b75e7c82b6
Gtk.Builder crashes when AddFromString(string) is called with a string that contains a BOM. Hence, if the buffer contains a BOM, just skip it. This fixes the crash with the Gtk# 3 project template in MonoDevelop (robpvn/MonoDevelopGtkSharp3Template).
428 lines
13 KiB
C#
428 lines
13 KiB
C#
// Builder.cs - customizations to Gtk.Builder
|
|
//
|
|
// Authors: Stephane Delcroix <stephane@delcroix.org>
|
|
// The biggest part of this code is adapted from glade#, by
|
|
// Ricardo Fernández Pascual <ric@users.sourceforge.net>
|
|
// Rachel Hestilow <hestilow@ximian.com>
|
|
//
|
|
// Copyright (c) 2002 Ricardo Fernández Pascual
|
|
// Copyright (c) 2003 Rachel Hestilow
|
|
// Copyright (c) 2008 Novell, Inc.
|
|
//
|
|
// This program is free software; you can redistribute it and/or
|
|
// modify it under the terms of version 2 of the Lesser GNU General
|
|
// Public License as published by the Free Software Foundation.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this program; if not, write to the
|
|
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
// Boston, MA 02111-1307, USA.
|
|
|
|
namespace Gtk {
|
|
|
|
using System;
|
|
using System.IO;
|
|
using System.Reflection;
|
|
using System.Runtime.InteropServices;
|
|
using System.Text;
|
|
|
|
public partial class Builder {
|
|
|
|
[System.Serializable]
|
|
public class HandlerNotFoundException : SystemException
|
|
{
|
|
string handler_name;
|
|
string signal_name;
|
|
System.Reflection.EventInfo evnt;
|
|
Type delegate_type;
|
|
|
|
public HandlerNotFoundException (string handler_name, string signal_name,
|
|
System.Reflection.EventInfo evnt, Type delegate_type)
|
|
: this (handler_name, signal_name, evnt, delegate_type, null)
|
|
{
|
|
}
|
|
|
|
public HandlerNotFoundException (string handler_name, string signal_name,
|
|
System.Reflection.EventInfo evnt, Type delegate_type, Exception inner)
|
|
: base ("No handler " + handler_name + " found for signal " + signal_name,
|
|
inner)
|
|
{
|
|
this.handler_name = handler_name;
|
|
this.signal_name = signal_name;
|
|
this.evnt = evnt;
|
|
this.delegate_type = delegate_type;
|
|
}
|
|
|
|
public HandlerNotFoundException (string message, string handler_name, string signal_name,
|
|
System.Reflection.EventInfo evnt, Type delegate_type)
|
|
: base ((message != null) ? message : "No handler " + handler_name + " found for signal " + signal_name,
|
|
null)
|
|
{
|
|
this.handler_name = handler_name;
|
|
this.signal_name = signal_name;
|
|
this.evnt = evnt;
|
|
this.delegate_type = delegate_type;
|
|
}
|
|
|
|
protected HandlerNotFoundException (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
|
|
: base (info, context)
|
|
{
|
|
handler_name = info.GetString ("HandlerName");
|
|
signal_name = info.GetString ("SignalName");
|
|
evnt = info.GetValue ("Event", typeof (System.Reflection.EventInfo)) as System.Reflection.EventInfo;
|
|
delegate_type = info.GetValue ("DelegateType", typeof (Type)) as Type;
|
|
}
|
|
|
|
public string HandlerName
|
|
{
|
|
get {
|
|
return handler_name;
|
|
}
|
|
}
|
|
|
|
public string SignalName
|
|
{
|
|
get {
|
|
return signal_name;
|
|
}
|
|
}
|
|
|
|
public System.Reflection.EventInfo Event
|
|
{
|
|
get {
|
|
return evnt;
|
|
}
|
|
}
|
|
|
|
public Type DelegateType
|
|
{
|
|
get {
|
|
return delegate_type;
|
|
}
|
|
}
|
|
|
|
public override void GetObjectData (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
|
|
{
|
|
base.GetObjectData (info, context);
|
|
info.AddValue ("HandlerName", handler_name);
|
|
