pjs/lib/libmocha/lm_href.c

696 строки
18 KiB
C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* JS reflection of the HREF and NAME Anchors in the current document.
*
* Brendan Eich, 9/8/95
*/
#include "lm.h"
#include "pa_tags.h"
#include "layout.h" /* XXX for lo_NameList only */
enum anchor_array_slot {
ANCHOR_ARRAY_LENGTH = -1
};
static JSPropertySpec anchor_array_props[] = {
{lm_length_str, ANCHOR_ARRAY_LENGTH,
JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT},
{0}
};
extern JSClass lm_link_array_class;
PR_STATIC_CALLBACK(JSBool)
link_array_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JSObjectArray *array;
MochaDecoder *decoder;
MWContext *context;
jsint count, slot;
LO_AnchorData *anchor_data;
int32 active_layer_id;
if (!JSVAL_IS_INT(id))
return JS_TRUE;
slot = JSVAL_TO_INT(id);
array = JS_GetInstancePrivate(cx, obj, &lm_link_array_class, NULL);
if (!array)
return JS_TRUE;
decoder = array->decoder;
context = decoder->window_context;
if (!context) return JS_TRUE;
LO_LockLayout();
switch (slot) {
case ANCHOR_ARRAY_LENGTH:
active_layer_id = LM_GetActiveLayer(context);
LM_SetActiveLayer(context, array->layer_id);
count = LO_EnumerateLinks(context, array->layer_id);
LM_SetActiveLayer(context, active_layer_id);
if (count > array->length)
array->length = count;
*vp = INT_TO_JSVAL(count);
break;
default:
if (slot < 0) {
/* Don't mess with user-defined or method properties. */
LO_UnlockLayout();
return JS_TRUE;
}
if (slot >= array->length)
array->length = slot + 1;
anchor_data = LO_GetLinkByIndex(context, array->layer_id, (uint)slot);
if (anchor_data) {
*vp = OBJECT_TO_JSVAL(LM_ReflectLink(context, anchor_data, NULL,
array->layer_id, (uint)slot));
}
break;
}
LO_UnlockLayout();
return JS_TRUE;
}
PR_STATIC_CALLBACK(void)
anchor_array_finalize(JSContext *cx, JSObject *obj)
{
JSObjectArray *array;
array = JS_GetPrivate(cx, obj);
if (!array)
return;
DROP_BACK_COUNT(array->decoder);
JS_free(cx, array);
}
JSClass lm_link_array_class = {
"LinkArray", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub,
link_array_getProperty, link_array_getProperty, JS_EnumerateStub,
JS_ResolveStub, JS_ConvertStub, anchor_array_finalize
};
PR_STATIC_CALLBACK(JSBool)
LinkArray(JSContext *cx, JSObject *obj,
uint argc, jsval *argv, jsval *rval)
{
return JS_TRUE;
}
extern JSClass lm_anchor_array_class;
PR_STATIC_CALLBACK(JSBool)
anchor_array_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JSObjectArray *array;
MochaDecoder *decoder;
MWContext *context;
jsint count, slot;
lo_NameList *name_rec;
int32 active_layer_id;
if (!JSVAL_IS_INT(id))
return JS_TRUE;
slot = JSVAL_TO_INT(id);
array = JS_GetInstancePrivate(cx, obj, &lm_anchor_array_class, NULL);
if (!array)
return JS_TRUE;
decoder = array->decoder;
context = decoder->window_context;
if (!context) return JS_TRUE;
LO_LockLayout();
switch (slot) {
case ANCHOR_ARRAY_LENGTH:
active_layer_id = LM_GetActiveLayer(context);
LM_SetActiveLayer(context, array->layer_id);
count = LO_EnumerateNamedAnchors(context, array->layer_id);
