1/*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "public/web/WebBindings.h"
33
34#include "V8Element.h"
35#include "V8Range.h"
36#include "bindings/v8/NPV8Object.h"  // for PrivateIdentifier
37#include "bindings/v8/ScriptController.h"
38#include "bindings/v8/V8DOMWrapper.h"
39#include "bindings/v8/V8NPObject.h"
40#include "bindings/v8/V8NPUtils.h"
41#include "bindings/v8/custom/V8ArrayBufferCustom.h"
42#include "bindings/v8/custom/V8ArrayBufferViewCustom.h"
43#include "bindings/v8/npruntime_impl.h"
44#include "bindings/v8/npruntime_priv.h"
45#include "core/dom/Range.h"
46#include "core/frame/LocalDOMWindow.h"
47#include "core/frame/LocalFrame.h"
48#include "public/platform/WebArrayBuffer.h"
49#include "public/web/WebArrayBufferView.h"
50#include "public/web/WebElement.h"
51#include "public/web/WebRange.h"
52#include "wtf/ArrayBufferView.h"
53
54using namespace WebCore;
55
56namespace blink {
57
58bool WebBindings::construct(NPP npp, NPObject* object, const NPVariant* args, uint32_t argCount, NPVariant* result)
59{
60    return _NPN_Construct(npp, object, args, argCount, result);
61}
62
63NPObject* WebBindings::createObject(NPP npp, NPClass* npClass)
64{
65    return _NPN_CreateObject(npp, npClass);
66}
67
68bool WebBindings::enumerate(NPP npp, NPObject* object, NPIdentifier** identifier, uint32_t* identifierCount)
69{
70    return _NPN_Enumerate(npp, object, identifier, identifierCount);
71}
72
73bool WebBindings::evaluate(NPP npp, NPObject* object, NPString* script, NPVariant* result)
74{
75    return _NPN_Evaluate(npp, object, script, result);
76}
77
78bool WebBindings::evaluateHelper(NPP npp, bool popupsAllowed, NPObject* object, NPString* script, NPVariant* result)
79{
80    return _NPN_EvaluateHelper(npp, popupsAllowed, object, script, result);
81}
82
83NPIdentifier WebBindings::getIntIdentifier(int32_t number)
84{
85    return _NPN_GetIntIdentifier(number);
86}
87
88bool WebBindings::getProperty(NPP npp, NPObject* object, NPIdentifier property, NPVariant* result)
89{
90    return _NPN_GetProperty(npp, object, property, result);
91}
92
93NPIdentifier WebBindings::getStringIdentifier(const NPUTF8* string)
94{
95    return _NPN_GetStringIdentifier(string);
96}
97
98void WebBindings::getStringIdentifiers(const NPUTF8** names, int32_t nameCount, NPIdentifier* identifiers)
99{
100    _NPN_GetStringIdentifiers(names, nameCount, identifiers);
101}
102
103bool WebBindings::hasMethod(NPP npp, NPObject* object, NPIdentifier method)
104{
105    return _NPN_HasMethod(npp, object, method);
106}
107
108bool WebBindings::hasProperty(NPP npp, NPObject* object, NPIdentifier property)
109{
110    return _NPN_HasProperty(npp, object, property);
111}
112
113bool WebBindings::identifierIsString(NPIdentifier identifier)
114{
115    return _NPN_IdentifierIsString(identifier);
116}
117
118int32_t WebBindings::intFromIdentifier(NPIdentifier identifier)
119{
120    return _NPN_IntFromIdentifier(identifier);
121}
122
123void WebBindings::initializeVariantWithStringCopy(NPVariant* variant, const NPString* value)
124{
125    _NPN_InitializeVariantWithStringCopy(variant, value);
126}
127
128bool WebBindings::invoke(NPP npp, NPObject* object, NPIdentifier method, const NPVariant* args, uint32_t argCount, NPVariant* result)
129{
130    return _NPN_Invoke(npp, object, method, args, argCount, result);
131}
132
133bool WebBindings::invokeDefault(NPP npp, NPObject* object, const NPVariant* args, uint32_t argCount, NPVariant* result)
134{
135    return _NPN_InvokeDefault(npp, object, args, argCount, result);
136}
137
138void WebBindings::releaseObject(NPObject* object)
139{
140    return _NPN_ReleaseObject(object);
141}
142
143void WebBindings::releaseVariantValue(NPVariant* variant)
144{
145    _NPN_ReleaseVariantValue(variant);
146}
147
148bool WebBindings::removeProperty(NPP npp, NPObject* object, NPIdentifier identifier)
149{
150    return _NPN_RemoveProperty(npp, object, identifier);
151}
152
153NPObject* WebBindings::retainObject(NPObject* object)
154{
155    return _NPN_RetainObject(object);
156}
