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-rw-r--r-- | sd/source/ui/slidesorter/controller/SlsSelectionManager.cxx | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/sd/source/ui/slidesorter/controller/SlsSelectionManager.cxx b/sd/source/ui/slidesorter/controller/SlsSelectionManager.cxx new file mode 100644 index 000000000..e1f75b21c --- /dev/null +++ b/sd/source/ui/slidesorter/controller/SlsSelectionManager.cxx @@ -0,0 +1,309 @@ +/* -*- 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 <controller/SlsSelectionManager.hxx> + +#include <SlideSorter.hxx> +#include <controller/SlideSorterController.hxx> +#include <controller/SlsCurrentSlideManager.hxx> +#include <controller/SlsFocusManager.hxx> +#include <controller/SlsPageSelector.hxx> +#include <controller/SlsSelectionObserver.hxx> +#include <model/SlideSorterModel.hxx> +#include <model/SlsPageEnumerationProvider.hxx> +#include <model/SlsPageDescriptor.hxx> +#include <view/SlideSorterView.hxx> +#include <tools/diagnose_ex.h> +#include <drawdoc.hxx> +#include <sdpage.hxx> +#include <drawview.hxx> +#include <DrawViewShell.hxx> +#include <ViewShellBase.hxx> +#include <svx/svxids.hrc> +#include <com/sun/star/drawing/XMasterPagesSupplier.hpp> +#include <com/sun/star/drawing/XDrawPagesSupplier.hpp> + + +#include <sdresid.hxx> +#include <strings.hrc> +#include <app.hrc> + +using namespace ::com::sun::star; +using namespace ::com::sun::star::drawing; +using namespace ::com::sun::star::uno; +using namespace ::sd::slidesorter::model; +using namespace ::sd::slidesorter::view; +using namespace ::sd::slidesorter::controller; + +namespace sd::slidesorter::controller { + +SelectionManager::SelectionManager (SlideSorter& rSlideSorter) + : mrSlideSorter(rSlideSorter), + mrController(rSlideSorter.GetController()), + mnInsertionPosition(-1), + mpSelectionObserver(std::make_shared<SelectionObserver>(rSlideSorter)) +{ +} + +SelectionManager::~SelectionManager() +{ +} + +void SelectionManager::DeleteSelectedPages (const bool bSelectFollowingPage) +{ + // Create some locks to prevent updates of the model, view, selection + // state while modifying any of them. + SlideSorterController::ModelChangeLock aLock (mrController); + SlideSorterView::DrawLock aDrawLock (mrSlideSorter); + PageSelector::UpdateLock aSelectionLock (mrSlideSorter); + + // Hide focus. + bool bIsFocusShowing = mrController.GetFocusManager().IsFocusShowing(); + if (bIsFocusShowing) + mrController.GetFocusManager().ToggleFocus(); + + // Store pointers to all selected page descriptors. This is necessary + // because the pages get deselected when the first one is deleted. + model::PageEnumeration aPageEnumeration ( + PageEnumerationProvider::CreateSelectedPagesEnumeration(mrSlideSorter.GetModel())); + ::std::vector<SdPage*> aSelectedPages; + sal_Int32 nNewCurrentSlide (-1); + while (aPageEnumeration.HasMoreElements()) + { + SharedPageDescriptor pDescriptor (aPageEnumeration.GetNextElement()); + aSelectedPages.push_back(pDescriptor->GetPage()); + if (bSelectFollowingPage || nNewCurrentSlide<0) + nNewCurrentSlide = pDescriptor->GetPageIndex(); + } + if (aSelectedPages.empty()) + return; + + // Determine the slide to select (and thereby make the current slide) + // after the deletion. + if (bSelectFollowingPage) + nNewCurrentSlide -= aSelectedPages.size() - 1; + else + --nNewCurrentSlide; + + const auto pViewShell = mrSlideSorter.GetViewShell(); + const auto pDrawViewShell = pViewShell ? std::dynamic_pointer_cast<sd::DrawViewShell>(pViewShell->GetViewShellBase().GetMainViewShell()) : nullptr; + const