summaryrefslogtreecommitdiff
path: root/widget/cocoa/nsMenuGroupOwnerX.mm
blob: 661a52bd80cd5fae5d9c364f7f158dbe92647f46 (plain)
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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsMenuGroupOwnerX.h"
#include "nsMenuBarX.h"
#include "nsMenuX.h"
#include "nsMenuItemX.h"
#include "nsMenuUtilsX.h"
#include "nsCocoaUtils.h"
#include "nsCocoaWindow.h"

#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsObjCExceptions.h"
#include "nsThreadUtils.h"

#include "mozilla/dom/Element.h"
#include "nsIWidget.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"

#include "nsINode.h"

using namespace mozilla;

NS_IMPL_ISUPPORTS(nsMenuGroupOwnerX, nsIMutationObserver)


nsMenuGroupOwnerX::nsMenuGroupOwnerX()
: mCurrentCommandID(eCommand_ID_Last)
{
  mInfoSet = [[NSMutableSet setWithCapacity:10] retain];
}


nsMenuGroupOwnerX::~nsMenuGroupOwnerX()
{
  MOZ_ASSERT(mContentToObserverTable.Count() == 0, "have outstanding mutation observers!\n");

  // The MenuItemInfo objects in mInfoSet may live longer than we do.  So when
  // we get destroyed we need to invalidate all their mMenuGroupOwner pointers.
  NSEnumerator* counter = [mInfoSet objectEnumerator];
  MenuItemInfo* info;
  while ((info = (MenuItemInfo*) [counter nextObject])) {
    [info setMenuGroupOwner:nil];
  }
  [mInfoSet release];
}


nsresult nsMenuGroupOwnerX::Create(nsIContent* aContent)
{
  if (!aContent)
    return NS_ERROR_INVALID_ARG;

  mContent = aContent;

  return NS_OK;
}


//
// nsIMutationObserver
//


void nsMenuGroupOwnerX::CharacterDataWillChange(nsIDocument* aDocument,
                                                nsIContent* aContent,
                                                CharacterDataChangeInfo* aInfo)
{
}


void nsMenuGroupOwnerX::CharacterDataChanged(nsIDocument* aDocument,
                                             nsIContent* aContent,
                                             CharacterDataChangeInfo* aInfo)
{
}


void nsMenuGroupOwnerX::ContentAppended(nsIDocument* aDocument,
                                        nsIContent* aContainer,
                                        nsIContent* aFirstNewContent,
                                        int32_t /* unused */)
{
  for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
    ContentInserted(aDocument, aContainer, cur, 0);
  }
}


void nsMenuGroupOwnerX::NodeWillBeDestroyed(const nsINode * aNode)
{
}


void nsMenuGroupOwnerX::AttributeWillChange(nsIDocument* aDocument,
                                            dom::Element* aContent,
                                            int32_t aNameSpaceID,
                                            nsIAtom* aAttribute,
                                            int32_t aModType,
                                            const nsAttrValue* aNewValue)
{
}

void nsMenuGroupOwnerX::NativeAnonymousChildListChange(nsIDocument* aDocument,
                                                       nsIContent* aContent,
                                                       bool aIsRemove)
{
}

void nsMenuGroupOwnerX::AttributeChanged(nsIDocument* aDocument,
                                         dom::Element* aElement,
                                         int32_t aNameSpaceID,
                                         nsIAtom* aAttribute,
                                         int32_t aModType,
                                         const nsAttrValue* aOldValue)
{
  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
  nsChangeObserver* obs = LookupContentChangeObserver(aElement);
  if (obs)
    obs->ObserveAttributeChanged(aDocument, aElement, aAttribute);
}


void nsMenuGroupOwnerX::ContentRemoved(nsIDocument * aDocument,
                                       nsIContent * aContainer,
                                       nsIContent * aChild,
                                       int32_t aIndexInContainer,
                                       nsIContent * aPreviousSibling)
{
  if (!aContainer) {
    return;
  }

