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- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef nsIContent_h___
- #define nsIContent_h___
-
- #include <stdio.h>
- #include "nsCOMPtr.h"
- #include "nsISupports.h"
- #include "nsEvent.h"
- #include "nsAString.h"
- #include "nsContentErrors.h"
- #include "nsPropertyTable.h"
-
- // Forward declarations
- class nsIAtom;
- class nsIDocument;
- class nsPresContext;
- class nsVoidArray;
- class nsIDOMEvent;
- class nsIContent;
- class nsISupportsArray;
- class nsIDOMRange;
- class nsINodeInfo;
- class nsIEventListenerManager;
- class nsIURI;
-
- // IID for the nsIContent interface
- #define NS_ICONTENT_IID \
- { 0x3fecc374, 0x2839, 0x4db3, \
- { 0x8d, 0xe8, 0x6b, 0x76, 0xd1, 0xd8, 0xe6, 0xf6 } }
-
- /**
- * A node of content in a document's content model. This interface
- * is supported by all content objects.
- */
- class nsIContent : public nsISupports {
- public:
- NS_DEFINE_STATIC_IID_ACCESSOR(NS_ICONTENT_IID)
-
- nsIContent()
- : mParentPtrBits(0) { }
-
- /**
- * DEPRECATED - Use GetCurrentDoc or GetOwnerDoc.
- * Get the document for this content.
- * @return the document
- */
- virtual nsIDocument* GetDocument() const = 0;
-
- /**
- * Bind this content node to a tree. If this method throws, the caller must
- * call UnbindFromTree() on the node. In the typical case of a node being
- * appended to a parent, this will be called after the node has been added to
- * the parent's child list and before nsIDocumentObserver notifications for
- * the addition are dispatched.
- * @param aDocument The new document for the content node. Must match the
- * current document of aParent, if aParent is not null.
- * May not be null if aParent is null.
- * @param aParent The new parent for the content node. May be null if the
- * node is being bound as a direct child of the document.
- * @param aBindingParent The new binding parent for the content node.
- * This is allowed to be null. In that case, the
- * binding parent of aParent, if any, will be used.
- * @param aCompileEventHandlers whether to initialize the event handlers in
- * the document (used by nsXULElement)
- * @note either aDocument or aParent must be non-null. If both are null,
- * this method _will_ crash.
- * @note This method must not be called by consumers of nsIContent on a node
- * that is already bound to a tree. Call UnbindFromTree first.
- * @note This method will handle rebinding descendants appropriately (eg
- * changing their binding parent as needed).
- * @note This method does not add the content node to aParent's child list
- * @throws NS_ERROR_OUT_OF_MEMORY if that happens
- */
- virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
- nsIContent* aBindingParent,
- PRBool aCompileEventHandlers) = 0;
-
- /**
- * Unbind this content node from a tree. This will set its current document
- * and binding parent to null. In the typical case of a node being removed
- * from a parent, this will be called after it has been removed from the
- * parent's child list and after the nsIDocumentObserver notifications for
- * the removal have been dispatched.
- * @param aDeep Whether to recursively unbind the entire subtree rooted at
- * this node. The only time PR_FALSE should be passed is when the
- * parent node of the content is being destroyed.
- * @param aNullParent Whether to null out the parent pointer as well. This
- * is usually desirable. This argument should only be false while
- * recursively calling UnbindFromTree when a subtree is detached.
- * @note This method is safe to call on nodes that are not bound to a tree.
- */
- virtual void UnbindFromTree(PRBool aDeep = PR_TRUE,
- PRBool aNullParent = PR_TRUE) = 0;
-
- /**
- * Returns true if the content has an ancestor that is a document.
- *
- * @return whether this content is in a document tree
- */
- virtual PRBool IsInDoc() const = 0;
-
- /**
- * Get the document that this content is currently in, if any. This will be
- * null if the content has no ancestor that is a document.
- *
- * @return the current document
- */
- nsIDocument *GetCurrentDoc() const
- {
- // XXX This should become:
- // return IsInDoc() ? GetOwnerDoc() : nsnull;
- return GetDocument();
- }
-
- /**
- * Get the ownerDocument for this content.
- *
- * @return the ownerDocument
- */
- virtual nsIDocument *GetOwnerDoc() const = 0;
-
- /**
- * Get the parent content for this content.
- * @return the parent, or null if no parent
- */
- nsIContent* GetParent() const
- {
- return NS_REINTERPRET_CAST(nsIContent *, mParentPtrBits & ~kParentBitMask);
- }
-
- /**
- * Get whether this content is C++-generated anonymous content
- * @see nsIAnonymousContentCreator
- * @return whether this content is anonymous
- */
- virtual PRBool IsNativeAnonymous() const = 0;
-
- /**
- * Set whether this content is anonymous
- * @see nsIAnonymousContentCreator
- * @param aAnonymous whether this content is anonymous
- */
- virtual void SetNativeAnonymous(PRBool aAnonymous) = 0;
-
- /**
- * Get the namespace that this element's tag is defined in
- * @return the namespace
- */
- virtual PRInt32 GetNameSpaceID() const = 0;
-
- /**
- * Get the tag for this element. This will always return a non-null
- * atom pointer (as implied by the naming of the method).
- */
- virtual nsIAtom *Tag() const = 0;
-
- /**
- * Get the NodeInfo for this element
- * @return the nodes node info
- */
- virtual nsINodeInfo * GetNodeInfo() const = 0;
-
- /**
- * Get the number of children
- * @return the number of children
- */
- virtual PRUint32 GetChildCount() const = 0;
-
- /**
- * Get a child by index
- * @param aIndex the index of the child to get, or null if index out
- * of bounds
- * @return the child
- */
- virtual nsIContent *GetChildAt(PRUint32 aIndex) const = 0;
-
- /**
- * Get the index of a child within this content
- * @param aPossibleChild the child to get the index
- * @return the index of the child, or -1 if not a child
- */
- virtual PRInt32 IndexOf(nsIContent* aPossibleChild) const = 0;
-
- /**
- * Insert a content node at a particular index.
- *
- * @param aKid the content to insert
- * @param aIndex the index it is being inserted at (the index it will have
- * after it is inserted)
- * @param aNotify whether to notify the document that the insert has
- * occurred
- */
- virtual nsresult InsertChildAt(nsIContent* aKid, PRUint32 aIndex,
- PRBool aNotify) = 0;
-
- /**
- * Append a content node to the end of the child list.
- *
- * @param aKid the content to append
- * @param aNotify whether to notify the document that the replace has
- * occurred
- */
- virtual nsresult AppendChildTo(nsIContent* aKid, PRBool aNotify) = 0;
-
- /**
- * Remove a child from this content node.
- *
- * @param aIndex the index of the child to remove
- * @param aNotify whether to notify the document that the replace has
- * occurred
- */
- virtual nsresult RemoveChildAt(PRUint32 aIndex, PRBool aNotify) = 0;
-
- /**
- * Returns an atom holding the name of the attribute of type ID on
- * this content node (if applicable). Returns null for non-element
- * content nodes.
- */
- virtual nsIAtom *GetIDAttributeName() const = 0;
-
- /**
- * Normalizes an attribute name and returns it as a nodeinfo if an attribute
- * with that name exists. This method is intended for character case
- * conversion if the content object is case insensitive (e.g. HTML). Returns
- * the nodeinfo of the attribute with the specified name if one exists or
- * null otherwise.
- *
- * @param aStr the unparsed attribute string
- * @return the node info. May be nsnull.
- */
- virtual already_AddRefed<nsINodeInfo> GetExistingAttrNameFromQName(const nsAString& aStr) const = 0;
-
- /**
- * Set attribute values. All attribute values are assumed to have a
- * canonical string representation that can be used for these
- * methods. The SetAttr method is assumed to perform a translation
- * of the canonical form into the underlying content specific
- * form.
- *
- * @param aNameSpaceID the namespace of the attribute
- * @param aName the name of the attribute
- * @param aValue the value to set
- * @param aNotify specifies how whether or not the document should be
- * notified of the attribute change.
