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-rw-r--r--src/events/event.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/src/events/event.c b/src/events/event.c
new file mode 100644
index 0000000..f9caa0b
--- /dev/null
+++ b/src/events/event.c
@@ -0,0 +1,354 @@
+/*
+ * This file is part of libdom.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2009 Bo Yang <struggleyb.nku@gmail.com>
+ */
+
+#include <assert.h>
+#include <time.h>
+
+#include "events/event.h"
+
+#include <libwapcaplet/libwapcaplet.h>
+
+#include "core/string.h"
+#include "core/node.h"
+#include "core/document.h"
+
+static void _virtual_dom_event_destroy(struct dom_event *evt);
+
+static struct dom_event_private_vtable _event_vtable = {
+ _virtual_dom_event_destroy
+};
+
+/* Constructor */
+dom_exception _dom_event_create(struct dom_document *doc,
+ struct dom_event **evt)
+{
+ *evt = (dom_event *) _dom_document_alloc(doc, NULL, sizeof(dom_event));
+ if (*evt == NULL)
+ return DOM_NO_MEM_ERR;
+
+ (*evt)->vtable = &_event_vtable;
+
+ return _dom_event_initialise(doc, *evt);
+}
+
+/* Destructor */
+void _dom_event_destroy(struct dom_document *doc, struct dom_event *evt)
+{
+ _dom_event_finalise(doc, evt);
+
+ _dom_document_alloc(doc, evt, sizeof(dom_event));
+}
+
+/* Initialise function */
+dom_exception _dom_event_initialise(struct dom_document *doc,
+ struct dom_event *evt)
+{
+ assert(doc != NULL);
+
+ evt->doc = doc;
+ evt->stop = false;
+ evt->stop_now = false;
+ evt->prevent_default = false;
+ evt->custom = false;
+
+ evt->type = NULL;
+
+ evt->namespace = NULL;
+
+ evt->timestamp = time(NULL);
+
+ evt->refcnt = 1;
+ evt->in_dispatch = false;
+
+ return DOM_NO_ERR;
+}
+
+/* Finalise function */
+void _dom_event_finalise(struct dom_document *doc, struct dom_event *evt)
+{
+ assert(doc != NULL);
+ lwc_context *ctx = _dom_document_get_intern_context(doc);
+ assert(ctx != NULL);
+
+ if (evt->type != NULL)
+ lwc_context_string_unref(ctx, evt->type);
+ if (evt->namespace != NULL)
+ lwc_context_string_unref(ctx, evt->namespace);
+}
+
+/* The virtual destroy function */
+void _virtual_dom_event_destroy(struct dom_event *evt)
+{
+ _dom_event_destroy(evt->doc, evt);
+}
+
+/*----------------------------------------------------------------------*/
+/* The public API */
+
+/**
+ * Claim a reference on this event object
+ *
+ * \param evt The Event object
+ */
+void _dom_event_ref(dom_event *evt)
+{
+ evt->refcnt++;
+}
+
+/**
+ * Release a reference on this event object
+ *
+ * \param evt The Event object
+ */
+void _dom_event_unref(dom_event *evt)
+{
+ if (evt->refcnt > 0)
+ evt->refcnt--;
+
+ if (evt->refcnt == 0)
+ dom_event_destroy(evt);
+}
+
+
+/**
+ * Get the event type
+ *
+ * \param evt The event object
+ * \parnm type The returned event type
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_get_type(dom_event *evt, struct dom_string **type)
+{
+ struct dom_document *doc = evt->doc;
+ dom_exception err;
+
+ err = _dom_document_create_string_from_lwcstring(doc, evt->type, type);
+ if (err != DOM_NO_ERR)
+ return err;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get the target node of this event
+ *
+ * \param evt The event object
+ * \param target The target node
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_get_target(dom_event *evt, dom_event_target **target)
+{
+ *target = evt->target;
+ dom_node_ref(*target);
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get the current target of this event
+ *
+ * \param evt The event object
+ * \param current The current event target node
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_get_current_target(dom_event *evt,
+ dom_event_target **current)
+{
+ *current = evt->current;
+ dom_node_ref(*current);
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get whether this event can bubble
+ *
+ * \param evt The Event object
+ * \param bubbles The returned value
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_get_bubbles(dom_event *evt, bool *bubbles)
+{
+ *bubbles = evt->bubble;
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get whether this event can be cancelable
