зеркало из https://github.com/mozilla/gecko-dev.git
423 строки
11 KiB
C
423 строки
11 KiB
C
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* JS reflection of applets in the current document
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*/
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/* Please leave outside of ifdef for windows precompiled headers */
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#include "lm.h"
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#if defined(JAVA) || defined(OJI)
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#include "xp.h"
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#include "layout.h"
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#if defined(JAVA)
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#include "java.h"
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#include "lj.h" /* for LJ_InvokeMethod */
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#define IMPLEMENT_netscape_applet_MozillaAppletContext
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#define IMPLEMENT_netscape_applet_EmbeddedObjectNatives
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#ifdef XP_MAC
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#include "n_applet_MozillaAppletContext.h"
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#include "n_a_EmbeddedObjectNatives.h"
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#else
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#include "netscape_applet_MozillaAppletContext.h"
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#include "netscape_applet_EmbeddedObjectNatives.h"
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#endif
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#elif defined(OJI)
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#include "np2.h"
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#include "jni.h"
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#endif /* OJI */
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#include "jsjava.h"
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#include "jsobj.h"
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#include "prlog.h"
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extern PRLogModuleInfo* Moja;
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#define debug PR_LOG_DEBUG
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#define warn PR_LOG_WARN
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JSClass *lm_java_clasp = NULL;
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enum applet_array_slot {
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APPLET_ARRAY_LENGTH = -1
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};
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static JSPropertySpec applet_array_props[] = {
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{lm_length_str, APPLET_ARRAY_LENGTH,
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JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT},
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{0}
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};
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extern JSClass lm_applet_array_class;
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PR_STATIC_CALLBACK(JSBool)
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applet_array_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
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{
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JSObjectArray *array;
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MochaDecoder *decoder;
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MWContext *context;
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jsint count, slot;
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LO_JavaAppStruct *applet_data;
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int32 active_layer_id;
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if (!JSVAL_IS_INT(id))
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return JS_TRUE;
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slot = JSVAL_TO_INT(id);
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array = JS_GetInstancePrivate(cx, obj, &lm_applet_array_class, NULL);
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if (!array)
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return JS_TRUE;
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decoder = array->decoder;
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context = decoder->window_context;
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if (!context)
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return JS_TRUE;
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if (LM_MOJA_OK != ET_InitMoja(context))
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return JS_FALSE;
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LO_LockLayout();
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switch (slot) {
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case APPLET_ARRAY_LENGTH:
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active_layer_id = LM_GetActiveLayer(context);
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LM_SetActiveLayer(context, array->layer_id);
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count = LO_EnumerateApplets(context, array->layer_id);
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LM_SetActiveLayer(context, active_layer_id);
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if (count > array->length)
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array->length = count;
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*vp = INT_TO_JSVAL(array->length);
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break;
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default:
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if (slot < 0) {
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/* Don't mess with user-defined or method properties. */
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LO_UnlockLayout();
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return JS_TRUE;
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}
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applet_data = LO_GetAppletByIndex(context, array->layer_id,
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(uint)slot);
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if (applet_data) {
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JSObject *mo = LM_ReflectApplet(context, applet_data, NULL,
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array->layer_id, (uint)slot);
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if (!mo) {
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JS_ReportError(cx,
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"unable to reflect applet \"%s\", index %d - not loaded yet?",
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applet_data->attr_name, (uint) slot);
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goto err;
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}
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*vp = OBJECT_TO_JSVAL(mo);
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if (slot >= array->length)
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array->length = slot + 1;
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} else {
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JS_ReportError(cx, "no applet with index %d\n");
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goto err;
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}
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break;
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}
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LO_UnlockLayout();
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return JS_TRUE;
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err:
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LO_UnlockLayout();
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return JS_FALSE;
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}
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PR_STATIC_CALLBACK(void)
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applet_array_finalize(JSContext *cx, JSObject *obj)
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{
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JSObjectArray *array;
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array = JS_GetPrivate(cx, obj);
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if (!array)
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return;
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DROP_BACK_COUNT(array->decoder);
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JS_free(cx, array);
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}
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JSClass lm_applet_array_class = {
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"AppletArray", JSCLASS_HAS_PRIVATE,
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JS_PropertyStub, JS_PropertyStub,
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applet_array_getProperty, applet_array_getProperty, JS_EnumerateStub,
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JS_ResolveStub, JS_ConvertStub, applet_array_finalize
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};
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JSObject *