info.AddValue ("SignalName", signal_name);
|
|
info.AddValue ("Event", evnt);
|
|
info.AddValue ("DelegateType", delegate_type);
|
|
}
|
|
}
|
|
|
|
|
|
[AttributeUsage (AttributeTargets.Field)]
|
|
public class ObjectAttribute : Attribute
|
|
{
|
|
private string name;
|
|
private bool specified;
|
|
|
|
public ObjectAttribute (string name)
|
|
{
|
|
specified = true;
|
|
this.name = name;
|
|
}
|
|
|
|
public ObjectAttribute ()
|
|
{
|
|
specified = false;
|
|
}
|
|
|
|
public string Name
|
|
{
|
|
get { return name; }
|
|
}
|
|
|
|
public bool Specified
|
|
{
|
|
get { return specified; }
|
|
}
|
|
}
|
|
|
|
public IntPtr GetRawObject(string name) {
|
|
IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
|
|
IntPtr raw_ret = gtk_builder_get_object(Handle, native_name);
|
|
GLib.Marshaller.Free (native_name);
|
|
return raw_ret;
|
|
}
|
|
|
|
public Builder (System.IO.Stream s) : this (s, null)
|
|
{
|
|
}
|
|
|
|
public Builder (System.IO.Stream s, string translation_domain)
|
|
{
|
|
if (s == null)
|
|
throw new ArgumentNullException ("s");
|
|
|
|
AddFromStream (s);
|
|
TranslationDomain = translation_domain;
|
|
}
|
|
|
|
public Builder (string resource_name) : this (Assembly.GetCallingAssembly (), resource_name, null)
|
|
{
|
|
}
|
|
|
|
public Builder (string resource_name, string translation_domain)
|
|
: this (Assembly.GetCallingAssembly (), resource_name, translation_domain)
|
|
{
|
|
}
|
|
|
|
public Builder (Assembly assembly, string resource_name, string translation_domain) : this ()
|
|
{
|
|
if (GetType() != typeof (Builder))
|
|
throw new InvalidOperationException ("Cannot chain to this constructor from subclasses.");
|
|
|
|
if (assembly == null)
|
|
assembly = Assembly.GetCallingAssembly ();
|
|
|
|
System.IO.Stream s = assembly.GetManifestResourceStream (resource_name);
|
|
if (s == null)
|
|
throw new ArgumentException ("Cannot get resource file '" + resource_name + "'",
|
|
"resource_name");
|
|
|
|
AddFromStream (s);
|
|
TranslationDomain = translation_domain;
|
|
}
|
|
|
|
public void Autoconnect (object handler)
|
|
{
|
|
BindFields (handler);
|
|
(new SignalConnector (this, handler)).ConnectSignals ();
|
|
}
|
|
|
|
public void Autoconnect (Type handler_class)
|
|
{
|
|
BindFields (handler_class);
|
|
(new SignalConnector (this, handler_class)).ConnectSignals ();
|
|
}
|
|
|
|
class SignalConnector
|
|
{
|
|
Builder builder;
|
|
Type handler_type;
|
|
object handler;
|
|
|
|
public SignalConnector (Builder builder, object handler)
|
|
{
|
|
this.builder = builder;
|
|
this.handler = handler;
|
|
handler_type = handler.GetType ();
|
|
}
|
|
|
|
public SignalConnector (Builder builder, Type handler_type)
|
|
{
|
|
this.builder = builder;
|
|
this.handler = null;
|
|
this.handler_type = handler_type;
|
|
}
|
|
|
|
[DllImport (Global.GtkNativeDll, CallingConvention = CallingConvention.Cdecl)]
|
|
static extern void gtk_builder_connect_signals_full(IntPtr raw, GtkSharp.BuilderConnectFuncNative func, IntPtr user_data);
|
|
|
|
public void ConnectSignals() {
|
|
GtkSharp.BuilderConnectFuncWrapper func_wrapper = new GtkSharp.BuilderConnectFuncWrapper (new BuilderConnectFunc (ConnectFunc));
|
|
gtk_builder_connect_signals_full(builder.Handle, func_wrapper.NativeDelegate, IntPtr.Zero);
|
|
}
|
|
|
|
public void ConnectFunc (Builder builder, GLib.Object objekt, string signal_name, string handler_name, GLib.Object connect_object, GLib.ConnectFlags flags)
|
|
{
|
|
/* search for the event to connect */
|
|
System.Reflection.MemberInfo[] evnts = objekt.GetType ().