LM_SetActiveLayer(context, active_layer_id);
if (count > array->length)
array->length = count;
*vp = INT_TO_JSVAL(count);
break;
default:
if (slot >= array->length)
array->length = slot + 1;
name_rec = LO_GetNamedAnchorByIndex(context, array->layer_id,
(uint)slot);
if (name_rec) {
*vp = OBJECT_TO_JSVAL(LM_ReflectNamedAnchor(context, name_rec,
NULL, array->layer_id,
(uint)slot));
}
break;
}
LO_UnlockLayout();
return JS_TRUE;
}
JSClass lm_anchor_array_class = {
"AnchorArray", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub,
anchor_array_getProperty, anchor_array_getProperty, JS_EnumerateStub,
JS_ResolveStub, JS_ConvertStub, anchor_array_finalize
};
PR_STATIC_CALLBACK(JSBool)
AnchorArray(JSContext *cx, JSObject *obj,
uint argc, jsval *argv, jsval *rval)
{
return JS_TRUE;
}
static JSObject *
reflect_anchor_array(MochaDecoder *decoder, JSClass *clasp,
JSNative constructor, JSObject *document)
{
JSContext *cx;
JSObject *obj, *prototype;
JSObjectArray *array;
JSDocument *doc;
cx = decoder->js_context;
doc = JS_GetPrivate(cx, document);
if (!doc)
return NULL;
prototype = JS_InitClass(cx, decoder->window_object, NULL,
clasp, constructor, 0,
anchor_array_props, NULL, NULL, NULL);
if (!prototype)
return NULL;
array = JS_malloc(cx, sizeof *array);
if (!array)
return NULL;
XP_BZERO(array, sizeof *array);
obj = JS_NewObject(cx, clasp, prototype, document);
if (!obj || !JS_SetPrivate(cx, obj, array)) {
JS_free(cx, array);
return NULL;
}
array->decoder = HOLD_BACK_COUNT(decoder);
array->layer_id = doc->layer_id;
return obj;
}
JSObject *
lm_GetLinkArray(MochaDecoder *decoder, JSObject *document)
{
JSObject *obj;
JSDocument *doc;
doc = JS_GetPrivate(decoder->js_context, document);
if (!doc)
return NULL;
obj = doc->links;
if (obj)
return obj;
obj = reflect_anchor_array(decoder, &lm_link_array_class, LinkArray,
document);
doc->links = obj;
return obj;
}
JSObject *
lm_GetNameArray(MochaDecoder *decoder, JSObject *document)
{
JSObject *obj;
JSDocument *doc;
doc = JS_GetPrivate(decoder->js_context, document);
if (!doc)
return NULL;
obj = doc->anchors;
if (obj)
return obj;
obj = reflect_anchor_array(decoder, &lm_anchor_array_class, AnchorArray,
document);
doc->anchors = obj;
return obj;
}
JSObject *
LM_ReflectLink(MWContext *context, LO_AnchorData *anchor_data, PA_Tag * tag,
int32 layer_id, uint index)
{
JSObject *obj, *array_obj, *document;
MochaDecoder *decoder;
JSContext *cx;
JSURL *url;
lo_TopState *top_state;
PRHashTable *map;
anchor_data = LO_GetLinkByIndex(context, layer_id, index);
if (!anchor_data)
return NULL;
obj = anchor_data->mocha_object;
if (obj)
return obj;
decoder = LM_GetMochaDecoder(context);
if (!decoder)
return NULL;
cx = decoder->js_context;
top_state = lo_GetMochaTopState(context);
if (top_state->resize_reload) {
map = lm_GetIdToObjectMap(decoder);
if (map)
obj = (JSObject *)PR_HashTableLookup(map,
LM_GET_MAPPING_KEY(LM_LINKS, layer_id, index));
if (obj) {
anchor_data->mocha_object = obj;
LM_PutMochaDecoder(decoder);
return obj;
}
}
/* Get the document object that will hold this link */
document = lm_GetDocumentFromLayerId(decoder, layer_id);
if (!document) {
LM_PutMochaDecoder(decoder);
return NULL;
}
array_obj = lm_GetLinkArray(decoder, document);
if (!array_obj) {
LM_PutMochaDecoder(decoder);
return NULL;
}
url = lm_NewURL(cx, decoder, anchor_data, document);
if (!url) {
LM_PutMochaDecoder(decoder);
return NULL;
}
url->index = index;
url->layer_id = layer_id;
obj = url->url_object;
/* XXX should find a name/id to pass in */
/* put it in the links array */
if (!lm_AddObjectToArray(cx, array_obj, NULL, index, obj)) {
LM_PutMochaDecoder(decoder);
return NULL;
}
/* Put it in the index to object hash table */
map = lm_GetIdToObjectMap(decoder);
if (map)
PR_HashTableAdd(map, LM_GET_MAPPING_KEY(LM_LINKS, layer_id, index),
obj);
anchor_data->mocha_object = obj;
LM_PutMochaDecoder(decoder);
/* see if there are any event handlers we need to reflect */
if(tag) {
PA_Block onclick, onmouseover, onmouseout, onmousedown, onmouseup, ondblclick, id;
/* don't hold the layout lock across compiles */
LO_UnlockLayout();
onclick = lo_FetchParamValue(context, tag, PARAM_ONCLICK);
onmouseover = lo_FetchParamValue(context, tag, PARAM_ONMOUSEOVER);
onmouseout = lo_FetchParamValue(context, tag, PARAM_ONMOUSEOUT);
onmousedown = lo_FetchParamValue(context, tag, PARAM_ONMOUSEDOWN);
onmouseup = lo_FetchParamValue(context, tag, PARAM_ONMOUSEUP);
ondblclick = lo_FetchParamValue(context, tag, PARAM_ONDBLCLICK);
id = lo_FetchParamValue(context, tag, PARAM_ID);
if (onclick) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONCLICK, onclick);
PA_FREE(onclick);
anchor_data->event_handler_present = TRUE;
}
if (onmouseover) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONMOUSEOVER, onmouseover);
PA_FREE(onmouseover);
anchor_data->event_handler_present = TRUE;
}
if (onmouseout) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONMOUSEOUT, onmouseout);
PA_FREE(onmouseout);
anchor_data->event_handler_present = TRUE;
}
if (onmousedown) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONMOUSEDOWN, onmousedown);
PA_FREE(onmousedown);
anchor_data->event_handler_present = TRUE;
}
if (onmouseup) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONMOUSEUP, onmouseup);
PA_FREE(onmouseup);
anchor_data->event_handler_present = TRUE;
}
if (ondblclick) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, url->url_object,
PARAM_ONDBLCLICK, ondblclick);
PA_FREE(ondblclick);
anchor_data->event_handler_present = TRUE;
}
if (id)
PA_FREE(id);
LO_LockLayout();
}
return obj;
}
/*
* XXX chouck - the onLocate stuff hasn't been implemented yet
* so just return JS_TRUE and go away
*/
JSBool
LM_SendOnLocate(MWContext *context, lo_NameList *name_rec)
{
JSBool ok;
JSObject *obj;
jsval result;
JSEvent *event;
return JS_TRUE;
obj = name_rec->mocha_object;
if (!obj)
return JS_FALSE;
event = XP_NEW_ZAP(JSEvent);
event->type = EVENT_LOCATE;
ok = lm_SendEvent(context, obj, event, &result);
return ok;
}
/* Anchor property slots. */
enum anchor_slot {
ANCHOR_TEXT = -1,
