mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2024-06-26 16:46:01 +02:00
e48e6e0380
Added no inlining attribute for methods with Assembly.GetCallingAssembly() so caller assembly is correct if jit want to inline. See https://github.com/picoe/Eto/pull/2049.
445 lines
14 KiB
C#
445 lines
14 KiB
C#
// Builder.cs - customizations to Gtk.Builder
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//
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// Authors: Stephane Delcroix <stephane@delcroix.org>
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// The biggest part of this code is adapted from glade#, by
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// Ricardo Fernández Pascual <ric@users.sourceforge.net>
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// Rachel Hestilow <hestilow@ximian.com>
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//
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// Copyright (c) 2002 Ricardo Fernández Pascual
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// Copyright (c) 2003 Rachel Hestilow
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// Copyright (c) 2008 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace Gtk {
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using System;
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using System.IO;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Text;
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public partial class Builder {
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[System.Serializable]
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public class HandlerNotFoundException : SystemException
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{
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string handler_name;
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string signal_name;
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System.Reflection.EventInfo evnt;
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Type delegate_type;
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public HandlerNotFoundException (string handler_name, string signal_name,
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System.Reflection.EventInfo evnt, Type delegate_type)
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: this (handler_name, signal_name, evnt, delegate_type, null)
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{
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}
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public HandlerNotFoundException (string handler_name, string signal_name,
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System.Reflection.EventInfo evnt, Type delegate_type, Exception inner)
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: base ("No handler " + handler_name + " found for signal " + signal_name,
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inner)
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{
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this.handler_name = handler_name;
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this.signal_name = signal_name;
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this.evnt = evnt;
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this.delegate_type = delegate_type;
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}
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public HandlerNotFoundException (string message, string handler_name, string signal_name,
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System.Reflection.EventInfo evnt, Type delegate_type)
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: base ((message != null) ? message : "No handler " + handler_name + " found for signal " + signal_name,
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null)
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{
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this.handler_name = handler_name;
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this.signal_name = signal_name;
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this.evnt = evnt;
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this.delegate_type = delegate_type;
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}
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protected HandlerNotFoundException (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
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: base (info, context)
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{
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handler_name = info.GetString ("HandlerName");
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signal_name = info.GetString ("SignalName");
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evnt = info.GetValue ("Event", typeof (System.Reflection.EventInfo)) as System.Reflection.EventInfo;
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delegate_type = info.GetValue ("DelegateType", typeof (Type)) as Type;
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}
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public string HandlerName
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{
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get {
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return handler_name;
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}
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}
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public string SignalName
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{
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get {
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return signal_name;
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}
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}
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public System.Reflection.EventInfo Event
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{
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get {
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return evnt;
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}
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}
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public Type DelegateType
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{
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get {
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return delegate_type;
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}
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}
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public override void GetObjectData (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
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{
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base.GetObjectData (info, context);
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info.AddValue ("HandlerName", handler_name);
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info.AddValue ("SignalName", signal_name);
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info.AddValue ("Event", evnt);
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info.AddValue ("DelegateType", delegate_type);
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}
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}
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[AttributeUsage (AttributeTargets.Field)]
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public class ObjectAttribute : Attribute
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{
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private string name;
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private bool specified;
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public ObjectAttribute (string name)
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{
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specified = true;
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this.name = name;
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}
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public ObjectAttribute ()
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{
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specified = false;
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}
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public string Name
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{
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get { return name; }
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}
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public bool Specified
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{
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get { return specified; }
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}
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}
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public IntPtr GetRawObject(string name) {
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
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IntPtr raw_ret = gtk_builder_get_object(Handle, native_name);
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GLib.Marshaller.Free (native_name);
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return raw_ret;
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}
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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delegate IntPtr d_g_object_ref(IntPtr raw);
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static d_g_object_ref g_object_ref = FuncLoader.LoadFunction<d_g_object_ref>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GObject), "g_object_ref"));
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public IntPtr GetRawOwnedObject(string name) {
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IntPtr raw_ret = GetRawObject (name);
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g_object_ref (raw_ret);
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return raw_ret;
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}
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public Builder (System.IO.Stream s) : this (s, null)
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{
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}
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public Builder (System.IO.Stream s, string translation_domain)
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{
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if (s == null)