- */
- nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
- const nsAString& aValue, PRBool aNotify)
- {
- return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);
- }
-
- /**
- * Set attribute values. All attribute values are assumed to have a
- * canonical String representation that can be used for these
- * methods. The SetAttr method is assumed to perform a translation
- * of the canonical form into the underlying content specific
- * form.
- *
- * @param aNameSpaceID the namespace of the attribute
- * @param aName the name of the attribute
- * @param aPrefix the prefix of the attribute
- * @param aValue the value to set
- * @param aNotify specifies how whether or not the document should be
- * notified of the attribute change.
- */
- virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
- nsIAtom* aPrefix, const nsAString& aValue,
- PRBool aNotify) = 0;
-
- /**
- * Get the current value of the attribute. This returns a form that is
- * suitable for passing back into SetAttr.
- *
- * @param aNameSpaceID the namespace of the attr
- * @param aName the name of the attr
- * @param aResult the value (may legitimately be the empty string) [OUT]
- * @throws NS_CONTENT_ATTR_NOT_THERE if the attribute is not set and has no
- * default value
- * @throws NS_CONTENT_ATTR_NO_VALUE if the attribute exists but has no value
- * @throws NS_CONTENT_ATTR_HAS_VALUE if the attribute exists and has a
- * non-empty value (==NS_OK)
- */
- virtual nsresult GetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
- nsAString& aResult) const = 0;
-
- /**
- * Determine if an attribute has been set (empty string or otherwise).
- *
- * @param aNameSpaceId the namespace id of the attribute
- * @param aAttr the attribute name
- * @return whether an attribute exists
- */
- virtual PRBool HasAttr(PRInt32 aNameSpaceID, nsIAtom* aName) const = 0;
-
- /**
- * Remove an attribute so that it is no longer explicitly specified.
- *
- * @param aNameSpaceID the namespace id of the attribute
- * @param aAttr the name of the attribute to unset
- * @param aNotify specifies whether or not the document should be
- * notified of the attribute change
- */
- virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttr,
- PRBool aNotify) = 0;
-
-
- /**
- * Get the namespace / name / prefix of a given attribute.
- *
- * @param aIndex the index of the attribute name
- * @param aNameSpace the name space ID of the attribute name [OUT]
- * @param aName the attribute name [OUT]
- * @param aPrefix the attribute prefix [OUT]
- *
- */
- virtual nsresult GetAttrNameAt(PRUint32 aIndex, PRInt32* aNameSpaceID,
- nsIAtom** aName, nsIAtom** aPrefix) const = 0;
-
- /**
- * Get the number of all specified attributes.
- *
- * @return the number of attributes
- */
- virtual PRUint32 GetAttrCount() const = 0;
-
- /**
- * Inform content of range ownership changes. This allows content
- * to do the right thing to ranges in the face of changes to the content
- * model.
- * RangeRemove -- informs content that it no longer owns a range endpoint
- * GetRangeList -- returns the list of ranges that have one or both endpoints
- * within this content item
- */
- /**
- * Inform content that it owns one or both range endpoints
- * @param aRange the range the content owns
- */
- virtual nsresult RangeAdd(nsIDOMRange* aRange) = 0;
-
- /**
- * Inform content that it no longer owns either range endpoint
- * @param aRange the range the content no longer owns
- */
- virtual void RangeRemove(nsIDOMRange* aRange) = 0;
-
- /**
- * Get the list of ranges that have either endpoint in this content
- * item.
- * @return the list of ranges owned partially by this content. The
- * nsVoidArray is owned by the content object and its lifetime is
- * controlled completely by the content object.
- */
- virtual const nsVoidArray *GetRangeList() const = 0;
-
- /**
- * Handle a DOM event for this piece of content. This method is responsible
- * for handling and controlling all three stages of events, capture, local
- * and bubble. It also does strange things to anonymous content which whiz
- * right by this author's head.
- *
- * Here are some beginning explanations:
- * - if in INIT or CAPTURE mode, it must pass the event to its parent in
- * CAPTURE mode (this happens before the event is fired, therefore the
- * firing of events will occur from the root up to the target).
- * - The event is fired to listeners.
- * - If in INIT or BUBBLE mode, it passes the event to its parent in BUBBLE
- * mode. This means that the events will be fired up the chain starting
- * from the target to the ancestor.
- *
- * NOTE: if you are extending nsGenericElement and have to do a default
- * action, call super::HandleDOMEvent() first and check for
- * aEventStatus != nsEventStatus_eIgnore and make sure you are not in CAPTURE
- * mode before proceeding.
- *
- * XXX Go comment that method, Will Robinson.
- * @param aPresContext the current presentation context
- * @param aEvent the event that is being propagated
- * @param aDOMEvent a special event that may contain a modified target. Pass
- * in null here or aDOMEvent if you are in HandleDOMEvent already;
- * don't worry your pretty little head about it.
- * @param aFlags flags that describe what mode we are in. Generally
- * NS_EVENT_FLAG_CAPTURE, NS_EVENT_FLAG_BUBBLE and NS_EVENT_FLAG_INIT
- * are the ones that matter.
- * @param aEventStatus the status returned from the function. Generally
- * nsEventStatus_eIgnore
- */
- virtual nsresult HandleDOMEvent(nsPresContext* aPresContext,
- nsEvent* aEvent, nsIDOMEvent** aDOMEvent,
- PRUint32 aFlags,
- nsEventStatus* aEventStatus) = 0;
-
- /**
- * Get a unique ID for this piece of content.
- * This ID is used as a key to store state information
- * about this content object and its associated frame object.
- * The state information is stored in a dictionary that is
- * manipulated by the frame manager (nsIFrameManager) inside layout.
- * An opaque pointer to this dictionary is passed to the session
- * history as a handle associated with the current document's state
- *
- * These methods are DEPRECATED, DON'T USE THEM!!!
- *
- */
- virtual PRUint32 ContentID() const = 0;
- /**
- * Set the unique content ID for this content.
- * @param aID the ID to set
- */
- virtual void SetContentID(PRUint32 aID)
- {
- }
-
- /**
- * Set the focus on this content. This is generally something for the event
- * state manager to do, not ordinary people. Ordinary people should do
- * something like nsGenericHTMLElement::SetElementFocus(). This method is
- * the end result, the point where the content finds out it has been focused.
- *
- * All content elements are potentially focusable.
- *
- * @param aPresContext the pres context
- * @see nsGenericHTMLElement::SetElementFocus()
- */
- virtual void SetFocus(nsPresContext* aPresContext)
- {
- }
-
- /**
- * Remove the focus on this content. This is generally something for the
- * event state manager to do, not ordinary people. Ordinary people should do
- * something like nsGenericHTMLElement::SetElementFocus(). This method is
- * the end result, the point where the content finds out it has been focused.
- *
- * All content elements are potentially focusable.
- *
- * @param aPresContext the pres context
- * @see nsGenericHTMLElement::SetElementFocus()
- */
- virtual void RemoveFocus(nsPresContext* aPresContext)
- {
- }
-
- /**
- * Check if this content is focusable and in the current tab order.
- * Note: most callers should use nsIFrame::IsFocusable() instead as it
- * checks visibility and other layout factors as well.
- * Tabbable is indicated by a nonnegative tabindex & is a subset of focusable.
- * For example, only the selected radio button in a group is in the
- * tab order, unless the radio group has no selection in which case
- * all of the visible, non-disabled radio buttons in the group are
- * in the tab order. On the other hand, all of the visible, non-disabled
- * radio buttons are always focusable via clicking or script.
- * Also, depending on either the accessibility.tabfocus pref or
- * a system setting (nowadays: Full keyboard access, mac only)
- * some widgets may be focusable but removed from the tab order.
- * @param [inout, optional] aTabIndex the computed tab index
- * In: default tabindex for element (-1 nonfocusable, == 0 focusable)
- * Out: computed tabindex
- * @param [optional] aTabIndex the computed tab index
- * < 0 if not tabbable
- * == 0 if in normal tab order
- * > 0 can be tabbed to in the order specified by this value
- * @return whether the content is focusable via mouse, kbd or script.
