gecko-dev/lib/libmocha/lm_applt.c

427 lines
11 KiB
C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
/*
* JS reflection of applets in the current document
*/
/* Please leave outside of ifdef for windows precompiled headers */
#include "lm.h"
#if defined(JAVA) || defined(OJI)
#include "xp.h"
#include "layout.h"
#if defined(JAVA)
#include "java.h"
#include "lj.h" /* for LJ_InvokeMethod */
#define IMPLEMENT_netscape_applet_MozillaAppletContext
#define IMPLEMENT_netscape_applet_EmbeddedObjectNatives
#ifdef XP_MAC
#include "n_applet_MozillaAppletContext.h"
#include "n_a_EmbeddedObjectNatives.h"
#else
#include "netscape_applet_MozillaAppletContext.h"
#include "netscape_applet_EmbeddedObjectNatives.h"
#endif
#elif defined(OJI)
#include "np2.h"
#include "jni.h"
#endif /* OJI */
#include "jsjava.h"
#include "jsobj.h"
#include "prlog.h"
extern PRLogModuleInfo* Moja;
#define debug PR_LOG_DEBUG
#define warn PR_LOG_WARN
JSClass *lm_java_clasp = NULL;
enum applet_array_slot {
APPLET_ARRAY_LENGTH = -1
};
static JSPropertySpec applet_array_props[] = {
{lm_length_str, APPLET_ARRAY_LENGTH,
JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT},
{0}
};
extern JSClass lm_applet_array_class;
PR_STATIC_CALLBACK(JSBool)
applet_array_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
JSObjectArray *array;
MochaDecoder *decoder;
MWContext *context;
jsint count, slot;
LO_JavaAppStruct *applet_data;
int32 active_layer_id;
if (!JSVAL_IS_INT(id))
return JS_TRUE;
slot = JSVAL_TO_INT(id);
array = JS_GetInstancePrivate(cx, obj, &lm_applet_array_class, NULL);
if (!array)
return JS_TRUE;
decoder = array->decoder;
context = decoder->window_context;
if (!context)
return JS_TRUE;
if (LM_MOJA_OK != ET_InitMoja(context))
return JS_FALSE;
LO_LockLayout();
switch (slot) {
case APPLET_ARRAY_LENGTH:
active_layer_id = LM_GetActiveLayer(context);
LM_SetActiveLayer(context, array->layer_id);
count = LO_EnumerateApplets(context, array->layer_id);
LM_SetActiveLayer(context, active_layer_id);
if (count > array->length)
array->length = count;
*vp = INT_TO_JSVAL(array->length);
break;
default:
if (slot < 0) {
/* Don't mess with user-defined or method properties. */
LO_UnlockLayout();
return JS_TRUE;
}
applet_data = LO_GetAppletByIndex(context, array->layer_id,
(uint)slot);
if (applet_data) {
JSObject *mo = LM_ReflectApplet(context, applet_data, NULL,
array->layer_id, (uint)slot);
if (!mo) {
JS_ReportError(cx,
"unable to reflect applet \"%s\", index %d - not loaded yet?",
applet_data->attr_name, (uint) slot);
goto err;
}
*vp = OBJECT_TO_JSVAL(mo);
if (slot >= array->length)
array->length = slot + 1;
} else {
JS_ReportError(cx, "no applet with index %d\n");
goto err;
}
break;
}
LO_UnlockLayout();
return JS_TRUE;
err:
LO_UnlockLayout();
return JS_FALSE;
}
PR_STATIC_CALLBACK(void)
applet_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_applet_array_class = {
"AppletArray", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub,
applet_array_getProperty, applet_array_getProperty, JS_EnumerateStub,
JS_ResolveStub, JS_ConvertStub, applet_array_finalize
};
JSObject *
lm_GetAppletArray(MochaDecoder *decoder, JSObject *document)
{
JSContext *cx = decoder->js_context;
JSObject *obj;
JSObjectArray *array;
JSDocument *doc;
doc = JS_GetPrivate(cx, document);
if (!doc)
return NULL;
obj = doc->applets;
if (obj)
return obj;
array = JS_malloc(cx, sizeof *array);
if (!array)
return NULL;
array->decoder = NULL; /* in case of error below */
obj = JS_NewObject(cx, &lm_applet_array_class, NULL, document);
if (!obj || !JS_SetPrivate(cx, obj, array)) {
JS_free(cx, array);
return NULL;
}
if (!JS_DefineProperties(cx, obj, applet_array_props))
return NULL;
array->decoder = HOLD_BACK_COUNT(decoder);
array->length = 0;
array->layer_id = doc->layer_id;
doc->applets = obj;
return obj;
}
static JSObject *
lm_ReallyReflectApplet(MWContext *context, LO_JavaAppStruct *lo_applet,
int32 layer_id, uint32 index)
{
JSObject *obj;
MochaDecoder *decoder;
JSContext *cx;
#ifdef JAVA
LJAppletData *ad;
jref javaobject;
#endif
lo_TopState *top_state;
PRHashTable *map;
#ifdef OJI
NPEmbeddedApp* embed;
LO_CommonPluginStruct *lo_embed = (LO_CommonPluginStruct *)lo_applet;
jobject javaobject;
#endif /* OJI */
PR_LOG(Moja, debug, ("really reflect applet 0x%x\n", lo_applet));
