include/svx/sdr/properties/properties.hxx

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  19
  20 #ifndef INCLUDED_SVX_SDR_PROPERTIES_PROPERTIES_HXX
  21 #define INCLUDED_SVX_SDR_PROPERTIES_PROPERTIES_HXX
  22
  23 #include <sal/types.h>
  24 #include <svx/svxdllapi.h>
  25
  26 class SdrObject;
  27 class SfxItemSet;
  28 class SfxPoolItem;
  29 class SfxStyleSheet;
  30 class Fraction;
  31 class SfxItemPool;
  32 class SdrModel;
  33
  34 namespace sdr
  35 {
  36     namespace properties
  37     {
  38         class ItemChangeBroadcaster;
  39     }
  40 }
  41
  42 namespace sdr
  43 {
  44     namespace properties
  45     {
  46         class SVX_DLLPUBLIC BaseProperties
  47         {
  48         private:
  49             // the owner of this Properties. Set from constructor and not
  50             // to be changed in any way.
  51             SdrObject&                                      mrObject;
  52
  53         protected:
  54
  55             // create a new object specific itemset with object specific ranges.
  56             virtual SfxItemSet* CreateObjectSpecificItemSet(SfxItemPool& pPool) = 0;
  57
  58             // internal access to SdrObject
  59             const SdrObject& GetSdrObject() const;
  60
  61             SdrObject& GetSdrObject();
  62
  63             // Test changeability for a single item. If a implementation wants to prevent
  64             // changing an item it should override this method.
  65             virtual bool AllowItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = 0) const = 0;
  66
  67             // Do the internal ItemChange. If only nWhich is given, the item needs to be cleared.
  68             // Also needs to handle if nWhich and pNewItem is 0, which means to clear all items.
  69             virtual void ItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = 0) = 0;
  70
  71             // Called after ItemChange() is done for all items. Allows local reactions on
  72             // specific item changes
  73             virtual void PostItemChange(const sal_uInt16 nWhich) = 0;
  74
  75             // Internally react on ItemSet changes. The given ItemSet contains all changed items, the new ones.
  76             virtual void ItemSetChanged(const SfxItemSet& rSet) = 0;
  77
  78         public:
  79             // basic constructor, used from SdrObject.
  80             explicit BaseProperties(SdrObject& rObj);
  81
  82             // constructor for copying, but using new object. Used from the Clone()
  83             // method.
  84             BaseProperties(const BaseProperties& rProps, SdrObject& rObj);
  85
  86             // destructor
  87             virtual ~BaseProperties();
  88
  89             // Clone() operator, normally just calls the local copy constructor,
  90             // see above.
  91             virtual BaseProperties& Clone(SdrObject& rObj) const = 0;
  92
  93             // Get the local ItemSet. This directly returns the local ItemSet of the object. No
  94             // merging of ItemSets is done for e.g. Group objects.
  95             virtual const SfxItemSet& GetObjectItemSet() const = 0;
  96
  97             // get merged ItemSet. Normally, this maps directly to GetObjectItemSet(), but may
  98             // be overridden e.g for group objects to return a merged ItemSet of the object.
  99             // When using this method the returned ItemSet may contain items in the state
 100             // SfxItemState::DONTCARE which means there were several such items with different
 101             // values.
 102             virtual const SfxItemSet& GetMergedItemSet() const;
 103
 104             // Sets all items which are on state SfxItemState::SET in rSet at the local ItemSet.
 105             // Uses AllowItemChange(), ItemChange(), PostItemChange() and ItemSetChanged() calls.
 106             virtual void SetObjectItemSet(const SfxItemSet& rSet) = 0;
 107
 108             // Set merged ItemSet. Normally, this maps to SetObjectItemSet().
 109             virtual void SetMergedItemSet(const SfxItemSet& rSet, bool bClearAllItems = false);
 110
 111             // Set single item at the local ItemSet. Uses AllowItemChange(),
 112             // ItemChange(), PostItemChange() and ItemSetChanged() calls.
