MqWebViewViewSourceScheme, mq_web_view_view_source_scheme_methods: Define

3 files changed, 206 insertions, 1 deletions

diff --git a/src/web-view-schemes/local.mk b/src/web-view-schemes/local.mk
index 879ee6f..af53bc1 100644
--- a/src/web-view-schemes/local.mk
+++ b/src/web-view-schemes/local.mk
@@ -1,2 +1,3 @@
 marquee_SOURCES += \
-	%reldir%/normal.c
+	%reldir%/normal.c \
+	%reldir%/view-source.c
diff --git a/src/web-view-schemes/schemes.h b/src/web-view-schemes/schemes.h
index f3aa7af..7fa8a46 100644
--- a/src/web-view-schemes/schemes.h
+++ b/src/web-view-schemes/schemes.h
@@ -37,6 +37,12 @@ typedef struct {
 	GFile               *save_file;
 } MqWebViewNormalScheme;
 
+typedef struct {
+	gint64  origin_tab_id;
+	guchar *source;
+	gchar  *uri;
+} MqWebViewViewSourceScheme;
+
 union _MqWebViewScheme {
 	MqWebViewNormalScheme normal;
 };
@@ -51,6 +57,7 @@ typedef struct {
 } MqWebViewSchemeMethods;
 
 extern MqWebViewSchemeMethods mq_web_view_normal_scheme_methods;
+extern MqWebViewSchemeMethods mq_web_view_view_source_scheme_methods;
 
 void
 mq_web_view_normal_scheme_init(MqWebViewNormalScheme *scheme);
@@ -58,6 +65,12 @@ mq_web_view_normal_scheme_init(MqWebViewNormalScheme *scheme);
 void
 mq_web_view_normal_scheme_fini(MqWebViewNormalScheme *scheme);
 
+void
+mq_web_view_view_source_scheme_init(MqWebViewViewSourceScheme *scheme);
+
+void
+mq_web_view_view_source_scheme_fini(MqWebViewViewSourceScheme *scheme);
+
 G_END_DECLS
 