obj = lo_applet->objTag.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_APPLETS, layer_id, index));
if (obj) {
lo_applet->objTag.mocha_object = obj;
return obj;
}
}
#ifdef OJI
{
jsval val;
if (!JVM_IsLiveConnectEnabled()) {
return lo_embed->mocha_object = lm_DummyObject;
}
javaobject = NPL_GetJavaObject(lo_embed);
if (JSJ_ConvertJavaObjectToJSValue(decoder->js_context, javaobject, &val))
obj = JSVAL_TO_OBJECT(val);
}
#else
/* set the element to something bad if we can't get the java obj */
if (!JSJ_IsEnabled()) {
PR_LOG(Moja, debug, ("reflected applet 0x%x as null\n",
lo_applet));
return lo_applet->objTag.mocha_object = lm_DummyObject;
}
ad = (LJAppletData *) lo_applet->objTag.session_data;
if (ad) {
/* MozillaAppletContext.reflectApplet gets the java applet
* object out of a hash table given the AppletData pointer
* as an integer */
if (ad->selector_type != LO_JAVA_SELECTOR_APPLET)
javaobject = LJ_InvokeMethod(classEmbeddedObjectNatives,
methodID_netscape_applet_EmbeddedObjectNatives_reflectObject,
ad->docID, ad);
else
javaobject = LJ_InvokeMethod(classMozillaAppletContext,
methodID_netscape_applet_MozillaAppletContext_reflectApplet_1,
ad->docID, ad);
obj = js_ReflectJObjectToJSObject(decoder->js_context,
(HObject *)javaobject);
}
#endif /* !OJI */
if( obj == NULL )
{
PR_LOG(Moja, warn, ("failed to reflect applet 0x%x\n", lo_applet));
return NULL;
}
map = lm_GetIdToObjectMap(decoder);
if (map)
PR_HashTableAdd(map,
LM_GET_MAPPING_KEY(LM_APPLETS, layer_id, index),
obj);
/*
lj_mozilla_ee->js_context = saved_context;
*/
PR_LOG(Moja, debug, ("reflected applet 0x%x (java 0x%x) to 0x%x ok\n",
lo_applet, javaobject, obj));
if (obj)
lm_java_clasp = JS_GetClass(cx, obj);
return lo_applet->objTag.mocha_object = obj;
}
/* XXX what happens if this is called before java starts up?
* or if java is disabled? */
#if defined(OJI)
static char* getValue(struct lo_NVList* nvlist, const char* name)
{
int i;
char** names = nvlist->names;
char** values = nvlist->values;
for (i = nvlist->n - 1; i >= 0; --i)
if (XP_STRCASECMP(names[i], name) == 0)
return values[i];
return NULL;
}
#endif
JSObject *
LM_ReflectApplet(MWContext *context, LO_JavaAppStruct *applet_data,
PA_Tag * tag, int32 layer_id, uint index)
{
JSObject *obj, *array_obj, *outer_obj, *document;
MochaDecoder *decoder;
JSContext *cx;
char *name;
#ifdef OJI
LO_EmbedStruct *embed = (LO_EmbedStruct *)applet_data;
#endif
obj = applet_data->objTag.mocha_object;
if (obj)
return obj;
decoder = LM_GetMochaDecoder(context);
if (!decoder)
return NULL;
cx = decoder->js_context;
#ifdef OJI
/* this is really skanky, but we don't really have a LO_JavaAppStruct, but instead a LO_EmbedStruct. */
name = getValue(&embed->attributes, "NAME");
if (name != NULL)
name = JS_strdup(cx, name);
#else
/* get the name */
if (applet_data->attr_name) {
name = JS_strdup(cx, (char *) applet_data->attr_name);
} else {
name = 0;
}
#endif
/* Get the document object that will hold this applet */
document = lm_GetDocumentFromLayerId(decoder, layer_id);
if (!document)
goto out;
array_obj = lm_GetAppletArray(decoder, document);
if (!array_obj) {
obj = 0;
goto out;
}
/* XXX should pass thru ReallyReflectApplet to whatever calls NewObject */
outer_obj = lm_GetOuterObject(decoder);
/* this function does the real work */
obj = lm_ReallyReflectApplet(context, applet_data, layer_id, index);
if (!obj)
/* reflection failed. this usually means that javascript tried
* to talk to the applet before it was ready. there's not much
* we can do about it */
goto out;
/* put it in the applet array */
if (!lm_AddObjectToArray(cx, array_obj, name, index, obj)) {
obj = NULL;
goto out;
}
/* put it in the document scope */
if (name) {
if (!JS_DefineProperty(cx, outer_obj, name, OBJECT_TO_JSVAL(obj),
NULL, NULL,
JSPROP_ENUMERATE | JSPROP_READONLY)) {
PR_LOG(Moja, warn, ("failed to define applet 0x%x as %s\n",
applet_data, name));
/* XXX remove it altogether? */
}
JS_free(cx, name);
}
/* cache it in layout data structure XXX lm_ReallyReflectApplet did this */
XP_ASSERT(applet_data->objTag.mocha_object == obj);
out:
LM_PutMochaDecoder(decoder);
return obj;
}
PRIVATE JSObject *
LM_ReflectNamedApplet(MWContext *context, lo_NameList *name_rec,
int32 layer_id, uint index)
{
return NULL;
}
#else
void *lm_java_clasp = NULL;
#endif /* !JAVA && !OJI */