mirror of
https://github.com/mozilla/gecko-dev.git
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370 lines
12 KiB
Plaintext
370 lines
12 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMenuItemX.h"
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#include "nsMenuBarX.h"
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#include "nsMenuX.h"
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#include "nsMenuItemIconX.h"
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#include "nsMenuUtilsX.h"
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#include "nsCocoaUtils.h"
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#include "nsObjCExceptions.h"
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#include "nsCOMPtr.h"
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#include "nsGkAtoms.h"
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#include "mozilla/dom/Element.h"
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#include "nsIWidget.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMEvent.h"
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nsMenuItemX::nsMenuItemX()
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{
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mType = eRegularMenuItemType;
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mNativeMenuItem = nil;
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mMenuParent = nullptr;
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mMenuGroupOwner = nullptr;
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mIsChecked = false;
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MOZ_COUNT_CTOR(nsMenuItemX);
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}
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nsMenuItemX::~nsMenuItemX()
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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// Prevent the icon object from outliving us.
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if (mIcon)
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mIcon->Destroy();
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// autorelease the native menu item so that anything else happening to this
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// object happens before the native menu item actually dies
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[mNativeMenuItem autorelease];
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if (mContent)
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mMenuGroupOwner->UnregisterForContentChanges(mContent);
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if (mCommandContent)
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mMenuGroupOwner->UnregisterForContentChanges(mCommandContent);
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MOZ_COUNT_DTOR(nsMenuItemX);
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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nsresult nsMenuItemX::Create(nsMenuX* aParent, const nsString& aLabel, EMenuItemType aItemType,
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nsMenuGroupOwnerX* aMenuGroupOwner, nsIContent* aNode)
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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mType = aItemType;
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mMenuParent = aParent;
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mContent = aNode;
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mMenuGroupOwner = aMenuGroupOwner;
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NS_ASSERTION(mMenuGroupOwner, "No menu owner given, must have one!");
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mMenuGroupOwner->RegisterForContentChanges(mContent, this);
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nsIDocument *doc = mContent->GetCurrentDoc();
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// if we have a command associated with this menu item, register for changes
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// to the command DOM node
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if (doc) {
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nsAutoString ourCommand;
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mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::command, ourCommand);
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if (!ourCommand.IsEmpty()) {
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nsIContent *commandElement = doc->GetElementById(ourCommand);
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if (commandElement) {
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mCommandContent = commandElement;
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// register to observe the command DOM element
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mMenuGroupOwner->RegisterForContentChanges(mCommandContent, this);
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}
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}
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}
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// decide enabled state based on command content if it exists, otherwise do it based
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// on our own content
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bool isEnabled;
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if (mCommandContent)
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isEnabled = !mCommandContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters);
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else
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isEnabled = !mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters);
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// set up the native menu item
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if (mType == eSeparatorMenuItemType) {
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mNativeMenuItem = [[NSMenuItem separatorItem] retain];
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}
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else {
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NSString *newCocoaLabelString = nsMenuUtilsX::GetTruncatedCocoaLabel(aLabel);
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mNativeMenuItem = [[NSMenuItem alloc] initWithTitle:newCocoaLabelString action:nil keyEquivalent:@""];
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[mNativeMenuItem setEnabled:(BOOL)isEnabled];
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SetChecked(mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::checked,
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nsGkAtoms::_true, eCaseMatters));
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SetKeyEquiv();
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}
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mIcon = new nsMenuItemIconX(this, mContent, mNativeMenuItem);
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if (!mIcon)
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return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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nsresult nsMenuItemX::SetChecked(bool aIsChecked)
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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mIsChecked = aIsChecked;
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// update the content model. This will also handle unchecking our siblings
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// if we are a radiomenu
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mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::checked,
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mIsChecked ? NS_LITERAL_STRING("true") : NS_LITERAL_STRING("false"), true);
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// update native menu item
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if (mIsChecked)
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[mNativeMenuItem setState:NSOnState];
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else
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[mNativeMenuItem setState:NSOffState];
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return NS_OK;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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EMenuItemType nsMenuItemX::GetMenuItemType()
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{
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return mType;
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}
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// Executes the "cached" javaScript command.
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// Returns NS_OK if the command was executed properly, otherwise an error code.
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void nsMenuItemX::DoCommand()
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{
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// flip "checked" state if we're a checkbox menu, or an un-checked radio menu
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if (mType == eCheckboxMenuItemType ||
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(mType == eRadioMenuItemType && !mIsChecked)) {
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if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::autocheck,
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nsGkAtoms::_false, eCaseMatters))
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SetChecked(!mIsChecked);
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/* the AttributeChanged code will update all the internal state */
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}
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nsMenuUtilsX::DispatchCommandTo(mContent);
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}
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nsresult nsMenuItemX::DispatchDOMEvent(const nsString &eventName, bool *preventDefaultCalled)
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{
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if (!mContent)
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return NS_ERROR_FAILURE;
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// get owner document for content
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nsCOMPtr<nsIDocument> parentDoc = mContent->OwnerDoc();
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// get interface for creating DOM events from content owner document
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nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(parentDoc);
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if (!domDoc) {
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NS_WARNING("Failed to QI parent nsIDocument to nsIDOMDocument");
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return NS_ERROR_FAILURE;
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}
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// create DOM event
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nsCOMPtr<nsIDOMEvent> event;
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nsresult rv = domDoc->CreateEvent(NS_LITERAL_STRING("Events"), getter_AddRefs(event));
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to create nsIDOMEvent");
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return rv;
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}
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event->InitEvent(eventName, true, true);
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// mark DOM event as trusted
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event->SetTrusted(true);
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// send DOM event
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rv = mContent->DispatchEvent(event, preventDefaultCalled);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to send DOM event via EventTarget");
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return rv;
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}
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return NS_OK;
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}
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// Walk the sibling list looking for nodes with the same name and
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// uncheck them all.
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void nsMenuItemX::UncheckRadioSiblings(nsIContent* inCheckedContent)
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{
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nsAutoString myGroupName;
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inCheckedContent->GetAttr(kNameSpaceID_None, nsGkAtoms::name, myGroupName);
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if (!myGroupName.Length()) // no groupname, nothing to do
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return;
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nsCOMPtr<nsIContent> parent = inCheckedContent->GetParent();
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if (!parent)
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return;
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// loop over siblings
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uint32_t count = parent->GetChildCount();
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for (uint32_t i = 0; i < count; i++) {
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nsIContent *sibling = parent->GetChildAt(i);
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if (sibling) {
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if (sibling != inCheckedContent) { // skip this node
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// if the current sibling is in the same group, clear it
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if (sibling->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
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myGroupName, eCaseMatters))
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sibling->SetAttr(kNameSpaceID_None, nsGkAtoms::checked, NS_LITERAL_STRING("false"), true);
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}
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}
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}
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}
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void nsMenuItemX::SetKeyEquiv()
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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// Set key shortcut and modifiers
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nsAutoString keyValue;
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mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::key, keyValue);
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if (!keyValue.IsEmpty() && mContent->GetCurrentDoc()) {
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nsIContent *keyContent = mContent->GetCurrentDoc()->GetElementById(keyValue);
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if (keyContent) {
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nsAutoString keyChar;
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bool hasKey = keyContent->GetAttr(kNameSpaceID_None, nsGkAtoms::key, keyChar);
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if (!hasKey || keyChar.IsEmpty()) {
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nsAutoString keyCodeName;
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keyContent->GetAttr(kNameSpaceID_None, nsGkAtoms::keycode, keyCodeName);
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uint32_t charCode =
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nsCocoaUtils::ConvertGeckoNameToMacCharCode(keyCodeName);
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if (charCode) {
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keyChar.Assign(charCode);
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}
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else {
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keyChar.Assign(NS_LITERAL_STRING(" "));
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}
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}
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nsAutoString modifiersStr;
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keyContent->GetAttr(kNameSpaceID_None, nsGkAtoms::modifiers, modifiersStr);
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uint8_t modifiers = nsMenuUtilsX::GeckoModifiersForNodeAttribute(modifiersStr);
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unsigned int macModifiers = nsMenuUtilsX::MacModifiersForGeckoModifiers(modifiers);
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[mNativeMenuItem setKeyEquivalentModifierMask:macModifiers];
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NSString *keyEquivalent = [[NSString stringWithCharacters:(unichar*)keyChar.get()
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length:keyChar.Length()] lowercaseString];
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if ([keyEquivalent isEqualToString:@" "])
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[mNativeMenuItem setKeyEquivalent:@""];
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else
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[mNativeMenuItem setKeyEquivalent:keyEquivalent];
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return;
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}
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}
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// if the key was removed, clear the key
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[mNativeMenuItem setKeyEquivalent:@""];
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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//
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// nsChangeObserver
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//
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void
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nsMenuItemX::ObserveAttributeChanged(nsIDocument *aDocument, nsIContent *aContent, nsIAtom *aAttribute)
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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if (!aContent)
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return;
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if (aContent == mContent) { // our own content node changed
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if (aAttribute == nsGkAtoms::checked) {
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// if we're a radio menu, uncheck our sibling radio items. No need to
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// do any of this if we're just a normal check menu.
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if (mType == eRadioMenuItemType) {
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if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::checked,
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nsGkAtoms::_true, eCaseMatters))
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UncheckRadioSiblings(mContent);
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}
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mMenuParent->SetRebuild(true);
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}
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else if (aAttribute == nsGkAtoms::hidden ||
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aAttribute == nsGkAtoms::collapsed ||
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aAttribute == nsGkAtoms::label) {
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mMenuParent->SetRebuild(true);
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}
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else if (aAttribute == nsGkAtoms::key) {
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SetKeyEquiv();
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}
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else if (aAttribute == nsGkAtoms::image) {
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SetupIcon();
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}
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else if (aAttribute == nsGkAtoms::disabled) {
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if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters))
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[mNativeMenuItem setEnabled:NO];
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else
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[mNativeMenuItem setEnabled:YES];
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}
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}
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else if (aContent == mCommandContent) {
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// the only thing that really matters when the menu isn't showing is the
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// enabled state since it enables/disables keyboard commands
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if (aAttribute == nsGkAtoms::disabled) {
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// first we sync our menu item DOM node with the command DOM node
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nsAutoString commandDisabled;
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nsAutoString menuDisabled;
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aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::disabled, commandDisabled);
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mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::disabled, menuDisabled);
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if (!commandDisabled.Equals(menuDisabled)) {
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// The menu's disabled state needs to be updated to match the command.
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if (commandDisabled.IsEmpty())
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mContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
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else
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mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, commandDisabled, true);
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}
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// now we sync our native menu item with the command DOM node
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if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled, nsGkAtoms::_true, eCaseMatters))
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[mNativeMenuItem setEnabled:NO];
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else
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[mNativeMenuItem setEnabled:YES];
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}
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}
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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void nsMenuItemX::ObserveContentRemoved(nsIDocument *aDocument, nsIContent *aChild, int32_t aIndexInContainer)
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{
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if (aChild == mCommandContent) {
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mMenuGroupOwner->UnregisterForContentChanges(mCommandContent);
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mCommandContent = nullptr;
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}
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mMenuParent->SetRebuild(true);
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}
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void nsMenuItemX::ObserveContentInserted(nsIDocument *aDocument, nsIContent* aContainer,
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nsIContent *aChild)
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{
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mMenuParent->SetRebuild(true);
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}
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void nsMenuItemX::SetupIcon()
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{
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if (mIcon)
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mIcon->SetupIcon();
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}
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