auto pDrawView = pDrawViewShell ? pDrawViewShell->GetDrawView() : nullptr; + + if (pDrawView) + pDrawView->BlockPageOrderChangedHint(true); + + // Proper naming for the undo action + OUString sUndoComment(SdResId(STR_UNDO_DELETEPAGES)); + if (mrSlideSorter.GetView().GetDoc().GetDocumentType() == DocumentType::Draw) + sUndoComment = SdResId(STR_UNDO_DELETEPAGES_DRAW); + + // The actual deletion of the selected pages is done in one of two + // helper functions. They are specialized for normal respectively for + // master pages. + mrSlideSorter.GetView().BegUndo (sUndoComment); + if (mrSlideSorter.GetModel().GetEditMode() == EditMode::Page) + DeleteSelectedNormalPages(aSelectedPages); + else + DeleteSelectedMasterPages(aSelectedPages); + mrSlideSorter.GetView().EndUndo (); + + mrController.HandleModelChange(); + aLock.Release(); + if (pDrawView) + { + assert(pDrawViewShell); + pDrawView->BlockPageOrderChangedHint(false); + pDrawViewShell->ResetActualPage(); + } + + // Show focus and move it to next valid location. + if (bIsFocusShowing) + mrController.GetFocusManager().ToggleFocus(); + + // Set the new current slide. + if (nNewCurrentSlide < 0) + nNewCurrentSlide = 0; + else if (nNewCurrentSlide >= mrSlideSorter.GetModel().GetPageCount()) + nNewCurrentSlide = mrSlideSorter.GetModel().GetPageCount()-1; + mrController.GetPageSelector().CountSelectedPages(); + mrController.GetPageSelector().SelectPage(nNewCurrentSlide); + mrController.GetFocusManager().SetFocusedPage(nNewCurrentSlide); +} + +void SelectionManager::DeleteSelectedNormalPages (const ::std::vector<SdPage*>& rSelectedPages) +{ + // Prepare the deletion via the UNO API. + OSL_ASSERT(mrSlideSorter.GetModel().GetEditMode() == EditMode::Page); + + try + { + Reference<drawing::XDrawPagesSupplier> xDrawPagesSupplier( mrSlideSorter.GetModel().GetDocument()->getUnoModel(), UNO_QUERY_THROW ); + Reference<drawing::XDrawPages> xPages( xDrawPagesSupplier->getDrawPages(), UNO_SET_THROW ); + + // Iterate over all pages that were selected when this method was called + // and delete the draw page the notes page. The iteration is done in + // reverse order so that when one slide is not deleted (to avoid an + // empty document) the remaining slide is the first one. + ::std::vector<SdPage*>::const_reverse_iterator aI; + for (aI=rSelectedPages.rbegin(); aI!=rSelectedPages.rend(); ++aI) + { + // Do not delete the last slide in the document. + if (xPages->getCount() <= 1) + break; + + const sal_uInt16 nPage (model::FromCoreIndex((*aI)->GetPageNum())); + + Reference< XDrawPage > xPage( xPages->getByIndex( nPage ), UNO_QUERY_THROW ); + xPages->remove(xPage); + } + } + catch( Exception& ) + { + TOOLS_WARN_EXCEPTION( "sd", "SelectionManager::DeleteSelectedNormalPages()"); + } +} + +void SelectionManager::DeleteSelectedMasterPages (const ::std::vector<SdPage*>& rSelectedPages) +{ + // Prepare the deletion via the UNO API. + OSL_ASSERT(mrSlideSorter.GetModel().GetEditMode() == EditMode::MasterPage); + + try + { + Reference<drawing::XMasterPagesSupplier> xDrawPagesSupplier( mrSlideSorter.GetModel().GetDocument()->getUnoModel(), UNO_QUERY_THROW ); + Reference<drawing::XDrawPages> xPages( xDrawPagesSupplier->getMasterPages(), UNO_SET_THROW ); + + // Iterate over all pages that were selected when this method was called + // and delete the draw page the notes page. The iteration is done in + // reverse order so that when one slide is not deleted (to avoid an + // empty document) the remaining slide is the first one. + ::std::vector<SdPage*>::const_reverse_iterator aI; + for (aI=rSelectedPages.rbegin(); aI!