157
158void WebBindings::setException(NPObject* object, const NPUTF8* message)
159{
160    _NPN_SetException(object, message);
161}
162
163bool WebBindings::setProperty(NPP npp, NPObject* object, NPIdentifier identifier, const NPVariant* value)
164{
165    return _NPN_SetProperty(npp, object, identifier, value);
166}
167
168void WebBindings::registerObjectOwner(NPP)
169{
170}
171
172void WebBindings::unregisterObjectOwner(NPP)
173{
174}
175
176NPP WebBindings::getObjectOwner(NPObject*)
177{
178    return 0;
179}
180
181void WebBindings::unregisterObject(NPObject* object)
182{
183    _NPN_UnregisterObject(object);
184}
185
186void WebBindings::dropV8WrapperForObject(NPObject* object)
187{
188    WebCore::forgetV8ObjectForNPObject(object);
189}
190
191NPUTF8* WebBindings::utf8FromIdentifier(NPIdentifier identifier)
192{
193    return _NPN_UTF8FromIdentifier(identifier);
194}
195
196void WebBindings::extractIdentifierData(const NPIdentifier& identifier, const NPUTF8*& string, int32_t& number, bool& isString)
197{
198    PrivateIdentifier* data = static_cast<PrivateIdentifier*>(identifier);
199    if (!data) {
200        isString = false;
201        number = 0;
202        return;
203    }
204
205    isString = data->isString;
206    if (isString)
207        string = data->value.string;
208    else
209        number = data->value.number;
210}
211
212static bool getRangeImpl(NPObject* object, WebRange* webRange, v8::Isolate* isolate)
213{
214    if (!object)
215        return false;
216
217    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
218    if (!v8NPObject)
219        return false;
220
221    v8::HandleScope handleScope(isolate);
222    v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
223    if (v8Object.IsEmpty())
224        return false;
225    if (!V8Range::wrapperTypeInfo.equals(toWrapperTypeInfo(v8Object)))
226        return false;
227
228    Range* native = V8Range::hasInstance(v8Object, isolate) ? V8Range::toNative(v8Object) : 0;
229    if (!native)
230        return false;
231
232    *webRange = WebRange(native);
233    return true;
234}
235
236static bool getNodeImpl(NPObject* object, WebNode* webNode, v8::Isolate* isolate)
237{
238    if (!object)
239        return false;
240
241    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
242    if (!v8NPObject)
243        return false;
244
245    v8::HandleScope handleScope(isolate);
246    v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
247    if (v8Object.IsEmpty())
248        return false;
249    Node* native = V8Node::hasInstance(v8Object, isolate) ? V8Node::toNative(v8Object) : 0;
250    if (!native)
251        return false;
252
253    *webNode = WebNode(native);
254    return true;
255}
256
257static bool getElementImpl(NPObject* object, WebElement* webElement, v8::Isolate* isolate)
258{
259    if (!object)
260        return false;
261
262    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
263    if (!v8NPObject)
264        return false;
265
266    v8::HandleScope handleScope(isolate);
267    v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
268    if (v8Object.IsEmpty())
269        return false;
270    Element* native = V8Element::hasInstance(v8Object, isolate) ? V8Element::toNative(v8Object) : 0;
271    if (!native)
272        return false;
273
274    *webElement = WebElement(native);
275    return true;
276}
277
278static bool getArrayBufferImpl(NPObject* object, WebArrayBuffer* arrayBuffer, v8::Isolate* isolate)
279{
280    if (!object)
281        return false;
282
283    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
284    if (!v8NPObject)
285        return false;
286
287    v8::HandleScope handleScope(isolate);
288    v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
289    if (v8Object.IsEmpty())
290        return false;
291    ArrayBuffer* native = V8ArrayBuffer::hasInstance(v8Object, isolate) ? V8ArrayBuffer::toNative(v8Object) : 0;
292    if (!native)
293        return false;
294
295    *arrayBuffer = WebArrayBuffer(native);
296    return true;
297}
298
299static bool getArrayBufferViewImpl(NPObject* object, WebArrayBufferView* arrayBufferView, v8::Isolate* isolate)
300{
301    if (!object)
302        return false;
303
304    V8NPObject* v8NPObject = npObjectToV8NPObject(object);
305    if (!v8NPObject)
306        return false;
307
308    v8::HandleScope handleScope(isolate);
309    v8::Handle<v8::Object> v8Object = v8::Local<v8::Object>::New(isolate, v8NPObject->v8Object);
310    if (v8Object.IsEmpty())
311        return false;
312    ArrayBufferView* native = V8ArrayBufferView::hasInstance(v8Object, isolate) ? V8ArrayBufferView::toNative(v8Object) : 0;
313    if (!native)
314        return false;
315
316    *arrayBufferView = WebArrayBufferView(native);
317    return true;
318}
319
320static NPObject* makeIntArrayImpl(const WebVector<int>& data, v8::Isolate* isolate)
321{
322    v8::HandleScope handleScope(isolate);
323    v8::Handle<v8::Array> result = v8::Array::New(isolate, data.size());
324    for (size_t i = 0; i < data.size(); ++i)
325        result->Set(i, v8::Number::New(isolate, data[i]));
326
327    LocalDOMWindow* window = currentDOMWindow(isolate);
328    return npCreateV8ScriptObject(0, result, window, isolate);
329}
330
331static NPObject* makeStringArrayImpl(const WebVector<WebString>& data, v8::Isolate* isolate)
332{
333    v8::HandleScope handleScope(isolate);
334    v8::Handle<v8::Array> result = v8::Array::New(isolate, data.size());
335    for (size_t i = 0; i < data.size(); ++i)
336        result->Set(i, v8String(isolate, data[i]));
337
338    LocalDOMWindow* window = currentDOMWindow(isolate);
339    return npCreateV8ScriptObject(0, result, window, isolate);
340}
341
342bool WebBindings::getRange(NPObject* range, WebRange* webRange)
343{
344    return getRangeImpl(range, webRange, v8::Isolate::GetCurrent());
345}
346
347bool WebBindings::getArrayBuffer(NPObject* arrayBuffer, WebArrayBuffer* webArrayBuffer)
348{
349    return getArrayBufferImpl(arrayBuffer, webArrayBuffer, v8::Isolate::GetCurrent());
350}
351
352bool WebBindings::getArrayBufferView(NPObject* arrayBufferView, WebArrayBufferView* webArrayBufferView)
353{
354    return getArrayBufferViewImpl(arrayBufferView, webArrayBufferView, v8::Isolate::GetCurrent());
355}
356
357bool WebBindings::getNode(NPObject* node, WebNode* webNode)
358{
359    return getNodeImpl(node, webNode, v8::Isolate::GetCurrent());
360}
361
362bool WebBindings::getElement(NPObject* element, WebElement* webElement)
363{
364    return getElementImpl(element, webElement, v8::Isolate::GetCurrent());
365}
366
367NPObject* WebBindings::makeIntArray(const WebVector<int>& data)
368{
369    return makeIntArrayImpl(data, v8::Isolate::GetCurrent());
370}
371
372NPObject* WebBindings::makeStringArray(const WebVector<WebString>& data)
373{
374    return makeStringArrayImpl(data, v8::Isolate::GetCurrent());
375}
376
377void WebBindings::pushExceptionHandler(ExceptionHandler handler, void* data)
378{
379    WebCore::pushExceptionHandler(handler, data);
380}
381
382void WebBindings::popExceptionHandler()
383{
384    WebCore::popExceptionHandler();
385}
386
387void WebBindings::toNPVariant(v8::Local<v8::Value> object, NPObject* root, NPVariant* result)
388{
389    WebCore::convertV8ObjectToNPVariant(object, root, result, v8::Isolate::GetCurrent());
390}
391
392v8::Handle<v8::Value> WebBindings::toV8Value(const NPVariant* variant)
393{
394    v8::Isolate* isolate = v8::Isolate::GetCurrent();
395    if (variant->type == NPVariantType_Object) {
396        NPObject* object = NPVARIANT_TO_OBJECT(*variant);
397        V8NPObject* v8Object = npObjectToV8NPObject(object);
398        if (!v8Object)
399            return v8::Undefined(isolate);
400        return convertNPVariantToV8Object(variant, v8Object->rootObject->frame()->script().windowScriptNPObject(), isolate);
401    }
402    // Safe to pass 0 since we have checked the script object class to make sure the
403    // argument is a primitive v8 type.
404    return convertNPVariantToV8Object(variant, 0, isolate);
405}
406
407} // namespace blink
408