The Tor Browser / file comparison
comparison: embedding/browser/webBrowser/nsCommandHandler.cpp
embedding/browser/webBrowser/nsCommandHandler.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:7748c01fc75b |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 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 "nsCommandHandler.h" | |
| 8 #include "nsWebBrowser.h" | |
| 9 #include "nsDocShellTreeOwner.h" | |
| 10 | |
| 11 #include "nsMemory.h" | |
| 12 #include "nsPIDOMWindow.h" | |
| 13 | |
| 14 nsCommandHandler::nsCommandHandler() : | |
| 15 mWindow(nullptr) | |
| 16 { | |
| 17 } | |
| 18 | |
| 19 nsCommandHandler::~nsCommandHandler() | |
| 20 { | |
| 21 } | |
| 22 | |
| 23 nsresult nsCommandHandler::GetCommandHandler(nsICommandHandler **aCommandHandler) | |
| 24 { | |
| 25 NS_ENSURE_ARG_POINTER(aCommandHandler); | |
| 26 | |
| 27 *aCommandHandler = nullptr; | |
| 28 if (mWindow == nullptr) | |
| 29 { | |
| 30 return NS_ERROR_FAILURE; | |
| 31 } | |
| 32 | |
| 33 nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(mWindow)); | |
| 34 if (!window) | |
| 35 { | |
| 36 return NS_ERROR_FAILURE; | |
| 37 } | |
| 38 | |
| 39 // Get the document tree owner | |
| 40 | |
| 41 nsCOMPtr<nsIDocShellTreeItem> docShellAsTreeItem = | |
| 42 do_QueryInterface(window->GetDocShell()); | |
| 43 nsIDocShellTreeOwner *treeOwner = nullptr; | |
| 44 docShellAsTreeItem->GetTreeOwner(&treeOwner); | |
| 45 | |
| 46 // Make sure the tree owner is an an nsDocShellTreeOwner object | |
| 47 // by QI'ing for a hidden interface. If it doesn't have the interface | |
| 48 // then it's not safe to do the casting. | |
| 49 | |
| 50 nsCOMPtr<nsICDocShellTreeOwner> realTreeOwner(do_QueryInterface(treeOwner)); | |
| 51 if (realTreeOwner) | |
| 52 { | |
| 53 nsDocShellTreeOwner *tree = static_cast<nsDocShellTreeOwner *>(treeOwner); | |
| 54 if (tree->mTreeOwner) | |
| 55 { | |
| 56 nsresult rv; | |
| 57 rv = tree->mTreeOwner->QueryInterface(NS_GET_IID(nsICommandHandler), (void **)aCommandHandler); | |
| 58 NS_RELEASE(treeOwner); | |
| 59 return rv; | |
| 60 } | |
| 61 | |
| 62 NS_RELEASE(treeOwner); | |
| 63 } | |
| 64 | |
| 65 *aCommandHandler = nullptr; | |
| 66 | |
| 67 return NS_OK; | |
| 68 } | |
| 69 | |
| 70 | |
| 71 NS_IMPL_ADDREF(nsCommandHandler) | |
| 72 NS_IMPL_RELEASE(nsCommandHandler) | |
| 73 | |
| 74 NS_INTERFACE_MAP_BEGIN(nsCommandHandler) | |
| 75 NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICommandHandler) | |
| 76 NS_INTERFACE_MAP_ENTRY(nsICommandHandlerInit) | |
| 77 NS_INTERFACE_MAP_ENTRY(nsICommandHandler) | |
| 78 NS_INTERFACE_MAP_END | |
| 79 | |
| 80 /////////////////////////////////////////////////////////////////////////////// | |
| 81 // nsICommandHandlerInit implementation | |
| 82 | |
| 83 /* attribute nsIDocShell docShell; */ | |
| 84 NS_IMETHODIMP nsCommandHandler::GetWindow(nsIDOMWindow * *aWindow) | |
| 85 { | |
| 86 *aWindow = nullptr; | |
| 87 return NS_OK; | |
| 88 } | |
| 89 | |
| 90 NS_IMETHODIMP nsCommandHandler::SetWindow(nsIDOMWindow * aWindow) | |
| 91 { | |
| 92 if (aWindow == nullptr) | |
| 93 { | |
| 94 return NS_ERROR_FAILURE; | |
| 95 } | |
| 96 mWindow = aWindow; | |
| 97 return NS_OK; | |
| 98 } | |
| 99 | |
| 100 /////////////////////////////////////////////////////////////////////////////// | |
| 101 // nsICommandHandler implementation | |
| 102 | |
| 103 /* string exec (in string aCommand, in string aStatus); */ | |
| 104 NS_IMETHODIMP nsCommandHandler::Exec(const char *aCommand, const char *aStatus, char **aResult) | |
| 105 { | |
| 106 NS_ENSURE_ARG_POINTER(aCommand); | |
| 107 NS_ENSURE_ARG_POINTER(aResult); | |
| 108 | |
| 109 nsCOMPtr<nsICommandHandler> commandHandler; | |
| 110 GetCommandHandler(getter_AddRefs(commandHandler)); | |
| 111 | |
| 112 // Call the client's command handler to deal with this command | |
| 113 if (commandHandler) | |
| 114 { | |
| 115 *aResult = nullptr; | |
| 116 return commandHandler->Exec(aCommand, aStatus, aResult); | |
| 117 } | |
| 118 | |
| 119 // Return an empty string | |
| 120 const char szEmpty[] = ""; | |
| 121 *aResult = (char *) nsMemory::Clone(szEmpty, sizeof(szEmpty)); | |
| 122 | |
| 123 return NS_OK; | |
| 124 } | |
| 125 | |
| 126 /* string query (in string aCommand, in string aStatus); */ | |
| 127 NS_IMETHODIMP nsCommandHandler::Query(const char *aCommand, const char *aStatus, char **aResult) | |
| 128 { | |
| 129 NS_ENSURE_ARG_POINTER(aCommand); | |
| 130 NS_ENSURE_ARG_POINTER(aResult); | |
| 131 | |
| 132 nsCOMPtr<nsICommandHandler> commandHandler; | |
| 133 GetCommandHandler(getter_AddRefs(commandHandler)); | |
| 134 | |
| 135 // Call the client's command handler to deal with this command | |
| 136 if (commandHandler) | |
| 137 { | |
| 138 *aResult = nullptr; | |
| 139 return commandHandler->Query(aCommand, aStatus, aResult); | |
| 140 } | |
| 141 | |
| 142 // Return an empty string | |
| 143 const char szEmpty[] = ""; | |
| 144 *aResult = (char *) nsMemory::Clone(szEmpty, sizeof(szEmpty)); | |
| 145 | |
| 146 return NS_OK; | |
| 147 } |
