/* -*- 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 . */ #ifndef INCLUDED_SD_INC_OUTLINER_HXX #define INCLUDED_SD_INC_OUTLINER_HXX #include #include #include "pres.hxx" #include "OutlinerIterator.hxx" #include #include class Dialog; class SdrObject; class SdrTextObj; class SdDrawDocument; namespace sd { class View; class ViewShell; class Window; /// Describes a single search hit: a set of rectangles on a given page. struct SearchSelection { /// 0-based index of the page that has the selection. int m_nPage; /** * List of selection rectangles in twips -- multiple rectangles only in * case the selection spans over more layout lines. */ OString m_aRectangles; SearchSelection(int nPage, const OString& rRectangles); bool operator==(const SearchSelection& rOther) const { return m_nPage == rOther.m_nPage && m_aRectangles == rOther.m_aRectangles; } }; } // end of namespace sd /** The main purpose of this class is searching and replacing as well as spelling of impress documents. The main part of both tasks lies in iterating over the pages and view modes of a document and apply the respective function to all objects containing text on those pages.

Relevant objects: There are two sets of objects to search/spell check. One is the set of all selected objects. The other consists of all objects on all pages in draw-, notes-, and handout view as well as slide- and background view (draw pages and master pages).

Iteration: Search/replace and spelling functions operate on shapes containing text. To cover all relevant objects an order has to be defined on the objects. For the set of all selected objects this order is simply the order in which they can be retrieved from the selection object.
When there is no selection the order is nested. The three modes of the draw view are on the outer level: draw mode, notes mode, handout mode. The inner level switches between draw pages and master pages. This leads to the following order:

  1. draw pages of draw mode
  2. master pages of draw mode
  3. draw pages of notes mode
  4. master pages of notes mode
  5. draw pages of handout mode
  6. master pages of handout mode
Iteration starts at the top of the current page. When reaching the end of the document, i.e. the last master page of the handout mode, it jumps to the first draw page of draw mode. In backward searches this order is reversed. When doing a replace all then the whole document is searched for matches starting at the first page of the draw/slide view (or last page of handout/background view even though search direction).

The start position is restored after finishing spell checking or replacing all matches in a document.

Some related pieces of information: The search dialog (SvxSearchDialog) can be controlled in more than one way:

  • A set of option flags returned by the slot call SID_SEARCH_OPTIONS handled by the SdDrawDocument::GetState() method.
  • The contents of the search item of type SvxSearchItem.
  • The HasSelection() view shell method that returns whether or not a selection exists. However, it is called from the search dialog with an argument so that only text selections are queried. This is only sufficient for searching the outline view.

