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nsMenuItemX.mm
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nsMenuItemX.mm
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Josh Aas <josh@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsMenuItemX.h"
#include "nsMenuBarX.h"
#include "nsMenuX.h"
#include "nsMenuItemIconX.h"
#include "nsMenuUtilsX.h"
#include "nsObjCExceptions.h"
#include "nsCOMPtr.h"
#include "nsGkAtoms.h"
#include "nsGUIEvent.h"
#include "mozilla/dom/Element.h"
#include "nsIWidget.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIPrivateDOMEvent.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMElement.h"
nsMenuItemX::nsMenuItemX()
{
mType = eRegularMenuItemType;
mNativeMenuItem = nil;
mMenuParent = nsnull;
mMenuGroupOwner = nsnull;
mIsChecked = false;
MOZ_COUNT_CTOR(nsMenuItemX);
}
nsMenuItemX::~nsMenuItemX()
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
// Prevent the icon object from outliving us.
if (mIcon)
mIcon->Destroy();
// autorelease the native menu item so that anything else happening to this
// object happens before the native menu item actually dies
[mNativeMenuItem autorelease];
if (mContent)
mMenuGroupOwner->UnregisterForContentChanges(mContent);
if (mCommandContent)
mMenuGroupOwner->UnregisterForContentChanges(mCommandContent);
MOZ_COUNT_DTOR(nsMenuItemX);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
nsresult nsMenuItemX::Create(nsMenuX* aParent, const nsString& aLabel, EMenuItemType aItemType,
nsMenuGroupOwnerX* aMenuGroupOwner, nsIContent* aNode)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
mType = aItemType;
mMenuParent = aParent;
mContent = aNode;
mMenuGroupOwner = aMenuGroupOwner;
NS_ASSERTION(mMenuGroupOwner, "No menu owner given, must have one!");
mMenuGroupOwner->RegisterForContentChanges(mContent, this);
nsIDocument *doc = mContent->GetCurrentDoc();
// if we have a command associated with this menu item, register for changes
// to the command DOM node
if (doc) {
nsAutoString ourCommand;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::command, ourCommand);
if (!ourCommand.IsEmpty()) {
nsIContent *commandElement = doc->GetElementById(ourCommand);
if (commandElement) {
mCommandContent = commandElement;
// register to observe the command DOM element
mMenuGroupOwner->RegisterForContentChanges(mCommandContent, this);
}
}
}
// decide enabled state based on command content if it exists, otherwise do it based
// on our own content
bool isEnabled;
if (mCommandContent)
isEnabled = !mCommandContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters);
else
isEnabled = !mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters);
// set up the native menu item
if (mType == eSeparatorMenuItemType) {
mNativeMenuItem = [[NSMenuItem separatorItem] retain];
}
else {
NSString *newCocoaLabelString = nsMenuUtilsX::GetTruncatedCocoaLabel(aLabel);
mNativeMenuItem = [[NSMenuItem alloc] initWithTitle:newCocoaLabelString action:nil keyEquivalent:@""];
[mNativeMenuItem setEnabled:(BOOL)isEnabled];
SetChecked(mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::checked,
nsGkAtoms::_true, eCaseMatters));
SetKeyEquiv();
}
mIcon = new nsMenuItemIconX(this, mContent, mNativeMenuItem);
if (!mIcon)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
nsresult nsMenuItemX::SetChecked(bool aIsChecked)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
mIsChecked = aIsChecked;
// update the content model. This will also handle unchecking our siblings
// if we are a radiomenu
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::checked,
mIsChecked ? NS_LITERAL_STRING("true") : NS_LITERAL_STRING("false"), true);
// update native menu item
if (mIsChecked)
[mNativeMenuItem setState:NSOnState];
else
[mNativeMenuItem setState:NSOffState];
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
EMenuItemType nsMenuItemX::GetMenuItemType()
{
return mType;
}
// Executes the "cached" javaScript command.
// Returns NS_OK if the command was executed properly, otherwise an error code.
void nsMenuItemX::DoCommand()
{
// flip "checked" state if we're a checkbox menu, or an un-checked radio menu
if (mType == eCheckboxMenuItemType ||
(mType == eRadioMenuItemType && !mIsChecked)) {
if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::autocheck,
nsGkAtoms::_false, eCaseMatters))
SetChecked(!mIsChecked);
/* the AttributeChanged code will update all the internal state */
}
nsMenuUtilsX::DispatchCommandTo(mContent);
}
nsresult nsMenuItemX::DispatchDOMEvent(const nsString &eventName, bool *preventDefaultCalled)
{
if (!mContent)
return NS_ERROR_FAILURE;
// get owner document for content
nsCOMPtr<nsIDocument> parentDoc = mContent->OwnerDoc();
// get interface for creating DOM events from content owner document
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(parentDoc);
if (!domDoc) {
NS_WARNING("Failed to QI parent nsIDocument to nsIDOMDocument");
return NS_ERROR_FAILURE;
}
// create DOM event
nsCOMPtr<nsIDOMEvent> event;
nsresult rv = domDoc->CreateEvent(NS_LITERAL_STRING("Events"), getter_AddRefs(event));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to create nsIDOMEvent");
return rv;
}
event->InitEvent(eventName, true, true);
// mark DOM event as trusted
nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(event));
privateEvent->SetTrusted(true);
// send DOM event
nsCOMPtr<nsIDOMEventTarget> eventTarget = do_QueryInterface(mContent);
rv = eventTarget->DispatchEvent(event, preventDefaultCalled);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to send DOM event via nsIDOMEventTarget");
return rv;
}
return NS_OK;
}
// Walk the sibling list looking for nodes with the same name and
// uncheck them all.
void nsMenuItemX::UncheckRadioSiblings(nsIContent* inCheckedContent)
{
nsAutoString myGroupName;
inCheckedContent->GetAttr(kNameSpaceID_None, nsGkAtoms::name, myGroupName);
if (!myGroupName.Length()) // no groupname, nothing to do
return;
nsCOMPtr<nsIContent> parent = inCheckedContent->GetParent();
if (!parent)
return;
// loop over siblings
PRUint32 count = parent->GetChildCount();
for (PRUint32 i = 0; i < count; i++) {
nsIContent *sibling = parent->GetChildAt(i);
if (sibling) {
if (sibling != inCheckedContent) { // skip this node
// if the current sibling is in the same group, clear it
if (sibling->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
myGroupName, eCaseMatters))
sibling->SetAttr(kNameSpaceID_None, nsGkAtoms::checked, NS_LITERAL_STRING("false"), true);
}
}
}
}
void nsMenuItemX::SetKeyEquiv()
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
// Set key shortcut and modifiers
nsAutoString keyValue;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::key, keyValue);
if (!keyValue.IsEmpty() && mContent->GetCurrentDoc()) {
nsIContent *keyContent = mContent->GetCurrentDoc()->GetElementById(keyValue);
if (keyContent) {
nsAutoString keyChar(NS_LITERAL_STRING(" "));
keyContent->GetAttr(kNameSpaceID_None, nsGkAtoms::key, keyChar);
nsAutoString modifiersStr;
keyContent->GetAttr(kNameSpaceID_None, nsGkAtoms::modifiers, modifiersStr);
PRUint8 modifiers = nsMenuUtilsX::GeckoModifiersForNodeAttribute(modifiersStr);
unsigned int macModifiers = nsMenuUtilsX::MacModifiersForGeckoModifiers(modifiers);
[mNativeMenuItem setKeyEquivalentModifierMask:macModifiers];
NSString *keyEquivalent = [[NSString stringWithCharacters:(unichar*)keyChar.get()
length:keyChar.Length()] lowercaseString];
if ([keyEquivalent isEqualToString:@" "])
[mNativeMenuItem setKeyEquivalent:@""];
else
[mNativeMenuItem setKeyEquivalent:keyEquivalent];
return;
}
}
// if the key was removed, clear the key
[mNativeMenuItem setKeyEquivalent:@""];
NS_OBJC_END_TRY_ABORT_BLOCK;
}
//
// nsChangeObserver
//
void
nsMenuItemX::ObserveAttributeChanged(nsIDocument *aDocument, nsIContent *aContent, nsIAtom *aAttribute)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
if (!aContent)
return;
if (aContent == mContent) { // our own content node changed
if (aAttribute == nsGkAtoms::checked) {
// if we're a radio menu, uncheck our sibling radio items. No need to
// do any of this if we're just a normal check menu.
if (mType == eRadioMenuItemType) {
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::checked,
nsGkAtoms::_true, eCaseMatters))
UncheckRadioSiblings(mContent);
}
mMenuParent->SetRebuild(true);
}
else if (aAttribute == nsGkAtoms::hidden ||
aAttribute == nsGkAtoms::collapsed ||
aAttribute == nsGkAtoms::label) {
mMenuParent->SetRebuild(true);
}
else if (aAttribute == nsGkAtoms::key) {
SetKeyEquiv();
}
else if (aAttribute == nsGkAtoms::image) {
SetupIcon();
}
else if (aAttribute == nsGkAtoms::disabled) {
if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters))
[mNativeMenuItem setEnabled:NO];
else
[mNativeMenuItem setEnabled:YES];
}
}
else if (aContent == mCommandContent) {
// the only thing that really matters when the menu isn't showing is the
// enabled state since it enables/disables keyboard commands
if (aAttribute == nsGkAtoms::disabled) {
// first we sync our menu item DOM node with the command DOM node
nsAutoString commandDisabled;
nsAutoString menuDisabled;
aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::disabled, commandDisabled);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::disabled, menuDisabled);
if (!commandDisabled.Equals(menuDisabled)) {
// The menu's disabled state needs to be updated to match the command.
if (commandDisabled.IsEmpty())
mContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
else
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, commandDisabled, true);
}
// now we sync our native menu item with the command DOM node
if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters))
[mNativeMenuItem setEnabled:NO];
else
[mNativeMenuItem setEnabled:YES];
}
}
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void nsMenuItemX::ObserveContentRemoved(nsIDocument *aDocument, nsIContent *aChild, PRInt32 aIndexInContainer)
{
if (aChild == mCommandContent) {
mMenuGroupOwner->UnregisterForContentChanges(mCommandContent);
mCommandContent = nsnull;
}
mMenuParent->SetRebuild(true);
}
void nsMenuItemX::ObserveContentInserted(nsIDocument *aDocument, nsIContent* aContainer,
nsIContent *aChild)
{
mMenuParent->SetRebuild(true);
}
void nsMenuItemX::SetupIcon()
{
if (mIcon)
mIcon->SetupIcon();
}