|
|
FindMembers (System.Reflection.MemberTypes.Event,
|
|
System.Reflection.BindingFlags.Instance
|
|
| System.Reflection.BindingFlags.Static
|
|
| System.Reflection.BindingFlags.Public
|
|
| System.Reflection.BindingFlags.NonPublic,
|
|
new System.Reflection.MemberFilter (SignalFilter), signal_name);
|
|
foreach (System.Reflection.EventInfo ei in evnts) {
|
|
bool connected = false;
|
|
System.Reflection.MethodInfo add = ei.GetAddMethod ();
|
|
System.Reflection.ParameterInfo[] addpi = add.GetParameters ();
|
|
if (addpi.Length == 1) { /* this should be always true, unless there's something broken */
|
|
Type delegate_type = addpi[0].ParameterType;
|
|
|
|
/* look for an instance method */
|
|
if (connect_object != null || handler != null)
|
|
try {
|
|
Delegate d = Delegate.CreateDelegate (delegate_type, connect_object != null ? connect_object : handler, handler_name);
|
|
add.Invoke (objekt, new object[] { d } );
|
|
connected = true;
|
|
} catch (ArgumentException) { /* ignore if there is not such instance method */
|
|
}
|
|
|
|
/* look for a static method if no instance method has been found */
|
|
if (!connected && handler_type != null)
|
|
try {
|
|
Delegate d = Delegate.CreateDelegate (delegate_type, handler_type, handler_name);
|
|
add.Invoke (objekt, new object[] { d } );
|
|
connected = true;
|
|
} catch (ArgumentException) { /* ignore if there is not such static method */
|
|
}
|
|
|
|
if (!connected) {
|
|
string msg = ExplainError (ei.Name, delegate_type, handler_type, handler_name);
|
|
throw new HandlerNotFoundException (msg, handler_name, signal_name, ei, delegate_type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool SignalFilter (System.Reflection.MemberInfo m, object filterCriteria)
|
|
{
|
|
string signame = (filterCriteria as string);
|
|
object[] attrs = m.GetCustomAttributes (typeof (GLib.SignalAttribute), false);
|
|
if (attrs.Length > 0)
|
|
{
|
|
foreach (GLib.SignalAttribute a in attrs)
|
|
{
|
|
if (signame == a.CName)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
/* this tries to match the names when no attibutes are present.
