1 files changed, 319 insertions, 0 deletions
diff --git a/sd/source/ui/view/FormShellManager.cxx b/sd/source/ui/view/FormShellManager.cxx
new file mode 100644
index 000000000..3efa9bed7
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+++ b/sd/source/ui/view/FormShellManager.cxx
@@ -0,0 +1,319 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <FormShellManager.hxx>
+
+#include <EventMultiplexer.hxx>
+#include <ViewShell.hxx>
+#include <ViewShellBase.hxx>
+#include <ViewShellManager.hxx>
+#include <Window.hxx>
+#include <vcl/vclevent.hxx>
+#include <svx/fmshell.hxx>
+#include <osl/diagnose.h>
+
+namespace sd {
+
+namespace {
+
+/** This factory is responsible for creating and deleting the FmFormShell.
+*/
+class FormShellManagerFactory
+    : public ::sd::ShellFactory<SfxShell>
+{
+public:
+    FormShellManagerFactory (ViewShell& rViewShell, FormShellManager& rManager);
+    virtual FmFormShell* CreateShell (ShellId nId) override;
+    virtual void ReleaseShell (SfxShell* pShell) override;
+
+private:
+    ::sd::ViewShell& mrViewShell;
+    FormShellManager& mrFormShellManager;
+};
+
+} // end of anonymous namespace
+
+FormShellManager::FormShellManager (ViewShellBase& rBase)
+    : mrBase(rBase),
+      mpFormShell(nullptr),
+      mbFormShellAboveViewShell(false),
+      mbIsMainViewChangePending(false),
+      mpMainViewShellWindow(nullptr)
+{
+    // Register at the EventMultiplexer to be informed about changes in the
+    // center pane.
+    Link<sd::tools::EventMultiplexerEvent&,void> aLink (LINK(this, FormShellManager, ConfigurationUpdateHandler));
+    mrBase.GetEventMultiplexer()->AddEventListener(aLink);
+
+    RegisterAtCenterPane();
+}
+
+FormShellManager::~FormShellManager()
+{
+    SetFormShell(nullptr);
+    UnregisterAtCenterPane();
+
+    // Unregister from the EventMultiplexer.
+    Link<sd::tools::EventMultiplexerEvent&,void> aLink (LINK(this, FormShellManager, ConfigurationUpdateHandler));
+    mrBase.GetEventMultiplexer()->RemoveEventListener(aLink);
+
+    if (mpSubShellFactory)
+    {
+        ViewShell* pShell = mrBase.GetMainViewShell().get();
+        if (pShell != nullptr)
+            mrBase.GetViewShellManager()->RemoveSubShellFactory(pShell,mpSubShellFactory);
+    }
+}
+
+void FormShellManager::SetFormShell (FmFormShell* pFormShell)
+{
+    if (mpFormShell == pFormShell)
+        return;
+
+    // Disconnect from the old form shell.
+    if (mpFormShell != nullptr)
+    {
+        mpFormShell->SetControlActivationHandler(Link<LinkParamNone*,void>());
+        EndListening(*mpFormShell);
+        mpFormShell->SetView(nullptr);
+    }
+
+    mpFormShell = pFormShell;
+
+    // Connect to the new form shell.
+    if (mpFormShell != nullptr)
+    {
+        mpFormShell->SetControlActivationHandler(
+            LINK(
+                this,
+                FormShellManager,
+                FormControlActivated));
+        StartListening(*mpFormShell);
+
+        ViewShell* pMainViewShell = mrBase.GetMainViewShell().get();
+        if (pMainViewShell != nullptr)
+        {
+            // Prevent setting the view twice at the FmFormShell.
+            FmFormView* pFormView = pMainViewShell->GetView();
+            if (mpFormShell->GetFormView() != pFormView)
+                mpFormShell->SetView(pFormView);
+        }
+    }
+
+    // Tell the ViewShellManager where on the stack to place the form shell.
+    mrBase.GetViewShellManager()->SetFormShell(
+        mrBase.GetMainViewShell().get(),
+        mpFormShell,
+        mbFormShellAboveViewShell);
+}
+
+void FormShellManager::RegisterAtCenterPane()
+{
+    ViewShell* pShell = mrBase.GetMainViewShell().get();
+    if (pShell == nullptr)
+        return;
+
+    // No form shell for the slide sorter.  Besides that it is not
+    // necessary, using both together results in crashes.
+    if (pShell->GetShellType() == ViewShell::ST_SLIDE_SORTER)
+        return;
+
+    mpMainViewShellWindow = pShell->GetActiveWindow();
+    if (mpMainViewShellWindow == nullptr)
+        return;
+
+    // Register at the window to get informed when to move the form
+    // shell to the bottom of the shell stack.
+    mpMainViewShellWindow->AddEventListener(
+        LINK(
+            this,
+            FormShellManager,
+            WindowEventHandler));
+
+    // Create a shell factory and with it activate the form shell.
+    OSL_ASSERT(!mpSubShellFactory);
+    mpSubShellFactory = std::make_shared<FormShellManagerFactory>(*pShell, *this);
+    mrBase.GetViewShellManager()->AddSubShellFactory(pShell,mpSubShellFactory);
+    mrBase.GetViewShellManager()->ActivateSubShell(*pShell, ToolbarId::FormLayer_Toolbox);
+}
+
+void FormShellManager::UnregisterAtCenterPane()
+{
+    if (mpMainViewShellWindow != nullptr)
+    {
+        // Unregister from the window.