- */
- virtual PRBool IsFocusable(PRInt32 *aTabIndex = nsnull)
- {
- if (aTabIndex)
- *aTabIndex = -1; // Default, not tabbable
- return PR_FALSE;
- }
-
- /**
- * Gets content node with the binding responsible for our construction (and
- * existence). Used by anonymous content (XBL-generated). null for all
- * explicit content.
- *
- * @return the binding parent
- */
- virtual nsIContent *GetBindingParent() const = 0;
-
- /**
- * Bit-flags to pass (or'ed together) to IsContentOfType()
- */
- enum {
- /** text elements */
- eTEXT = 0x00000001,
- /** dom elements */
- eELEMENT = 0x00000002,
- /** html elements */
- eHTML = 0x00000004,
- /** form controls */
- eHTML_FORM_CONTROL = 0x00000008,
- /** XUL elements */
- eXUL = 0x00000010,
- /** xml processing instructions */
- ePROCESSING_INSTRUCTION = 0x00000020,
- /** svg elements */
- eSVG = 0x00000040,
- /** comment nodes */
- eCOMMENT = 0x00000080
- };
-
- /**
- * API for doing a quick check if a content object is of a given
- * type, such as HTML, XUL, Text, ... Use this when you can instead of
- * checking the tag.
- *
- * @param aFlags what types you want to test for (see above, eTEXT, eELEMENT,
- * eHTML, eHTML_FORM_CONTROL, eXUL)
- * @return whether the content matches ALL flags passed in
- */
- virtual PRBool IsContentOfType(PRUint32 aFlags) const = 0;
-
- /**
- * Get the event listener manager, the guy you talk to to register for events
- * on this element.
- * @param aResult the event listener manager [OUT]
- */
- virtual nsresult GetListenerManager(nsIEventListenerManager** aResult) = 0;
-
- /**
- * Get the base URI for any relative URIs within this piece of
- * content. Generally, this is the document's base URI, but certain
- * content carries a local base for backward compatibility, and XML
- * supports setting a per-node base URI.
- *
- * @return the base URI
- */
- virtual already_AddRefed<nsIURI> GetBaseURI() const = 0;
-
- /**
- * This method is called when the parser finishes creating the element. This
- * particularly means that it has done everything you would expect it to have
- * done after it encounters the > at the end of the tag (for HTML or XML).
- * This includes setting the attributes, setting the document / form, and
- * placing the element into the tree at its proper place.
- *
- * For container elements, this is called *before* any of the children are
- * created or added into the tree.
- *
- * NOTE: this is currently only called for input and button, in the HTML
- * content sink. If you want to call it on your element, modify the content
- * sink of your choice to do so. This is an efficiency measure.
- *
- * If you also need to determine whether the parser is the one creating your
- * element (through createElement() or cloneNode() generally) then add a
- * boolean aFromParser to the NS_NewXXX() constructor for your element and
- * have the parser pass true. See nsHTMLInputElement.cpp and
- * nsHTMLContentSink::MakeContentObject().
- *
- * DO NOT USE THIS METHOD to get around the fact that it's hard to deal with
- * attributes dynamically. If you make attributes affect your element from
- * this method, it will only happen on initialization and JavaScript will not
- * be able to create elements (which requires them to first create the
- * element and then call setAttribute() directly, at which point
- * DoneCreatingElement() has already been called and is out of the picture).
- */
- virtual void DoneCreatingElement()
- {
- }
-
- /**
- * Call to let the content node know that it may now have a frame.
- * The content node may use this to determine what MayHaveFrame
- * returns.
- */
- virtual void SetMayHaveFrame(PRBool aMayHaveFrame)
- {
- }
-
- /**
- * Returns PR_TRUE if there is a chance that the content node has a
- * frame, PR_FALSE otherwise.
- */
- virtual PRBool MayHaveFrame() const
- {
- return PR_TRUE;
- }
-
- /**
- * This method is called when the parser begins creating the element's
- * children, if any are present.
- *
- * This is only called for XTF elements currently.
- */
- virtual void BeginAddingChildren()
- {
- }
-
- /**
- * This method is called when the parser finishes creating the element's children,
- * if any are present.
- *
- * NOTE: this is currently only called for textarea, select, applet, and
- * object elements in the HTML content sink. If you want
- * to call it on your element, modify the content sink of your
- * choice to do so. This is an efficiency measure.
- *
- * If you also need to determine whether the parser is the one creating your
- * element (through createElement() or cloneNode() generally) then add a
- * boolean aFromParser to the NS_NewXXX() constructor for your element and
- * have the parser pass true. See nsHTMLInputElement.cpp and
- * nsHTMLContentSink::MakeContentObject().
- */
- virtual void DoneAddingChildren()
- {
- }
-
- /**
- * For HTML textarea, select, applet, and object elements, returns
- * PR_TRUE if all children have been added OR if the element was not
- * created by the parser. Returns PR_TRUE for all other elements.
- */
- virtual PRBool IsDoneAddingChildren()
- {
- return PR_TRUE;
- }
-
- /**
- * Method to get the _intrinsic_ content state of this content node. This is
- * the state that is independent of the node's presentation. To get the full
- * content state, use nsIEventStateManager. Also see nsIEventStateManager
- * for the possible bits that could be set here.
- */
- // XXXbz this is PRInt32 because all the ESM content state APIs use
- // PRInt32. We should really use PRUint32 instead.
- virtual PRInt32 IntrinsicState() const
- {
- return 0;
- }
-
-
- /* Methods for manipulating content node properties. For documentation on
- * properties, see nsPropertyTable.h.
- */
-
- virtual void* GetProperty(nsIAtom *aPropertyName,
- nsresult *aStatus = nsnull) const
- { if (aStatus) *aStatus = NS_ERROR_NOT_IMPLEMENTED; return nsnull; }
-
- virtual nsresult SetProperty(nsIAtom *aPropertyName,
- void *aValue,
- NSPropertyDtorFunc aDtor = nsnull)
- { return NS_ERROR_NOT_IMPLEMENTED; }
-
- virtual nsresult DeleteProperty(nsIAtom *aPropertyName)
- { return NS_ERROR_NOT_IMPLEMENTED; }
-
- virtual void* UnsetProperty(nsIAtom *aPropertyName,
- nsresult *aStatus = nsnull)
- { if (aStatus) *aStatus = NS_ERROR_NOT_IMPLEMENTED; return nsnull; }
-
-
- #ifdef DEBUG
- /**
- * List the content (and anything it contains) out to the given
- * file stream. Use aIndent as the base indent during formatting.
- * Returns NS_OK unless a file error occurs.
- */
- virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) const = 0;
-
- /**
- * Dump the content (and anything it contains) out to the given
- * file stream. Use aIndent as the base indent during formatting.
- * Returns NS_OK unless a file error occurs.
- */
- virtual void DumpContent(FILE* out = stdout, PRInt32 aIndent = 0,
- PRBool aDumpAll = PR_TRUE) const = 0;
- #endif
-
- enum ETabFocusType {
- //eTabFocus_textControlsMask = (1<<0), // unused - textboxes always tabbable
- eTabFocus_formElementsMask = (1<<1), // non-text form elements
- eTabFocus_linksMask = (1<<2), // links
- eTabFocus_any = 1 + (1<<1) + (1<<2) // everything that can be focused
- };
-
- // Tab focus model bit field:
- static PRInt32 sTabFocusModel;
-
- // accessibility.tabfocus_applies_to_xul pref - if it is set to true,
- // the tabfocus bit field applies to xul elements.
- static PRBool sTabFocusModelAppliesToXUL;
-
- protected:
- typedef PRWord PtrBits;
-
- // Subclasses may use the low two bits of mParentPtrBits to store other data
- enum { kParentBitMask = 0x3 };
-
- PtrBits mParentPtrBits;
- };
-
- #endif /* nsIContent_h___ */
-