home *** CD-ROM | disk | FTP | other *** search
- /* -*- 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.org 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 nsITextServicesDocument_h__
- #define nsITextServicesDocument_h__
-
- #include "nsISupports.h"
-
- class nsIDOMDocument;
- class nsIDOMRange;
- class nsIPresShell;
- class nsIEditor;
- class nsString;
- class nsITextServicesFilter;
-
- /*
- TextServicesDocument interface to outside world
- */
-
- #define NS_ITEXTSERVICESDOCUMENT_IID \
- { /* 019718E1-CDB5-11d2-8D3C-000000000000 */ \
- 0x019718e1, 0xcdb5, 0x11d2, \
- { 0x8d, 0x3c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }
-
-
- /**
- * The nsITextServicesDocument presents the document in as a
- * bunch of flattened text blocks. Each text block can be retrieved
- * as an nsString (array of characters).
- */
- class nsITextServicesDocument : public nsISupports{
- public:
-
- NS_DEFINE_STATIC_IID_ACCESSOR(NS_ITEXTSERVICESDOCUMENT_IID)
-
- typedef enum { eDSNormal=0, eDSUndlerline } TSDDisplayStyle;
-
- typedef enum { eBlockNotFound=0, // There is no text block (TB) in or before the selection (S).
- eBlockOutside, // No TB in S, but found one before/after S.
- eBlockInside, // S extends beyond the start and end of TB.
- eBlockContains, // TB contains entire S.
- eBlockPartial // S begins or ends in TB but extends outside of TB.
- } TSDBlockSelectionStatus;
-
- /**
- * Initializes the text services document to use a particular
- * DOM document.
- * @param aDOMDocument is the document to use. It is AddRef'd
- * by this method.
- * @param aPresShell is the presentation shell to use when
- * setting the selection. It is AddRef'd by this method.
- */
- NS_IMETHOD InitWithDocument(nsIDOMDocument *aDOMDocument, nsIPresShell *aPresShell) = 0;
-
- /**
- * Get the DOM document for the document in use.
- * @return aDocument the dom document [OUT]
- */
- NS_IMETHOD GetDocument(nsIDOMDocument **aDocument) = 0;
-
- /**
- * Initializes the text services document to use a particular
- * editor. The text services document will use the DOM document
- * and presentation shell used by the editor.
- * @param aEditor is the editor to use. The editor is AddRef'd
- * by this method.
- */
- NS_IMETHOD InitWithEditor(nsIEditor *aEditor) = 0;
-
- /**
- * Sets the range/extent over which the text services document
- * will iterate. Note that InitWithDocument() or InitWithEditor()
- * should have been called prior to calling this method. If this
- * method is never called, the text services defaults to iterating
- * over the entire document.
- *
- * @param aDOMRange is the range to use. aDOMRange must point to a
- * valid range object.
- */
- NS_IMETHOD SetExtent(nsIDOMRange* aDOMRange) = 0;
-
- /**
- * Gets the range that the text services document
- * is currently iterating over. If SetExtent() was never
- * called, this method will return a range that spans the
- * entire body of the document.
- *
- * @param aDOMRange will contain an AddRef'd pointer to the range.
- */
- NS_IMETHOD GetExtent(nsIDOMRange** aDOMRange) = 0;
-
- /**
- * Expands the end points of the range so that it spans complete words.
- * This call does not change any internal state of the text services document.
- *
- * @param aDOMRange the range to be expanded/adjusted.
- */
- NS_IMETHOD ExpandRangeToWordBoundaries(nsIDOMRange *aRange) = 0;
-
- /**
- * Sets the filter to be used while iterating over content.
- * @param aFilter filter to be used while iterating over content.
- */
- NS_IMETHOD SetFilter(nsITextServicesFilter *aFilter) = 0;
-
- /**
- * Returns true if the document can be modified with calls
- * to DeleteSelection() and InsertText().
- * @param aCanEdit is true if the document can be modified,
- * false if it can't.
- */
- NS_IMETHOD CanEdit(PRBool *aCanEdit) = 0;
-
- /**
- * Returns the text in the current text block.
- * @param aStr will contain the text.