 #endif  /* MQ_WEB_VIEW_SCHEMES_H */
diff --git a/src/web-view-schemes/view-source.c b/src/web-view-schemes/view-source.c
new file mode 100644
index 0000000..e7a1ecb
--- /dev/null
+++ b/src/web-view-schemes/view-source.c
@@ -0,0 +1,191 @@
+/*
+ * Web view members and methods for "view-source" scheme
+ *
+ * Copyright (C) 2017  Patrick McDermott
+ *
+ * This file is part of Marquee.
+ *
+ * Marquee 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Marquee 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 Marquee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "schemes.h"
+
+#include <glib.h>
+#include <webkit2/webkit2.h>
+
+#include "../application.h"
+#include "../config.h"
+#include "../notebook.h"
+#include "../tab-page.h"
+#include "../web-view.h"
+
+static gchar *
+rewrite_uri(MqWebViewScheme G_GNUC_UNUSED *scheme, const gchar *uri)
+{
+	return g_strdup(uri);
+}
+
+static gchar *
+display_uri(MqWebViewScheme G_GNUC_UNUSED *scheme, const gchar *uri)
+{
+	return g_strdup(uri);
+}
+
+#define WKCMA(ACTION) \
+	WEBKIT_CONTEXT_MENU_ACTION_##ACTION
+
+#define ITEM_DECLS \
+	GtkAction             *action; \
+	WebKitContextMenuItem *menu_item;
+#define ITEM_DECLS_NO_CUSTOM \
+	WebKitContextMenuItem *menu_item;
+#define NEW_CUSTOM_ITEM(NAME, LABEL) \
+	G_STMT_START { \
+		/* Don't blame me; blame WebKitGTK+ for using GtkAction. */ \
+		G_GNUC_BEGIN_IGNORE_DEPRECATIONS \
+		action = gtk_action_new(#NAME, (LABEL), NULL, NULL); \
+		G_GNUC_END_IGNORE_DEPRECATIONS \
+		g_signal_connect(action, "activate", \
+			G_CALLBACK(menu_##NAME##_activate_cb), web_view); \
+		menu_item = webkit_context_menu_item_new(action); \
+		webkit_context_menu_append(context_menu, menu_item); \
+	} G_STMT_END
+#define NEW_STOCK_ITEM(STOCK) \
+	G_STMT_START { \
+		menu_item = webkit_context_menu_item_new_from_stock_action( \
+			WEBKIT_CONTEXT_MENU_ACTION_##STOCK); \
+		webkit_context_menu_append(context_menu, menu_item); \
+	} G_STMT_END
+#define NEW_SEPARATOR_ITEM() \
+	G_STMT_START { \
+		webkit_context_menu_append(context_menu, \
+			webkit_context_menu_item_new_separator()); \
+	} G_STMT_END
+#define RESTORE_ITEMS(ITEMS) \
+	G_STMT_START { \
+		for (; ITEMS; ITEMS = ITEMS->next) { \
+			webkit_context_menu_append(context_menu, ITEMS->data); \
+			g_object_unref(ITEMS->data); \
+		} \
+	} G_STMT_END
+
+static void
+context_menu_document_cb(WebKitContextMenu *context_menu, GList *nav_items,
+	MqWebView G_GNUC_UNUSED *web_view)
+{
+	ITEM_DECLS_NO_CUSTOM
+
+	RESTORE_ITEMS(nav_items);    /* _Back, _Forward, _Stop, _Reload */
+	NEW_SEPARATOR_ITEM();        /* --- */
+	NEW_STOCK_ITEM(SELECT_ALL);  /* Select _All */
+	NEW_SEPARATOR_ITEM();        /* --- */
+}
+
+#define PRESERVE_ITEM(ITEMS) \
+	G_STMT_START { \
+		g_object_ref(items->data); \
+		ITEMS = g_list_prepend(ITEMS, items->data); \
+	} G_STMT_END
+
+static gboolean
+context_menu(MqWebView *web_view, MqWebViewScheme G_GNUC_UNUSED *scheme,
+	WebKitContextMenu *context_menu, GdkEvent G_GNUC_UNUSED *event,
+	WebKitHitTestResult *hit_test_result)
+{
+	GList                      *items;
+	GList                      *nav_items;
+	GList                      *edit_items;
+	gboolean                    is_selection;
+	WebKitContextMenuAction     stock_action;
+	WebKitHitTestResultContext  context;
+	gboolean                    context_handled;
+	WebKitContextMenuItem      *menu_item;
+
+	/* Get more hints about the context, since WebKit doesn't describe
+	 * context very well in hit test results.  Also, preserve menu items
+	 * that aren't easy to reproduce (e.g. the Unicode menu and spelling
+	 * guesses). */
+	items = webkit_context_menu_get_items(context_menu);
+	nav_items          = NULL;
+	edit_items         = NULL;
+	is_selection = FALSE;
+	for (; items; items = items->next) {
+		stock_action = webkit_context_menu_item_get_stock_action(
+			items->data);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wswitch"
+		switch (stock_action) {
+			case WKCMA(GO_BACK):
+			case WKCMA(GO_FORWARD):
+			case WKCMA(STOP):
+			case WKCMA(RELOAD):
+				PRESERVE_ITEM(nav_items);
+				break;
+			case WKCMA(COPY):
+				PRESERVE_ITEM(edit_items);
+				is_selection = TRUE;
+				break;
+		}
+#pragma GCC diagnostic pop
+	}
+	nav_items  = g_list_reverse(nav_items);
+	edit_items = g_list_reverse(edit_items);
+
+	/* Clear the menu. */
+	webkit_context_menu_remove_all(context_menu);
+
+	/* Get the reported context (which isn't very descriptive) and save the
+	 * hit test result for use by action callbacks. */
+	context = webkit_hit_test_result_get_context(hit_test_result);
+	if (scheme->normal.hit_test_result) {
+		g_object_unref(scheme->normal.hit_test_result);
+	}
+	scheme->normal.hit_test_result = hit_test_result;
+	g_object_ref(scheme->normal.hit_test_result);
+	context_handled = FALSE;
+
+	/* Build the context menu. */
+	if (context & WEBKIT_HIT_TEST_RESULT_CONTEXT_DOCUMENT) {
+		if (is_selection) {
+			RESTORE_ITEMS(edit_items);  /* _Copy */
+			context_handled = TRUE;
+		} else {
+			context_menu_document_cb(context_menu, nav_items,
+				web_view);
+			context_handled = TRUE;
+		}
+		if (context_handled) {
+			NEW_SEPARATOR_ITEM();
+		}
+		NEW_STOCK_ITEM(INSPECT_ELEMENT);  /* Inspect Element */
+	}
+
+	/* Propagate the event further and show the context menu. */
+	return FALSE;
+}
+
+static void
+save_file(MqWebView *web_view, MqWebViewScheme *scheme)
+{
+	/* TODO: Stub */
+	mq_web_view_get_scheme(web_view);
+	*scheme = *scheme;
+}
+
+MqWebViewSchemeMethods mq_web_view_view_source_scheme_methods = {
+	.rewrite_uri  = rewrite_uri,
+	.display_uri  = display_uri,
+	.context_menu = context_menu,
+	.save_file    = save_file,
+};