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/*****************************************************************************
* MultiClickRemoteBehavior.m
* RemoteControlWrapper
*
* Created by Martin Kahr on 11.03.06 under a MIT-style license.
* Copyright (c) 2006 martinkahr.com. All rights reserved.
*
* Code modified and adapted to OpenOffice.org
* by Eric Bachard on 11.08.2008 under the same License
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*****************************************************************************/
#import "MultiClickRemoteBehavior.h"
const NSTimeInterval DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE = 0.35;
const NSTimeInterval HOLD_RECOGNITION_TIME_INTERVAL = 0.4;
@implementation MultiClickRemoteBehavior
- (id) init {
if ( (self = [super init]) ) {
maxClickTimeDifference = DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE;
}
return self;
}
// Delegates are not retained!
// http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_4.html
// Delegating objects do not (and should not) retain their delegates.
// However, clients of delegating objects (applications, usually) are responsible for ensuring that their delegates are around
// to receive delegation messages. To do this, they may have to retain the delegate.
- (void) setDelegate: (id) _delegate {
if ( _delegate && ( [_delegate respondsToSelector:@selector(remoteButton:pressedDown:clickCount:)] == NO )) return; // return what ?
delegate = _delegate;
}
- (id) delegate {
return delegate;
}
- (BOOL) simulateHoldEvent {
return simulateHoldEvents;
}
- (void) setSimulateHoldEvent: (BOOL) value {
simulateHoldEvents = value;
}
- (BOOL) simulatesHoldForButtonIdentifier: (RemoteControlEventIdentifier) identifier remoteControl: (RemoteControl*) remoteControl {
// we do that check only for the normal button identifiers as we would check for hold support for hold events instead
if (identifier > (1 << EVENT_TO_HOLD_EVENT_OFFSET)) return NO;
return [self simulateHoldEvent] && [remoteControl sendsEventForButtonIdentifier: (identifier << EVENT_TO_HOLD_EVENT_OFFSET)]==NO;
}
- (BOOL) clickCountingEnabled {
return clickCountEnabledButtons != 0;
}
- (void) setClickCountingEnabled: (BOOL) value {
if (value) {
[self setClickCountEnabledButtons: kRemoteButtonPlus | kRemoteButtonMinus | kRemoteButtonPlay | kRemoteButtonLeft | kRemoteButtonRight | kRemoteButtonMenu];
} else {
[self setClickCountEnabledButtons: 0];
}
}
- (unsigned int) clickCountEnabledButtons {
return clickCountEnabledButtons;
}
- (void) setClickCountEnabledButtons: (unsigned int)value {
clickCountEnabledButtons = value;
}
- (NSTimeInterval) maximumClickCountTimeDifference {
return maxClickTimeDifference;
}
- (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff {
maxClickTimeDifference = timeDiff;
}
- (void) sendSimulatedHoldEvent: (id) time {
BOOL startSimulateHold = NO;
RemoteControlEventIdentifier event = lastHoldEvent;
@synchronized(self) {
startSimulateHold = (lastHoldEvent>0 && lastHoldEventTime == [time doubleValue]);
}
if (startSimulateHold) {
lastEventSimulatedHold = YES;
event = (event << EVENT_TO_HOLD_EVENT_OFFSET);
[delegate remoteButton:event pressedDown: YES clickCount: 1];
}
}
- (void) executeClickCountEvent: (NSArray*) values {
RemoteControlEventIdentifier event = [[values objectAtIndex: 0] unsignedIntValue];
NSTimeInterval eventTimePoint = [[values objectAtIndex: 1] doubleValue];
BOOL finishedClicking = NO;
int finalClickCount = eventClickCount;
@synchronized(self) {
finishedClicking = (event != lastClickCountEvent || eventTimePoint == lastClickCountEventTime);
if (finishedClicking) {
eventClickCount = 0;
lastClickCountEvent = 0;
lastClickCountEventTime = 0;
}
}
if (finishedClicking) {
[delegate remoteButton:event pressedDown: YES clickCount:finalClickCount];
// trigger a button release event, too
[NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow:0.1]];
[delegate remoteButton:event pressedDown: NO clickCount:finalClickCount];
}
}
- (void) sendRemoteButtonEvent: (RemoteControlEventIdentifier) event pressedDown: (BOOL) pressedDown remoteControl: (RemoteControl*) remoteControl {
if (!delegate) return;
BOOL clickCountingForEvent = ([self clickCountEnabledButtons] & event) == event;
if ([self simulatesHoldForButtonIdentifier: event remoteControl: remoteControl] && lastClickCountEvent==0) {
if (pressedDown) {
// wait to see if it is a hold
lastHoldEvent = event;
lastHoldEventTime = [NSDate timeIntervalSinceReferenceDate];
[self performSelector:@selector(sendSimulatedHoldEvent:)
withObject:[NSNumber numberWithDouble:lastHoldEventTime]
afterDelay:HOLD_RECOGNITION_TIME_INTERVAL];
return;
} else {
if (lastEventSimulatedHold) {
// it was a hold
// send an event for "hold release"
event = (event << EVENT_TO_HOLD_EVENT_OFFSET);
lastHoldEvent = 0;
lastEventSimulatedHold = NO;
[delegate remoteButton:event pressedDown: pressedDown clickCount:1];
return;
} else {
RemoteControlEventIdentifier previousEvent = lastHoldEvent;
@synchronized(self) {
lastHoldEvent = 0;
}
// in case click counting is enabled we have to setup the state for that, too
if (clickCountingForEvent) {
lastClickCountEvent = previousEvent;
lastClickCountEventTime = lastHoldEventTime;
NSNumber* eventNumber;
NSNumber* timeNumber;
eventClickCount = 1;
timeNumber = [NSNumber numberWithDouble:lastClickCountEventTime];
eventNumber= [NSNumber numberWithUnsignedInt:previousEvent];
NSTimeInterval diffTime = maxClickTimeDifference-([NSDate timeIntervalSinceReferenceDate]-lastHoldEventTime);
[self performSelector: @selector(executeClickCountEvent:)
withObject: [NSArray arrayWithObjects:eventNumber, timeNumber, nil]
afterDelay: diffTime];
// we do not return here because we are still in the press-release event
// that will be consumed below
} else {
// trigger the pressed down event that we consumed first
[delegate remoteButton:event pressedDown: YES clickCount:1];
}
}
}
}
if (clickCountingForEvent) {
if (pressedDown == NO) return;
NSNumber* eventNumber;
NSNumber* timeNumber;
@synchronized(self) {
lastClickCountEventTime = [NSDate timeIntervalSinceReferenceDate];
if (lastClickCountEvent == event) {
eventClickCount = eventClickCount + 1;
} else {
eventClickCount = 1;
}
lastClickCountEvent = event;
timeNumber = [NSNumber numberWithDouble:lastClickCountEventTime];
eventNumber= [NSNumber numberWithUnsignedInt:event];
}
[self performSelector: @selector(executeClickCountEvent:)
withObject: [NSArray arrayWithObjects:eventNumber, timeNumber, nil]
afterDelay: maxClickTimeDifference];
} else {
[delegate remoteButton:event pressedDown: pressedDown clickCount:1];
}
}
@end
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