+ *
+ * \param evt The Event object
+ * \param cancelable The returned value
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_get_cancelable(dom_event *evt, bool *cancelable)
+{
+ *cancelable = evt->cancelable;
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get the event's generation timestamp
+ *
+ * \param evt The Event object
+ * \param timestamp The returned value
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_get_timestamp(dom_event *evt, unsigned int *timestamp)
+{
+ *timestamp = evt->timestamp;
+ return DOM_NO_ERR;
+}
+
+/**
+ * Stop propagation of the event
+ *
+ * \param evt The Event object
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_stop_propagation(dom_event *evt)
+{
+ evt->stop = true;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Prevent the default action of this event
+ *
+ * \param evt The Event object
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_prevent_default(dom_event *evt)
+{
+ evt->prevent_default = true;
+ return DOM_NO_ERR;
+}
+
+/**
+ * Initialise the event object
+ *
+ * \param evt The event object
+ * \param type The type of this event
+ * \param bubble Whether this event can bubble
+ * \param cancelable Whether this event is cancelable
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_init(dom_event *evt, struct dom_string *type,
+ bool bubble, bool cancelable)
+{
+ assert(evt->doc != NULL);
+ lwc_context *ctx = _dom_document_get_intern_context(evt->doc);
+ lwc_string *str = NULL;
+ dom_exception err;
+
+ err = _dom_string_intern(type, ctx, &str);
+ if (err != DOM_NO_ERR)
+ return err;
+
+ evt->type = str;
+ evt->bubble = bubble;
+ evt->cancelable = cancelable;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Get the namespace of this event
+ *
+ * \param evt The event object
+ * \param namespace The returned namespace of this event
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_get_namespace(dom_event *evt,
+ struct dom_string **namespace)
+{
+ struct dom_document *doc = evt->doc;
+ dom_exception err;
+
+ err = _dom_document_create_string_from_lwcstring(doc, evt->namespace,
+ namespace);
+ if (err != DOM_NO_ERR)
+ return err;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Whether this is a custom event
+ *
+ * \param evt The event object
+ * \param custom The returned value
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_is_custom(dom_event *evt, bool *custom)
+{
+ *custom = evt->custom;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Stop the event propagation immediately
+ *
+ * \param evt The event object
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_stop_immediate_propagation(dom_event *evt)
+{
+ evt->stop_now = true;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Whether the default action is prevented
+ *
+ * \param evt The event object
+ * \param prevented The returned value
+ * \return DOM_NO_ERR.
+ */
+dom_exception _dom_event_is_default_prevented(dom_event *evt, bool *prevented)
+{
+ *prevented = evt->prevent_default;
+
+ return DOM_NO_ERR;
+}
+
+/**
+ * Initialise the event with namespace
+ *
+ * \param evt The event object
+ * \param namespace The namespace of this event
+ * \param type The event type
+ * \param bubble Whether this event has a bubble phase
+ * \param cancelable Whether this event is cancelable
+ * \return DOM_NO_ERR on success, appropriate dom_exception on failure.
+ */
+dom_exception _dom_event_init_ns(dom_event *evt, struct dom_string *namespace,
+ struct dom_string *type, bool bubble, bool cancelable)
+{
+ assert(evt->doc != NULL);
+ lwc_context *ctx = _dom_document_get_intern_context(evt->doc);
+ lwc_string *str = NULL;
+ dom_exception err;
+
+ err = _dom_string_intern(type, ctx, &str);
+ if (err != DOM_NO_ERR)
+ return err;
+ evt->type = str;
+
+ err = _dom_string_intern(namespace, ctx, &str);
+ if (err != DOM_NO_ERR)
+ return err;
+ evt->namespace = str;
+
+ evt->bubble = bubble;
+ evt->cancelable = cancelable;
+
+ return DOM_NO_ERR;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-16 09:56:18 +0000