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throw new ArgumentNullException ("s");
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AddFromStream (s);
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TranslationDomain = translation_domain;
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}
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[MethodImpl(MethodImplOptions.NoInlining)]
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public Builder (string resource_name) : this (Assembly.GetCallingAssembly (), resource_name, null)
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{
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}
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[MethodImpl(MethodImplOptions.NoInlining)]
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public Builder (string resource_name, string translation_domain)
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: this (Assembly.GetCallingAssembly (), resource_name, translation_domain)
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{
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}
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[MethodImpl(MethodImplOptions.NoInlining)]
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public Builder (Assembly assembly, string resource_name, string translation_domain) : this ()
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{
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if (GetType() != typeof (Builder))
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throw new InvalidOperationException ("Cannot chain to this constructor from subclasses.");
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if (assembly == null)
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assembly = Assembly.GetCallingAssembly ();
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System.IO.Stream s = assembly.GetManifestResourceStream (resource_name);
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if (s == null)
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throw new ArgumentException ("Cannot get resource file '" + resource_name + "'",
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"resource_name");
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AddFromStream (s);
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TranslationDomain = translation_domain;
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}
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public void Autoconnect (object handler)
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{
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BindFields (handler);
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(new SignalConnector (this, handler)).ConnectSignals ();
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}
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public void Autoconnect (Type handler_class)
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{
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BindFields (handler_class);
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(new SignalConnector (this, handler_class)).ConnectSignals ();
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}
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class SignalConnector
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{
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Builder builder;
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Type handler_type;
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object handler;
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public SignalConnector (Builder builder, object handler)
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{
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this.builder = builder;
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this.handler = handler;
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handler_type = handler.GetType ();
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}
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public SignalConnector (Builder builder, Type handler_type)
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{
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this.builder = builder;
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this.handler = null;
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this.handler_type = handler_type;
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}
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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delegate void d_gtk_builder_connect_signals_full(IntPtr raw, GtkSharp.BuilderConnectFuncNative func, IntPtr user_data);
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static d_gtk_builder_connect_signals_full gtk_builder_connect_signals_full = FuncLoader.LoadFunction<d_gtk_builder_connect_signals_full>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Gtk), "gtk_builder_connect_signals_full"));
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public void ConnectSignals() {
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GtkSharp.BuilderConnectFuncWrapper func_wrapper = new GtkSharp.BuilderConnectFuncWrapper (new BuilderConnectFunc (ConnectFunc));
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gtk_builder_connect_signals_full(builder.Handle, func_wrapper.NativeDelegate, IntPtr.Zero);
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}
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public void ConnectFunc (Builder builder, GLib.Object objekt, string signal_name, string handler_name, GLib.Object connect_object, GLib.ConnectFlags flags)
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{
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/* search for the event to connect */
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System.Reflection.MemberInfo[] evnts = objekt.GetType ().
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FindMembers (System.Reflection.MemberTypes.Event,
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System.Reflection.BindingFlags.Instance
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| System.Reflection.BindingFlags.Static
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| System.Reflection.BindingFlags.Public
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| System.Reflection.BindingFlags.NonPublic,
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new System.Reflection.MemberFilter (SignalFilter), signal_name);
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foreach (System.Reflection.EventInfo ei in evnts) {
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bool connected = false;
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System.Reflection.MethodInfo add = ei.GetAddMethod ();
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System.Reflection.ParameterInfo[] addpi = add.GetParameters ();
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if (addpi.Length == 1) { /* this should be always true, unless there's something broken */
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Type delegate_type = addpi[0].ParameterType;
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/* look for an instance method */
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if (connect_object != null || handler != null)
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try {
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Delegate d = Delegate.CreateDelegate (delegate_type, connect_object != null ? connect_object : handler, handler_name);
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add.Invoke (objekt, new object[] { d } );
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connected = true;
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} catch (ArgumentException) { /* ignore if there is not such instance method */
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}
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/* look for a static method if no instance method has been found */
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if (!connected && handler_type != null)
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try {
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Delegate d = Delegate.CreateDelegate (delegate_type, handler_type, handler_name);
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add.Invoke (objekt, new object[] { d } );
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connected = true;
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} catch (ArgumentException) { /* ignore if there is not such static method */
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}
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if (!connected) {
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string msg = ExplainError (ei.Name, delegate_type, handler_type, handler_name);
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throw new HandlerNotFoundException (msg, handler_name, signal_name, ei, delegate_type);
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}
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}
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}
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}
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static bool SignalFilter (System.Reflection.MemberInfo m, object filterCriteria)
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{
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string signame = (filterCriteria as string);
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object[] attrs = m.GetCustomAttributes (typeof (GLib.SignalAttribute), false);
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if (attrs.Length > 0)
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{
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foreach (GLib.SignalAttribute a in attrs)
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{
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if (signame == a.CName)
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{
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return true;
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}
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}
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return false;
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}
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else
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{
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/* this tries to match the names when no attibutes are present.
