo> ();
List<CommandUpdaterInfo> updaters = new List<CommandUpdaterInfo> ();
Type curType = type;
while (curType != null && curType.Assembly != typeof(Gtk.Widget).Assembly && curType.Assembly != typeof(object).Assembly) {
MethodInfo[] methods = curType.GetMethods (BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
foreach (MethodInfo method in methods) {
ICommandUpdateHandler customHandlerChain = null;
ICommandArrayUpdateHandler customArrayHandlerChain = null;
ICommandTargetHandler customTargetHandlerChain = null;
ICommandArrayTargetHandler customArrayTargetHandlerChain = null;
List<CommandHandlerInfo> methodHandlers = new List<CommandHandlerInfo> ();
foreach (object attr in method.GetCustomAttributes (true)) {
if (attr is CommandHandlerAttribute)
methodHandlers.Add (new CommandHandlerInfo (method, (CommandHandlerAttribute) attr));
else if (attr is CommandUpdateHandlerAttribute)
AddUpdater (updaters, method, (CommandUpdateHandlerAttribute) attr);
else {
customHandlerChain = ChainHandler (customHandlerChain, attr);
customArrayHandlerChain = ChainHandler (customArrayHandlerChain, attr);
customTargetHandlerChain = ChainHandler (customTargetHandlerChain, attr);
customArrayTargetHandlerChain = ChainHandler (customArrayTargetHandlerChain, attr);
}
}
foreach (object attr in type.GetCustomAttributes (true)) {
customHandlerChain = ChainHandler (customHandlerChain, attr);
customArrayHandlerChain = ChainHandler (customArrayHandlerChain, attr);
customTargetHandlerChain = ChainHandler (customTargetHandlerChain, attr);
customArrayTargetHandlerChain = ChainHandler (customArrayTargetHandlerChain, attr);
}
if (methodHandlers.Count > 0) {
if (customHandlerChain != null || customArrayHandlerChain != null) {
// There are custom handlers. Create update handlers for all commands
// that the method handles so the custom update handlers can be chained
foreach (CommandHandlerInfo ci in methodHandlers) {
CommandUpdaterInfo c = AddUpdateHandler (updaters, ci.CommandId);
c.AddCustomHandlers (customHandlerChain, customArrayHandlerChain);
}
}
if (customTargetHandlerChain != null || customArrayTargetHandlerChain != null) {
foreach (CommandHandlerInfo ci in methodHandlers)
ci.AddCustomHandlers (customTargetHandlerChain, customArrayTargetHandlerChain);
}
}
handlers.AddRange (methodHandlers);
}
curType = curType.BaseType;
}
if (handlers.Count > 0)
typeInfo.CommandHandlers = handlers.ToArray ();
if (updaters.Count > 0)
typeInfo.CommandUpdaters = updaters.ToArray ();
handlerInfo [type] = typeInfo;
return typeInfo;
}
CommandUpdaterInfo AddUpdateHandler (List<CommandUpdaterInfo> methodUpdaters, object cmdId)
{
foreach (CommandUpdaterInfo ci in methodUpdaters) {
if (ci.CommandId.Equals (cmdId))
return ci;
}
// Not found, it needs to be added
CommandUpdaterInfo cinfo = new CommandUpdaterInfo (cmdId);
methodUpdaters.Add (cinfo);
return cinfo;
}
void AddUpdater (List<CommandUpdaterInfo> methodUpdaters, MethodInfo method, CommandUpdateHandlerAttribute attr)
{
foreach (CommandUpdaterInfo ci in methodUpdaters) {
if (ci.CommandId.Equals (CommandManager.ToCommandId (attr.CommandId))) {
ci.Init (method, attr);
return;
}
}
// Not found, it needs to be added
CommandUpdaterInfo cinfo = new CommandUpdaterInfo (method, attr);
methodUpdaters.Add (cinfo);
}
