tSignal.cpp

Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#include "platform/platform.h"
25#include "core/util/tSignal.h"
26
27
28void SignalBase::DelegateLink::insert(DelegateLink* node, F32 order)
29{
30   // Note: can only legitimately be called on list head
31   DelegateLink * walk = next;
32   while (order >= walk->mOrder && walk->next != this)
33      walk = walk->next;
34   if (order >= walk->mOrder)
35   {
36      // insert after walk
37      node->prev = walk;
38      node->next = walk->next;
39      walk->next->prev = node;
40      walk->next = node;
41   }
42   else
43   {
44      // insert before walk
45      node->prev = walk->prev;
46      node->next = walk;
47      walk->prev->next = node;
48      walk->prev = node;
49   }
50   node->mOrder = order;
51}
52
53void SignalBase::DelegateLink::unlink()
54{
55   // Unlink this node
56   next->prev = prev;
57   prev->next = next;
58}
59
60SignalBase::~SignalBase()
61{
62   removeAll();
63}
64
65void SignalBase::removeAll()
66{
67   while (mList.next != &mList)
68   {
69      DelegateLink* ptr = mList.next;
70      ptr->unlink();
71      delete ptr;
72   }
73}
74