src/apps/icon-o-matic/shape/commands/RemoveShapesCommand.cpp

   1 /*
   2  * Copyright 2006, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9 #include "RemoveShapesCommand.h"
  10
  11 #include <new>
  12 #include <stdio.h>
  13 #include <string.h>
  14
  15 #include <Catalog.h>
  16 #include <Locale.h>
  17
  18 #include "ShapeContainer.h"
  19 #include "Shape.h"
  20
  21
  22 #undef B_TRANSLATION_CONTEXT
  23 #define B_TRANSLATION_CONTEXT "Icon-O-Matic-RemoveShapesCmd"
  24
  25
  26 using std::nothrow;
  27
  28 // constructor
  29 RemoveShapesCommand::RemoveShapesCommand(ShapeContainer* container,
  30                                                                                  int32* const indices,
  31                                                                                  int32 count)
  32         : Command(),
  33           fContainer(container),
  34           fShapes(count > 0 ? new (nothrow) Shape*[count] : NULL),
  35           fIndices(count > 0 ? new (nothrow) int32[count] : NULL),
  36           fCount(count),
  37           fShapesRemoved(false)
  38 {
  39         if (!fContainer || !fShapes || !fIndices)
  40                 return;
  41
  42         memcpy(fIndices, indices, sizeof(int32) * fCount);
  43         for (int32 i = 0; i < fCount; i++)
  44                 fShapes[i] = fContainer->ShapeAt(fIndices[i]);
  45 }
  46
  47 // destructor
  48 RemoveShapesCommand::~RemoveShapesCommand()
  49 {
  50         if (fShapesRemoved && fShapes) {
  51                 for (int32 i = 0; i < fCount; i++)
  52                         fShapes[i]->ReleaseReference();
  53         }
  54         delete[] fShapes;
  55         delete[] fIndices;
  56 }
  57
  58 // InitCheck
  59 status_t
  60 RemoveShapesCommand::InitCheck()
  61 {
  62         return fContainer && fShapes && fIndices ? B_OK : B_NO_INIT;
  63 }
  64
  65 // Perform
  66 status_t
  67 RemoveShapesCommand::Perform()
  68 {
  69         status_t ret = B_OK;
  70
  71         // remove shapes from container
  72         for (int32 i = 0; i < fCount; i++) {
  73                 if (fShapes[i] && !fContainer->RemoveShape(fShapes[i])) {
  74                         ret = B_ERROR;
  75                         break;
  76                 }
  77         }
  78         fShapesRemoved = true;
  79
  80         return ret;
  81 }
  82
  83 // Undo
  84 status_t
  85 RemoveShapesCommand::Undo()
  86 {
  87         status_t ret = B_OK;
  88
  89         // add shapes to container at remembered indices
  90         for (int32 i = 0; i < fCount; i++) {
  91                 if (fShapes[i] && !fContainer->AddShape(fShapes[i], fIndices[i])) {
  92                         ret = B_ERROR;
  93                         break;
  94                 }
  95         }
  96         fShapesRemoved = false;
  97
  98         return ret;
  99 }
 100
 101 // GetName
 102 void
 103 RemoveShapesCommand::GetName(BString& name)
 104 {
 105 //      if (fCount > 1)
 106 //              name << _GetString(MOVE_MODIFIERS, "Move Shapes");
 107 //      else
 108 //              name << _GetString(MOVE_MODIFIER, "Move Shape");
 109         if (fCount > 1)
 110                 name << B_TRANSLATE("Remove Shapes");
 111         else
 112                 name << B_TRANSLATE("Remove Shape");
 113 }