ICommandArrayUpdateHandler ChainHandler (ICommandArrayUpdateHandler chain, object attr)
{
ICommandArrayUpdateHandler h = attr as ICommandArrayUpdateHandler;
if (h == null) return chain;
h.Next = chain ?? DefaultCommandHandler.Instance;
return h;
}
ICommandUpdateHandler ChainHandler (ICommandUpdateHandler chain, object attr)
{
ICommandUpdateHandler h = attr as ICommandUpdateHandler;
if (h == null) return chain;
h.Next = chain ?? DefaultCommandHandler.Instance;
return h;
}
ICommandTargetHandler ChainHandler (ICommandTargetHandler chain, object attr)
{
ICommandTargetHandler h = attr as ICommandTargetHandler;
if (h == null) return chain;
h.Next = chain ?? DefaultCommandHandler.Instance;
return h;
}
ICommandArrayTargetHandler ChainHandler (ICommandArrayTargetHandler chain, object attr)
{
ICommandArrayTargetHandler h = attr as ICommandArrayTargetHandler;
if (h == null) return chain;
h.Next = chain ?? DefaultCommandHandler.Instance;
return h;
}
Gtk.Window GetCurrentFocusedTopLevelWindow ()
{
foreach (var window in topLevelWindows) {
if (window.HasToplevelFocus)
return window;
}
return rootWidget;
}
object GetFirstCommandTarget (CommandTargetRoute targetRoute)
{
delegatorStack.Clear ();
visitedTargets.Clear ();
handlerFoundInMulticast = false;
object cmdTarget;
if (targetRoute.InitialTarget != null)
cmdTarget = targetRoute.InitialTarget;
else {
cmdTarget = GetActiveWidget (GetCurrentFocusedTopLevelWindow ());
if (cmdTarget == null) {
cmdTarget = globalHandlerChain;
}
}
visitedTargets.Add (cmdTarget);
return cmdTarget;
}
object GetNextCommandTarget (CommandTargetRoute targetRoute, object cmdTarget, bool ignoreDelegator = false)
{
if (cmdTarget is IMultiCastCommandRouter)
cmdTarget = new MultiCastDelegator (this, (IMultiCastCommandRouter)cmdTarget, targetRoute);
if (!ignoreDelegator && cmdTarget is ICommandDelegator) {
if (cmdTarget is ICommandDelegatorRouter)
throw new InvalidOperationException ("A type can't implement both ICommandDelegator and ICommandDelegatorRouter");
object oldCmdTarget = cmdTarget;
cmdTarget = ((ICommandDelegator)oldCmdTarget).GetDelegatedCommandTarget ();
if (cmdTarget != null)
delegatorStack.Push (oldCmdTarget);
else
cmdTarget = GetNextCommandTarget (targetRoute, oldCmdTarget, true);
}
else if (cmdTarget is ICommandDelegatorRouter) {
object oldCmdTarget = cmdTarget;
cmdTarget = ((ICommandDelegatorRouter)oldCmdTarget).GetDelegatedCommandTarget ();
if (cmdTarget != null)
delegatorStack.Push (oldCmdTarget);
else
cmdTarget = ((ICommandDelegatorRouter)oldCmdTarget).GetNextCommandTarget ();
}
else if (cmdTarget is ICommandRouter)
cmdTarget = ((ICommandRouter)cmdTarget).GetNextCommandTarget ();
else if (cmdTarget is Gtk.Widget)
cmdTarget = ((Gtk.Widget)cmdTarget).Parent;
#if MAC
else if (cmdTarget is AppKit.NSView) {
var v = (AppKit.NSView) cmdTarget;
if (v.Superview != null && IsRootGdkQuartzView (v.Superview))
// FIXME: We should get here the GTK parent of the superview. Since there is no api for this
// right now, we rely on it being set by GetActiveWidget()
cmdTarget = null;
else
cmdTarget = v.Superview;
}
#endif
else
cmdTarget = null;
if (cmdTarget == null || !visitedTargets.Add (cmdTarget)) {
if (delegatorStack.Count > 0) {
var del = delegatorStack.Pop ();
if (del is ICommandDelegatorRouter)
cmdTarget = ((ICommandDelegatorRouter)del).GetNextCommandTarget ();
else
cmdTarget = GetNextCommandTarget (targetRoute, del, true);
if (cmdTarget == CommandManager.CommandRouteTerminator)
return null;
if (cmdTarget != null)
return cmdTarget;
}
return globalHandlerChain;
} else
return cmdTarget;
}
internal object NextMulticastTarget (CommandTargetRoute targetRoute)
{
while (delegatorStack.Count > 0) {
MultiCastDelegator del = delegatorStack.Pop () as MultiCastDelegator;
if (del != null) {
object cmdTarget = GetNextCommandTarget (targetRoute, del);
return cmdTarget == globalHandlerChain ? null : cmdTarget;
}
}
return null;
}
Gtk.Window GetActiveWindow (Gtk.Window win)
{
Gtk.Window[] wins = Gtk.Window.ListToplevels ();
bool hasFocus = false;
bool lastFocusedExists = lastFocused == null;
Gtk.Window newFocused = null;
foreach (Gtk.Window w in wins) {
if (w.Visible) {
if (w.HasToplevelFocus) {
hasFocus = true;
newFocused = w;
}
if (w.IsActive && w.Type == Gtk.WindowType.Toplevel && !(w is Gtk.Dialog)) {
if (win == null)
win = w;
}
if (lastFocused == w) {
lastFocusedExists = true;
}
}
}
lastFocused = newFocused;
UpdateAppFocusStatus (hasFocus, lastFocusedExists);
if (win != null && win.IsRealized) {
RegisterTopWindow (win);
return win;
}
else
return null;
}
object GetActiveWidget (Gtk.Window win)
{
win = GetActiveWindow (win);
Gtk.Widget widget = win;
if (win != null) {
#if MAC
var nw = MonoDevelop.Components.Mac.GtkMacInterop.GetNSWindow (win);
if (nw != null) {
var v = nw.FirstResponder as AppKit.NSView;
if (v != null && !IsRootGdkQuartzView (v)) {
if (IsEmbeddedNSView (v))
// FIXME: since there is no way to get the parent GTK widget of an embedded NSView,
// here we return a ICommandDelegatorRouter object that will cause the command route
// to continue with the active gtk widget once the NSView hierarchy has been inspected.
return new NSViewCommandRouter { ActiveView = v, ParentWidget = GetFocusedChild (widget) };
return v;
}
}
#endif
widget = GetFocusedChild (widget);
}
if (widget != lastActiveWidget) {
if (ActiveWidgetChanged != null)
ActiveWidgetChanged (this, new ActiveWidgetEventArgs () { OldActiveWidget = lastActiveWidget, NewActiveWidget = widget });
lastActiveWidget = widget;
}
return widget;
}
Gtk.Widget GetFocusedChild (Gtk.Widget widget)
{
while (widget is Gtk.Container) {
Gtk.Widget child = ((Gtk.Container)widget).FocusChild;
if (child != null)
widget = child;
else
break;
}
return widget;
}
#if MAC
class NSViewCommandRouter: ICommandDelegatorRouter
{
public AppKit.NSView ActiveView;
public Gtk.Widget ParentWidget;
public object GetNextCommandTarget ()
{
return ParentWidget;
}
public object GetDelegatedCommandTarget ()
{
return ActiveView;
}
}
bool IsRootGdkQuartzView (AppKit.NSView view)
{
return view.ToString ().Contains ("GdkQuartzView");
}
bool IsEmbeddedNSView (AppKit.NSView view)
{
if (IsRootGdkQuartzView (view))
return true;
if (view.Superview != null)
return IsEmbeddedNSView (view.Superview);
return false;
}
#endif
bool UpdateStatus ()
{
if (!disposed && toolbarUpdaterRunning)
UpdateToolbars ();
else {
toolbarUpdaterRunning = false;
return false;
}
if (appHasFocus) {
int x, y;
Gdk.Display.Default.GetPointer (out x, out y);
if (x != lastX || y != lastY) {
// Mouse position has changed. The user is interacting.
