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comparison: content/xul/document/src/nsXULControllers.cpp
content/xul/document/src/nsXULControllers.cpp
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 | |
| 8 This file provides the implementation for the XUL "controllers" | |
| 9 object. | |
| 10 | |
| 11 */ | |
| 12 | |
| 13 #include "nsString.h" | |
| 14 | |
| 15 #include "nsIControllers.h" | |
| 16 #include "nsIDOMElement.h" | |
| 17 #include "nsXULControllers.h" | |
| 18 #include "nsDOMClassInfoID.h" | |
| 19 #include "nsIController.h" | |
| 20 | |
| 21 //---------------------------------------------------------------------- | |
| 22 | |
| 23 nsXULControllers::nsXULControllers() | |
| 24 : mCurControllerID(0) | |
| 25 { | |
| 26 } | |
| 27 | |
| 28 nsXULControllers::~nsXULControllers(void) | |
| 29 { | |
| 30 DeleteControllers(); | |
| 31 } | |
| 32 | |
| 33 void | |
| 34 nsXULControllers::DeleteControllers() | |
| 35 { | |
| 36 uint32_t count = mControllers.Length(); | |
| 37 for (uint32_t i = 0; i < count; i++) | |
| 38 { | |
| 39 nsXULControllerData* controllerData = mControllers.ElementAt(i); | |
| 40 delete controllerData; // releases the nsIController | |
| 41 } | |
| 42 | |
| 43 mControllers.Clear(); | |
| 44 } | |
| 45 | |
| 46 | |
| 47 nsresult | |
| 48 NS_NewXULControllers(nsISupports* aOuter, REFNSIID aIID, void** aResult) | |
| 49 { | |
| 50 NS_PRECONDITION(aOuter == nullptr, "no aggregation"); | |
| 51 if (aOuter) | |
| 52 return NS_ERROR_NO_AGGREGATION; | |
| 53 | |
| 54 nsXULControllers* controllers = new nsXULControllers(); | |
| 55 if (! controllers) | |
| 56 return NS_ERROR_OUT_OF_MEMORY; | |
| 57 | |
| 58 nsresult rv; | |
| 59 NS_ADDREF(controllers); | |
| 60 rv = controllers->QueryInterface(aIID, aResult); | |
| 61 NS_RELEASE(controllers); | |
| 62 return rv; | |
| 63 } | |
| 64 | |
| 65 NS_IMPL_CYCLE_COLLECTION_CLASS(nsXULControllers) | |
| 66 | |
| 67 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXULControllers) | |
| 68 tmp->DeleteControllers(); | |
| 69 NS_IMPL_CYCLE_COLLECTION_UNLINK_END | |
| 70 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXULControllers) | |
| 71 { | |
| 72 uint32_t i, count = tmp->mControllers.Length(); | |
| 73 for (i = 0; i < count; ++i) { | |
| 74 nsXULControllerData* controllerData = tmp->mControllers[i]; | |
| 75 if (controllerData) { | |
| 76 cb.NoteXPCOMChild(controllerData->mController); | |
| 77 } | |
| 78 } | |
| 79 } | |
| 80 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END | |
| 81 | |
| 82 DOMCI_DATA(XULControllers, nsXULControllers) | |
| 83 | |
| 84 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULControllers) | |
| 85 NS_INTERFACE_MAP_ENTRY(nsIControllers) | |
| 86 NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIControllers) | |
| 87 NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(XULControllers) | |
| 88 NS_INTERFACE_MAP_END | |
| 89 | |
| 90 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULControllers) | |
| 91 NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULControllers) | |
| 92 | |
| 93 NS_IMETHODIMP | |
| 94 nsXULControllers::GetControllerForCommand(const char *aCommand, nsIController** _retval) | |
| 95 { | |
| 96 NS_ENSURE_ARG_POINTER(_retval); | |
| 97 *_retval = nullptr; | |
| 98 | |
| 99 uint32_t count = mControllers.Length(); | |
| 100 for (uint32_t i=0; i < count; i++) | |
| 101 { | |
| 102 nsXULControllerData* controllerData = mControllers.ElementAt(i); | |
| 103 if (controllerData) | |
| 104 { | |
| 105 nsCOMPtr<nsIController> controller; | |
| 106 controllerData->GetController(getter_AddRefs(controller)); | |
| 107 if (controller) | |
| 108 { | |
| 109 bool supportsCommand; | |
| 110 controller->SupportsCommand(aCommand, &supportsCommand); | |
| 111 if (supportsCommand) { | |
| 112 *_retval = controller; | |
| 113 NS_ADDREF(*_retval); | |
| 114 return NS_OK; | |
| 115 } | |
| 116 } | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 return NS_OK; | |
| 121 } | |
| 122 | |
| 123 NS_IMETHODIMP | |
| 124 nsXULControllers::InsertControllerAt(uint32_t aIndex, nsIController *controller) | |
| 125 { | |
| 126 nsXULControllerData* controllerData = new nsXULControllerData(++mCurControllerID, controller); | |
| 127 if (!controllerData) return NS_ERROR_OUT_OF_MEMORY; | |
| 128 #ifdef DEBUG | |
| 129 nsXULControllerData** inserted = | |
| 130 #endif | |
| 131 mControllers.InsertElementAt(aIndex, controllerData); | |
| 132 NS_ASSERTION(inserted != nullptr, "Insertion of controller failed"); | |
