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html: Add function for issuing a keypress event.

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This commit is contained in:
Michael Drake 2019-12-01 18:24:33 +00:00
parent 23b7f7b333
commit 7e6723e27a
2 changed files with 85 additions and 0 deletions
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79
content/handlers/html/html.c
View File

@ -44,6 +44,7 @@
#include "netsurf/content.h"
#include "netsurf/browser_window.h"
#include "netsurf/utf8.h"
#include "netsurf/keypress.h"
#include "netsurf/layout.h"
#include "netsurf/misc.h"
#include "content/hlcache.h"
@ -121,6 +122,84 @@ bool fire_generic_dom_event(dom_string *type, dom_node *target,
return result;
}
/* Exported interface, see html_internal.h */
bool fire_dom_keyboard_event(dom_string *type, dom_node *target,
bool bubbles, bool cancelable, uint32_t key)
{
bool is_special = key <= 0x001F || (0x007F <= key && key <= 0x009F);
dom_string *dom_key = NULL;
dom_keyboard_event *evt;
dom_exception exc;
bool result;
if (is_special) {
switch (key) {
case NS_KEY_ESCAPE:
dom_key = dom_string_ref(corestring_dom_Escape);
break;
case NS_KEY_LEFT:
dom_key = dom_string_ref(corestring_dom_ArrowLeft);
break;
case NS_KEY_RIGHT:
dom_key = dom_string_ref(corestring_dom_ArrowRight);
break;
case NS_KEY_UP:
dom_key = dom_string_ref(corestring_dom_ArrowUp);
break;
case NS_KEY_DOWN:
dom_key = dom_string_ref(corestring_dom_ArrowDown);
break;
case NS_KEY_PAGE_UP:
dom_key = dom_string_ref(corestring_dom_PageUp);
break;
case NS_KEY_PAGE_DOWN:
dom_key = dom_string_ref(corestring_dom_PageDown);
break;
case NS_KEY_TEXT_START:
dom_key = dom_string_ref(corestring_dom_Home);
break;
case NS_KEY_TEXT_END:
dom_key = dom_string_ref(corestring_dom_End);
break;
default:
dom_key = NULL;
break;
}
} else {
char utf8[6];
size_t length = utf8_from_ucs4(key, utf8);
utf8[length] = '\0';
exc = dom_string_create((const uint8_t *)utf8, strlen(utf8),
&dom_key);
if (exc != DOM_NO_ERR) {
return exc;
}
}
exc = dom_keyboard_event_create(&evt);
if (exc != DOM_NO_ERR) {
dom_string_unref(dom_key);
return false;
}
exc = dom_keyboard_event_init(evt, type, bubbles, cancelable, NULL,
dom_key, NULL, DOM_KEY_LOCATION_STANDARD, false,
false, false, false, false, false);
dom_string_unref(dom_key);
if (exc != DOM_NO_ERR) {
dom_event_unref(evt);
return false;
}
NSLOG(netsurf, INFO, "Dispatching '%*s' against %p",
dom_string_length(type), dom_string_data(type), target);
result = fire_dom_event((dom_event *) evt, target);
dom_event_unref(evt);
return result;
}
/**
* Perform post-box-creation conversion of a document
*

6
content/handlers/html/html_internal.h
View File

@ -404,6 +404,12 @@ nserror html_object_abort_objects(html_content *html);
bool fire_generic_dom_event(dom_string *type, dom_node *target,
bool bubbles, bool cancelable);
/**
* Construct a keyboard event and fire it at the DOM
*/
bool fire_dom_keyboard_event(dom_string *type, dom_node *target,
bool bubbles, bool cancelable, uint32_t key);
/* Useful dom_string pointers */
struct dom_string;