+        mpMainViewShellWindow->RemoveEventListener(
+            LINK(
+                this,
+                FormShellManager,
+                WindowEventHandler));
+        mpMainViewShellWindow = nullptr;
+    }
+
+    // Unregister form at the form shell.
+    SetFormShell(nullptr);
+
+    // Deactivate the form shell and destroy the shell factory.
+    ViewShell* pShell = mrBase.GetMainViewShell().get();
+    if (pShell != nullptr)
+    {
+        mrBase.GetViewShellManager()->DeactivateSubShell(*pShell,  ToolbarId::FormLayer_Toolbox);
+        mrBase.GetViewShellManager()->RemoveSubShellFactory(pShell, mpSubShellFactory);
+    }
+
+    mpSubShellFactory.reset();
+}
+
+IMPL_LINK_NOARG(FormShellManager, FormControlActivated, LinkParamNone*, void)
+{
+    // The form shell has been activated.  To give it priority in reacting to
+    // slot calls the form shell is moved to the top of the object bar shell
+    // stack.
+    ViewShell* pShell = mrBase.GetMainViewShell().get();
+    if (pShell!=nullptr && !mbFormShellAboveViewShell)
+    {
+        mbFormShellAboveViewShell = true;
+
+        ViewShellManager::UpdateLock aLock (mrBase.GetViewShellManager());
+        mrBase.GetViewShellManager()->SetFormShell(pShell,mpFormShell,mbFormShellAboveViewShell);
+    }
+}
+
+IMPL_LINK(FormShellManager, ConfigurationUpdateHandler, sd::tools::EventMultiplexerEvent&, rEvent, void)
+{
+    switch (rEvent.meEventId)
+    {
+        case EventMultiplexerEventId::MainViewRemoved:
+            UnregisterAtCenterPane();
+            break;
+
+        case EventMultiplexerEventId::MainViewAdded:
+            mbIsMainViewChangePending = true;
+            break;
+
+        case EventMultiplexerEventId::ConfigurationUpdated:
+            if (mbIsMainViewChangePending)
+            {
+                mbIsMainViewChangePending = false;
+                RegisterAtCenterPane();
+            }
+            break;
+
+        default:
+            break;
+    }
+}
+
+IMPL_LINK(FormShellManager, WindowEventHandler, VclWindowEvent&, rEvent, void)
+{
+    switch (rEvent.GetId())
+    {
+        case VclEventId::WindowGetFocus:
+        {
+            // The window of the center pane got the focus.  Therefore
+            // the form shell is moved to the bottom of the object bar
+            // stack.
+            ViewShell* pShell = mrBase.GetMainViewShell().get();
+            if (pShell!=nullptr && mbFormShellAboveViewShell)
+            {
+                mbFormShellAboveViewShell = false;
+                ViewShellManager::UpdateLock aLock (mrBase.GetViewShellManager());
+                mrBase.GetViewShellManager()->SetFormShell(
+                    pShell,
+                    mpFormShell,
+                    mbFormShellAboveViewShell);
+            }
+        }
+        break;
+
+        case VclEventId::WindowLoseFocus:
+            // We follow the sloppy focus policy.  Losing the focus is
+            // ignored.  We wait for the focus to be placed either in
+            // the window or the form shell.  The later, however, is
+            // notified over the FormControlActivated handler, not this
+            // one.
+            break;
+
+        case VclEventId::ObjectDying:
+            mpMainViewShellWindow = nullptr;
+           break;
+
+        default: break;
+    }
+}
+
+void FormShellManager::Notify(SfxBroadcaster&, const SfxHint& rHint)
+{
+    if (rHint.GetId()!=SfxHintId::Dying)
+        return;
+
+    // If all goes well this listener is called after the
+    // FormShellManager was notified about the dying form shell by the
+    // FormShellManagerFactory.
+    OSL_ASSERT(mpFormShell==nullptr);
+    if (mpFormShell != nullptr)
+    {
+        mpFormShell = nullptr;
+        mrBase.GetViewShellManager()->SetFormShell(
+            mrBase.GetMainViewShell().get(),
+            nullptr,
+            false);
+    }
+}
+
+//===== FormShellManagerFactory ===============================================
+
+namespace {
+
+FormShellManagerFactory::FormShellManagerFactory (
+    ::sd::ViewShell& rViewShell,
+    FormShellManager& rManager)
+    : mrViewShell(rViewShell),
+      mrFormShellManager(rManager)
+{
+}
+
+FmFormShell* FormShellManagerFactory::CreateShell( ::sd::ShellId nId )
+{
+    FmFormShell* pShell = nullptr;
+
+    ::sd::View* pView = mrViewShell.GetView();
+    if (nId == ToolbarId::FormLayer_Toolbox)
+    {
+        pShell = new FmFormShell(&mrViewShell.GetViewShellBase(), pView);
+        mrFormShellManager.SetFormShell(pShell);
+    }
+
+    return pShell;
+}
+
+void FormShellManagerFactory::ReleaseShell (SfxShell* pShell)
+{
+    if (pShell != nullptr)
+    {
+        mrFormShellManager.SetFormShell(nullptr);
+        delete pShell;
+    }
+}
+
+} // end of anonymous namespace
+
+} // end of namespace sd
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */