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comparison: accessible/src/xul/XULSelectControlAccessible.cpp
accessible/src/xul/XULSelectControlAccessible.cpp
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "XULSelectControlAccessible.h" | |
| 8 | |
| 9 #include "nsAccessibilityService.h" | |
| 10 #include "DocAccessible.h" | |
| 11 | |
| 12 #include "nsIDOMXULContainerElement.h" | |
| 13 #include "nsIDOMXULSelectCntrlItemEl.h" | |
| 14 #include "nsIDOMXULMultSelectCntrlEl.h" | |
| 15 #include "nsIDOMKeyEvent.h" | |
| 16 #include "nsIDOMElement.h" | |
| 17 #include "nsIDOMXULElement.h" | |
| 18 #include "nsIMutableArray.h" | |
| 19 #include "nsIServiceManager.h" | |
| 20 | |
| 21 #include "mozilla/dom/Element.h" | |
| 22 | |
| 23 using namespace mozilla; | |
| 24 using namespace mozilla::a11y; | |
| 25 | |
| 26 //////////////////////////////////////////////////////////////////////////////// | |
| 27 // XULSelectControlAccessible | |
| 28 //////////////////////////////////////////////////////////////////////////////// | |
| 29 | |
| 30 XULSelectControlAccessible:: | |
| 31 XULSelectControlAccessible(nsIContent* aContent, DocAccessible* aDoc) : | |
| 32 AccessibleWrap(aContent, aDoc) | |
| 33 { | |
| 34 mGenericTypes |= eSelect; | |
| 35 mSelectControl = do_QueryInterface(aContent); | |
| 36 } | |
| 37 | |
| 38 //////////////////////////////////////////////////////////////////////////////// | |
| 39 // XULSelectControlAccessible: Accessible | |
| 40 | |
| 41 void | |
| 42 XULSelectControlAccessible::Shutdown() | |
| 43 { | |
| 44 mSelectControl = nullptr; | |
| 45 AccessibleWrap::Shutdown(); | |
| 46 } | |
| 47 | |
| 48 //////////////////////////////////////////////////////////////////////////////// | |
| 49 // XULSelectControlAccessible: SelectAccessible | |
| 50 | |
| 51 already_AddRefed<nsIArray> | |
| 52 XULSelectControlAccessible::SelectedItems() | |
| 53 { | |
| 54 nsCOMPtr<nsIMutableArray> selectedItems = | |
| 55 do_CreateInstance(NS_ARRAY_CONTRACTID); | |
| 56 if (!selectedItems || !mDoc) | |
| 57 return nullptr; | |
| 58 | |
| 59 // For XUL multi-select control | |
| 60 nsCOMPtr<nsIDOMXULMultiSelectControlElement> xulMultiSelect = | |
| 61 do_QueryInterface(mSelectControl); | |
| 62 if (xulMultiSelect) { | |
| 63 int32_t length = 0; | |
| 64 xulMultiSelect->GetSelectedCount(&length); | |
| 65 for (int32_t index = 0; index < length; index++) { | |
| 66 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm; | |
| 67 xulMultiSelect->MultiGetSelectedItem(index, getter_AddRefs(itemElm)); | |
| 68 nsCOMPtr<nsINode> itemNode(do_QueryInterface(itemElm)); | |
| 69 Accessible* item = mDoc->GetAccessible(itemNode); | |
| 70 if (item) | |
| 71 selectedItems->AppendElement(static_cast<nsIAccessible*>(item), | |
| 72 false); | |
| 73 } | |
| 74 } else { // Single select? | |
| 75 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm; | |
| 76 mSelectControl->GetSelectedItem(getter_AddRefs(itemElm)); | |
| 77 nsCOMPtr<nsINode> itemNode(do_QueryInterface(itemElm)); | |
| 78 if (itemNode) { | |
| 79 Accessible* item = mDoc->GetAccessible(itemNode); | |
| 80 if (item) | |
| 81 selectedItems->AppendElement(static_cast<nsIAccessible*>(item), | |
| 82 false); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 return selectedItems.forget(); | |
| 87 } | |
| 88 | |
| 89 Accessible* | |
| 90 XULSelectControlAccessible::GetSelectedItem(uint32_t aIndex) | |
| 91 { | |
| 92 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 93 do_QueryInterface(mSelectControl); | |
| 94 | |
| 95 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm; | |
| 96 if (multiSelectControl) | |
| 97 multiSelectControl->MultiGetSelectedItem(aIndex, getter_AddRefs(itemElm)); | |
| 98 else if (aIndex == 0) | |
| 99 mSelectControl->GetSelectedItem(getter_AddRefs(itemElm)); | |
| 100 | |
| 101 nsCOMPtr<nsINode> itemNode(do_QueryInterface(itemElm)); | |
| 102 return itemNode && mDoc ? mDoc->GetAccessible(itemNode) : nullptr; | |
| 103 } | |
| 104 | |
| 105 uint32_t | |
| 106 XULSelectControlAccessible::SelectedItemCount() | |
| 107 { | |
| 108 // For XUL multi-select control | |
| 109 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 110 do_QueryInterface(mSelectControl); | |
| 111 if (multiSelectControl) { | |
| 112 int32_t count = 0; | |
| 113 multiSelectControl->GetSelectedCount(&count); | |
| 114 return count; | |
| 115 } | |
| 116 | |
| 117 // For XUL single-select control/menulist | |
| 118 int32_t index; | |
| 119 mSelectControl->GetSelectedIndex(&index); | |
| 120 return (index >= 0) ? 1 : 0; | |
| 121 } | |
| 122 | |
| 123 bool | |
