Bug 1895229 - Remove nsIWebBrowserChromeFocus. r=hsivonen,dom-core

It's only implemented by BrowserChild, we can do this more directly.

Differential Revision: https://phabricator.services.mozilla.com/D209534

docshell/base/nsDocShell.cpp

@@ -167,7 +167,6 @@
 #include "nsIURILoader.h"
 #include "nsIViewSourceChannel.h"
 #include "nsIWebBrowserChrome.h"
-#include "nsIWebBrowserChromeFocus.h"
 #include "nsIWebBrowserFind.h"
 #include "nsIWebProgress.h"
 #include "nsIWidget.h"
@@ -2098,27 +2097,6 @@ nsDocShell::GetBusyFlags(BusyFlags* aBusyFlags) {
   return NS_OK;
 }
 
-NS_IMETHODIMP
-nsDocShell::TabToTreeOwner(bool aForward, bool aForDocumentNavigation,
-                           bool* aTookFocus) {
-  NS_ENSURE_ARG_POINTER(aTookFocus);
-
-  nsCOMPtr<nsIWebBrowserChromeFocus> chromeFocus = do_GetInterface(mTreeOwner);
-  if (chromeFocus) {
-    if (aForward) {
-      *aTookFocus =
-          NS_SUCCEEDED(chromeFocus->FocusNextElement(aForDocumentNavigation));
-    } else {
-      *aTookFocus =
-          NS_SUCCEEDED(chromeFocus->FocusPrevElement(aForDocumentNavigation));
-    }
-  } else {
-    *aTookFocus = false;
-  }
-
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 nsDocShell::GetLoadURIDelegate(nsILoadURIDelegate** aLoadURIDelegate) {
   nsCOMPtr<nsILoadURIDelegate> delegate = GetLoadURIDelegate();

docshell/base/nsDocShellTreeOwner.cpp

@@ -39,7 +39,6 @@
 #include "nsIRemoteTab.h"
 #include "nsIBrowserChild.h"
 #include "nsRect.h"
-#include "nsIWebBrowserChromeFocus.h"
 #include "nsIContent.h"
 #include "nsServiceManagerUtils.h"
 #include "nsViewManager.h"
@@ -196,13 +195,6 @@ nsDocShellTreeOwner::GetInterface(const nsIID& aIID, void** aSink) {
     return NS_OK;
   }
 
-  if (aIID.Equals(NS_GET_IID(nsIWebBrowserChromeFocus))) {
-    if (mWebBrowserChromeWeak != nullptr) {
-      return mWebBrowserChromeWeak->QueryReferent(aIID, aSink);
-    }
-    return mOwnerWin->QueryInterface(aIID, aSink);
-  }
-
   if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
     nsCOMPtr<nsIPrompt> prompt;
     EnsurePrompter();

docshell/base/nsIDocShell.idl

@@ -271,16 +271,6 @@ interface nsIDocShell : nsIDocShellTreeItem
    */
   attribute float zoom;
 
-  /*
-   * Tells the docshell to offer focus to its tree owner.
-   * This is currently only necessary for embedding chrome.
-   * If forDocumentNavigation is true, then document navigation should be
-   * performed, where only the root of documents are selected. Otherwise, the
-   * next element in the parent should be returned. Returns true if focus was
-   * successfully taken by the tree owner.
-   */
-  boolean tabToTreeOwner(in boolean forward, in boolean forDocumentNavigation);
-
   /**
    * Current busy state for DocShell
    */

dom/base/nsFocusManager.cpp

@@ -3662,12 +3662,10 @@ nsresult nsFocusManager::DetermineElementToMoveFocus(
       }
     } else {
       if (aNavigateByKey) {
-        // There is no parent, so call the tree owner. This will tell the
-        // embedder or parent process that it should take the focus.
-        bool tookFocus;
-        docShell->TabToTreeOwner(forward, forDocumentNavigation, &tookFocus);
-        // If the tree owner took the focus, blur the current element.
-        if (tookFocus) {
+        // There is no parent, so move the focus to the parent process.
+        if (auto* child = BrowserChild::GetFrom(docShell)) {
+          child->SendMoveFocus(forward, forDocumentNavigation);
+          // Blur the current element.
           RefPtr<BrowsingContext> focusedBC = GetFocusedBrowsingContext();
           if (focusedBC && focusedBC->IsInProcess()) {
             Blur(focusedBC, nullptr, true, true, false,

dom/ipc/BrowserChild.cpp

@@ -502,7 +502,6 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BrowserChild)
   NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome)
-  NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChromeFocus)
   NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
   NS_INTERFACE_MAP_ENTRY(nsIWindowProvider)
   NS_INTERFACE_MAP_ENTRY(nsIBrowserChild)
@@ -627,18 +626,6 @@ BrowserChild::GetDimensions(DimensionKind aDimensionKind, int32_t* aX,
 NS_IMETHODIMP
 BrowserChild::Blur() { return NS_ERROR_NOT_IMPLEMENTED; }
 
-NS_IMETHODIMP
-BrowserChild::FocusNextElement(bool aForDocumentNavigation) {
-  SendMoveFocus(true, aForDocumentNavigation);
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-BrowserChild::FocusPrevElement(bool aForDocumentNavigation) {
-  SendMoveFocus(false, aForDocumentNavigation);
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 BrowserChild::GetInterface(const nsIID& aIID, void** aSink) {
   // XXXbz should we restrict the set of interfaces we hand out here?

dom/ipc/BrowserChild.h

@@ -12,7 +12,6 @@
 #include "nsIWebNavigation.h"
 #include "nsCOMPtr.h"
 #include "nsIWebBrowserChrome.h"
-#include "nsIWebBrowserChromeFocus.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsIWindowProvider.h"
 #include "nsIDocShell.h"
@@ -128,7 +127,6 @@ class BrowserChild final : public nsMessageManagerScriptExecutor,
                            public ipc::MessageManagerCallback,
                            public PBrowserChild,
                            public nsIWebBrowserChrome,
-                           public nsIWebBrowserChromeFocus,
                            public nsIInterfaceRequestor,
                            public nsIWindowProvider,
                            public nsSupportsWeakReference,
@@ -185,7 +183,6 @@ class BrowserChild final : public nsMessageManagerScriptExecutor,
 
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_NSIWEBBROWSERCHROME
-  NS_DECL_NSIWEBBROWSERCHROMEFOCUS
   NS_DECL_NSIINTERFACEREQUESTOR
   NS_DECL_NSIWINDOWPROVIDER
   NS_DECL_NSIBROWSERCHILD

toolkit/components/browser/moz.build

@@ -12,7 +12,6 @@ DIRS += ["build"]
 XPIDL_SOURCES += [
     "nsIWebBrowser.idl",
     "nsIWebBrowserChrome.idl",
-    "nsIWebBrowserChromeFocus.idl",
 ]
 
 XPIDL_SOURCES += [

toolkit/components/browser/nsIWebBrowser.idl

@@ -38,7 +38,6 @@ interface nsIWebBrowser : nsISupports
      * window via the browser's <CODE>nsIBaseWindow</CODE> interface.
      *
      * The chrome may optionally implement <CODE>nsIInterfaceRequestor</CODE>,
-     * <CODE>nsIWebBrowserChromeFocus</CODE>,
      * <CODE>nsIContextMenuListener</CODE> and
      * <CODE>nsITooltipListener</CODE> to receive additional notifications
      * from the browser object.
@@ -57,7 +56,6 @@ interface nsIWebBrowser : nsISupports
      * @see nsIBaseWindow
      * @see nsIWebBrowserChrome
      * @see nsIInterfaceRequestor
-     * @see nsIWebBrowserChromeFocus
      * @see nsIContextMenuListener
      * @see nsITooltipListener
      * @see nsIWeakReference

toolkit/components/browser/nsIWebBrowserChromeFocus.idl

@@ -1,32 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 0 -*-
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "nsISupports.idl"
-
-/**
- * The nsIWebBrowserChromeFocus is implemented by the same object as the
- * nsIEmbeddingSiteWindow. It represents the focus up-calls from mozilla
- * to the embedding chrome. See mozilla bug #70224 for gratuitous info.
- */
-
-[scriptable, uuid(947B2EE6-51ED-4C2B-9F45-426C27CA84C6)]
-interface nsIWebBrowserChromeFocus : nsISupports
-{
-    /**
-     * Set the focus at the next focusable element in the chrome. If
-     * aForDocumentNavigation is true, this was a document navigation, so
-     * focus the parent window.
-     */
-
-    void focusNextElement(in boolean aForDocumentNavigation);
-
-    /**
-     * Set the focus at the previous focusable element in the chrome.
-     */
-
-    void focusPrevElement(in boolean aForDocumentNavigation);
-
-};