|
|
It is only a fallback. */
|
|
signame = signame.ToLower ().Replace ("_", "");
|
|
string evname = m.Name.ToLower ();
|
|
return signame == evname;
|
|
}
|
|
}
|
|
|
|
static string GetSignature (System.Reflection.MethodInfo method)
|
|
{
|
|
if (method == null)
|
|
return null;
|
|
|
|
System.Reflection.ParameterInfo [] parameters = method.GetParameters ();
|
|
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
|
|
sb.Append ('(');
|
|
foreach (System.Reflection.ParameterInfo info in parameters) {
|
|
sb.Append (info.ParameterType.ToString ());
|
|
sb.Append (',');
|
|
}
|
|
if (sb.Length != 0)
|
|
sb.Length--;
|
|
|
|
sb.Append (')');
|
|
return sb.ToString ();
|
|
}
|
|
|
|
static string GetSignature (Type delegate_type)
|
|
{
|
|
System.Reflection.MethodInfo method = delegate_type.GetMethod ("Invoke");
|
|
return GetSignature (method);
|
|
}
|
|
|
|
const System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.NonPublic |
|
|
System.Reflection.BindingFlags.Public |
|
|
System.Reflection.BindingFlags.Static |
|
|
System.Reflection.BindingFlags.Instance;
|
|
static string GetSignature (Type klass, string method_name)
|
|
{
|
|
try {
|
|
System.Reflection.MethodInfo method = klass.GetMethod (method_name, flags);
|
|
return GetSignature (method);
|
|
} catch {
|
|
// May be more than one method with that name and none matches
|
|
return null;
|
|
}
|
|
}
|
|
|
|
|
|
static string ExplainError (string event_name, Type deleg, Type klass, string method)
|
|
{
|
|
if (deleg == null || klass == null || method == null)
|
|
return null;
|
|
|
|
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
|
|
string expected = GetSignature (deleg);
|
|
string actual = GetSignature (klass, method);
|
|
if (actual == null)
|
|
return null;
|
|
sb.AppendFormat ("The handler for the event {0} should take '{1}', " +
|
|
"but the signature of the provided handler ('{2}') is '{3}'\n",
|
|
event_name, expected, method, actual);
|
|
return sb.ToString ();
|
|
}
|
|
|
|
}
|
|
|
|
void AddFromStream (Stream stream)
|
|
{
|
|
var size = (int)stream.Length;
|
|
var buffer = new byte[size];
|
|
stream.Read (buffer, 0, size);
|
|
stream.Close ();
|
|
|
|
// If buffer contains a BOM, omit it while reading, otherwise AddFromString(text) crashes
|
|
var offset = 0;
|
|
if (size >= 3 && buffer [0] == 0xEF && buffer [1] == 0xBB && buffer [2] == 0xBF) {
|
|
offset = 3;
|
|
}
|
|
|
|
var text = Encoding.UTF8.GetString (buffer, offset, size - offset);
|
|
AddFromString (text);
|
|
}
|
|
|
|
void BindFields (object target)
|
|
{
|
|
BindFields (target, target.GetType ());
|
|
}
|
|
|
|
void BindFields (Type type)
|
|
{
|
|
BindFields (null, type);
|
|
}
|
|
|
|
void BindFields (object target, Type type)
|
|
{
|
|
System.Reflection.BindingFlags flags = System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.DeclaredOnly;
|
|
if (target != null)
|
|
flags |= System.Reflection.BindingFlags.Instance;
|
|
else
|
|
flags |= System.Reflection.BindingFlags.Static;
|
|
|
|
do {
|
|
System.Reflection.FieldInfo[] fields = type.GetFields (flags);
|
|
if (fields == null)
|
|
return;
|
|
|
|
foreach (System.Reflection.FieldInfo field in fields)
|
|
{
|
|
object[] attrs = field.GetCustomAttributes (typeof (ObjectAttribute), false);
|
|
if (attrs == null || attrs.Length == 0)
|
|
continue;
|
|
// The widget to field binding must be 1:1, so only check
|
|
// the first attribute.
|
|
ObjectAttribute attr = (ObjectAttribute) attrs[0];
|
|
GLib.Object gobject;
|
|
if (attr.Specified)
|
|
gobject = GetObject (attr.Name);
|
|
else
|
|
gobject = GetObject (field.Name);
|
|
|
|
if (gobject != null)
|
|
try {
|
|
field.SetValue (target, gobject, flags, null, null);
|
|
} catch (Exception e) {
|
|
Console.WriteLine ("Unable to set value for field " + field.Name);
|
|
throw e;
|
|
}
|
|
}
|
|
type = type.BaseType;
|
|
}
|
|
while (type != typeof(object) && type != null);
|
|
}
|
|
}
|
|
}
|