| 133 return NS_OK; | |
| 134 } | |
| 135 | |
| 136 NS_IMETHODIMP | |
| 137 nsXULControllers::RemoveControllerAt(uint32_t aIndex, nsIController **_retval) | |
| 138 { | |
| 139 NS_ENSURE_ARG_POINTER(_retval); | |
| 140 *_retval = nullptr; | |
| 141 | |
| 142 nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex); | |
| 143 if (!controllerData) return NS_ERROR_FAILURE; | |
| 144 | |
| 145 mControllers.RemoveElementAt(aIndex); | |
| 146 | |
| 147 controllerData->GetController(_retval); | |
| 148 delete controllerData; | |
| 149 | |
| 150 return NS_OK; | |
| 151 } | |
| 152 | |
| 153 | |
| 154 NS_IMETHODIMP | |
| 155 nsXULControllers::GetControllerAt(uint32_t aIndex, nsIController **_retval) | |
| 156 { | |
| 157 NS_ENSURE_ARG_POINTER(_retval); | |
| 158 *_retval = nullptr; | |
| 159 | |
| 160 nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex); | |
| 161 if (!controllerData) return NS_ERROR_FAILURE; | |
| 162 | |
| 163 return controllerData->GetController(_retval); // does the addref | |
| 164 } | |
| 165 | |
| 166 NS_IMETHODIMP | |
| 167 nsXULControllers::AppendController(nsIController *controller) | |
| 168 { | |
| 169 // This assigns controller IDs starting at 1 so we can use 0 to test if an ID was obtained | |
| 170 nsXULControllerData* controllerData = new nsXULControllerData(++mCurControllerID, controller); | |
| 171 if (!controllerData) return NS_ERROR_OUT_OF_MEMORY; | |
| 172 | |
| 173 #ifdef DEBUG | |
| 174 nsXULControllerData** appended = | |
| 175 #endif | |
| 176 mControllers.AppendElement(controllerData); | |
| 177 NS_ASSERTION(appended != nullptr, "Appending controller failed"); | |
| 178 return NS_OK; | |
| 179 } | |
| 180 | |
| 181 NS_IMETHODIMP | |
| 182 nsXULControllers::RemoveController(nsIController *controller) | |
| 183 { | |
| 184 // first get the identity pointer | |
| 185 nsCOMPtr<nsISupports> controllerSup(do_QueryInterface(controller)); | |
| 186 // then find it | |
| 187 uint32_t count = mControllers.Length(); | |
| 188 for (uint32_t i = 0; i < count; i++) | |
| 189 { | |
| 190 nsXULControllerData* controllerData = mControllers.ElementAt(i); | |
| 191 if (controllerData) | |
| 192 { | |
| 193 nsCOMPtr<nsIController> thisController; | |
| 194 controllerData->GetController(getter_AddRefs(thisController)); | |
| 195 nsCOMPtr<nsISupports> thisControllerSup(do_QueryInterface(thisController)); // get identity | |
| 196 if (thisControllerSup == controllerSup) | |
| 197 { | |
| 198 mControllers.RemoveElementAt(i); | |
| 199 delete controllerData; | |
| 200 return NS_OK; | |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 return NS_ERROR_FAILURE; // right thing to return if no controller found? | |
| 205 } | |
| 206 | |
| 207 /* unsigned long getControllerId (in nsIController controller); */ | |
| 208 NS_IMETHODIMP | |
| 209 nsXULControllers::GetControllerId(nsIController *controller, uint32_t *_retval) | |
| 210 { | |
| 211 NS_ENSURE_ARG_POINTER(_retval); | |
| 212 | |
| 213 uint32_t count = mControllers.Length(); | |
| 214 for (uint32_t i = 0; i < count; i++) | |
| 215 { | |
| 216 nsXULControllerData* controllerData = mControllers.ElementAt(i); | |
| 217 if (controllerData) | |
| 218 { | |
| 219 nsCOMPtr<nsIController> thisController; | |
| 220 controllerData->GetController(getter_AddRefs(thisController)); | |
| 221 if (thisController.get() == controller) | |
| 222 { | |
| 223 *_retval = controllerData->GetControllerID(); | |
| 224 return NS_OK; | |
| 225 } | |
| 226 } | |
| 227 } | |
| 228 return NS_ERROR_FAILURE; // none found | |
| 229 } | |
| 230 | |
| 231 /* nsIController getControllerById (in unsigned long controllerID); */ | |
| 232 NS_IMETHODIMP | |
| 233 nsXULControllers::GetControllerById(uint32_t controllerID, nsIController **_retval) | |
| 234 { | |
| 235 NS_ENSURE_ARG_POINTER(_retval); | |
| 236 | |
| 237 uint32_t count = mControllers.Length(); | |
| 238 for (uint32_t i = 0; i < count; i++) | |
| 239 { | |
| 240 nsXULControllerData* controllerData = mControllers.ElementAt(i); | |
| 241 if (controllerData && controllerData->GetControllerID() == controllerID) | |
| 242 { | |
| 243 return controllerData->GetController(_retval); | |
| 244 } | |
| 245 } | |
| 246 return NS_ERROR_FAILURE; // none found | |
| 247 } | |
| 248 | |
| 249 NS_IMETHODIMP | |
| 250 nsXULControllers::GetControllerCount(uint32_t *_retval) | |
| 251 { | |
| 252 NS_ENSURE_ARG_POINTER(_retval); | |
| 253 *_retval = mControllers.Length(); | |
| 254 return NS_OK; | |
| 255 } | |
| 256 |