=rSelectedPages.rend(); ++aI) + { + // Do not delete the last slide in the document. + if (xPages->getCount() <= 1) + break; + + const sal_uInt16 nPage (model::FromCoreIndex((*aI)->GetPageNum())); + + Reference< XDrawPage > xPage( xPages->getByIndex( nPage ), UNO_QUERY_THROW ); + xPages->remove(xPage); + } + } + catch( Exception& ) + { + TOOLS_WARN_EXCEPTION( "sd", "SelectionManager::DeleteSelectedMasterPages()"); + } +} + +void SelectionManager::SelectionHasChanged () +{ + ViewShell* pViewShell = mrSlideSorter.GetViewShell(); + if (pViewShell == nullptr) + return; + + pViewShell->Invalidate (SID_EXPAND_PAGE); + pViewShell->Invalidate (SID_SUMMARY_PAGE); + pViewShell->Invalidate(SID_SHOW_SLIDE); + pViewShell->Invalidate(SID_HIDE_SLIDE); + pViewShell->Invalidate(SID_DELETE_PAGE); + pViewShell->Invalidate(SID_DELETE_MASTER_PAGE); + pViewShell->Invalidate(SID_ASSIGN_LAYOUT); + + // StatusBar + pViewShell->Invalidate (SID_STATUS_PAGE); + pViewShell->Invalidate (SID_STATUS_LAYOUT); + pViewShell->Invalidate (SID_SCALE); + + OSL_ASSERT(mrController.GetCurrentSlideManager()); + SharedPageDescriptor pDescriptor(mrController.GetCurrentSlideManager()->GetCurrentSlide()); + if (pDescriptor) + pViewShell->UpdatePreview(pDescriptor->GetPage()); + + // Tell the selection change listeners that the selection has changed. + for (const auto& rLink : maSelectionChangeListeners) + { + rLink.Call(nullptr); + } + + // Reset the insertion position: until set again it is calculated from + // the current selection. + mnInsertionPosition = -1; +} + +void SelectionManager::AddSelectionChangeListener (const Link<LinkParamNone*,void>& rListener) +{ + if (::std::find ( + maSelectionChangeListeners.begin(), + maSelectionChangeListeners.end(), + rListener) == maSelectionChangeListeners.end()) + { + maSelectionChangeListeners.push_back (rListener); + } +} + +void SelectionManager::RemoveSelectionChangeListener(const Link<LinkParamNone*,void>& rListener) +{ + maSelectionChangeListeners.erase ( + ::std::find ( + maSelectionChangeListeners.begin(), + maSelectionChangeListeners.end(), + rListener)); +} + +sal_Int32 SelectionManager::GetInsertionPosition() const +{ + sal_Int32 nInsertionPosition (mnInsertionPosition); + if (nInsertionPosition < 0) + { + model::PageEnumeration aSelectedPages + (model::PageEnumerationProvider::CreateSelectedPagesEnumeration( + mrSlideSorter.GetModel())); + // Initialize (for the case of an empty selection) with the position + // at the end of the document. + nInsertionPosition = mrSlideSorter.GetModel().GetPageCount(); + while (aSelectedPages.HasMoreElements()) + { + const sal_Int32 nPosition (aSelectedPages.GetNextElement()->GetPage()->GetPageNum()); + // Convert *2+1 index to straight index (n-1)/2 after the page + // (+1). + nInsertionPosition = model::FromCoreIndex(nPosition) + 1; + } + + } + return nInsertionPosition; +} + +void SelectionManager::SetInsertionPosition (const sal_Int32 nInsertionPosition) +{ + if (nInsertionPosition < 0) + mnInsertionPosition = -1; + else if (nInsertionPosition > mrSlideSorter.GetModel().GetPageCount()) + { + // Assert but then ignore invalid values. + OSL_ASSERT(nInsertionPosition<=mrSlideSorter.GetModel().GetPageCount()); + return; + } + else + mnInsertionPosition = nInsertionPosition; +} + +} // end of namespace ::sd::slidesorter::controller + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |