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TypeInState.h
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00037 
00038 #ifndef TypeInState_h__
00039 #define TypeInState_h__
00040 
00041 #include "nsCOMPtr.h"
00042 #include "nsIDOMNode.h"
00043 #include "nsISelection.h"
00044 #include "nsISelectionListener.h"
00045 #include "nsEditProperty.h"
00046 #include "nsString.h"
00047 #include "nsVoidArray.h"
00048 
00049 struct PropItem
00050 {
00051   nsIAtom *tag;
00052   nsString attr;
00053   nsString value;
00054   
00055   PropItem() : tag(nsnull), attr(), value() {};
00056   PropItem(nsIAtom *aTag, const nsAString &aAttr, const nsAString &aValue);
00057   ~PropItem();
00058 };
00059 
00060 class TypeInState : public nsISelectionListener
00061 {
00062 public:
00063 
00064   NS_DECL_ISUPPORTS
00065 
00066   TypeInState();
00067   void Reset();
00068   virtual ~TypeInState();
00069 
00070   nsresult UpdateSelState(nsISelection *aSelection);
00071 
00072   // nsISelectionListener
00073   NS_DECL_NSISELECTIONLISTENER
00074 
00075   nsresult SetProp(nsIAtom *aProp);
00076   nsresult SetProp(nsIAtom *aProp, const nsString &aAttr);
00077   nsresult SetProp(nsIAtom *aProp, const nsString &aAttr, const nsString &aValue);
00078 
00079   nsresult ClearAllProps();
00080   nsresult ClearProp(nsIAtom *aProp);
00081   nsresult ClearProp(nsIAtom *aProp, const nsString &aAttr);
00082   
00083   //**************************************************************************
00084   //    TakeClearProperty: hands back next poroperty item on the clear list.
00085   //                       caller assumes ownership of PropItem and must delete it.
00086   nsresult TakeClearProperty(PropItem **outPropItem);
00087 
00088   //**************************************************************************
00089   //    TakeSetProperty: hands back next poroperty item on the set list.
00090   //                     caller assumes ownership of PropItem and must delete it.
00091   nsresult TakeSetProperty(PropItem **outPropItem);
00092 
00093   //**************************************************************************
00094   //    TakeRelativeFontSize: hands back relative font value, which is then
00095   //                          cleared out.
00096   nsresult TakeRelativeFontSize(PRInt32 *outRelSize);
00097 
00098   nsresult GetTypingState(PRBool &isSet, PRBool &theSetting, nsIAtom *aProp);
00099   nsresult GetTypingState(PRBool &isSet, PRBool &theSetting, nsIAtom *aProp, 
00100                           const nsString &aAttr);
00101   nsresult GetTypingState(PRBool &isSet, PRBool &theSetting, nsIAtom *aProp, 
00102                           const nsString &aAttr, nsString* outValue);
00103 
00104   static   PRBool FindPropInList(nsIAtom *aProp, const nsAString &aAttr, nsAString *outValue, nsVoidArray &aList, PRInt32 &outIndex);
00105 
00106 protected:
00107 
00108   nsresult RemovePropFromSetList(nsIAtom *aProp, const nsString &aAttr);
00109   nsresult RemovePropFromClearedList(nsIAtom *aProp, const nsString &aAttr);
00110   PRBool IsPropSet(nsIAtom *aProp, const nsString &aAttr, nsString* outValue);
00111   PRBool IsPropSet(nsIAtom *aProp, const nsString &aAttr, nsString* outValue, PRInt32 &outIndex);
00112   PRBool IsPropCleared(nsIAtom *aProp, const nsString &aAttr);
00113   PRBool IsPropCleared(nsIAtom *aProp, const nsString &aAttr, PRInt32 &outIndex);
00114 
00115   nsVoidArray mSetArray;
00116   nsVoidArray mClearedArray;
00117   PRInt32 mRelativeFontSize;
00118   nsCOMPtr<nsIDOMNode> mLastSelectionContainer;
00119   PRInt32 mLastSelectionOffset;
00120   
00121   friend class nsHTMLEditRules;
00122 };
00123 
00124 
00125 
00126 #endif  // TypeInState_h__
00127