lastX = x;
lastY = y;
RegisterUserInteraction ();
}
}
uint newWait;
double secs = (DateTime.Now - lastUserInteraction).TotalSeconds;
if (secs < 10)
newWait = 500;
else if (secs < 30)
newWait = 700;
else {
// The application seems to be idle. Stop the status updater and
// start a pasive wait for user interaction
StartWaitingForUserInteraction ();
return false;
}
if (newWait != statusUpdateWait && !waitingForUserInteraction) {
statusUpdateWait = newWait;
GLib.Timeout.Add (statusUpdateWait, new GLib.TimeoutHandler (UpdateStatus));
return false;
}
return true;
}
bool waitingForUserInteraction;
void StartStatusUpdater ()
{
if (enableToolbarUpdate && !toolbarUpdaterRunning && !waitingForUserInteraction) {
lastUserInteraction = DateTime.Now;
// Make sure the first update is done quickly
statusUpdateWait = 1;
GLib.Timeout.Add (statusUpdateWait, new GLib.TimeoutHandler (UpdateStatus));
toolbarUpdaterRunning = true;
}
}
void StopStatusUpdater ()
{
EndWaitingForUserInteraction ();
toolbarUpdaterRunning = false;
}
void StartWaitingForUserInteraction ()
{
// Starts a pasive wait for user interaction.
// To do it, it subscribes the MotionNotify event
// of the main window. This event is unsubscribed when motion is detected
// Keyboard events are already subscribed in RegisterTopWindow
waitingForUserInteraction = true;
toolbarUpdaterRunning = false;
foreach (var win in topLevelWindows)
win.MotionNotifyEvent += HandleWinMotionNotifyEvent;
}
void EndWaitingForUserInteraction ()
{
if (!waitingForUserInteraction)
return;
waitingForUserInteraction = false;
foreach (var win in topLevelWindows)
win.MotionNotifyEvent -= HandleWinMotionNotifyEvent;
StartStatusUpdater ();
}
internal void RegisterUserInteraction ()
{
if (enableToolbarUpdate) {
lastUserInteraction = DateTime.Now;
EndWaitingForUserInteraction ();
}
}
void HandleWinMotionNotifyEvent (object o, Gtk.MotionNotifyEventArgs args)
{
RegisterUserInteraction ();
}
public void RegisterCommandBar (ICommandBar commandBar)
{
if (toolbars.Contains (commandBar))
return;
toolbars.Add (commandBar);
StartStatusUpdater ();
commandBar.SetEnabled (guiLock == 0);
object activeWidget = GetActiveWidget (rootWidget);
commandBar.Update (activeWidget);
}
public void UnregisterCommandBar (ICommandBar commandBar)
{
toolbars.Remove (commandBar);
}
void UpdateToolbars ()
{
// This might get called after the app has exited, e.g. after executing the quit command
// It then queries widgets, which resurrects widget wrappers, which breaks on managed widgets
if (this.disposed)
return;
var activeWidget = GetActiveWidget (rootWidget);
foreach (ICommandBar toolbar in toolbars) {
toolbar.Update (activeWidget);
}
foreach (ICommandTargetVisitor v in visitors)
VisitCommandTargets (v, null);
}
void UpdateAppFocusStatus (bool hasFocus, bool lastFocusedExists)
{
if (hasFocus != appHasFocus) {
// The last focused window has been destroyed. Wait a few ms since another app's window
// may gain focus again
DateTime now = DateTime.Now;
if (focusCheckDelayTimeout == DateTime.MinValue) {
focusCheckDelayTimeout = now.AddMilliseconds (100);
return;
}
if (now < focusCheckDelayTimeout)
return;
focusCheckDelayTimeout = DateTime.MinValue;
appHasFocus = hasFocus;
if (appHasFocus) {
if (ApplicationFocusIn != null)
ApplicationFocusIn (this, EventArgs.Empty);
} else {
if (ApplicationFocusOut != null)
ApplicationFocusOut (this, EventArgs.Empty);
}
} else
focusCheckDelayTimeout = DateTime.MinValue;
}
public void ReportError (object commandId, string message, Exception ex)
{
if (CommandError != null) {
CommandErrorArgs args = new CommandErrorArgs (commandId, message, ex);
CommandError (this, args);
}
}
public static object ToCommandId (object ob)
{
// Include the type name when converting enum members to ids.
