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fix crash in nsMenuX::OnCreate(). b=443455 r=smichaud sr=roc

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This commit is contained in:
Josh Aas 2008-07-18 13:38:03 -04:00
parent 831500ce51
commit 4a561956f4
1 changed files with 51 additions and 44 deletions
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95
widget/src/cocoa/nsMenuX.mm
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@ -593,58 +593,65 @@ PRBool nsMenuX::OnOpen()
// If the open is going to succeed we need to walk our menu items, checking to
// see if any of them have a command attribute. If so, several apptributes
// must potentially be updated.
if (popupContent) {
nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(popupContent->GetDocument()));
PRUint32 count = popupContent->GetChildCount();
for (PRUint32 i = 0; i < count; i++) {
nsIContent *grandChild = popupContent->GetChildAt(i);
if (grandChild->Tag() == nsWidgetAtoms::menuitem) {
// See if we have a command attribute.
nsAutoString command;
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::command, command);
if (!command.IsEmpty()) {
// We do! Look it up in our document
nsCOMPtr<nsIDOMElement> commandElt;
domDoc->GetElementById(command, getter_AddRefs(commandElt));
nsCOMPtr<nsIContent> commandContent(do_QueryInterface(commandElt));
// Get new popup content first since it might have changed as a result of the
// NS_XUL_POPUP_SHOWING event above.
GetMenuPopupContent(getter_AddRefs(popupContent));
if (!popupContent)
return PR_TRUE;
if (commandContent) {
nsAutoString commandDisabled, menuDisabled;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, commandDisabled);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, menuDisabled);
if (!commandDisabled.Equals(menuDisabled)) {
// The menu's disabled state needs to be updated to match the command.
if (commandDisabled.IsEmpty())
grandChild->UnsetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, PR_TRUE);
else
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, commandDisabled, PR_TRUE);
}
nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(popupContent->GetDocument()));
if (!domDoc)
return PR_TRUE;
// The menu's value and checked states need to be updated to match the command.
// Note that (unlike the disabled state) if the command has *no* value for either, we
// assume the menu is supplying its own.
nsAutoString commandChecked, menuChecked;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, commandChecked);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, menuChecked);
if (!commandChecked.Equals(menuChecked)) {
if (!commandChecked.IsEmpty())
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, commandChecked, PR_TRUE);
}
nsAutoString commandValue, menuValue;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::label, commandValue);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::label, menuValue);
if (!commandValue.Equals(menuValue)) {
if (!commandValue.IsEmpty())
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::label, commandValue, PR_TRUE);
}
PRUint32 count = popupContent->GetChildCount();
for (PRUint32 i = 0; i < count; i++) {
nsIContent *grandChild = popupContent->GetChildAt(i);
if (grandChild->Tag() == nsWidgetAtoms::menuitem) {
// See if we have a command attribute.
nsAutoString command;
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::command, command);
if (!command.IsEmpty()) {
// We do! Look it up in our document
nsCOMPtr<nsIDOMElement> commandElt;
domDoc->GetElementById(command, getter_AddRefs(commandElt));
nsCOMPtr<nsIContent> commandContent(do_QueryInterface(commandElt));
if (commandContent) {
nsAutoString commandDisabled, menuDisabled;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, commandDisabled);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, menuDisabled);
if (!commandDisabled.Equals(menuDisabled)) {
// The menu's disabled state needs to be updated to match the command.
if (commandDisabled.IsEmpty())
grandChild->UnsetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, PR_TRUE);
else
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::disabled, commandDisabled, PR_TRUE);
}
// The menu's value and checked states need to be updated to match the command.
// Note that (unlike the disabled state) if the command has *no* value for either, we
// assume the menu is supplying its own.
nsAutoString commandChecked, menuChecked;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, commandChecked);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, menuChecked);
if (!commandChecked.Equals(menuChecked)) {
if (!commandChecked.IsEmpty())
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::checked, commandChecked, PR_TRUE);
}
nsAutoString commandValue, menuValue;
commandContent->GetAttr(kNameSpaceID_None, nsWidgetAtoms::label, commandValue);
grandChild->GetAttr(kNameSpaceID_None, nsWidgetAtoms::label, menuValue);
if (!commandValue.Equals(menuValue)) {
if (!commandValue.IsEmpty())
grandChild->SetAttr(kNameSpaceID_None, nsWidgetAtoms::label, commandValue, PR_TRUE);
}
}
}
}
}
return PR_TRUE;
}