- */
-
- NS_IMETHOD GetCurrentTextBlock(nsString *aStr) = 0;
-
- /**
- * Tells the document to point to the first text block
- * in the document. This method does not adjust the current
- * cursor position or selection.
- */
-
- NS_IMETHOD FirstBlock() = 0;
-
- /**
- * Tells the document to point to the last text block in the
- * document. This method does not adjust the current cursor
- * position or selection.
- */
-
- NS_IMETHOD LastBlock() = 0;
-
- /**
- * Tells the document to point to the first text block that
- * contains the current selection or caret.
- * @param aSelectionStatus will contain the text block selection status
- * @param aSelectionOffset will contain the offset into the
- * string returned by GetCurrentTextBlock() where the selection
- * begins.
- * @param aLength will contain the number of characters that are
- * selected in the string.
- */
-
- NS_IMETHOD FirstSelectedBlock(TSDBlockSelectionStatus *aSelectionStatus, PRInt32 *aSelectionOffset, PRInt32 *aSelectionLength) = 0;
-
- /**
- * Tells the document to point to the last text block that
- * contains the current selection or caret.
- * @param aSelectionStatus will contain the text block selection status
- * @param aSelectionOffset will contain the offset into the
- * string returned by GetCurrentTextBlock() where the selection
- * begins.
- * @param aLength will contain the number of characters that are
- * selected in the string.
- */
-
- NS_IMETHOD LastSelectedBlock(TSDBlockSelectionStatus *aSelectionStatus, PRInt32 *aSelectionOffset, PRInt32 *aSelectionLength) = 0;
-
- /**
- * Tells the document to point to the text block before
- * the current one. This method will return NS_OK, even
- * if there is no previous block. Callers should call IsDone()
- * to check if we have gone beyond the first text block in
- * the document.
- */
-
- NS_IMETHOD PrevBlock() = 0;
-
- /**
- * Tells the document to point to the text block after
- * the current one. This method will return NS_OK, even
- * if there is no next block. Callers should call IsDone()
- * to check if we have gone beyond the last text block
- * in the document.
- */
-
- NS_IMETHOD NextBlock() = 0;
-
- /**
- * IsDone() will always set aIsDone == PR_FALSE unless
- * the document contains no text, PrevBlock() was called
- * while the document was already pointing to the first
- * text block in the document, or NextBlock() was called
- * while the document was already pointing to the last
- * text block in the document.
- * @param aIsDone will contain the result.
- */
-
- NS_IMETHOD IsDone(PRBool *aIsDone) = 0;
-
- /**
- * SetSelection() allows the caller to set the selection
- * based on an offset into the string returned by
- * GetCurrentTextBlock(). A length of zero places the cursor
- * at that offset. A positive non-zero length "n" selects
- * n characters in the string.
- * @param aOffset offset into string returned by GetCurrentTextBlock().
- * @param aLength number characters selected.
- */
-
- NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength) = 0;
-
- /**
- * Scrolls the document so that the current selection is visible.
- */
-
- NS_IMETHOD ScrollSelectionIntoView() = 0;
-
- /**
- * Deletes the text selected by SetSelection(). Calling
- * DeleteSelection with nothing selected, or with a collapsed
- * selection (cursor) does nothing and returns NS_OK.
- */
-
- NS_IMETHOD DeleteSelection() = 0;
-
- /**
- * Inserts the given text at the current cursor position.
- * If there is a selection, it will be deleted before the
- * text is inserted.
- */
-
- NS_IMETHOD InsertText(const nsString *aText) = 0;
-
- /**
- * Sets the display style for the text selected by SetSelection().
- * @param aStyle is the style to apply to the selected text.
- */
-
- NS_IMETHOD SetDisplayStyle(TSDDisplayStyle aStyle) = 0;
-
- /**
- * Returns the DOM range for a given offset and length
- * @param aOffset offset into string returned by GetCurrentTextBlock().
- * @param aLength number characters selected.
- * @return aDOMRange the DOM range that represents the offset and length
- */
- NS_IMETHOD GetDOMRangeFor(PRInt32 aOffset, PRInt32 aLength, nsIDOMRange** aRange) = 0;
- };
-
- #endif // nsITextServicesDocument_h__
-
-