From 56ab960cce95b9df69ba0cd7f7df4e8200ef4a69 Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Tue, 8 Nov 2022 19:43:01 +0100
Subject: [PATCH] [ecmascript] Added keydown and keyup code for eventListeners.

TODO: KeyEvent (keycode etc.)
---
 src/viewer/text/Makefile             |  2 +-
 src/viewer/text/link.cpp             |  2 +-
 src/viewer/text/meson.build          |  2 +-
 src/viewer/text/{view.c => view.cpp} | 34 ++++++++++++++++++++++++----
 test/ecmascript/keyListener.html     | 20 ++++++++++++++++
 5 files changed, 52 insertions(+), 8 deletions(-)
 rename src/viewer/text/{view.c => view.cpp} (98%)
 create mode 100644 test/ecmascript/keyListener.html

diff --git a/src/viewer/text/Makefile b/src/viewer/text/Makefile
index f1f84b65d..873388101 100644
--- a/src/viewer/text/Makefile
+++ b/src/viewer/text/Makefile
@@ -5,6 +5,6 @@ INCLUDES += $(TRE_CFLAGS)
 
 OBJS-$(CONFIG_MARKS) += marks.o
 
-OBJS = draw.o form.obj link.obj search.o textarea.o view.o vs.obj
+OBJS = draw.o form.obj link.obj search.o textarea.o view.obj vs.obj
 
 include $(top_srcdir)/Makefile.lib
diff --git a/src/viewer/text/link.cpp b/src/viewer/text/link.cpp
index 71f35ef40..84edceb65 100644
--- a/src/viewer/text/link.cpp
+++ b/src/viewer/text/link.cpp
@@ -24,6 +24,7 @@
 #ifdef CONFIG_ECMASCRIPT_SMJS
 #include "ecmascript/spidermonkey/element.h"
 #include <libxml++/libxml++.h>
+#include <map>
 #endif
 
 #include "intl/libintl.h"
@@ -50,7 +51,6 @@
 #include "viewer/text/view.h"
 #include "viewer/text/vs.h"
 
-#include <map>
 
 /* Perhaps some of these would be more fun to have in viewer/common/, dunno.
  * --pasky */
diff --git a/src/viewer/text/meson.build b/src/viewer/text/meson.build
index 656300cb3..ddb20d6b4 100644
--- a/src/viewer/text/meson.build
+++ b/src/viewer/text/meson.build
@@ -4,4 +4,4 @@ if conf_data.get('CONFIG_MARKS')
 	srcs += files('marks.c')
 endif
 
-srcs += files('draw.c', 'form.cpp', 'link.cpp', 'search.c', 'textarea.c', 'view.c', 'vs.cpp')
+srcs += files('draw.c', 'form.cpp', 'link.cpp', 'search.c', 'textarea.c', 'view.cpp', 'vs.cpp')
diff --git a/src/viewer/text/view.c b/src/viewer/text/view.cpp
similarity index 98%
rename from src/viewer/text/view.c
rename to src/viewer/text/view.cpp
index b2002cb87..a86c399f0 100644
--- a/src/viewer/text/view.c
+++ b/src/viewer/text/view.cpp
@@ -27,6 +27,11 @@
 #include "document/options.h"
 #include "document/renderer.h"
 #include "document/view.h"
+#ifdef CONFIG_ECMASCRIPT_SMJS
+#include "ecmascript/spidermonkey/element.h"
+#include <libxml++/libxml++.h>
+#include <map>
+#endif
 #include "intl/charsets.h"
 #include "intl/libintl.h"
 #include "main/event.h"
@@ -1277,19 +1282,38 @@ static enum frame_event_status
 try_form_action(struct session *ses, struct document_view *doc_view,
 		struct link *link, struct term_event *ev)
 {
-	enum frame_event_status status;
+	enum frame_event_status status = FRAME_EVENT_OK;
 
 	assert(link);
 
 	if (!link_is_textinput(link))
 		return FRAME_EVENT_IGNORED;
 
-	if (!current_link_evhook(doc_view, SEVHOOK_ONKEYDOWN)
-	|| !current_link_evhook(doc_view, SEVHOOK_ONKEYUP)) {
-		return FRAME_EVENT_IGNORED;
+#ifdef CONFIG_ECMASCRIPT
+	std::map<int, xmlpp::Element *> *mapa = (std::map<int, xmlpp::Element *> *)doc_view->document->element_map;
+
+	if (mapa) {
+		auto element = (*mapa).find(link->element_offset);
+
+		if (element != (*mapa).end()) {
+			const char *event_name = script_event_hook_name[SEVHOOK_ONKEYDOWN];
+
+			check_element_event(element->second, event_name);
+			event_name = script_event_hook_name[SEVHOOK_ONKEYUP];
+			check_element_event(element->second, event_name);
+		}
 	}
 
-	status = field_op(ses, doc_view, link, ev);
+	if (!current_link_evhook(doc_view, SEVHOOK_ONKEYDOWN)) {
+		status = FRAME_EVENT_IGNORED;
+	}
+	if (status != FRAME_EVENT_IGNORED && !current_link_evhook(doc_view, SEVHOOK_ONKEYUP)) {
+		status = FRAME_EVENT_IGNORED;
+	}
+#endif
+	if (status != FRAME_EVENT_IGNORED) {
+		status = field_op(ses, doc_view, link, ev);
+	}
 
 	if (status != FRAME_EVENT_IGNORED
 	    && ses->insert_mode == INSERT_MODE_ON) {
diff --git a/test/ecmascript/keyListener.html b/test/ecmascript/keyListener.html
new file mode 100644
index 000000000..9fdb2282d
--- /dev/null
+++ b/test/ecmascript/keyListener.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<body>
+
+<p>A function is triggered when the user is pressing a key in the input field.</p>
+
+<form action="/">
+<input id="k" type="text">
+<input type="submit">
+</form>
+<script>
+function myFunction(event)
+{
+  alert("You pressed a key inside the input field");
+}
+
+document.getElementById('k').addEventListener('keydown', myFunction);
+</script>
+</body>
+</html>