Add message for content wanting wanting drag save to start.

content/content.h

@@ -74,7 +74,8 @@ typedef enum {
 	CONTENT_MSG_DOWNLOAD,  /**< download, not for display */
 	CONTENT_MSG_LINK,      /**< RFC5988 link */
 	CONTENT_MSG_GETCTX,    /**< Javascript context */
-	CONTENT_MSG_SCROLL     /**< Request to scroll content */
+	CONTENT_MSG_SCROLL,    /**< Request to scroll content */
+	CONTENT_MSG_DRAGSAVE   /**< Allow drag saving of content */
 } content_msg;
 
 /** RFC5988 metadata link */
@@ -128,6 +129,16 @@ union content_msg_data {
 		int x0, y0;
 		int x1, y1;
 	} scroll;
+	/** CONTENT_MSG_DRAGSAVE - Drag save a content */
+	struct {
+		enum {
+			CONTENT_SAVE_ORIG,
+			CONTENT_SAVE_NATIVE,
+			CONTENT_SAVE_COMPLETE,
+			CONTENT_SAVE_SOURCE
+		} type;
+		struct hlcache_handle *content;
+	} dragsave;
 };
 
 /** parameters to content redraw */

desktop/browser.c

@@ -1440,6 +1440,36 @@ nserror browser_window_callback(hlcache_handle *c,
 
 		break;
 
+	case CONTENT_MSG_DRAGSAVE:
+	{
+		/* Content wants drag save of a content */
+		struct browser_window *root = browser_window_get_root(bw);
+
+		switch(event->data.dragsave.type) {
+		case CONTENT_SAVE_ORIG:
+			gui_drag_save_object(GUI_SAVE_OBJECT_ORIG,
+					event->data.dragsave.content,
+					root->window);
+			break;
+		case CONTENT_SAVE_NATIVE:
+			gui_drag_save_object(GUI_SAVE_OBJECT_NATIVE,
+					event->data.dragsave.content,
+					root->window);
+			break;
+		case CONTENT_SAVE_COMPLETE:
+			gui_drag_save_object(GUI_SAVE_COMPLETE,
+					event->data.dragsave.content,
+					root->window);
+			break;
+		case CONTENT_SAVE_SOURCE:
+			gui_drag_save_object(GUI_SAVE_SOURCE,
+					event->data.dragsave.content,
+					root->window);
+			break;
+		}
+	}
+		break;
+
 	default:
 		assert(0);
 	}

render/html.c

@@ -1242,6 +1242,11 @@ html_object_callback(hlcache_handle *object,
 					false);
 		break;
 
+	case CONTENT_MSG_DRAGSAVE:
+		/* Pass it on */
+		content_broadcast(&c->base, CONTENT_MSG_DRAGSAVE, event->data);
+		break;
+
 	default:
 		assert(0);
 	}