if (ob == null)
return null;
else if (ob.GetType ().IsEnum)
return ob.GetType ().FullName + "." + ob;
else
return ob;
}
void NotifyCommandTargetScanStarted ()
{
if (CommandTargetScanStarted != null)
CommandTargetScanStarted (this, EventArgs.Empty);
}
void NotifyCommandTargetScanFinished ()
{
if (CommandTargetScanFinished != null)
CommandTargetScanFinished (this, EventArgs.Empty);
}
internal bool ApplicationHasFocus {
get { return appHasFocus; }
}
/// <summary>
/// Raised when there is an exception while executing or updating the status of a command
/// </summary>
public event CommandErrorHandler CommandError;
/// <summary>
/// Raised when a command is highligted in a menu
/// </summary>
public event EventHandler<CommandSelectedEventArgs> CommandSelected;
/// <summary>
/// Raised when a command is deselected in a manu
/// </summary>
public event EventHandler CommandDeselected;
/// <summary>
/// Fired when the application gets the focus
/// </summary>
internal event EventHandler ApplicationFocusIn;
/// <summary>
/// Fired when the application loses the focus
/// </summary>
internal event EventHandler ApplicationFocusOut;
/// <summary>
/// Fired when the command route scan starts
/// </summary>
public event EventHandler CommandTargetScanStarted;
/// <summary>
/// Fired when the command route scan ends
/// </summary>
public event EventHandler CommandTargetScanFinished;
/// <summary>
/// Fired when a key is pressed
/// </summary>
public event EventHandler<KeyPressArgs> KeyPressed;
/// <summary>
/// Occurs when active widget (the current command target) changes
/// </summary>
public event EventHandler<ActiveWidgetEventArgs> ActiveWidgetChanged;
}
public class ActiveWidgetEventArgs: EventArgs
{
public Gtk.Widget OldActiveWidget { get; internal set; }
public Gtk.Widget NewActiveWidget { get; internal set; }
}
internal class HandlerTypeInfo
{
public CommandHandlerInfo[] CommandHandlers;
public CommandUpdaterInfo[] CommandUpdaters;
public CommandHandlerInfo GetCommandHandler (object commandId)
{
if (CommandHandlers == null) return null;
foreach (CommandHandlerInfo cui in CommandHandlers)
if (cui.CommandId.Equals (commandId))
return cui;
return null;
}
public CommandUpdaterInfo GetCommandUpdater (object commandId)
{
if (CommandUpdaters == null) return null;
foreach (CommandUpdaterInfo cui in CommandUpdaters)
if (cui.CommandId.Equals (commandId))
return cui;
return null;
}
}
internal class CommandMethodInfo
{
public object CommandId;
protected MethodInfo Method;
public CommandMethodInfo (MethodInfo method, CommandMethodAttribute attr)
{
Init (method, attr);
}
protected void Init (MethodInfo method, CommandMethodAttribute attr)
{
// Don't assign the method if there is already one assigned (maybe from a subclass)
if (this.Method == null) {
this.Method = method;
CommandId = CommandManager.ToCommandId (attr.CommandId);
}
}
public CommandMethodInfo (object commandId)
{
CommandId = CommandManager.ToCommandId (commandId);
}
}
internal class CommandHandlerInfo: CommandMethodInfo
{
ICommandTargetHandler customHandlerChain;
ICommandArrayTargetHandler customArrayHandlerChain;
public CommandHandlerInfo (MethodInfo method, CommandHandlerAttribute attr): base (method, attr)
{
