Take out the activex control.

webkit/activex_shim/dispatch_object.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "webkit/activex_shim/dispatch_object.h"
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include "base/logging.h"
-#include "webkit/activex_shim/activex_util.h"
-#include "webkit/activex_shim/npp_impl.h"
-
-using std::string;
-using std::wstring;
-
-namespace activex_shim {
-
-// Used when the browser asks for scriptable object.
-static NPClass npclass = {
-  1, // NP_CLASS_STRUCT_VERSION,
-  NPAllocate,
-  NPDeallocate,
-  NPInvalidate,
-  NPHasMethod,
-  NPInvoke,
-  NPInvokeDefault,
-  NPHasProperty,
-  NPGetProperty,
-  NPSetProperty,
-  NPRemoveProperty
-};
-
-DispatchObject::DispatchObject(DispatchObject* root)
-    : npobject_(NULL),
-      root_(root),
-      deleting_spawned_children_(false) {
-}
-
-DispatchObject::~DispatchObject() {
-  if (npobject_) {
-    // We are gone, but the NPObject may still be there. So remove
-    // the reference to myself to avoid future trouble.
-    npobject_->dispatch_object = NULL;
-  }
-}
-
-NPObject* DispatchObject::GetScriptableNPObject() {
-  if (npobject_ == NULL) {
-    npobject_ = static_cast<DispatchNPObject*>(NPAllocate(&npclass));
-  } else {
-    // If it is requesting the object again, we should just return the
-    // object with increased reference count.
-    g_browser->retainobject(npobject_);
-  }
-  return npobject_;
-}
-
-NPObject* DispatchObject::NPAllocate(NPClass* cls) {
-  DispatchNPObject* obj = new DispatchNPObject();
-  obj->_class = cls;
-  obj->referenceCount = 1;
-  obj->dispatch_object = this;
-  return obj;
-}
-
-void DispatchObject::NPInvalidate() {
-}
-
-void DispatchObject::OnDeallocateObject(DispatchNPObject* obj) {
-  DCHECK_EQ(obj, npobject_);
-  if (obj == npobject_) {
-    // Just null our reference so that we won't accidentally access it
-    // during destruction.
-    npobject_ = NULL;
-    if (NPObjectOwnsMe()) {
-      delete this;
-    }
-  }
-}
-
-bool DispatchObject::NPHasMethod(NPIdentifier name) {
-  wstring wname;
-  if (!NPIdentifierToWString(name, &wname))
-    return false;
-  return DispIsMethodOrProperty(GetDispatch(), wname.c_str(), true);
-}
-
-bool DispatchObject::NPHasProperty(NPIdentifier name) {
-  wstring wname;
-  if (!NPIdentifierToWString(name, &wname))
-    return false;
-  return DispIsMethodOrProperty(GetDispatch(), wname.c_str(), false);
-  // Here is another way. But the problem is it can not distiguish between
-  // method and property.
-  // DISPID dispid;
-  // if (GetDispID(npobj->dispatch_object->GetDispatch(), wname.c_str(), &dispid))
-  //   return true;
-}
-
-bool DispatchObject::NPInvoke(NPIdentifier name, const NPVariant* args,
-                             uint32_t argCount, NPVariant* result) {
-  wstring wname;
-  if (!NPIdentifierToWString(name, &wname))
-    return false;
-  std::vector<ScopedVariant> vars;
-  ScopedVariant vtres;
-  bool res = false;
-  do {
-    if (argCount > 0) {
-      vars.resize(argCount);
-      unsigned int i;
-      for (i = 0; i < argCount; i++) {
-        // Note that we need to reverse the order of arguments for
-        // IDispatch::Invoke.
-        if (!NPVariantToVariant(&args[argCount - i - 1], &vars[i]))
-          break;
-      }
-      if (i < argCount)
-        break;
-    }
-    if (!DispInvoke(GetDispatch(), wname.c_str(),
-                    argCount > 0 ? &vars[0] : NULL,
-                    argCount, &vtres))
-      break;
-    if (!VariantToNPVariant(this, &vtres, result))
-      break;
-    res = true;
-  } while (false);
-  return res;
-}
-
-bool DispatchObject::NPInvokeDefault(const NPVariant* args, uint32_t argCount,
-                                    NPVariant* result) {
-  return false;
-}
-
-bool DispatchObject::NPGetProperty(NPIdentifier name, NPVariant* variant) {
-  wstring wname;
-  if (!NPIdentifierToWString(name, &wname))
-    return false;
-  ScopedVariant result;
-  if (!DispInvoke(GetDispatch(), wname.c_str(), NULL, 0, &result))
-    return false;
-  if (!VariantToNPVariant(this, &result, variant))
-    return false;
-  return true;
-}
-
-bool DispatchObject::NPSetProperty(NPIdentifier name, const NPVariant* variant) {
-  wstring wname;
-  if (!NPIdentifierToWString(name, &wname))
-    return false;
-  ScopedVariant rvalue;
-  if (!NPVariantToVariant(variant, &rvalue))
-    return false;
-  if (!DispSetProperty(GetDispatch(), wname.c_str(), rvalue))
-    return false;
-  return true;
-}
-
-bool DispatchObject::NPRemoveProperty(NPIdentifier propertyName) {
-  return false;
-}
-
-void DispatchObject::AddSpawned(DispatchObject* obj) {
-  // I myself must be the root.
-  DCHECK(root_ == NULL);
-  spawned_children_.push_back(obj);
-}
-
-void DispatchObject::RemoveSpawned(DispatchObject* obj) {
-  // This is to avoid problem when the root object is calling ReleaseSpawned to
-  // delete all spawned children.
-  if (deleting_spawned_children_)
-    return;
-  DCHECK(root_ == NULL);
-  SpawnedChildrenList::iterator it = std::find(spawned_children_.begin(),
-                                               spawned_children_.end(), obj);
-  if (it == spawned_children_.end()) {
-    DCHECK(false);
-    return;
-  }
-  spawned_children_.erase(it);
-}
-
-void DispatchObject::ReleaseSpawned() {
-  DCHECK(root_ == NULL);
-  deleting_spawned_children_ = true;
-  for (SpawnedChildrenList::iterator it = spawned_children_.begin();
-       it != spawned_children_.end(); ++it)
-    delete *it;
-  deleting_spawned_children_ = false;
-  spawned_children_.clear();
-}
-
-SpawnedDispatchObject::SpawnedDispatchObject(IDispatch* dispatch,
-                                             DispatchObject* root)
-    : DispatchObject(root),
-      dispatch_(dispatch) {
-  if (dispatch)
-    dispatch->AddRef();
-  DCHECK(root != NULL);
-  root->AddSpawned(this);
-}
-
-SpawnedDispatchObject::~SpawnedDispatchObject() {
-  if (dispatch_)
-    dispatch_->Release();
-  DCHECK(root_ != NULL);
-  root_->RemoveSpawned(this);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Scripting object functions implementation.
-
-NPObject* NPAllocate(NPP npp, NPClass* theClass) {
-  DispatchObject* dispatch_object = static_cast<DispatchObject*>(npp->pdata);
-  return dispatch_object->NPAllocate(theClass);
-}
-
-void NPDeallocate(NPObject* obj) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  // The dispatch_object could be well gone before the NPObject is released.
-  if (npobj->dispatch_object != NULL) {
-    npobj->dispatch_object->OnDeallocateObject(npobj);
-  }
-  delete npobj;
-}
-
-void NPInvalidate(NPObject* obj) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return;
-  npobj->dispatch_object->NPInvalidate();
-}
-
-bool NPHasMethod(NPObject* obj, NPIdentifier name) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPHasMethod(name);
-}
-
-bool NPInvoke(NPObject* obj, NPIdentifier name, const NPVariant* args,
-              uint32_t argCount, NPVariant* result) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPInvoke(name, args, argCount, result);
-}
-
-bool NPInvokeDefault(NPObject* obj, const NPVariant* args, uint32_t argCount,
-                     NPVariant* result) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPInvokeDefault(args, argCount, result);
-}
-
-bool NPHasProperty(NPObject* obj, NPIdentifier name) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPHasProperty(name);
-}
-
-bool NPGetProperty(NPObject* obj, NPIdentifier name, NPVariant* variant) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPGetProperty(name, variant);
-}
-
-bool NPSetProperty(NPObject* obj, NPIdentifier name, const NPVariant* variant) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPSetProperty(name, variant);
-}
-
-bool NPRemoveProperty(NPObject* obj, NPIdentifier name) {
-  DispatchNPObject* npobj = static_cast<DispatchNPObject*>(obj);
-  if (npobj->dispatch_object == NULL)
-    return false;
-  return npobj->dispatch_object->NPRemoveProperty(name);
-}
-
-}  // namespace activex_shim