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//
// SUUpdateAlert.m
// Sparkle
//
// Created by Andy Matuschak on 3/12/06.
// Copyright 2006 Andy Matuschak. All rights reserved.
//

// -----------------------------------------------------------------------------
// Headers:
// -----------------------------------------------------------------------------

#import "SUUpdateAlert.h"

#import "SUHost.h"
#import <WebKit/WebKit.h>

#import "SUConstants.h"


@interface WebView (SUTenFiveProperty)

-(void) setDrawsBackground: (BOOL)state;

@end


@implementation SUUpdateAlert

- (id)initWithAppcastItem:(SUAppcastItem *)item host:(SUHost *)aHost
{
self = [super initWithHost:host windowNibName:@"SUUpdateAlert"];
if (self)
{
host = [aHost retain];
updateItem = [item retain];
[self setShouldCascadeWindows:NO];

// Alex: This dummy line makes sure that the binary is linked against WebKit.
// The SUUpdateAlert.xib file contains a WebView and if we don't link against WebKit,
// we will get a runtime crash when decoding the NIB. It is better to get a link error.
[WebView MIMETypesShownAsHTML];
}
return self;
}

- (NSString *)description { return [NSString stringWithFormat:@"%@ <%@>", [self class], [host bundlePath]]; }

- (void)dealloc
{
[updateItem release];
[host release];
[super dealloc];
}

- (void)setVersionDisplayer: (id<SUVersionDisplay>)disp
{
versionDisplayer = disp;
}

- (void)endWithSelection:(SUUpdateAlertChoice)choice
{
[releaseNotesView stopLoading:self];
[releaseNotesView setFrameLoadDelegate:nil];
[releaseNotesView setPolicyDelegate:nil];
[releaseNotesView removeFromSuperview]; // Otherwise it gets sent Esc presses (why?!) and gets very confused.
[self close];
if ([delegate respondsToSelector:@selector(updateAlert:finishedWithChoice:)])
[delegate updateAlert:self finishedWithChoice:choice];
}

- (IBAction)installUpdate: (id)sender
{
[self endWithSelection:SUInstallUpdateChoice];
}

- (IBAction)openInfoURL: (id)sender
{
[self endWithSelection:SUOpenInfoURLChoice];
}

- (IBAction)skipThisVersion: (id)sender
{
[self endWithSelection:SUSkipThisVersionChoice];
}

- (IBAction)remindMeLater: (id)sender
{
[self endWithSelection:SURemindMeLaterChoice];
}

- (void)displayReleaseNotes
{
// Set the default font
[releaseNotesView setPreferencesIdentifier:[SPARKLE_BUNDLE bundleIdentifier]];
[[releaseNotesView preferences] setStandardFontFamily:[[NSFont systemFontOfSize:8] familyName]];
[[releaseNotesView preferences] setDefaultFontSize:(int)[NSFont systemFontSizeForControlSize:NSSmallControlSize]];
[releaseNotesView setFrameLoadDelegate:self];
[releaseNotesView setPolicyDelegate:self];

// Stick a nice big spinner in the middle of the web view until the page is loaded.
NSRect frame = [[releaseNotesView superview] frame];
releaseNotesSpinner = [[[NSProgressIndicator alloc] initWithFrame:NSMakeRect(NSMidX(frame)-16, NSMidY(frame)-16, 32, 32)] autorelease];
[releaseNotesSpinner setStyle:NSProgressIndicatorSpinningStyle];
[releaseNotesSpinner startAnimation:self];
webViewFinishedLoading = NO;
[[releaseNotesView superview] addSubview:releaseNotesSpinner];

// If there's a release notes URL, load it; otherwise, just stick the contents of the description into the web view.
if ([updateItem releaseNotesURL])
{
if ([[updateItem releaseNotesURL] isFileURL])
{
[[releaseNotesView mainFrame] loadHTMLString:@"Release notes with file:// URLs are not supported for security reasons&mdash;Javascript would be able to read files on your file system." baseURL:nil];
}
else
{
[[releaseNotesView mainFrame] loadRequest:[NSURLRequest requestWithURL:[updateItem releaseNotesURL] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30]];
}
}
else
{
[[releaseNotesView mainFrame] loadHTMLString:[updateItem itemDescription] baseURL:nil];
}
}

- (BOOL)showsReleaseNotes
{
NSNumber *shouldShowReleaseNotes = [host objectForInfoDictionaryKey:SUShowReleaseNotesKey];
if (shouldShowReleaseNotes == nil)
{
// UK 2007-09-18: Don't show release notes if RSS item contains no description and no release notes URL:
return( ([updateItem itemDescription] != nil
&& [[[updateItem itemDescription] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]] length] > 0)
|| [updateItem releaseNotesURL] != nil );
}
else
return [shouldShowReleaseNotes boolValue];
}