ParameterInfo[] pars = method.GetParameters ();
if (pars.Length > 1)
throw new InvalidOperationException ("Invalid signature for command handler: " + method.DeclaringType + "." + method.Name + "()");
}
public void Run (object cmdTarget, Command cmd)
{
if (customHandlerChain != null) {
cmd.HandlerData = Method;
customHandlerChain.Run (cmdTarget, cmd);
}
else
Method.Invoke (cmdTarget, null);
}
public void Run (object cmdTarget, Command cmd, object dataItem)
{
if (customArrayHandlerChain != null) {
cmd.HandlerData = Method;
customArrayHandlerChain.Run (cmdTarget, cmd, dataItem);
}
else
Method.Invoke (cmdTarget, new object[] {dataItem});
}
public void AddCustomHandlers (ICommandTargetHandler handlerChain, ICommandArrayTargetHandler arrayHandlerChain)
{
this.customHandlerChain = handlerChain;
this.customArrayHandlerChain = arrayHandlerChain;
}
}
internal class CommandUpdaterInfo: CommandMethodInfo
{
ICommandUpdateHandler customHandlerChain;
ICommandArrayUpdateHandler customArrayHandlerChain;
bool isArray;
public CommandUpdaterInfo (object commandId): base (commandId)
{
}
public CommandUpdaterInfo (MethodInfo method, CommandUpdateHandlerAttribute attr): base (method, attr)
{
Init (method, attr);
}
public void Init (MethodInfo method, CommandUpdateHandlerAttribute attr)
{
base.Init (method, attr);
ParameterInfo[] pars = method.GetParameters ();
if (pars.Length == 1) {
Type t = pars[0].ParameterType;
if (t == typeof(CommandArrayInfo)) {
isArray = true;
return;
} else if (t == typeof(CommandInfo))
return;
}
throw new InvalidOperationException ("Invalid signature for command update handler: " + method.DeclaringType + "." + method.Name + "()");
}
public void AddCustomHandlers (ICommandUpdateHandler handlerChain, ICommandArrayUpdateHandler arrayHandlerChain)
{
this.customHandlerChain = handlerChain;
this.customArrayHandlerChain = arrayHandlerChain;
}
public void Run (object cmdTarget, CommandInfo info)
{
if (customHandlerChain != null) {
info.UpdateHandlerData = Method;
DateTime t = DateTime.Now;
customHandlerChain.CommandUpdate (cmdTarget, info);
var time = DateTime.Now - t;
if (time.TotalMilliseconds > CommandManager.SlowCommandWarningTime)
LoggingService.LogWarning ("Slow command update ({0}ms): Command:{1}, CustomUpdater:{2}", (int)time.TotalMilliseconds, CommandId, customHandlerChain);
} else {
if (Method == null)
throw new InvalidOperationException ("Invalid custom update handler. An implementation of ICommandUpdateHandler was expected.");
if (isArray)
throw new InvalidOperationException ("Invalid signature for command update handler: " + Method.DeclaringType + "." + Method.Name + "()");
DateTime t = DateTime.Now;
Method.Invoke (cmdTarget, new object[] {info} );
var time = DateTime.Now - t;
if (time.TotalMilliseconds > CommandManager.SlowCommandWarningTime)
LoggingService.LogWarning ("Slow command update ({0}ms): Command:{1}, Method:{2}", (int)time.TotalMilliseconds, CommandId, Method.DeclaringType + "." + Method.Name);
}
}
public void Run (object cmdTarget, CommandArrayInfo info)
{
if (customArrayHandlerChain != null) {
info.UpdateHandlerData = Method;
customArrayHandlerChain.CommandUpdate (cmdTarget, info);
} else {
if (Method == null)