  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
  nsChangeObserver* obs = LookupContentChangeObserver(aContainer);
  if (obs)
    obs->ObserveContentRemoved(aDocument, aChild, aIndexInContainer);
  else if (aContainer != mContent) {
    // We do a lookup on the parent container in case things were removed
    // under a "menupopup" item. That is basically a wrapper for the contents
    // of a "menu" node.
    nsCOMPtr<nsIContent> parent = aContainer->GetParent();
    if (parent) {
      obs = LookupContentChangeObserver(parent);
      if (obs)
        obs->ObserveContentRemoved(aDocument, aChild, aIndexInContainer);
    }
  }
}


void nsMenuGroupOwnerX::ContentInserted(nsIDocument * aDocument,
                                        nsIContent * aContainer,
                                        nsIContent * aChild,
                                        int32_t /* unused */)
{
  if (!aContainer) {
    return;
  }

  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
  nsChangeObserver* obs = LookupContentChangeObserver(aContainer);
  if (obs)
    obs->ObserveContentInserted(aDocument, aContainer, aChild);
  else if (aContainer != mContent) {
    // We do a lookup on the parent container in case things were removed
    // under a "menupopup" item. That is basically a wrapper for the contents
    // of a "menu" node.
    nsCOMPtr<nsIContent> parent = aContainer->GetParent();
    if (parent) {
      obs = LookupContentChangeObserver(parent);
      if (obs)
        obs->ObserveContentInserted(aDocument, aContainer, aChild);
    }
  }
}


void nsMenuGroupOwnerX::ParentChainChanged(nsIContent *aContent)
{
}


// For change management, we don't use a |nsSupportsHashtable| because
// we know that the lifetime of all these items is bounded by the
// lifetime of the menubar. No need to add any more strong refs to the
// picture because the containment hierarchy already uses strong refs.
void nsMenuGroupOwnerX::RegisterForContentChanges(nsIContent *aContent,
                                                  nsChangeObserver *aMenuObject)
{
  if (!mContentToObserverTable.Contains(aContent)) {
    aContent->AddMutationObserver(this);
  }
  mContentToObserverTable.Put(aContent, aMenuObject);
}


void nsMenuGroupOwnerX::UnregisterForContentChanges(nsIContent *aContent)
{
  if (mContentToObserverTable.Contains(aContent)) {
    aContent->RemoveMutationObserver(this);
  }
  mContentToObserverTable.Remove(aContent);
}


nsChangeObserver* nsMenuGroupOwnerX::LookupContentChangeObserver(nsIContent* aContent)
{
  nsChangeObserver * result;
  if (mContentToObserverTable.Get(aContent, &result))
    return result;
  else
    return nullptr;
}


// Given a menu item, creates a unique 4-character command ID and
// maps it to the item. Returns the id for use by the client.
uint32_t nsMenuGroupOwnerX::RegisterForCommand(nsMenuItemX* inMenuItem)
{
  // no real need to check for uniqueness. We always start afresh with each
  // window at 1. Even if we did get close to the reserved Apple command id's,
  // those don't start until at least '    ', which is integer 538976288. If
  // we have that many menu items in one window, I think we have other
  // problems.

  // make id unique
  ++mCurrentCommandID;

  mCommandToMenuObjectTable.Put(mCurrentCommandID, inMenuItem);

  return mCurrentCommandID;
}


// Removes the mapping between the given 4-character command ID
// and its associated menu item.
void nsMenuGroupOwnerX::UnregisterCommand(uint32_t inCommandID)
{
  mCommandToMenuObjectTable.Remove(inCommandID);
}


nsMenuItemX* nsMenuGroupOwnerX::GetMenuItemForCommandID(uint32_t inCommandID)
{
  nsMenuItemX * result;
  if (mCommandToMenuObjectTable.Get(inCommandID, &result))
    return result;
  else
    return nullptr;
}

void nsMenuGroupOwnerX::AddMenuItemInfoToSet(MenuItemInfo* info)
{
  [mInfoSet addObject:info];
}