    */ class SdOutliner : public SdrOutliner { public: friend class ::sd::outliner::OutlinerContainer; /** Create a new sd outliner object. @param pDoc The draw document from which to take the content. @param nMode The valid values OutlinerMode::DontKnow, OutlinerMode::TextObject, OutlinerMode::TitleObject, OutlinerMode::OutlineObject, and OutlinerMode::OutlineView are defined in editeng/outliner.hxx. */ SdOutliner( SdDrawDocument* pDoc, OutlinerMode nMode ); virtual ~SdOutliner() override; /// Forbid copy construction and copy assignment SdOutliner(const Outliner&) = delete; SdOutliner& operator=(const Outliner&) = delete; /** Despite the name this method is called prior to spell checking *and* searching and replacing. The position of current view mode/page/object/caret position is remembered and, depending on the search mode, may be restored after finishing searching/spell checking. */ void PrepareSpelling(); /** Initialize a spell check but do not start it yet. This method is a better candidate for the name PrepareSpelling. */ void StartSpelling(); /** Initiate a find and/or replace on the next relevant text object. @return Returns when the search/replace is finished (as indicated by user input to the search dialog). A value indicates that another call to this method is required. */ bool StartSearchAndReplace (const SvxSearchItem* pSearchItem); /** Iterate over the sentences in all text shapes and stop at the next sentence with spelling errors. While doing so the view mode may be changed and text shapes are set into edit mode. */ svx::SpellPortions GetNextSpellSentence(); /** Release all resources that have been created during the find&replace or spell check. */ void EndSpelling(); /** callback for textconversion */ bool ConvertNextDocument() override; /** Starts the text conversion (hangul/hanja or Chinese simplified/traditional) for the current viewshell */ void StartConversion( LanguageType nSourceLanguage, LanguageType nTargetLanguage, const vcl::Font *pTargetFont, sal_Int32 nOptions, bool bIsInteractive ); /** This is called internally when text conversion is started. The position of current view mode/page/object/caret position is remembered and will be restored after conversion. */ void BeginConversion(); /** Release all resources that have been created during the conversion */ void EndConversion(); enum ChangeHint { CH_VIEW_SHELL_INVALID, CH_VIEW_SHELL_VALID }; int GetIgnoreCurrentPageChangesLevel() const { return mnIgnoreCurrentPageChangesLevel; }; void IncreIgnoreCurrentPageChangesLevel() { mnIgnoreCurrentPageChangesLevel++; }; void DecreIgnoreCurrentPageChangesLevel() { mnIgnoreCurrentPageChangesLevel--; }; SdDrawDocument* GetDoc() const { return mpDrawDocument; } private: class Implementation; ::std::unique_ptr mpImpl; /// Specifies whether to search and replace, to spell check or to do a /// text conversion. enum mode {SEARCH, SPELL, TEXT_CONVERSION} meMode; /// The view which displays the searched objects. ::sd::View* mpView; /** The view shell containing the view. It is held as weak pointer to avoid keeping it alive when the view is changed during searching. */ std::weak_ptr<::sd::ViewShell> mpWeakViewShell; /// This window contains the view. VclPtr< ::sd::Window> mpWindow; /// The document on whose objects and pages this class operates. SdDrawDocument* mpDrawDocument; /** this is the language that is used for current text conversion. Only valid if meMode is TEXT_CONVERSION. */ LanguageType mnConversionLanguage; /** While the value of this flag is greater than 0 changes of the current page do not lead to selecting the corresponding text in the outliner. */ int mnIgnoreCurrentPageChangesLevel; /// Specifies whether the search string has been found so far. bool mbStringFound; /** This flag indicates whether there may exist a match of the search string before/after the current position in the document. It can be set to only when starting from the beginning/end of the document. When reaching the end/beginning with it still be set to then there exists no match and the search can be terminated. */ bool mbMatchMayExist; /// The number of pages in the current view. sal_uInt16 mnPageCount; /** A value indicates that the end of the find&replace or spell check has been reached. */ bool mbEndOfSearch; /** Set to when an object has been prepared successfully for searching/spell checking. This flag directs the internal iteration which stops when set to . */ bool mbFoundObject; /** This flag indicates whether to search forward or backwards. */ bool mbDirectionIsForward; /** This flag indicates that only the selected objects are to be searched. */ bool mbRestrictSearchToSelection; /** When the search is restricted to the current selection then this list contains pointers to all the objects of the selection. This copy is necessary because during the search process the mark list is modified. */ ::std::vector maMarkListCopy; /** Current object that may be a text object. The object pointer to corresponds to mnObjIndex. While iterating over the objects on a page mpObj will point to every object while mpTextObj will be set only to valid text objects. */ SdrObject* mpObj; /** this stores the first object that is used for text conversion. Conversion automatically wraps around the document and stops when it finds this object again. */ SdrObject* mpFirstObj; /// Candidate for being searched/spell checked. SdrTextObj* mpTextObj; /// Current text to be searched/spelled inside the current text object sal_Int32 mnText; /// Paragraph object of mpTextObj. OutlinerParaObject* mpParaObj; /// The view mode that was active when starting to search/spell check. PageKind meStartViewMode; /// The master page mode that was active when starting to search/spell check. EditMode meStartEditMode; /// The current page index on starting to search/spell check. sal_uInt16 mnStartPageIndex; /// The object in edit mode when searching /spell checking was started /// (if any). SdrObject* mpStartEditedObject; /// The position of the caret when searching /spell checking was started. ESelection maStartSelection; /** The search item contains various attributes that define the type of search. It is set every time the SearchAndReplaceAll method is called. */ const SvxSearchItem* mpSearchItem; /// The actual object iterator. ::sd::outliner::Iterator maObjectIterator; /// The current position of the object iterator. ::sd::outliner::IteratorPosition maCurrentPosition; /// The position when the search started. Corresponds largely to the /// m?Start* members. ::sd::outliner::Iterator maSearchStartPosition; /** The last valid position describes where the last text object has been found. This position is restored when some dialogs are shown. The position is initially set to the where the search begins. */ ::sd::outliner::IteratorPosition maLastValidPosition; /** When this flag is true then a PrepareSpelling() is executed when StartSearchAndReplace() is called the next time. */ bool mbPrepareSpellingPending; /** Initialize the object iterator. Call this method after being invoked from the search or spellcheck dialog. It creates a new iterator pointing at the current object when this has not been done before. It reverses the direction of iteration if the given flag differs from the current direction. @param bDirectionIsForward This flag specifies in which direction to iterator over the objects. If it differs from the current direction the iterator is reversed. */ void Initialize (bool bDirectionIsForward); /** Do search and replace for whole document. */ bool SearchAndReplaceAll(); /** Do search and replace for next match. @param pSelections When tiled rendering and not 0, then don't emit LOK events, instead assume the caller will do so. @return The return value specifies whether the search ended () or another call to this method is required (). */ bool SearchAndReplaceOnce(std::vector<::sd::SearchSelection>* pSelections = nullptr); /** Detect changes of the document or view and react accordingly. Such changes may occur because different calls to SearchAndReplace() there usually is user interaction. This is at least the press of the search or replace button but may include any other action some of which affect the search. */ void DetectChange(); /** Detect whether the selection has changed. @return Return when the selection has been changed since the last call to this method. */ bool DetectSelectionChange(); /** Remember the current edited object/caret position/page/view mode when starting to search/spell check so that it can be restored on termination. */ void RememberStartPosition(); /** Restore the position stored in the last call of RememberStartPositiony. */ void RestoreStartPosition(); /** Provide next object to search or spell check as text object in edit mode on the current page. This skips all objects that do not match or are no text object. */ void ProvideNextTextObject(); /** Handle the situation that the iterator has reached the last object. This may result in setting the mbEndOfSearch flag back to . This method may show either the end-of-search dialog or the wrap-around dialog. */ void EndOfSearch(); /** Show a dialog that tells the user that the search has ended either because there are no more matches after finding at least one or that no match has been found at all. */ void ShowEndOfSearchDialog(); /** Show a dialog that asks the user whether to wrap around to the beginning/end of the document and continue with the search/spell check. */ bool ShowWrapArroundDialog(); /** Check whether the object pointed to by the iterator is a valid text object. @param aPosition The object for which to test whether it is a valid text object. */ static bool IsValidTextObject (const ::sd::outliner::IteratorPosition& rPosition); /** Put text of current text object into outliner so that the text can be searched/spell checked. */ void PutTextIntoOutliner(); /** Prepare to do spell checking on the current text object. This includes putting it into edit mode. Under certain conditions this method sets mbEndOfSearch to . */ void PrepareSpellCheck(); /** Prepare to search and replace on the current text object. This includes putting it into edit mode. */ void PrepareSearchAndReplace(); /** Prepare to do a text conversion on the current text object. This includes putting it into edit mode. */ void PrepareConversion(); /** Switch to a new view mode. Try to restore the original edit mode before doing so. @param ePageKind Specifies the new view mode. */ void SetViewMode (PageKind ePageKind); /** Switch to the page or master page specified by the mnPage index. Master page mode is specified by meEditMode. @param eEditMode The new edit mode. @param nPageIndex The new page index. */ void SetPage (EditMode eEditMode, sal_uInt16 nPageIndex); /** Switch on edit mode for the currently selected text object. */ void EnterEditMode (bool bGrabFocus); /** Return the position at which a new search is started with respect to the search direction as specified by the argument. @return The position mentioned above in form of a selection with start equals end. */ ESelection GetSearchStartPosition(); /** Detect whether there exists a previous match. Note that only the absence of such a match can be detected reliably. An existing match is assumed when the search started not at the beginning/end of the presentation. This does not have to be true. The user can have set the cursor at the middle of the text without a prior search. @return Returns when there is no previous match and when there may be one. */ bool HasNoPreviousMatch(); /** Handle a failed search (with or without replace) for the outline mode. Show message boxes when the search failed completely, i.e. there is no match in the whole presentation, or when no further match exists. @return The returned value indicates whether another (wrapped around) search shall take place. If that is so, then it is the caller's responsibility to set the cursor position accordingly. */ bool HandleFailedSearch(); /** Take a position as returned by an object iterator and switch to the view and page on which the object specified by this position is located. @param rPosition This position points to a SdrObject object and contains the view and page where it is located. @return Return a pointer to the SdrObject. */ SdrObject* SetObject (const ::sd::outliner::IteratorPosition& rPosition); /** Use this method when the view shell in which to search has changed. It handles i.e. registering at the associated view as selection change listener. */ void SetViewShell (const std::shared_ptr<::sd::ViewShell>& rpViewShell); /** Activate or deactivate the search in the current selection. Call this method whenever the selection has changed. This method creates a copy of the current selection and reassigns the object iterator to the current() iterator. */ void HandleChangedSelection(); /** Initiate the spell check of the next relevant text object. When the outline view is active then this method is called after a wrap around to continue at the beginning of the document. @return Returns to indicate that another call to this method is required. When all text objects have been processed then is returned. */ virtual bool SpellNextDocument() override; /** Show the given message box and make it modal. It is assumed that the parent of the given dialog is NULL, i.e. the application window. This function makes sure that the otherwise non-modal search dialog, if visible, is locked, too. */ sal_uInt16 ShowModalMessageBox (Dialog& rMessageBox); }; #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */