forked from AuroraMiddleware/gtk
clipboard: Allow claiming the clipboard to fail
Also make clipboard_claim() a vfunc so backends can override it. Because the whole operation a vfunc, backends have the option of adding code before the actual claim is done and potentially even fail or do something after the successful claim.
This commit is contained in:
Benjamin Otte
parent
7426f1a16b
commit
8e132ef0c4
@ -125,6 +125,67 @@ gdk_clipboard_finalize (GObject *object)
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G_OBJECT_CLASS (gdk_clipboard_parent_class)->finalize (object);
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}
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static void
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gdk_clipboard_content_changed_cb (GdkContentProvider *provider,
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GdkClipboard *clipboard);
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static gboolean
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gdk_clipboard_real_claim (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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gboolean local,
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GdkContentProvider *content)
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{
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GdkClipboardPrivate *priv = gdk_clipboard_get_instance_private (clipboard);
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g_object_freeze_notify (G_OBJECT (clipboard));
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gdk_content_formats_unref (priv->formats);
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gdk_content_formats_ref (formats);
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formats = gdk_content_formats_union_deserialize_gtypes (formats);
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priv->formats = formats;
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_FORMATS]);
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if (priv->local != local)
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{
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priv->local = local;
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_LOCAL]);
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}
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if (priv->content != content)
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{
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GdkContentProvider *old_content = priv->content;
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if (content)
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priv->content = g_object_ref (content);
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else
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priv->content = NULL;
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if (old_content)
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{
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g_signal_handlers_disconnect_by_func (old_content,
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gdk_clipboard_content_changed_cb,
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clipboard);
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gdk_content_provider_detach_clipboard (old_content, clipboard);
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g_object_unref (old_content);
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}
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if (content)
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{
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gdk_content_provider_attach_clipboard (content, clipboard);
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g_signal_connect (content,
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"content-changed",
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G_CALLBACK (gdk_clipboard_content_changed_cb),
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clipboard);
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}
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_CONTENT]);
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}
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g_object_thaw_notify (G_OBJECT (clipboard));
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g_signal_emit (clipboard, signals[CHANGED], 0);
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return TRUE;
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}
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static void
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gdk_clipboard_read_local_write_done (GObject *clipboard,
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GAsyncResult *result,
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@ -221,6 +282,7 @@ gdk_clipboard_class_init (GdkClipboardClass *class)
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object_class->set_property = gdk_clipboard_set_property;
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object_class->finalize = gdk_clipboard_finalize;
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class->claim = gdk_clipboard_real_claim;
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class->read_async = gdk_clipboard_read_local_async;
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class->read_finish = gdk_clipboard_read_local_finish;
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@ -940,60 +1002,13 @@ gdk_clipboard_write_finish (GdkClipboard *clipboard,
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return g_task_propagate_boolean (G_TASK (result), error);
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}
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static void
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gdk_clipboard_content_changed_cb (GdkContentProvider *provider,
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GdkClipboard *clipboard);
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static void
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static gboolean
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gdk_clipboard_claim (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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gboolean local,
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GdkContentProvider *content)
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{
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GdkClipboardPrivate *priv = gdk_clipboard_get_instance_private (clipboard);
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g_object_freeze_notify (G_OBJECT (clipboard));
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gdk_content_formats_unref (priv->formats);
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gdk_content_formats_ref (formats);
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formats = gdk_content_formats_union_deserialize_gtypes (formats);
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priv->formats = formats;
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_FORMATS]);
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if (priv->local != local)
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{
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priv->local = local;
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_LOCAL]);
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}
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if (priv->content != content)
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{
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GdkContentProvider *old_content = priv->content;
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priv->content = g_object_ref (content);
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if (old_content)
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{
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g_signal_handlers_disconnect_by_func (old_content,
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gdk_clipboard_content_changed_cb,
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clipboard);
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gdk_content_provider_detach_clipboard (old_content, clipboard);
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g_object_unref (old_content);
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}
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if (content)
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{
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gdk_content_provider_attach_clipboard (content, clipboard);
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g_signal_connect (content,
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"content-changed",
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G_CALLBACK (gdk_clipboard_content_changed_cb),
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clipboard);
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}
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g_object_notify_by_pspec (G_OBJECT (clipboard), properties[PROP_CONTENT]);
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}
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g_object_thaw_notify (G_OBJECT (clipboard));
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g_signal_emit (clipboard, signals[CHANGED], 0);
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return GDK_CLIPBOARD_GET_CLASS (clipboard)->claim (clipboard, formats, local, content);
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}
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static void
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@ -1030,24 +1045,31 @@ gdk_clipboard_claim_remote (GdkClipboard *clipboard,
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* #GdkDisplay's resources and advertise these new contents to other
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* applications.
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*
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* In the rare case of a failure, this function will return %FALSE. The
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* clipboard will then continue reporting its old contents and ignore
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* @provider.
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*
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* If the contents are read by either an external application or the
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* @clipboard's read functions, @clipboard will select the best format to
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* transfer the contents and then request that format from @provider.
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*
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* Returns: %TRUE if setting the clipboard succeeded
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**/
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void
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gboolean
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gdk_clipboard_set_content (GdkClipboard *clipboard,
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GdkContentProvider *provider)
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{
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GdkClipboardPrivate *priv = gdk_clipboard_get_instance_private (clipboard);
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GdkContentFormats *formats;
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gboolean result;
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g_return_if_fail (GDK_IS_CLIPBOARD (clipboard));
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g_return_if_fail (provider == NULL || GDK_IS_CONTENT_PROVIDER (provider));
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g_return_val_if_fail (GDK_IS_CLIPBOARD (clipboard), FALSE);
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g_return_val_if_fail (provider == NULL || GDK_IS_CONTENT_PROVIDER (provider), FALSE);
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if (provider)
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{
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if (priv->content == provider)
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return;
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return TRUE;
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formats = gdk_content_provider_ref_formats (provider);
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formats = gdk_content_formats_union_serialize_mime_types (formats);
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@ -1055,14 +1077,16 @@ gdk_clipboard_set_content (GdkClipboard *clipboard,
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else
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{
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if (priv->content == NULL && priv->local)
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return;
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return TRUE;
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formats = gdk_content_formats_new (NULL, 0);
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}
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gdk_clipboard_claim (clipboard, formats, TRUE, provider);
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result = gdk_clipboard_claim (clipboard, formats, TRUE, provider);
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gdk_content_formats_unref (formats);
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return result;
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}
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/**
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@ -89,7 +89,7 @@ char * gdk_clipboard_read_text_finish (GdkClipboard *
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GError **error);
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GDK_AVAILABLE_IN_3_94
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void gdk_clipboard_set_content (GdkClipboard *clipboard,
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gboolean gdk_clipboard_set_content (GdkClipboard *clipboard,
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GdkContentProvider *provider);
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GDK_AVAILABLE_IN_3_94
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void gdk_clipboard_set_text (GdkClipboard *clipboard,
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@ -41,16 +41,20 @@ struct _GdkClipboardClass
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void (* changed) (GdkClipboard *clipboard);
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/* vfuncs */
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void (* read_async) (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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int io_priority,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GInputStream * (* read_finish) (GdkClipboard *clipboard,
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const char **out_mime_type,
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GAsyncResult *result,
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GError **error);
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gboolean (* claim) (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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gboolean local,
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GdkContentProvider *content);
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void (* read_async) (GdkClipboard *clipboard,
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GdkContentFormats *formats,
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int io_priority,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GInputStream * (* read_finish) (GdkClipboard *clipboard,
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const char **out_mime_type,
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GAsyncResult *result,
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GError **error);
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};
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GdkClipboard * gdk_clipboard_new (GdkDisplay *display);
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