mirror of
https://github.com/Ryujinx/GtkSharp.git
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b40365eafb
* glade/XML.custom: due to a recent Mono fix (bug #322762), Type.GetFields does not return private fields from base classes anymore, so the BindFields now has to go through the class hierarchy to get all fields. svn path=/trunk/gtk-sharp/; revision=93742
437 lines
14 KiB
Plaintext
437 lines
14 KiB
Plaintext
// WARNING: This file is in UTF8 format due to the use of ã
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// XML.custom
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//
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// Author: Ricardo Fernández Pascual <ric@users.sourceforge.net>
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//
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// Copyright (c) 2002 Ricardo Fernández Pascual
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//
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// Field binding code by Rachel Hestilow <hestilow@ximian.com>
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// Copyright (c) 2003 Rachel Hestilow
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//
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// This code is inserted after the automatically generated code.
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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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// keep this around so it doesn't get GC'd
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static GladeSharp.XMLCustomWidgetHandlerWrapper callback_wrapper = null;
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[DllImport("libglade-2.0-0.dll")]
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static extern void glade_set_custom_handler (GladeSharp.XMLCustomWidgetHandlerNative handler, IntPtr user_data);
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public static Glade.XMLCustomWidgetHandler CustomHandler {
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set {
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callback_wrapper = new GladeSharp.XMLCustomWidgetHandlerWrapper (value);
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glade_set_custom_handler(callback_wrapper.NativeDelegate, IntPtr.Zero);
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}
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}
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[Obsolete ("Replaced by CustomHandler property.")]
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static public void SetCustomHandler (Glade.XMLCustomWidgetHandler handler)
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{
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CustomHandler = handler;
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}
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[DllImport("gladesharpglue-2")]
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static extern IntPtr gtksharp_glade_xml_get_filename (IntPtr raw);
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public string Filename {
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get {
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string ret;
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IntPtr ptr = gtksharp_glade_xml_get_filename (Handle);
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if (ptr == IntPtr.Zero)
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{
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// from resource
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ret = System.Reflection.Assembly.GetCallingAssembly ().Location;
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}
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else
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{
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ret = GLib.Marshaller.Utf8PtrToString (ptr);
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}
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return ret;
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}
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}
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public Gtk.Widget this [string name] {
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get {
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return GetWidget (name);
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}
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}
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[DllImport("libglade-2.0-0.dll")]
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static extern IntPtr glade_get_widget_name (IntPtr widget);
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static public string GetWidgetName (Gtk.Widget w) {
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string ret;
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IntPtr ptr = glade_get_widget_name (w.Handle);
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if (ptr == IntPtr.Zero)
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ret = "";
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else
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ret = GLib.Marshaller.Utf8PtrToString (ptr);
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return ret;
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}
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[DllImport("libglade-2.0-0.dll")]
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static extern IntPtr glade_get_widget_tree (IntPtr widget);
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static public Glade.XML GetWidgetTree (Gtk.Widget w) {
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IntPtr ret_raw = glade_get_widget_tree (w.Handle);
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Glade.XML ret = GLib.Object.GetObject (ret_raw, false) as Glade.XML;
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return ret;
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}
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/* a constructor that reads the XML from a Stream */
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[DllImport("libglade-2.0-0.dll")]
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static extern IntPtr glade_xml_new_from_buffer(byte[] buffer, int size, IntPtr root, IntPtr domain);
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public XML (System.IO.Stream s, string root, string domain) : base (IntPtr.Zero)
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{
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if (GetType() != typeof (XML))
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throw new InvalidOperationException ("Can't chain to this constructor from subclasses.");
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if (s == null)
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throw new ArgumentNullException ("s");
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int size = (int) s.Length;
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byte[] buffer = new byte[size];
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s.Read (buffer, 0, size);
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IntPtr nroot = GLib.Marshaller.StringToPtrGStrdup (root);
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IntPtr ndomain = GLib.Marshaller.StringToPtrGStrdup (domain);
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Raw = glade_xml_new_from_buffer(buffer, size, nroot, ndomain);
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GLib.Marshaller.Free (nroot);
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GLib.Marshaller.Free (ndomain);
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}
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public XML (string resource_name, string root) : this (System.Reflection.Assembly.GetEntryAssembly (), resource_name, root, null)
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{
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}
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public XML (System.Reflection.Assembly assembly, string resource_name, string root, string domain) : base (IntPtr.Zero)
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{
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if (GetType() != typeof (XML))
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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 = System.Reflection.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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int size = (int) s.Length;
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byte[] buffer = new byte[size];
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s.Read (buffer, 0, size);
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s.Close ();
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IntPtr nroot = GLib.Marshaller.StringToPtrGStrdup (root);
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IntPtr ndomain = GLib.Marshaller.StringToPtrGStrdup (domain);
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Raw = glade_xml_new_from_buffer(buffer, size, nroot, ndomain);
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GLib.Marshaller.Free (nroot);
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GLib.Marshaller.Free (ndomain);
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}
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/* signal autoconnection using reflection */
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public void Autoconnect (object handler)
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{
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BindFields (handler);
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SignalConnector sc = new SignalConnector (this, handler);
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sc.Autoconnect ();
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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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SignalConnector sc = new SignalConnector (this, handler_class);
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sc.Autoconnect ();
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}
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class SignalConnector
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{
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/* the Glade.XML object whose signals we want to connect */
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XML gxml;
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/* the object to look for handlers */
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object handler_object;
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/* the type to look for handlers if no object has been specified */
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Type handler_type;
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public SignalConnector (XML gxml, object handler)
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{
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this.gxml = gxml;
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this.handler_object = handler;
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this.handler_type = handler.GetType ();
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}
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public SignalConnector (XML gxml, Type type)
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{
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this.gxml = gxml;
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this.handler_object = null;
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this.handler_type = type;
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}
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[GLib.CDeclCallback]
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delegate void RawXMLConnectFunc (IntPtr handler_name, IntPtr objekt,
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IntPtr signal_name, IntPtr signal_data,
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IntPtr connect_object, int after, IntPtr user_data);
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[DllImport("libglade-2.0-0.dll")]
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static extern void glade_xml_signal_autoconnect_full (IntPtr raw, RawXMLConnectFunc func,
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IntPtr user_data);
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public void Autoconnect () {
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RawXMLConnectFunc cf = new RawXMLConnectFunc (ConnectFunc);
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glade_xml_signal_autoconnect_full (gxml.Handle, cf, IntPtr.Zero);
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}
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void ConnectFunc (IntPtr native_handler_name, IntPtr objekt_ptr,
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IntPtr native_signal_name, IntPtr native_signal_data,
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IntPtr connect_object_ptr, int after, IntPtr user_data) {
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GLib.Object objekt = GLib.Object.GetObject (objekt_ptr, false);
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string handler_name = GLib.Marshaller.Utf8PtrToString (native_handler_name);
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string signal_name = GLib.Marshaller.Utf8PtrToString (native_signal_name);
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//string signal_data = GLib.Marshaller.Utf8PtrToString (native_signal_data);
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/* if an connect_object_ptr is provided, use that as handler */
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object connect_object =
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connect_object_ptr == IntPtr.Zero
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? handler_object
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: GLib.Object.GetObject (connect_object_ptr, false);
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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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signalFilter, signal_name);
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foreach (System.Reflection.EventInfo ei in evnts)
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{
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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)
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{ /* 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) try
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{
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Delegate d = Delegate.CreateDelegate
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(delegate_type, connect_object, handler_name);
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add.Invoke (objekt, new object[] { d } );
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connected = true;
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}
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catch (ArgumentException)
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{
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/* 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) try
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{
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Delegate d = Delegate.CreateDelegate
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(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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}
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catch (ArgumentException)
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{
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/* ignore if there is not such static method */
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}
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if (!connected)
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{
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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 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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System.Reflection.MemberFilter signalFilter = new System.Reflection.MemberFilter (SignalFilter);
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/* matches events to GLib signal names */
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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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}
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private 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 (WidgetAttribute), 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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WidgetAttribute attr = (WidgetAttribute) attrs[0];
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Gtk.Widget widget;
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if (attr.Specified)
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widget = GetWidget (attr.Name);
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else
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widget = GetWidget (field.Name);
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if (widget != null)
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try {
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field.SetValue (target, widget, 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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public void BindFields (object target)
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{
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BindFields (target, target.GetType ());
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}
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public void BindFields (Type type)
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{
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BindFields (null, type);
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}
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public static Glade.XML FromStream (System.IO.Stream stream, string root, string domain)
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{
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return new Glade.XML (stream, root, domain);
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}
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public static Glade.XML FromAssembly (
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System.Reflection.Assembly assembly, string resource_name, string root, string domain)
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{
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return new Glade.XML (assembly, resource_name, root, domain);
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}
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public static Glade.XML FromAssembly (string resource_name, string root, string domain)
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{
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return new Glade.XML (
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System.Reflection.Assembly.GetCallingAssembly (), resource_name, root, domain);
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}
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[DllImport("libglade-2.0-0.dll")]
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static extern IntPtr glade_xml_get_widget_prefix(IntPtr raw, IntPtr name);
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public Gtk.Widget[] GetWidgetPrefix(string name)
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{
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IntPtr native = GLib.Marshaller.StringToPtrGStrdup (name);
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IntPtr raw_ret = glade_xml_get_widget_prefix(Handle, native);
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GLib.Marshaller.Free (native);
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if (raw_ret == IntPtr.Zero)
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return new Gtk.Widget [0];
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GLib.List list = new GLib.List (raw_ret);
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Gtk.Widget[] result = new Gtk.Widget [list.Count];
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int i = 0;
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foreach (Gtk.Widget w in list)
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result [i++] = w;
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return result;
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}
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