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lm_GetAppletArray(MochaDecoder *decoder, JSObject *document)
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{
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JSContext *cx = decoder->js_context;
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JSObject *obj;
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JSObjectArray *array;
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JSDocument *doc;
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doc = JS_GetPrivate(cx, document);
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if (!doc)
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return NULL;
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obj = doc->applets;
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if (obj)
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return obj;
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array = JS_malloc(cx, sizeof *array);
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if (!array)
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return NULL;
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array->decoder = NULL; /* in case of error below */
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obj = JS_NewObject(cx, &lm_applet_array_class, NULL, document);
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if (!obj || !JS_SetPrivate(cx, obj, array)) {
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JS_free(cx, array);
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return NULL;
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}
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if (!JS_DefineProperties(cx, obj, applet_array_props))
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return NULL;
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array->decoder = HOLD_BACK_COUNT(decoder);
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array->length = 0;
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array->layer_id = doc->layer_id;
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doc->applets = obj;
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return obj;
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}
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static JSObject *
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lm_ReallyReflectApplet(MWContext *context, LO_JavaAppStruct *lo_applet,
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int32 layer_id, uint32 index)
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{
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JSObject *obj;
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MochaDecoder *decoder;
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JSContext *cx;
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#ifdef JAVA
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LJAppletData *ad;
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jref javaobject;
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#endif
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lo_TopState *top_state;
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PRHashTable *map;
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#ifdef OJI
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NPEmbeddedApp* embed;
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LO_CommonPluginStruct *lo_embed = (LO_CommonPluginStruct *)lo_applet;
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jobject javaobject;
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#endif /* OJI */
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PR_LOG(Moja, debug, ("really reflect applet 0x%x\n", lo_applet));
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obj = lo_applet->objTag.mocha_object;
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if (obj)
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return obj;
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decoder = LM_GetMochaDecoder(context);
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if (!decoder)
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return NULL;
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cx = decoder->js_context;
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top_state = lo_GetMochaTopState(context);
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if (top_state->resize_reload) {
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map = lm_GetIdToObjectMap(decoder);
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if (map)
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obj = (JSObject *)PR_HashTableLookup(map,
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LM_GET_MAPPING_KEY(LM_APPLETS, layer_id, index));
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if (obj) {
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lo_applet->objTag.mocha_object = obj;
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return obj;
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}
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}
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#ifdef OJI
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{
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jsval val;
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if (!JVM_IsLiveConnectEnabled()) {
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return lo_embed->mocha_object = lm_DummyObject;
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}
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javaobject = NPL_GetJavaObject(lo_embed);
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if (JSJ_ConvertJavaObjectToJSValue(decoder->js_context, javaobject, &val))
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obj = JSVAL_TO_OBJECT(val);
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}
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#else
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/* set the element to something bad if we can't get the java obj */
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if (!JSJ_IsEnabled()) {
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PR_LOG(Moja, debug, ("reflected applet 0x%x as null\n",
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lo_applet));
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return lo_applet->objTag.mocha_object = lm_DummyObject;
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}
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ad = (LJAppletData *) lo_applet->objTag.session_data;
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if (ad) {
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/* MozillaAppletContext.reflectApplet gets the java applet
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* object out of a hash table given the AppletData pointer
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* as an integer */
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if (ad->selector_type != LO_JAVA_SELECTOR_APPLET)
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javaobject = LJ_InvokeMethod(classEmbeddedObjectNatives,
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methodID_netscape_applet_EmbeddedObjectNatives_reflectObject,
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ad->docID, ad);
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else
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javaobject = LJ_InvokeMethod(classMozillaAppletContext,
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methodID_netscape_applet_MozillaAppletContext_reflectApplet_1,
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ad->docID, ad);
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obj = js_ReflectJObjectToJSObject(decoder->js_context,
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(HObject *)javaobject);
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}
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#endif /* !OJI */
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if( obj == NULL )
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{
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PR_LOG(Moja, warn, ("failed to reflect applet 0x%x\n", lo_applet));
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return NULL;
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}
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map = lm_GetIdToObjectMap(decoder);
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if (map)
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PR_HashTableAdd(map,
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LM_GET_MAPPING_KEY(LM_APPLETS, layer_id, index),
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obj);
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/*
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lj_mozilla_ee->js_context = saved_context;
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*/
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PR_LOG(Moja, debug, ("reflected applet 0x%x (java 0x%x) to 0x%x ok\n",
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lo_applet, javaobject, obj));
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if (obj)
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lm_java_clasp = JS_GetClass(cx, obj);
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return lo_applet->objTag.mocha_object = obj;
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}
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/* XXX what happens if this is called before java starts up?