| 124 XULSelectControlAccessible::AddItemToSelection(uint32_t aIndex) | |
| 125 { | |
| 126 Accessible* item = GetChildAt(aIndex); | |
| 127 if (!item) | |
| 128 return false; | |
| 129 | |
| 130 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm = | |
| 131 do_QueryInterface(item->GetContent()); | |
| 132 if (!itemElm) | |
| 133 return false; | |
| 134 | |
| 135 bool isItemSelected = false; | |
| 136 itemElm->GetSelected(&isItemSelected); | |
| 137 if (isItemSelected) | |
| 138 return true; | |
| 139 | |
| 140 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 141 do_QueryInterface(mSelectControl); | |
| 142 | |
| 143 if (multiSelectControl) | |
| 144 multiSelectControl->AddItemToSelection(itemElm); | |
| 145 else | |
| 146 mSelectControl->SetSelectedItem(itemElm); | |
| 147 | |
| 148 return true; | |
| 149 } | |
| 150 | |
| 151 bool | |
| 152 XULSelectControlAccessible::RemoveItemFromSelection(uint32_t aIndex) | |
| 153 { | |
| 154 Accessible* item = GetChildAt(aIndex); | |
| 155 if (!item) | |
| 156 return false; | |
| 157 | |
| 158 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm = | |
| 159 do_QueryInterface(item->GetContent()); | |
| 160 if (!itemElm) | |
| 161 return false; | |
| 162 | |
| 163 bool isItemSelected = false; | |
| 164 itemElm->GetSelected(&isItemSelected); | |
| 165 if (!isItemSelected) | |
| 166 return true; | |
| 167 | |
| 168 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 169 do_QueryInterface(mSelectControl); | |
| 170 | |
| 171 if (multiSelectControl) | |
| 172 multiSelectControl->RemoveItemFromSelection(itemElm); | |
| 173 else | |
| 174 mSelectControl->SetSelectedItem(nullptr); | |
| 175 | |
| 176 return true; | |
| 177 } | |
| 178 | |
| 179 bool | |
| 180 XULSelectControlAccessible::IsItemSelected(uint32_t aIndex) | |
| 181 { | |
| 182 Accessible* item = GetChildAt(aIndex); | |
| 183 if (!item) | |
| 184 return false; | |
| 185 | |
| 186 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm = | |
| 187 do_QueryInterface(item->GetContent()); | |
| 188 if (!itemElm) | |
| 189 return false; | |
| 190 | |
| 191 bool isItemSelected = false; | |
| 192 itemElm->GetSelected(&isItemSelected); | |
| 193 return isItemSelected; | |
| 194 } | |
| 195 | |
| 196 bool | |
| 197 XULSelectControlAccessible::UnselectAll() | |
| 198 { | |
| 199 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 200 do_QueryInterface(mSelectControl); | |
| 201 multiSelectControl ? | |
| 202 multiSelectControl->ClearSelection() : mSelectControl->SetSelectedIndex(-1); | |
| 203 | |
| 204 return true; | |
| 205 } | |
| 206 | |
| 207 bool | |
| 208 XULSelectControlAccessible::SelectAll() | |
| 209 { | |
| 210 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 211 do_QueryInterface(mSelectControl); | |
| 212 if (multiSelectControl) { | |
| 213 multiSelectControl->SelectAll(); | |
| 214 return true; | |
| 215 } | |
| 216 | |
| 217 // otherwise, don't support this method | |
| 218 return false; | |
| 219 } | |
| 220 | |
| 221 //////////////////////////////////////////////////////////////////////////////// | |
| 222 // XULSelectControlAccessible: Widgets | |
| 223 | |
| 224 Accessible* | |
| 225 XULSelectControlAccessible::CurrentItem() | |
| 226 { | |
| 227 if (!mSelectControl) | |
| 228 return nullptr; | |
| 229 | |
| 230 nsCOMPtr<nsIDOMXULSelectControlItemElement> currentItemElm; | |
| 231 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 232 do_QueryInterface(mSelectControl); | |
| 233 if (multiSelectControl) | |
| 234 multiSelectControl->GetCurrentItem(getter_AddRefs(currentItemElm)); | |
| 235 else | |
| 236 mSelectControl->GetSelectedItem(getter_AddRefs(currentItemElm)); | |
| 237 | |
| 238 nsCOMPtr<nsINode> DOMNode; | |
| 239 if (currentItemElm) | |
| 240 DOMNode = do_QueryInterface(currentItemElm); | |
| 241 | |
| 242 if (DOMNode) { | |
| 243 DocAccessible* document = Document(); | |
| 244 if (document) | |
| 245 return document->GetAccessible(DOMNode); | |
| 246 } | |
| 247 | |
| 248 return nullptr; | |
| 249 } | |
| 250 | |
| 251 void | |
| 252 XULSelectControlAccessible::SetCurrentItem(Accessible* aItem) | |
| 253 { | |
| 254 if (!mSelectControl) | |
| 255 return; | |
| 256 | |
| 257 nsCOMPtr<nsIDOMXULSelectControlItemElement> itemElm = | |
| 258 do_QueryInterface(aItem->GetContent()); | |
| 259 nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelectControl = | |
| 260 do_QueryInterface(mSelectControl); | |
| 261 if (multiSelectControl) | |
| 262 multiSelectControl->SetCurrentItem(itemElm); | |
| 263 else | |
| 264 mSelectControl->SetSelectedItem(itemElm); | |
| 265 } |