throw new InvalidOperationException ("Invalid custom update handler. An implementation of ICommandArrayUpdateHandler was expected.");
if (!isArray)
throw new InvalidOperationException ("Invalid signature for command update handler: " + Method.DeclaringType + "." + Method.Name + "()");
DateTime t = DateTime.Now;
Method.Invoke (cmdTarget, new object[] {info} );
var time = DateTime.Now - t;
if (time.TotalMilliseconds > CommandManager.SlowCommandWarningTime)
LoggingService.LogWarning ("Slow command update ({0}ms): Command:{1}, Method:{2}", (int)time.TotalMilliseconds, CommandId, Method.DeclaringType + "." + Method.Name);
}
}
}
class DefaultCommandHandler: ICommandUpdateHandler, ICommandArrayUpdateHandler, ICommandTargetHandler, ICommandArrayTargetHandler
{
public static DefaultCommandHandler Instance = new DefaultCommandHandler ();
public void CommandUpdate (object target, CommandInfo info)
{
MethodInfo mi = (MethodInfo) info.UpdateHandlerData;
if (mi != null)
mi.Invoke (target, new object[] {info} );
}
public void CommandUpdate (object target, CommandArrayInfo info)
{
MethodInfo mi = (MethodInfo) info.UpdateHandlerData;
if (mi != null)
mi.Invoke (target, new object[] {info} );
}
public void Run (object target, Command cmd)
{
MethodInfo mi = (MethodInfo) cmd.HandlerData;
if (mi != null)
mi.Invoke (target, new object[0] );
}
public void Run (object target, Command cmd, object data)
{
MethodInfo mi = (MethodInfo) cmd.HandlerData;
if (mi != null)
mi.Invoke (target, new object[] {data} );
}
ICommandArrayTargetHandler ICommandArrayTargetHandler.Next {
get {
return null;
}
set {
}
}
ICommandTargetHandler ICommandTargetHandler.Next {
get {
return null;
}
set {
}
}
ICommandArrayUpdateHandler ICommandArrayUpdateHandler.Next {
get {
// Last one in the chain
return null;
}
set {
}
}
public ICommandUpdateHandler Next {
get {
// Last one in the chain
return null;
}
set {
}
}
}
internal class ToolbarTracker
{
Gtk.IconSize lastSize;
public void Track (Gtk.Toolbar toolbar)
{
lastSize = toolbar.IconSize;
toolbar.AddNotification ("icon-size", IconSizeChanged);
toolbar.OrientationChanged += HandleToolbarOrientationChanged;
toolbar.StyleChanged += HandleToolbarStyleChanged;
toolbar.Destroyed += delegate {
toolbar.StyleChanged -= HandleToolbarStyleChanged;
toolbar.OrientationChanged -= HandleToolbarOrientationChanged;
toolbar.RemoveNotification ("icon-size", IconSizeChanged);
};
}
void HandleToolbarStyleChanged (object o, Gtk.StyleChangedArgs args)
{
Gtk.Toolbar t = (Gtk.Toolbar) o;
if (lastSize != t.IconSize)
UpdateCustomItems (t);
}
void HandleToolbarOrientationChanged (object o, Gtk.OrientationChangedArgs args)
{
Gtk.Toolbar t = (Gtk.Toolbar) o;
if (lastSize != t.IconSize)
UpdateCustomItems (t);
}
void IconSizeChanged (object o, GLib.NotifyArgs args)
{
this.lastSize = ((Gtk.Toolbar) o).IconSize;
UpdateCustomItems ((Gtk.Toolbar) o);
}
void UpdateCustomItems (Gtk.Toolbar t)
{
foreach (Gtk.ToolItem ti in t.Children) {
CustomItem ci = ti.Child as CustomItem;
if (ci != null)
ci.SetToolbarStyle (t);
}
}
}
class MultiCastDelegator: ICommandDelegatorRouter
{
IEnumerator enumerator;
object nextTarget;
CommandManager manager;
bool done;
CommandTargetRoute route;
