[gtk+] clipboard: Implement gdk_clipboard_read()

[Benjamin Otte <otte src gnome org>]

commit c91a38b013415b42e32f25c11ebf16897123ed2d
Author: Benjamin Otte <otte redhat com>
Date:   Mon Nov 20 02:06:21 2017 +0100

    clipboard: Implement gdk_clipboard_read()

 gdk/gdkclipboard.c         |   23 +++++++++++++++++++++++
 gdk/gdkclipboard.h         |    3 +++
 gdk/gdkclipboardprivate.h  |    4 +++-
 gdk/x11/gdkclipboard-x11.c |   16 +++++++++++++++-
 4 files changed, 44 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkclipboard.c b/gdk/gdkclipboard.c
index 77862dd..eee9284 100644
--- a/gdk/gdkclipboard.c
+++ b/gdk/gdkclipboard.c
@@ -113,6 +113,14 @@ gdk_clipboard_finalize (GObject *object)
   G_OBJECT_CLASS (gdk_clipboard_parent_class)->finalize (object);
 }
 
+static GInputStream *
+gdk_clipboard_real_read (GdkClipboard *clipboard,
+                         const char   *mime_type)
+{
+  /* whoop whooop */
+  return g_memory_input_stream_new ();
+}
+
 static void
 gdk_clipboard_class_init (GdkClipboardClass *class)
 {
@@ -122,6 +130,8 @@ gdk_clipboard_class_init (GdkClipboardClass *class)
   object_class->set_property = gdk_clipboard_set_property;
   object_class->finalize = gdk_clipboard_finalize;
 
+  class->read = gdk_clipboard_real_read;
+
   /**
    * GdkClipboard:display:
    *
@@ -227,6 +237,19 @@ gdk_clipboard_get_formats (GdkClipboard *clipboard)
   return priv->formats;
 }
 
+GInputStream *
+gdk_clipboard_read (GdkClipboard *clipboard,
+                    const char   *mime_type)
+{
+  GdkClipboardPrivate *priv = gdk_clipboard_get_instance_private (clipboard);
+
+  g_return_val_if_fail (GDK_IS_CLIPBOARD (clipboard), NULL);
+  g_return_val_if_fail (mime_type != NULL, NULL);
+  g_return_val_if_fail (gdk_content_formats_contain_mime_type (priv->formats, mime_type), NULL);
+
+  return GDK_CLIPBOARD_GET_CLASS (clipboard)->read (clipboard, mime_type);
+}
+
 GdkClipboard *
 gdk_clipboard_new (GdkDisplay *display)
 {
diff --git a/gdk/gdkclipboard.h b/gdk/gdkclipboard.h
index 08943e5..6c36c94 100644
--- a/gdk/gdkclipboard.h
+++ b/gdk/gdkclipboard.h
@@ -42,6 +42,9 @@ GdkDisplay *            gdk_clipboard_get_display       (GdkClipboard          *
 GDK_AVAILABLE_IN_3_94
 GdkContentFormats *     gdk_clipboard_get_formats       (GdkClipboard          *clipboard);
 
+GDK_AVAILABLE_IN_3_94
+GInputStream *          gdk_clipboard_read              (GdkClipboard          *clipboard,
+                                                         const char            *mime_type);
 
 G_END_DECLS
 
diff --git a/gdk/gdkclipboardprivate.h b/gdk/gdkclipboardprivate.h
index adc6c0a..faf1ce6 100644
--- a/gdk/gdkclipboardprivate.h
+++ b/gdk/gdkclipboardprivate.h
@@ -38,9 +38,11 @@ struct _GdkClipboardClass
   GObjectClass parent_class;
 
   /* signals */
-  void          (* changed)          (GdkClipboard           *clipboard);
+  void                  (* changed)                             (GdkClipboard           *clipboard);
 
   /* vfuncs */
+  GInputStream *        (* read)                                (GdkClipboard           *clipboard,
+                                                                 const char             *mime_type);
 };
 
 GdkClipboard *          gdk_clipboard_new                       (GdkDisplay             *display);
diff --git a/gdk/x11/gdkclipboard-x11.c b/gdk/x11/gdkclipboard-x11.c
index 28def4e..b692006 100644
--- a/gdk/x11/gdkclipboard-x11.c
+++ b/gdk/x11/gdkclipboard-x11.c
@@ -180,13 +180,27 @@ gdk_x11_clipboard_finalize (GObject *object)
   G_OBJECT_CLASS (gdk_x11_clipboard_parent_class)->finalize (object);
 }
 
+static GInputStream *
+gdk_x11_clipboard_read (GdkClipboard *clipboard,
+                        const char   *mime_type)
+{
+  GdkX11Clipboard *cb = GDK_X11_CLIPBOARD (clipboard);
+
+  return gdk_x11_selection_input_stream_new (gdk_clipboard_get_display (GDK_CLIPBOARD (cb)),
+                                             cb->selection,
+                                             mime_type,
+                                             cb->timestamp);
+}
+
 static void
 gdk_x11_clipboard_class_init (GdkX11ClipboardClass *class)
 {
   GObjectClass *object_class = G_OBJECT_CLASS (class);
-  //GdkClipboardClass *clipboard_class = GDK_CLIPBOARD_CLASS (class);
+  GdkClipboardClass *clipboard_class = GDK_CLIPBOARD_CLASS (class);
 
   object_class->finalize = gdk_x11_clipboard_finalize;
+
+  clipboard_class->read = gdk_x11_clipboard_read;
 }
 
 static void