layout/forms/nsFileControlFrame.h

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  37
  38 #ifndef nsFileControlFrame_h___
  39 #define nsFileControlFrame_h___
  40
  41 #include "nsBlockFrame.h"
  42 #include "nsIFormControlFrame.h"
  43 #include "nsIDOMEventListener.h"
  44 #include "nsIAnonymousContentCreator.h"
  45 #include "nsICapturePicker.h"
  46 #include "nsCOMPtr.h"
  47
  48 class nsTextControlFrame;
  49 class nsIDOMDragEvent;
  50
  51 class nsFileControlFrame : public nsBlockFrame,
  52                            public nsIFormControlFrame,
  53                            public nsIAnonymousContentCreator
  54 {
  55 public:
  56   nsFileControlFrame(nsStyleContext* aContext);
  57
  58   NS_IMETHOD Init(nsIContent* aContent,
  59                   nsIFrame*   aParent,
  60                   nsIFrame*   aPrevInFlow);
  61
  62   NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
  63                               const nsRect&           aDirtyRect,
  64                               const nsDisplayListSet& aLists);
  65
  66   NS_DECL_QUERYFRAME
  67   NS_DECL_FRAMEARENA_HELPERS
  68
  69   // nsIFormControlFrame
  70   virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue);
  71   virtual nsresult GetFormProperty(nsIAtom* aName, nsAString& aValue) const;
  72   virtual void SetFocus(bool aOn, bool aRepaint);
  73
  74   virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
  75
  76   virtual void DestroyFrom(nsIFrame* aDestructRoot);
  77
  78 #ifdef NS_DEBUG
  79   NS_IMETHOD GetFrameName(nsAString& aResult) const;
  80 #endif
  81
  82   NS_IMETHOD AttributeChanged(PRInt32         aNameSpaceID,
  83                               nsIAtom*        aAttribute,
  84                               PRInt32         aModType);
  85   virtual void ContentStatesChanged(nsEventStates aStates);
  86   virtual bool IsLeaf() const;
  87
  88
  89
  90   // nsIAnonymousContentCreator
  91   virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements);
  92   virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
  93                                         PRUint32 aFilter);
  94
  95 #ifdef ACCESSIBILITY
  96   virtual already_AddRefed<nsAccessible> CreateAccessible();
  97 #endif
  98
  99   typedef bool (*AcceptAttrCallback)(const nsAString&, void*);
 100   void ParseAcceptAttribute(AcceptAttrCallback aCallback, void* aClosure) const;
 101
 102 protected:
 103
 104   class MouseListener;
 105   friend class MouseListener;
 106   class MouseListener : public nsIDOMEventListener {
 107   public:
 108     NS_DECL_ISUPPORTS
 109
 110     MouseListener(nsFileControlFrame* aFrame) :
 111       mFrame(aFrame)
 112     {}
 113
 114     void ForgetFrame() {
 115       mFrame = nsnull;
 116     }
 117
 118   protected:
 119     nsFileControlFrame* mFrame;
 120   };
 121
 122   class SyncDisabledStateEvent;
 123   friend class SyncDisabledStateEvent;
 124   class SyncDisabledStateEvent : public nsRunnable
 125   {
 126   public:
 127     SyncDisabledStateEvent(nsFileControlFrame* aFrame)
 128       : mFrame(aFrame)
 129     {}
 130
 131     NS_IMETHOD Run() {
 132       nsFileControlFrame* frame = static_cast<nsFileControlFrame*>(mFrame.GetFrame());
 133       NS_ENSURE_STATE(frame);
 134
 135       frame->SyncDisabledState();
 136       return NS_OK;
 137     }
 138
 139   private:
 140     nsWeakFrame mFrame;
 141   };
 142
 143   class CaptureMouseListener: public MouseListener {
 144   public:
 145     CaptureMouseListener(nsFileControlFrame* aFrame) : MouseListener(aFrame),
 146                                                        mMode(0) {};
 147     NS_DECL_NSIDOMEVENTLISTENER
 148     PRUint32 mMode;
 149   };
 150
 151   class BrowseMouseListener: public MouseListener {
 152   public:
 153     BrowseMouseListener(nsFileControlFrame* aFrame) : MouseListener(aFrame) {};
 154     NS_DECL_NSIDOMEVENTLISTENER
 155
 156     static bool IsValidDropData(nsIDOMDragEvent* aEvent);
 157   };
 158
 159   virtual bool IsFrameOfType(PRUint32 aFlags) const
 160   {
 161     return nsBlockFrame::IsFrameOfType(aFlags &
 162       ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
 163   }
 164
 165   virtual PRIntn GetSkipSides() const;
 166
 167   /**
 168    * The text box input.
 169    * @see nsFileControlFrame::CreateAnonymousContent
 170    */
 171   nsCOMPtr<nsIContent> mTextContent;
 172   /**
 173    * The browse button input.
 174    * @see nsFileControlFrame::CreateAnonymousContent
 175    */
 176   nsCOMPtr<nsIContent> mBrowse;
 177
 178   /**
 179    * The capture button input.
 180    * @see nsFileControlFrame::CreateAnonymousContent
 181    */
 182   nsCOMPtr<nsIContent> mCapture;
 183
 184   /**
 185    * Our mouse listener.  This makes sure we don't get used after destruction.
 186    */
 187   nsRefPtr<BrowseMouseListener> mMouseListener;
 188   nsRefPtr<CaptureMouseListener> mCaptureMouseListener;
 189
 190 protected:
 191   /**
 192    * @return the text control frame, or null if not found
 193    */
 194   nsTextControlFrame* GetTextControlFrame();
 195
 196   /**
 197    * Copy an attribute from file content to text and button content.
 198    * @param aNameSpaceID namespace of attr
 199    * @param aAttribute attribute atom
 200    * @param aWhichControls which controls to apply to (SYNC_TEXT or SYNC_FILE)
 201    */
 202   void SyncAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
 203                 PRInt32 aWhichControls);
 204
 205   /**
 206    * Sync the disabled state of the content with anonymous children.
 207    */
 208   void SyncDisabledState();
 209 };
 210
 211 #endif
 212
 213