sd/source/ui/sidebar/MasterPageContainerFiller.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SD_SOURCE_UI_SIDEBAR_MASTERPAGECONTAINERFILLER_HXX
  21 #define INCLUDED_SD_SOURCE_UI_SIDEBAR_MASTERPAGECONTAINERFILLER_HXX
  22
  23 #include <memory>
  24 #include "MasterPageContainer.hxx"
  25 #include "MasterPageDescriptor.hxx"
  26 #include <tools/AsynchronousTask.hxx>
  27
  28 namespace sd {
  29 class TemplateScanner;
  30 class TemplateEntry;
  31 }
  32
  33 namespace sd { namespace sidebar {
  34
  35 /** Fill a MasterPageContainer with information about the available master
  36     pages.  These are provided by one default page and from the existing
  37     Impress templates.  This is done asynchronously.
  38 */
  39 class MasterPageContainerFiller
  40     : public ::sd::tools::AsynchronousTask
  41 {
  42 public:
  43     class ContainerAdapter
  44     {
  45     public:
  46         virtual MasterPageContainer::Token PutMasterPage (
  47             const SharedMasterPageDescriptor& rpDescriptor) = 0;
  48         /** This method is called when all Impress templates have been added
  49             to the container via the PutMasterPage() method.
  50         */
  51         virtual void FillingDone() = 0;
  52
  53     protected:
  54         ~ContainerAdapter() {}
  55     };
  56
  57     explicit MasterPageContainerFiller (ContainerAdapter& rContainerAdapter);
  58     virtual ~MasterPageContainerFiller();
  59
  60     /** Run the next step of the task.  After HasNextStep() returns false
  61         this method should ignore further calls.
  62     */
  63     virtual void RunNextStep() override;
  64
  65     /** Return <TRUE/> when there is at least one more step to execute.
  66         When the task has been executed completely then <FALSE/> is
  67         returned.
  68     */
  69     virtual bool HasNextStep() override;
  70
  71 private:
  72     ContainerAdapter& mrContainerAdapter;
  73     // Remember what the next step has to do.
  74     enum State {
  75         INITIALIZE_TEMPLATE_SCANNER,
  76         SCAN_TEMPLATE,
  77         ADD_TEMPLATE,
  78         ERROR,
  79         DONE
  80     } meState;
  81     ::std::unique_ptr<TemplateScanner> mpScannerTask;
  82     const TemplateEntry* mpLastAddedEntry;
  83     int mnIndex;
  84
  85     State ScanTemplate();
  86     State AddTemplate();
  87 };
  88
  89 } } // end of namespace sd::sidebar
  90
  91 #endif
  92
  93 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */