libide: relax context property requirements

We don't need to require IdeObject for a bunch of things, we can just rely
on GObject + the context property.

This will let us work around some language breaking checks in Vala.

libide/buildsystem/ide-build-pipeline-addin.c

@@ -32,7 +32,7 @@ ide_build_pipeline_addin_default_init (IdeBuildPipelineAddinInterface *iface)
                                                             NULL,
                                                             NULL,
                                                             IDE_TYPE_CONTEXT,
-                                                            (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)));
+                                                            (G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)));
 }
 
 void

libide/buildsystem/ide-build-pipeline-addin.h

@@ -39,7 +39,6 @@ struct _IdeBuildPipelineAddinInterface
                   IdeBuildPipeline      *pipeline);
 
   /* Pacify vala, these are unnecessary */
-  IdeContext *(*get_context) (IdeBuildPipelineAddin *self);
   void        (*set_context) (IdeBuildPipelineAddin *self,
                               IdeContext            *context);
 };

libide/diagnostics/ide-diagnostic-provider.c

@@ -26,7 +26,7 @@
 #include "diagnostics/ide-diagnostics.h"
 #include "files/ide-file.h"
 
-G_DEFINE_INTERFACE (IdeDiagnosticProvider, ide_diagnostic_provider, IDE_TYPE_OBJECT)
+G_DEFINE_INTERFACE (IdeDiagnosticProvider, ide_diagnostic_provider, G_TYPE_OBJECT)
 
 enum {
   INVALIDATED,

libide/diagnostics/ide-diagnostic-provider.h

@@ -25,7 +25,7 @@ G_BEGIN_DECLS
 
 #define IDE_TYPE_DIAGNOSTIC_PROVIDER (ide_diagnostic_provider_get_type())
 
-G_DECLARE_INTERFACE (IdeDiagnosticProvider, ide_diagnostic_provider, IDE, DIAGNOSTIC_PROVIDER, IdeObject)
+G_DECLARE_INTERFACE (IdeDiagnosticProvider, ide_diagnostic_provider, IDE, DIAGNOSTIC_PROVIDER, GObject)
 
 struct _IdeDiagnosticProviderInterface
 {

libide/symbols/ide-symbol-resolver.c

@@ -24,7 +24,7 @@
 #include "files/ide-file.h"
 #include "symbols/ide-symbol-resolver.h"
 
-G_DEFINE_INTERFACE (IdeSymbolResolver, ide_symbol_resolver, IDE_TYPE_OBJECT)
+G_DEFINE_INTERFACE (IdeSymbolResolver, ide_symbol_resolver, G_TYPE_OBJECT)
 
 static void
 ide_symbol_resolver_real_get_symbol_tree_async (IdeSymbolResolver   *self,

libide/symbols/ide-symbol-resolver.h

@@ -26,14 +26,12 @@ G_BEGIN_DECLS
 
 #define IDE_TYPE_SYMBOL_RESOLVER (ide_symbol_resolver_get_type())
 
-G_DECLARE_INTERFACE (IdeSymbolResolver, ide_symbol_resolver, IDE, SYMBOL_RESOLVER, IdeObject)
+G_DECLARE_INTERFACE (IdeSymbolResolver, ide_symbol_resolver, IDE, SYMBOL_RESOLVER, GObject)
 
 struct _IdeSymbolResolverInterface
 {
   GTypeInterface parent_interface;
 
-  void           (*set_context)            (IdeSymbolResolver    *self,
-                                            IdeContext           *context);
   void           (*lookup_symbol_async)    (IdeSymbolResolver    *self,
                                             IdeSourceLocation    *location,
                                             GCancellable         *cancellable,
@@ -52,6 +50,10 @@ struct _IdeSymbolResolverInterface
                                             GAsyncResult         *result,
                                             GError              **error);
   void           (*load)                   (IdeSymbolResolver    *self);
+
+  /* Pacify vala, ideally we wouldn't have this vfunc */
+  void           (*set_context)            (IdeSymbolResolver    *self,
+                                            IdeContext           *context);
 };
 
 void           ide_symbol_resolver_load                   (IdeSymbolResolver    *self);