dom::EventTarget*
WidgetEvent::GetOriginalDOMEventTarget() const
{
if (mOriginalTarget) {
return GetTargetForDOMEvent(mOriginalTarget);
}
return GetDOMEventTarget();
}
nsresult
HTMLEditor::StartResizing(nsIDOMElement* aHandle)
{
mIsResizing = true;
mActivatedHandle = do_QueryInterface(aHandle);
NS_ENSURE_STATE(mActivatedHandle || !aHandle);
mActivatedHandle->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_activated,
NS_LITERAL_STRING("true"), true);
// do we want to preserve ratio or not?
bool preserveRatio = HTMLEditUtils::IsImage(mResizedObject) &&
Preferences::GetBool("editor.resizing.preserve_ratio", true);
// the way we change the position/size of the shadow depends on
// the handle
nsAutoString locationStr;
aHandle->GetAttribute(NS_LITERAL_STRING("anonlocation"), locationStr);
if (locationStr.Equals(kTopLeft)) {
SetResizeIncrements(1, 1, -1, -1, preserveRatio);
} else if (locationStr.Equals(kTop)) {
SetResizeIncrements(0, 1, 0, -1, false);
} else if (locationStr.Equals(kTopRight)) {
SetResizeIncrements(0, 1, 1, -1, preserveRatio);
} else if (locationStr.Equals(kLeft)) {
SetResizeIncrements(1, 0, -1, 0, false);
} else if (locationStr.Equals(kRight)) {
SetResizeIncrements(0, 0, 1, 0, false);
} else if (locationStr.Equals(kBottomLeft)) {
SetResizeIncrements(1, 0, -1, 1, preserveRatio);
} else if (locationStr.Equals(kBottom)) {
SetResizeIncrements(0, 0, 0, 1, false);
} else if (locationStr.Equals(kBottomRight)) {
SetResizeIncrements(0, 0, 1, 1, preserveRatio);
}
// make the shadow appear
mResizingShadow->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_class, true);
// position it
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::width,
mResizedObjectWidth);
mCSSEditUtils->SetCSSPropertyPixels(*mResizingShadow, *nsGkAtoms::height,
mResizedObjectHeight);
// add a mouse move listener to the editor
nsresult result = NS_OK;
if (!mMouseMotionListenerP) {
mMouseMotionListenerP = new ResizerMouseMotionListener(*this);
if (!mMouseMotionListenerP) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIDOMEventTarget> target = GetDOMEventTarget();
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
result = target->AddEventListener(NS_LITERAL_STRING("mousemove"),
mMouseMotionListenerP, true);
NS_ASSERTION(NS_SUCCEEDED(result),
"failed to register mouse motion listener");
}
return result;
}
NS_IMETHODIMP
HTMLEditor::HideResizers()
{
NS_ENSURE_TRUE(mResizedObject, NS_OK);
// get the presshell's document observer interface.
nsCOMPtr<nsIPresShell> ps = GetPresShell();
// We allow the pres shell to be null; when it is, we presume there
// are no document observers to notify, but we still want to
// UnbindFromTree.
NS_NAMED_LITERAL_STRING(mousedown, "mousedown");
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mTopRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomLeftHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mBottomRightHandle), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mResizingShadow), ps);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
Move(mResizingInfo), ps);
if (mActivatedHandle) {
mActivatedHandle->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_activated,
true);
mActivatedHandle = nullptr;
}
// don't forget to remove the listeners !
nsCOMPtr<nsIDOMEventTarget> target = GetDOMEventTarget();
if (target && mMouseMotionListenerP) {
DebugOnly<nsresult> rv =
target->RemoveEventListener(NS_LITERAL_STRING("mousemove"),
mMouseMotionListenerP, true);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to remove mouse motion listener");
}
mMouseMotionListenerP = nullptr;
nsCOMPtr<nsIDocument> doc = GetDocument();
if (!doc) {
return NS_ERROR_NULL_POINTER;
}
target = do_QueryInterface(doc->GetWindow());
if (!target) {
return NS_ERROR_NULL_POINTER;
}
if (mResizeEventListenerP) {
DebugOnly<nsresult> rv =
target->RemoveEventListener(NS_LITERAL_STRING("resize"),
mResizeEventListenerP, false);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to remove resize event listener");
}
mResizeEventListenerP = nullptr;
mResizedObject->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_resizing, true);
mResizedObject = nullptr;
return NS_OK;
}