542 lines
14 KiB
C++
542 lines
14 KiB
C++
/* 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 "mozilla/Assertions.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/Move.h"
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#include "mozilla/Preferences.h"
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#include "nsAutoPtr.h"
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#include "nsContentUtils.h"
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#include "nsIDocument.h"
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#include "nsIDOMEvent.h"
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#include "nsIDOMEventListener.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIRunnable.h"
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#include "nsIWidget.h"
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#include "nsTArray.h"
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#include "nsUnicharUtils.h"
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#include "nsMenu.h"
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#include "nsNativeMenuAtoms.h"
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#include "nsNativeMenuService.h"
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <glib.h>
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#include <glib-object.h>
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#include "nsMenuBar.h"
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using namespace mozilla;
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static bool
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ShouldHandleKeyEvent(nsIDOMEvent* aEvent) {
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bool handled, trusted = false;
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aEvent->GetPreventDefault(&handled);
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aEvent->GetIsTrusted(&trusted);
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if (handled || !trusted) {
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return false;
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}
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return true;
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}
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class nsMenuBarContentInsertedEvent : public Runnable {
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public:
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nsMenuBarContentInsertedEvent(nsMenuBar* aMenuBar,
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nsIContent* aChild,
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nsIContent* aPrevSibling) :
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mWeakMenuBar(aMenuBar),
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mChild(aChild),
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mPrevSibling(aPrevSibling) { }
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NS_IMETHODIMP Run()
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{
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if (!mWeakMenuBar) {
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return NS_OK;
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}
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static_cast<nsMenuBar* >(mWeakMenuBar.get())->HandleContentInserted(mChild,
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mPrevSibling);
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return NS_OK;
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}
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private:
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nsWeakMenuObject mWeakMenuBar;
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nsCOMPtr<nsIContent> mChild;
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nsCOMPtr<nsIContent> mPrevSibling;
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};
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class nsMenuBarContentRemovedEvent : public Runnable {
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public:
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nsMenuBarContentRemovedEvent(nsMenuBar* aMenuBar,
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nsIContent* aChild) :
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mWeakMenuBar(aMenuBar),
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mChild(aChild) { }
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NS_IMETHODIMP Run()
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{
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if (!mWeakMenuBar) {
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return NS_OK;
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}
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static_cast<nsMenuBar* >(mWeakMenuBar.get())->HandleContentRemoved(mChild);
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return NS_OK;
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}
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private:
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nsWeakMenuObject mWeakMenuBar;
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nsCOMPtr<nsIContent> mChild;
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};
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class nsMenuBar::DocEventListener final : public nsIDOMEventListener {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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DocEventListener(nsMenuBar* aOwner) : mOwner(aOwner) { };
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private:
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~DocEventListener() { };
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nsMenuBar* mOwner;
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};
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NS_IMPL_ISUPPORTS(nsMenuBar::DocEventListener, nsIDOMEventListener)
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NS_IMETHODIMP
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nsMenuBar::DocEventListener::HandleEvent(nsIDOMEvent* aEvent) {
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nsAutoString type;
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nsresult rv = aEvent->GetType(type);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to determine event type");
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return rv;
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}
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if (type.Equals(NS_LITERAL_STRING("focus"))) {
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mOwner->Focus();
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} else if (type.Equals(NS_LITERAL_STRING("blur"))) {
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mOwner->Blur();
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} else if (type.Equals(NS_LITERAL_STRING("keypress"))) {
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rv = mOwner->Keypress(aEvent);
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} else if (type.Equals(NS_LITERAL_STRING("keydown"))) {
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rv = mOwner->KeyDown(aEvent);
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} else if (type.Equals(NS_LITERAL_STRING("keyup"))) {
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rv = mOwner->KeyUp(aEvent);
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}
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return rv;
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}
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nsMenuBar::nsMenuBar(nsIContent* aMenuBarNode) :
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nsMenuContainer(new nsNativeMenuDocListener(aMenuBarNode), aMenuBarNode),
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mTopLevel(nullptr),
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mServer(nullptr),
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mIsActive(false) {
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MOZ_COUNT_CTOR(nsMenuBar);
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}
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nsresult
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nsMenuBar::Init(nsIWidget* aParent) {
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MOZ_ASSERT(aParent);
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GdkWindow* gdkWin = static_cast<GdkWindow* >(
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aParent->GetNativeData(NS_NATIVE_WINDOW));
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if (!gdkWin) {
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return NS_ERROR_FAILURE;
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}
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gpointer user_data = nullptr;
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gdk_window_get_user_data(gdkWin, &user_data);
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if (!user_data || !GTK_IS_CONTAINER(user_data)) {
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return NS_ERROR_FAILURE;
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}
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mTopLevel = gtk_widget_get_toplevel(GTK_WIDGET(user_data));
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if (!mTopLevel) {
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return NS_ERROR_FAILURE;
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}
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g_object_ref(mTopLevel);
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nsAutoCString path;
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path.Append(NS_LITERAL_CSTRING("/com/canonical/menu/"));
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char xid[10];
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sprintf(xid, "%X", static_cast<uint32_t>(
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GDK_WINDOW_XID(gtk_widget_get_window(mTopLevel))));
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path.Append(xid);
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mServer = dbusmenu_server_new(path.get());
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if (!mServer) {
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return NS_ERROR_FAILURE;
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}
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CreateNativeData();
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if (!GetNativeData()) {
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return NS_ERROR_FAILURE;
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}
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dbusmenu_server_set_root(mServer, GetNativeData());
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mEventListener = new DocEventListener(this);
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mDocument = do_QueryInterface(ContentNode()->OwnerDoc());
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mAccessKey = Preferences::GetInt("ui.key.menuAccessKey");
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if (mAccessKey == nsIDOMKeyEvent::DOM_VK_SHIFT) {
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mAccessKeyMask = eModifierShift;
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} else if (mAccessKey == nsIDOMKeyEvent::DOM_VK_CONTROL) {
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mAccessKeyMask = eModifierCtrl;
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} else if (mAccessKey == nsIDOMKeyEvent::DOM_VK_ALT) {
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mAccessKeyMask = eModifierAlt;
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} else if (mAccessKey == nsIDOMKeyEvent::DOM_VK_META) {
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mAccessKeyMask = eModifierMeta;
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} else {
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mAccessKeyMask = eModifierAlt;
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}
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return NS_OK;
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}
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void
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nsMenuBar::Build() {
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uint32_t count = ContentNode()->GetChildCount();
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for (uint32_t i = 0; i < count; ++i) {
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nsIContent* childContent = ContentNode()->GetChildAt(i);
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UniquePtr<nsMenuObject> child = CreateChild(childContent);
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if (!child) {
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continue;
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}
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AppendChild(Move(child));
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}
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}
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void
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nsMenuBar::DisconnectDocumentEventListeners() {
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mDocument->RemoveEventListener(NS_LITERAL_STRING("focus"),
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mEventListener,
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true);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("blur"),
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mEventListener,
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true);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("keypress"),
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mEventListener,
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false);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("keydown"),
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mEventListener,
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false);
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mDocument->RemoveEventListener(NS_LITERAL_STRING("keyup"),
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mEventListener,
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false);
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}
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void
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nsMenuBar::SetShellShowingMenuBar(bool aShowing) {
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ContentNode()->OwnerDoc()->GetRootElement()->SetAttr(
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kNameSpaceID_None, nsNativeMenuAtoms::shellshowingmenubar,
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aShowing ? NS_LITERAL_STRING("true") : NS_LITERAL_STRING("false"),
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true);
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}
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void
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nsMenuBar::Focus() {
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ContentNode()->SetAttr(kNameSpaceID_None, nsNativeMenuAtoms::openedwithkey,
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NS_LITERAL_STRING("false"), true);
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}
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void
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nsMenuBar::Blur() {
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// We do this here in case we lose focus before getting the
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// keyup event, which leaves the menubar state looking like
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// the alt key is stuck down
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dbusmenu_server_set_status(mServer, DBUSMENU_STATUS_NORMAL);
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}
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nsMenuBar::ModifierFlags
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nsMenuBar::GetModifiersFromEvent(nsIDOMKeyEvent* aEvent) {
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ModifierFlags modifiers = static_cast<ModifierFlags>(0);
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bool modifier;
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aEvent->GetAltKey(&modifier);
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if (modifier) {
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modifiers = static_cast<ModifierFlags>(modifiers | eModifierAlt);
