WASM --enable-wasm-strip now skips lots of LO code

... resulting in a stripped-down, Writer-only build to decrease
the resulting WASM bytecode size.

It removes the following code from the build:
* All other major modules: Base, Calc, Chart, Draw, Impress and
Math and related writerperfect filters
* The premultiply tables
* The (auto-)recovery functionality
* All accessibility (but not the accessibility document checker)
* The LanguageGuess component
* EPUB support
* The start center / BackingWindow
* The TipOfTheDay functionality
* The splash screen communication

Currently crashs with anything different then soffice --writer.
Closing the document also still crashes.

FYI: many of these features are now behind ENABLE_WASM_STRIP_*
defines, but they normally don't work on their own, globally!
That's because we started with stripping the main components.

Change-Id: Ib9c0f9452815910c0a2aceaf142ba1ad4a9cb0d7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126182
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

5 files changed, 35 insertions, 4 deletions

diff --git a/sfx2/Library_sfx.mk b/sfx2/Library_sfx.mk
index 51a34d510771..d790d9fef901 100644
--- a/sfx2/Library_sfx.mk
+++ b/sfx2/Library_sfx.mk
@@ -23,6 +23,10 @@ $(eval $(call gb_Library_add_sdi_headers,sfx,sfx2/sdi/sfxslots))
 
 $(eval $(call gb_Library_set_componentfile,sfx,sfx2/util/sfx,services))
 
+$(eval $(call gb_Library_add_componentimpls,sfx, \
+    $(if $(ENABLE_WASM_STRIP_RECENT),,extended) \
+))
+
 $(eval $(call gb_Library_set_precompiled_header,sfx,sfx2/inc/pch/precompiled_sfx))
 
 $(eval $(call gb_Library_use_custom_headers,sfx,\
@@ -81,6 +85,15 @@ $(eval $(call gb_Library_use_externals,sfx,\
     orcus-parser\
 ))
 
+ifneq ($(ENABLE_WASM_STRIP_RECENT),TRUE)
+$(eval $(call gb_Library_add_exception_objects,sfx,\
+    sfx2/source/dialog/backingcomp \
+    sfx2/source/dialog/backingwindow \
+    sfx2/source/control/recentdocsview \
+    sfx2/source/control/recentdocsviewitem \
+))
+endif
+
 $(eval $(call gb_Library_add_exception_objects,sfx,\
     sfx2/source/accessibility/AccessibilityCheck \
     sfx2/source/accessibility/AccessibilityIssue \
@@ -142,8 +155,6 @@ $(eval $(call gb_Library_add_exception_objects,sfx,\
     sfx2/source/control/msg \
     sfx2/source/control/msgpool \
     sfx2/source/control/objface \
-    sfx2/source/control/recentdocsview \
-    sfx2/source/control/recentdocsviewitem \
     sfx2/source/control/request \
     sfx2/source/control/sfxstatuslistener \
     sfx2/source/control/shell \
@@ -170,8 +181,6 @@ $(eval $(call gb_Library_add_exception_objects,sfx,\
     sfx2/source/devtools/DocumentModelTreeHandler \
     sfx2/source/devtools/ObjectInspectorTreeHandler \
     sfx2/source/dialog/alienwarn \
-    sfx2/source/dialog/backingcomp \
-    sfx2/source/dialog/backingwindow \
     sfx2/source/dialog/basedlgs \
     sfx2/source/dialog/checkin \
     sfx2/source/dialog/dialoghelper \
diff --git a/sfx2/source/appl/appserv.cxx b/sfx2/source/appl/appserv.cxx
index b8c80823daf3..980d4cb057e9 100644
--- a/sfx2/source/appl/appserv.cxx
+++ b/sfx2/source/appl/appserv.cxx
@@ -18,6 +18,8 @@
  */
 
 #include <config_features.h>
+#include <config_wasm_strip.h>
+
 #include <com/sun/star/drawing/ModuleDispatcher.hpp>
 #include <com/sun/star/frame/Desktop.hpp>
 #include <com/sun/star/frame/DispatchResultEvent.hpp>
@@ -504,6 +506,7 @@ void SfxApplication::MiscExec_Impl( SfxRequest& rReq )
             sfx2::openUriExternally(sURL, false, rReq.GetFrameWeld());
             break;
         }
+#if !ENABLE_WASM_STRIP_PINGUSER
         case SID_GETINVOLVED:
         {
             // Open get involved/join us page based on locales
@@ -539,6 +542,7 @@ void SfxApplication::MiscExec_Impl( SfxRequest& rReq )
             sfx2::openUriExternally(sURL, false, rReq.GetFrameWeld());
             break;
         }
+#endif
         case SID_SHOW_LICENSE:
         {
             LicenseDialog aDialog(rReq.GetFrameWeld());
@@ -618,6 +622,7 @@ void SfxApplication::MiscExec_Impl( SfxRequest& rReq )
             break;
         }
         // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+#if !ENABLE_WASM_STRIP_PINGUSER
         case SID_TIPOFTHEDAY:
         {
             SfxAbstractDialogFactory* pFact = SfxAbstractDialogFactory::Create();
@@ -626,6 +631,7 @@ void SfxApplication::MiscExec_Impl( SfxRequest& rReq )
             bDone = true;
             break;
         }
+#endif
 
         // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
         case SID_ABOUT:
diff --git a/sfx2/source/view/viewfrm.cxx b/sfx2/source/view/viewfrm.cxx
index 7050dee85964..0c9a742158d2 100644
--- a/sfx2/source/view/viewfrm.cxx
+++ b/sfx2/source/view/viewfrm.cxx
@@ -18,6 +18,8 @@
  */
 
 #include <config_feature_desktop.h>
+#include <config_wasm_strip.h>
+
 #include <osl/file.hxx>
 #include <sfx2/docfilt.hxx>
 #include <sfx2/infobar.hxx>
@@ -47,7 +49,9 @@
 #include <vcl/stdtext.hxx>
 #include <vcl/weld.hxx>
 #include <vcl/weldutils.hxx>
+#if !ENABLE_WASM_STRIP_PINGUSER
 #include <unotools/VersionConfig.hxx>
+#endif
 #include <svtools/miscopt.hxx>
 #include <tools/diagnose_ex.h>
 #include <com/sun/star/container/XIndexAccess.hpp>
@@ -1396,6 +1400,7 @@ void SfxViewFrame::Notify( SfxBroadcaster& /*rBC*/, const SfxHint& rHint )
                 rBind.Invalidate( SID_RELOAD );
                 rBind.Invalidate( SID_EDITDOC );
 
+#if !ENABLE_WASM_STRIP_PINGUSER
                 bool bIsHeadlessOrUITest = SfxApplication::IsHeadlessOrUITest(); //uitest.uicheck fails when the dialog is open
 
                 //what's new infobar
@@ -1476,6 +1481,7 @@ void SfxViewFrame::Notify( SfxBroadcaster& /*rBC*/, const SfxHint& rHint )
                     officecfg::Setup::Product::LastTimeDonateShown::set(nNow, batch);
                     batch->commit();
                 }
+#endif
 
                 // read-only infobar if necessary
                 const SfxViewShell *pVSh;
@@ -1628,6 +1634,7 @@ void SfxViewFrame::Notify( SfxBroadcaster& /*rBC*/, const SfxHint& rHint )
     }
 }
 
+#if !ENABLE_WASM_STRIP_PINGUSER
 IMPL_LINK_NOARG(SfxViewFrame, WhatsNewHandler, weld::Button&, void)
 {
     GetDispatcher()->Execute(SID_WHATSNEW);
@@ -1642,6 +1649,7 @@ IMPL_LINK_NOARG(SfxViewFrame, DonationHandler, weld::Button&, void)
 {
     GetDispatcher()->Execute(SID_DONATION);
 }
+#endif
 
 IMPL_LINK(SfxViewFrame, SwitchReadOnlyHandler, weld::Button&, rButton, void)
 {
diff --git a/sfx2/util/sfx.component b/sfx2/util/sfx.component
index a7c9930e0ec8..7970342db206 100644
--- a/sfx2/util/sfx.component
+++ b/sfx2/util/sfx.component
@@ -23,6 +23,7 @@
       constructor="com_sun_star_comp_sfx2_BackingComp_get_implementation">
     <service name="com.sun.star.frame.StartModule"/>
     <service name="com.sun.star.frame.ProtocolHandler"/>
+    <optional/>
   </implementation>
   <implementation name="SfxDocumentMetaData"
       constructor="SfxDocumentMetaData_get_implementation">
diff --git a/sfx2/util/sfx.component.extended b/sfx2/util/sfx.component.extended
new file mode 100644
index 000000000000..2695e06a0d1a
--- /dev/null
+++ b/sfx2/util/sfx.component.extended
@@ -0,0 +1,7 @@
+# This file is part of the LibreOffice project.
+#
+# 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/.
+
+com.sun.star.comp.sfx2.BackingComp