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Support (in a slightly dodgy way) the onload event

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This commit is contained in:
Daniel Silverstone 2015-11-22 16:53:04 +00:00
parent 180a8f452e
commit c92726d3aa
1 changed files with 103 additions and 7 deletions
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110
javascript/duktape/dukky.c
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@ -448,13 +448,6 @@ bool js_exec(jscontext *ctx, const char *txt, size_t txtlen)
return duk_get_boolean(CTX, 0);
}
bool js_fire_event(jscontext *ctx, const char *type, struct dom_document *doc, struct dom_node *target)
{
/* La La La */
LOG("Oh dear, an event: %s", type);
return true;
}
/*** New style event handling ***/
static void dukky_push_event(duk_context *ctx, dom_event *evt)
@ -805,3 +798,106 @@ void js_event_cleanup(jscontext *ctx, struct dom_event *evt)
duk_pop(CTX);
/* ... */
}
bool js_fire_event(jscontext *ctx, const char *type, struct dom_document *doc, struct dom_node *target)
{
dom_exception exc;
dom_event *evt;
dom_event_target *body;
LOG("Event: %s (doc=%p, target=%p)", type, doc, target);
/** @todo Make this more generic, this only handles load and only
* targetting the window, so that we actually stand a chance of
* getting 3.4 out.
*/
if (target != NULL)
/* Swallow non-Window-targetted events quietly */
return true;
if (strcmp(type, "load") != 0)
/* Swallow non-load events quietly */
return true;
/* Okay, we're processing load, targetted at Window, do the single
* thing which gets us there, which is to find the appropriate event
* handler and call it. If we have no event handler on Window then
* we divert to the body, and if there's no event handler there
* we swallow the event silently
*/
exc = dom_event_create(&evt);
if (exc != DOM_NO_ERR) return true;
exc = dom_event_init(evt, corestring_dom_load, false, false);
if (exc != DOM_NO_ERR) {
dom_event_unref(evt);
return true;
}
/* ... */
duk_get_global_string(CTX, HANDLER_MAGIC);
/* ... handlers */
duk_push_lstring(CTX, "load", 4);
/* ... handlers "load" */
duk_get_prop(CTX, -2);
/* ... handlers handler? */
if (duk_is_undefined(CTX, -1)) {
/* No handler here, *try* and retrieve a handler from
* the body
*/
duk_pop(CTX);
/* ... handlers */
exc = dom_html_document_get_body(doc, &body);
if (exc != DOM_NO_ERR) {
dom_event_unref(evt);
return true;
}
dukky_push_node(CTX, (struct dom_node *)body);
/* ... handlers bodynode */
if (dukky_get_current_value_of_event_handler(
CTX, corestring_dom_load, body) == false) {
/* ... handlers */
duk_pop(CTX);
return true;
}
/* ... handlers handler bodynode */
duk_pop(CTX);
}
/* ... handlers handler */
duk_insert(CTX, -2);
/* ... handler handlers */
duk_pop(CTX);
/* ... handler */
duk_push_global_object(CTX);
/* ... handler Window */
dukky_push_event(CTX, evt);
/* ... handler Window event */
if (duk_pcall_method(CTX, 1) != 0) {
/* Failed to run the handler */
/* ... err */
LOG("OH NOES! An error running a handler. Meh.");
duk_get_prop_string(CTX, -1, "name");
duk_get_prop_string(CTX, -2, "message");
duk_get_prop_string(CTX, -3, "fileName");
duk_get_prop_string(CTX, -4, "lineNumber");
duk_get_prop_string(CTX, -5, "stack");
/* ... err name message fileName lineNumber stack */
LOG("Uncaught error in JS: %s: %s", duk_safe_to_string(CTX, -5),
duk_safe_to_string(CTX, -4));
LOG(" was at: %s line %s", duk_safe_to_string(CTX, -3),
duk_safe_to_string(CTX, -2));
LOG(" Stack trace: %s", duk_safe_to_string(CTX, -1));
duk_pop_n(CTX, 6);
/* ... */
js_event_cleanup(ctx, evt);
dom_event_unref(evt);
return true;
}
/* ... result */
duk_pop(CTX);
/* ... */
js_event_cleanup(ctx, evt);
dom_event_unref(evt);
return true;
}