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Diffstat (limited to '')
-rw-r--r-- | sd/source/ui/view/FormShellManager.cxx | 319 |
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 --- /dev/null +++ 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: */ |