Subversion Repositories TruePreview

/*

 * Copyright (c) 2009, Jim Riggs, Christian Serving, L.L.C.

 * All rights reserved.

 *

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

 * modification, are permitted provided that the following conditions are

 * met:

 *     * Redistributions of source code must retain the above copyright

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

 *     * 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.

 *     * Neither the name of Christian Serving, L.L.C. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT

 * HOLDER OR 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 "TruePreviewMessageViewer.h"

@implementation TruePreviewMessageViewer

#pragma mark Class methods

+ (NSMutableDictionary*)truePreviewTimers {

  static NSMutableDictionary* sTimers = nil;

  if (sTimers == nil) {

    sTimers = [[NSMutableDictionary alloc] initWithCapacity:1];

  }

  return sTimers;

}

#pragma mark Swizzled instance methods

- (void)truePreviewDealloc {

  [self truePreviewReset];

  [[[self class] truePreviewTimers]

    removeObjectForKey:[NSNumber numberWithUnsignedLong:(unsigned long)self]

  ];

  [self truePreviewDealloc];

}

- (void)truePreviewForwardAsAttachment:(id)inSender {

  id theMessage = [self currentDisplayedMessage];

  if ([theMessage isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    NSDictionary* theSettings = [theMessage truePreviewSettings];

    if ([[theSettings objectForKey:@"forward"] boolValue]) {

      [self truePreviewReset];

      [theMessage truePreviewMarkAsViewed];

    }

  }

  [self truePreviewForwardAsAttachment:inSender];

}

- (void)truePreviewForwardMessage:(id)inSender {

  id theMessage = [self currentDisplayedMessage];

  if ([theMessage isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    NSDictionary* theSettings = [theMessage truePreviewSettings];

    if ([[theSettings objectForKey:@"forward"] boolValue]) {

      [self truePreviewReset];

      [theMessage truePreviewMarkAsViewed];

    }

  }

  [self truePreviewForwardMessage:inSender];

}

- (void)truePreviewMarkAsRead:(id)inSender {

  [self truePreviewReset];

  [self truePreviewMarkAsRead:inSender];

}

- (void)truePreviewMarkAsUnread:(id)inSender {

  [self truePreviewReset];

  [self truePreviewMarkAsUnread:inSender];

}

- (void)truePreviewMessageNoLongerDisplayedInTextView:(NSNotification*)inNotification {

  [self truePreviewMessageNoLongerDisplayedInTextView:inNotification];

  // we receive notifications from all MessageContentControllers

  if ([inNotification object] != object_getIvar(self, class_getInstanceVariable([self class], "_contentController"))) {

    return;

  }

  [self truePreviewReset];

}

- (void)truePreviewMessageWasDisplayedInTextView:(NSNotification*)inNotification {

  [self truePreviewMessageWasDisplayedInTextView:inNotification];

  // we receive notifications from all MessageContentControllers

  if ([inNotification object] != object_getIvar(self, class_getInstanceVariable([self class], "_contentController"))) {

    return;

  }

  id theMessage = [[inNotification userInfo] objectForKey:@"MessageKey"];

  if ([theMessage isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    NSDictionary* theSettings = [theMessage truePreviewSettings];

    if (

      ([[theSettings objectForKey:@"delay"] floatValue] == TRUEPREVIEW_DELAY_IMMEDIATE)

      || (

        [[theSettings objectForKey:@"window"] boolValue]

        && [self isKindOfClass:NSClassFromString(@"SingleMessageViewer")]

      )        

    ) {

      [self truePreviewReset];

      [theMessage truePreviewMarkAsViewed];

      return;

    }

    float theDelay = [[theSettings objectForKey:@"delay"] floatValue];

    if (theDelay > TRUEPREVIEW_DELAY_IMMEDIATE) {

      [self truePreviewReset];

      [self

        truePreviewSetTimer:[NSTimer

          scheduledTimerWithTimeInterval:theDelay

          target:self

          selector:@selector(truePreviewTimerFired:)

          userInfo:nil

          repeats:NO

        ]

      ];

    }

    if (

      ![self isKindOfClass:NSClassFromString(@"SingleMessageViewer")]

      && [[theSettings objectForKey:@"scroll"] boolValue]

    ) {

      // listen for selection change (mouse down) on message content view

      [[NSNotificationCenter defaultCenter]

        addObserver:self

        selector:@selector(truePreviewMessageClickedOrScrolled:)

        name:@"WebViewDidChangeSelectionNotification"

        object:[[object_getIvar(self, class_getInstanceVariable([self class], "_contentController")) currentDisplay] contentView]

      ];

      // listen for bounds change notification on the message's clip view

      [[NSNotificationCenter defaultCenter]

        addObserver:self

        selector:@selector(truePreviewMessageClickedOrScrolled:)

        name:NSViewBoundsDidChangeNotification

        object:[[[[object_getIvar(self, class_getInstanceVariable([self class], "_contentController")) currentDisplay] contentView] enclosingScrollView] contentView]

      ];

    }    

  }

}

- (void)truePreviewReplyAllMessage:(id)inSender {

  id theMessage = [self currentDisplayedMessage];

  if ([theMessage isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    NSDictionary* theSettings = [theMessage truePreviewSettings];

    if ([[theSettings objectForKey:@"reply"] boolValue]) {

      [self truePreviewReset];

      [theMessage truePreviewMarkAsViewed];

    }

  }

  [self truePreviewReplyAllMessage:inSender];

}

- (void)truePreviewReplyMessage:(id)inSender {

  id theMessage = [self currentDisplayedMessage];

  if ([theMessage isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    NSDictionary* theSettings = [theMessage truePreviewSettings];

    if ([[theSettings objectForKey:@"reply"] boolValue]) {

      [self truePreviewReset];

      [theMessage truePreviewMarkAsViewed];

    }

  }

  [self truePreviewReplyMessage:inSender];

}

#pragma mark Accessors

- (NSTimer*)truePreviewTimer {

  return [[[self class] truePreviewTimers]

    objectForKey:[NSNumber numberWithUnsignedLong:(unsigned long)self]

  ];

}

- (void)truePreviewSetTimer:(NSTimer*)inTimer {

  [[[self class] truePreviewTimers]

    setObject:inTimer

    forKey:[NSNumber numberWithUnsignedLong:(unsigned long)self]

  ];

}

#pragma mark Instance methods

- (void)truePreviewReset {

  NSTimer* theTimer = [self truePreviewTimer];

  if ((theTimer != nil) && [theTimer isValid]) {

    [theTimer invalidate];

  }

  // stop observing when changed

  [[NSNotificationCenter defaultCenter]

    removeObserver:self

    name:@"WebViewDidChangeSelectionNotification"

    object:[[object_getIvar(self, class_getInstanceVariable([self class], "_contentController")) currentDisplay] contentView]

  ];

  [[NSNotificationCenter defaultCenter]

    removeObserver:self

    name:NSViewBoundsDidChangeNotification

    object:[[[[object_getIvar(self, class_getInstanceVariable([self class], "_contentController")) currentDisplay] contentView] enclosingScrollView] contentView]

  ];

}

- (void)truePreviewTimerFired:(NSTimer*)inTimer {

  [self truePreviewReset];

  if ([[self currentDisplayedMessage] isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    [[self currentDisplayedMessage] truePreviewMarkAsViewed];

  }

}

- (void)truePreviewMessageClickedOrScrolled:(NSNotification*)inNotification {

  // ignore the first time we get the notification; it may be an initial scroll

  // to the origin after changing messages

  static BOOL sIsFirstTime = YES;

  if ([NSViewBoundsDidChangeNotification isEqualToString:[inNotification name]] && sIsFirstTime) {

    sIsFirstTime = NO;

    return;

  }

  sIsFirstTime = YES;

  [self truePreviewReset];

  if ([[self currentDisplayedMessage] isKindOfClass:NSClassFromString(@"LibraryMessage")]) {

    [[self currentDisplayedMessage] truePreviewMarkAsViewed];

  }

}

@end