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}
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aEvent->GetShiftKey(&modifier);
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if (modifier) {
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modifiers = static_cast<ModifierFlags>(modifiers | eModifierShift);
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}
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aEvent->GetCtrlKey(&modifier);
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if (modifier) {
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modifiers = static_cast<ModifierFlags>(modifiers | eModifierCtrl);
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}
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aEvent->GetMetaKey(&modifier);
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if (modifier) {
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modifiers = static_cast<ModifierFlags>(modifiers | eModifierMeta);
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}
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return modifiers;
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}
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nsresult
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nsMenuBar::Keypress(nsIDOMEvent* aEvent) {
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if (!ShouldHandleKeyEvent(aEvent)) {
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return NS_OK;
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}
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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if (!keyEvent) {
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return NS_OK;
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}
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ModifierFlags modifiers = GetModifiersFromEvent(keyEvent);
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if (((modifiers & mAccessKeyMask) == 0) ||
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((modifiers & ~mAccessKeyMask) != 0)) {
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return NS_OK;
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}
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uint32_t charCode;
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keyEvent->GetCharCode(&charCode);
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if (charCode == 0) {
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return NS_OK;
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}
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char16_t ch = char16_t(charCode);
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char16_t chl = ToLowerCase(ch);
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char16_t chu = ToUpperCase(ch);
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nsMenuObject* found = nullptr;
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uint32_t count = ChildCount();
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for (uint32_t i = 0; i < count; ++i) {
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nsAutoString accesskey;
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ChildAt(i)->ContentNode()->GetAttr(kNameSpaceID_None,
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nsGkAtoms::accesskey,
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accesskey);
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const nsAutoString::char_type* key = accesskey.BeginReading();
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if (*key == chu ||* key == chl) {
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found = ChildAt(i);
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break;
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}
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}
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if (!found || found->Type() != nsMenuObject::eType_Menu) {
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return NS_OK;
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}
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ContentNode()->SetAttr(kNameSpaceID_None, nsNativeMenuAtoms::openedwithkey,
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NS_LITERAL_STRING("true"), true);
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static_cast<nsMenu* >(found)->OpenMenu();
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aEvent->StopPropagation();
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aEvent->PreventDefault();
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return NS_OK;
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}
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nsresult
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nsMenuBar::KeyDown(nsIDOMEvent* aEvent) {
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if (!ShouldHandleKeyEvent(aEvent)) {
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return NS_OK;
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}
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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if (!keyEvent) {
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return NS_OK;
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}
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uint32_t keyCode;
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keyEvent->GetKeyCode(&keyCode);
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ModifierFlags modifiers = GetModifiersFromEvent(keyEvent);
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if ((keyCode != mAccessKey) || ((modifiers & ~mAccessKeyMask) != 0)) {
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return NS_OK;
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}
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dbusmenu_server_set_status(mServer, DBUSMENU_STATUS_NOTICE);
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return NS_OK;
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}
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nsresult
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nsMenuBar::KeyUp(nsIDOMEvent* aEvent) {
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if (!ShouldHandleKeyEvent(aEvent)) {
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return NS_OK;
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}
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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if (!keyEvent) {
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return NS_OK;
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}
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uint32_t keyCode;
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keyEvent->GetKeyCode(&keyCode);
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if (keyCode == mAccessKey) {
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dbusmenu_server_set_status(mServer, DBUSMENU_STATUS_NORMAL);
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}
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return NS_OK;
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}
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void
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nsMenuBar::HandleContentInserted(nsIContent* aChild, nsIContent* aPrevSibling) {
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UniquePtr<nsMenuObject> child = CreateChild(aChild);
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if (!child) {
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return;
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}
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InsertChildAfter(Move(child), aPrevSibling);
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}
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void
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nsMenuBar::HandleContentRemoved(nsIContent* aChild) {
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RemoveChild(aChild);
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}
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void
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nsMenuBar::OnContentInserted(nsIContent* aContainer, nsIContent* aChild,
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nsIContent* aPrevSibling) {
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MOZ_ASSERT(aContainer == ContentNode(),
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"Received an event that wasn't meant for us");
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nsContentUtils::AddScriptRunner(
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new nsMenuBarContentInsertedEvent(this, aChild, aPrevSibling));
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}
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void
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nsMenuBar::OnContentRemoved(nsIContent* aContainer, nsIContent* aChild) {
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MOZ_ASSERT(aContainer == ContentNode(),
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"Received an event that wasn't meant for us");
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nsContentUtils::AddScriptRunner(
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new nsMenuBarContentRemovedEvent(this, aChild));
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}
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nsMenuBar::~nsMenuBar() {
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nsNativeMenuService* service = nsNativeMenuService::GetSingleton();
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if (service) {
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service->NotifyNativeMenuBarDestroyed(this);
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}
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if (ContentNode()) {
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SetShellShowingMenuBar(false);
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}
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// We want to destroy all children before dropping our reference
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// to the doc listener
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while (ChildCount() > 0) {
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RemoveChildAt(0);
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}
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if (mTopLevel) {
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g_object_unref(mTopLevel);
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}
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if (DocListener()) {
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DocListener()->Stop();
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}
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if (mDocument) {
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DisconnectDocumentEventListeners();
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}
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if (mServer) {
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g_object_unref(mServer);
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}
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MOZ_COUNT_DTOR(nsMenuBar);
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}
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/* static */ UniquePtr<nsMenuBar>
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nsMenuBar::Create(nsIWidget* aParent, nsIContent* aMenuBarNode) {
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UniquePtr<nsMenuBar> menubar(new nsMenuBar(aMenuBarNode));
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if (NS_FAILED(menubar->Init(aParent))) {
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return nullptr;
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}
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return Move(menubar);
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}
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nsMenuObject::EType
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nsMenuBar::Type() const {
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return eType_MenuBar;
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}
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bool
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nsMenuBar::IsBeingDisplayed() const {
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return true;
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}
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uint32_t
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nsMenuBar::WindowId() const {
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return static_cast<uint32_t>(GDK_WINDOW_XID(gtk_widget_get_window(mTopLevel)));
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}
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nsAdoptingCString
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nsMenuBar::ObjectPath() const {
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gchar* tmp;
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g_object_get(mServer, DBUSMENU_SERVER_PROP_DBUS_OBJECT, &tmp, NULL);
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nsAdoptingCString result(tmp);
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return result;
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}
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void
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nsMenuBar::Activate() {
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if (mIsActive) {
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return;
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}
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mIsActive = true;
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mDocument->AddEventListener(NS_LITERAL_STRING("focus"),
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mEventListener,
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true);
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mDocument->AddEventListener(NS_LITERAL_STRING("blur"),
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mEventListener,
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true);
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mDocument->AddEventListener(NS_LITERAL_STRING("keypress"),
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mEventListener,
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false);
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mDocument->AddEventListener(NS_LITERAL_STRING("keydown"),
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mEventListener,
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false);
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mDocument->AddEventListener(NS_LITERAL_STRING("keyup"),
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mEventListener,
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false);
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// Clear this. Not sure if we really need to though
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ContentNode()->SetAttr(kNameSpaceID_None, nsNativeMenuAtoms::openedwithkey,
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NS_LITERAL_STRING("false"), true);
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DocListener()->Start();
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Build();
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SetShellShowingMenuBar(true);
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}
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void
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nsMenuBar::Deactivate() {
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if (!mIsActive) {
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return;
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}
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mIsActive = false;
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SetShellShowingMenuBar(false);
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while (ChildCount() > 0) {
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RemoveChildAt(0);
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}
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DocListener()->Stop();
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DisconnectDocumentEventListeners();
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}
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