 113             virtual void SetObjectItem(const SfxPoolItem& rItem) = 0;
 114
 115             // Set a single item direct. Only uses AllowItemChange() and ItemChange(),
 116             // but not PostItemChange() and ItemSetChanged() calls.
 117             virtual void SetObjectItemDirect(const SfxPoolItem& rItem) = 0;
 118
 119             // Clear a single local item. Uses AllowItemChange(),
 120             // ItemChange(), PostItemChange() and ItemSetChanged() calls.
 121             virtual void ClearObjectItem(const sal_uInt16 nWhich = 0) = 0;
 122
 123             // Set a single item, iterate over hierarchies if necessary. Default
 124             // Implementation falls back to ClearObjectItem().
 125             virtual void SetMergedItem(const SfxPoolItem& rItem);
 126
 127             // Clear a single item, iterate over hierarchies if necessary. Default
 128             // Implementation falls back to ClearObjectItem().
 129             virtual void ClearMergedItem(const sal_uInt16 nWhich = 0);
 130
 131             // Clear single item direct. Only uses AllowItemChange() and ItemChange(),
 132             // but not PostItemChange() and ItemSetChanged() calls.
 133             // Also supports complete deletion of items when default parameter 0 is used.
 134             virtual void ClearObjectItemDirect(const sal_uInt16 nWhich = 0) = 0;
 135
 136             // Set a new StyleSheet. Registers as listener at the StyleSheet to get knowledge
 137             // of StyleSheet changes.
 138             virtual void SetStyleSheet(SfxStyleSheet* pNewStyleSheet, bool bDontRemoveHardAttr) = 0;
 139
 140             // Get the installed StyleSheet.
 141             virtual SfxStyleSheet* GetStyleSheet() const = 0;
 142
 143             // Scale the local ItemSet as far as it contains metric items.
 144             // Override this to do it for hierarchical objects like e.g. groups.
 145             virtual void Scale(const Fraction& rScale);
 146
 147             // Move local items to a new ItemPool.
 148             // Override this to do it for hierarchical objects like e.g. groups.
 149             virtual void MoveToItemPool(SfxItemPool* pSrcPool, SfxItemPool* pDestPool, SdrModel* pNewModel = 0L);
 150
 151             // Set new model.
 152             virtual void SetModel(SdrModel* pOldModel, SdrModel* pNewModel);
 153
 154             // force all attributes which come from styles to hard attributes
 155             // to be able to live without the style.
 156             virtual void ForceStyleToHardAttributes();
 157
 158             // syntactical sugar for ItemSet accesses. Broadcasts before and after the changes
 159             // to invalidate views in old and new BoundRects. As soon as the repaint mechanism
 160             // will be changed these broadcasts will no longer be needed.
 161             //void SetItemAndBroadcast(const SfxPoolItem& rItem);
 162             //void ClearItemAndBroadcast(const sal_uInt16 nWhich = 0);
 163             void SetMergedItemSetAndBroadcast(const SfxItemSet& rSet, bool bClearAllItems = false);
 164
 165             // Just a convenient shortcut for GetObjectItemSet().Get(nWhich).
 166             const SfxPoolItem& GetItem(const sal_uInt16 nWhich) const;
 167
 168             // support for convenient broadcasting. Used from SetMergedItemAndBroadcast(),
 169             // ClearItemAndBroadcast() and SetItemSetAndBroadcast(), see above.
 170             // But also from inside SdrObjects.
 171             void BroadcastItemChange(const ItemChangeBroadcaster& rChange);
 172
 173             // #i101556# add versioning mechanism; used from e.g. text attribute set to
 174             // allow detection of e.g. style sheet or single text attribute changes. The
 175             // default implementation returns 0 (zero)
 176             virtual sal_uInt32 getVersion() const;
 177         };
 178
 179         // checks the FillStyle item and removes unneeded Gradient, FillBitmap and Hatch items
 180         void SVX_DLLPUBLIC CleanupFillProperties( SfxItemSet& rItemSet );
 181
 182     } // end of namespace properties
 183 } // end of namespace sdr
 184
 185 #endif // INCLUDED_SVX_SDR_PROPERTIES_PROPERTIES_HXX
 186
 187 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */