/*

 * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import "WebDefaultPolicyDelegate.h"

#import "WebDataSource.h"

#import "WebFrame.h"

#import "WebPolicyDelegatePrivate.h"

#import "WebViewInternal.h"

#import <Foundation/NSURLConnection.h>

#import <Foundation/NSURLRequest.h>

#import <Foundation/NSURLResponse.h>

#import <wtf/Assertions.h>

@implementation WebDefaultPolicyDelegate

static WebDefaultPolicyDelegate *sharedDelegate = nil;

// Return a object with vanilla implementations of the protocol's methods

// Note this feature relies on our default delegate being stateless

+ (WebDefaultPolicyDelegate *)sharedPolicyDelegate

{

    if (!sharedDelegate) {

        sharedDelegate = [[WebDefaultPolicyDelegate alloc] init];

    }

    return sharedDelegate;

}

- (void)webView: (WebView *)wv unableToImplementPolicyWithError:(NSError *)error frame:(WebFrame *)frame

{

    LOG_ERROR("called unableToImplementPolicyWithError:%@ inFrame:%@", error, frame);

}

- (void)webView: (WebView *)wv decidePolicyForMIMEType:(NSString *)type

                                               request:(NSURLRequest *)request

                                                 frame:(WebFrame *)frame

                                      decisionListener:(id <WebPolicyDecisionListener>)listener

{

    if ([[request URL] isFileURL]) {

        BOOL isDirectory = NO;

        BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:[[request URL] path] isDirectory:&isDirectory];

        if (exists && !isDirectory && [wv _canShowMIMEType:type])

            [listener use];

        else

            [listener ignore];

    } else if ([wv _canShowMIMEType:type])

        [listener use];

    else

        [listener ignore];

}

- (void)webView: (WebView *)wv decidePolicyForNavigationAction:(NSDictionary *)actionInformation 

                                                       request:(NSURLRequest *)request

                                                         frame:(WebFrame *)frame

                                              decisionListener:(id <WebPolicyDecisionListener>)listener

{

    WebNavigationType navType = [[actionInformation objectForKey:WebActionNavigationTypeKey] intValue];

    if ([WebView _canHandleRequest:request forMainFrame:frame == [wv mainFrame]]) {

        [listener use];

    } else if (navType == WebNavigationTypePlugInRequest) {

        [listener use];

    } else {

        // A file URL shouldn't fall through to here, but if it did,

        // it would be a security risk to open it.

        if (![[request URL] isFileURL]) {

            [[NSWorkspace sharedWorkspace] openURL:[request URL]];

        }

        [listener ignore];

    }

}

- (void)webView: (WebView *)wv decidePolicyForNewWindowAction:(NSDictionary *)actionInformation 

                                                      request:(NSURLRequest *)request

                                                 newFrameName:(NSString *)frameName

                                             decisionListener:(id <WebPolicyDecisionListener>)listener

{

    [listener use];

}

// Temporary SPI needed for <rdar://problem/3951283> can view pages from the back/forward cache that should be disallowed by Parental Controls

- (BOOL)webView:(WebView *)webView shouldGoToHistoryItem:(WebHistoryItem *)item

{

    return YES;

}

@end