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It is only a fallback. */
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signame = signame.ToLower ().Replace ("_", "");
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string evname = m.Name.ToLower ();
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return signame == evname;
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}
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}
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static string GetSignature (System.Reflection.MethodInfo method)
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{
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if (method == null)
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return null;
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System.Reflection.ParameterInfo [] parameters = method.GetParameters ();
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System.Text.StringBuilder sb = new System.Text.StringBuilder ();
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sb.Append ('(');
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foreach (System.Reflection.ParameterInfo info in parameters) {
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sb.Append (info.ParameterType.ToString ());
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sb.Append (',');
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}
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if (sb.Length != 0)
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sb.Length--;
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sb.Append (')');
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return sb.ToString ();
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}
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static string GetSignature (Type delegate_type)
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{
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System.Reflection.MethodInfo method = delegate_type.GetMethod ("Invoke");
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return GetSignature (method);
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}
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const System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.NonPublic |
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System.Reflection.BindingFlags.Public |
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System.Reflection.BindingFlags.Static |
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System.Reflection.BindingFlags.Instance;
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static string GetSignature (Type klass, string method_name)
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{
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try {
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System.Reflection.MethodInfo method = klass.GetMethod (method_name, flags);
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return GetSignature (method);
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} catch {
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// May be more than one method with that name and none matches
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return null;
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}
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}
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static string ExplainError (string event_name, Type deleg, Type klass, string method)
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{
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if (deleg == null || klass == null || method == null)
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return null;
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System.Text.StringBuilder sb = new System.Text.StringBuilder ();
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string expected = GetSignature (deleg);
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string actual = GetSignature (klass, method);
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if (actual == null)
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return null;
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sb.AppendFormat ("The handler for the event {0} should take '{1}', " +
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"but the signature of the provided handler ('{2}') is '{3}'\n",
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event_name, expected, method, actual);
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return sb.ToString ();
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}
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}
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void AddFromStream (Stream stream)
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{
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var size = (int)stream.Length;
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var buffer = new byte[size];
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stream.Read (buffer, 0, size);
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stream.Close ();
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// If buffer contains a BOM, omit it while reading, otherwise AddFromString(text) crashes
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var offset = 0;
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if (size >= 3 && buffer [0] == 0xEF && buffer [1] == 0xBB && buffer [2] == 0xBF) {
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offset = 3;
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}
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var text = Encoding.UTF8.GetString (buffer, offset, size - offset);
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AddFromString (text);
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}
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void BindFields (object target)
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{
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BindFields (target, target.GetType ());
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}
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void BindFields (Type type)
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{
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BindFields (null, type);
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}
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void BindFields (object target, Type type)
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{
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System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.DeclaredOnly;
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if (target != null)
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flags |= System.Reflection.BindingFlags.Instance;
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else
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flags |= System.Reflection.BindingFlags.Static;
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do {
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System.Reflection.FieldInfo[] fields = type.GetFields (flags);
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if (fields == null)
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return;
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foreach (System.Reflection.FieldInfo field in fields)
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{
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object[] attrs = field.GetCustomAttributes (typeof (ObjectAttribute), false);
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if (attrs == null || attrs.Length == 0)
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continue;
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// The widget to field binding must be 1:1, so only check
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// the first attribute.
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ObjectAttribute attr = (ObjectAttribute) attrs[0];
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GLib.Object gobject;
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if (attr.Specified)
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gobject = GetObject (attr.Name);
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else
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gobject = GetObject (field.Name);
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if (gobject != null)
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try {
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field.SetValue (target, gobject, flags, null, null);
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} catch (Exception e) {
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Console.WriteLine ("Unable to set value for field " + field.Name);
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throw e;
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}
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}
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type = type.BaseType;
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}
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while (type != typeof(object) && type != null);
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}
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}
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}
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