- (BOOL)allowsAutomaticUpdates
{
BOOL allowAutoUpdates = YES; // Defaults to YES.
if( [host objectForInfoDictionaryKey:SUAllowsAutomaticUpdatesKey] )
allowAutoUpdates = [host boolForInfoDictionaryKey: SUAllowsAutomaticUpdatesKey];

// UK 2007-08-31: Give delegate a chance to modify this choice:
if( delegate && [delegate respondsToSelector: @selector(updateAlert:shouldAllowAutoUpdate:)] )
[delegate updateAlert: self shouldAllowAutoUpdate: &allowAutoUpdates];

return allowAutoUpdates;
}

- (void)awakeFromNib
{
NSString* sizeStr = [host objectForInfoDictionaryKey:SUFixedHTMLDisplaySizeKey];

if( [host isBackgroundApplication] )
[[self window] setLevel:NSFloatingWindowLevel]; // This means the window will float over all other apps, if our app is switched out ?! UK 2007-09-04
[[self window] setFrameAutosaveName: sizeStr ? @"" : @"SUUpdateAlertFrame"];

// We're gonna do some frame magic to match the window's size to the description field and the presence of the release notes view.
NSRect frame = [[self window] frame];
BOOL showReleaseNotes = [self showsReleaseNotes]; // UK 2007-09-18
if (!showReleaseNotes) // UK 2007-09-18
{
// Resize the window to be appropriate for not having a huge release notes view.
frame.size.height -= [releaseNotesView frame].size.height + 40; // Extra 40 is for the release notes label and margin.

// Hiding the resize handles is not enough on 10.5, you can still click
// where they would be, so we set the min/max sizes to be equal to
// inhibit resizing completely:
[[self window] setShowsResizeIndicator: NO];
[[self window] setMinSize: frame.size];
[[self window] setMaxSize: frame.size];
}

if (![self allowsAutomaticUpdates])
{
NSRect boxFrame = [[[releaseNotesView superview] superview] frame];
boxFrame.origin.y -= 20;
boxFrame.size.height += 20;
[[[releaseNotesView superview] superview] setFrame:boxFrame];
}

if( [updateItem fileURL] == nil ) // UK 2007-08-31 (whole if clause)
{
[installButton setTitle: SULocalizedString( @"Learn More...", @"Alternate title for 'Install Update' button when there's no download in RSS feed." )];
[installButton setAction: @selector(openInfoURL:)];
}

// Make sure button widths are OK:
#define DISTANCE_BETWEEN_BUTTONS 3
#define DISTANCE_BETWEEN_BUTTON_GROUPS 12

CGFloat minimumWindowWidth = [[self window] frame].size.width -NSMaxX([installButton frame]) +NSMinX([skipButton frame]); // Distance between contents and left/right edge.
NSDictionary* attrs = [NSDictionary dictionaryWithObjectsAndKeys: [installButton font], NSFontAttributeName, nil];
NSSize titleSize = [[installButton title] sizeWithAttributes: attrs];
titleSize.width += (16 + 8) * 2; // 16 px for the end caps plus 8 px padding at each end or it'll look as ugly as calling -sizeToFit.
NSRect installBtnBox = [installButton frame];
installBtnBox.origin.x += installBtnBox.size.width -titleSize.width;
installBtnBox.size.width = titleSize.width;
[installButton setFrame: installBtnBox];
minimumWindowWidth += titleSize.width;

titleSize = [[laterButton title] sizeWithAttributes: attrs];
titleSize.width += (16 + 8) * 2; // 16 px for the end caps plus 8 px padding at each end or it'll look as ugly as calling -sizeToFit.
NSRect laterBtnBox = [installButton frame];
laterBtnBox.origin.x = installBtnBox.origin.x -DISTANCE_BETWEEN_BUTTONS -titleSize.width;
laterBtnBox.size.width = titleSize.width;
[laterButton setFrame: laterBtnBox];
minimumWindowWidth += DISTANCE_BETWEEN_BUTTONS +titleSize.width;

titleSize = [[skipButton title] sizeWithAttributes: attrs];
titleSize.width += (16 + 8) * 2; // 16 px for the end caps plus 8 px padding at each end or it'll look as ugly as calling -sizeToFit.
NSRect skipBtnBox = [skipButton frame];
skipBtnBox.size.width = titleSize.width;
[skipButton setFrame: skipBtnBox];
minimumWindowWidth += DISTANCE_BETWEEN_BUTTON_GROUPS +titleSize.width;

if( showReleaseNotes ) // UK 2007-09-18 (whole block)
{
if( sizeStr )
{
NSSize desiredSize = NSSizeFromString( sizeStr );
NSSize sizeDiff = NSZeroSize;
// NSBox* boxView = (NSBox*)[[releaseNotesView superview] superview];

