webbasenetscapepluginview.mm

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    [notificationCenter removeObserver:self name:LoginWindowDidSwitchToUserNotification     object:nil];
}

- (void)start
{
    ASSERT([self currentWindow]);
    
    if (_isStarted)
        return;
    
    ASSERT([self webView]);
    
    if (![[[self webView] preferences] arePlugInsEnabled])
        return;
   
    Frame* frame = core([self webFrame]);
    if (!frame)
        return;
    Page* page = frame->page();
    if (!page)
        return;
    
    bool wasDeferring = page->defersLoading();
    if (!wasDeferring)
        page->setDefersLoading(true);

    BOOL result = [self createPlugin];
    
    if (!wasDeferring)
        page->setDefersLoading(false);

    if (!result)
        return;
    
    _isStarted = YES;
    [[self webView] addPluginInstanceView:self];
    
    [self updateAndSetWindow];
    
    if ([self window]) {
        [self addWindowObservers];
        if ([[self window] isKeyWindow]) {
            [self sendActivateEvent:YES];
        }
        [self restartTimers];
    }
    
    [self resetTrackingRect];
    
    [self loadStream];
}

- (void)stop
{
    if (![self shouldStop])
        return;
    
    [self removeTrackingRect];
    
    if (!_isStarted)
        return;
    
    _isStarted = NO;
    
    [[self webView] removePluginInstanceView:self];
    
    // Stop the timers
    [self stopTimers];
    
    // Stop notifications and callbacks.
    [self removeWindowObservers];
    
    [self destroyPlugin];
}

- (void)viewWillMoveToWindow:(NSWindow *)newWindow
{
    // We must remove the tracking rect before we move to the new window.
    // Once we move to the new window, it will be too late.
    [self removeTrackingRect];
    [self removeWindowObservers];
    
    // Workaround for: <rdar://problem/3822871> resignFirstResponder is not sent to first responder view when it is removed from the window
    [self setHasFocus:NO];
    
    if (!newWindow) {
        if ([[self webView] hostWindow]) {
            // View will be moved out of the actual window but it still has a host window.
            [self stopTimers];
        } else {
            // View will have no associated windows.
            [self stop];
            
            // Stop observing WebPreferencesChangedNotification -- we only need to observe this when installed in the view hierarchy.
            // When not in the view hierarchy, -viewWillMoveToWindow: and -viewDidMoveToWindow will start/stop the plugin as needed.
            [[NSNotificationCenter defaultCenter] removeObserver:self name:WebPreferencesChangedNotification object:nil];
        }
    }
}

- (void)viewWillMoveToSuperview:(NSView *)newSuperview
{
    if (!newSuperview) {
        // Stop the plug-in when it is removed from its superview.  It is not sufficient to do this in -viewWillMoveToWindow:nil, because
        // the WebView might still has a hostWindow at that point, which prevents the plug-in from being destroyed.
        // There is no need to start the plug-in when moving into a superview.  -viewDidMoveToWindow takes care of that.
        [self stop];
        
        // Stop observing WebPreferencesChangedNotification -- we only need to observe this when installed in the view hierarchy.
        // When not in the view hierarchy, -viewWillMoveToWindow: and -viewDidMoveToWindow will start/stop the plugin as needed.
        [[NSNotificationCenter defaultCenter] removeObserver:self name:WebPreferencesChangedNotification object:nil];
    }
}

- (void)viewDidMoveToWindow
{
    [self resetTrackingRect];
    
    if ([self window]) {
        // While in the view hierarchy, observe WebPreferencesChangedNotification so that we can start/stop depending
        // on whether plugins are enabled.
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(preferencesHaveChanged:)
                                                     name:WebPreferencesChangedNotification
                                                   object:nil];
        
        // View moved to an actual window. Start it if not already started.
        [self start];
        [self restartTimers];
        [self addWindowObservers];
    } else if ([[self webView] hostWindow]) {
        // View moved out of an actual window, but still has a host window.
        // Call setWindow to explicitly "clip out" the plug-in from sight.
        // FIXME: It would be nice to do this where we call stopNullEvents in viewWillMoveToWindow.
        [self updateAndSetWindow];
    }
}

- (void)viewWillMoveToHostWindow:(NSWindow *)hostWindow
{
    if (!hostWindow && ![self window]) {
        // View will have no associated windows.
        [self stop];
        
        // Remove WebPreferencesChangedNotification observer -- we will observe once again when we move back into the window
        [[NSNotificationCenter defaultCenter] removeObserver:self name:WebPreferencesChangedNotification object:nil];
    }
}

- (void)viewDidMoveToHostWindow
{
    if ([[self webView] hostWindow]) {
        // View now has an associated window. Start it if not already started.
        [self start];
    }
}

#pragma mark NOTIFICATIONS

- (void)windowWillClose:(NSNotification *)notification 
{
    [self stop]; 
} 

- (void)windowBecameKey:(NSNotification *)notification
{
    [self sendActivateEvent:YES];
    [self setNeedsDisplay:YES];
    [self restartTimers];
}

- (void)windowResignedKey:(NSNotification *)notification
{
    [self sendActivateEvent:NO];
    [self setNeedsDisplay:YES];
    [self restartTimers];
}

- (void)windowDidMiniaturize:(NSNotification *)notification
{
    [self stopTimers];
}

- (void)windowDidDeminiaturize:(NSNotification *)notification
{
    [self restartTimers];
}

- (void)loginWindowDidSwitchFromUser:(NSNotification *)notification
{
    [self stopTimers];
}

-(void)loginWindowDidSwitchToUser:(NSNotification *)notification
{
    [self restartTimers];
}

- (void)preferencesHaveChanged:(NSNotification *)notification
{
    WebPreferences *preferences = [[self webView] preferences];
    BOOL arePlugInsEnabled = [preferences arePlugInsEnabled];
    
    if ([notification object] == preferences && _isStarted != arePlugInsEnabled) {
        if (arePlugInsEnabled) {
            if ([self currentWindow]) {
                [self start];
            }
        } else {
            [self stop];
            [self setNeedsDisplay:YES];
        }
    }
}

- (void)renewGState
{
    [super renewGState];
    
    // -renewGState is called whenever the view's geometry changes.  It's a little hacky to override this method, but
    // much safer than walking up the view hierarchy and observing frame/bounds changed notifications, since you don't
    // have to track subsequent changes to the view hierarchy and add/remove notification observers.
    // NSOpenGLView uses the exact same technique to reshape its OpenGL surface.
    
    // All of the work this method does may safely be skipped if the view is not in a window.  When the view
    // is moved back into a window, everything should be set up correctly.
    if (![self window])
        return;
    
    [self updateAndSetWindow];
    
    [self resetTrackingRect];
    
    // Check to see if the plugin view is completely obscured (scrolled out of view, for example).
    // For performance reasons, we send null events at a lower rate to plugins which are obscured.
    BOOL oldIsObscured = _isCompletelyObscured;
    _isCompletelyObscured = NSIsEmptyRect([self visibleRect]);
    if (_isCompletelyObscured != oldIsObscured)
        [self restartTimers];
}

- (BOOL)becomeFirstResponder
{
    [self setHasFocus:YES];
    return YES;
}

- (BOOL)resignFirstResponder
{
    [self setHasFocus:NO];    
    return YES;
}

- (WebDataSource *)dataSource
{
    WebFrame *webFrame = kit(_element->document()->frame());
    return [webFrame _dataSource];
}

- (WebFrame *)webFrame
{
    return [[self dataSource] webFrame];
}

- (WebView *)webView
{
    return [[self webFrame] webView];
}

- (NSWindow *)currentWindow
{
    return [self window] ? [self window] : [[self webView] hostWindow];
}

- (WebCore::HTMLPlugInElement*)element
{
    return _element.get();
}

// We want to treat these as regular keyboard events.

- (void)cut:(id)sender
{
    [self keyDown:[NSApp currentEvent]];
}

- (void)copy:(id)sender
{
    [self keyDown:[NSApp currentEvent]];
}

- (void)paste:(id)sender
{
    [self keyDown:[NSApp currentEvent]];
}

- (void)selectAll:(id)sender
{
    [self keyDown:[NSApp currentEvent]];
}

// AppKit doesn't call mouseDown or mouseUp on right-click. Simulate control-click
// mouseDown and mouseUp so plug-ins get the right-click event as they do in Carbon (3125743).
- (void)rightMouseDown:(NSEvent *)theEvent
{
    [self mouseDown:theEvent];
}

- (void)rightMouseUp:(NSEvent *)theEvent
{
    [self mouseUp:theEvent];
}

@end

#endif //  ENABLE(NETSCAPE_PLUGIN_API)