ANCHOR_NAME = -2,
ANCHOR_X = -3,
ANCHOR_Y = -4
};
/* Static anchor properties. */
static JSPropertySpec anchor_props[] = {
{"text", ANCHOR_TEXT, JSPROP_ENUMERATE | JSPROP_READONLY},
{"name", ANCHOR_NAME, JSPROP_ENUMERATE | JSPROP_READONLY},
{"x", ANCHOR_X, JSPROP_ENUMERATE | JSPROP_READONLY},
{"y", ANCHOR_Y, JSPROP_ENUMERATE | JSPROP_READONLY},
{0}
};
/* Base anchor element type. */
typedef struct JSAnchor {
MochaDecoder *decoder;
int32 layer_id;
uint index;
JSString *text;
JSString *name;
} JSAnchor;
extern JSClass lm_anchor_class;
PR_STATIC_CALLBACK(JSBool)
anchor_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JSAnchor *named_anchor;
lo_NameList *name_rec;
jsint slot;
if (!JSVAL_IS_INT(id))
return JS_TRUE;
slot = JSVAL_TO_INT(id);
named_anchor = JS_GetInstancePrivate(cx, obj, &lm_anchor_class, NULL);
if (!named_anchor)
return JS_TRUE;
LO_LockLayout();
name_rec = LO_GetNamedAnchorByIndex(named_anchor->decoder->window_context,
named_anchor->layer_id,
named_anchor->index);
if (!name_rec) {
LO_UnlockLayout();
return JS_TRUE; /* Try to handle this case gracefully. */
}
switch (slot) {
case ANCHOR_TEXT:
if (named_anchor->text)
*vp = STRING_TO_JSVAL(named_anchor->text);
else
*vp = JSVAL_NULL;
break;
case ANCHOR_NAME:
if (named_anchor->name)
*vp = STRING_TO_JSVAL(named_anchor->name);
else
*vp = JSVAL_NULL;
break;
case ANCHOR_X:
*vp = INT_TO_JSVAL(name_rec->element->lo_any.x);
break;
case ANCHOR_Y:
*vp = INT_TO_JSVAL(name_rec->element->lo_any.y);
break;
default:
/* Don't mess with a user-defined or method property. */
break;
}
LO_UnlockLayout();
return JS_TRUE;
}
PR_STATIC_CALLBACK(void)
anchor_finalize(JSContext *cx, JSObject *obj)
{
JSAnchor *named_anchor;
MochaDecoder *decoder;
MWContext *context;
lo_NameList *name_rec;
named_anchor = JS_GetPrivate(cx, obj);
if (!named_anchor)
return;
decoder = named_anchor->decoder;
context = decoder->window_context;
if (context) {
LO_LockLayout();
name_rec = LO_GetNamedAnchorByIndex(context, named_anchor->layer_id,
named_anchor->index);
if (name_rec && name_rec->mocha_object == obj)
name_rec->mocha_object = NULL;
LO_UnlockLayout();
}
DROP_BACK_COUNT(decoder);
JS_UnlockGCThing(cx, named_anchor->text);
JS_UnlockGCThing(cx, named_anchor->name);
JS_free(cx, named_anchor);
}
/* Named anchors are read only, so there is no anchor_setProperty. */
JSClass lm_anchor_class = {
"Anchor", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub, anchor_getProperty, anchor_getProperty,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, anchor_finalize
};
PR_STATIC_CALLBACK(JSBool)
Anchor(JSContext *cx, JSObject *obj,
uint argc, jsval *argv, jsval *rval)
{
return JS_TRUE;
}
JSObject *
LM_ReflectNamedAnchor(MWContext *context, lo_NameList *name_rec,
PA_Tag * tag, int32 layer_id, uint index)
{
JSObject *obj, *array_obj, *document;
MochaDecoder *decoder;
JSContext *cx;
JSObjectArray *array;
JSAnchor *named_anchor;
lo_TopState *top_state;
PRHashTable *map;
JSString *str;
obj = name_rec->mocha_object;
if (obj)
return obj;
decoder = LM_GetMochaDecoder(context);
if (!decoder)
return NULL;
cx = decoder->js_context;
top_state = lo_GetMochaTopState(context);
if (top_state->resize_reload) {
map = lm_GetIdToObjectMap(decoder);
if (map)
obj = (JSObject *)PR_HashTableLookup(map,
LM_GET_MAPPING_KEY(LM_NAMEDANCHORS,
layer_id, index));
if (obj) {
name_rec->mocha_object = obj;
LM_PutMochaDecoder(decoder);
return obj;
}
}
/* Get the document object that will hold this anchor */
document = lm_GetDocumentFromLayerId(decoder, layer_id);
if (!document) {
LM_PutMochaDecoder(decoder);
return NULL;
}
array_obj = lm_GetNameArray(decoder, document);
if (!array_obj) {
LM_PutMochaDecoder(decoder);
return NULL;
}
array = JS_GetPrivate(cx, array_obj);
if (!array) {
LM_PutMochaDecoder(decoder);
return NULL;
}
named_anchor = JS_malloc(cx, sizeof *named_anchor);
if (!named_anchor) {
LM_PutMochaDecoder(decoder);
return NULL;
}
XP_BZERO(named_anchor, sizeof *named_anchor);
obj = JS_NewObject(cx, &lm_anchor_class, decoder->anchor_prototype,
document);
if (!obj || !JS_SetPrivate(cx, obj, named_anchor)) {
JS_free(cx, named_anchor);
LM_PutMochaDecoder(decoder);
return NULL;
}
/* Put obj into the document.anchors array. */
JS_DefineProperty(cx, array_obj, (char *) name_rec->name,
OBJECT_TO_JSVAL(obj), NULL, NULL,
JSPROP_ENUMERATE|JSPROP_READONLY);
JS_AliasElement(cx, array_obj, (char *) name_rec->name, index);
/* Put it in the index to object hash table */
map = lm_GetIdToObjectMap(decoder);
if (map) {
PR_HashTableAdd(map,
LM_GET_MAPPING_KEY(LM_NAMEDANCHORS, layer_id, index),
obj);
}
if ((jsint) index >= array->length)
array->length = index + 1;
named_anchor->decoder = HOLD_BACK_COUNT(decoder);
named_anchor->layer_id = layer_id;
named_anchor->index = index;
if (name_rec->element && name_rec->element->type == LO_TEXT) {
str = lm_LocalEncodingToStr(context,
(char *) name_rec->element->lo_text.text);
if (!str || !JS_LockGCThing(cx, str)) {
LM_PutMochaDecoder(decoder);
return NULL;
}
named_anchor->text = str;
}
str = JS_NewStringCopyZ(cx, (char *) name_rec->name);
if (!str || !JS_LockGCThing(cx, str)) {
LM_PutMochaDecoder(decoder);
return NULL;
}
named_anchor->name = str;
name_rec->mocha_object = obj;
/* see if there are any attributes for event handlers */
if(tag) {
PA_Block onlocate, id;
/* don't hold the layout lock across compiles */
LO_UnlockLayout();
onlocate = lo_FetchParamValue(context, tag, PARAM_ONLOCATE);
id = lo_FetchParamValue(context, tag, PARAM_ID);
if (onlocate) {
(void) lm_CompileEventHandler(decoder, id, tag->data,
tag->newline_count, obj,
PARAM_ONLOCATE, onlocate);
PA_FREE(onlocate);
}
if (id)
PA_FREE(id);
LO_LockLayout();
}
LM_PutMochaDecoder(decoder);
return obj;
}
JSBool
lm_InitAnchorClass(MochaDecoder *decoder)
{
JSContext *cx;
JSObject *prototype;
cx = decoder->js_context;
prototype = JS_InitClass(cx, decoder->window_object,
decoder->event_receiver_prototype,
&lm_anchor_class, Anchor, 0,
anchor_props, NULL, NULL, NULL);
if (!prototype)
return JS_FALSE;
decoder->anchor_prototype = prototype;
return JS_TRUE;
}