File: AccCollector.cpp

package info (click to toggle)
icedove 1%3A45.8.0-3~deb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 1,488,584 kB
  • ctags: 1,068,813
  • sloc: cpp: 4,801,496; ansic: 1,929,291; python: 379,296; java: 252,018; xml: 173,182; asm: 146,741; sh: 89,229; makefile: 23,462; perl: 16,380; objc: 4,088; yacc: 1,841; lex: 1,222; exp: 499; php: 437; lisp: 228; awk: 152; pascal: 116; sed: 51; ruby: 47; csh: 31; ada: 16
file content (119 lines) | stat: -rw-r--r-- 2,899 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "AccCollector.h"

#include "Accessible.h"

using namespace mozilla::a11y;

////////////////////////////////////////////////////////////////////////////////
// nsAccCollector
////////////////////////////////////////////////////////////////////////////////

AccCollector::
  AccCollector(Accessible* aRoot, filters::FilterFuncPtr aFilterFunc) :
  mFilterFunc(aFilterFunc), mRoot(aRoot), mRootChildIdx(0)
{
}

AccCollector::~AccCollector()
{
}

uint32_t
AccCollector::Count()
{
  EnsureNGetIndex(nullptr);
  return mObjects.Length();
}

Accessible*
AccCollector::GetAccessibleAt(uint32_t aIndex)
{
  Accessible* accessible = mObjects.SafeElementAt(aIndex, nullptr);
  if (accessible)
    return accessible;

  return EnsureNGetObject(aIndex);
}

int32_t
AccCollector::GetIndexAt(Accessible* aAccessible)
{
  int32_t index = mObjects.IndexOf(aAccessible);
  if (index != -1)
    return index;

  return EnsureNGetIndex(aAccessible);
}

////////////////////////////////////////////////////////////////////////////////
// nsAccCollector protected

Accessible*
AccCollector::EnsureNGetObject(uint32_t aIndex)
{
  uint32_t childCount = mRoot->ChildCount();
  while (mRootChildIdx < childCount) {
    Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
    if (!(mFilterFunc(child) & filters::eMatch))
      continue;

    AppendObject(child);
    if (mObjects.Length() - 1 == aIndex)
      return mObjects[aIndex];
  }

  return nullptr;
}

int32_t
AccCollector::EnsureNGetIndex(Accessible* aAccessible)
{
  uint32_t childCount = mRoot->ChildCount();
  while (mRootChildIdx < childCount) {
    Accessible* child = mRoot->GetChildAt(mRootChildIdx++);
    if (!(mFilterFunc(child) & filters::eMatch))
      continue;

    AppendObject(child);
    if (child == aAccessible)
      return mObjects.Length() - 1;
  }

  return -1;
}

void
AccCollector::AppendObject(Accessible* aAccessible)
{
  mObjects.AppendElement(aAccessible);
}

////////////////////////////////////////////////////////////////////////////////
// EmbeddedObjCollector
////////////////////////////////////////////////////////////////////////////////

int32_t
EmbeddedObjCollector::GetIndexAt(Accessible* aAccessible)
{
  if (aAccessible->mParent != mRoot)
    return -1;

  MOZ_ASSERT(!aAccessible->IsProxy());
  if (aAccessible->mInt.mIndexOfEmbeddedChild != -1)
    return aAccessible->mInt.mIndexOfEmbeddedChild;

  return mFilterFunc(aAccessible) & filters::eMatch ?
    EnsureNGetIndex(aAccessible) : -1;
}

void
EmbeddedObjCollector::AppendObject(Accessible* aAccessible)
{
  MOZ_ASSERT(!aAccessible->IsProxy());
  aAccessible->mInt.mIndexOfEmbeddedChild = mObjects.Length();
  mObjects.AppendElement(aAccessible);
}