Logging: migrate and provide content interface

Migrate the console enums into netsurf/console.h and add
support so that contents can raise a message to log to
the console.

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

content/content.h

@@ -33,6 +33,7 @@
 #include "content/content_factory.h"
 #include "desktop/search.h" /* search flags enum */
 #include "netsurf/mouse.h" /* mouse state enums */
+#include "netsurf/console.h" /* console state and flags enums */
 
 struct browser_window;
 struct browser_window_features;
@@ -56,6 +57,7 @@ typedef enum {
 
 /** Used in callbacks to indicate what has occurred. */
 typedef enum {
+	CONTENT_MSG_LOG,       /**< Content wishes to log something */
 	CONTENT_MSG_LOADING,   /**< fetching or converting */
 	CONTENT_MSG_READY,     /**< may be displayed */
 	CONTENT_MSG_DONE,      /**< finished */
@@ -95,6 +97,13 @@ struct content_rfc5988_link {
 
 /** Extra data for some content_msg messages. */
 union content_msg_data {
+	/** CONTENT_MSG_LOG - Information for logging */
+	struct {
+		browser_window_console_source src; /**< The source of the logging */
+		const char *msg; /**< The message to log */
+		size_t msglen; /**< The length of that message */
+		browser_window_console_flags flags; /**< The flags of the logging */
+	} log;
 	/** CONTENT_MSG_ERROR - Error message */
 	const char *error;
         /** CONTENT_MSG_ERRORCODE - Error code */

content/handlers/html/html.c

@@ -2514,7 +2514,7 @@ static bool html_exec(struct content *c, const char *src, size_t srclen)
 	dom_text *text_node;
 	dom_node *spare_node;
 	dom_html_script_element *script_node;
-	
+
 	if (htmlc->document == NULL) {
 		NSLOG(netsurf, DEEPDEBUG, "Unable to exec, no document");
 		goto out_no_string;

desktop/browser.c

@@ -1358,6 +1358,13 @@ browser_window_callback(hlcache_handle *c,
 	float sx, sy;
 
 	switch (event->type) {
+	case CONTENT_MSG_LOG:
+		browser_window_console_log(bw,
+					   event->data.log.src,
+					   event->data.log.msg,
+					   event->data.log.msglen,
+					   event->data.log.flags);
+		break;
 	case CONTENT_MSG_DOWNLOAD:
 		assert(bw->loading_content == c);
 

include/netsurf/browser_window.h

@@ -30,6 +30,7 @@
 
 #include "utils/errors.h"
 #include "netsurf/mouse.h"
+#include "netsurf/console.h"
 
 struct browser_window;
 struct hlcache_handle;
@@ -143,43 +144,6 @@ struct browser_window_features {
 	} form_features;
 };
 
-/**
- * Sources of messages which end up in the browser window console
- */
-typedef enum {
-	BW_CS_INPUT, /**< Input from the client */
-	BW_CS_SCRIPT_ERROR, /**< Error from some running script */
-	BW_CS_SCRIPT_CONSOLE, /**< Logging from some running script */
-} browser_window_console_source;
-
-/**
- * Flags for browser window console logging.
- *
- * It is valid to bitwise-or some of these flags together where indicated.
- */
-typedef enum {
-	/**
-	 * The log entry is foldable.
-	 *
-	 * Set this to indicate that the text should be folded on the first
-	 * newline on display.  If this is set but there are no newlines in
-	 * the logged text, the core will unset it before passing on to
-	 * callbacks or storing the log entry.
-	 */
-	BW_CS_FLAG_FOLDABLE = 1 << 0,
-
-	/** Logged at the 'log' level, please only use one of the LEVEL flags */
-	BW_CS_FLAG_LEVEL_LOG = 0 << 1,
-	/** Logged at the 'info' level, please use only one of the LEVEL flags */
-	BW_CS_FLAG_LEVEL_INFO = 1 << 1,
-	/** Logged at the 'warn' level, please use only one of the LEVEL flags */
-	BW_CS_FLAG_LEVEL_WARN = 2 << 1,
-	/** Logged at the 'error' level, please use only one of the LEVEL flags */
-	BW_CS_FLAG_LEVEL_ERROR = 3 << 1,
-	/** Mask for the error level to allow easy comparison using the above */
-	BW_CS_FLAG_LEVEL_MASK = 3 << 1,
-} browser_window_console_flags;
-
 /**
  * Create and open a new root browser window with the given page.
  *

include/netsurf/console.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 Daniel Silverstone <dsilvers@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file
+ * Browser window console stuff
+ */
+
+#ifndef _NETSURF_CONSOLE_H_
+#define _NETSURF_CONSOLE_H_
+
+/**
+ * Sources of messages which end up in the browser window console
+ */
+typedef enum {
+	BW_CS_INPUT, /**< Input from the client */
+	BW_CS_SCRIPT_ERROR, /**< Error from some running script */
+	BW_CS_SCRIPT_CONSOLE, /**< Logging from some running script */
+} browser_window_console_source;
+
+/**
+ * Flags for browser window console logging.
+ *
+ * It is valid to bitwise-or some of these flags together where indicated.
+ */
+typedef enum {
+	/**
+	 * The log entry is foldable.
+	 *
+	 * Set this to indicate that the text should be folded on the first
+	 * newline on display.  If this is set but there are no newlines in
+	 * the logged text, the core will unset it before passing on to
+	 * callbacks or storing the log entry.
+	 */
+	BW_CS_FLAG_FOLDABLE = 1 << 0,
+
+	/** Logged at the 'log' level, please only use one of the LEVEL flags */
+	BW_CS_FLAG_LEVEL_LOG = 0 << 1,
+	/** Logged at the 'info' level, please use only one of the LEVEL flags */
+	BW_CS_FLAG_LEVEL_INFO = 1 << 1,
+	/** Logged at the 'warn' level, please use only one of the LEVEL flags */
+	BW_CS_FLAG_LEVEL_WARN = 2 << 1,
+	/** Logged at the 'error' level, please use only one of the LEVEL flags */
+	BW_CS_FLAG_LEVEL_ERROR = 3 << 1,
+	/** Mask for the error level to allow easy comparison using the above */
+	BW_CS_FLAG_LEVEL_MASK = 3 << 1,
+} browser_window_console_flags;
+
+#endif /* _NETSURF_CONSOLE_H_ */
+