LCOV - code coverage report
Current view: directory - content/xbl/src - nsXBLEventHandler.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 89 0 0.0 %
Date: 2012-06-02 Functions: 21 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Brendan Eich (brendan@mozilla.org)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsCOMPtr.h"
      40                 : #include "nsIAtom.h"
      41                 : #include "nsIContent.h"
      42                 : #include "nsIDOMEventListener.h"
      43                 : #include "nsIDOMEventTarget.h"
      44                 : #include "nsIDOMKeyEvent.h"
      45                 : #include "nsIDOMMouseEvent.h"
      46                 : #include "nsGkAtoms.h"
      47                 : #include "nsXBLPrototypeHandler.h"
      48                 : #include "nsIDOMNSEvent.h"
      49                 : #include "nsGUIEvent.h"
      50                 : #include "nsContentUtils.h"
      51                 : #include "nsUnicharUtils.h"
      52                 : 
      53               0 : nsXBLEventHandler::nsXBLEventHandler(nsXBLPrototypeHandler* aHandler)
      54               0 :   : mProtoHandler(aHandler)
      55                 : {
      56               0 : }
      57                 : 
      58               0 : nsXBLEventHandler::~nsXBLEventHandler()
      59                 : {
      60               0 : }
      61                 : 
      62               0 : NS_IMPL_ISUPPORTS1(nsXBLEventHandler, nsIDOMEventListener)
      63                 : 
      64                 : NS_IMETHODIMP
      65               0 : nsXBLEventHandler::HandleEvent(nsIDOMEvent* aEvent)
      66                 : {
      67               0 :   if (!mProtoHandler)
      68               0 :     return NS_ERROR_FAILURE;
      69                 : 
      70               0 :   PRUint8 phase = mProtoHandler->GetPhase();
      71               0 :   if (phase == NS_PHASE_TARGET) {
      72                 :     PRUint16 eventPhase;
      73               0 :     aEvent->GetEventPhase(&eventPhase);
      74               0 :     if (eventPhase != nsIDOMEvent::AT_TARGET)
      75               0 :       return NS_OK;
      76                 :   }
      77                 : 
      78               0 :   if (!EventMatched(aEvent))
      79               0 :     return NS_OK;
      80                 : 
      81               0 :   nsCOMPtr<nsIDOMEventTarget> target;
      82               0 :   aEvent->GetCurrentTarget(getter_AddRefs(target));
      83                 : 
      84               0 :   mProtoHandler->ExecuteHandler(target, aEvent);
      85                 : 
      86               0 :   return NS_OK;
      87                 : }
      88                 : 
      89               0 : nsXBLMouseEventHandler::nsXBLMouseEventHandler(nsXBLPrototypeHandler* aHandler)
      90               0 :   : nsXBLEventHandler(aHandler)
      91                 : {
      92               0 : }
      93                 : 
      94               0 : nsXBLMouseEventHandler::~nsXBLMouseEventHandler()
      95                 : {
      96               0 : }
      97                 : 
      98                 : bool
      99               0 : nsXBLMouseEventHandler::EventMatched(nsIDOMEvent* aEvent)
     100                 : {
     101               0 :   nsCOMPtr<nsIDOMMouseEvent> mouse(do_QueryInterface(aEvent));
     102               0 :   return mouse && mProtoHandler->MouseEventMatched(mouse);
     103                 : }
     104                 : 
     105               0 : nsXBLKeyEventHandler::nsXBLKeyEventHandler(nsIAtom* aEventType, PRUint8 aPhase,
     106                 :                                            PRUint8 aType)
     107                 :   : mEventType(aEventType),
     108                 :     mPhase(aPhase),
     109                 :     mType(aType),
     110               0 :     mIsBoundToChrome(false)
     111                 : {
     112               0 : }
     113                 : 
     114               0 : nsXBLKeyEventHandler::~nsXBLKeyEventHandler()
     115                 : {
     116               0 : }
     117                 : 
     118               0 : NS_IMPL_ISUPPORTS1(nsXBLKeyEventHandler, nsIDOMEventListener)
     119                 : 
     120                 : bool
     121               0 : nsXBLKeyEventHandler::ExecuteMatchedHandlers(nsIDOMKeyEvent* aKeyEvent,
     122                 :                                              PRUint32 aCharCode,
     123                 :                                              bool aIgnoreShiftKey)
     124                 : {
     125               0 :   nsCOMPtr<nsIDOMNSEvent> domNSEvent = do_QueryInterface(aKeyEvent);
     126               0 :   bool trustedEvent = false;
     127               0 :   if (domNSEvent)
     128               0 :     domNSEvent->GetIsTrusted(&trustedEvent);
     129                 : 
     130               0 :   nsCOMPtr<nsIDOMEventTarget> target;
     131               0 :   aKeyEvent->GetCurrentTarget(getter_AddRefs(target));
     132                 : 
     133               0 :   bool executed = false;
     134               0 :   for (PRUint32 i = 0; i < mProtoHandlers.Length(); ++i) {
     135               0 :     nsXBLPrototypeHandler* handler = mProtoHandlers[i];
     136               0 :     bool hasAllowUntrustedAttr = handler->HasAllowUntrustedAttr();
     137               0 :     if ((trustedEvent ||
     138               0 :         (hasAllowUntrustedAttr && handler->AllowUntrustedEvents()) ||
     139               0 :         (!hasAllowUntrustedAttr && !mIsBoundToChrome)) &&
     140               0 :         handler->KeyEventMatched(aKeyEvent, aCharCode, aIgnoreShiftKey)) {
     141               0 :       handler->ExecuteHandler(target, aKeyEvent);
     142               0 :       executed = true;
     143                 :     }
     144                 :   }
     145               0 :   return executed;
     146                 : }
     147                 : 
     148                 : NS_IMETHODIMP
     149               0 : nsXBLKeyEventHandler::HandleEvent(nsIDOMEvent* aEvent)
     150                 : {
     151               0 :   PRUint32 count = mProtoHandlers.Length();
     152               0 :   if (count == 0)
     153               0 :     return NS_ERROR_FAILURE;
     154                 : 
     155               0 :   if (mPhase == NS_PHASE_TARGET) {
     156                 :     PRUint16 eventPhase;
     157               0 :     aEvent->GetEventPhase(&eventPhase);
     158               0 :     if (eventPhase != nsIDOMEvent::AT_TARGET)
     159               0 :       return NS_OK;
     160                 :   }
     161                 : 
     162               0 :   nsCOMPtr<nsIDOMKeyEvent> key(do_QueryInterface(aEvent));
     163               0 :   if (!key)
     164               0 :     return NS_OK;
     165                 : 
     166               0 :   nsAutoTArray<nsShortcutCandidate, 10> accessKeys;
     167               0 :   nsContentUtils::GetAccelKeyCandidates(key, accessKeys);
     168                 : 
     169               0 :   if (accessKeys.IsEmpty()) {
     170               0 :     ExecuteMatchedHandlers(key, 0, false);
     171               0 :     return NS_OK;
     172                 :   }
     173                 : 
     174               0 :   for (PRUint32 i = 0; i < accessKeys.Length(); ++i) {
     175               0 :     if (ExecuteMatchedHandlers(key, accessKeys[i].mCharCode,
     176               0 :                                accessKeys[i].mIgnoreShift))
     177               0 :       return NS_OK;
     178                 :   }
     179               0 :   return NS_OK;
     180                 : }
     181                 : 
     182                 : ///////////////////////////////////////////////////////////////////////////////////
     183                 : 
     184                 : nsresult
     185               0 : NS_NewXBLEventHandler(nsXBLPrototypeHandler* aHandler,
     186                 :                       nsIAtom* aEventType,
     187                 :                       nsXBLEventHandler** aResult)
     188                 : {
     189               0 :   switch (nsContentUtils::GetEventCategory(nsDependentAtomString(aEventType))) {
     190                 :     case NS_DRAG_EVENT:
     191                 :     case NS_MOUSE_EVENT:
     192                 :     case NS_MOUSE_SCROLL_EVENT:
     193                 :     case NS_SIMPLE_GESTURE_EVENT:
     194               0 :       *aResult = new nsXBLMouseEventHandler(aHandler);
     195               0 :       break;
     196                 :     default:
     197               0 :       *aResult = new nsXBLEventHandler(aHandler);
     198               0 :       break;
     199                 :   }
     200                 : 
     201               0 :   if (!*aResult)
     202               0 :     return NS_ERROR_OUT_OF_MEMORY;
     203                 : 
     204               0 :   NS_ADDREF(*aResult);
     205                 : 
     206               0 :   return NS_OK;
     207                 : }
     208                 : 
     209                 : nsresult
     210               0 : NS_NewXBLKeyEventHandler(nsIAtom* aEventType, PRUint8 aPhase, PRUint8 aType,
     211                 :                          nsXBLKeyEventHandler** aResult)
     212                 : {
     213               0 :   *aResult = new nsXBLKeyEventHandler(aEventType, aPhase, aType);
     214                 : 
     215               0 :   if (!*aResult)
     216               0 :     return NS_ERROR_OUT_OF_MEMORY;
     217                 : 
     218               0 :   NS_ADDREF(*aResult);
     219                 : 
     220               0 :   return NS_OK;
     221                 : }

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