public MultiCastDelegator (CommandManager manager, IMultiCastCommandRouter mcr, CommandTargetRoute route)
{
this.manager = manager;
enumerator = mcr.GetCommandTargets ().GetEnumerator ();
this.route = route;
}
public object GetNextCommandTarget ()
{
if (nextTarget != null)
return this;
else {
if (manager.handlerFoundInMulticast)
return manager.NextMulticastTarget (route);
else
return null;
}
}
public object GetDelegatedCommandTarget ()
{
object currentTarget;
if (done)
return null;
if (nextTarget != null) {
currentTarget = nextTarget;
nextTarget = null;
} else {
if (enumerator.MoveNext ())
currentTarget = enumerator.Current;
else
return null;
}
if (enumerator.MoveNext ())
nextTarget = enumerator.Current;
else {
done = true;
nextTarget = null;
}
return currentTarget;
}
}
class CommandTargetChain: ICommandDelegatorRouter
{
object target;
internal CommandTargetChain Next;
public CommandTargetChain (object target)
{
this.target = target;
}
public object GetNextCommandTarget ()
{
if (Next == null)
return CommandManager.CommandRouteTerminator;
else
return Next;
}
public object GetDelegatedCommandTarget ()
{
return target;
}
public static CommandTargetChain RemoveTarget (CommandTargetChain chain, object target)
{
if (chain == null)
return null;
if (chain.target == target)
return chain.Next;
else if (chain.Next != null)
chain.Next = CommandTargetChain.RemoveTarget (chain.Next, target);
return chain;
}
public static CommandTargetChain AddTarget (CommandTargetChain chain, object target)
{
if (chain == null)
return new CommandTargetChain (target);
else {
chain.Next = AddTarget (chain.Next, target);
return chain;
}
}
}
delegate void HandlerCallback ();
public class CommandActivationEventArgs : EventArgs
{
public CommandActivationEventArgs (object commandId, CommandInfo commandInfo, object dataItem, object target, CommandSource source, TimeSpan executionTime = default(TimeSpan))
{
this.CommandId = commandId;
this.CommandInfo = commandInfo;
this.Target = target;
this.Source = source;
this.DataItem = dataItem;
this.ExecutionTime = executionTime;
}
public object CommandId { get; private set; }
public CommandInfo CommandInfo { get; private set; }
public object Target { get; private set; }
public CommandSource Source { get; private set; }
public object DataItem { get; private set; }
public TimeSpan ExecutionTime { get; private set; }
}
public enum CommandSource
{
MainMenu,
ContextMenu,
MainToolbar,
Keybinding,
Unknown,
MacroPlayback,
WelcomePage
}
public class CommandTargetRoute
{
List<object> targets = new List<object> ();
public CommandTargetRoute ()
{
}
public CommandTargetRoute (object initialTarget)
{
InitialTarget = initialTarget;
}
public object InitialTarget { get; internal set; }
internal bool Initialized { get; set; }
internal void AddTarget (object obj)
{
targets.Add (obj);
}
internal IEnumerable<object> Targets {
get { return targets; }
}
}
public class KeyPressArgs: EventArgs
{
public Gdk.Key Key { get; internal set; }
public Gdk.ModifierType Modifiers { get; internal set; }
}
public class KeyBindingFailedEventArgs : EventArgs
{
public string Message { get; private set; }
public KeyBindingFailedEventArgs (string message)
{
Message = message;
}
}
}
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