gecko/dom/base/nsPluginArray.cpp

417 lines
10 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsPluginArray.h"
#include "nsMimeTypeArray.h"
#include "nsGlobalWindow.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDOMNavigator.h"
#include "nsIDOMMimeType.h"
#include "nsIPluginHost.h"
#include "nsIDocShell.h"
#include "nsIWebNavigation.h"
#include "nsDOMClassInfo.h"
#include "nsPluginError.h"
#include "nsContentUtils.h"
nsPluginArray::nsPluginArray(nsNavigator* navigator,
nsIDocShell *aDocShell)
{
nsresult rv;
mNavigator = navigator; // don't ADDREF here, needed for parent of script object.
mPluginHost = do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &rv);
mPluginCount = 0;
mPluginArray = nsnull;
mDocShell = aDocShell;
}
nsPluginArray::~nsPluginArray()
{
if (mPluginArray != nsnull) {
for (PRUint32 i = 0; i < mPluginCount; i++) {
NS_IF_RELEASE(mPluginArray[i]);
}
delete[] mPluginArray;
}
}
// QueryInterface implementation for nsPluginArray
NS_INTERFACE_MAP_BEGIN(nsPluginArray)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMPluginArray)
NS_INTERFACE_MAP_ENTRY(nsIDOMPluginArray)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(PluginArray)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsPluginArray)
NS_IMPL_RELEASE(nsPluginArray)
NS_IMETHODIMP
nsPluginArray::GetLength(PRUint32* aLength)
{
if (AllowPlugins() && mPluginHost)
return mPluginHost->GetPluginCount(aLength);
*aLength = 0;
return NS_OK;
}
PRBool
nsPluginArray::AllowPlugins()
{
PRBool allowPlugins = PR_FALSE;
if (mDocShell)
if (NS_FAILED(mDocShell->GetAllowPlugins(&allowPlugins)))
allowPlugins = PR_FALSE;
return allowPlugins;
}
nsIDOMPlugin*
nsPluginArray::GetItemAt(PRUint32 aIndex, nsresult* aResult)
{
*aResult = NS_OK;
if (!AllowPlugins())
return nsnull;
if (mPluginArray == nsnull) {
*aResult = GetPlugins();
if (*aResult != NS_OK)
return nsnull;
}
return aIndex < mPluginCount ? mPluginArray[aIndex] : nsnull;
}
NS_IMETHODIMP
nsPluginArray::Item(PRUint32 aIndex, nsIDOMPlugin** aReturn)
{
nsresult rv;
NS_IF_ADDREF(*aReturn = GetItemAt(aIndex, &rv));
return rv;
}
nsIDOMPlugin*
nsPluginArray::GetNamedItem(const nsAString& aName, nsresult* aResult)
{
*aResult = NS_OK;
if (!AllowPlugins())
return nsnull;
if (mPluginArray == nsnull) {
*aResult = GetPlugins();
if (*aResult != NS_OK)
return nsnull;
}
for (PRUint32 i = 0; i < mPluginCount; i++) {
nsAutoString pluginName;
nsIDOMPlugin* plugin = mPluginArray[i];
if (plugin->GetName(pluginName) == NS_OK && pluginName.Equals(aName)) {
return plugin;
}
}
return nsnull;
}
NS_IMETHODIMP
nsPluginArray::NamedItem(const nsAString& aName, nsIDOMPlugin** aReturn)
{
NS_PRECONDITION(nsnull != aReturn, "null arg");
nsresult rv;
NS_IF_ADDREF(*aReturn = GetNamedItem(aName, &rv));
return rv;
}
nsresult
nsPluginArray::GetPluginHost(nsIPluginHost** aPluginHost)
{
NS_ENSURE_ARG_POINTER(aPluginHost);
nsresult rv = NS_OK;
if (!mPluginHost) {
mPluginHost = do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
return rv;
}
}
*aPluginHost = mPluginHost;
NS_IF_ADDREF(*aPluginHost);
return rv;
}
void
nsPluginArray::SetDocShell(nsIDocShell* aDocShell)
{
mDocShell = aDocShell;
}
NS_IMETHODIMP
nsPluginArray::Refresh(PRBool aReloadDocuments)
{
nsresult res = NS_OK;
if (!AllowPlugins())
return NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA;
if (!mPluginHost) {
mPluginHost = do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &res);
}
if(NS_FAILED(res)) {
return res;
}
// NS_ERROR_PLUGINS_PLUGINSNOTCHANGED on reloading plugins indicates
// that plugins did not change and was not reloaded
PRBool pluginsNotChanged = PR_FALSE;
if(mPluginHost)
pluginsNotChanged = (NS_ERROR_PLUGINS_PLUGINSNOTCHANGED == mPluginHost->ReloadPlugins(aReloadDocuments));
// no need to reload the page if plugins have not been changed
// in fact, if we do reload we can hit recursive load problem, see bug 93351
if(pluginsNotChanged)
return res;
nsCOMPtr<nsIWebNavigation> webNav = do_QueryInterface(mDocShell);
if (mPluginArray != nsnull) {
for (PRUint32 i = 0; i < mPluginCount; i++)
NS_IF_RELEASE(mPluginArray[i]);
delete[] mPluginArray;
}
mPluginCount = 0;
mPluginArray = nsnull;
if (mNavigator)
mNavigator->RefreshMIMEArray();
if (aReloadDocuments && webNav)
webNav->Reload(nsIWebNavigation::LOAD_FLAGS_NONE);
return res;
}
nsresult
nsPluginArray::GetPlugins()
{
nsresult rv = GetLength(&mPluginCount);
if (NS_SUCCEEDED(rv)) {
mPluginArray = new nsIDOMPlugin*[mPluginCount];
if (!mPluginArray)
return NS_ERROR_OUT_OF_MEMORY;
if (!mPluginCount)
return NS_OK;
rv = mPluginHost->GetPlugins(mPluginCount, mPluginArray);
if (NS_SUCCEEDED(rv)) {
// need to wrap each of these with a nsPluginElement, which
// is scriptable.
for (PRUint32 i = 0; i < mPluginCount; i++) {
nsIDOMPlugin* wrapper = new nsPluginElement(mPluginArray[i]);
NS_IF_ADDREF(wrapper);
mPluginArray[i] = wrapper;
}
} else {
/* XXX this code is all broken. If GetPlugins fails, there's no contract
* explaining what should happen. Instead of deleting elements in an
* array of random pointers, we mark the array as 0 length.
*/
mPluginCount = 0;
}
}
return rv;
}
//
nsPluginElement::nsPluginElement(nsIDOMPlugin* plugin)
{
mPlugin = plugin; // don't AddRef, see nsPluginArray::Item.
mMimeTypeCount = 0;
mMimeTypeArray = nsnull;
}
nsPluginElement::~nsPluginElement()
{
NS_IF_RELEASE(mPlugin);
if (mMimeTypeArray != nsnull) {
for (PRUint32 i = 0; i < mMimeTypeCount; i++)
NS_IF_RELEASE(mMimeTypeArray[i]);
delete[] mMimeTypeArray;
}
}
// QueryInterface implementation for nsPluginElement
NS_INTERFACE_MAP_BEGIN(nsPluginElement)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIDOMPlugin)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Plugin)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsPluginElement)
NS_IMPL_RELEASE(nsPluginElement)
NS_IMETHODIMP
nsPluginElement::GetDescription(nsAString& aDescription)
{
return mPlugin->GetDescription(aDescription);
}
NS_IMETHODIMP
nsPluginElement::GetFilename(nsAString& aFilename)
{
return mPlugin->GetFilename(aFilename);
}
NS_IMETHODIMP
nsPluginElement::GetVersion(nsAString& aVersion)
{
return mPlugin->GetVersion(aVersion);
}
NS_IMETHODIMP
nsPluginElement::GetName(nsAString& aName)
{
return mPlugin->GetName(aName);
}
NS_IMETHODIMP
nsPluginElement::GetLength(PRUint32* aLength)
{
return mPlugin->GetLength(aLength);
}
nsIDOMMimeType*
nsPluginElement::GetItemAt(PRUint32 aIndex, nsresult *aResult)
{
if (mMimeTypeArray == nsnull) {
*aResult = GetMimeTypes();
if (*aResult != NS_OK)
return nsnull;
}
if (aIndex >= mMimeTypeCount) {
*aResult = NS_ERROR_FAILURE;
return nsnull;
}
*aResult = NS_OK;
return mMimeTypeArray[aIndex];
}
NS_IMETHODIMP
nsPluginElement::Item(PRUint32 aIndex, nsIDOMMimeType** aReturn)
{
nsresult rv;
NS_IF_ADDREF(*aReturn = GetItemAt(aIndex, &rv));
return rv;
}
nsIDOMMimeType*
nsPluginElement::GetNamedItem(const nsAString& aName, nsresult *aResult)
{
if (mMimeTypeArray == nsnull) {
*aResult = GetMimeTypes();
if (*aResult != NS_OK)
return nsnull;
}
*aResult = NS_OK;
for (PRUint32 i = 0; i < mMimeTypeCount; i++) {
nsAutoString type;
nsIDOMMimeType* mimeType = mMimeTypeArray[i];
if (mimeType->GetType(type) == NS_OK && type.Equals(aName)) {
return mimeType;
}
}
return nsnull;
}
NS_IMETHODIMP
nsPluginElement::NamedItem(const nsAString& aName, nsIDOMMimeType** aReturn)
{
nsresult rv;
NS_IF_ADDREF(*aReturn = GetNamedItem(aName, &rv));
return rv;
}
nsresult
nsPluginElement::GetMimeTypes()
{
nsresult rv = mPlugin->GetLength(&mMimeTypeCount);
if (rv == NS_OK) {
mMimeTypeArray = new nsIDOMMimeType*[mMimeTypeCount];
if (mMimeTypeArray == nsnull)
return NS_ERROR_OUT_OF_MEMORY;
for (PRUint32 i = 0; i < mMimeTypeCount; i++) {
nsCOMPtr<nsIDOMMimeType> mimeType;
rv = mPlugin->Item(i, getter_AddRefs(mimeType));
if (rv != NS_OK)
break;
mimeType = new nsMimeType(this, mimeType);
NS_IF_ADDREF(mMimeTypeArray[i] = mimeType);
}
}
return rv;
}