зеркало из https://github.com/mozilla/pjs.git
205 строки
5.8 KiB
C++
205 строки
5.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsIPresState.h"
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#include "nsHashtable.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsXPIDLString.h"
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#include "nsReadableUtils.h"
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#include "nsLayoutErrors.h"
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class nsPresState: public nsIPresState
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{
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NS_DECL_ISUPPORTS
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NS_IMETHOD GetStatePropertyAsSupports(const nsAString& aName, nsISupports** aResult);
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NS_IMETHOD SetStatePropertyAsSupports(const nsAString& aName, nsISupports* aValue);
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NS_IMETHOD GetStateProperty(const nsAString& aProperty, nsAString& aResult);
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NS_IMETHOD SetStateProperty(const nsAString& aProperty, const nsAString& aValue);
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NS_IMETHOD RemoveStateProperty(const nsAString& aProperty);
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public:
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nsPresState();
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virtual ~nsPresState();
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// Static members
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// Internal member functions
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protected:
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// MEMBER VARIABLES
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protected:
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// A string table that holds property/value pairs.
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nsSupportsHashtable* mPropertyTable;
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};
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// Static initialization
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// Implementation /////////////////////////////////////////////////////////////////
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// Implement our nsISupports methods
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NS_IMPL_ISUPPORTS1(nsPresState, nsIPresState)
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// Constructors/Destructors
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nsPresState::nsPresState(void)
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:mPropertyTable(nsnull)
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{
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}
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nsPresState::~nsPresState(void)
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{
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delete mPropertyTable;
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}
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// nsIPresState Interface ////////////////////////////////////////////////////////////////
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NS_IMETHODIMP
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nsPresState::GetStateProperty(const nsAString& aName,
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nsAString& aResult)
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{
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nsresult rv = NS_STATE_PROPERTY_NOT_THERE;
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aResult.Truncate();
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// Retrieve from hashtable.
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if (mPropertyTable) {
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const nsPromiseFlatString& flatString = PromiseFlatString(aName);
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nsStringKey key(flatString);
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nsCOMPtr<nsISupportsCString> supportsStr =
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dont_AddRef(NS_STATIC_CAST(nsISupportsCString*,
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mPropertyTable->Get(&key)));
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if (supportsStr) {
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nsCAutoString data;
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supportsStr->GetData(data);
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CopyUTF8toUTF16(data, aResult);
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rv = NS_STATE_PROPERTY_EXISTS;
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}
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}
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return rv;
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}
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NS_IMETHODIMP
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nsPresState::SetStateProperty(const nsAString& aName, const nsAString& aValue)
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{
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if (!mPropertyTable) {
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mPropertyTable = new nsSupportsHashtable(8);
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NS_ENSURE_TRUE(mPropertyTable, NS_ERROR_OUT_OF_MEMORY);
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}
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// Add to hashtable
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const nsPromiseFlatString& flatString = PromiseFlatString(aName);
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nsStringKey key(flatString);
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nsCOMPtr<nsISupportsCString> supportsStr(do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID));
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NS_ENSURE_TRUE(supportsStr, NS_ERROR_OUT_OF_MEMORY);
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supportsStr->SetData(NS_ConvertUCS2toUTF8(aValue));
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mPropertyTable->Put(&key, supportsStr);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::RemoveStateProperty(const nsAString& aName)
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{
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if (!mPropertyTable)
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return NS_OK;
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const nsPromiseFlatString& flatString = PromiseFlatString(aName);
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nsStringKey key(flatString);
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mPropertyTable->Remove(&key);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::GetStatePropertyAsSupports(const nsAString& aName, nsISupports** aResult)
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{
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// Retrieve from hashtable.
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nsCOMPtr<nsISupports> supp;
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if (mPropertyTable) {
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const nsPromiseFlatString& flatString = PromiseFlatString(aName);
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nsStringKey key(flatString);
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supp = dont_AddRef(NS_STATIC_CAST(nsISupports*, mPropertyTable->Get(&key)));
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}
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*aResult = supp;
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NS_IF_ADDREF(*aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsPresState::SetStatePropertyAsSupports(const nsAString& aName, nsISupports* aValue)
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{
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if (!mPropertyTable) {
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mPropertyTable = new nsSupportsHashtable(8);
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NS_ENSURE_TRUE(mPropertyTable, NS_ERROR_OUT_OF_MEMORY);
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}
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// Add to hashtable
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const nsPromiseFlatString& flatString = PromiseFlatString(aName);
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nsStringKey key(flatString);
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mPropertyTable->Put(&key, aValue);
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return NS_OK;
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}
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// Creation Routine ///////////////////////////////////////////////////////////////////////
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nsresult
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NS_NewPresState(nsIPresState** aResult)
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{
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*aResult = new nsPresState;
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if (!*aResult)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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