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* or if java is disabled? */
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#if defined(OJI)
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static char* getValue(struct lo_NVList* nvlist, const char* name)
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{
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int i;
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char** names = nvlist->names;
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char** values = nvlist->values;
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for (i = nvlist->n - 1; i >= 0; --i)
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if (XP_STRCASECMP(names[i], name) == 0)
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return values[i];
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return NULL;
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}
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#endif
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JSObject *
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LM_ReflectApplet(MWContext *context, LO_JavaAppStruct *applet_data,
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PA_Tag * tag, int32 layer_id, uint index)
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{
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JSObject *obj, *array_obj, *outer_obj, *document;
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MochaDecoder *decoder;
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JSContext *cx;
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char *name;
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#ifdef OJI
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LO_EmbedStruct *embed = (LO_EmbedStruct *)applet_data;
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#endif
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obj = applet_data->objTag.mocha_object;
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if (obj)
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return obj;
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decoder = LM_GetMochaDecoder(context);
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if (!decoder)
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return NULL;
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cx = decoder->js_context;
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#ifdef OJI
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/* this is really skanky, but we don't really have a LO_JavaAppStruct, but instead a LO_EmbedStruct. */
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name = getValue(&embed->attributes, "NAME");
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if (name != NULL)
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name = JS_strdup(cx, name);
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#else
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/* get the name */
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if (applet_data->attr_name) {
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name = JS_strdup(cx, (char *) applet_data->attr_name);
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} else {
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name = 0;
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}
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#endif
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/* Get the document object that will hold this applet */
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document = lm_GetDocumentFromLayerId(decoder, layer_id);
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if (!document)
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goto out;
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array_obj = lm_GetAppletArray(decoder, document);
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if (!array_obj) {
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obj = 0;
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goto out;
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}
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/* XXX should pass thru ReallyReflectApplet to whatever calls NewObject */
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outer_obj = lm_GetOuterObject(decoder);
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/* this function does the real work */
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obj = lm_ReallyReflectApplet(context, applet_data, layer_id, index);
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if (!obj)
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/* reflection failed. this usually means that javascript tried
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* to talk to the applet before it was ready. there's not much
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* we can do about it */
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goto out;
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/* put it in the applet array */
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if (!lm_AddObjectToArray(cx, array_obj, name, index, obj)) {
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obj = NULL;
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goto out;
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}
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/* put it in the document scope */
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if (name) {
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if (!JS_DefineProperty(cx, outer_obj, name, OBJECT_TO_JSVAL(obj),
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NULL, NULL,
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JSPROP_ENUMERATE | JSPROP_READONLY)) {
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PR_LOG(Moja, warn, ("failed to define applet 0x%x as %s\n",
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applet_data, name));
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/* XXX remove it altogether? */
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}
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JS_free(cx, name);
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}
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/* cache it in layout data structure XXX lm_ReallyReflectApplet did this */
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XP_ASSERT(applet_data->objTag.mocha_object == obj);
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out:
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LM_PutMochaDecoder(decoder);
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return obj;
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}
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PRIVATE JSObject *
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LM_ReflectNamedApplet(MWContext *context, lo_NameList *name_rec,
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int32 layer_id, uint index)
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{
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return NULL;
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}
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#else
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void *lm_java_clasp = NULL;
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#endif /* !JAVA && !OJI */
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