//[boxView setBorderType: NSNoBorder];
[releaseNotesView setDrawsBackground: NO];

sizeDiff.width = desiredSize.width -[releaseNotesView frame].size.width;
sizeDiff.height = desiredSize.height -[releaseNotesView frame].size.height;
frame.size.width += sizeDiff.width;
frame.size.height += sizeDiff.height;

// No resizing:
[[self window] setShowsResizeIndicator:NO];
[[self window] setMinSize:frame.size];
[[self window] setMaxSize:frame.size];
}
}

if( frame.size.width < minimumWindowWidth )
frame.size.width = minimumWindowWidth;

[[self window] setFrame: frame display: NO];
[[self window] center];

if (showReleaseNotes) // UK 2007-09-18
{
[self displayReleaseNotes];
}

[[[releaseNotesView superview] superview] setHidden: !showReleaseNotes]; // UK 2007-09-18

}

-(BOOL)showsReleaseNotesText
{
return( [host objectForInfoDictionaryKey:SUFixedHTMLDisplaySizeKey] == nil );
}


- (BOOL)windowShouldClose:note
{
[self endWithSelection:SURemindMeLaterChoice];
return YES;
}

- (NSImage *)applicationIcon
{
return [host icon];
}

- (NSString *)titleText
{
return [NSString stringWithFormat:SULocalizedString(@"A new version of %@ is available!", nil), [host name]];
}

- (NSString *)descriptionText
{
NSString *updateItemVersion = [updateItem displayVersionString];
    NSString *hostVersion = [host displayVersion];
// Display more info if the version strings are the same; useful for betas.
    if( !versionDisplayer && [updateItemVersion isEqualToString:hostVersion] )
{
        updateItemVersion = [updateItemVersion stringByAppendingFormat:@" (%@)", [updateItem versionString]];
        hostVersion = [hostVersion stringByAppendingFormat:@" (%@)", [host version]];
    }
else
[versionDisplayer formatVersion: &updateItemVersion andVersion: &hostVersion];
    return [NSString stringWithFormat:SULocalizedString(@"%@ %@ is now available--you have %@. Would you like to download it now?", nil), [host name], updateItemVersion, hostVersion];
}

- (void)webView:(WebView *)sender didFinishLoadForFrame:frame
{
    if ([frame parentFrame] == nil) {
        webViewFinishedLoading = YES;
[releaseNotesSpinner setHidden:YES];
[sender display]; // necessary to prevent weird scroll bar artifacting
    }
}

- (void)webView:sender decidePolicyForNavigationAction:(NSDictionary *)actionInformation request:(NSURLRequest *)request frame:frame decisionListener:listener
{
    if (webViewFinishedLoading) {
        [[NSWorkspace sharedWorkspace] openURL:[request URL]];

        [listener ignore];
    }
    else {
        [listener use];
    }
}

// Clean up the contextual menu.
- (NSArray *)webView:(WebView *)sender contextMenuItemsForElement:(NSDictionary *)element defaultMenuItems:(NSArray *)defaultMenuItems
{
NSMutableArray *webViewMenuItems = [[defaultMenuItems mutableCopy] autorelease];

if (webViewMenuItems)
{
NSEnumerator *itemEnumerator = [defaultMenuItems objectEnumerator];
NSMenuItem *menuItem = nil;
while ((menuItem = [itemEnumerator nextObject]))
{
NSInteger tag = [menuItem tag];

switch (tag)
{
case WebMenuItemTagOpenLinkInNewWindow:
case WebMenuItemTagDownloadLinkToDisk:
case WebMenuItemTagOpenImageInNewWindow:
case WebMenuItemTagDownloadImageToDisk:
case WebMenuItemTagOpenFrameInNewWindow:
case WebMenuItemTagGoBack:
case WebMenuItemTagGoForward:
case WebMenuItemTagStop:
case WebMenuItemTagReload:
[webViewMenuItems removeObjectIdenticalTo: menuItem];
}
}
}

return webViewMenuItems;
}

- (void)setDelegate:del
{
delegate = del;
}

@end
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