webbasenetscapepluginview.mm

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2005, 2006, 2007, 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.
 */

#if ENABLE(NETSCAPE_PLUGIN_API)

#import "WebBaseNetscapePluginView.h"

#import "WebFrameInternal.h"
#import "WebKitLogging.h"
#import "WebKitNSStringExtras.h"
#import "WebKitSystemInterface.h"
#import "WebNSURLExtras.h"
#import "WebNSURLRequestExtras.h"
#import "WebView.h"
#import "WebViewInternal.h"

#import <WebCore/WebCoreObjCExtras.h>
#import <WebCore/Document.h>
#import <WebCore/Element.h>
#import <WebCore/Frame.h>
#import <WebCore/FrameLoader.h>
#import <WebCore/HTMLPlugInElement.h>
#import <WebCore/Page.h>
#import <WebCore/RenderView.h>
#import <WebKit/DOMPrivate.h>
#import <runtime/InitializeThreading.h>
#import <wtf/Assertions.h>

#define LoginWindowDidSwitchFromUserNotification    @"WebLoginWindowDidSwitchFromUserNotification"
#define LoginWindowDidSwitchToUserNotification      @"WebLoginWindowDidSwitchToUserNotification"

using namespace WebCore;

@implementation WebBaseNetscapePluginView

+ (void)initialize
{
    JSC::initializeThreading();
#ifndef BUILDING_ON_TIGER
    WebCoreObjCFinalizeOnMainThread(self);
#endif
    WKSendUserChangeNotifications();
}

- (id)initWithFrame:(NSRect)frame
      pluginPackage:(WebNetscapePluginPackage *)pluginPackage
                URL:(NSURL *)URL
            baseURL:(NSURL *)baseURL
           MIMEType:(NSString *)MIME
      attributeKeys:(NSArray *)keys
    attributeValues:(NSArray *)values
       loadManually:(BOOL)loadManually
            element:(PassRefPtr<WebCore::HTMLPlugInElement>)element
{
    self = [super initWithFrame:frame];
    if (!self)
        return nil;
    
    _pluginPackage = pluginPackage;
    _element = element;
    _sourceURL.adoptNS([URL copy]);
    _baseURL.adoptNS([baseURL copy]);
    _MIMEType.adoptNS([MIME copy]);
    
    [self setAttributeKeys:keys andValues:values];
    if (loadManually)
        _mode = NP_FULL;
    else
        _mode = NP_EMBED;
    
    _loadManually = loadManually;
    
    return self;
}

- (void)dealloc
{
    ASSERT(!_isStarted);

    [super dealloc];
}

- (void)finalize
{
    ASSERT_MAIN_THREAD();
    ASSERT(!_isStarted);

    [super finalize];
}

- (WebNetscapePluginPackage *)pluginPackage
{
    return _pluginPackage.get();
}
    
- (BOOL)isFlipped
{
    return YES;
}

- (NSMutableURLRequest *)requestWithURLCString:(const char *)URLCString
{
    if (!URLCString)
        return nil;
    
    CFStringRef string = CFStringCreateWithCString(kCFAllocatorDefault, URLCString, kCFStringEncodingISOLatin1);
    ASSERT(string); // All strings should be representable in ISO Latin 1
    
    NSString *URLString = [(NSString *)string _web_stringByStrippingReturnCharacters];
    NSURL *URL = [NSURL _web_URLWithDataAsString:URLString relativeToURL:_baseURL.get()];
    CFRelease(string);
    if (!URL)
        return nil;
    
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
    Frame* frame = core([self webFrame]);
    if (!frame)
        return nil;
    [request _web_setHTTPReferrer:frame->loader()->outgoingReferrer()];
    return request;
}

// Methods that subclasses must override
- (void)setAttributeKeys:(NSArray *)keys andValues:(NSArray *)values
{
    ASSERT_NOT_REACHED();
}

- (void)handleMouseMoved:(NSEvent *)event
{
    ASSERT_NOT_REACHED();
}

- (void)focusChanged
{
    ASSERT_NOT_REACHED();
}

- (void)windowFocusChanged:(BOOL)hasFocus
{
    ASSERT_NOT_REACHED();
}

- (BOOL)createPlugin
{
    ASSERT_NOT_REACHED();
    return NO;
}

- (void)loadStream
{
    ASSERT_NOT_REACHED();
}

- (BOOL)shouldStop
{
    ASSERT_NOT_REACHED();
    return YES;
}

- (void)destroyPlugin
{
    ASSERT_NOT_REACHED();
}

- (void)updateAndSetWindow
{
    ASSERT_NOT_REACHED();
}

- (void)removeTrackingRect
{
    if (_trackingTag) {
        [self removeTrackingRect:_trackingTag];
        _trackingTag = 0;
        
        // Do the following after setting trackingTag to 0 so we don't re-enter.
        
        // Balance the retain in resetTrackingRect. Use autorelease in case we hold 
        // the last reference to the window during tear-down, to avoid crashing AppKit. 
        [[self window] autorelease];
    }
}

- (void)resetTrackingRect
{
    [self removeTrackingRect];
    if (_isStarted) {
        // Retain the window so that removeTrackingRect can work after the window is closed.
        [[self window] retain];
        _trackingTag = [self addTrackingRect:[self bounds] owner:self userData:nil assumeInside:NO];
    }
}

- (void)stopTimers
{
    _shouldFireTimers = NO;
}

- (void)startTimers
{
    _shouldFireTimers = YES;
}

- (void)restartTimers
{
    ASSERT([self window]);
    
    [self stopTimers];
    
    if (!_isStarted || [[self window] isMiniaturized])
        return;
    
    [self startTimers];
}

- (NSRect)_windowClipRect
{
    RenderObject* renderer = _element->renderer();
    
    if (renderer && renderer->view()) {
        if (FrameView* frameView = renderer->view()->frameView())
            return frameView->windowClipRectForLayer(renderer->enclosingLayer(), true);
    }
    
    return NSZeroRect;
}

- (NSRect)visibleRect
{
    // WebCore may impose an additional clip (via CSS overflow or clip properties).  Fetch
    // that clip now.    
    return NSIntersectionRect([self convertRect:[self _windowClipRect] fromView:nil], [super visibleRect]);
}

- (BOOL)acceptsFirstResponder
{
    return YES;
}

- (void)sendActivateEvent:(BOOL)activate
{
    if (!_isStarted)
        return;
    
    [self windowFocusChanged:activate];
}

- (void)setHasFocus:(BOOL)flag
{
    if (!_isStarted)
        return;
    
    if (_hasFocus == flag)
        return;
    
    _hasFocus = flag;
    
    [self focusChanged];
}

- (void)addWindowObservers
{
    ASSERT([self window]);
    
    NSWindow *theWindow = [self window];
    
    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
    [notificationCenter addObserver:self selector:@selector(windowWillClose:) 
                               name:NSWindowWillCloseNotification object:theWindow]; 
    [notificationCenter addObserver:self selector:@selector(windowBecameKey:)
                               name:NSWindowDidBecomeKeyNotification object:theWindow];
    [notificationCenter addObserver:self selector:@selector(windowResignedKey:)
                               name:NSWindowDidResignKeyNotification object:theWindow];
    [notificationCenter addObserver:self selector:@selector(windowDidMiniaturize:)
                               name:NSWindowDidMiniaturizeNotification object:theWindow];
    [notificationCenter addObserver:self selector:@selector(windowDidDeminiaturize:)
                               name:NSWindowDidDeminiaturizeNotification object:theWindow];
    
    [notificationCenter addObserver:self selector:@selector(loginWindowDidSwitchFromUser:)
                               name:LoginWindowDidSwitchFromUserNotification object:nil];
    [notificationCenter addObserver:self selector:@selector(loginWindowDidSwitchToUser:)
                               name:LoginWindowDidSwitchToUserNotification object:nil];
}

- (void)removeWindowObservers
{
    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
    [notificationCenter removeObserver:self name:NSWindowWillCloseNotification        object:nil]; 
    [notificationCenter removeObserver:self name:NSWindowDidBecomeKeyNotification     object:nil];
    [notificationCenter removeObserver:self name:NSWindowDidResignKeyNotification     object:nil];
    [notificationCenter removeObserver:self name:NSWindowDidMiniaturizeNotification   object:nil];
    [notificationCenter removeObserver:self name:NSWindowDidDeminiaturizeNotification object:nil];
    [notificationCenter removeObserver:self name:LoginWindowDidSwitchFromUserNotification   object:nil];