Line data    Source code

       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             : #include "mozilla/dom/HTMLSummaryElement.h"
       7             : 
       8             : #include "mozilla/dom/HTMLDetailsElement.h"
       9             : #include "mozilla/dom/HTMLElementBinding.h"
      10             : #include "mozilla/dom/HTMLUnknownElement.h"
      11             : #include "mozilla/EventDispatcher.h"
      12             : #include "mozilla/MouseEvents.h"
      13             : #include "mozilla/Preferences.h"
      14             : #include "mozilla/TextEvents.h"
      15             : #include "nsFocusManager.h"
      16             : 
      17           0 : NS_IMPL_NS_NEW_HTML_ELEMENT(Summary)
      18             : 
      19             : namespace mozilla {
      20             : namespace dom {
      21             : 
      22           0 : HTMLSummaryElement::~HTMLSummaryElement()
      23             : {
      24           0 : }
      25             : 
      26           0 : NS_IMPL_ELEMENT_CLONE(HTMLSummaryElement)
      27             : 
      28             : nsresult
      29           0 : HTMLSummaryElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
      30             : {
      31           0 :   nsresult rv = NS_OK;
      32           0 :   if (!aVisitor.mPresContext) {
      33           0 :     return rv;
      34             :   }
      35             : 
      36           0 :   if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
      37           0 :     return rv;
      38             :   }
      39             : 
      40           0 :   if (!IsMainSummary()) {
      41           0 :     return rv;
      42             :   }
      43             : 
      44           0 :   WidgetEvent* const event = aVisitor.mEvent;
      45             : 
      46           0 :   if (event->HasMouseEventMessage()) {
      47           0 :     WidgetMouseEvent* mouseEvent = event->AsMouseEvent();
      48             : 
      49           0 :     if (mouseEvent->IsLeftClickEvent()) {
      50           0 :       RefPtr<HTMLDetailsElement> details = GetDetails();
      51           0 :       MOZ_ASSERT(details,
      52             :                  "Expected to find details since this is the main summary!");
      53             : 
      54             :       // When dispatching a synthesized mouse click event to a details element
      55             :       // with 'display: none', both Chrome and Safari do not toggle the 'open'
      56             :       // attribute. We had tried to be compatible with this behavior, but found
      57             :       // more inconsistency in test cases in bug 1245424. So we stop doing that.
      58           0 :       details->ToggleOpen();
      59           0 :       aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
      60           0 :       return NS_OK;
      61             :     }
      62             :   } // event->HasMouseEventMessage()
      63             : 
      64           0 :   if (event->HasKeyEventMessage()) {
      65           0 :     WidgetKeyboardEvent* keyboardEvent = event->AsKeyboardEvent();
      66           0 :     bool dispatchClick = false;
      67             : 
      68           0 :     switch (event->mMessage) {
      69             :       case eKeyPress:
      70           0 :         if (keyboardEvent->mCharCode == ' ') {
      71             :           // Consume 'space' key to prevent scrolling the page down.
      72           0 :           aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
      73             :         }
      74             : 
      75           0 :         dispatchClick = keyboardEvent->mKeyCode == NS_VK_RETURN;
      76           0 :         break;
      77             : 
      78             :       case eKeyUp:
      79           0 :         dispatchClick = keyboardEvent->mKeyCode == NS_VK_SPACE;
      80           0 :         break;
      81             : 
      82             :       default:
      83           0 :         break;
      84             :     }
      85             : 
      86           0 :     if (dispatchClick) {
      87           0 :       rv = DispatchSimulatedClick(this, event->mFlags.mIsTrusted,
      88           0 :                                   aVisitor.mPresContext);
      89           0 :       if (NS_SUCCEEDED(rv)) {
      90           0 :         aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
      91             :       }
      92             :     }
      93             :   } // event->HasKeyEventMessage()
      94             : 
      95           0 :   return rv;
      96             : }
      97             : 
      98             : bool
      99           0 : HTMLSummaryElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
     100             :                                     int32_t* aTabIndex)
     101             : {
     102             :   bool disallowOverridingFocusability =
     103           0 :     nsGenericHTMLElement::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex);
     104             : 
     105           0 :   if (disallowOverridingFocusability || !IsMainSummary()) {
     106           0 :     return disallowOverridingFocusability;
     107             :   }
     108             : 
     109             : #ifdef XP_MACOSX
     110             :   // The parent does not have strong opinion about the focusability of this main
     111             :   // summary element, but we'd like to override it when mouse clicking on Mac OS
     112             :   // like other form elements.
     113             :   *aIsFocusable = !aWithMouse || nsFocusManager::sMouseFocusesFormControl;
     114             : #else
     115             :   // The main summary element is focusable on other platforms.
     116           0 :   *aIsFocusable = true;
     117             : #endif
     118             : 
     119             :   // Give a chance to allow the subclass to override aIsFocusable.
     120           0 :   return false;
     121             : }
     122             : 
     123             : int32_t
     124           0 : HTMLSummaryElement::TabIndexDefault()
     125             : {
     126             :   // Make the main summary be able to navigate via tab, and be focusable.
     127             :   // See nsGenericHTMLElement::IsHTMLFocusable().
     128           0 :   return IsMainSummary() ? 0 : nsGenericHTMLElement::TabIndexDefault();
     129             : }
     130             : 
     131             : bool
     132           0 : HTMLSummaryElement::IsMainSummary() const
     133             : {
     134           0 :   HTMLDetailsElement* details = GetDetails();
     135           0 :   if (!details) {
     136           0 :     return false;
     137             :   }
     138             : 
     139           0 :   return details->GetFirstSummary() == this || IsRootOfNativeAnonymousSubtree();
     140             : }
     141             : 
     142             : HTMLDetailsElement*
     143           0 : HTMLSummaryElement::GetDetails() const
     144             : {
     145           0 :   return HTMLDetailsElement::FromContentOrNull(GetParent());
     146             : }
     147             : 
     148             : JSObject*
     149           0 : HTMLSummaryElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
     150             : {
     151           0 :   return HTMLElementBinding::Wrap(aCx, this, aGivenProto);
     152             : }
     153             : 
     154             : } // namespace dom
     155             : } // namespace mozilla